JPH0452301B2 - - Google Patents
Info
- Publication number
- JPH0452301B2 JPH0452301B2 JP58147795A JP14779583A JPH0452301B2 JP H0452301 B2 JPH0452301 B2 JP H0452301B2 JP 58147795 A JP58147795 A JP 58147795A JP 14779583 A JP14779583 A JP 14779583A JP H0452301 B2 JPH0452301 B2 JP H0452301B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- wollastonite
- polyetherimide
- composition
- mold
- 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.)
- Expired - Lifetime
Links
- 229920001601 polyetherimide Polymers 0.000 claims description 16
- 239000010456 wollastonite Substances 0.000 claims description 16
- 229910052882 wollastonite Inorganic materials 0.000 claims description 16
- 239000004697 Polyetherimide Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 description 16
- 229920005989 resin Polymers 0.000 description 15
- 239000011347 resin Substances 0.000 description 15
- 238000000465 moulding Methods 0.000 description 11
- -1 flame retardancy Substances 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000011342 resin composition Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012779 reinforcing material Substances 0.000 description 4
- 239000012763 reinforcing filler Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920004738 ULTEM® Polymers 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910004762 CaSiO Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920006358 Fluon Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229960000359 chromic chloride Drugs 0.000 description 1
- LJAOOBNHPFKCDR-UHFFFAOYSA-K chromium(3+) trichloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Cl-].[Cr+3] LJAOOBNHPFKCDR-UHFFFAOYSA-K 0.000 description 1
- 239000011636 chromium(III) chloride Substances 0.000 description 1
- 235000007831 chromium(III) chloride Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 125000002993 cycloalkylene group Chemical group 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は、高い耐熱性とすぐれた機械的性質お
よび低い成形収縮率と良離型性を有するポリエー
テルイミド樹脂組成物に関する。
ポリエーテルイミドは耐熱性、強度、剛性、難
燃性、耐薬品性などのすぐれたエンジニアリング
プラスチツクとして、とくに電気部品や自動車部
品などの用途において注目されている。
しかし、該用途において該樹脂の特徴である難
燃性、耐薬品性、電気的性質などを維持しなが
ら、さらに高い耐熱性、剛性度、寸法精度（低成
形収縮率）を有する材料が該分野における技術進
歩とあいまつて要求されている。
一般に、樹脂にガラス繊維や炭素繊維等の繊維
状強化材、また、タルク、炭酸カルシウム、炭酸
マグネシウム、亜硫酸カルシウム、水酸化アルミ
ニウム、マイカ、二硫化モリブデン、ウオラスト
ナイト、グラフアイト、チタン白、ガラスビーズ
などの粉末状、針状もしくは薄片状の無機充填材
等を配合することにより、耐熱性、剛性、成形収
縮率が改良されることが知られている。
ポリエーテルイミド樹脂においても、上記強化
材や充填材を配合した場合、その配合量に応じて
耐熱性、剛性の向上と成形収縮率の低下が認めら
れる。成形収縮率は該強化材や充填材の配合量が
多いほど低下し、射出成形等における型忠実度は
良好となるが、成形収縮率が低くなるに従い、射
出成形時の離型性が低下し、成形品の金型からの
取り出しが著しく困難となる。そのため、成形品
突き出し時に過大な応力が負荷され、成形品中に
歪が残留し、ストレスクラツクが発生したり、ま
た突き出し時に変形し、さらには破断を引き起す
などのトラブルが発生する。
したがつて、通常は、成形収縮率を下げ、型忠
実度が良好で寸法精度のいい樹脂組成物が大いに
必要とされているのもかかわらず、金型からの離
型性に問題の起らない程度の成形収縮率とするた
め、強化材、充填材の配合量が制限されているの
が実状である。
本発明者は上記の状況に鑑み、鋭意研究した結
果、ポリエーテルイミド樹脂にウオラストナイト
を配合し、さらに特定量のフツ素樹脂を併用する
ことによつて、耐熱性、剛性が高く、強度が良好
で低い成形収縮率と良離型性を有する組成物を得
ることが出来ることを見い出し、本発明に達し
た。
本発明はポリエーテルイミド20〜80wt％、ウ
オラストナイト10〜70wt％、フツ素樹脂0.5〜
20wt％からなることを特徴とするポリエーテル
イミド樹脂組成物である。
