JPS62182141A - Hydraulic composition - Google Patents
Hydraulic compositionInfo
- Publication number
- JPS62182141A JPS62182141A JP2487186A JP2487186A JPS62182141A JP S62182141 A JPS62182141 A JP S62182141A JP 2487186 A JP2487186 A JP 2487186A JP 2487186 A JP2487186 A JP 2487186A JP S62182141 A JPS62182141 A JP S62182141A
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- fibrillated
- cement
- acrylic
- fiber
- 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.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims description 21
- 239000000835 fiber Substances 0.000 claims description 49
- 229920002972 Acrylic fiber Polymers 0.000 claims description 20
- 206010061592 cardiac fibrillation Diseases 0.000 claims description 11
- 230000002600 fibrillogenic effect Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000012783 reinforcing fiber Substances 0.000 claims description 8
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 4
- 229920002239 polyacrylonitrile Polymers 0.000 claims 2
- 239000004568 cement Substances 0.000 description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 229920000642 polymer Polymers 0.000 description 20
- 238000000034 method Methods 0.000 description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical class C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 14
- 239000010454 slate Substances 0.000 description 13
- 239000010425 asbestos Substances 0.000 description 11
- 229910052895 riebeckite Inorganic materials 0.000 description 11
- 239000002002 slurry Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 9
- 238000002166 wet spinning Methods 0.000 description 9
- 238000000578 dry spinning Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 238000009987 spinning Methods 0.000 description 7
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- 230000015271 coagulation Effects 0.000 description 6
- 238000005345 coagulation Methods 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000010893 paper waste Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229920002978 Vinylon Polymers 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- OYUNTGBISCIYPW-UHFFFAOYSA-N 2-chloroprop-2-enenitrile Chemical compound ClC(=C)C#N OYUNTGBISCIYPW-UHFFFAOYSA-N 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- XEEYSDHEOQHCDA-UHFFFAOYSA-N 2-methylprop-2-ene-1-sulfonic acid Chemical compound CC(=C)CS(O)(=O)=O XEEYSDHEOQHCDA-UHFFFAOYSA-N 0.000 description 1
- NJMYQRVWBCSLEU-UHFFFAOYSA-N 4-hydroxy-2-methylidenebutanoic acid Chemical compound OCCC(=C)C(O)=O NJMYQRVWBCSLEU-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229920002544 Olefin fiber Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229920006317 cationic polymer Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920006240 drawn fiber Polymers 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- UACSZOWTRIJIFU-UHFFFAOYSA-N hydroxymethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCO UACSZOWTRIJIFU-UHFFFAOYSA-N 0.000 description 1
- GJIDOLBZYSCZRX-UHFFFAOYSA-N hydroxymethyl prop-2-enoate Chemical compound OCOC(=O)C=C GJIDOLBZYSCZRX-UHFFFAOYSA-N 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910001867 inorganic solvent Inorganic materials 0.000 description 1
- 239000003049 inorganic solvent Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004767 olefin fiber Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- UIIIBRHUICCMAI-UHFFFAOYSA-N prop-2-ene-1-sulfonic acid Chemical compound OS(=O)(=O)CC=C UIIIBRHUICCMAI-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0608—Fibrilles, e.g. fibrillated films
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、耐熱性、耐薬品性および機械的強度に優れた
フィブリル化された繊維と未フィブリル化補強繊維とを
配合してなる水硬性組成物に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention provides a hydraulic fiber which is made by blending fibrillated fibers with excellent heat resistance, chemical resistance and mechanical strength and non-fibrillated reinforcing fibers. Regarding the composition.
(従来の技術)
従来、セメントや石膏などの水硬性物質の補強材には、
アスベストが広く使用されている。(Conventional technology) Conventionally, reinforcing materials for hydraulic materials such as cement and gypsum were
Asbestos is widely used.
しかしながら、このアスベストは価格の変動が大きく、
製品コストがアスベストの価格により変動するだりでな
くて、このアスベストの粉塵が作業者のR康を阻害する
ことが明白になったために、アスベストに代わる繊維に
対する要望が強まり、これまでにガラス繊維、炭素繊維
、スチール繊維、オレフィン系繊維、“ビニロン′”、
アクリル系繊維およびアラミド繊維など多くの繊維がア
スベスト代替繊維として提案されてきた。これらの繊維
の中で、価格が安く、高強力で、耐アルカリ性に優れて
いるアクリル系繊維が注目され、セメント補強用、特に
スレートの分野でアスベストに代えて使用されようとし
ている。However, the price of asbestos fluctuates widely,
Not only does the product cost vary depending on the price of asbestos, but it has also become clear that asbestos dust impairs the health of workers.Therefore, there has been a growing demand for fibers that can replace asbestos, and so far glass fibers, Carbon fiber, steel fiber, olefin fiber, “vinylon′”,
Many fibers have been proposed as asbestos substitutes, including acrylic fibers and aramid fibers. Among these fibers, acrylic fibers are attracting attention because of their low price, high strength, and excellent alkali resistance, and are being used in place of asbestos for cement reinforcement, especially in the field of slate.
