JP4952192B2 - Thermosetting resin molding material - Google Patents
Thermosetting resin molding material Download PDFInfo
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- JP4952192B2 JP4952192B2 JP2006292514A JP2006292514A JP4952192B2 JP 4952192 B2 JP4952192 B2 JP 4952192B2 JP 2006292514 A JP2006292514 A JP 2006292514A JP 2006292514 A JP2006292514 A JP 2006292514A JP 4952192 B2 JP4952192 B2 JP 4952192B2
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- resin molding
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- 239000012778 molding material Substances 0.000 title claims description 47
- 229920005989 resin Polymers 0.000 title claims description 42
- 239000011347 resin Substances 0.000 title claims description 42
- 229920001187 thermosetting polymer Polymers 0.000 title claims description 41
- 229920002748 Basalt fiber Polymers 0.000 claims description 39
- 239000003365 glass fiber Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000005011 phenolic resin Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 239000011256 inorganic filler Substances 0.000 claims description 7
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 239000012766 organic filler Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004641 Diallyl-phthalate Substances 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 229910052570 clay Inorganic materials 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 3
- 239000010456 wollastonite Substances 0.000 claims description 3
- 229910052882 wollastonite Inorganic materials 0.000 claims description 3
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 11
- 238000004898 kneading Methods 0.000 description 8
- 229920003986 novolac Polymers 0.000 description 8
- 239000004312 hexamethylene tetramine Substances 0.000 description 7
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 7
- 229920000459 Nitrile rubber Polymers 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 235000011116 calcium hydroxide Nutrition 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229930003836 cresol Natural products 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- MZZSDCJQCLYLLL-UHFFFAOYSA-N Secalonsaeure A Natural products COC(=O)C12OC3C(CC1=C(O)CC(C)C2O)C(=CC=C3c4ccc(O)c5C(=O)C6=C(O)CC(C)C(O)C6(Oc45)C(=O)OC)O MZZSDCJQCLYLLL-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- -1 curing aids Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000013003 hot bending Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 239000010680 novolac-type phenolic resin Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 238000005464 sample preparation method Methods 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は、熱硬化性樹脂成形材料に関するものである。 The present invention relates to a thermosetting resin molding material.
熱硬化性樹脂成形材料は成形性に優れ、成形品の機械的強度、耐熱性、寸法安定性にも優れるため、自動車、電気、電子等の基幹産業分野で長期に渡り使用されてきた。特に最近では、金属部品をガラス繊維で強化した高強度の熱硬化性樹脂成形品に置換することで、大幅なコストダウンが可能となることから、積極的に金属部品からの代替検討が行われている。
しかしながら近年、熱硬化性樹脂成形材料に対する要求レベルは益々高度化しており、特に高温雰囲気下で使用される場合、従来のガラス繊維入り熱硬化性樹脂成形材料によって得られる成形品では剛性に関して不充分であることがあった。
熱硬化性樹脂成形材料によって得られる成形品の高熱時における剛性を向上させる方法については種々検討されてきた（例えば、特許文献１参照）が、更なる向上が望まれている。
Thermosetting resin molding materials are excellent in moldability and excellent in mechanical strength, heat resistance, and dimensional stability of molded products, and thus have been used for a long time in basic industries such as automobiles, electricity, and electronics. In recent years, replacement of metal parts with metal parts has been actively conducted, since replacement of metal parts with high-strength thermosetting resin moldings reinforced with glass fibers can significantly reduce costs. ing.
However, in recent years, the required level for thermosetting resin molding materials has become more and more sophisticated. Especially when used in high-temperature atmospheres, the molded products obtained by conventional thermosetting resin molding materials containing glass fibers are insufficient in terms of rigidity. It was sometimes.
Various methods for improving the rigidity of a molded product obtained from a thermosetting resin molding material at high temperatures have been studied (for example, see Patent Document 1), but further improvement is desired.