本発明で用いるポリエーテルイミドは一般式
The present invention relates to a polyetherimide resin composition having high heat resistance, excellent mechanical properties, low mold shrinkage and good mold release properties. Polyetherimide is attracting attention as an engineering plastic with excellent heat resistance, strength, rigidity, flame retardance, and chemical resistance, especially in applications such as electrical parts and automobile parts. However, in this field, materials with higher heat resistance, rigidity, and dimensional accuracy (low mold shrinkage) while maintaining the characteristics of the resin, such as flame retardancy, chemical resistance, and electrical properties, are needed. This is required in conjunction with technological advances in the field. Generally, fibrous reinforcing materials such as glass fiber and carbon fiber are added to the resin, as well as talc, calcium carbonate, magnesium carbonate, calcium sulfite, aluminum hydroxide, mica, molybdenum disulfide, wollastonite, graphite, white titanium, and glass. It is known that heat resistance, rigidity, and molding shrinkage rate can be improved by incorporating powdered, needle-shaped, or flaky inorganic fillers such as beads. Even in polyetherimide resins, when the above-mentioned reinforcing materials and fillers are blended, improvements in heat resistance and rigidity and reduction in mold shrinkage rate are observed depending on the blending amount. The molding shrinkage rate decreases as the amount of the reinforcing material or filler increases, and the mold fidelity in injection molding etc. becomes better, but as the molding shrinkage rate decreases, the mold releasability during injection molding decreases. , it becomes extremely difficult to remove the molded product from the mold. Therefore, excessive stress is applied during ejection of the molded product, causing problems such as distortion remaining in the molded product, stress cracks, deformation during ejection, and even breakage. Therefore, although there is a great need for resin compositions with low mold shrinkage, good mold fidelity, and good dimensional accuracy, they usually suffer from problems in releasing from molds. In reality, the amounts of reinforcing materials and fillers blended are limited in order to achieve a molding shrinkage rate that is negligible. In view of the above situation, the present inventor conducted extensive research and found that by blending wollastonite into polyetherimide resin and further using a specific amount of fluororesin, it has high heat resistance, rigidity, and strength. The inventors have discovered that it is possible to obtain a composition that has good mold shrinkage, low mold shrinkage, and good mold release properties, and have thus arrived at the present invention. The present invention consists of polyetherimide 20-80wt%, wollastonite 10-70wt%, fluororesin 0.5-80wt%
