WO2015190365A1 - Braided body and gland packing - Google Patents
Braided body and gland packing Download PDFInfo
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- WO2015190365A1 WO2015190365A1 PCT/JP2015/066027 JP2015066027W WO2015190365A1 WO 2015190365 A1 WO2015190365 A1 WO 2015190365A1 JP 2015066027 W JP2015066027 W JP 2015066027W WO 2015190365 A1 WO2015190365 A1 WO 2015190365A1
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- braided body
- braided
- base material
- resin
- body according
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/20—Packing materials therefor
- F16J15/22—Packing materials therefor shaped as strands, ropes, threads, ribbons, or the like
Definitions
- the present invention relates to a braided body and a gland packing.
- a stuffing box is provided between a sliding portion such as a shaft provided in a valve or the like and a fixed portion, and a gland packing formed from a braided body is used in the stuffing box. I came.
- the gland packing is required to have a sealing property for preventing leakage of internal fluid or the like.
- a gland packing relating to such a sealing property for example, a gland packing having a square braided body knitted from an outer peripheral reinforcing expanded graphite knitting yarn and an inner reinforcing expanded graphite knitting yarn as a constituent element is known (Patent Document 1).
- the gland packing is also required to have a small resistance with respect to a sliding portion such as a shaft.
- a gland packing relating to low resistance for example, a plurality of knitting yarns of main fibers and sub-fibers are braided, and the knitting yarn existing on the outer peripheral surface portion has a sealing property with the lubricating sub-fibers containing a lubricant.
- a braided packing characterized by being composed of abundant main fibers is known (Patent Document 2).
- the interior of the stuffing box may become hot (300 ° C or higher) due to internal fluids.
- the gland packing in the stuffing box tends to be easily fixed to the sliding portion, which is usually made of metal. In some cases, a large amount of force is required to move, or excessive leakage occurs when the shaft or the like is moved in a fixed state.
- the present invention has been made in view of such problems, and an object of the present invention is to provide a braided body that is firmly fixed to the sliding portion and is excellent in balance with low sliding resistance and sealing properties. .
- a configuration example of the present invention is as follows.
- the strong adhesion to the sliding portion is suppressed, and particularly, the strong adhesion to the sliding portion is suppressed even at a high temperature of 300 ° C. or higher, and the low sliding resistance and the sealing property are balanced over a long period of time.
- An excellent braided body can be provided.
- FIG. 1A is a partial side view of a base material used in the following examples
- FIG. 1B is an explanatory view showing a passage of a knitting yarn constituting the base material shown in FIG. It is.
- FIG. 2 is a schematic cross-sectional view showing an outline of a testing machine used in measuring the leakage amount and the initial sliding torque in the following examples.
- the braided body according to the present invention has a leakage amount measured by the following method of 30 cc / min or less and an initial sliding torque of less than 100 N ⁇ m.
- Method After winding a braided body around the shaft of a testing machine having a stuffing box and a shaft, the braided body is clamped at a surface pressure of 60 MPa, and the testing machine is heated at 300 ° C. for 1 hour and loaded with 3.8 MPa of water. Measure the amount of leakage for 5 minutes from the beginning, and then measure the initial sliding torque with a torque wrench.
- the braided body of the present invention having such characteristics is suppressed from being firmly fixed to the sliding portion, and is particularly excellent for a long time because it is suppressed from being firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher. It has a good balance between low sliding resistance and sealability. Although low sliding resistance and sealing performance are contradictory performances, according to the present invention, a braided body that is excellent in balance between these performances can be obtained.
- the leakage amount is preferably 25 cc / min or less, more preferably 20 cc / min or less, and the initial sliding torque is preferably 90 N ⁇ m or less. Preferably, it is 80 N ⁇ m or less.
- the leakage amount and the initial sliding torque are measured by the following method.
- Method After six braids were wound around the shaft of a testing machine having a stuffing box with an inner diameter of 33 mm and a depth of 90 mm and a shaft with a shaft diameter of 20 mm (dimensions of each braid after winding; inner diameter: 20 mm, outer diameter : 33 mm, height: 6.5 mm), the braided body was clamped at a surface pressure of 60 MPa, this tester was heated at 300 ° C. for 1 hour, and the amount of leakage for 5 minutes was measured after starting to load 3.8 MPa of water. Then, the initial sliding torque is measured with a torque wrench.
- the shape of the braided body of the present invention is usually a string, and the length and thickness may be appropriately selected according to the desired application, and are not particularly limited.
- the density of the braided body is preferably in the range of 1.00 to 1.35 g / cm 3 from the viewpoint of obtaining a braided body excellent in sealing performance and impermeability of internal fluid.
- the use of the braided body of the present invention is not particularly limited, but preferably includes a sealing material, particularly preferably a gland packing, and more preferably a gland used at a high temperature of about 300 ° C. to 650 ° C. Packing is mentioned.
- the braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but has excellent heat resistance, has a low coefficient of friction, and is unlikely to undergo chemical changes such as oxidation, so that it firmly adheres to the sliding portion.
- a braided body that can be firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher, has an excellent low sliding resistance over a long period of time, and that does not easily damage the sliding portion.
- a braided body containing molybdenum trioxide is preferable.
- molybdenum trioxide instead of a conventionally known lubricant, there is a tendency that a braided body having the above characteristics and further having the above effects can be obtained.
- molybdenum trioxide commercially available molybdenum trioxide can be used, and usually powdered molybdenum trioxide is used.
- the powdery molybdenum trioxide is preferably molybdenum trioxide having an average particle diameter (median diameter) in the range of 1 to 5 ⁇ m. Since the average particle diameter of molybdenum trioxide is in the above range, strong adhesion to the sliding portion is suppressed, the braided body has excellent low sliding resistance over a long period of time, and is difficult to damage the sliding portion. Can be obtained.
- the content of the molybdenum trioxide in 100% by mass of the braided body of the present invention is a braided body that is excellent in a good balance between low sliding resistance and sealability over a long period of time, with which firm fixation to the sliding portion is suppressed. From the standpoint that it can be obtained, it is preferably 1% by mass or more, more preferably 1 to 10% by mass.
- the braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but at least one selected from the group consisting of expanded graphite and carbon fiber from the viewpoint that a braided body excellent in heat resistance and chemical resistance can be obtained.
- a braided body including a base material formed by braiding a string-like body including a seed is preferable.
- the base material containing expanded graphite is excellent in heat resistance, chemical resistance, self-lubricity, impermeability of internal fluids, etc., is elastic, has little heat loss, and is chemically stable. By using the base material, it is possible to obtain a braided body having these properties and usable for a wide range of fluids.
- a base material containing carbon fiber has excellent properties such as heat resistance, chemical resistance, heat dissipation, and self-lubricating properties, the use of the base material has these properties, and further A braided body that does not easily damage the moving part can be obtained.
- the base material only has to be expanded graphite and / or carbon fiber as the main component of the braided braided body.
- the braided body includes metal wire, metal fiber, aramid fiber, and glass fiber.
- ceramic fibers and the like may be included.
- the string-like body containing the expanded graphite is not particularly limited, A string-like body made only of expanded graphite, A string-like body made of knitting yarn obtained by folding a band-shaped expanded graphite sheet, A string-like body in which the core metal wire is covered with expanded graphite powder; A plurality of strip-shaped expanded graphite sheets having a thickness of about 0.2 to 1.0 mm and a width of about 2.0 to 10.0 mm are laminated, and the surface has a fiber diameter of about 0.1 to 10 ⁇ m and a pressure of 50 MPa or more.
- a string-like body made of a fiber having strength for example, a carbon fiber, a metal fiber, an aramid fiber, a glass fiber, a ceramic fiber, etc., which is covered with a knitted or bag knitted,
- the expanded graphite used here has an expanded carbon content of 96.5 or more and a density of 0.5 g / cm 3 or more from the viewpoint of obtaining a base material having excellent sealing properties and chemical resistance. Graphite is preferred.
- the string-like body containing the carbon fiber is not particularly limited, A string-like body made of only carbon fiber, A string formed by winding the outer circumference of a carbon fiber in a spiral shape with a fiber having a fiber diameter of about 0.1 to 10 ⁇ m and a strength of 50 MPa or more, for example, a metal fiber, an aramid fiber, a glass fiber, or a ceramic fiber , A string-shaped body having a diameter of 0.1 to 0.3 mm and made of a metal wire made of stainless steel, copper alloy, aluminum alloy, monel, inconel, etc., spirally wound around a carbon fiber.
- the carbon fiber used here is preferably a carbon fiber having an average fiber diameter of about 5 to 15 ⁇ m from the viewpoint of obtaining a base material excellent in strength and the like.
- the method (knitting method) for braiding the string-like body including at least one selected from the group consisting of expanded graphite and carbon fiber is not particularly limited, and examples thereof include eight knitting and lattice knitting.
- the “braid” in the present invention includes twisting.
- the method for winding the metal wire is not particularly limited, and a single metal wire may be simply wound spirally, or a plurality of metal wires knitted like a wire mesh may be wound.
- the density of the base material is preferably in the range of 1.45 to 1.70 g / cm 3 from the viewpoint of obtaining a braided body excellent in sealing performance and impermeability of internal fluid.
- the content of the base material in 100% by mass of the braided body of the present invention is preferably 70 to 90% by mass from the viewpoint that a braided body excellent in sealing performance and impermeability of internal fluid and the like can be obtained. %.
- the braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but it is possible to obtain a braided body excellent in sealing properties, base material antioxidant properties, molybdenum trioxide retention properties, impermeability of internal fluids, and the like. From the viewpoint of being able to do so, a braided body containing a resin is preferable.
- the resin is preferably a resin that can be used as a plugging material for the base material.
- a resin that can be used as a plugging material for the base material.
- the resin is not particularly limited, but is excellent in heat resistance, and particularly firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher, and balances excellent sliding resistance and sealing properties over a long period of time.
- a heat-resistant resin is preferable from the standpoint that a braided body often obtained can be obtained.
- the heat resistant resin examples include resins having a melting point of preferably 200 to 350 ° C., more preferably 260 to 350 ° C.
- a resin having excellent heat resistance such as a fluororesin, polyphenylene sulfide, polyether ether ketone, and polyimide is preferable.
- fluororesin examples include PTFE (tetrafluoroethylene resin), PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin), FEP (tetrafluoroethylene-hexafluoropropylene copolymer resin), ETFE (four Examples thereof include fluorinated ethylene-ethylene copolymer resin), CTFE (trifluorinated ethylene chloride resin), and PVDF (vinylidene fluoride resin).