本発明は、従来のガラス繊維入り熱硬化性樹脂成形材料と比較して、成形性を実用的なレベルに維持しつつ、高熱時における剛性に優れた成形品を得ることができる熱硬化性樹脂成形材料を提供することである。 The present invention is a thermosetting resin capable of obtaining a molded article having excellent rigidity at high temperatures while maintaining the moldability at a practical level as compared with a conventional thermosetting resin-molded material containing glass fibers. It is to provide a molding material.
このような目的は、下記の本発明（１）〜（６）によって達成される。
（１）フェノール樹脂、エポキシ樹脂、ジアリルフタレート樹脂及び不飽和ポリエステル樹脂の中から選ばれる１種以上の熱硬化性樹脂と、アミノシランで表面処理したバサルト繊維とを含有しており、
前記バサルト繊維の平均繊維長は、１．５ｍｍ以上４．０ｍｍ以下であり、
前記バサルト繊維の平均繊維径は、５μｍ以上２０μｍ以下であることを特徴とする熱硬化性樹脂成形材料。
（２）前記バサルト繊維の含有量は熱硬化性樹脂成形材料全体に対して１０重量％以上７５重量％以下である（１）に記載の熱硬化性樹脂成形材料。
（３）更に、前記バサルト繊維以外の充填材を含有するものである（１）又は（２）のいずれかに記載の熱硬化性樹脂成形材料。
（４）前記充填材と、前記バサルト繊維との合計含有量は、熱硬化性樹脂成形材料全体に対し、３０重量％以上７５重量％以下である（３）に記載の熱硬化性樹脂成形材料。
（５）前記充填材は無機充填材及び／又は有機充填材を含むものである（３）又は（４）に記載の熱硬化性樹脂成形材料。
（６）前記無機充填材は、ガラス繊維、炭酸カルシウム、クレー、シリカ、マイカ、タルク、ワラストナイト、ガラスビーズの中から選ばれる１種類以上を含むものである（５）に記載の熱硬化性樹脂成形材料。
Such an object is achieved by the following present inventions (1) to ( 6 ).
(1) contains one or more thermosetting resins selected from phenol resin, epoxy resin, diallyl phthalate resin and unsaturated polyester resin, and basalt fiber surface-treated with aminosilane ,
The average fiber length of the basalt fiber is 1.5 mm or more and 4.0 mm or less,
An average fiber diameter of the basalt fiber is not less than 5 μm and not more than 20 μm .
(2) The thermosetting resin molding material according to (1), wherein the content of the basalt fiber is 10% by weight or more and 75% by weight or less with respect to the entire thermosetting resin molding material.
(3) In addition, those which contain a filler other than the basalt fiber (1) or a thermosetting resin molding material according to any one of (2).
( 4 ) The thermosetting resin molding material according to ( 3 ), wherein the total content of the filler and the basalt fiber is 30% by weight or more and 75% by weight or less with respect to the entire thermosetting resin molding material. .
( 5 ) The thermosetting resin molding material according to ( 3 ) or ( 4 ), wherein the filler includes an inorganic filler and / or an organic filler.
( 6 ) The thermosetting resin according to ( 5 ), wherein the inorganic filler includes one or more selected from glass fiber, calcium carbonate, clay, silica, mica, talc, wollastonite, and glass beads. Molding material.
本発明は、熱硬化性樹脂と、バサルト繊維とを含有することを特徴とするものであり、従来のガラス繊維入り熱硬化性樹脂と比較し、成形性を実用的なレベルに維持しつつ、高熱時の剛性に優れた成形品を得ることができる熱硬化性樹脂成形材料を提供するものである。 The present invention is characterized by containing a thermosetting resin and a basalt fiber, while maintaining moldability at a practical level as compared with a conventional thermosetting resin containing glass fibers, It is an object of the present invention to provide a thermosetting resin molding material capable of obtaining a molded product excellent in rigidity at high heat.
以下、本発明の熱硬化性樹脂成形材料（以下、「成形材料」ということがある）について説明する。
本発明の成形材料は、熱硬化性樹脂と、バサルト繊維とを含有することを特徴とする。
Hereinafter, the thermosetting resin molding material of the present invention (hereinafter sometimes referred to as “molding material”) will be described.