しかし、このアクリル系繊維は、アスベストと比較する
と、繊維径が著しく大きいから、抄造法で製造されるス
レートの製造工程でセメント粒子を有効に捕捉すること
ができず、丸網シリンダーの金網を通過する排水中にセ
メント粒子が流出して終う。したがって、該アクリル系
繊維は単独で使用するのではなくて、通常故紙パルプや
木材パルプなどのフィブリル状繊維と(ff用して使用
されるが、これらのパルプと併用すると、スレート中の
有機物の但が増大し、難燃性が低下したり、また、パル
プの吸湿性に起因してスレートの寸法安定性が低下する
という問題があった。However, this acrylic fiber has a significantly larger fiber diameter than asbestos, so it cannot effectively capture cement particles during the manufacturing process of slate manufactured by the papermaking method, and it passes through the wire mesh of the circular mesh cylinder. Cement particles end up flowing out into the wastewater. Therefore, the acrylic fiber is not used alone, but is usually used in combination with fibrillar fibers such as waste paper pulp and wood pulp (ff), but when used in combination with these pulps, organic matter in the slate is However, there have been problems in that the flame retardance is decreased due to an increase in the flame retardance, and the dimensional stability of the slate is decreased due to the hygroscopicity of the pulp.
このアスベスト代替用のアクリル系llffの欠点を改
良するために、たとえば特公昭53−46923号公報
には、60モル%以上のアクリロニトリル(以下、AN
と略す〉と40モル%以下のビニルカルボン酸との共重
合体からなるアクリル系繊維をアルカリ性水溶液で処理
した後、叩解した繊維が提案されているが、フィブリル
化度の高い、戸水度の小さいアクリル系繊維を得るため
には、共重合成分の量を多くしたAN系ポリマを多量に
混合して紡糸する必要があり、耐アルカリ性などの耐薬
品性および耐熱性が悪化し、加えて機械的強度も低下す
るため、セメント補強などのアスベスト代替繊維として
は性能上不充分であった。In order to improve the drawbacks of this acrylic llff as an asbestos substitute, for example, Japanese Patent Publication No. 53-46923 discloses that 60 mol% or more of acrylonitrile (hereinafter referred to as AN
It has been proposed that an acrylic fiber made of a copolymer of 40 mol% or less of vinylcarboxylic acid and treated with an alkaline aqueous solution and then beaten has been proposed, but it has a high degree of fibrillation and a low water content. In order to obtain acrylic fibers, it is necessary to mix and spin a large amount of AN-based polymer with a large amount of copolymerized components, which deteriorates chemical resistance such as alkali resistance and heat resistance, and also causes mechanical problems. Because of its reduced strength, it was unsatisfactory as an asbestos substitute for cement reinforcement.
また、特開昭56−100163号公報には、ANのモ
ル濃度が33%以上で、好ましくは93%以下のAN系
ポリマからなるフィルムまたはテープをフィブリル化し
たものを強化用繊維として使用した水硬性物質が提案さ
れているが、このアクリル系フィブリル化繊維は、フィ
ブリル化の程度に限界があり、スレートの抄造工程で故
紙パルプなどの併用を必要とし、そのためjNられるス
レートの寸法安定性が不充分であった。また、共重合成
分が多いために耐アルカリ性に劣り、スレートの耐久性
が低く、実用性能に問題があった。Furthermore, JP-A-56-100163 discloses that a film or tape made of an AN-based polymer having a molar concentration of AN of 33% or more and preferably 93% or less is fibrillated and is used as a reinforcing fiber. A hard material has been proposed, but this acrylic fibrillated fiber has a limited degree of fibrillation and requires the use of waste paper pulp in the slate making process, resulting in unstable dimensional stability of the slate. It was enough. In addition, because of the large amount of copolymerized components, the alkali resistance was poor, the durability of the slate was low, and there were problems in practical performance.
(発明の解決しようとする問題点)
本発明の目的は、フィブリル化度の高い、すなわらシ戸
水度が小さ”く、かつ耐アルカリ性などに代表される耐
薬品性、耐熱性および機械的強度に優れたフィブリル化
されたアクリル系繊維と未フィブリル化補強繊維を水硬
性物質に配合することによって、スレートなどの製造工
程における抄造性に優れた水硬性組成物、特に曲げ強度
などの機械的強度に優れ、高度の寸法安定性を有するス
レートなどの成形製品を与える水硬性組成物を提供する
にある。(Problems to be Solved by the Invention) The object of the present invention is to have a high degree of fibrillation, that is, a low water content, and to have chemical resistance such as alkali resistance, heat resistance, and mechanical properties. By blending fibrillated acrylic fibers with excellent strength and non-fibrillated reinforcing fibers into a hydraulic material, a hydraulic composition with excellent paper formability in the manufacturing process of slate etc., especially mechanical strength such as bending strength. An object of the present invention is to provide a hydraulic composition that provides molded products such as slate with excellent strength and high dimensional stability.