This is a polyetherimide resin composition characterized by comprising 20wt%. The polyetherimide used in the present invention has the general formula
【式】
（ここに、Ｒは６〜30個の炭素原子を有する２
価の芳香族有機基であり、R′はＲ基、２〜20個
の炭素原子を有するアルキレン基、シクロアルキ
レン基、およびC2〜3アルキレン基で連鎖停止され
たポリジオルガノシロキサン基の中から選ばれた
２価の有機基である。）で表わされる重合体であ
る。
ここで、Ｒはたとえば[Formula] (wherein R is 2 having 6 to 30 carbon atoms)
a valent aromatic organic group, R′ is an R group, an alkylene group having 2 to 20 carbon atoms, a cycloalkylene group, and a polydiorganosiloxane group chain-terminated with a C 2-3 alkylene group; It is a selected divalent organic group. ) is a polymer represented by Here, R is for example
【式】【formula】
などが挙げられる。
特に典型的なポリエーテルイミドは一般式
Examples include. Particularly typical polyetherimides have the general formula
【式】で表わされるポリマーであり、
これは米国ゼネラルエレクトリツク社より
ULTEMの商標で一般に市販されている。その製
造方法は特公昭57−9872号公報などに開示されて
いる。
本発明組成物の成分として使用される無機充填
材としては、ウオラストナイトが適用される。
ウオラストナイトは通常無処理でも使用しうる
が、ポリエーテルイミドと親和性をもたせるため
に、アミノシラン、エポキシシラン等のシランカ
ツプリング剤、クロミツククロライド、その他目
的に応じた表面処理剤を使用することができる。
本発明組成物の成分として使用されるフツ素樹
脂とは、分子中にフツ素原子（Ｆ）を含有する合
成高分子をいうが、その例としては四フツ化エチ
レン樹脂、四フツ化エチレン−パーフロロアルキ
ルビニルエーテル共重合樹脂、四フツ化エチレン
−六フツ化プロピレン共重合樹脂、四フツ化エチ
レン−エチレン共重合樹脂、三フツ化塩化エチレ
ン樹脂、フツ化ビニリデン樹脂などが挙げられ
る。
前記フツ素樹脂の内、四フツ化エチレン樹脂
（ポリテトラフルオロエチレン）は融点が約330℃
であるが、溶融粘度が高く融点以上でも流動しな
い。したがつて、該組成物中での分散状態が成形
加工条件によつても変化しにくく、組成物の特
性、機械的強度や射出成形時の離型性が変化しに
くいため好ましい。
配合量としては、ポリエーテルイミド20〜
80wt％、ウオラストナイト10〜70wt％、フツ素
樹脂0.5〜20wt％（ウオラストナイトとフツ素樹
脂の合計量としては、全樹脂組成物の20〜80wt
％）配合したものが有効である。
すなわち、ウオラストナイトとフツ素樹脂の合
計量が樹脂組成物中の80wt％を越え、ポリエー
テルイミドの量が20wt％未満の時は、混合が不
十分であり、均一な組成物が得られず、樹脂組成
物の流動性が失なわれ、成形が困難になる。ま
た、ウオラストナイトとフツ素樹脂の合計量が
20wt％未満の時は、十分な成形収縮率低下効果
が得られない。
また、ウオラストナイトとフツ素樹脂の合計量
が20〜80wt％であつても、ウオラストナイトの
量が10wt％未満であれば成形収縮率低下効果が
不十分であり、逆にフツ素樹脂の量が0.5wt％未
満であれば、射出成形時等の離型性が十分でな
い。
また、ウオラストナイトが70wt％を越えると、
混合が不十分となり、コンパウンド化の工程が困
難になり、均一な組成物が得られない。フツ素樹
脂の量が20wt％を越えると得られた成形品の強
度低下が顕著になり、好ましくない。
本発明の組成物の配合手段は特に限定されな
い。ポリエーテルイミド、ウオラストナイト、フ
ツ素樹脂を各々別々に溶融混合機に供給すること
が可能であり、またあらかじめこれら原料類を乳
鉢、ヘンシエルミキサー、ボールミル、リボンブ
レンダーなどを利用して予備混合してから溶融混
合機に供給することもできる。
なお、本発明組成物に対して、本発明の目的を
そこなわない範囲で、酸化防止剤および熱安定
剤、紫外線吸収剤、滑剤、離型剤、染料、顔料な
どの着色剤、難燃剤、難燃助剤、帯電防止剤など
の通常の添加剤を１種以上添加することができ
る。
また、他の熱可塑性樹脂（たとえば、ポリエチ
レンポリプロピレン、ポリアミド、ポリカーボネ
ート、ポリエステルカーボネート、ポリエチレン
テレフタレート、ポリブチレンテレフタレート、
ポリサルホン、ポリエーテルサルホン、変性ポリ
フエニレンオキサイド、アクリロニトリル−スチ
レン−ブタジエン樹脂（ABS樹脂）、ポリフエニ
レンサルフアイド樹脂など）、熱硬化性樹脂（例
えばフエノール樹脂、エポキシ樹脂など）を目的
に応じて配合することができる。
以下、実施例により本発明を具体的に説明する
が、これらは好適な態様の例示であつて、実施例
の組成物に限定されるものではない。
実施例 １〜５
構造式
で表わされるポリエーテルイミド（GE社製
“ULTEM”1000）と、ウオラストナイト（長瀬
産業製NYAD−Ｇ、CaSiO3針状）と四フツ化エ
チレン樹脂（JCI製フルオンL169）を第１表に示
した組成で混合し、二軸押出機（池貝鉄工製
PCM−30）により340℃の温度で溶融混練した
後、ストランドを水冷、切断してペレツトを得
た。
得られたペレツトを射出成形（住友−ネスター
ル47／28射出成形機、シリンダー温度360℃、金
型温度130℃）により、曲げ試験片を成形した。
型開き後、エジエクターピンにより成形品を突出
す際の抵抗をストレインゲージタイプの圧力セン
サーを開いて測定した。
また、得られた曲げ試験片を用いて、曲げ強
度、曲げ弾性率、熱変形温度、成形収縮率を測定
した。
曲げ強度はASTM Ｄ−790、熱変形温度は
ASTM Ｄ−648（18.6Kg／cm2）に準拠して測定し
た。結果を第１表に示す。
比較例 １〜５
実施例１〜５に用いたポリエーテルイミドとウ
オラストナイト、四フツ化エチレン樹脂を第１表
に示した割合で混合し、実施例１〜５と同様の加
工を行い、物性を測定した。結果を第１表に示
す。It is a polymer represented by the formula, which is from General Electric Company in the United States.
