JPS6217041A - Glass composition for fiber - Google Patents
Glass composition for fiberInfo
- Publication number
- JPS6217041A JPS6217041A JP15632985A JP15632985A JPS6217041A JP S6217041 A JPS6217041 A JP S6217041A JP 15632985 A JP15632985 A JP 15632985A JP 15632985 A JP15632985 A JP 15632985A JP S6217041 A JPS6217041 A JP S6217041A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- temperature
- composition
- devitrification
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は繊維用ガラス組成物に係り、特に旋回ガスジェ
ットをガラス溶融物に作用させてガラス短繊維を得るの
に適し、且つ不燃性に優れた繊維用ガラス組成物に関す
る。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a glass composition for fibers, which is particularly suitable for producing short glass fibers by applying a swirling gas jet to a glass melt, and is nonflammable. This invention relates to an excellent glass composition for fibers.
［従来の技術］
ガラス等の熱軟化性物質を細くして繊維化する方法とし
て、近年、いわゆる旋回ガスジェット法（ＲＧＪ法）が
提案された（特公昭５８−５７３７４号）、この方法は
、熱軟化性物質の円柱状溶融物流に、その進行方向に対
する横断面の外周の接線方向成分を有するガス流を、溶
融物が横方向に変位するのを防げるように接触させなが
ら高速で回転させ、細線化された糸状物質を遠心力によ
って引き出す方法である。この旋回ガスジーット法は、
従来の火炎法や遠心法等に比し、生産効率、得られる製
品品質の面で極めて有利であることが明らかになってき
ており、注目を集めている。[Prior Art] In recent years, the so-called rotating gas jet method (RGJ method) has been proposed as a method for thinning and forming fibers from heat-softening materials such as glass (Japanese Patent Publication No. 58-57374). Rotating the cylindrical melt stream of the thermosoftening substance at high speed while contacting it with a gas flow having a component tangential to the outer periphery of the cross section with respect to its traveling direction in such a way as to prevent the melt from being displaced in the lateral direction; This method uses centrifugal force to pull out thin filamentous substances. This swirling gas jet method is
It has become clear that this method is extremely advantageous in terms of production efficiency and product quality compared to conventional flame methods, centrifugal methods, etc., and is attracting attention.
この旋回ガスジェット法は、粘度約３０〜７０ポアズの
溶融物に適用することが好ましい。また、旋回ガスジェ
ット法によってガラス繊維を製造する場合、白金ないし
白金合金製の溶融ポットが使用されるが、このポットの
損傷を防止するために、ガラスの溶融作業温度（溶融ポ
ット内の最高温度で規定する）は１４００℃以下である
ことが必要であり、特にポットの寿命をより長期化する
点から、作業温度は１３２Ｏ℃以下であることが望まし
い。This swirling gas jet process is preferably applied to melts with a viscosity of about 30 to 70 poise. Furthermore, when producing glass fiber by the swirling gas jet method, a melting pot made of platinum or platinum alloy is used. ) is required to be 1400° C. or less, and in particular, from the viewpoint of prolonging the life of the pot, it is desirable that the working temperature be 1320° C. or less.
このため、旋回ジェット法に適切なガラス組成物は１３
２Ｏ℃以下の温度において３０〜７０ポアズの粘度を有
することが望まれるのである。Therefore, a suitable glass composition for the swirling jet method is 13
It is desired to have a viscosity of 30 to 70 poise at temperatures below 2O<0>C.
