JP2007106959A - Polyamide resin composition - Google Patents
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- JP2007106959A JP2007106959A JP2005301757A JP2005301757A JP2007106959A JP 2007106959 A JP2007106959 A JP 2007106959A JP 2005301757 A JP2005301757 A JP 2005301757A JP 2005301757 A JP2005301757 A JP 2005301757A JP 2007106959 A JP2007106959 A JP 2007106959A
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- 239000011342 resin composition Substances 0.000 title claims abstract description 20
- 229920006122 polyamide resin Polymers 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 16
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 16
- 239000003365 glass fiber Substances 0.000 claims abstract description 15
- 229920002302 Nylon 6,6 Polymers 0.000 claims abstract description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims description 17
- 239000011521 glass Substances 0.000 abstract description 2
- 229920002647 polyamide Polymers 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 238000004898 kneading Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- MVLVMROFTAUDAG-UHFFFAOYSA-N ethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC MVLVMROFTAUDAG-UHFFFAOYSA-N 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000012756 surface treatment agent Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 description 1
- GBRBMTNGQBKBQE-UHFFFAOYSA-L copper;diiodide Chemical compound I[Cu]I GBRBMTNGQBKBQE-UHFFFAOYSA-L 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010101 extrusion blow moulding Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229940037312 stearamide Drugs 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- Reinforced Plastic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本発明は、ガラス繊維強化ポリアミド樹脂組成物の優れた機械的強度を損なうことなく、成形収縮率の異方性を低減させたポリアミド樹脂組成物に関するものである。 The present invention relates to a polyamide resin composition in which the anisotropy of molding shrinkage ratio is reduced without impairing the excellent mechanical strength of the glass fiber reinforced polyamide resin composition.
ポリアミド樹脂は、耐熱性、耐薬品性、機械的強度等に優れ、エンジニアリングプラスチックとして幅広い用途に展開がされている。また、樹脂材料の機械特性をさらに向上させるため、ガラス繊維を配合した材料が広く用いられている。 Polyamide resins are excellent in heat resistance, chemical resistance, mechanical strength, etc., and are being developed in a wide range of applications as engineering plastics. Moreover, in order to further improve the mechanical properties of the resin material, a material containing glass fiber is widely used.
しかしながら、ガラス繊維を配合することにより、成形収縮率の異方性（流動方向と直角方向）が増加するため、自動車部品などの大型の成形品での利用は制限されたものであった。 However, the compounding of glass fiber increases the anisotropy of molding shrinkage (in the direction perpendicular to the flow direction), so that its use in large molded articles such as automobile parts has been limited.
剛性を保持したまま、成形収縮率の異方性を低減させるためには、繊維状と非繊維状の強化材を併用して充填する方法が知られているが、この方法では、耐衝撃性が大きく低下するという問題があった。 In order to reduce the anisotropy of molding shrinkage while maintaining rigidity, a method of filling with a combination of fibrous and non-fibrous reinforcement materials is known. There has been a problem of a significant drop.
一方、ガラス強化ポリアミド樹脂にポリテトラフルオロエチレン樹脂を配合した樹脂組成物が特許文献１などで提案されているが、この文献には成形収縮の異方性改良については言及されていない。
本発明は、上記の問題を解決し、ガラス繊維強化ポリアミド樹脂組成物の優れた機械的強度を損なうことなく、成形収縮率の異方性を低減したポリアミド系樹脂組成物を提供することを技術的な課題とするものである。
The present invention provides a polyamide-based resin composition that solves the above-described problems and reduces anisotropy of molding shrinkage without impairing the excellent mechanical strength of the glass fiber-reinforced polyamide resin composition. This is a typical issue.
本発明者らは、上記の課題を解決するために鋭意検討した結果、ポリアミド樹脂とガラス繊維とポリテトラフルオロエチレンとを用いることにより、組成物の優れた機械的強度を損なうことなく、成形収縮率の異方性を低減した組成物が得られることを見出して本発明に到達した。
すなわち、本発明は、ナイロン６６樹脂（Ａ）６０〜９０質量％、ポリテトラフルオロエチレン樹脂（Ｂ）４０〜１０質量％、及び前記（Ａ）成分と（Ｂ）成分の合計量６０〜９５質量％に対して４０〜５質量％のガラス繊維（Ｃ）からなる、機械的強度及び成形収縮率の異方性に優れたポリアミド系樹脂組成物を要旨とするものである。
As a result of intensive studies to solve the above-mentioned problems, the present inventors have made use of a polyamide resin, glass fiber, and polytetrafluoroethylene, thereby reducing molding shrinkage without impairing the excellent mechanical strength of the composition. It has been found that a composition with reduced rate anisotropy can be obtained and has reached the present invention.