(問題点を解決するための手段)
このような本発明の目的は、前記特許請求の範囲に記載
したように、
1−ル
水硬性物質に少なくとも95ト%のアクリロニトリルを
含有し、極限粘度が2.5以上であるアクリロニトリル
系重合体からなり、フィブリル化前の引張強度が少なく
とも10g/d以上であり、600cc以下のP水度お
よび0.1〜10mmを5型組%以下配合してなる水硬
性組成物によって達成することができる。(Means for Solving the Problems) As described in the claims, the object of the present invention is to provide a 1-l hydraulic material containing at least 95% acrylonitrile and having an intrinsic viscosity of 2.5 or more, the tensile strength before fibrillation is at least 10 g/d or more, and the P water content is 600 cc or less and 0.1 to 10 mm is blended at 5% or less. This can be achieved by a hydraulic composition.
本発明の特徴の一つは、フィブリル化されたア以上の高
重合度ポリマからなる点にあり、このようなAN系重合
体から当該繊維が構成されることによって、はじめてそ
の機械的強度、特にフィブリル化前の引張強度が10g
/d以上という高強度で、耐薬品性に優れたフィブリル
化繊維とすることができる。そして、も一つの重要な特
徴は、該フィブリル化されたアクリル系繊維のP水度が
600cc以下である点であり、このような;戸水度を
有することによって、はじめて本発明の目的とする上記
抄造法におけるスレートの抄造性に優れた効果を奏する
のである。One of the features of the present invention is that it is made of a fibrillated polymer with a high polymerization degree of A or higher, and by constructing the fiber from such an AN-based polymer, its mechanical strength, especially Tensile strength before fibrillation is 10g
A fibrillated fiber with high strength of /d or more and excellent chemical resistance can be obtained. Another important feature is that the fibrillated acrylic fiber has a P water content of 600 cc or less. This has an excellent effect on the paper-making properties of slate in the paper-making method.
このような重合体組成および重合度を有するAN系ポリ
マを用いて、引張強度が大きく、;戸水度600CC以
下という値で示される高度のフィブリル化れた繊維を得
るためには、以下に詳jホする特定の製造手段を採用す
ることが必要である。In order to obtain a highly fibrillated fiber with a high tensile strength and a water resistance of 600 CC or less using an AN-based polymer having such a polymer composition and degree of polymerization, the details are described below. It is necessary to employ specific manufacturing means.
すなわち、まず紡糸方法として、前記組成および重合度
を有するAN系重合体の紡糸原液を紡糸口金孔から一旦
空気、窒素、アルゴン、ヘリウムなどの不活性雰囲気中
に吐出し、この吐出ポリマを不活性雰囲気の微小空間を
経由せしめた俊に該紡糸原液の凝固剤中に導いて凝固さ
せる、いわゆる乾・湿式紡糸法によって繊維糸条を形成
することである。That is, first, as a spinning method, a spinning stock solution of an AN-based polymer having the above composition and degree of polymerization is once discharged from a spinneret hole into an inert atmosphere such as air, nitrogen, argon, helium, etc., and this discharged polymer is inactivated. Fiber threads are formed by the so-called dry/wet spinning method, in which the fibers are passed through a microscopic space in the atmosphere and introduced into a coagulant in the spinning dope to coagulate.
N系重合体から該ポリマの高分子鎖が繊維軸方向に高度
に配向し、10q/d以上の引張強度を有する高強度繊
維とするには、通常の湿式紡糸や乾式紡糸によっては製
造できず、上記の乾・湿式紡糸を適用してはじめて製造
することができる。In order to make a high-strength fiber from an N-based polymer in which the polymer chains of the polymer are highly oriented in the fiber axis direction and have a tensile strength of 10q/d or more, it cannot be produced by normal wet spinning or dry spinning. , can only be produced by applying the above-mentioned dry/wet spinning.
そして得られた繊維は、その繊維長ざを0.1〜”10
mmの範囲に切断し叩1.ffi理をm”tことが望ま
しいが、この場合に、叩解による繊維のフィブリル化の
程度は、戸水度が6000C以下、好ましくは200〜
5000Cの範囲内になるように叩解することが必要で
ある。すなわち、P水石600cc以下という要件は、
スレートを抄造法で製造する際に、丸網シリンダーにお
けるセメントスラリーの濾過速度を低下させ、それによ
って;濾過面積を増大させて、シリンダー上に抄き上げ
られる固形分を多くしたり、シリンダーから排出される
セメント粒子の流出を防止するなどの抄造性の上で極め
て重要である。The obtained fibers have a fiber length of 0.1 to 10
Cut into pieces of mm and punch 1. It is desirable that the fibrillation temperature is m"t, but in this case, the degree of fibrillation of the fibers by beating should be such that the degree of fibrillation of the fibers is 6000C or less, preferably 200C or less.
It is necessary to beat the material to within a range of 5000C. In other words, the requirement of P suiseki 600cc or less is,
When producing slate by the papermaking method, the filtration rate of the cement slurry in the round cylinder is reduced, thereby; the filtration area is increased and more solids are scooped onto the cylinder and discharged from the cylinder. This is extremely important in terms of paperability, such as preventing cement particles from flowing out.
