JPS6212936B2 - - Google Patents
Info
- Publication number
- JPS6212936B2 JPS6212936B2 JP18370880A JP18370880A JPS6212936B2 JP S6212936 B2 JPS6212936 B2 JP S6212936B2 JP 18370880 A JP18370880 A JP 18370880A JP 18370880 A JP18370880 A JP 18370880A JP S6212936 B2 JPS6212936 B2 JP S6212936B2
- Authority
- JP
- Japan
- Prior art keywords
- polycarbonate resin
- parts
- weight
- polyethylene
- present
- 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
Links
- 239000004431 polycarbonate resin Substances 0.000 claims description 31
- 229920005668 polycarbonate resin Polymers 0.000 claims description 31
- -1 polyethylene Polymers 0.000 claims description 16
- 239000004698 Polyethylene Substances 0.000 claims description 14
- 229920000573 polyethylene Polymers 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 229920001577 copolymer Polymers 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 1
- 239000002904 solvent Substances 0.000 description 15
- 239000008188 pellet Substances 0.000 description 11
- 229920002943 EPDM rubber Polymers 0.000 description 10
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 10
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003502 gasoline Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 150000002989 phenols Chemical class 0.000 description 3
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000006353 environmental stress Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000008041 oiling agent Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- RXNYJUSEXLAVNQ-UHFFFAOYSA-N 4,4'-Dihydroxybenzophenone Chemical compound C1=CC(O)=CC=C1C(=O)C1=CC=C(O)C=C1 RXNYJUSEXLAVNQ-UHFFFAOYSA-N 0.000 description 1
- VWGKEVWFBOUAND-UHFFFAOYSA-N 4,4'-thiodiphenol Chemical group C1=CC(O)=CC=C1SC1=CC=C(O)C=C1 VWGKEVWFBOUAND-UHFFFAOYSA-N 0.000 description 1
- NZGQHKSLKRFZFL-UHFFFAOYSA-N 4-(4-hydroxyphenoxy)phenol Chemical compound C1=CC(O)=CC=C1OC1=CC=C(O)C=C1 NZGQHKSLKRFZFL-UHFFFAOYSA-N 0.000 description 1
- RQCACQIALULDSK-UHFFFAOYSA-N 4-(4-hydroxyphenyl)sulfinylphenol Chemical compound C1=CC(O)=CC=C1S(=O)C1=CC=C(O)C=C1 RQCACQIALULDSK-UHFFFAOYSA-N 0.000 description 1
- 125000004203 4-hydroxyphenyl group Chemical group [H]OC1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920009204 Methacrylate-butadiene-styrene Polymers 0.000 description 1
- 239000004419 Panlite Substances 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
本発明はポリカーボネート樹脂組成物、更に詳