- PTFE is preferable because it is excellent in heat resistance, chemical resistance, self-lubricating property, and the like.
- PTFE as the resin, a braided body having particularly heat resistance and low sliding resistance can be obtained. .
- the content of the resin in 100% by mass of the braided body of the present invention can provide a braided body that is excellent in heat resistance, sealing properties, deterioration prevention properties such as oxidation of the base material, and impermeability of internal fluids. From the viewpoint of being able to do so, it is preferably 9 to 20% by mass.
- the braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but may contain other components in addition to the molybdenum trioxide, the base material, and the resin depending on the desired application.
- the conventionally well-known component used for gland packing etc. can be used in the range which does not impair the effect of this invention, For example, a rust preventive agent, lubricating oil, antioxidant, a coloring agent is mentioned. It is done.
- the method for producing the braided body of the present invention is not particularly limited, and the obtained string is obtained by attaching the resin and molybdenum trioxide to a string-like body containing at least one selected from the group consisting of expanded graphite and carbon fiber.
- the method may be a method of braiding the shaped body, but includes the step 1 of attaching the resin and molybdenum trioxide to the base material from the standpoint that a braided body that exhibits the above effects can be obtained.
- the method is preferable, and it is preferable to use each component in such an amount that the contents of the base material, the resin, and molybdenum trioxide in the obtained braided body are within the above-mentioned preferable ranges.
- the resin and molybdenum trioxide are present inside and on the surface of the base material.
- the resin and molybdenum trioxide are present on the surface of the base material.
- the strong fixation to the sliding part is suppressed, particularly the strong fixing to the sliding part is suppressed even at a high temperature of 300 ° C. or higher, and it has a low sliding resistance (low friction resistance).
- a braided body that can suppress deterioration such as oxidation of the base material can be obtained.
- a braided body having the above characteristics low leakage amount, low initial sliding torque
- the method for adhering the resin and molybdenum trioxide is not particularly limited.
- molybdenum trioxide is added to a dispersion in which resin particles are dispersed and stirred, and the string-like body and mother material are added to the obtained liquid.
- a method of immersing and drying a material, a method of applying and drying the obtained liquid to the string-like body and a base material, a method of creating a resin sheet containing molybdenum trioxide and winding the resin sheet around the base material It is done.
- when manufacturing the braided body containing the said other component what is necessary is just to use this other component at the time of preparation of the said liquid or the preparation of a resin sheet.
- the gland packing of the present invention is not particularly limited as long as it is formed from the braided body of the present invention (including the braided body obtained by the method for manufacturing a braided body of the present invention).
- Such a gland packing suppresses strong sticking to the sliding part, and particularly suppresses strong sticking to the sliding part even at a high temperature of 300 ° C. or higher, and has low sliding resistance and sealability over a long period of time. Excellent balance.
- the gland packing can be formed by cutting the braided body into a predetermined length and press-molding it into a ring shape, and cutting the braided body into a predetermined length for use. It can also be formed by winding it around a sliding part such as a shaft and then tightening it with a packing presser.
- the material of the sliding portion in which the gland packing is used is not particularly limited, but from the viewpoint that the effect of the gland packing is more exhibited.
- the material of the sliding part is preferably stainless steel (SUS304).
- Examples 1-4 and Comparative Examples 1-2 As the base material, a base material shown in FIG. 1 in which a reinforced expanded graphite knitting yarn obtained by reinforcing string-like expanded graphite with a metal wire is braided into a square braid by lattice knitting was used.
- Formulation shown in Table 1 below is an aqueous dispersion of PTFE fine particles ("Polyflon D-1" manufactured by Daikin Industries, Ltd.) and molybdenum trioxide and a rust inhibitor ("Non-last CL-2" manufactured by Cosmo Oil Co., Ltd.).
- a mixed liquid was obtained by adding and mixing at a ratio, and the base material was immersed in the obtained mixed liquid, followed by heat treatment at 100 ° C. for 3 hours to obtain a braided body.
- Table 3 shows the component composition of the obtained braided body.
- the amount of leakage from the stuffing box (the amount of leakage from between the shaft 22 and the packing retainer 23) in the 5 minutes after starting to flow water was measured with a graduated cylinder (in the case of measuring the amount of leakage, The shaft was not slid). Thereafter, the initial sliding torque was measured using a torque wrench. The results are shown in Table 3. The case where the leakage amount was 30 cc / min or less and the initial sliding torque was less than 100 N ⁇ m was evaluated as “ ⁇ ”, and the other cases were evaluated as “X”.
- the initial sliding torque means the sliding torque when the shaft is moved for the first time after starting to flow water.
Abstract
With regards to this braided body and gland packing, the braided body has an amount of leakage as measured by the belowmentioned method of no greater than 30 cc/min, and an initial sliding torque of less than 100 N·m. In the method, after winding the braided body to the shaft of a test mechanism having a shaft and a stuffing box, the braided body is tightened to a contact pressure of 60 MPa, the test mechanism is heated for one hour to 300°C, the amount of leakage is measured for five minutes after starting to load with 3.8 MPa water, and then the initial sliding torque is measured using a torque wrench.
Description
本発明は、編組体およびグランドパッキンに関する。
The present invention relates to a braided body and a gland packing.
従来より、バルブ等に設けられる軸などの摺動部と固定部との間には、スタフィングボックスが設けられ、該スタフィングボックス内には、編組体から形成されたグランドパッキンなどが用いられてきた。
Conventionally, a stuffing box is provided between a sliding portion such as a shaft provided in a valve or the like and a fixed portion, and a gland packing formed from a braided body is used in the stuffing box. I came.
前記グランドパッキンには、内部流体等の漏洩を防止するためのシール性が求められている。
このようなシール性に関するグランドパッキンとして、例えば、外周補強膨張黒鉛編糸および内部補強膨張黒鉛編糸から編組された角形編組体を構成要素とするグランドパッキンが知られている（特許文献１）。 The gland packing is required to have a sealing property for preventing leakage of internal fluid or the like.
As a gland packing relating to such a sealing property, for example, a gland packing having a square braided body knitted from an outer peripheral reinforcing expanded graphite knitting yarn and an inner reinforcing expanded graphite knitting yarn as a constituent element is known (Patent Document 1).
このようなシール性に関するグランドパッキンとして、例えば、外周補強膨張黒鉛編糸および内部補強膨張黒鉛編糸から編組された角形編組体を構成要素とするグランドパッキンが知られている（特許文献１）。 The gland packing is required to have a sealing property for preventing leakage of internal fluid or the like.
As a gland packing relating to such a sealing property, for example, a gland packing having a square braided body knitted from an outer peripheral reinforcing expanded graphite knitting yarn and an inner reinforcing expanded graphite knitting yarn as a constituent element is known (Patent Document 1).
また、前記グランドパッキンには、軸等の摺動部との抵抗が小さいことも求められている。
このような低抵抗に関するグランドパッキンとして、例えば、主繊維と副繊維の編み糸を複数本編組して形成され、外周表面部に存在する編み糸が潤滑剤を含む潤滑性副繊維とシール性に富んだ主繊維から成ることを特徴とする編組パッキンが知られている（特許文献２）。 Further, the gland packing is also required to have a small resistance with respect to a sliding portion such as a shaft.
As such a gland packing relating to low resistance, for example, a plurality of knitting yarns of main fibers and sub-fibers are braided, and the knitting yarn existing on the outer peripheral surface portion has a sealing property with the lubricating sub-fibers containing a lubricant. A braided packing characterized by being composed of abundant main fibers is known (Patent Document 2).
このような低抵抗に関するグランドパッキンとして、例えば、主繊維と副繊維の編み糸を複数本編組して形成され、外周表面部に存在する編み糸が潤滑剤を含む潤滑性副繊維とシール性に富んだ主繊維から成ることを特徴とする編組パッキンが知られている（特許文献２）。 Further, the gland packing is also required to have a small resistance with respect to a sliding portion such as a shaft.
As such a gland packing relating to low resistance, for example, a plurality of knitting yarns of main fibers and sub-fibers are braided, and the knitting yarn existing on the outer peripheral surface portion has a sealing property with the lubricating sub-fibers containing a lubricant. A braided packing characterized by being composed of abundant main fibers is known (Patent Document 2).
前記スタフィングボックス内は、内部流体等により高温（３００℃以上）になる場合がある。このような高温下において、前記従来のグランドパッキンを用いる場合には、スタフィングボックス内のグランドパッキンが、通常金属製である前記摺動部と固着しやすい傾向にあり、この固着により軸等を動かすために多大な力を要したり、固着した状態で軸等を動かすことで、過度の漏洩が生じたりすることがあった。
The interior of the stuffing box may become hot (300 ° C or higher) due to internal fluids. When the conventional gland packing is used at such a high temperature, the gland packing in the stuffing box tends to be easily fixed to the sliding portion, which is usually made of metal. In some cases, a large amount of force is required to move, or excessive leakage occurs when the shaft or the like is moved in a fixed state.
本発明は、このような問題に鑑みてなされたものであり、摺動部への強固な固着が抑制され、低い摺動抵抗およびシール性にバランスよく優れる編組体を提供することを目的とする。
The present invention has been made in view of such problems, and an object of the present invention is to provide a braided body that is firmly fixed to the sliding portion and is excellent in balance with low sliding resistance and sealing properties. .
このような状況のもと、本発明者らは、前記課題を解決すべく鋭意検討した結果、特定の漏洩量と初期摺動トルクとを有する編組体によれば、前記目的を達成できることを見出し、本発明を完成するに至った。
本発明の構成例は以下の通りである。 Under such circumstances, as a result of intensive studies to solve the above problems, the present inventors have found that the above object can be achieved by a braided body having a specific leakage amount and an initial sliding torque. The present invention has been completed.
A configuration example of the present invention is as follows.
本発明の構成例は以下の通りである。 Under such circumstances, as a result of intensive studies to solve the above problems, the present inventors have found that the above object can be achieved by a braided body having a specific leakage amount and an initial sliding torque. The present invention has been completed.
A configuration example of the present invention is as follows.