重合性を有するモノマ、たとえばアクリル酸、メタクリ
ル酸、イタコン酸、などのジカルボン酸およびそれらの
低級アルキルエステル類、ヒドロキシメチルアクリレー
ト、ヒドロキシエチルアクリレート、ヒドロキシメチル
メタクリレートなどのカルボン酸の水酸基を含有するヒ
ドロキシアルキルアクリレート、アクリルアミド、メタ
クリルアミド、α−クロルアクリロニトリル、ヒドロキ
シエチルアクリル酸、アリルスルホン酸、メタクリルス
ルホン酸などとの共重合体がある。Polymerizable monomers, such as dicarboxylic acids such as acrylic acid, methacrylic acid, and itaconic acid, and their lower alkyl esters, and hydroxyalkyl containing a hydroxyl group of carboxylic acids such as hydroxymethyl acrylate, hydroxyethyl acrylate, and hydroxymethyl methacrylate. There are copolymers with acrylate, acrylamide, methacrylamide, α-chloroacrylonitrile, hydroxyethyl acrylic acid, allylsulfonic acid, methacrylsulfonic acid, etc.
乾・湿式紡糸の条件としては、上記AN系ポリマをジメ
チルスルホキシド(DMSO> 、ジメチルアセタミド
(DMAc)、ジメチルホルムアミド(DMF> 、な
どの有l1tu剤、塩化力ルシュウム、塩化亜鉛、ロダ
ンソーダなどの無機塩濃厚水溶液、硝酸などの無機系溶
剤に溶解して、′溶液粘度が2000ボイス以上、好ま
しくは3,000〜10,000ボイズ、ポリマ濃度が
5〜20%の紡糸原液を作成する。この紡糸原液を紡糸
口金面と凝固浴液面との間の距離を1〜20mm、好ま
しくは3〜10mmの範囲内に設定し、該紡糸口金孔か
ら紡糸口金面と凝固浴液面とで形成される微小空間に吐
出した後、凝固浴に導き凝固させ、次いで得られた凝固
繊維糸条を常法により、水洗、脱溶媒、1次延伸、乾燥
・緻密化、2次延伸、熱処理などのあと処理工程を経由
せしめて延伸繊維糸条とする。この乾・湿式紡糸によっ
て得られる繊維糸条は、延伸性が極めて優れているが、
好ましくは2次延伸方法として、150〜270℃の乾
熱下に1.1倍、好ましくは1.5倍以上延伸し、全有
効延伸倍率が少なくとも10倍、好ましくは12倍以上
になるように延伸し、その繊度を0.1〜10デニール
(d)、好ましくは0.5〜5dの範囲内するのがよい
。The conditions for dry/wet spinning are as follows: A spinning stock solution having a solution viscosity of 2,000 voids or more, preferably 3,000 to 10,000 voids, and a polymer concentration of 5 to 20% is prepared by dissolving it in an inorganic solvent such as a concentrated aqueous solution of an inorganic salt or nitric acid. The distance between the spinneret surface and the coagulation bath liquid level is set within the range of 1 to 20 mm, preferably 3 to 10 mm, and the spinning dope is formed by the spinneret surface and the coagulation bath liquid surface from the spinneret hole. After discharging it into a microspace, it is introduced into a coagulation bath and coagulated, and then the obtained coagulated fiber thread is washed with water, desolventized, primary stretching, drying/densification, secondary stretching, heat treatment, etc. The fibers are passed through a processing step to form drawn fiber threads.The fiber threads obtained by this dry/wet spinning have extremely excellent drawability.
Preferably, as a secondary stretching method, stretching is carried out by 1.1 times, preferably 1.5 times or more, under dry heat at 150 to 270°C, so that the total effective stretching ratio is at least 10 times, preferably 12 times or more. It is preferred that the fineness is within the range of 0.1 to 10 denier (d), preferably 0.5 to 5 d.
かくして得られる繊維は、通常引張強度が10q/d以
上、引張弾性率が1800/d以上、結節強度が2.2
q/d以上の機械的物性を有し、X線結品配向度で93
%以上の高度の配向を示す。The fibers thus obtained usually have a tensile strength of 10 q/d or more, a tensile modulus of 1800/d or more, and a knot strength of 2.2.
It has mechanical properties of q/d or more, and has an X-ray crystal orientation of 93
% or more.
得られた繊維は、上述したように、長さ0.1〜iQr
T1mにカットされた後、ビータ−、リファイナー、ビ
クトリミル、パルベラ、イザー、ボールミル、PEIミ
ル、ジェット空気流などの叩解手段を適用して、前述し
たように戸水度が600CC以下、好ましくは200〜
500ccの範囲になるようにフィブリル化される。The obtained fibers have a length of 0.1 to iQr, as described above.
After being cut to T1m, a beating means such as a beater, refiner, Victory mill, Pulvera, Iser, ball mill, PEI mill, jet air flow, etc. is applied to obtain a water degree of 600 CC or less, preferably 200 to 200 CC, as described above.