That is, the present invention relates to nylon 66 resin (A) 60 to 90% by mass, polytetrafluoroethylene resin (B) 40 to 10% by mass, and the total amount of component (A) and component (B) 60 to 95% by mass. A polyamide-based resin composition having 40 to 5% by mass of glass fiber (C) and excellent anisotropy in mechanical strength and molding shrinkage is used.
本発明のポリアミド系樹脂組成物は、ナイロン６６樹脂とガラス繊維の混合物に、さらにポリテトラフルオロエチレン樹脂を配合することにより、機械的強度を損なうことなく、成形収縮率の異方性を低減できたものであり、この組成物は自動車部品などの大型の成形品に利用できるので、産業上の利用価値は極めて高い。 The polyamide resin composition of the present invention can reduce the anisotropy of the molding shrinkage without impairing the mechanical strength by further blending a polytetrafluoroethylene resin with a mixture of nylon 66 resin and glass fiber. Since this composition can be used for large molded articles such as automobile parts, the industrial utility value is extremely high.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明のポリアミド系樹脂組成物は、ナイロン６６樹脂（Ａ）、ポリテトラフルオロエチレン樹脂（Ｂ）及びガラス繊維（Ｃ）で主として構成されている。 The polyamide resin composition of the present invention is mainly composed of nylon 66 resin (A), polytetrafluoroethylene resin (B) and glass fiber (C).
まず、本発明において用いられるナイロン６６樹脂（Ａ）としては、ナイロン６６ホモポリマー及びナイロン６６を主体とする周知の方法で得られるコポリマーが使用される。ポリアミド樹脂の重合度には特に限定されるものではないが、９８％濃硫酸にポリアミド樹脂を１質量％の割合で溶解した溶液の２５℃で測定した相対粘度として、１．５〜５．０の範囲、特に２．０〜４．０の範囲のものを用いることが好ましい。 First, as the nylon 66 resin (A) used in the present invention, a nylon 66 homopolymer and a copolymer obtained by a known method mainly composed of nylon 66 are used. The degree of polymerization of the polyamide resin is not particularly limited, but the relative viscosity measured at 25 ° C. of a solution obtained by dissolving the polyamide resin in 98% concentrated sulfuric acid at a ratio of 1% by mass is 1.5 to 5.0. It is preferable to use those in the range of 2.0 to 4.0.
また、ポリテトラフルオロエチレン樹脂（Ｂ）としては、数平均分子量１０，０００〜１０，０００，０００、平均粒径５〜３２μｍのものが好ましく、例えば、三幸ファインマテリアル（株）製の「エースフロンＳ（商品名）」が使用される。 The polytetrafluoroethylene resin (B) preferably has a number average molecular weight of 10,000 to 10,000,000 and an average particle size of 5 to 32 μm. For example, “ACEFLON” manufactured by Sanko Fine Material Co., Ltd. S (product name) "is used.
ポリテトラフルオロエチレン樹脂（Ｂ）の配合量は、ナイロン６６樹脂（Ａ）６０〜９０質量％に対して４０〜１０質量％であり、（Ｂ）成分が１０質量％未満では成形収縮率の異方性の改良効果に乏しく、４０質量％を超えると機械的強度が低下するため好ましくない。 The blending amount of the polytetrafluoroethylene resin (B) is 40 to 10% by mass with respect to 60 to 90% by mass of the nylon 66 resin (A). When the component (B) is less than 10% by mass, the molding shrinkage ratio is different. The effect of improving the isotropic property is poor, and if it exceeds 40% by mass, the mechanical strength decreases, which is not preferable.