このような旋回ガスジェット法に適するガラス組成物と
して、先に、特開昭５６−５３５２に、重量百分率にし
て、ＳｉＯ２：３５〜４７、Ａ１２Ｏａ ： ９〜ｌ
５．Ｃａｏ ： １５〜４０、ＭｇＯ： Ｏ〜７．Ｎａ
２Ｏ： Ｏ〜ｌ ９、Ｋ ２Ｏ ：０〜１９、ただしＮ
ａ２Ｏ及びＫ２Ｏの合計量＝２〜１９、Ｂ２Ｏ３：３〜
８からなる繊維用ガラス組成物が提案された。上記繊維
用ガラス組成物は、旋回カスジェット法に適切な高温粘
度特性を有し、しかも安価な原料の使用が可能であり、
耐湿性にも優れている。As a glass composition suitable for such a swirling gas jet method, previously published in Japanese Patent Application Laid-Open No. 56-5352, SiO2: 35-47, A12Oa: 9-1 in weight percentage.
5. Cao: 15-40, MgO: O-7. Na
2O: O~l 9, K2O: 0~19, however, N
Total amount of a2O and K2O = 2 ~ 19, B2O3: 3 ~
A fiberglass composition consisting of 8 was proposed. The above-mentioned glass composition for fibers has high temperature viscosity characteristics suitable for the swirling gas jet method, and allows the use of inexpensive raw materials.
It also has excellent moisture resistance.
［発明が解決しようとする問題点］
しかるに、特開昭５６−５３５２に提示された組成範囲
を満たす組成物の中には、不燃性に優れていないものが
あることが判明した。[Problems to be Solved by the Invention] However, it has been found that some compositions satisfying the composition range proposed in JP-A-56-5352 do not have excellent nonflammability.
即ち、材料の持つ不燃性は１通常、建設省告示第１８２
８号（昭和４５年１２月２８日）に定められた不燃試験
によって評価され、該試験に合格した材料が不燃材料と
しての指定を受けることができる。この不燃試験は、基
材試験と表面試験とからなるが、前掲の特開昭５６−５
３５２に規定された組成範囲を満たす種々の組成物より
作製した短繊維ボードをこの不燃試験に供したところ、
必ずしも全組成範囲にわたって合格し得る特性を具備す
る訳ではないことが見出された。In other words, the nonflammability of the material is 1.
8 (December 28, 1970), and materials that pass the test can be designated as noncombustible materials. This nonflammability test consists of a base material test and a surface test, and is
When short fiber boards made from various compositions satisfying the composition range specified in 352 were subjected to this nonflammability test,
It has been found that the composition does not necessarily have acceptable properties over the entire composition range.
このガラス組成物の不燃性は、一般のグラスウール断熱
材や保温材等で不燃材料の用途に用いないものに対して
は規制されない。従って、この場合には、不燃性に優れ
ていないガラス組成物でも使用可能である。The nonflammability of this glass composition is not regulated for general glass wool insulation materials, heat insulating materials, etc. that are not used for noncombustible purposes. Therefore, in this case, even a glass composition that is not excellent in flame resistance can be used.
しかしながら、不燃性でないガラス組成物では製品の用
途が制限され、例えば不燃性と熱抵抗性の両特性を必要
とする用途には使用できないなど、使用上の不都合が生
ずる。However, non-flammable glass compositions have disadvantages in use, such as the limited use of the product and, for example, the inability to use them in applications that require both non-flammability and heat resistance.
このため、熱抵抗性等の数多くの品質性能と共に不燃性
を具備する、旋回ガスジェット法に適切なｔａ維用ガラ
ス組成物の出現が強く望まれていた。For this reason, there has been a strong desire for a TA fiber glass composition suitable for the swirling gas jet method, which has numerous quality properties such as heat resistance and is nonflammable.
［問題点を解決するための手段］
本発明のガラス組成物は、
それぞれ重量百分率で表わして、
ＳｉＯ２ ： ３５〜４７
Ａ旦２Ｏ３： ９〜１５
ＣａＯ：１５〜３０
Ｍｇ０ ・ ０〜７
Ｎａ２Ｏ ： １７〜２２
Ｋ ２Ｏ−０〜４
（ただし Ｎ ａ ２Ｏ及びＫ２Ｏの合計量：１８〜２
２）
Ｂ２Ｏに３〜６
を含むことを特徴とする。[Means for Solving the Problems] The glass composition of the present invention has the following components, each expressed in weight percentage: SiO2: 35-47 A2O3: 9-15 CaO: 15-30 Mg0.0-7 Na2O: 17 ~22 K2O-0~4 (however, total amount of Na2O and K2O: 18~2
2) It is characterized by containing 3 to 6 in B2O.