The molding material of the present invention is characterized by containing a thermosetting resin and a basalt fiber.
本発明において用いられる熱硬化性樹脂は、フェノール樹脂、エポキシ樹脂、ジアリルフタレート樹脂及び不飽和ポリエステル樹脂の中から選ばれたものを１種以上含むものであることが好ましい。この中でもフェノール樹脂が幅広い用途に用いることができる点から好ましい。 The thermosetting resin used in the present invention preferably contains at least one selected from phenol resins, epoxy resins, diallyl phthalate resins and unsaturated polyester resins. Among these, a phenol resin is preferable because it can be used for a wide range of applications.
上記フェノール樹脂としては、ノボラック型フェノール樹脂またはレゾール型フェノール樹脂を挙げることができ、これらを単独、あるいは両者を併用することができる。 As said phenol resin, a novolak-type phenol resin or a resol type phenol resin can be mentioned, These can be used individually or together.
ノボラック型フェノール樹脂を使用する場合、通常、硬化剤としてヘキサメチレンテトラミンを使用する。ヘキサメチレンテトラミンを用いる場合、その含有量は特に限定されないが、ノボラック型フェノール樹脂１００重量部に対して、１０〜３０重量部を含有することが好ましく、更に１５〜２０重量部含有することが好ましい。ヘキサメチレンテトラミンの含有量を上記範囲とすることで、成形品の機械的強度及び成形収縮量を良好なものとすることができる。 When a novolac type phenol resin is used, hexamethylenetetramine is usually used as a curing agent. When hexamethylenetetramine is used, its content is not particularly limited, but it is preferably 10 to 30 parts by weight, more preferably 15 to 20 parts by weight, with respect to 100 parts by weight of the novolak type phenol resin. . By setting the content of hexamethylenetetramine in the above range, the mechanical strength and molding shrinkage of the molded product can be improved.
本発明の成形材料は、バサルト繊維を含有することを特徴とする。
バサルト繊維は、玄武岩を高温で溶融紡糸された非晶性の人造鉱物繊維であり、優れた耐熱性を有すると共に、耐湿性、耐薬品性、高絶縁性、防音性等にも優れている。
上記バサルト繊維の含有量は、熱硬化性樹脂成形材料全体に対して１０重量％以上７５重量％以下であることが好ましい。更に好ましくは２０重量％以上７０重量％以下である。特に好ましくは３０重量％以上６５重量％以下である。バサルト繊維の含有量を上記範囲とすることで、特に熱時の剛性を向上させることができる。
The molding material of the present invention is characterized by containing a basalt fiber.
The basalt fiber is an amorphous artificial mineral fiber obtained by melt spinning basalt at a high temperature, and has excellent heat resistance, and is excellent in moisture resistance, chemical resistance, high insulation, soundproofing and the like.
The content of the basalt fiber is preferably 10% by weight to 75% by weight with respect to the entire thermosetting resin molding material. More preferably, it is 20 to 70 weight%. Especially preferably, it is 30 to 65 weight%. By setting the content of the basalt fiber in the above range, it is possible to particularly improve the rigidity during heating.
上記バサルト繊維の平均繊維長は、１．５ｍｍ以上４．０ｍｍ以下である。バサルト繊維の平均繊維長を上記範囲とすることで、熱時の剛性を向上させる効果を更に高めることができる。
The average fiber length of the basalt fiber is 1 . It is 5 mm or more and 4.0 mm or less. By setting the average fiber length of the basalt fiber in the above range, the effect of improving the rigidity during heating can be further enhanced.