It is fibrillated to a range of 500 cc.
このフィブリル化されたアクリル系繊維の水硬性組成物
に対する配合量は、0.5〜10mm%、好ましくは2
〜6重足%の範囲内がよい。この配合量が0.5%より
も少なくなると、水硬性組成物に充分な抄造性を与える
ことができないし、また得られる一成形製品に充分な補
強効果を付与できなくなるし、10%を越えると、水硬
性組成物中にあける該フィブリル化繊維の分散性が悪化
するので好ましくない。The amount of this fibrillated acrylic fiber in the hydraulic composition is 0.5 to 10 mm%, preferably 2
The range of 6% to 6% is preferable. If this amount is less than 0.5%, it will not be possible to provide sufficient paper formability to the hydraulic composition, and it will not be possible to provide a sufficient reinforcing effect to the resulting molded product, and if it exceeds 10%. This is not preferable because the dispersibility of the fibrillated fibers in the hydraulic composition deteriorates.
本発明の水硬性組成物には、上記フィブリル化されたア
クリル系繊維に加えて、フィブリル化されさていない、
すなわち未フィブリル化繊維を補強繊維として配合する
ことが必要である。In addition to the above-mentioned fibrillated acrylic fibers, the hydraulic composition of the present invention includes non-fibrillated acrylic fibers.
That is, it is necessary to incorporate non-fibrillated fibers as reinforcing fibers.
このような未フィブリル化繊維としては、たとえば耐ア
ルカリ性を有するガラス繊維、炭素繊維などの無機繊維
、“ビニロン″や高強度アクリル系繊維および“ケブラ
ーパの商品名で知られているアラミド繊MLなどがある
が、好ましくは前記フィブリル化されたアクリル系繊維
の原料である未フィブリル化繊維がよい。 すなわち、
セメントなどの水硬性物質に対する接着性、耐アルカリ
性、吸水性並びに製品の寸法安定性などを考慮すると、
前記高強度アクリル系繊維、さらに好ましくは、結節強
度が2.2q/d以上で、X線結晶配向度が93%以上
、繊度が0.1〜10デニール(d)、好ましくは0.
5〜5d、繊維長が0.5〜15mmのものがが右利で
ある。Examples of such non-fibrillated fibers include alkali-resistant glass fibers, inorganic fibers such as carbon fibers, "vinylon", high-strength acrylic fibers, and aramid fiber ML known under the trade name "Kebrapa". However, non-fibrillated fibers, which are the raw materials for the fibrillated acrylic fibers, are preferable.
Considering adhesion to hydraulic substances such as cement, alkali resistance, water absorption, and dimensional stability of the product,
The high-strength acrylic fiber, more preferably, has a knot strength of 2.2 q/d or more, an X-ray crystal orientation of 93% or more, and a fineness of 0.1 to 10 denier (d), preferably 0.2 q/d or more.
Those with a fiber length of 5 to 5 d and a fiber length of 0.5 to 15 mm are right-handed.
そして、この補強lli紺の配合量は、5重量%以下、
好ましくは0.1〜3%の範囲内がよく、この範囲外に
なると水硬性組成物における分散性が低下し、補強効果
を期待できなくなるので好ましくない。The blending amount of this reinforced lli navy blue is 5% by weight or less,
Preferably, it is within the range of 0.1 to 3%, and if it is outside this range, the dispersibility in the hydraulic composition will decrease and no reinforcing effect can be expected, so it is not preferable.
ざらに本発明のフィブリル化繊維および未フィブリル化
繊維には、水硬性物質に対する上記フィブリル化繊維お
よび未フィブリル化繊維の接合性、分散性を改良するた
めに、界面活性剤や樹脂エマルジョンおよび高分子凝集
剤を付着させてもよい。Roughly, the fibrillated fibers and non-fibrillated fibers of the present invention may contain surfactants, resin emulsions, and polymers in order to improve the adhesion and dispersibility of the fibrillated fibers and non-fibrillated fibers to hydraulic substances. A flocculant may also be attached.
特にノニオンまたはカチオン系高分子凝集剤の付与は、
たとえばセメント板などの抄造性と曲げ強度等の向上に
優れた効果を奏する。In particular, the addition of nonionic or cationic polymer flocculants is
For example, it has an excellent effect on improving the formability and bending strength of cement boards and the like.
また、本発明の水硬性組成物を構成する水硬性物質とし
ては、水和によって硬化する無機物質、たとえばポルト
ランドセメント、アルミナセメント、スラグセメント、
シリカセメント、石膏、珪酸カルシウムなどを挙げるこ
とができる。Further, as the hydraulic substance constituting the hydraulic composition of the present invention, inorganic substances that harden by hydration, such as portland cement, alumina cement, slag cement,
Examples include silica cement, gypsum, and calcium silicate.
そして、これらの水硬性物質に多孔性構造または軽量化
構造を与えるために、パーライト、シラスバルーン、ガ
ラスバルーンなどを配合することができる。In order to give these hydraulic materials a porous structure or a lightweight structure, pearlite, shirasu balloons, glass balloons, etc. can be blended.