［１］ 下記方法で測定される漏洩量が３０ｃｃ／ｍｉｎ以下であり、初期摺動トルクが１００Ｎ・ｍ未満である、編組体。
方法：スタフィングボックスおよび軸を有する試験機の軸に編組体を巻き付けた後、該編組体を面圧６０ＭＰａで締め付け、この試験機を３００℃で１時間加熱し、３．８ＭＰａの水を負荷し始めてから５分間の漏洩量を測定し、その後、初期摺動トルクをトルクレンチで測定する。 [1] A braided body having a leakage amount measured by the following method of 30 cc / min or less and an initial sliding torque of less than 100 N · m.
Method: After winding a braided body around the shaft of a testing machine having a stuffing box and a shaft, the braided body is clamped at a surface pressure of 60 MPa, and the testing machine is heated at 300 ° C. for 1 hour and loaded with 3.8 MPa of water. Measure the amount of leakage for 5 minutes from the beginning, and then measure the initial sliding torque with a torque wrench.
方法：スタフィングボックスおよび軸を有する試験機の軸に編組体を巻き付けた後、該編組体を面圧６０ＭＰａで締め付け、この試験機を３００℃で１時間加熱し、３．８ＭＰａの水を負荷し始めてから５分間の漏洩量を測定し、その後、初期摺動トルクをトルクレンチで測定する。 [1] A braided body having a leakage amount measured by the following method of 30 cc / min or less and an initial sliding torque of less than 100 N · m.
Method: After winding a braided body around the shaft of a testing machine having a stuffing box and a shaft, the braided body is clamped at a surface pressure of 60 MPa, and the testing machine is heated at 300 ° C. for 1 hour and loaded with 3.8 MPa of water. Measure the amount of leakage for 5 minutes from the beginning, and then measure the initial sliding torque with a torque wrench.
［２］ 三酸化モリブデンを含む、［１］に記載の編組体。
［３］ 前記三酸化モリブデンの含有量が１質量％以上である、［２］に記載の編組体。 [2] The braided body according to [1], including molybdenum trioxide.
[3] The braided body according to [2], wherein the content of molybdenum trioxide is 1% by mass or more.
［３］ 前記三酸化モリブデンの含有量が１質量％以上である、［２］に記載の編組体。 [2] The braided body according to [1], including molybdenum trioxide.
[3] The braided body according to [2], wherein the content of molybdenum trioxide is 1% by mass or more.
［４］ 膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体を編組してなる母材を含む、［１］～［３］のいずれかに記載の編組体。
［５］ 前記母材の含有量が７０～９０質量％である、［４］に記載の編組体。 [4] The braided body according to any one of [1] to [3], including a base material formed by braiding a string-like body including at least one selected from the group consisting of expanded graphite and carbon fiber.
[5] The braided body according to [4], wherein the content of the base material is 70 to 90% by mass.
［５］ 前記母材の含有量が７０～９０質量％である、［４］に記載の編組体。 [4] The braided body according to any one of [1] to [3], including a base material formed by braiding a string-like body including at least one selected from the group consisting of expanded graphite and carbon fiber.
[5] The braided body according to [4], wherein the content of the base material is 70 to 90% by mass.
［６］ 樹脂を含む、［１］～［５］のいずれかに記載の編組体。
［７］ 前記樹脂の含有量が９～２０質量％である、［６］に記載の編組体。 [6] The braided body according to any one of [1] to [5], including a resin.
[7] The braided body according to [6], wherein the content of the resin is 9 to 20% by mass.
［７］ 前記樹脂の含有量が９～２０質量％である、［６］に記載の編組体。 [6] The braided body according to any one of [1] to [5], including a resin.
[7] The braided body according to [6], wherein the content of the resin is 9 to 20% by mass.
［８］ ［１］～［７］のいずれかに記載の編組体から形成されたグランドパッキン。
[8] A gland packing formed from the braided body according to any one of [1] to [7].
本発明によれば、摺動部への強固な固着が抑制され、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、長期に渡り低い摺動抵抗およびシール性にバランスよく優れる編組体を提供することができる。
According to the present invention, the strong adhesion to the sliding portion is suppressed, and particularly, the strong adhesion to the sliding portion is suppressed even at a high temperature of 300 ° C. or higher, and the low sliding resistance and the sealing property are balanced over a long period of time. An excellent braided body can be provided.
≪編組体≫
本発明に係る編組体は、下記方法で測定される漏洩量が３０ｃｃ／ｍｉｎ以下であり、初期摺動トルクが１００Ｎ・ｍ未満である。
方法：スタフィングボックスおよび軸を有する試験機の軸に編組体を巻き付けた後、該編組体を面圧６０ＭＰａで締め付け、この試験機を３００℃で１時間加熱し、３．８ＭＰａの水を負荷し始めてから５分間の漏洩量を測定し、その後、初期摺動トルクをトルクレンチで測定する。 ≪Braided body≫
The braided body according to the present invention has a leakage amount measured by the following method of 30 cc / min or less and an initial sliding torque of less than 100 N · m.
Method: After winding a braided body around the shaft of a testing machine having a stuffing box and a shaft, the braided body is clamped at a surface pressure of 60 MPa, and the testing machine is heated at 300 ° C. for 1 hour and loaded with 3.8 MPa of water. Measure the amount of leakage for 5 minutes from the beginning, and then measure the initial sliding torque with a torque wrench.
本発明に係る編組体は、下記方法で測定される漏洩量が３０ｃｃ／ｍｉｎ以下であり、初期摺動トルクが１００Ｎ・ｍ未満である。
方法：スタフィングボックスおよび軸を有する試験機の軸に編組体を巻き付けた後、該編組体を面圧６０ＭＰａで締め付け、この試験機を３００℃で１時間加熱し、３．８ＭＰａの水を負荷し始めてから５分間の漏洩量を測定し、その後、初期摺動トルクをトルクレンチで測定する。 ≪Braided body≫
The braided body according to the present invention has a leakage amount measured by the following method of 30 cc / min or less and an initial sliding torque of less than 100 N · m.
Method: After winding a braided body around the shaft of a testing machine having a stuffing box and a shaft, the braided body is clamped at a surface pressure of 60 MPa, and the testing machine is heated at 300 ° C. for 1 hour and loaded with 3.8 MPa of water. Measure the amount of leakage for 5 minutes from the beginning, and then measure the initial sliding torque with a torque wrench.
このような特性を有する本発明の編組体は、摺動部への強固な固着が抑制され、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、長期に渡り優れた低い摺動抵抗とシール性とをバランスよく有する。
低い摺動抵抗とシール性とは相反する性能であるが、本発明によれば、これらの性能にバランス良く優れる編組体を得ることができる。 The braided body of the present invention having such characteristics is suppressed from being firmly fixed to the sliding portion, and is particularly excellent for a long time because it is suppressed from being firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher. It has a good balance between low sliding resistance and sealability.
Although low sliding resistance and sealing performance are contradictory performances, according to the present invention, a braided body that is excellent in balance between these performances can be obtained.
低い摺動抵抗とシール性とは相反する性能であるが、本発明によれば、これらの性能にバランス良く優れる編組体を得ることができる。 The braided body of the present invention having such characteristics is suppressed from being firmly fixed to the sliding portion, and is particularly excellent for a long time because it is suppressed from being firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher. It has a good balance between low sliding resistance and sealability.
Although low sliding resistance and sealing performance are contradictory performances, according to the present invention, a braided body that is excellent in balance between these performances can be obtained.
これらの効果がより発揮される等の点から、前記漏洩量は、好ましくは２５ｃｃ／ｍｉｎ以下、より好ましくは２０ｃｃ／ｍｉｎ以下であり、前記初期摺動トルクは、好ましくは９０Ｎ・ｍ以下、より好ましくは８０Ｎ・ｍ以下である。
In view of these effects, the leakage amount is preferably 25 cc / min or less, more preferably 20 cc / min or less, and the initial sliding torque is preferably 90 N · m or less. Preferably, it is 80 N · m or less.
前記漏洩量と初期摺動トルクの測定は、より具体的には、下記方法で行われる。
方法：内径３３ｍｍ、深さ９０ｍｍのスタフィングボックスおよび軸径２０ｍｍの軸を有する試験機の軸に６個の編組体を巻き付けた後（巻き付け後の各編組体の寸法；内径：２０ｍｍ、外径：３３ｍｍ、高さ：６．５ｍｍ）、該編組体を面圧６０ＭＰａで締め付け、この試験機を３００℃で１時間加熱し、３．８ＭＰａの水を負荷し始めてから５分間の漏洩量を測定し、その後、初期摺動トルクをトルクレンチで測定する。 More specifically, the leakage amount and the initial sliding torque are measured by the following method.
Method: After six braids were wound around the shaft of a testing machine having a stuffing box with an inner diameter of 33 mm and a depth of 90 mm and a shaft with a shaft diameter of 20 mm (dimensions of each braid after winding; inner diameter: 20 mm, outer diameter : 33 mm, height: 6.5 mm), the braided body was clamped at a surface pressure of 60 MPa, this tester was heated at 300 ° C. for 1 hour, and the amount of leakage for 5 minutes was measured after starting to load 3.8 MPa of water. Then, the initial sliding torque is measured with a torque wrench.
方法：内径３３ｍｍ、深さ９０ｍｍのスタフィングボックスおよび軸径２０ｍｍの軸を有する試験機の軸に６個の編組体を巻き付けた後（巻き付け後の各編組体の寸法；内径：２０ｍｍ、外径：３３ｍｍ、高さ：６．５ｍｍ）、該編組体を面圧６０ＭＰａで締め付け、この試験機を３００℃で１時間加熱し、３．８ＭＰａの水を負荷し始めてから５分間の漏洩量を測定し、その後、初期摺動トルクをトルクレンチで測定する。 More specifically, the leakage amount and the initial sliding torque are measured by the following method.
Method: After six braids were wound around the shaft of a testing machine having a stuffing box with an inner diameter of 33 mm and a depth of 90 mm and a shaft with a shaft diameter of 20 mm (dimensions of each braid after winding; inner diameter: 20 mm, outer diameter : 33 mm, height: 6.5 mm), the braided body was clamped at a surface pressure of 60 MPa, this tester was heated at 300 ° C. for 1 hour, and the amount of leakage for 5 minutes was measured after starting to load 3.8 MPa of water. Then, the initial sliding torque is measured with a torque wrench.
本発明の編組体の形状は、通常、紐状であり、長さや太さは所望の用途に応じて適宜選択すればよく、特に制限されない。
The shape of the braided body of the present invention is usually a string, and the length and thickness may be appropriately selected according to the desired application, and are not particularly limited.