本発明において、ＳｉＯ２は４７重量％（以下、巾に％
と記載する。）を超えると、ガラスの溶融温度が高くな
り、作業温度が上昇して繊維系が太くなるなどの不都合
を生じる。また、３５％より少ないと、失透傾向が必要
以上に大きくなり、しかも耐湿性も悪くなる。好ましい
５ｉＯｚ配合割合は３６〜４２％である。In the present invention, SiO2 is 47% by weight (hereinafter referred to as % in width).
It is written as ), the melting temperature of the glass becomes high, causing problems such as an increase in working temperature and thickening of the fiber system. On the other hand, if it is less than 35%, the tendency to devitrify becomes greater than necessary, and moisture resistance also deteriorates. The preferred blending ratio of 5iOz is 36 to 42%.
Ａ ｆＬ ２Ｏ３は９％未満では耐湿性が箸しく低下し
、また１５％を超えると液相温度が上昇するので好まし
くない、好ましいＡ ｌ ２Ｏ ：ｌの配合割合は１２
〜１４％である。If A fL 2O3 is less than 9%, the moisture resistance will drop significantly, and if it exceeds 15%, the liquidus temperature will rise, which is undesirable.The preferred blending ratio of A l 2O :l is 12
~14%.
ＣａＯは、その配合割合が多くなるにつれて耐湿性が向
上するのであるが、３０％を超えると失透傾向が必要以
上に大きくなるので繊維製造上好ましくない、また、１
５％より少ないと耐湿性は □良いが、耐水性が
著しく低くなって不都合であ ）る。Moisture resistance of CaO improves as its blending ratio increases, but if it exceeds 30%, the tendency to devitrify increases more than necessary, which is undesirable for fiber production.
If it is less than 5%, the moisture resistance is good, but the water resistance becomes extremely low, which is inconvenient.
ＭｇＯはその配合割合が少ない方が、耐湿性が良い傾向
を示す。ＭｇＯが７％を超えると作業温度は低くなる反
面液相温度が上昇し、しかも耐湿性が著しく悪くなる。The smaller the blending ratio of MgO, the better the moisture resistance tends to be. If the MgO content exceeds 7%, the working temperature will decrease, but the liquidus temperature will increase, and the moisture resistance will deteriorate significantly.
従ってＭｇＯの配合割合は０〜７％以下とする。Therefore, the blending ratio of MgO is set to 0 to 7% or less.
Ｎａ２Ｏ及びＫ２Ｏは、いずれも作業温度を低下せしめ
るので、ガラス成分として相当量を含有させることが好
ましい、優れた不燃性を得るのに、有効な失透を生成す
るために、Ｎ ａ ２Ｏは１７〜２２％、Ｋ２Ｏは０〜
４％以下とする。なお、Ｎ ａ ２Ｏ及びＫ２Ｏの合計
量は１８＝２２である。Ｎ ａ ２Ｏ ＋ Ｋ ２Ｏが
１８％未満であると失透生成量が少なく不燃性の向上効
果が低く、また２２％を超えるととくに耐湿性が低下し
て好ましくない。Ｎ ａ ２Ｏとに’２Ｏの合計量の好
ましい範囲は１９％を超え２２％以下である。Since both Na2O and K2O lower the working temperature, it is preferable to include a considerable amount as a glass component.In order to obtain excellent nonflammability and to generate effective devitrification, Na2O is 17 ~22%, K2O is 0~
4% or less. Note that the total amount of N a 2O and K2O is 18=22. When N a 2 O + K 2 O is less than 18%, the amount of devitrification generated is small and the effect of improving nonflammability is low, and when it exceeds 22%, moisture resistance particularly decreases, which is not preferable. A preferable range of the total amount of Na 2O and 2O is more than 19% and less than 22%.