上記バサルト繊維の平均繊維径は、５μｍ以上２０μｍ以下であることが好ましい。更に好ましくは７μｍ以上１７μｍ以下である。バサルト繊維の平均繊維径を上記範囲とすることで、熱時の剛性を向上させる効果を更に高めることができる。 The average fiber diameter of the basalt fiber is preferably 5 μm or more and 20 μm or less. More preferably, they are 7 micrometers or more and 17 micrometers or less. By making the average fiber diameter of the basalt fiber within the above range, the effect of improving the rigidity during heating can be further enhanced.
上記バサルト繊維は、表面処理を施して用いることができる。例えば、アミノシランを用いることができる。アミノシランで表面処理をすることにより、用いられる熱硬化性樹脂との密着性を向上させることができる。 The basalt fiber can be used after being subjected to a surface treatment. For example, aminosilane can be used. By performing the surface treatment with aminosilane, the adhesion with the thermosetting resin used can be improved.
本発明の成形材料は、更に、上記バサルト繊維以外の充填材を含有することができる。
また、上記充填材は無機充填材及び／又は有機充填材を含むことが好ましい。
The molding material of the present invention can further contain a filler other than the basalt fiber.
Moreover, it is preferable that the said filler contains an inorganic filler and / or an organic filler.
上記無機充填材は、ガラス繊維、炭酸カルシウム、クレー、シリカ、マイカ、タルク、ワラストナイト、ガラスビーズの中から選ばれたものを１種類以上含むものであることが好ましい。これらの中でもガラス繊維が成形品の機械的強度を向上させる効果が高いことから好ましく用いることができる。 The inorganic filler preferably contains at least one selected from glass fiber, calcium carbonate, clay, silica, mica, talc, wollastonite, and glass beads. Among these, glass fiber can be preferably used because it has a high effect of improving the mechanical strength of the molded product.
上記有機充填材は、例えば、ポリビニールブチラール、アクリロニトリルブタジエンゴム、デニム、木粉等を用いることができる。これらの中でもアクリロニトリルブタジエンゴムが成形品の靭性を向上させる効果が高まることから好ましく用いることができる。 Examples of the organic filler that can be used include polyvinyl butyral, acrylonitrile butadiene rubber, denim, and wood powder. Among these, acrylonitrile butadiene rubber can be preferably used because it increases the effect of improving the toughness of the molded product.
上記充填材の含有量は特に限定されず、適宜用途によって決定することができる。好ましくは充填材と、バサルト繊維との合計含有量で、熱硬化性樹脂成形材料全体に対して、３０重量％以上７５重量％以下、好ましくは３０重量％以上７０重量％以下、さらに好ましくは３０重量％以上６５重量％以下である。 Content of the said filler is not specifically limited, It can determine suitably by a use. Preferably, the total content of the filler and the basalt fiber is 30% by weight or more and 75% by weight or less, preferably 30% by weight or more and 70% by weight or less, more preferably 30%, based on the entire thermosetting resin molding material. % By weight to 65% by weight.
本発明の成形材料には、以上に説明した成分の他にも、本発明の目的を損なわない範囲で離型剤、硬化助剤、顔料等の添加剤を添加することができる。 In addition to the components described above, additives such as mold release agents, curing aids, and pigments can be added to the molding material of the present invention as long as the object of the present invention is not impaired.
本発明の成形材料を製造する方法は、通常の混練方法が適用できる。
例えば、熱硬化性樹脂、バサルト繊維、ガラス繊維、必要に応じて硬化助剤、顔料、離型剤を加えて混合した後、溶融混練し、冷却後粉砕して得ることができる。溶融混練は、混練ロール、コニーダ、二軸押出し機等の混練装置単独あるいは混練ロールと他の混合装置との組み合わせにより行うことができる。
A normal kneading method can be applied to the method for producing the molding material of the present invention.
For example, it can be obtained by adding a thermosetting resin, basalt fiber, glass fiber and, if necessary, a curing aid, a pigment and a release agent, mixing, melting and kneading, cooling and pulverizing. The melt kneading can be performed by a kneading apparatus such as a kneading roll, a kneader, or a twin screw extruder alone or in combination with a kneading roll and another mixing apparatus.