本発明になる水硬性組成物からセメント板などの成形製
品を製造する手段としては、公知の各種手段が適用され
る。たとえばハチニック法と呼ばれる水硬性物質のスラ
リーを抄造し、セメント板にする方法、セメントなどの
水硬性組成物を吹き付ける方法、水硬性組成物を金型に
注入する方法などがおる。好ましくはハチニック法がよ
い。Various known methods can be used to produce molded products such as cement boards from the hydraulic composition of the present invention. For example, there are methods such as the Hachinic method, in which a slurry of a hydraulic material is made into a cement board, a method in which a hydraulic composition such as cement is sprayed, and a method in which a hydraulic composition is injected into a mold. Preferably, the Hachinik method is used.
本発明になる水硬性組成物は、そこに配合されるフィブ
リル化されたアクリル系繊維と補強繊維が安定性よく、
分散、配合され、優れた抄造性を示し、この水硬性組成
物から得られる成形製品は、耐薬品性、寸法安定性、並
びに機械的強度などにおいて、アスベストを配合した水
硬性組成物から1qられる製品を凌駕する性能を有する
。特に抄造法で製造されるスレート製品においては、大
きな吸水性を有する天然パルプを配合しないでも、良好
な抄造性を示し、曲げ強度はもちろんのこと、寸法安定
性、耐衝撃性などにおいても極めて優れた性能を有し、
建築資材および土木資材など多くの用途において有用な
スレート製品を与えるのである。In the hydraulic composition of the present invention, the fibrillated acrylic fibers and reinforcing fibers blended therein have good stability,
The molded products obtained from this hydraulic composition, which are dispersed and blended and exhibit excellent paper formability, are 1q superior to hydraulic compositions containing asbestos in terms of chemical resistance, dimensional stability, and mechanical strength. It has performance that surpasses that of other products. In particular, slate products manufactured using the papermaking method show good papermaking properties even without incorporating natural pulp with high water absorption, and are extremely superior not only in bending strength but also in dimensional stability and impact resistance. It has excellent performance,
This provides a slate product useful in many applications, including building and civil engineering materials.
以下、実施例により本発明の効果をさらに具体的に説明
する。Hereinafter, the effects of the present invention will be explained in more detail with reference to Examples.
なお、本発明において、極限粘度、;戸水度、セメント
・スラリー濾過速度、セメント透過率およびセメント板
の特性は次の測定法により測定された値である。In the present invention, the intrinsic viscosity, water level, cement slurry filtration rate, cement permeability, and properties of the cement board are values measured by the following measuring method.
極限粘度ニア5mqの乾燥AN系ポリマをフラスコに入
れ、0.1Nのヂオシアン酸ソーダを含有するDMF2
5mlを加えて、完全に溶解する。A dry AN-based polymer with an intrinsic viscosity of near 5 mq was placed in a flask, and DMF2 containing 0.1N sodium diocyanate was added.
Add 5 ml and dissolve completely.
得られたポリマ溶液をオストワルド粘度h1を用いて2
0℃で比粘度を測定し、次式にしたがって極限粘度を算
出する。The obtained polymer solution is 2 using Ostwald viscosity h1.
The specific viscosity is measured at 0°C, and the intrinsic viscosity is calculated according to the following formula.
極限粘度=
戸水石:カナデアン標準;戸水度であり、JIS−P−
8121に規定されている測定法に準じて測定した。Intrinsic viscosity = Tomizu stone: Canadian standard; Tomizu degree, JIS-P-
The measurement was performed according to the measurement method specified in 8121.
セメントスラリー濾過速度およびセメント透過率:フィ
ブリル化されたアクリル系繊維0.6CI、Ca (O
H)20.6g、Al1 (SO4)30゜60、ポル
トランドセメント28.2CIを水11に入れ、攪拌混
合した後、アニオン性ポリアクリルアミド系高分子凝集
剤を1100pp添加し、ゆっくりy4拌してセメント
スラリーを得た。次いで、上記セメントスラリーを50
メツシユ、面積的82cm2の金網で一過し、その時の
濾過速度(cc/min>と金網を通過するセメントの
可(重量%)を測定し透過率を求めた。Cement slurry filtration rate and cement permeability: fibrillated acrylic fibers 0.6CI, Ca(O
H) 20.6g, Al1 (SO4) 30°60, Portland cement 28.2CI were added to water 11, stirred and mixed, then 1100pp of anionic polyacrylamide polymer flocculant was added and slowly stirred to form the cement. Got slurry. Next, 50% of the above cement slurry
The cement was passed through a wire mesh having an area of 82 cm2, and the filtration rate (cc/min>) and the percentage of cement passing through the wire mesh (weight %) were measured to determine the transmittance.
曲げ強度:セメント板から試験片を切り出しJIs−に
−6911に規定されている測定法に準じて測定した。Bending strength: A test piece was cut out from a cement board and measured according to the measuring method specified in JIS-6911.