前記編組体の密度は、シール性および内部流体等の不浸透性などに優れる編組体を得ることができる等の点から、１．００～１．３５ｇ／ｃｍ3の範囲にあることが好ましい。
The density of the braided body is preferably in the range of 1.00 to 1.35 g / cm 3 from the viewpoint of obtaining a braided body excellent in sealing performance and impermeability of internal fluid.
本発明の編組体の用途としては、特に制限されないが、好ましくはシール材が挙げられ、特に好ましくはグランドパッキンが挙げられ、更に好ましくは、３００℃～６５０℃程度の高温下で使用されるグランドパッキンが挙げられる。
The use of the braided body of the present invention is not particularly limited, but preferably includes a sealing material, particularly preferably a gland packing, and more preferably a gland used at a high temperature of about 300 ° C. to 650 ° C. Packing is mentioned.
＜三酸化モリブデン＞
本発明の編組体は、前記特性を満たせば特に制限されないが、耐熱性に優れ、低い摩擦係数を有しており、酸化などの化学変化が起こりにくいため、摺動部への強固な固着が抑制され、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、長期に渡り優れた低い摺動抵抗を有し、さらに、摺動部を傷つけにくい編組体を得ることができる等の点から、三酸化モリブデンを含む編組体であることが好ましい。
本発明では、従来公知の潤滑剤ではなく、三酸化モリブデンを用いることで、前記特性を有し、更に前記効果を有する編組体を得ることができる傾向にある。 <Molybdenum trioxide>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but has excellent heat resistance, has a low coefficient of friction, and is unlikely to undergo chemical changes such as oxidation, so that it firmly adheres to the sliding portion. In particular, it is possible to obtain a braided body that can be firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher, has an excellent low sliding resistance over a long period of time, and that does not easily damage the sliding portion. From the viewpoint of being able to do so, a braided body containing molybdenum trioxide is preferable.
In the present invention, by using molybdenum trioxide instead of a conventionally known lubricant, there is a tendency that a braided body having the above characteristics and further having the above effects can be obtained.
本発明の編組体は、前記特性を満たせば特に制限されないが、耐熱性に優れ、低い摩擦係数を有しており、酸化などの化学変化が起こりにくいため、摺動部への強固な固着が抑制され、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、長期に渡り優れた低い摺動抵抗を有し、さらに、摺動部を傷つけにくい編組体を得ることができる等の点から、三酸化モリブデンを含む編組体であることが好ましい。
本発明では、従来公知の潤滑剤ではなく、三酸化モリブデンを用いることで、前記特性を有し、更に前記効果を有する編組体を得ることができる傾向にある。 <Molybdenum trioxide>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but has excellent heat resistance, has a low coefficient of friction, and is unlikely to undergo chemical changes such as oxidation, so that it firmly adheres to the sliding portion. In particular, it is possible to obtain a braided body that can be firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher, has an excellent low sliding resistance over a long period of time, and that does not easily damage the sliding portion. From the viewpoint of being able to do so, a braided body containing molybdenum trioxide is preferable.
In the present invention, by using molybdenum trioxide instead of a conventionally known lubricant, there is a tendency that a braided body having the above characteristics and further having the above effects can be obtained.
前記三酸化モリブデンとしては、市販の三酸化モリブデンを用いることができ、通常、粉末状の三酸化モリブデンが用いられる。該粉末状の三酸化モリブデンとしては、平均粒子径（メジアン径）が、１～５μｍの範囲にある三酸化モリブデンであることが好ましい。
三酸化モリブデンの平均粒子径が前記範囲にあることで、摺動部への強固な固着が抑制され、長期に渡り優れた低い摺動抵抗を有し、さらに、摺動部を傷つけにくい編組体を得ることができる。 As the molybdenum trioxide, commercially available molybdenum trioxide can be used, and usually powdered molybdenum trioxide is used. The powdery molybdenum trioxide is preferably molybdenum trioxide having an average particle diameter (median diameter) in the range of 1 to 5 μm.
Since the average particle diameter of molybdenum trioxide is in the above range, strong adhesion to the sliding portion is suppressed, the braided body has excellent low sliding resistance over a long period of time, and is difficult to damage the sliding portion. Can be obtained.
三酸化モリブデンの平均粒子径が前記範囲にあることで、摺動部への強固な固着が抑制され、長期に渡り優れた低い摺動抵抗を有し、さらに、摺動部を傷つけにくい編組体を得ることができる。 As the molybdenum trioxide, commercially available molybdenum trioxide can be used, and usually powdered molybdenum trioxide is used. The powdery molybdenum trioxide is preferably molybdenum trioxide having an average particle diameter (median diameter) in the range of 1 to 5 μm.
Since the average particle diameter of molybdenum trioxide is in the above range, strong adhesion to the sliding portion is suppressed, the braided body has excellent low sliding resistance over a long period of time, and is difficult to damage the sliding portion. Can be obtained.
本発明の編組体１００質量％中の、前記三酸化モリブデンの含有量は、摺動部への強固な固着が抑制され、長期に渡り低い摺動抵抗とシール性とにバランスよく優れる編組体を得ることができる等の点から、好ましくは１質量％以上であり、より好ましくは１～１０質量％である。
The content of the molybdenum trioxide in 100% by mass of the braided body of the present invention is a braided body that is excellent in a good balance between low sliding resistance and sealability over a long period of time, with which firm fixation to the sliding portion is suppressed. From the standpoint that it can be obtained, it is preferably 1% by mass or more, more preferably 1 to 10% by mass.
＜母材＞
本発明の編組体は、前記特性を満たせば特に制限されないが、耐熱性および耐薬品性に優れる編組体を得ることができる等の点から、膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体を編組してなる母材を含む編組体であることが好ましい。
膨張黒鉛を含む母材は、耐熱性、耐化学薬品性、自己潤滑性、内部流体等の不浸透性等に優れ、弾性に富み、熱減量が少なく、化学的に安定しているため、該母材を用いることで、これらの性質を有し、広範囲の流体に使用できる編組体を得ることができる。
また、炭素繊維を含む母材は、耐熱性、耐薬品性、放熱性、自己潤滑性等の優れた性質を有するため、該母材を用いることで、これらの性質を有し、さらに、摺動部を傷つけにくい編組体を得ることができる。 <Base material>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but at least one selected from the group consisting of expanded graphite and carbon fiber from the viewpoint that a braided body excellent in heat resistance and chemical resistance can be obtained. A braided body including a base material formed by braiding a string-like body including a seed is preferable.
The base material containing expanded graphite is excellent in heat resistance, chemical resistance, self-lubricity, impermeability of internal fluids, etc., is elastic, has little heat loss, and is chemically stable. By using the base material, it is possible to obtain a braided body having these properties and usable for a wide range of fluids.
In addition, since a base material containing carbon fiber has excellent properties such as heat resistance, chemical resistance, heat dissipation, and self-lubricating properties, the use of the base material has these properties, and further A braided body that does not easily damage the moving part can be obtained.
本発明の編組体は、前記特性を満たせば特に制限されないが、耐熱性および耐薬品性に優れる編組体を得ることができる等の点から、膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体を編組してなる母材を含む編組体であることが好ましい。
膨張黒鉛を含む母材は、耐熱性、耐化学薬品性、自己潤滑性、内部流体等の不浸透性等に優れ、弾性に富み、熱減量が少なく、化学的に安定しているため、該母材を用いることで、これらの性質を有し、広範囲の流体に使用できる編組体を得ることができる。
また、炭素繊維を含む母材は、耐熱性、耐薬品性、放熱性、自己潤滑性等の優れた性質を有するため、該母材を用いることで、これらの性質を有し、さらに、摺動部を傷つけにくい編組体を得ることができる。 <Base material>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but at least one selected from the group consisting of expanded graphite and carbon fiber from the viewpoint that a braided body excellent in heat resistance and chemical resistance can be obtained. A braided body including a base material formed by braiding a string-like body including a seed is preferable.
The base material containing expanded graphite is excellent in heat resistance, chemical resistance, self-lubricity, impermeability of internal fluids, etc., is elastic, has little heat loss, and is chemically stable. By using the base material, it is possible to obtain a braided body having these properties and usable for a wide range of fluids.
In addition, since a base material containing carbon fiber has excellent properties such as heat resistance, chemical resistance, heat dissipation, and self-lubricating properties, the use of the base material has these properties, and further A braided body that does not easily damage the moving part can be obtained.
前記母材は、編組される紐状体の主成分が膨脹黒鉛および／または炭素繊維であればよく、該紐状体には、これらの他に、金属線、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などが含まれていてもよい。
The base material only has to be expanded graphite and / or carbon fiber as the main component of the braided braided body. In addition to these, the braided body includes metal wire, metal fiber, aramid fiber, and glass fiber. In addition, ceramic fibers and the like may be included.
前記膨張黒鉛を含む紐状体としては、特に制限されず、
膨張黒鉛のみからなる紐状体、
帯状の膨張黒鉛シートを折りたたんだ編糸からなる紐状体、
中芯となる金属線を膨張黒鉛粉末で被覆した紐状体、
厚さ０.２～１.０ｍｍ、幅２.０～１０.０ｍｍ程度の帯状の膨張黒鉛シートを複数枚積層し、その表面を、繊維径が０.１～１０μｍ程度であり、５０ＭＰａ以上の強度を有する繊維、例えば、炭素繊維、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などでニット編もしくは袋編して被覆したものからなる紐状体、
直径が０.１～０.３ｍｍであり、ステンレス、銅合金、アルミ合金、モネル、インコネルなどからなる金属線などで膨張黒鉛の外周を螺旋状に巻回したものからなる紐状体、
厚さ０．００５～０．２ｍｍ程度の金属箔などに帯状の膨張黒鉛シートを積層被覆してなる編糸からなる紐状体、
太さ０．１～０．３ｍｍ程度の金属線、炭素繊維、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などに、帯状の膨張黒鉛を螺旋状に巻きつけたものからなる紐状体、
太さ０．１～０．３ｍｍ程度の金属線、炭素繊維、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などと、帯状の膨張黒鉛とを撚った編糸からなる紐状体、
などが挙げられる。
なお、ここで用いられる膨張黒鉛としては、シール性や耐薬品性などに優れる母材が得られる等の点から、炭素含有率が９６.５以上、密度が０.５ｇ／ｃｍ3以上の膨張黒鉛が好ましい。 The string-like body containing the expanded graphite is not particularly limited,
A string-like body made only of expanded graphite,
A string-like body made of knitting yarn obtained by folding a band-shaped expanded graphite sheet,
A string-like body in which the core metal wire is covered with expanded graphite powder;
A plurality of strip-shaped expanded graphite sheets having a thickness of about 0.2 to 1.0 mm and a width of about 2.0 to 10.0 mm are laminated, and the surface has a fiber diameter of about 0.1 to 10 μm and a pressure of 50 MPa or more. A string-like body made of a fiber having strength, for example, a carbon fiber, a metal fiber, an aramid fiber, a glass fiber, a ceramic fiber, etc., which is covered with a knitted or bag knitted,
A string-shaped body having a diameter of 0.1 to 0.3 mm and formed by spirally winding the outer periphery of expanded graphite with a metal wire made of stainless steel, copper alloy, aluminum alloy, monel, inconel, etc.