Ｂ２Ｏ３は作業温度及び液相温度のいずれも低下させる
効果を有する。Ｂ２Ｏ３の配合割合が３％未満ではその
効果は小さく、６％を超えると失透傾向が小さくなりす
ぎ、またガラスｍ雄の耐酸性を非常に低下させ、かつガ
ラスが高価になるので好ましくない。従って、Ｂ２Ｏ］
の配合割合は３〜６％とする。B2O3 has the effect of lowering both the working temperature and the liquidus temperature. If the blending ratio of B2O3 is less than 3%, the effect will be small, and if it exceeds 6%, the tendency to devitrify will be too small, the acid resistance of the glass will be greatly reduced, and the glass will become expensive, which is not preferable. Therefore, B2O]
The blending ratio is 3 to 6%.
なお、Ｓ ４ｍ２．Ａｌｐ ０３ 、ＣａＯ及びＭｇＯ
を１成分とするガラス組成物は、安価な原料として代表
的な珪砂、アプライド１１石灰石、ドロマイトを適宜に
組合せて利用することにより得られる。さらには、溶鉱
炉から多量に廃残物として発生する高炉スラグや鹿児島
地方に無尽に埋蔵しているシラス等の、近年安価な原料
として注目されているものを使用することもできる。従
って、Ｓ ｉ ０２ Ａ ｌ ２Ｏ３ 、 Ｃａ Ｏ
Ｍ ｇ Ｏ系を基本組成に選ぶことによって、使用原料
を廉価にすることができ、経済的に有利である。In addition, S 4m2. Alp 03 , CaO and MgO
A glass composition having as one component can be obtained by appropriately combining typical silica sand, applied 11 limestone, and dolomite as inexpensive raw materials. Furthermore, it is also possible to use materials that have recently attracted attention as inexpensive raw materials, such as blast furnace slag, which is generated in large quantities as waste residue from blast furnaces, and whitebait, which is found in limitless reserves in the Kagoshima region. Therefore, S i 02 A l 2O3 , Ca O
By selecting M g O system as the basic composition, the raw materials used can be made inexpensive, which is economically advantageous.
本発明においては、ガラスに付与される失透性の程度に
応じて、その他の配合成分及び各々の配合割合が限定さ
れる。即ち、不燃性を向上させるためには、失透生成量
が多い方が望ましいが、失透生成量が必要以上に増加し
た場合には、繊維化装置のノズル詰りを発生させるなど
ｍ雄製造上の障害が発生する原因となるので好ましくな
い、また、液相温度の上昇も同様の理由から好ましくな
い。従って、失透生成量は不燃性にとって必要かつ十分
なだけの量であることが好ましく、この量よりも少ない
と不燃性が低下し、逆に多すぎたり、液相温度が上昇す
ると、繊ｍ製造上の障害となり、好ましくない。In the present invention, other blending components and their respective blending ratios are limited depending on the degree of devitrification imparted to the glass. In other words, in order to improve nonflammability, it is desirable to have a large amount of devitrification produced, but if the amount of devitrification produced increases more than necessary, it may cause problems in manufacturing, such as clogging of the nozzle of the fiberizing equipment. This is undesirable because it causes trouble in the process, and an increase in liquidus temperature is also undesirable for the same reason. Therefore, it is preferable that the amount of devitrification generated is necessary and sufficient for non-flammability.If it is less than this amount, the non-flammability will decrease, and if it is too large or the liquidus temperature increases, the fiber m This is undesirable as it causes problems in manufacturing.