次に、本発明で使用するガラス繊維（Ｃ）は、特に限定されるものではないが、溶融混練前のもので、その平均直径が３〜１５μｍの範囲にあり、アスペクト比（平均長さ／平均直径）が２５０〜５００の範囲にあるものが好ましい。アスペクト比が２５０未満のものでは、成形品としたときの機械的強度が十分でない場合があり、一方、アスペクト比が５００を超えると、成形性が低下しやすい。また、溶融混練前のガラス繊維の平均長さは、前記したアスペクト比を満足するものなら特に制限はないが、通常は０．７５〜５．５ｍｍの範囲にあるものが好ましい。 Next, the glass fiber (C) used in the present invention is not particularly limited, but is before melt-kneading, the average diameter thereof is in the range of 3 to 15 μm, and the aspect ratio (average length / Those having an average diameter in the range of 250 to 500 are preferred. When the aspect ratio is less than 250, the mechanical strength when formed into a molded product may not be sufficient. On the other hand, when the aspect ratio exceeds 500, the moldability tends to decrease. Moreover, the average length of the glass fiber before melt kneading is not particularly limited as long as it satisfies the above aspect ratio, but is preferably in the range of 0.75 to 5.5 mm.
ガラス繊維（Ｃ）の配合量は、前記（Ａ）成分と（Ｂ）成分の合計量６０〜９５質量％に対して４０〜５質量％であることが必要であり、５質量％未満では強化材としての補強効果に乏しく、４０質量％を超えると加工性が悪化する。 The compounding amount of the glass fiber (C) needs to be 40 to 5% by mass with respect to the total amount of 60 to 95% by mass of the component (A) and the component (B). The reinforcing effect as a material is poor, and if it exceeds 40% by mass, the workability deteriorates.
なお、ガラス繊維（Ｃ）は、表面処理剤として、高級脂肪酸又はそのエステル、塩等の誘導体（例えば、ステアリン酸、オレイン酸、パルミチン酸、ステアリン酸マグネシウム、ステアリン酸カルシウム、ステアリン酸アルミニウム、ステアリン酸アミド、ステアリン酸エチルエステル等）やカップリング剤（例えば、シラン系、チタネート系、アルミニウム系、ジルコニウム系等）を用いて処理することができる。表面処理剤はあらかじめ各々の無機フィラーと処理しておいてもよく、乾式撹拌時に同時に添加処理することも可能である。 Glass fiber (C) is used as a surface treatment agent and derivatives thereof such as higher fatty acids or their esters and salts (for example, stearic acid, oleic acid, palmitic acid, magnesium stearate, calcium stearate, aluminum stearate, stearamide). , Stearic acid ethyl ester, etc.) and a coupling agent (for example, silane, titanate, aluminum, zirconium, etc.). The surface treatment agent may be previously treated with each inorganic filler, and can be added at the same time during dry stirring.
本発明のポリアミド系樹脂組成物には、本発明の目的を損なわない範囲で、他の成分、例えば顔料、染料等の着色剤や、ポリアミド樹脂の一般的な熱安定剤である銅系熱安定剤（例えばヨウ化銅、酢酸銅等とヨウ化カリウム、臭化カルウムとの併用）、ヒンダードフェノール系酸化劣化防止剤に代表される有機系耐熱剤、耐候性改良剤、核剤、可塑剤、滑剤、帯電防止剤等の添加剤、充填材、他の樹脂ポリマー等を添加することができる。 In the polyamide-based resin composition of the present invention, other components such as colorants such as pigments and dyes, and copper-based heat stabilizers that are general heat stabilizers for polyamide resins are included within the scope of the present invention. Agents (for example, combined use of copper iodide, copper acetate, etc. with potassium iodide and carium bromide), organic heat-resistant agents represented by hindered phenol-based oxidative degradation inhibitors, weather resistance improvers, nucleating agents, plasticizers Additives such as lubricants and antistatic agents, fillers, other resin polymers, and the like can be added.
本発明のポリアミド系樹脂組成物は、機械的強度及び成形収縮率の異方性に優れたものであるが、機械的強度として例えば引張強度は９０ＭＰａ以上、曲げ強度は１４０ＭＰａ以上、曲げ弾性率は４．５ＧＰａ以上、衝撃強度は４０Ｊ／ｍ以上が好ましい。また、成形収縮率の異方性としては、流れ方向と直角方向の比が０．４以上が好ましい。
上記のポリアミド系樹脂組成物は、射出成形、押出成形、ブロー成形等、幅広い方法で成形することが可能であり、特に射出成形用途が最適である。また、得られる成形品は、その特性を生かして自動車用部品や家電製品等に幅広く使用することができる。
なお、本発明のポリアミド系樹脂組成物の製造方法は、特に限定されるものではなく、ポリアミド樹脂、ポリテトラフルオロエチレン樹脂及びガラス繊維を、常用の単軸又は２軸の押出機やニーダー等の混練機を用いて、溶融混練する方法等を用いることができる。
The polyamide-based resin composition of the present invention is excellent in anisotropy of mechanical strength and molding shrinkage, but as mechanical strength, for example, tensile strength is 90 MPa or more, bending strength is 140 MPa or more, bending elastic modulus is 4.5 GPa or more, and impact strength is preferably 40 J / m or more. Further, as the anisotropy of the mold shrinkage rate, the ratio of the flow direction and the direction perpendicular to the flow direction is preferably 0.4 or more.