A string-like body made of knitting yarn formed by laminating and covering a strip-like expanded graphite sheet on a metal foil having a thickness of about 0.005 to 0.2 mm
A string-like body made of a metal wire having a thickness of about 0.1 to 0.3 mm, carbon fiber, metal fiber, aramid fiber, glass fiber, ceramic fiber, and the like, in which a band-shaped expanded graphite is spirally wound,
A string-like body made of a knitting yarn obtained by twisting a metal wire, carbon fiber, metal fiber, aramid fiber, glass fiber, ceramic fiber, etc. with a thickness of about 0.1 to 0.3 mm and a strip-like expanded graphite;
Etc.
The expanded graphite used here has an expanded carbon content of 96.5 or more and a density of 0.5 g / cm 3 or more from the viewpoint of obtaining a base material having excellent sealing properties and chemical resistance. Graphite is preferred.
膨張黒鉛のみからなる紐状体、
帯状の膨張黒鉛シートを折りたたんだ編糸からなる紐状体、
中芯となる金属線を膨張黒鉛粉末で被覆した紐状体、
厚さ０.２～１.０ｍｍ、幅２.０～１０.０ｍｍ程度の帯状の膨張黒鉛シートを複数枚積層し、その表面を、繊維径が０.１～１０μｍ程度であり、５０ＭＰａ以上の強度を有する繊維、例えば、炭素繊維、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などでニット編もしくは袋編して被覆したものからなる紐状体、
直径が０.１～０.３ｍｍであり、ステンレス、銅合金、アルミ合金、モネル、インコネルなどからなる金属線などで膨張黒鉛の外周を螺旋状に巻回したものからなる紐状体、
厚さ０．００５～０．２ｍｍ程度の金属箔などに帯状の膨張黒鉛シートを積層被覆してなる編糸からなる紐状体、
太さ０．１～０．３ｍｍ程度の金属線、炭素繊維、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などに、帯状の膨張黒鉛を螺旋状に巻きつけたものからなる紐状体、
太さ０．１～０．３ｍｍ程度の金属線、炭素繊維、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などと、帯状の膨張黒鉛とを撚った編糸からなる紐状体、
などが挙げられる。
なお、ここで用いられる膨張黒鉛としては、シール性や耐薬品性などに優れる母材が得られる等の点から、炭素含有率が９６.５以上、密度が０.５ｇ／ｃｍ3以上の膨張黒鉛が好ましい。 The string-like body containing the expanded graphite is not particularly limited,
A string-like body made only of expanded graphite,
A string-like body made of knitting yarn obtained by folding a band-shaped expanded graphite sheet,
A string-like body in which the core metal wire is covered with expanded graphite powder;
A plurality of strip-shaped expanded graphite sheets having a thickness of about 0.2 to 1.0 mm and a width of about 2.0 to 10.0 mm are laminated, and the surface has a fiber diameter of about 0.1 to 10 μm and a pressure of 50 MPa or more. A string-like body made of a fiber having strength, for example, a carbon fiber, a metal fiber, an aramid fiber, a glass fiber, a ceramic fiber, etc., which is covered with a knitted or bag knitted,
A string-shaped body having a diameter of 0.1 to 0.3 mm and formed by spirally winding the outer periphery of expanded graphite with a metal wire made of stainless steel, copper alloy, aluminum alloy, monel, inconel, etc.
A string-like body made of knitting yarn formed by laminating and covering a strip-like expanded graphite sheet on a metal foil having a thickness of about 0.005 to 0.2 mm
A string-like body made of a metal wire having a thickness of about 0.1 to 0.3 mm, carbon fiber, metal fiber, aramid fiber, glass fiber, ceramic fiber, and the like, in which a band-shaped expanded graphite is spirally wound,
A string-like body made of a knitting yarn obtained by twisting a metal wire, carbon fiber, metal fiber, aramid fiber, glass fiber, ceramic fiber, etc. with a thickness of about 0.1 to 0.3 mm and a strip-like expanded graphite;
Etc.
The expanded graphite used here has an expanded carbon content of 96.5 or more and a density of 0.5 g / cm 3 or more from the viewpoint of obtaining a base material having excellent sealing properties and chemical resistance. Graphite is preferred.
前記炭素繊維を含む紐状体としては、特に制限されず、
炭素繊維のみからなる紐状体、
炭素繊維の外周を、繊維径が０.１～１０μｍ程度であり、５０ＭＰａ以上の強度を有する繊維、例えば、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維で螺旋状に巻回したものからなる紐状体、
直径が０.１～０.３ｍｍであり、ステンレス、銅合金、アルミ合金、モネル、インコネルなどからなる金属線などで炭素繊維の外周を螺旋状に巻回したものからなる紐状体
太さ０．１～０．３ｍｍ程度の金属線、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などに、炭素繊維を螺旋状に巻きつけたものからなる紐状体、
太さ０．１～０．３ｍｍ程度の金属線、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などと、炭素繊維とを撚った編糸からなる紐状体、
などが挙げられる。
なお、ここで用いられる炭素繊維としては、強度などに優れる母材が得られる等の点から、平均繊維径が５～１５μｍ程度である炭素繊維が好ましい。 The string-like body containing the carbon fiber is not particularly limited,
A string-like body made of only carbon fiber,
A string formed by winding the outer circumference of a carbon fiber in a spiral shape with a fiber having a fiber diameter of about 0.1 to 10 μm and a strength of 50 MPa or more, for example, a metal fiber, an aramid fiber, a glass fiber, or a ceramic fiber ,
A string-shaped body having a diameter of 0.1 to 0.3 mm and made of a metal wire made of stainless steel, copper alloy, aluminum alloy, monel, inconel, etc., spirally wound around a carbon fiber. A string-like body made of a metal wire of about 1 to 0.3 mm, a metal fiber, an aramid fiber, a glass fiber, a ceramic fiber, etc., in which a carbon fiber is spirally wound,
A string-like body made of knitting yarn obtained by twisting a metal wire, metal fiber, aramid fiber, glass fiber, ceramic fiber, etc. with a thickness of about 0.1 to 0.3 mm and carbon fiber,
Etc.
The carbon fiber used here is preferably a carbon fiber having an average fiber diameter of about 5 to 15 μm from the viewpoint of obtaining a base material excellent in strength and the like.
炭素繊維のみからなる紐状体、
炭素繊維の外周を、繊維径が０.１～１０μｍ程度であり、５０ＭＰａ以上の強度を有する繊維、例えば、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維で螺旋状に巻回したものからなる紐状体、
直径が０.１～０.３ｍｍであり、ステンレス、銅合金、アルミ合金、モネル、インコネルなどからなる金属線などで炭素繊維の外周を螺旋状に巻回したものからなる紐状体
太さ０．１～０．３ｍｍ程度の金属線、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などに、炭素繊維を螺旋状に巻きつけたものからなる紐状体、
太さ０．１～０．３ｍｍ程度の金属線、金属繊維、アラミド繊維、ガラス繊維、セラミック繊維などと、炭素繊維とを撚った編糸からなる紐状体、
などが挙げられる。
なお、ここで用いられる炭素繊維としては、強度などに優れる母材が得られる等の点から、平均繊維径が５～１５μｍ程度である炭素繊維が好ましい。 The string-like body containing the carbon fiber is not particularly limited,
A string-like body made of only carbon fiber,
A string formed by winding the outer circumference of a carbon fiber in a spiral shape with a fiber having a fiber diameter of about 0.1 to 10 μm and a strength of 50 MPa or more, for example, a metal fiber, an aramid fiber, a glass fiber, or a ceramic fiber ,
A string-shaped body having a diameter of 0.1 to 0.3 mm and made of a metal wire made of stainless steel, copper alloy, aluminum alloy, monel, inconel, etc., spirally wound around a carbon fiber. A string-like body made of a metal wire of about 1 to 0.3 mm, a metal fiber, an aramid fiber, a glass fiber, a ceramic fiber, etc., in which a carbon fiber is spirally wound,
A string-like body made of knitting yarn obtained by twisting a metal wire, metal fiber, aramid fiber, glass fiber, ceramic fiber, etc. with a thickness of about 0.1 to 0.3 mm and carbon fiber,
Etc.
The carbon fiber used here is preferably a carbon fiber having an average fiber diameter of about 5 to 15 μm from the viewpoint of obtaining a base material excellent in strength and the like.
膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体を編組する方法（編み方）としては、特に制限されず、例えば、八つ編、格子編が挙げられる。
なお、本発明における「編組」には、撚り合わせることも含まれる。 The method (knitting method) for braiding the string-like body including at least one selected from the group consisting of expanded graphite and carbon fiber is not particularly limited, and examples thereof include eight knitting and lattice knitting.
The “braid” in the present invention includes twisting.
なお、本発明における「編組」には、撚り合わせることも含まれる。 The method (knitting method) for braiding the string-like body including at least one selected from the group consisting of expanded graphite and carbon fiber is not particularly limited, and examples thereof include eight knitting and lattice knitting.
The “braid” in the present invention includes twisting.
また、前記母材としては、膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体を編組したものに、さらに補強材として金属線を巻きつけた母材が、耐久性等に優れる編組体が得られる等の点から好ましい。
金属線を巻きつける方法としては特に制限されず、単純に１本の金属線を螺旋状に巻きつけてもよいし、金網のように編んだ複数本の金属線を巻きつけもよい。 In addition, as the base material, a base material in which a metal wire is wound as a reinforcing material on a braided string containing at least one selected from the group consisting of expanded graphite and carbon fiber, durability, etc. It is preferable from the standpoint of obtaining a braided body excellent in.
The method for winding the metal wire is not particularly limited, and a single metal wire may be simply wound spirally, or a plurality of metal wires knitted like a wire mesh may be wound.