しくは耐溶剤性および滑性の改良されたポリカー
ボネート樹脂組成物に関する。
ポリカーボネート樹脂は、高度の耐衝撃性を具
備し、自己消火性であり、耐熱性が他の樹脂に比
して高く、しかも電気的特性及び寸法安定性が優
れていることからエンジニアリングプラスチツク
として広く使用されている。
しかし、ポリカーボネート樹脂には耐溶剤性が
低いという欠点があり、このため大型の或いは複
雑な形状の残留応力の大きい成形品は溶剤の雰囲
気に接すると応力き裂を生ずることがあつた。そ
れ故、ポリカーボネート樹脂は高い衝撃強度を有
するにもかかわらず、ガソリン、油、クリーニン
グ剤等の溶剤に対する抵抗性が要求される用途、
例えば自動車部品等にはあまり使用されなかつ
た。
本発明者は、かかる欠点を克服し、衝撃強度、
耐熱性等良好な特性を損うことなく、かつ耐環境
応力き裂性にすぐれた成形品を与えるポリカーボ
ネート樹脂組成物を得るべく鋭意研究した結果、
ポリカーボネート樹脂成形品の環境応力き裂を防
止するには樹脂の耐溶剤性を改良するとともに滑
性を向上せしめ成形品に応力の残らないようにす
ることが肝要であること、この耐溶剤性と滑性の
向上には特定割合のポリエチレンとエチレン―プ
ロピレン共重合体〔以下、EPMと言う〕及び／
又はエチレン―プロピレン―ジエン共重合体〔以
下、EPDMという／とを併用配合することが極め
て有効であることを知見し、本発明に到達したも
のである。
すなわち、本発明はポリカーボネート樹脂(A)
100重量部当り、ポリエチレン(B)0.3〜20重量部並
びにEPM及び／またはEPDM(C)0.3〜20重量部を
配合せしめることを特徴とするポリカーボネート
樹脂組成物である。
本発明のポリカーボネート樹脂組成物は、滑性
が優れているため、大型や複雑な形状品に残留応
力を小さくして成形でき、且つポリカーボネート
樹脂の衝撃強度を保持して耐溶剤性が大巾に改良
されているので、その成形品はガソリン、油、ク
リーニング剤等の溶剤に接しても応力き裂を生ず
ることがない。従つて、本発明のポリカーボネー
ト樹脂組成物は、ガソリン、油、クリーニング剤
等に対する抵抗性が要求される用途、例えば自動
車用部品等に使用できる。本発明の特長である高
度の耐溶剤性と滑性は、ポリエチレンとEDM及
び／またはEPDMとを組合せて配合することによ
つて始めて得られるものであり、例えばポリエチ
レン単独添加或いはEPM単独添加によつては得
ることができない。更にポリエチレンとブタジエ
ンラバーとを組み合せて配合しても本発明のよう
な効果、殊に耐溶剤性は得られない。
本発明のポリカーボネート樹脂組成物のすぐれ
た特性は、ポリカーボネート樹脂、ポリエチレン
及び並びにEPM及び／またはEPDMの相互作用
によつて達成されると推考されるが、その作用機
構等は詳らかでない。
本発明において用いられるポリカーボネート樹
脂(A)は、酸受容体および分子量調整剤の存在下で
の２価フエノールとホスゲンの如きカーボネート
前駆体との反応；或いは２価フエノールとジフエ
ニルカーボネートの如きカーボネート前駆体との
エステル交換反応によつて製造することができ
る。ここで使用しうる２価フエノールはビスフエ
ノール類が好ましく、特に２，２―ビス（４―ヒ
ドロキシフエニル）プロパン〔以下ビスフエノー
ルＡと言う〕が好ましい。またビスフエノールＡ
の一部または全部を他の２価フエノールで置換し
てもよい。ビスフエノールＡ以外の２価フエノー
ルとしては、例えばハイドロキノン、４，4′―ジ
ヒドロキシフエニル、ビス（４―ヒドロキシフエ
ニル）アルカン、ビス（４―ヒドロキシフエニ
ル）シクロアルカン、ビス（４―ヒドロキシフエ
ニル）スルフイツド、ビス（４―ヒドロキシフエ
ニル）スルホン、ビス（４―ヒドロキシフエニ
ル）スルホキシド、ビス（４―ヒドロキシフエニ
ル）ケトン、ビス（４―ヒドロキシフエニル）エ
ーテル等及びビス（3.5―ジブロモ―４―ヒドロ
キシフエニル）プロパンの如きハロゲン化ビスフ
エノール類を挙げることができる。これら２価フ
エノールのホモポリマーまたは２種以上を用いた
コポリマー或いはこれらの混合物であつてもよ
い。かかるポリカーボネート樹脂は、市販品とし
て容易に入手することができる。
本発明において用いられるポリエチレン(B)、並
びにEPM及び／またはEPDM(C)は、通常市販さ
れているものでよいが、溶融流動性がポリカーボ
ネート樹脂の特性に近いものが好ましい。
前記ポリエチレン(B)の配合量は、ポリカーボネ
ート樹脂(A)100重量部当り、0.3〜20重量部であ
り、さらに好ましくは１〜10重量部である。ま
た、前記EPM及びEPDM(C)の配合量は、ポリカ
ーボネート樹脂(A)100重量部当り、0.3〜20重量部
であり、さらに好ましくは１〜10重量部である。
EPM及びEPDMを併用する場合には、その総量
が上記量範囲内にある。(B)成分及び(C)成分の配合
量がそれぞれ0.3重量部未満では本発明の効果は
得られず、また(B)成分及び(C)成分の配合量がそれ
ぞれ20重量部より多くなると層剥離を生じ成形品
の外観を損つたり、耐衝撃性等のポリカーボネー
ト樹脂本来の特長を損うので好ましくない。
本発明のポリカーボネート樹脂組成物の調製は
任意の方法で行われるが、その方法としては例え
ばポリカーボネート樹脂(A)にポリエチレン(B)並び
にEPM及び／またはEPDM(C)を加え、Ｖ型ブレ
ンダー、スーパーミキサー等の如き混合機で混合
する方法或いは押出機、コニーダーなどを用いて