The polyamide-based resin composition can be molded by a wide range of methods such as injection molding, extrusion molding, and blow molding, and is particularly suitable for injection molding applications. Further, the obtained molded product can be widely used for automobile parts, home appliances and the like by making use of the characteristics.
In addition, the manufacturing method of the polyamide-type resin composition of this invention is not specifically limited, A polyamide resin, a polytetrafluoroethylene resin, and a glass fiber are used for a usual single axis or a biaxial extruder, a kneader, etc. A melt kneading method using a kneader can be used.
次に、本発明を実施例により具体的に説明するが、本発明は実施例のみに限定されるものではない。なお、実施例で用いた原料、及び物性試験の測定法は次の通りである。
１．原料
（１）ポリアミド６６樹脂（以下、ＰＡ６６とする。）：デュポン社製101NC010（相対粘度2.7）
（２）ポリテトラフルオロエチレン樹脂：三幸ファインマテリアル（株）製エースフロンＳ（以下、ＰＴＦＥとする。）
（３）ガラス繊維：日本電気ガラス社製T-289（以下、ＧＦとする。）
２．測定法
（１）引張強度：ＡＳＴＭ Ｄ６３８に準じて測定した。
（２）曲げ強度及び曲げ弾性率：ＡＳＴＭ Ｄ７９０に準じて測定した。
（３）衝撃強度：ＡＳＴＭ Ｄ２５６に準じて測定した。
（４）成形収縮率
射出成形機（東芝機械（株）製ＩＳ８０ＥＰＮ、シリンダー温度２８０℃、成形サイクル、金型温度８０℃）で６０×６０×３ｍｍの試験片を成形し、２３℃で２４時間放置後、成形収縮率を測定した。
（実施例１）
７５質量部のＰＡ６６を１０質量部のＰＴＦＥとともにクボタ社製連続定流供給装置を用いて、サイドフィーダー付同方向２軸押出機（東芝機械社製TEM‐37BS）の主供給口に供給した。また、サイドフィーダーより１５質量部ＧＦを供給した。樹脂温度２８０℃、吐出量１４kg／時で溶融混練を行い、ノズルからストランド状に引取った樹脂組成物を水浴にくぐらせて冷却固化し、ペレタイザーでカッティングした後、１００℃で１２時間熱風乾燥することによって樹脂組成物のペレットを得た。
EXAMPLES Next, although an Example demonstrates this invention concretely, this invention is not limited only to an Example. In addition, the raw material used in the Example and the measuring method of a physical property test are as follows.
1. Raw material (1) Polyamide 66 resin (hereinafter referred to as PA66): 101NC010 manufactured by DuPont (relative viscosity 2.7)
(2) Polytetrafluoroethylene resin: Ace Flon S manufactured by Sanko Fine Material Co., Ltd. (hereinafter referred to as PTFE)
(3) Glass fiber: Nippon Electric Glass Co., Ltd. T-289 (hereinafter referred to as GF)
2. Measurement method (1) Tensile strength: Measured according to ASTM D638.
(2) Flexural strength and flexural modulus: measured according to ASTM D790.
(3) Impact strength: Measured according to ASTM D256.
(4) Molding Shrinkage A test piece of 60 × 60 × 3 mm was molded with an injection molding machine (IS80EPN manufactured by Toshiba Machine Co., Ltd., cylinder temperature 280 ° C., molding cycle, mold temperature 80 ° C.), and then at 23 ° C. for 24 hours. After standing, the molding shrinkage was measured.