金属線を巻きつける方法としては特に制限されず、単純に１本の金属線を螺旋状に巻きつけてもよいし、金網のように編んだ複数本の金属線を巻きつけもよい。 In addition, as the base material, a base material in which a metal wire is wound as a reinforcing material on a braided string containing at least one selected from the group consisting of expanded graphite and carbon fiber, durability, etc. It is preferable from the standpoint of obtaining a braided body excellent in.
The method for winding the metal wire is not particularly limited, and a single metal wire may be simply wound spirally, or a plurality of metal wires knitted like a wire mesh may be wound.
前記母材の密度は、シール性および内部流体等の不浸透性などに優れる編組体を得ることができる等の点から、１．４５～１．７０ｇ／ｃｍ3の範囲にあることが好ましい。
The density of the base material is preferably in the range of 1.45 to 1.70 g / cm 3 from the viewpoint of obtaining a braided body excellent in sealing performance and impermeability of internal fluid.
本発明の編組体１００質量％中の、前記母材の含有量は、シール性および内部流体等の不浸透性などに優れる編組体を得ることができる等の点から、好ましくは７０～９０質量％である。
The content of the base material in 100% by mass of the braided body of the present invention is preferably 70 to 90% by mass from the viewpoint that a braided body excellent in sealing performance and impermeability of internal fluid and the like can be obtained. %.
＜樹脂＞
本発明の編組体は、前記特性を満たせば特に制限されないが、シール性、母材の酸化防止性、三酸化モリブデンの保持性、内部流体等の不浸透性などに優れる編組体を得ることができる等の点から、樹脂を含む編組体であることが好ましい。 <Resin>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but it is possible to obtain a braided body excellent in sealing properties, base material antioxidant properties, molybdenum trioxide retention properties, impermeability of internal fluids, and the like. From the viewpoint of being able to do so, a braided body containing a resin is preferable.
本発明の編組体は、前記特性を満たせば特に制限されないが、シール性、母材の酸化防止性、三酸化モリブデンの保持性、内部流体等の不浸透性などに優れる編組体を得ることができる等の点から、樹脂を含む編組体であることが好ましい。 <Resin>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but it is possible to obtain a braided body excellent in sealing properties, base material antioxidant properties, molybdenum trioxide retention properties, impermeability of internal fluids, and the like. From the viewpoint of being able to do so, a braided body containing a resin is preferable.
前記樹脂としては、前記母材の目詰め材となるような樹脂であることが好ましい。このような樹脂を用いることよって、流体が編組体内部を浸透して漏洩したり、編組体と軸等の摺動部との間または編組体とスタフィングボックスとの間から漏洩するのを抑制でき、シール性に優れる編組体を得ることができる。
The resin is preferably a resin that can be used as a plugging material for the base material. By using such a resin, it is possible to prevent fluid from penetrating inside the braided body and leaking, or from leaking between the braided body and the sliding part such as the shaft or between the braided body and the stuffing box. And a braided body excellent in sealing performance can be obtained.
前記樹脂としては、特に制限されないが、耐熱性に優れ、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、長期に渡り優れた低い摺動抵抗とシール性とをバランスよく有する編組体を得ることができる等の点から、耐熱性樹脂が好ましい。
The resin is not particularly limited, but is excellent in heat resistance, and particularly firmly fixed to the sliding portion even at a high temperature of 300 ° C. or higher, and balances excellent sliding resistance and sealing properties over a long period of time. A heat-resistant resin is preferable from the standpoint that a braided body often obtained can be obtained.
前記耐熱性樹脂としては、融点が、好ましくは２００～３５０℃の範囲にある樹脂、より好ましくは２６０～３５０℃の範囲にある樹脂が挙げられる。
このような耐熱性樹脂としては、フッ素樹脂、ポリフェニレンサルファイド、ポリエーテルエーテルケトン、ポリイミド等の耐熱性に優れた樹脂が好ましい。 Examples of the heat resistant resin include resins having a melting point of preferably 200 to 350 ° C., more preferably 260 to 350 ° C.
As such a heat-resistant resin, a resin having excellent heat resistance such as a fluororesin, polyphenylene sulfide, polyether ether ketone, and polyimide is preferable.
このような耐熱性樹脂としては、フッ素樹脂、ポリフェニレンサルファイド、ポリエーテルエーテルケトン、ポリイミド等の耐熱性に優れた樹脂が好ましい。 Examples of the heat resistant resin include resins having a melting point of preferably 200 to 350 ° C., more preferably 260 to 350 ° C.
As such a heat-resistant resin, a resin having excellent heat resistance such as a fluororesin, polyphenylene sulfide, polyether ether ketone, and polyimide is preferable.
前記フッ素樹脂としては、ＰＴＦＥ（四フッ化エチレン樹脂）、ＰＦＡ（四フッ化エチレン－パーフルオロアルキルビニルエーテル共重合樹脂）、ＦＥＰ（四フッ化エチレン－六フッ化プロピレン共重合樹脂）、ＥＴＦＥ（四フッ化エチレン－エチレン共重合樹脂）、ＣＴＦＥ（三フッ化塩化エチレン樹脂）、ＰＶＤＦ（フッ化ビニリデン樹脂）が挙げられる。これらのうち、耐熱性、耐薬品性、自己潤滑性等に優れるため、ＰＴＦＥが好ましく、前記樹脂としてＰＴＦＥを用いることで、特に耐熱性と低い摺動抵抗とを有する編組体を得ることができる。
Examples of the fluororesin include PTFE (tetrafluoroethylene resin), PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin), FEP (tetrafluoroethylene-hexafluoropropylene copolymer resin), ETFE (four Examples thereof include fluorinated ethylene-ethylene copolymer resin), CTFE (trifluorinated ethylene chloride resin), and PVDF (vinylidene fluoride resin). Among these, PTFE is preferable because it is excellent in heat resistance, chemical resistance, self-lubricating property, and the like. By using PTFE as the resin, a braided body having particularly heat resistance and low sliding resistance can be obtained. .
本発明の編組体１００質量％中の、前記樹脂の含有量は、耐熱性、シール性、母材の酸化等の劣化防止性、内部流体等の不浸透性などに優れる編組体を得ることができる等の点から、好ましくは９～２０質量％である。
The content of the resin in 100% by mass of the braided body of the present invention can provide a braided body that is excellent in heat resistance, sealing properties, deterioration prevention properties such as oxidation of the base material, and impermeability of internal fluids. From the viewpoint of being able to do so, it is preferably 9 to 20% by mass.
＜その他の成分＞
本発明の編組体は、前記特性を満たせば特に制限されないが、所望の用途に応じて、前記三酸化モリブデン、母材および樹脂のほかに、その他の成分を含んでいてもよい。
前記その他の成分としては、本発明の効果を損なわない範囲で、グランドパッキン等に用いられる従来公知の成分を用いることができ、例えば、防錆剤、潤滑油、酸化防止剤、着色剤が挙げられる。 <Other ingredients>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but may contain other components in addition to the molybdenum trioxide, the base material, and the resin depending on the desired application.
As said other component, the conventionally well-known component used for gland packing etc. can be used in the range which does not impair the effect of this invention, For example, a rust preventive agent, lubricating oil, antioxidant, a coloring agent is mentioned. It is done.
本発明の編組体は、前記特性を満たせば特に制限されないが、所望の用途に応じて、前記三酸化モリブデン、母材および樹脂のほかに、その他の成分を含んでいてもよい。
前記その他の成分としては、本発明の効果を損なわない範囲で、グランドパッキン等に用いられる従来公知の成分を用いることができ、例えば、防錆剤、潤滑油、酸化防止剤、着色剤が挙げられる。 <Other ingredients>
The braided body of the present invention is not particularly limited as long as it satisfies the above characteristics, but may contain other components in addition to the molybdenum trioxide, the base material, and the resin depending on the desired application.
As said other component, the conventionally well-known component used for gland packing etc. can be used in the range which does not impair the effect of this invention, For example, a rust preventive agent, lubricating oil, antioxidant, a coloring agent is mentioned. It is done.
＜編組体の製造方法＞
本発明の編組体の製造方法としては、特に制限されず、膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体に前記樹脂および三酸化モリブデンを付着させ、得られた紐状体を編組する方法であってもよいが、前記効果がより発揮される編組体を得ることができる等の点から、前記母材に、前記樹脂および三酸化モリブデンを付着させる工程１を含む方法が好ましく、さらに、得られる編組体中の母材、樹脂および三酸化モリブデンの含有量が前記好ましい範囲となるような量で各成分を用いることが好ましい。 <Method for producing braided body>
The method for producing the braided body of the present invention is not particularly limited, and the obtained string is obtained by attaching the resin and molybdenum trioxide to a string-like body containing at least one selected from the group consisting of expanded graphite and carbon fiber. The method may be a method of braiding the shaped body, but includes the step 1 of attaching the resin and molybdenum trioxide to the base material from the standpoint that a braided body that exhibits the above effects can be obtained. The method is preferable, and it is preferable to use each component in such an amount that the contents of the base material, the resin, and molybdenum trioxide in the obtained braided body are within the above-mentioned preferable ranges.
本発明の編組体の製造方法としては、特に制限されず、膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体に前記樹脂および三酸化モリブデンを付着させ、得られた紐状体を編組する方法であってもよいが、前記効果がより発揮される編組体を得ることができる等の点から、前記母材に、前記樹脂および三酸化モリブデンを付着させる工程１を含む方法が好ましく、さらに、得られる編組体中の母材、樹脂および三酸化モリブデンの含有量が前記好ましい範囲となるような量で各成分を用いることが好ましい。 <Method for producing braided body>
The method for producing the braided body of the present invention is not particularly limited, and the obtained string is obtained by attaching the resin and molybdenum trioxide to a string-like body containing at least one selected from the group consisting of expanded graphite and carbon fiber. The method may be a method of braiding the shaped body, but includes the step 1 of attaching the resin and molybdenum trioxide to the base material from the standpoint that a braided body that exhibits the above effects can be obtained. The method is preferable, and it is preferable to use each component in such an amount that the contents of the base material, the resin, and molybdenum trioxide in the obtained braided body are within the above-mentioned preferable ranges.