溶融状態で混合する方法；ポリエチレン(B)と
EPM及び／またはEPDM(C)とをあらかじめ混練
ロール、バンバリーミキサー等にて混合し、これ
をポリカーボネート樹脂(A)に直接または溶融状態
で混合する方法などをあげることができる。特に
多段に押出す方法は各成分の混練度がよくなるの
で好ましい方法である。
本発明のポリカーボネート樹脂組成物には、更
にその改質を目的として他の添加剤、例えばガラ
ス繊維、アスベスト、カーボン繊維等の如き強化
材、熱安定剤、酸化防止剤、光安定剤、難燃剤、
可塑剤、充填剤、帯電防止剤、離型剤、発泡剤な
どを添加することができる。また例えばポリプロ
ピレン、ポリスチレン、ポリメチルメタクリレー
ト、AS樹脂、ABS樹脂、MBS樹脂、ポリエステ
ル、ポリフエニレンオキサイド等の他の樹脂を混
合することができる。
以下実施例を掲げて本発明を更に説明する。
尚、実施例中の部は重量部を示す。
また評価は以下の方法で行なつた。
１ 耐溶剤性評価法：
予め乾燥したペレツトを射出成形機を用いて
127mm×12.7mm×6.35mmの曲げ試験片に成形し
た。曲げ試験片は23℃、湿度50％で24時間処理
したのち引張り試験機（新興(株)製、TOM500D
型）にて23℃で曲げ強度(a)を測定した。また曲
げ試験片は23℃、湿度50％にて処理したのち、
ガソリン（丸善石油(株)、レギユラーガソリン）
中に15秒間浸し、そのまゝの状態で上記と同様
にして曲げ強度(b)を測定した。
耐溶剤性は強度保持率(C)＝(b)×１００／(a)にて
評価
し、この強度保持率が大きい程耐溶剤性のすぐ
れていることを表わす。
２ 滑性評価法：
予め乾燥したペレツトを用いて成形温度300
℃、金型温度80℃の条件下で肉厚４mm、高さ20
mm、底部63mmφのカツプ状成形品を成形し、該
成形品を離型する際の荷重を、突出プレートに
取り付けたストレンゲージによつて測定した。
この離型荷重によつて外部滑性を評価し、この
荷重値が小さい程滑性のすぐれていることを表
わす。
３ 耐衝撃性評価法：
予め乾燥したペレツトを射出成形機を用いて
64mm×12.7mm×3.18及び64mm×12.7mm×6.35の
試験片をそれぞれ成形し、これら試験片を用い
てASTM−D256に従つて衝撃強度を測定し
た。この衝撃強度は大きい程耐衝撃性のすぐれ
ていることを表わす。
実施例 １、２
予め乾燥したポリカーボネート樹脂（帝人化成
(株)製；パンライトＬ−1225）ペレツト100部に
ポリエチレン（三井石油化学(株)製；ネオゼツクス
4060J）５部とEPM（日本イー・ピー・ラバー
(株)製；EP−07P）細片を第１表に示す量加え、ス
ーパーミキサーを用いて混合し、30mmφ押出機で
押出しペレツト化した。該ペレツトは前記評価方
法で耐溶剤性、滑性及び耐衝撃性を評価した。そ
の結果を第１表に示す。
実施例 ３、４
予め乾燥したポリカーボネート樹脂ペレツト
100部に、ポリエチレン５部とEPDM（日本イ
ー・ピー・ラバー(株)製：EP−57P）細片を第１表
に示す量を加え、スーパーミキサーを用いて混合
し、30mmφ押出機で押出しペレツト化した。該ペ
レツトは前記評価方法で耐溶剤性、滑性及び耐衝
撃性を評価した。その結果を第１表に併記して示
す。
比較例 １
予め乾燥したポリカーボネート樹脂ペレツト単
独を実施例１に従つて成形し、その特性を評価し
た。その結果を第１表に併記する。
比較例 ２
予め乾燥したポリカーボネート樹脂ペレツト
100部にポリエチレン８部を加える以外は実施例
１、２に従つて成形し、その特性を評価した。そ
の結果を第１表に併記する。
The present invention relates to polycarbonate resin compositions, and more particularly to polycarbonate resin compositions with improved solvent resistance and lubricity. Polycarbonate resin has a high degree of impact resistance, is self-extinguishing, has higher heat resistance than other resins, and has excellent electrical properties and dimensional stability, so it is widely used as an engineering plastic. has been done. However, polycarbonate resins have the disadvantage of low solvent resistance, and as a result, large or complex-shaped molded products with large residual stress may develop stress cracks when exposed to a solvent atmosphere. Therefore, although polycarbonate resin has high impact strength, it is used in applications that require resistance to solvents such as gasoline, oil, and cleaning agents.