吸水率および吸水長さ変化率:
セメント板から試験片を切り出し、JIS−A−541
8に規定されている測定法に準じて測定した。Water absorption rate and water absorption length change rate: A test piece was cut out from a cement board and tested according to JIS-A-541.
The measurement was performed according to the measurement method specified in Section 8.
比重:
セメント板から切り出した試験片について、絶乾、飽水
および水中小母をそれぞれ測定し、次式に基づいて算出
される比重によって示した。Specific Gravity: For a test piece cut out from a cement board, bone dry, saturated, and submerged particles were measured, and the specific gravity was calculated based on the following formula.
比重=絶乾正量/(飽水手足−水中重量)実施例1〜4
、比較例1〜3
AN100%をDMSO中で溶液重合し、第1表に示す
極限粘度の異なるAN系ポリマを作成した。得られたポ
リマ溶液をその溶液粘度ガ3000ポイズ(45°C)
になるようにポリマ濃度を調整し、紡糸原液を作成した
。Specific gravity = Absolute dry weight / (saturated limbs - weight in water) Examples 1 to 4
, Comparative Examples 1 to 3 100% AN was solution polymerized in DMSO to create AN-based polymers having different intrinsic viscosities shown in Table 1. The resulting polymer solution was heated to a viscosity of 3000 poise (45°C).
The polymer concentration was adjusted so that the spinning dope was prepared.
これらの紡糸原液を用いてそれぞれ湿式および乾・湿式
紡糸を行った。凝固浴としては、いずれの方法において
も20’C155%DMSO水溶液を使用した。また、
乾・湿式紡糸の場合の紡糸口金と凝固浴液面との間の距
離は5mmに設定し、凝固液面から集束ガイドまでの距
離は400mmとした。Wet spinning and dry/wet spinning were performed using these spinning stock solutions, respectively. As the coagulation bath, a 20'C155% DMSO aqueous solution was used in all methods. Also,
In the case of dry/wet spinning, the distance between the spinneret and the coagulation bath liquid level was set to 5 mm, and the distance from the coagulation liquid level to the focusing guide was 400 mm.
得られた未延伸l11m糸条は熱水中で5倍に延伸した
後、水洗し、油剤を付与し、180〜200°Cの乾熱
チューブ中で最高延伸倍率の90%で二次延伸し、第1
表に示すアクリル光来フィブリル化繊維を得た。The obtained undrawn 11m yarn was stretched 5 times in hot water, washed with water, applied with an oil agent, and subjected to secondary stretching at 90% of the maximum stretching ratio in a dry heat tube at 180 to 200°C. , 1st
The acrylic fibrillated fibers shown in the table were obtained.
第1表に示したアクリル光来フィブリル化繊維を繊維長
5mmにカットし、このカット繊維20C1を約101
の水に分散させ、次いでクリアランスQ、immに設定
したシングルディスクリファイナ−を通してフィブリル
化した。The acrylic optical fibrillated fibers shown in Table 1 were cut to a fiber length of 5 mm, and the cut fibers 20C1 were approximately 10 cm long.
of water, and then fibrillated through a single disc refiner set at clearance Q, imm.
得られたアクリル系フィブリル化繊維の繊維長は、フィ
ブリル化前のアクリル系繊維のta紺長にもよるが、約
0.1〜5mmの範囲に分布していた。また、P水石は
第1表に示すような結果を得た。次に、アクリル系フィ
ブリル化繊維を含むセメントスラリーの;戸水石および
セメント透過率を測定し、当該アクリル系フィブリル化
繊維の抄造性を評価した。これらのアクリル系フィブリ
ル化繊維を用いたセメントスラリーの一過速度とセメン
ト透過率の測定結果を第1表に示した。The fiber lengths of the obtained acrylic fibrillated fibers ranged from about 0.1 to 5 mm, depending on the length of the acrylic fibers before fibrillation. In addition, the results shown in Table 1 were obtained for P-suiseki. Next, the tomizu stone and cement permeability of the cement slurry containing the acrylic fibrillated fibers were measured to evaluate the paper formability of the acrylic fibrillated fibers. Table 1 shows the measurement results of the transit velocity and cement permeability of cement slurry using these acrylic fibrillated fibers.
次に、第1表のアクリル光来フィブリル化繊維おJ:び
アクリル系フィブリル化繊維それぞれ10Cl、Ca(
OH)210g、Al1 (SO4)310CIを水1
01に添加し、攪拌した後、ポルトランドセメント46
0Clを加え、再度攪拌した。続いて、低速攪拌下でア
ニオン性ポリアクリルアミド系高分子凝集剤2oopp
mを添加した。得られたセメントスラリーを50メツシ
ユの金網を敷いた20cmx25cmの金型内に移して
)濾過した後、100KQ/cm2の圧力で1分間プレ
スして厚さ約5mmのセメント板を成形した。次に、2
0°C1100%RHで1日間、続いて20℃水中で第
1表
6日間養生を行った後、セメント板から試験片を切出し
、湿潤状態で曲げ強度を測定した。その結果を第1表に
示した。Next, 10Cl, Ca(
OH) 210g, Al1 (SO4) 310CI in water 1
After adding to 01 and stirring, Portland cement 46
0Cl was added and stirred again. Subsequently, anionic polyacrylamide polymer flocculant 2oopp was added under low speed stirring.
m was added. The obtained cement slurry was transferred into a 20 cm x 25 cm mold lined with a 50 mesh wire mesh, filtered, and then pressed at a pressure of 100 KQ/cm2 for 1 minute to form a cement board with a thickness of about 5 mm. Next, 2
After curing for 1 day at 0°C and 1100% RH, and then for 6 days as shown in Table 1 in water at 20°C, test pieces were cut from the cement board and the bending strength was measured in a wet state. The results are shown in Table 1.