前記工程１を含む方法で得られる編組体は、母材の内部および表面に前記樹脂および三酸化モリブデンが存在することになるが、特に、母材の表面に前記樹脂および三酸化モリブデンが存在することで、摺動部への強固な固着が抑制され、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、低い摺動抵抗（低摩擦抵抗）を有し、さらに、母材の酸化等の劣化を抑制できる編組体を得ることができる。
また、前記工程１を含む方法によれば、前記特性（低漏洩量、低初期摺動トルク）を有する編組体を容易に得ることができる。 In the braided body obtained by the method including the step 1, the resin and molybdenum trioxide are present inside and on the surface of the base material. In particular, the resin and molybdenum trioxide are present on the surface of the base material. In this way, the strong fixation to the sliding part is suppressed, particularly the strong fixing to the sliding part is suppressed even at a high temperature of 300 ° C. or higher, and it has a low sliding resistance (low friction resistance). A braided body that can suppress deterioration such as oxidation of the base material can be obtained.
Further, according to the method including the step 1, a braided body having the above characteristics (low leakage amount, low initial sliding torque) can be easily obtained.
また、前記工程１を含む方法によれば、前記特性（低漏洩量、低初期摺動トルク）を有する編組体を容易に得ることができる。 In the braided body obtained by the method including the step 1, the resin and molybdenum trioxide are present inside and on the surface of the base material. In particular, the resin and molybdenum trioxide are present on the surface of the base material. In this way, the strong fixation to the sliding part is suppressed, particularly the strong fixing to the sliding part is suppressed even at a high temperature of 300 ° C. or higher, and it has a low sliding resistance (low friction resistance). A braided body that can suppress deterioration such as oxidation of the base material can be obtained.
Further, according to the method including the step 1, a braided body having the above characteristics (low leakage amount, low initial sliding torque) can be easily obtained.
前記樹脂および三酸化モリブデンを付着させる方法としては、特に制限されないが、例えば、樹脂粒子が分散したディスパージョンに三酸化モリブデンを添加して撹拌し、得られた液体中に前記紐状体や母材を浸漬し乾燥させる方法、得られた液体を前記紐状体や母材に塗布し乾燥させる方法、三酸化モリブデンを含む樹脂シートを作成し、該樹脂シートを前記母材に巻き付ける方法が挙げられる。
なお、前記その他の成分を含む編組体を製造する際には、前記液体の作成時や樹脂シートの作成時に該その他の成分を用いればよい。 The method for adhering the resin and molybdenum trioxide is not particularly limited. For example, molybdenum trioxide is added to a dispersion in which resin particles are dispersed and stirred, and the string-like body and mother material are added to the obtained liquid. A method of immersing and drying a material, a method of applying and drying the obtained liquid to the string-like body and a base material, a method of creating a resin sheet containing molybdenum trioxide and winding the resin sheet around the base material It is done.
In addition, when manufacturing the braided body containing the said other component, what is necessary is just to use this other component at the time of preparation of the said liquid or the preparation of a resin sheet.
なお、前記その他の成分を含む編組体を製造する際には、前記液体の作成時や樹脂シートの作成時に該その他の成分を用いればよい。 The method for adhering the resin and molybdenum trioxide is not particularly limited. For example, molybdenum trioxide is added to a dispersion in which resin particles are dispersed and stirred, and the string-like body and mother material are added to the obtained liquid. A method of immersing and drying a material, a method of applying and drying the obtained liquid to the string-like body and a base material, a method of creating a resin sheet containing molybdenum trioxide and winding the resin sheet around the base material It is done.
In addition, when manufacturing the braided body containing the said other component, what is necessary is just to use this other component at the time of preparation of the said liquid or the preparation of a resin sheet.
＜グランドパッキン＞
本発明のグランドパッキンとしては、前記本発明の編組体（前記本発明の編組体の製造方法で得られる編組体を含む）から形成されれば特に制限されない。
このようなグランドパッキンは、摺動部への強固な固着が抑制され、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、長期に渡り低い摺動抵抗およびシール性にバランスよく優れる。 <Gland packing>
The gland packing of the present invention is not particularly limited as long as it is formed from the braided body of the present invention (including the braided body obtained by the method for manufacturing a braided body of the present invention).
Such a gland packing suppresses strong sticking to the sliding part, and particularly suppresses strong sticking to the sliding part even at a high temperature of 300 ° C. or higher, and has low sliding resistance and sealability over a long period of time. Excellent balance.
本発明のグランドパッキンとしては、前記本発明の編組体（前記本発明の編組体の製造方法で得られる編組体を含む）から形成されれば特に制限されない。
このようなグランドパッキンは、摺動部への強固な固着が抑制され、特に３００℃以上の高温下でも摺動部への強固な固着が抑制され、長期に渡り低い摺動抵抗およびシール性にバランスよく優れる。 <Gland packing>
The gland packing of the present invention is not particularly limited as long as it is formed from the braided body of the present invention (including the braided body obtained by the method for manufacturing a braided body of the present invention).
Such a gland packing suppresses strong sticking to the sliding part, and particularly suppresses strong sticking to the sliding part even at a high temperature of 300 ° C. or higher, and has low sliding resistance and sealability over a long period of time. Excellent balance.
前記グランドパッキンは、具体的には、前記編組体を所定長さに切断してリング状にプレス成形することで形成することができ、また、前記編組体を所定長さに切断して、使用される場所、例えば、軸等の摺動部に巻き付けたのち、パッキン押さえなどで締め付けることで形成することもできる。
Specifically, the gland packing can be formed by cutting the braided body into a predetermined length and press-molding it into a ring shape, and cutting the braided body into a predetermined length for use. It can also be formed by winding it around a sliding part such as a shaft and then tightening it with a packing presser.
前記グランドパッキンは、低い摺動抵抗（低摩擦抵抗）を有するため、該グランドパッキンが用いられる摺動部の材質等は特に制限されないが、前記グランドパッキンの効果がより発揮される等の点から、前記摺動部の材質は、ステンレス鋼（ＳＵＳ３０４）であることが好ましい。
Since the gland packing has a low sliding resistance (low frictional resistance), the material of the sliding portion in which the gland packing is used is not particularly limited, but from the viewpoint that the effect of the gland packing is more exhibited. The material of the sliding part is preferably stainless steel (SUS304).
以下、本発明を実施例によりさらに詳細に説明するが、本発明はこれらの実施例により何ら限定されるものではない。
Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
［実施例１～４および比較例１～２］
母材として、図１に示す、紐状の膨張黒鉛を金属線で補強した補強膨張黒鉛編糸を格子編により角形編組体に編組みした母材を用いた。
ＰＴＦＥ微粒子の水性ディスパージョン（ダイキン工業（株）製「ポリフロンＤ－１」）に三酸化モリブデンおよび防錆剤（コスモ石油（株）製「ノンラストＣＬ－２」）を、下記表１に示す配合割合で添加し十分混合することで混合液体を得、得られた混合液体中に前記母材を浸漬させた後、１００℃で３時間加熱処理することで編組体を得た。
得られた編組体の成分組成を表３に示す。 [Examples 1-4 and Comparative Examples 1-2]
As the base material, a base material shown in FIG. 1 in which a reinforced expanded graphite knitting yarn obtained by reinforcing string-like expanded graphite with a metal wire is braided into a square braid by lattice knitting was used.
Formulation shown in Table 1 below is an aqueous dispersion of PTFE fine particles ("Polyflon D-1" manufactured by Daikin Industries, Ltd.) and molybdenum trioxide and a rust inhibitor ("Non-last CL-2" manufactured by Cosmo Oil Co., Ltd.). A mixed liquid was obtained by adding and mixing at a ratio, and the base material was immersed in the obtained mixed liquid, followed by heat treatment at 100 ° C. for 3 hours to obtain a braided body.
Table 3 shows the component composition of the obtained braided body.
母材として、図１に示す、紐状の膨張黒鉛を金属線で補強した補強膨張黒鉛編糸を格子編により角形編組体に編組みした母材を用いた。
ＰＴＦＥ微粒子の水性ディスパージョン（ダイキン工業（株）製「ポリフロンＤ－１」）に三酸化モリブデンおよび防錆剤（コスモ石油（株）製「ノンラストＣＬ－２」）を、下記表１に示す配合割合で添加し十分混合することで混合液体を得、得られた混合液体中に前記母材を浸漬させた後、１００℃で３時間加熱処理することで編組体を得た。
得られた編組体の成分組成を表３に示す。 [Examples 1-4 and Comparative Examples 1-2]
As the base material, a base material shown in FIG. 1 in which a reinforced expanded graphite knitting yarn obtained by reinforcing string-like expanded graphite with a metal wire is braided into a square braid by lattice knitting was used.
Formulation shown in Table 1 below is an aqueous dispersion of PTFE fine particles ("Polyflon D-1" manufactured by Daikin Industries, Ltd.) and molybdenum trioxide and a rust inhibitor ("Non-last CL-2" manufactured by Cosmo Oil Co., Ltd.). A mixed liquid was obtained by adding and mixing at a ratio, and the base material was immersed in the obtained mixed liquid, followed by heat treatment at 100 ° C. for 3 hours to obtain a braided body.
Table 3 shows the component composition of the obtained braided body.
［比較例３］
ＰＴＦＥ微粒子の水性ディスパージョン（ダイキン工業（株）製「ポリフロンＤ－１」）に二硫化モリブデンおよび防錆剤（コスモ石油（株）製「ノンラストＣＬ-２」）を、下記表１に示す配合割合で添加し十分混合することで混合液体を得、得られた混合液体中に実施例１と同様の母材を浸漬させた後、１００℃で３時間加熱処理することで編組体を得た。
得られた編組体の成分組成を表３に示す。 [Comparative Example 3]
Formulation shown in Table 1 below is an aqueous dispersion of PTFE fine particles ("Polyflon D-1" manufactured by Daikin Industries, Ltd.) and molybdenum disulfide and an antirust agent ("Non-last CL-2" manufactured by Cosmo Oil Co., Ltd.). A mixed liquid was obtained by adding and mixing at a ratio, and after immersing a base material similar to that in Example 1 in the obtained mixed liquid, a braided body was obtained by heat treatment at 100 ° C. for 3 hours. .
Table 3 shows the component composition of the obtained braided body.