For example, it was not often used in automobile parts. The present inventors have overcome these drawbacks and improved the impact strength and
As a result of intensive research to obtain a polycarbonate resin composition that provides molded products with excellent environmental stress cracking resistance without impairing good properties such as heat resistance,
In order to prevent environmental stress cracks in polycarbonate resin molded products, it is important to improve the solvent resistance of the resin and improve its lubricity so that no stress remains in the molded product. To improve lubricity, a specific proportion of polyethylene and ethylene-propylene copolymer (hereinafter referred to as EPM) and/or
The present invention was achieved based on the finding that it is extremely effective to combine the ethylene-propylene-diene copolymer (hereinafter referred to as EPDM). That is, the present invention uses polycarbonate resin (A)
This is a polycarbonate resin composition characterized by blending 0.3 to 20 parts by weight of polyethylene (B) and 0.3 to 20 parts by weight of EPM and/or EPDM (C) per 100 parts by weight. The polycarbonate resin composition of the present invention has excellent lubricity, so it can be molded into large and complex-shaped products with low residual stress, and it also maintains the impact strength of polycarbonate resin and has a wide range of solvent resistance. Because of this improved molding, the molded product will not develop stress cracks when exposed to solvents such as gasoline, oil, and cleaning agents. Therefore, the polycarbonate resin composition of the present invention can be used in applications that require resistance to gasoline, oil, cleaning agents, etc., such as automobile parts. The high degree of solvent resistance and lubricity that are the features of the present invention can only be obtained by blending polyethylene in combination with EDM and/or EPDM. For example, by adding polyethylene alone or EPM alone. You can't get it. Furthermore, even if polyethylene and butadiene rubber are combined, the effects of the present invention, especially the solvent resistance, cannot be obtained. It is presumed that the excellent properties of the polycarbonate resin composition of the present invention are achieved through the interaction of the polycarbonate resin, polyethylene, and EPM and/or EPDM, but the mechanism of action is not clear. The polycarbonate resin (A) used in the present invention can be prepared by reacting divalent phenol with a carbonate precursor such as phosgene in the presence of an acid acceptor and a molecular weight modifier; or by reacting divalent phenol with a carbonate precursor such as diphenyl carbonate. It can be produced by transesterification reaction with The divalent phenol that can be used here is preferably bisphenols, and 2,2-bis(4-hydroxyphenyl)propane (hereinafter referred to as bisphenol A) is particularly preferred. Also, bisphenol A
may be partially or entirely replaced with other dihydric phenols. Examples of divalent phenols other than bisphenol A include hydroquinone, 4,4'-dihydroxyphenyl, bis(4-hydroxyphenyl)alkane, bis(4-hydroxyphenyl)cycloalkane, and bis(4-hydroxyphenyl). enyl) sulfide, bis(4-hydroxyphenyl) sulfone, bis(4-hydroxyphenyl) sulfoxide, bis(4-hydroxyphenyl) ketone, bis(4-hydroxyphenyl) ether, etc., and bis(3.5-dibromo Examples include halogenated bisphenols such as -4-hydroxyphenyl)propane. It may be a homopolymer of these dihydric phenols, a copolymer using two or more types, or a mixture thereof. Such polycarbonate resins are easily available as commercial products. The polyethylene (B) and EPM and/or EPDM (C) used in the present invention may be those that are normally commercially available, but those whose melt fluidity is close to the properties of polycarbonate resin are preferred. The blending amount of the polyethylene (B) is 0.3 to 20 parts by weight, more preferably 1 to 10 parts by weight, per 100 parts by weight of the polycarbonate resin (A). Further, the blending amount of the EPM and EPDM (C) is 0.3 to 20 parts by weight, more preferably 1 to 10 parts by weight, per 100 parts by weight of the polycarbonate resin (A).