以下、本発明を実施例および比較例に基づいて詳細に説明するが、本発明はこれに限定されるものではない。 EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example and a comparative example, this invention is not limited to this.
実施例及び比較例の配合と特性を表１に示す。表１に示す含有量は全て重量％を表す。 Table 1 shows the composition and characteristics of Examples and Comparative Examples. All contents shown in Table 1 represent% by weight.
（表１の注）
１．原材料
（１）ノボラック型フェノール樹脂：住友ベークライト社製・「Ａ-１０８２」（数平均分子量８５０）
（２）クレゾールノボラック型エポキシ樹脂：日本化薬社製・「ＥＯＣＮ１０２０−７０」
（３）バサルト繊維：昭和高分子社製・バサルトファイバー （平均繊維径１３μｍ、平均繊維長３ｍｍ）
（４）ガラス繊維：日本板硝子社製・「ＲＥＳ０３−ＢＭ３８」（平均繊維径１１μｍ、平均繊維長３ｍｍのチョップドストランド）
（５）シリカ：Ｅｌｋｅｍ社製・「マイクロシリカ ９４０−Ｕ」
（６）有機充填材：アクリロニトリルブタジエンゴム：ＪＳＲ社製・ＰＮＣ−３８
（７）硬化助剤Ａ：秩父石灰工業社製・「消石灰」
（８）硬化助剤Ｂ：四国化成社製・キュアゾール「２Ｐ４ＭＺ」
（９）着色剤：三菱化学社製・「カーボンブラック＃７５０Ｂ」
（１０）離型剤：日本油脂社製・「ステアリン酸」
(Note to Table 1)
1. Ingredients (1) Novolac type phenolic resin: “A-1082” (number average molecular weight 850) manufactured by Sumitomo Bakelite Co., Ltd.
(2) Cresol novolac type epoxy resin: Nippon Kayaku Co., Ltd. “EOCN1020-70”
(3) Basalt fiber: Basalt fiber manufactured by Showa Polymer Co., Ltd. (average fiber diameter 13 μm, average fiber length 3 mm)
(4) Glass fiber: “RES03-BM38” manufactured by Nippon Sheet Glass Co., Ltd. (chopped strand having an average fiber diameter of 11 μm and an average fiber length of 3 mm)
(5) Silica: “Microsilica 940-U” manufactured by Elkem
(6) Organic filler: Acrylonitrile butadiene rubber: JSR Co., PNC-38
(7) Curing aid A: “Slaked lime” manufactured by Chichibu Lime Industry Co., Ltd.
(8) Curing aid B: manufactured by Shikoku Kasei Co., Ltd., Curesol “2P4MZ”
(9) Colorant: “Carbon Black # 750B” manufactured by Mitsubishi Chemical Corporation
(10) Mold release agent: “Stearic acid” manufactured by NOF Corporation
２．成形材料の作製
（実施例１）
ノボラック型フェノール樹脂３５重量％、ヘキサメチレンテトラミン６重量％、バサルト繊維１８重量％、ガラス繊維３８重量％、硬化助剤として消石灰１重量％、離型剤としてステアリン酸１重量％、顔料としてカーボンブラック１重量％を混合して組成物を調製した。
上記組成物を８０〜９０℃の混練ロールで約１５分間溶融混練し、冷却後粉砕して成形材料を得た。
2. Production of molding material (Example 1)
Novolak type phenolic resin 35% by weight, hexamethylenetetramine 6% by weight, basalt fiber 18% by weight, glass fiber 38% by weight, slaked lime 1% by weight as a curing aid, stearic acid 1% by weight, carbon black as a pigment A composition was prepared by mixing 1% by weight.
The composition was melt-kneaded with a kneading roll at 80 to 90 ° C. for about 15 minutes, cooled and pulverized to obtain a molding material.
（実施例２）
バサルト繊維を２８重量％に増量し、ガラス繊維を２８重量％に減量した以外は、実施例１と同様にして成形材料を得た。
(Example 2)
A molding material was obtained in the same manner as in Example 1 except that the basalt fiber was increased to 28% by weight and the glass fiber was decreased to 28% by weight.