ＰＴＦＥ微粒子の水性ディスパージョン（ダイキン工業（株）製「ポリフロンＤ－１」）に二硫化モリブデンおよび防錆剤（コスモ石油（株）製「ノンラストＣＬ-２」）を、下記表１に示す配合割合で添加し十分混合することで混合液体を得、得られた混合液体中に実施例１と同様の母材を浸漬させた後、１００℃で３時間加熱処理することで編組体を得た。
得られた編組体の成分組成を表３に示す。 [Comparative Example 3]
Formulation shown in Table 1 below is an aqueous dispersion of PTFE fine particles ("Polyflon D-1" manufactured by Daikin Industries, Ltd.) and molybdenum disulfide and an antirust agent ("Non-last CL-2" manufactured by Cosmo Oil Co., Ltd.). A mixed liquid was obtained by adding and mixing at a ratio, and after immersing a base material similar to that in Example 1 in the obtained mixed liquid, a braided body was obtained by heat treatment at 100 ° C. for 3 hours. .
Table 3 shows the component composition of the obtained braided body.
(試験方法)
前記実施例および比較例で得られた編組体それぞれを６個用い、略図２に示すような試験機（軸径２０ｍｍ、スタフィングボックス内径３３ｍｍ、スタフィングボックス深さ９０ｍｍ）における軸２２に巻き付けた後（この時の各編組体の寸法（パッキン寸法）は、内径が２０ｍｍであり、外径が３３ｍｍであり、高さ（厚み）が６．５ｍｍである。）、パッキン押え２３により面圧６０ＭＰａで締め付けた。この試験機を３００℃または３５０℃で１時間加熱し、３．８ＭＰａの水（内部流体４０）を流した（負荷した）。水を流し始めてから５分間におけるスタフィングボックスからの漏洩量（軸２２とパッキン押え２３との間から漏れ出た量）をメスシリンダーで測定した（なお、この漏洩量の測定の際には、軸を摺動させなかった）。その後、トルクレンチを用いて初期摺動トルクを測定した。結果を表３に示す。漏洩量が３０ｃｃ／ｍｉｎ以下であり、かつ、初期摺動トルクが１００Ｎ・ｍ未満である場合を「○」と評価し、それ以外の場合を「×」と評価した。
なお、初期摺動トルクとは、水を流し始めてから最初に軸を動かした時の摺動トルクのことをいう。 (Test method)
Each of the six braided bodies obtained in the examples and comparative examples was used and wound around theshaft 22 in a testing machine (shaft diameter 20 mm, stuffing box inner diameter 33 mm, stuffing box depth 90 mm) as shown in FIG. After (the dimensions (packing dimensions) of each braided body at this time are an inner diameter of 20 mm, an outer diameter of 33 mm, and a height (thickness) of 6.5 mm). Tightened with. This tester was heated at 300 ° C. or 350 ° C. for 1 hour, and 3.8 MPa of water (internal fluid 40) was flowed (loaded). The amount of leakage from the stuffing box (the amount of leakage from between the shaft 22 and the packing retainer 23) in the 5 minutes after starting to flow water was measured with a graduated cylinder (in the case of measuring the amount of leakage, The shaft was not slid). Thereafter, the initial sliding torque was measured using a torque wrench. The results are shown in Table 3. The case where the leakage amount was 30 cc / min or less and the initial sliding torque was less than 100 N · m was evaluated as “◯”, and the other cases were evaluated as “X”.
The initial sliding torque means the sliding torque when the shaft is moved for the first time after starting to flow water.
前記実施例および比較例で得られた編組体それぞれを６個用い、略図２に示すような試験機（軸径２０ｍｍ、スタフィングボックス内径３３ｍｍ、スタフィングボックス深さ９０ｍｍ）における軸２２に巻き付けた後（この時の各編組体の寸法（パッキン寸法）は、内径が２０ｍｍであり、外径が３３ｍｍであり、高さ（厚み）が６．５ｍｍである。）、パッキン押え２３により面圧６０ＭＰａで締め付けた。この試験機を３００℃または３５０℃で１時間加熱し、３．８ＭＰａの水（内部流体４０）を流した（負荷した）。水を流し始めてから５分間におけるスタフィングボックスからの漏洩量（軸２２とパッキン押え２３との間から漏れ出た量）をメスシリンダーで測定した（なお、この漏洩量の測定の際には、軸を摺動させなかった）。その後、トルクレンチを用いて初期摺動トルクを測定した。結果を表３に示す。漏洩量が３０ｃｃ／ｍｉｎ以下であり、かつ、初期摺動トルクが１００Ｎ・ｍ未満である場合を「○」と評価し、それ以外の場合を「×」と評価した。
なお、初期摺動トルクとは、水を流し始めてから最初に軸を動かした時の摺動トルクのことをいう。 (Test method)
Each of the six braided bodies obtained in the examples and comparative examples was used and wound around the
The initial sliding torque means the sliding torque when the shaft is moved for the first time after starting to flow water.
３１・・・金属線
３２・・・膨張黒鉛
２１・・・スタフィングボックス
２２・・・軸（ステム）
２３・・・パッキン押え
３０・・・編組体（グランドパッキン）
４０・・・水（内部流体） 31 ...metal wire 32 ... expanded graphite 21 ... stuffing box 22 ... axis (stem)
23 ...Packing presser 30 ... Braided body (gland packing)
40 ... Water (internal fluid)
３２・・・膨張黒鉛
２１・・・スタフィングボックス
２２・・・軸（ステム）
２３・・・パッキン押え
３０・・・編組体（グランドパッキン）
４０・・・水（内部流体） 31 ...
23 ...
40 ... Water (internal fluid)
Claims (8)
- 下記方法で測定される漏洩量が３０ｃｃ／ｍｉｎ以下であり、初期摺動トルクが１００Ｎ・ｍ未満である、編組体。
方法：スタフィングボックスおよび軸を有する試験機の軸に編組体を巻き付けた後、該編組体を面圧６０ＭＰａで締め付け、この試験機を３００℃で１時間加熱し、３．８ＭＰａの水を負荷し始めてから５分間の漏洩量を測定し、その後、初期摺動トルクをトルクレンチで測定する。 A braided body having a leakage amount measured by the following method of 30 cc / min or less and an initial sliding torque of less than 100 N · m.
Method: After winding a braided body around the shaft of a testing machine having a stuffing box and a shaft, the braided body is clamped at a surface pressure of 60 MPa, and the testing machine is heated at 300 ° C. for 1 hour and loaded with 3.8 MPa of water. Measure the amount of leakage for 5 minutes from the beginning, and then measure the initial sliding torque with a torque wrench. - 三酸化モリブデンを含む、請求項１に記載の編組体。 The braided body according to claim 1, comprising molybdenum trioxide.
- 前記三酸化モリブデンの含有量が１質量％以上である、請求項２に記載の編組体。 The braided body according to claim 2, wherein the content of molybdenum trioxide is 1% by mass or more.
- 膨張黒鉛および炭素繊維からなる群より選ばれる少なくとも１種を含む紐状体を編組してなる母材を含む、請求項１～３のいずれか１項に記載の編組体。 The braided body according to any one of claims 1 to 3, comprising a base material formed by braiding a string-like body containing at least one selected from the group consisting of expanded graphite and carbon fiber.
- 前記母材の含有量が７０～９０質量％である、請求項４に記載の編組体。 The braided body according to claim 4, wherein the content of the base material is 70 to 90% by mass.
- 樹脂を含む、請求項１～５のいずれか１項に記載の編組体。 The braided body according to any one of claims 1 to 5, comprising a resin.
- 前記樹脂の含有量が９～２０質量％である、請求項６に記載の編組体。 The braided body according to claim 6, wherein the content of the resin is 9 to 20% by mass.
- 請求項１～７のいずれか１項に記載の編組体から形成されたグランドパッキン。 A gland packing formed from the braided body according to any one of claims 1 to 7.
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| JP2016527763A JPWO2015190365A1 (en) | 2014-06-13 | 2015-06-03 | Braid and gland packing |
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| JP2014122652 | 2014-06-13 | ||
| JP2014-122652 | 2014-06-13 |
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|---|---|---|---|---|
| JP2017133572A (en) * | 2016-01-26 | 2017-08-03 | ジャパンマテックス株式会社 | Gland packing and its manufacturing method |
| JP2020176681A (en) * | 2019-04-18 | 2020-10-29 | 中国電力株式会社 | Water leakage countermeasure device |
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| JPH05179231A (en) * | 1991-12-27 | 1993-07-20 | Ntn Corp | Molding material for seal ring |
| JPH05346175A (en) * | 1992-06-12 | 1993-12-27 | Nippon Pillar Packing Co Ltd | Gland packing |
| JP2004232806A (en) * | 2003-01-31 | 2004-08-19 | Japan Matekkusu Kk | Packing material and gland packing using the same |
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| JPS524433Y1 (en) * | 1974-10-01 | 1977-01-29 | ||
| JPS583039B2 (en) * | 1975-06-30 | 1983-01-19 | 松下電工株式会社 | Fukugoumetsukihou |
| JP3254830B2 (en) * | 1992-06-24 | 2002-02-12 | エヌオーケー株式会社 | Sintered sliding member |
| JPH1061777A (en) * | 1996-05-30 | 1998-03-06 | Ntn Corp | Synthetic resin-made seal ring |
| CN100434268C (en) * | 2004-12-27 | 2008-11-19 | 夏祥东 | High-grade laminated composite material and its production process |
| CN2775409Y (en) * | 2005-02-25 | 2006-04-26 | 祥景精机股份有限公司 | Clip built-in shaft seal driving part structure |
| WO2014046087A1 (en) * | 2012-09-21 | 2014-03-27 | 株式会社カネカ | Halogen-containing flameproof fibers, method for producing same, and flameproof fiber product using same |
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2015
- 2015-06-03 JP JP2016527763A patent/JPWO2015190365A1/en active Pending
- 2015-06-03 WO PCT/JP2015/066027 patent/WO2015190365A1/en active Application Filing
- 2015-06-12 TW TW104119046A patent/TWI656290B/en active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05179231A (en) * | 1991-12-27 | 1993-07-20 | Ntn Corp | Molding material for seal ring |
| JPH05346175A (en) * | 1992-06-12 | 1993-12-27 | Nippon Pillar Packing Co Ltd | Gland packing |
| JP2004232806A (en) * | 2003-01-31 | 2004-08-19 | Japan Matekkusu Kk | Packing material and gland packing using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017133572A (en) * | 2016-01-26 | 2017-08-03 | ジャパンマテックス株式会社 | Gland packing and its manufacturing method |
| JP2020176681A (en) * | 2019-04-18 | 2020-10-29 | 中国電力株式会社 | Water leakage countermeasure device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2015190365A1 (en) | 2017-04-20 |
| TW201608157A (en) | 2016-03-01 |
| TWI656290B (en) | 2019-04-11 |
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