Example 1
75 parts by mass of PA66 and 10 parts by mass of PTFE were supplied to the main supply port of a unidirectional twin-screw extruder with a side feeder (TEM-37BS manufactured by Toshiba Machine Co., Ltd.) using a continuous constant-current supply device manufactured by Kubota. Moreover, 15 mass parts GF was supplied from the side feeder. Melt-kneading is performed at a resin temperature of 280 ° C. and a discharge rate of 14 kg / hour, the resin composition taken in a strand form from a nozzle is passed through a water bath, cooled and solidified, cut with a pelletizer, and then dried with hot air at 100 ° C. for 12 hours. As a result, pellets of the resin composition were obtained.
次いで、得られた樹脂組成物ペレットを、射出成形機（東芝機械社製IS80ＥＰＮ）を用いて樹脂温度２８０℃で成形し、各種試験片を作製した。これらについて機械的物性、成形収縮率を評価した。
（実施例２〜４、比較例１〜３）
ＰＡ６６、ＰＴＦＥ及びＧＦの配合割合を表１に示す割合に変更した以外は、実施例１と同様にしてペレットを得て、諸特性を調べた。
Next, the obtained resin composition pellets were molded at a resin temperature of 280 ° C. using an injection molding machine (IS80EPN manufactured by Toshiba Machine Co., Ltd.) to prepare various test pieces. These were evaluated for mechanical properties and molding shrinkage.
(Examples 2-4, Comparative Examples 1-3)
Except that the blending ratio of PA66, PTFE and GF was changed to the ratio shown in Table 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined.
実施例１〜４及び比較例１〜３で得られた試験片の評価結果を表１に示す。
Table 1 shows the evaluation results of the test pieces obtained in Examples 1 to 4 and Comparative Examples 1 to 3.
一方、比較例１〜２は、ＰＴＦＥを用いなかったため、成形収縮の異方性が大きかった。また、比較例３は、ＰＴＦＥの配合量が本発明の範囲を上回っていたため、機械的強度が不十分であった。
On the other hand, Comparative Examples 1 and 2 did not use PTFE, so the anisotropy of molding shrinkage was large. Moreover, since the compounding quantity of PTFE exceeded the range of this invention in the comparative example 3, mechanical strength was inadequate.
Claims (1)
ナイロン６６樹脂（Ａ）６０〜９０質量％、ポリテトラフルオロエチレン樹脂（Ｂ）４０〜１０質量％、及び前記（Ａ）成分と（Ｂ）成分の合計量６０〜９５質量％に対して４０〜５質量％のガラス繊維（Ｃ）からなる、機械的強度及び成形収縮率の異方性に優れたポリアミド樹脂組成物。
60 to 90% by mass of nylon 66 resin (A), 40 to 10% by mass of polytetrafluoroethylene resin (B), and 40 to 40% with respect to 60 to 95% by mass of the total amount of component (A) and component (B). A polyamide resin composition comprising 5% by mass of glass fiber (C) and excellent in mechanical strength and anisotropy of molding shrinkage.
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|---|---|---|---|
| JP2005301757A JP2007106959A (en) | 2005-10-17 | 2005-10-17 | Polyamide resin composition |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2005301757A JP2007106959A (en) | 2005-10-17 | 2005-10-17 | Polyamide resin composition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724907A (en) * | 2014-01-22 | 2014-04-16 | 苏州新区特氟龙塑料制品厂 | Teflon flame retardant engineering plastic |
| CN104046018A (en) * | 2014-06-20 | 2014-09-17 | 浙江衢州万能达科技有限公司 | Polyhexamethylene adipamide composition |
| CN105694445A (en) * | 2016-02-04 | 2016-06-22 | 广东奇德新材料股份有限公司 | Preparation method of wear-resisting PA66 composite material |
| CN105694446A (en) * | 2016-02-04 | 2016-06-22 | 广东奇德新材料股份有限公司 | Abrasion-resistant PA66 composite material |
-
2005
- 2005-10-17 JP JP2005301757A patent/JP2007106959A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724907A (en) * | 2014-01-22 | 2014-04-16 | 苏州新区特氟龙塑料制品厂 | Teflon flame retardant engineering plastic |
| CN104046018A (en) * | 2014-06-20 | 2014-09-17 | 浙江衢州万能达科技有限公司 | Polyhexamethylene adipamide composition |
| CN105694445A (en) * | 2016-02-04 | 2016-06-22 | 广东奇德新材料股份有限公司 | Preparation method of wear-resisting PA66 composite material |
| CN105694446A (en) * | 2016-02-04 | 2016-06-22 | 广东奇德新材料股份有限公司 | Abrasion-resistant PA66 composite material |
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