［作用］
本発明の繊維用ガラス組成物によれば、得られるガラス
に適度な量の失透が生成し、このため、ガラスの粘性を
上げることなく、ｍ維の溶融や軟化による変形を防止し
、これにより短繊維ボードの溶融や亀裂の発生を防止し
、不燃性を向上させることが可能である。[Function] According to the glass composition for fibers of the present invention, an appropriate amount of devitrification is generated in the resulting glass, thereby preventing deformation due to melting and softening of m-fibers without increasing the viscosity of the glass. However, this prevents the short fiber board from melting and cracking, and improves its nonflammability.
なお、以下に失透による作用について説明する。Note that the effect of devitrification will be explained below.
溶融や軟化による繊維の変形を防止して、ガラス組成物
に不燃性をもたせるには、粘性の高いガラス材料とすれ
ば良いのであるが、この場合には、通常、作業温度も上
昇するので製造上好ましくない。そこで、粘性を上げる
ことなくｍ雄の変形を防止するべく鋭意検討を重ねた結
果、短繊維ボードではある種の失透を生ずるガラス組成
物が効果的であることが見出された。In order to prevent the deformation of the fibers due to melting and softening and to make the glass composition nonflammable, it would be better to use a glass material with high viscosity, but in this case, the working temperature would also usually rise, so manufacturing Not good. Therefore, as a result of intensive studies in order to prevent the deformation of the glass without increasing the viscosity, it was discovered that a glass composition that causes a certain type of devitrification is effective for short fiber boards.
ガラスが失透すると脆性が上がるために強度が低下する
が、結晶化の程度によっては、逆にガラスの機械的強度
を高めかつ軟化温度を高め、耐熱性を向上せしめること
が知られている。When glass becomes devitrified, its strength decreases due to increased brittleness, but it is known that depending on the degree of crystallization, it can conversely increase the mechanical strength and softening temperature of the glass, thereby improving its heat resistance.
一般に、単位時間当りの失透生成量と温度との関係は、
第１ｒｇＪのように示され、最も失透を生じさせ易い温
度範囲があるので、この温度にガラスを保持することに
より失透を効率良く生じさせることができる。Generally, the relationship between the amount of devitrification produced per unit time and temperature is as follows:
Since there is a temperature range shown as the first rgJ in which devitrification is most likely to occur, devitrification can be efficiently caused by maintaining the glass at this temperature.
第２図は、種々の組成のガラスについて行った実験によ
り求められた各ガラスの失透生成量と温度との関係を示
すグラフである。なお、失透生成量はガラスの白濁の程
度で示している。第２図において■は不燃試験（表面試
験）に不合格な組成ガラス、■■は合格する組成ガラス
であり、■は■より繊維の溶融や変形量が少なく、不燃
性に優れたものである。FIG. 2 is a graph showing the relationship between the amount of devitrification produced and temperature for each glass, which was determined through experiments conducted on glasses of various compositions. Note that the amount of devitrification produced is indicated by the degree of cloudiness of the glass. In Figure 2, ■ indicates a composition glass that fails the nonflammability test (surface test), ■■ indicates a composition glass that passes, and ■ indicates a composition glass that has less melting and deformation of fibers than ■, and has excellent noncombustibility. .
なお、用いた各組成のガラスの温度、粘度特性を調べた
ところ、カラス組成による差は殆どなかった。本発明組
成のガラスは、いずれも■、■の組成のガラスと同じよ
うな失透生成能を有する。In addition, when the temperature and viscosity characteristics of the glasses of each composition used were investigated, there were almost no differences depending on the glass composition. The glasses with the compositions of the present invention both have the same devitrification-generating ability as the glasses with the compositions (1) and (2).
即ち、本発明組成のガラス繊維は、５００〜１０００℃
の温度範囲（不燃試験時の試験体表面温度は、はぼこの
温度となる。）にて速やかに失透を生じさせる。そして
、軟化温度が高く、しかも高強度であり、ボードに成形
したときに不燃性に優れ、熱溶融や熱亀裂を生じさせ難
いものとなる。That is, the glass fiber having the composition of the present invention has a temperature of 500 to 1000°C.