本発明の高重合度アクリル系ポリマから乾・湿式紡糸に
よって作成した高強力のアクリル系繊維から得られたフ
ィブリル化繊維は、;戸水石が小さく、フィブリル化が
良好であり、セメントスラリーの濾過速度およびセメン
ト透過率の小さい抄造性に優れたものであった。さらに
、本発明のセメント板は曲げ強度が大きく、性能に優れ
たものであった。The fibrillated fibers obtained from high-strength acrylic fibers made from the highly polymerized acrylic polymer of the present invention by dry/wet spinning have: small tomizu stones, good fibrillation, and a high filtration rate of cement slurry. It also had low cement permeability and excellent paper formability. Furthermore, the cement board of the present invention had high bending strength and excellent performance.
実施例5および比較例4
実施例3で得られた;戸水石390ccのアクリル系フ
ィブリル化繊維(実施例5)、シ戸水石350CCの故
紙バルブ(比較例4)および補強繊維として実施例2の
アクリル未来フィブリル化繊維を用いて、実施例1と同
様にしてセメントスラリーを作成し、その;濾過速度お
よびセメント透過率を測定し、次いでセメント板を成形
した。また、水中に浸漬したセメント板を60’Cおよ
び105第2表
℃で乾燥した後の吸水率と長さ変化率を測定した。Example 5 and Comparative Example 4 Obtained in Example 3; acrylic fibrillated fibers of 390 cc of Shito Mizuseki (Example 5), waste paper valve of 350 cc of Shito Mizuseki (Comparative Example 4), and reinforcing fibers of Example 2. A cement slurry was prepared using the acrylic fibrillated fibers in the same manner as in Example 1, its filtration rate and cement permeability were measured, and then a cement board was formed. In addition, the water absorption rate and length change rate after drying the cement board immersed in water at 60'C and 105C in Table 2 were measured.
その結果を第2表に示した。The results are shown in Table 2.
第2表から、本発明のアクリル系フィブリル化繊維を使
用したセメント板は、天然バルブを使用したセメント板
に比較して曲げ強度が大きく、湿潤による寸法安定性に
優れていることが判る。From Table 2, it can be seen that the cement board using the acrylic fibrillated fibers of the present invention has greater bending strength and superior dimensional stability when wetted compared to the cement board using natural bulbs.
Claims (2)
トリルを含有し、極限粘度が2.5以上であるアクリロ
ニトリル系重合体からなり、フィブリル化前の引張強度
が10g/d以上であり、600cc以下のろ水度およ
び0.1〜10mmの平均繊維長を有するフィブリル化
されたアクリル系繊維0.5〜10重量%と未フィブリ
ル化補強繊維を5重量%以下配合してなる水硬性組成物
。(1) The hydraulic material is made of an acrylonitrile polymer containing at least 95 mol% of acrylonitrile and has an intrinsic viscosity of 2.5 or more, has a tensile strength before fibrillation of 10 g/d or more, and has a capacity of 600 cc or less. A hydraulic composition comprising 0.5 to 10% by weight of fibrillated acrylic fibers having freeness and an average fiber length of 0.1 to 10 mm and 5% by weight or less of non-fibrillated reinforcing fibers.
補強繊維が少なくとも95モル%のアクリロニトリルを
含有し、極限粘度が2.5以上であるアクリロニトリル
系重合体からなり、10g/d以上の引張強度および1
80g/d以上の引張弾性率を有するアクリル系繊維で
ある水硬性組成物。(2) In claim 1, the non-fibrillated reinforcing fibers are made of an acrylonitrile polymer containing at least 95 mol% of acrylonitrile and have an intrinsic viscosity of 2.5 or more, and have a tensile strength of 10 g/d or more. Strength and 1
A hydraulic composition that is an acrylic fiber having a tensile modulus of 80 g/d or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2487186A JPS62182141A (en) | 1986-02-06 | 1986-02-06 | Hydraulic composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2487186A JPS62182141A (en) | 1986-02-06 | 1986-02-06 | Hydraulic composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62182141A true JPS62182141A (en) | 1987-08-10 |
Family
ID=12150268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2487186A Pending JPS62182141A (en) | 1986-02-06 | 1986-02-06 | Hydraulic composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62182141A (en) |
-
1986
- 1986-02-06 JP JP2487186A patent/JPS62182141A/en active Pending
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