（実施例３）
バサルト繊維を３８重量％に増量し、ガラス繊維を１８重量％に減量した以外は、実施例１と同様にして成形材料を得た。
(Example 3)
A molding material was obtained in the same manner as in Example 1 except that the basalt fiber was increased to 38% by weight and the glass fiber was decreased to 18% by weight.
（実施例４）
バサルト繊維を４８重量％に増量し、ガラス繊維を８重量％に減量した以外は、実施例１と同様にして成形材料を得た。
（実施例５）
バサルト繊維を５６重量％に増量し、ガラス繊維を用いなかった以外は、実施例１と同様にして成形材料を得た。
Example 4
A molding material was obtained in the same manner as in Example 1 except that the basalt fiber was increased to 48% by weight and the glass fiber was decreased to 8% by weight.
(Example 5)
A molding material was obtained in the same manner as in Example 1 except that the basalt fiber was increased to 56% by weight and no glass fiber was used.
（実施例６）
ノボラック型フェノール樹脂及びヘキサメチレンテトラミンをそれぞれ２８重量％、４重量％に減量し、バサルト繊維を６５重量％に増量した以外は、実施例５と同様にして成形材料を得た。
(Example 6)
A molding material was obtained in the same manner as in Example 5, except that the novolak type phenol resin and hexamethylenetetramine were reduced to 28 wt% and 4 wt%, respectively, and the basalt fiber was increased to 65 wt%.
（実施例７）
バサルト繊維を５２重量％に減量し、有機充填材としてアクリロニトリルブタジエンゴムを４重量％追加配合した以外は、実施例５と同様にして成形材料を得た。
(Example 7)
A molding material was obtained in the same manner as in Example 5 except that the basalt fiber was reduced to 52% by weight and 4% by weight of acrylonitrile butadiene rubber was added as an organic filler.
（実施例８）
ノボラック型フェノール樹脂を１４重量％に減量し、ヘキサメチレンテトラミンを用いず、クレゾールノボラック型エポキシ樹脂２７重量％を配合し、硬化助剤として消石灰の代わりにキュアゾールを用いた以外は、実施例５と同様にして成形材料を得た。
(Example 8)
Example 5 except that the novolak type phenolic resin was reduced to 14% by weight, hexamethylenetetramine was not used, 27% by weight of cresol novolac type epoxy resin was blended, and cure sol was used instead of slaked lime as a curing aid. A molding material was obtained in the same manner.
（比較例１）
ノボラック型フェノール樹脂３５重量％、ヘキサメチレンテトラミン６重量％、ガラス繊維５６重量％、硬化助剤として消石灰１重量％、離型剤としてステアリン酸１重量％、顔料としてカーボンブラック１重量％を混合して組成物を調製した。
上記組成物を８０〜９０℃の混練ロールで約１５分間溶融混練し、冷却後粉砕して成形材料を得た。
(Comparative Example 1)
Mixing 35% by weight of novolak-type phenolic resin, 6% by weight of hexamethylenetetramine, 56% by weight of glass fiber, 1% by weight of slaked lime as a curing aid, 1% by weight of stearic acid as a release agent, and 1% by weight of carbon black as a pigment. A composition was prepared.
The composition was melt-kneaded with a kneading roll at 80 to 90 ° C. for about 15 minutes, cooled and pulverized to obtain a molding material.
（比較例２）
ガラス繊維を２８重量％に減量、シリカを２８重量％追加配合した以外は比較例１と同様にして成形材料を得た。
(Comparative Example 2)
A molding material was obtained in the same manner as in Comparative Example 1 except that the glass fiber was reduced to 28% by weight and silica was additionally added by 28% by weight.
（比較例３）
ガラス繊維を１８重量％に減量、シリカを３８重量％に増量した以外は比較例２と同様にして成形材料を得た。
(Comparative Example 3)
A molding material was obtained in the same manner as in Comparative Example 2 except that the glass fiber was reduced to 18% by weight and the silica was increased to 38% by weight.