Commercially available under the trademark ULTEM. The manufacturing method is disclosed in Japanese Patent Publication No. 57-9872. Wollastonite is used as the inorganic filler used as a component of the composition of the present invention. Wollastonite can normally be used without treatment, but in order to make it compatible with polyetherimide, silane coupling agents such as aminosilane and epoxysilane, chromic chloride, and other surface treatment agents are used depending on the purpose. be able to. The fluororesin used as a component of the composition of the present invention refers to a synthetic polymer containing fluorine atoms (F) in the molecule, examples of which include tetrafluoroethylene resin, tetrafluoroethylene resin, Examples include perfluoroalkyl vinyl ether copolymer resin, tetrafluoroethylene-hexafluoride propylene copolymer resin, tetrafluoroethylene-ethylene copolymer resin, trifluorochloride ethylene resin, vinylidene fluoride resin, and the like. Among the fluororesins mentioned above, tetrafluoroethylene resin (polytetrafluoroethylene) has a melting point of approximately 330°C.
However, it has a high melt viscosity and does not flow even above the melting point. Therefore, it is preferable because the dispersion state in the composition does not change easily depending on the molding processing conditions, and the properties, mechanical strength, and mold releasability during injection molding of the composition do not change easily. The blending amount is polyetherimide 20~
80wt%, wollastonite 10-70wt%, fluororesin 0.5-20wt% (the total amount of wollastonite and fluororesin is 20-80wt% of the total resin composition)
%) is effective. In other words, when the total amount of wollastonite and fluororesin exceeds 80 wt% in the resin composition and the amount of polyetherimide is less than 20 wt%, mixing is insufficient and a uniform composition cannot be obtained. First, the fluidity of the resin composition is lost, making molding difficult. In addition, the total amount of wollastonite and fluororesin
When it is less than 20wt%, a sufficient molding shrinkage rate reduction effect cannot be obtained. Furthermore, even if the total amount of wollastonite and fluororesin is 20 to 80wt%, if the amount of wollastonite is less than 10wt%, the effect of reducing the molding shrinkage rate is insufficient; If the amount is less than 0.5 wt%, mold releasability during injection molding etc. will not be sufficient. In addition, when wollastonite exceeds 70wt%,
Mixing becomes insufficient, the compounding process becomes difficult, and a uniform composition cannot be obtained. If the amount of fluororesin exceeds 20 wt%, the strength of the obtained molded product will decrease significantly, which is not preferable. The means of blending the composition of the present invention is not particularly limited. It is possible to feed polyetherimide, wollastonite, and fluororesin separately to a melt mixer, and these raw materials can be premixed in advance using a mortar, Henschel mixer, ball mill, ribbon blender, etc. It can also be fed to a melt mixer. The composition of the present invention may contain antioxidants, heat stabilizers, ultraviolet absorbers, lubricants, mold release agents, colorants such as dyes and pigments, flame retardants, One or more conventional additives such as flame retardant aids and antistatic agents can be added. In addition, other thermoplastic resins (e.g., polyethylene polypropylene, polyamide, polycarbonate, polyester carbonate, polyethylene terephthalate, polybutylene terephthalate,
Polysulfone, polyethersulfone, modified polyphenylene oxide, acrylonitrile-styrene-butadiene resin (ABS resin), polyphenylene sulfide resin, etc.), thermosetting resin (e.g., phenolic resin, epoxy resin, etc.) depending on the purpose. It can be blended with Hereinafter, the present invention will be specifically explained with reference to Examples, but these are illustrative of preferred embodiments and are not limited to the compositions of Examples. Examples 1-5 Structural formula Polyetherimide ("ULTEM" 1000, manufactured by GE), wollastonite (NYAD-G, CaSiO 3 needles, manufactured by Nagase Sangyo), and tetrafluoroethylene resin (Fluon L169, manufactured by JCI) are shown in Table 1. Mix the composition shown and use a twin screw extruder (manufactured by Ikegai Iron Works).
After melt-kneading the mixture using PCM-30) at a temperature of 340°C, the strands were cooled with water and cut to obtain pellets. The obtained pellets were molded into bending test pieces by injection molding (Sumitomo-Nestal 47/28 injection molding machine, cylinder temperature 360°C, mold temperature 130°C).