(The surface temperature of the test piece during the nonflammability test is the temperature of the bubble.) Promptly causes devitrification. Moreover, it has a high softening temperature and high strength, and when formed into a board, it has excellent nonflammability and is difficult to cause thermal melting or thermal cracking.
［実施例］ 以下、実施例及び比較例について説明する。[Example] Examples and comparative examples will be described below.
第１表に示す原料組成の試料番号１−１５のガラス試料
又はガラス繊維試料を、各々次のようにして作製した。Glass samples or glass fiber samples with sample numbers 1-15 having the raw material compositions shown in Table 1 were each produced as follows.
ガラス量として４００ｇになるように原料を調合し、１
３５０℃の電気炉内で４時間溶融した後、鉄板上に流し
出した。このガラスを冷却した後、１ｃｍ角以下の大き
さに粉砕したものをガラス試料とした。Mix the raw materials so that the amount of glass is 400g,
After melting in an electric furnace at 350°C for 4 hours, it was poured onto an iron plate. After this glass was cooled, it was crushed to a size of 1 cm square or less, which was used as a glass sample.
また、このガラス試料を、底面に内径１．８ｍｍ、長さ
６ｍｍのノズルのついた約１００ｃｃに白金ポットに投
入し、白金ポットの電気抵抗加熱により溶融した。白金
ポットのノズルから流出した溶融ガラスを、旋回ガスジ
ェット法により。Further, this glass sample was placed in a platinum pot of approximately 100 cc with a nozzle having an inner diameter of 1.8 mm and a length of 6 mm on the bottom, and was melted by electrical resistance heating of the platinum pot. The molten glass flowing out from the nozzle of the platinum pot is processed using the swirling gas jet method.
直径約７ＪＬの繊維に成形したものをガラス繊維試料と
した。A glass fiber sample was formed into a fiber having a diameter of about 7 JL.
各試料を用いて、各々、不燃性、耐湿性、作業温度、軟
磁性を調べた。結果を第１表に示す、なお各々の特性の
測定及び評価方法は下記に示す通りである。Each sample was examined for nonflammability, moisture resistance, working temperature, and soft magnetism. The results are shown in Table 1, and the measurement and evaluation methods for each characteristic are as shown below.
五二五
前述の不燃試験結果とガラス失透生成量との関係を調べ
る実験（第２図参照）より、■、■、■を標準試料とし
、失透生成量の多いもの（不燃性に優れたもの）からＯ
，Ｏ，Ｘの順に３段階に分ける。ここでは０以上で不燃
試験合格となる。木実流側で得られたガラス試料につい
ても前述の実験方法と同様の方法で失透を生成させ、そ
の失透生成量を標準試料と目視で比較し、不燃性を評価
した。525 From the experiment to investigate the relationship between the above-mentioned non-flammability test results and the amount of glass devitrification produced (see Figure 2), we used ■, ■, and ■ as standard samples, and found that ) to O
, O, and X in the order of three stages. Here, if it is 0 or more, it passes the nonflammability test. For the glass sample obtained on the wood flow side, devitrification was also generated in the same manner as the above-mentioned experimental method, and the amount of devitrification produced was visually compared with the standard sample to evaluate the nonflammability.
耐」Ｌ性
ガラスｔａｆｉ！試料２Ｏｇを縦横各々２Ｏｍｍ、厚さ
５０ｍｍのマット状に成形し、縦横２５０ｍｍ、厚さ３
ｍｍの２枚の鉄板の間に挿入し、ボルトとナツトを用い
てマットの厚みが５ｍｍになるように圧縮して固定する
。これを気温４０℃、相対湿度７０％にコントロールさ
れた恒温恒湿槽内に５日間放置する。その後、これを取
り出して鉄板をとり外し、マットを無加重で約１時間室
内に放置した後、厚みを測定する。得られた厚みの測定
結果を互いに比較して、厚みの大きいもの（耐湿性のよ
いもの）から０１Ｏ１Δ、×の順に４段階で評価した。"Resistance" L-resistant glass tafi! A sample of 20 g was formed into a mat shape of 20 mm in length and width and 50 mm in thickness.