（比較例４）
ガラス繊維を５２重量％に減量、アクリロニトリルブタジエンゴムを４重量％追加配合した以外は、比較例１と同様にして成形材料を得た。
(Comparative Example 4)
A molding material was obtained in the same manner as in Comparative Example 1 except that the glass fiber was reduced to 52% by weight and 4% by weight of acrylonitrile butadiene rubber was added.
３．試料の作製及び評価方法
（１）曲げ強度、曲げ弾性率
トランスファー成形（金型温度１７５℃、硬化時間３分間）により試料を作製し、ＪＩＳ Ｋ ６９１１に準拠して行った。
3. Sample Preparation and Evaluation Method (1) Bending strength and flexural modulus A sample was prepared by transfer molding (mold temperature: 175 ° C., curing time: 3 minutes), and was performed according to JIS K 6911.
（２）熱時曲げ強度、曲げ弾性率
２００℃において、上記同様にして測定した。
(2) Hot bending strength and flexural modulus Measured at 200 ° C. in the same manner as described above.
（３）成形性
結果を表２に示す。
(3) Formability The results are shown in Table 2.
表２の結果から明らかなように、熱硬化性樹脂と、バサルト繊維とを含有する本発明の熱硬化性成形材料によって得られた成形品は、バサルト繊維を含まない比較例と比較して室温における曲げ強度、曲げ弾性率は同等ながら、２００℃において特に剛性の指標となる曲げ弾性率が向上していることが判明した。また、表には記載されていないが、ガラス繊維を含む従来タイプの成形材料である比較例と同等の成形性を有していた。
更に、実施例においては、熱硬化性樹脂としてノボラック型フェノール樹脂及びクレゾール型エポキシ樹脂を用いた例を示したが、バサルト繊維と同じ無機充填材であるガラス繊維が、多くの熱硬化樹脂においても機械的強度が向上することから、他の熱硬化性樹脂に本発明に用いられるバサルト繊維を含有させた場合も、上記熱時の曲げ弾性率が向上するという効果が発揮されるものと推察される。
本発明の熱硬化性樹脂成形材料によって得られる成形品の一例としては、自動車のエンジン周りの部品、ブレーキ関連部品等が挙げられる。
As is apparent from the results in Table 2, the molded product obtained by the thermosetting molding material of the present invention containing the thermosetting resin and the basalt fiber has a room temperature compared to the comparative example not containing the basalt fiber. It has been found that the bending elastic modulus, which is an index of rigidity, is improved at 200 ° C., while the bending strength and bending elastic modulus in FIG. Moreover, although not described in the table | surface, it had the moldability equivalent to the comparative example which is a conventional type molding material containing glass fiber.
Further, in the examples, an example in which a novolac type phenol resin and a cresol type epoxy resin were used as the thermosetting resin was shown. However, the glass fiber which is the same inorganic filler as the basalt fiber is also used in many thermosetting resins. Since the mechanical strength is improved, it is presumed that the effect of improving the bending elastic modulus at the time of heating is exhibited even when the basalt fiber used in the present invention is contained in another thermosetting resin. The
As an example of a molded product obtained by the thermosetting resin molding material of the present invention, there are parts around an automobile engine, brake-related parts, and the like.
Claims (6)
前記バサルト繊維の平均繊維長は、１．５ｍｍ以上４．０ｍｍ以下であり、
前記バサルト繊維の平均繊維径は、５μｍ以上２０μｍ以下であることを特徴とする熱硬化性樹脂成形材料。 Containing at least one thermosetting resin selected from phenolic resin, epoxy resin, diallyl phthalate resin and unsaturated polyester resin, and basalt fiber surface-treated with aminosilane ,
The average fiber length of the basalt fiber is 1.5 mm or more and 4.0 mm or less,
An average fiber diameter of the basalt fiber is not less than 5 μm and not more than 20 μm .
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