After opening the mold, the resistance when ejecting the molded product using an ejector pin was measured by opening a strain gauge type pressure sensor. Further, using the obtained bending test piece, bending strength, bending elastic modulus, heat deformation temperature, and molding shrinkage rate were measured. Bending strength is ASTM D-790, heat distortion temperature is
Measured in accordance with ASTM D-648 (18.6 Kg/cm 2 ). The results are shown in Table 1. Comparative Examples 1 to 5 The polyetherimide, wollastonite, and tetrafluoroethylene resin used in Examples 1 to 5 were mixed in the proportions shown in Table 1, and the same processing as in Examples 1 to 5 was performed. Physical properties were measured. The results are shown in Table 1.
【表】
本発明組成物は、ポリエーテルイミドの耐熱性
と剛性（弾性率）が改良され、高い強度をもち、
かつ低い成形収縮率と良離型性を有することがわ
かる（実施例１〜５）。
また、本発明組成物以外の組成においては成形
収縮率の改良が十分でなかつたり（比較例２）、
強度の低下が大きかつたり（比較例４）、離型性
が不十分である（比較例５）など、目的とする良
好な特性を有していない。[Table] The composition of the present invention has improved heat resistance and rigidity (modulus of elasticity) of polyetherimide, has high strength,
It can also be seen that they have low molding shrinkage and good mold release properties (Examples 1 to 5). In addition, in compositions other than the composition of the present invention, the improvement in molding shrinkage rate was not sufficient (Comparative Example 2),
It does not have the desired good properties, such as a large decrease in strength (Comparative Example 4) and insufficient mold releasability (Comparative Example 5).
Claims (1)
トナイト10〜70wt％およびフツ素樹脂0.5〜20wt
％からなることを特徴とするポリエーテルイミド
樹脂組成物。1 20-80wt% polyetherimide, 10-70wt% wollastonite and 0.5-20wt% fluororesin
%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14779583A JPS6038464A (en) | 1983-08-11 | 1983-08-11 | Polyether-imide resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14779583A JPS6038464A (en) | 1983-08-11 | 1983-08-11 | Polyether-imide resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6038464A JPS6038464A (en) | 1985-02-28 |
| JPH0452301B2 true JPH0452301B2 (en) | 1992-08-21 |
Family
ID=15438376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14779583A Granted JPS6038464A (en) | 1983-08-11 | 1983-08-11 | Polyether-imide resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038464A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62299580A (en) * | 1986-06-17 | 1987-12-26 | 東邦レーヨン株式会社 | Sized carbon fiber and its production and composition containing sized carbon fiber |
| EP0301543B1 (en) * | 1987-07-29 | 1995-02-08 | Sumitomo Electric Industries Limited | Molded article made from a resinous composition |
| EP0423510A1 (en) * | 1989-10-20 | 1991-04-24 | General Electric Company | Highly dense thermoplastic molding compositions |
| EP0526161A1 (en) * | 1991-08-02 | 1993-02-03 | General Electric Company | Flame retardant siloxane polyetherimide copolymer compositions |
| EP0864893A3 (en) * | 1997-03-13 | 1999-09-22 | Nippon Telegraph and Telephone Corporation | Packaging platform, optical module using the platform, and methods for producing the platform and the module |
| WO2002003397A2 (en) * | 2000-06-30 | 2002-01-10 | 3M Innovative Properties Company | Insulation material for use in high-frequency electronic parts |
| EP1526157A1 (en) * | 2004-09-20 | 2005-04-27 | SOLVAY (Société Anonyme) | Aromatic polyimide composition and articles manufactured therefrom |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59182852A (en) * | 1982-12-28 | 1984-10-17 | ゼネラル・エレクトリツク・カンパニイ | Polyether imide composition for bearing |
| JPS59202258A (en) * | 1983-04-30 | 1984-11-16 | Mitsui Toatsu Chem Inc | Polyether-imide resin composition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60501006A (en) * | 1983-04-07 | 1985-07-04 | ゼネラル エレクトリツク カンパニイ | Polyetherimide-fluorinated polyolefin blend |
-
1983
- 1983-08-11 JP JP14779583A patent/JPS6038464A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59182852A (en) * | 1982-12-28 | 1984-10-17 | ゼネラル・エレクトリツク・カンパニイ | Polyether imide composition for bearing |
| JPS59202258A (en) * | 1983-04-30 | 1984-11-16 | Mitsui Toatsu Chem Inc | Polyether-imide resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6038464A (en) | 1985-02-28 |
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