Insert the mat between two steel plates with a diameter of 5 mm, and use bolts and nuts to compress and fix the mat to a thickness of 5 mm. This was left in a constant temperature and humidity chamber controlled at a temperature of 40° C. and a relative humidity of 70% for 5 days. Thereafter, the mat was taken out, the iron plate was removed, and the mat was left unloaded indoors for about 1 hour, and then the thickness was measured. The obtained thickness measurement results were compared with each other and evaluated on a four-level scale in the order of 01O1Δ and × from the largest thickness (the one with the best moisture resistance).
１呈１１
白金ポット（ガラス繊維試料の作製に用いたと同一のも
の）に、準備したカレー２１を投入し、白金ポットの電
気加熱により溶融し、ノズルより流出するガラス量が４
２Ｏ ｇ ／ ｈ ｒになったときのポット内最高温度
を作業温度とし、その値を示した。この温度はその時の
ポット内のガラス粘度がほぼ３０ポアズとなる温度であ
ることが、温度、粘度特性が既知のガラスでのテストか
ら確かめら゛れている。1 Presentation 11 Put the prepared curry 21 into a platinum pot (the same one used to prepare the glass fiber sample), and melt it by electric heating of the platinum pot until the amount of glass flowing out from the nozzle is 4.
The maximum temperature inside the pot when the temperature reached 2Og/hr was taken as the working temperature, and the value is shown. It has been confirmed from tests using glasses whose temperature and viscosity characteristics are known that this temperature is the temperature at which the viscosity of the glass in the pot at that time is approximately 30 poise.
吹」１性
上記白金ポットに旋回ガスジェット用のエアーノズルを
取付けて、ガラス溶融物をｍ酸化したときの、失透によ
るノズルの詰りぐあい、流出量の安定性から判断したも
のであり、安定性のよいものから順に＠、Ｏ，Δ、×、
××の５段階で示した。×中以下は繊維化ができなかっ
たものである。Air nozzle for a swirling gas jet is attached to the above platinum pot to oxidize the glass melt.This is determined from the clogging of the nozzle due to devitrification and the stability of the flow rate. In descending order of gender: @, O, Δ, ×,
It was shown in 5 stages of XX. * Medium and below are those in which fiberization was not possible.
第１表から明らかなように１本発明の実施例に係る繊維
用ガラス組成物の試料は、いずれも優れた不燃性を有し
、しかも吹繊性にも優れ、作業温度も１２３０℃以下と
低く、且つ耐湿性も十分良好であると判断できるもので
あり、繊維用ガラス組成物として極めて有用である。As is clear from Table 1, all of the samples of the glass composition for fibers according to Examples of the present invention have excellent nonflammability, excellent blowability, and a working temperature of 1230°C or less. It can be judged that the moisture resistance is low and that the moisture resistance is sufficiently good, making it extremely useful as a glass composition for fibers.
し効果］
以上詳述した通り、本発明の繊維用ガラス組成物により
得られるガラス組成物は、約５００〜ｔ ｏ ｏ ｏ
’ｃの温度にて速やかに失透を生じ、高軟化温度、高強
度となる。従って、かかるガラス繊維により製造される
ボード等のガラス＃Ｉｒａ成形体は、熱溶融や熱亀裂が
極めて生じにくく、不燃性に優れる。Effect] As detailed above, the glass composition obtained by the glass composition for fibers of the present invention has a
At a temperature of 'c, devitrification occurs rapidly, resulting in a high softening temperature and high strength. Therefore, glass #Ira molded bodies such as boards manufactured using such glass fibers are extremely unlikely to undergo thermal melting or thermal cracking, and are excellent in nonflammability.
また、本発明組成のガラスは、 ■ 極めて低廉価の原料から得られる。Furthermore, the glass having the composition of the present invention is ■ Obtained from extremely low-cost raw materials.
■ 低い作業温度でＭ＆維を製造することができる。■M&F can be produced at low working temperatures.
■ 耐湿性、吹繊性等の特性にも優れる。■ It also has excellent properties such as moisture resistance and blowability.
等の利点を有する。It has the following advantages.
本発明のガラス組成物は旋回ガスジェット法に供する原
料ガラスとして極めて好適である。The glass composition of the present invention is extremely suitable as a raw material glass to be subjected to the swirling gas jet method.
第１図は一般的なガラスの失透生成量と温度との定性的
な関係を示すグラフであり、第２図は失透生成量と温度
の測定結果を示すグラフである。FIG. 1 is a graph showing the qualitative relationship between the amount of devitrification produced in a general glass and temperature, and FIG. 2 is a graph showing the measurement results of the amount of devitrification produced and temperature.
Claims (2)
） Ｂ＿２Ｏ＿３：３〜６ を含むことを特徴とする繊維用ガラス組成物。(1) Each expressed in weight percentage: SiO_2: 35-47 Al_2O_3: 9-15 CaO: 15-30 MgO: 0-7 Na2O: 17-22 K_2O: 0-4 (however, the total amount of Na_2O and K_2O: 18 ~22
) B_2O_3:3-6 A glass composition for fibers.
２Ｏ＿３の含有率が１２〜１４重量％である特許請求の
範囲第１項に記載の繊維用ガラス組成物。(2) Content of SiO_2 is 36-42% by weight, Al_
The glass composition for fibers according to claim 1, wherein the content of 2O_3 is 12 to 14% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15632985A JPS6217041A (en) | 1985-07-16 | 1985-07-16 | Glass composition for fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15632985A JPS6217041A (en) | 1985-07-16 | 1985-07-16 | Glass composition for fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6217041A true JPS6217041A (en) | 1987-01-26 |
| JPH0444624B2 JPH0444624B2 (en) | 1992-07-22 |
Family
ID=15625402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15632985A Granted JPS6217041A (en) | 1985-07-16 | 1985-07-16 | Glass composition for fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6217041A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2883864A1 (en) * | 2005-04-01 | 2006-10-06 | Saint Gobain Isover Sa | COMPOSITIONS FOR GLASS FIBERS |
| JP2012526036A (en) * | 2009-05-08 | 2012-10-25 | セリン イ | Silica sand non-combustible material for asbestos substitution and its manufacturing method |
| JPWO2014002344A1 (en) * | 2012-06-29 | 2016-05-30 | ニチアス株式会社 | Heat resistant inorganic fiber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565352A (en) * | 1979-06-22 | 1981-01-20 | Nippon Sheet Glass Co Ltd | Glass composition for fiber |
-
1985
- 1985-07-16 JP JP15632985A patent/JPS6217041A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565352A (en) * | 1979-06-22 | 1981-01-20 | Nippon Sheet Glass Co Ltd | Glass composition for fiber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2883864A1 (en) * | 2005-04-01 | 2006-10-06 | Saint Gobain Isover Sa | COMPOSITIONS FOR GLASS FIBERS |
| WO2006103376A3 (en) * | 2005-04-01 | 2007-01-18 | Saint Gobain Isover | Glass fibre compositions |
| US7704902B2 (en) | 2005-04-01 | 2010-04-27 | Saint-Gobain Isover | Glass fibre compositions |
| JP2012526036A (en) * | 2009-05-08 | 2012-10-25 | セリン イ | Silica sand non-combustible material for asbestos substitution and its manufacturing method |
| JPWO2014002344A1 (en) * | 2012-06-29 | 2016-05-30 | ニチアス株式会社 | Heat resistant inorganic fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0444624B2 (en) | 1992-07-22 |
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