When EPM and EPDM are used together, the total amount is within the above amount range. If the amount of component (B) and component (C) is less than 0.3 parts by weight, the effect of the present invention cannot be obtained, and if the amount of component (B) and component (C) is more than 20 parts by weight, the layer This is not preferable because it causes peeling, which impairs the appearance of the molded product, and impairs the inherent characteristics of polycarbonate resin, such as impact resistance. The polycarbonate resin composition of the present invention can be prepared by any method, but for example, polyethylene (B) and EPM and/or EPDM (C) are added to polycarbonate resin (A), A method of mixing with a mixer such as a mixer, or a method of mixing in a molten state using an extruder, co-kneader, etc.; with polyethylene (B).
Examples include a method of mixing EPM and/or EPDM (C) in advance using a kneading roll, a Banbury mixer, etc., and then mixing this with the polycarbonate resin (A) directly or in a molten state. In particular, multistage extrusion is a preferred method because it improves the degree of kneading of each component. The polycarbonate resin composition of the present invention may further contain other additives for the purpose of modification, such as reinforcing materials such as glass fiber, asbestos, carbon fiber, etc., heat stabilizers, antioxidants, light stabilizers, and flame retardants. ,
Plasticizers, fillers, antistatic agents, mold release agents, blowing agents, etc. can be added. Other resins such as polypropylene, polystyrene, polymethyl methacrylate, AS resin, ABS resin, MBS resin, polyester, and polyphenylene oxide can also be mixed. The present invention will be further explained below with reference to Examples.
In addition, parts in Examples indicate parts by weight. Moreover, the evaluation was performed by the following method. 1 Solvent resistance evaluation method: Pre-dried pellets are molded using an injection molding machine.
It was molded into a bending test piece of 127 mm x 12.7 mm x 6.35 mm. The bending test pieces were treated at 23℃ and 50% humidity for 24 hours, and then tested using a tensile tester (manufactured by Shinko Co., Ltd., TOM500D).
The bending strength (a) was measured at 23°C using a mold). In addition, after processing the bending test pieces at 23℃ and 50% humidity,
Gasoline (Maruzen Oil Co., Ltd., regular gasoline)
The flexural strength (b) was measured in the same manner as above. Solvent resistance was evaluated by strength retention (C)=(b)×100/(a), and the higher the strength retention, the better the solvent resistance. 2 Smoothness evaluation method: Molding temperature 300 using pre-dried pellets
℃, mold temperature 80℃, wall thickness 4mm, height 20℃
A cup-shaped molded product with a bottom diameter of 63 mm was molded, and the load when releasing the molded product was measured using a strain gauge attached to a protruding plate.
The external lubricity is evaluated based on this mold release load, and the smaller the load value is, the better the lubricity is. 3 Impact resistance evaluation method: Pre-dried pellets are molded using an injection molding machine.
Test pieces of 64 mm x 12.7 mm x 3.18 and 64 mm x 12.7 mm x 6.35 were molded, respectively, and impact strength was measured using these test pieces in accordance with ASTM-D256. The higher the impact strength, the better the impact resistance. Examples 1 and 2 Pre-dried polycarbonate resin (Teijin Kasei Co., Ltd.
100 parts of polyethylene (manufactured by Mitsui Petrochemical Co., Ltd.; Neozex) were added to 100 parts of pellets (manufactured by Panlite L-1225)
4060J) 5th part and EPM (Japan EP Rubber
Co., Ltd.; EP-07P) was added in the amount shown in Table 1, mixed using a super mixer, and extruded into pellets using a 30 mmφ extruder. The pellets were evaluated for solvent resistance, slipperiness and impact resistance using the evaluation methods described above. The results are shown in Table 1. Examples 3 and 4 Pre-dried polycarbonate resin pellets
To 100 parts, add 5 parts of polyethylene and EPDM (manufactured by Japan EP Rubber Co., Ltd.: EP-57P) strips in the amounts shown in Table 1, mix using a super mixer, and extrude using a 30 mmφ extruder. Turned into pellets. The pellets were evaluated for solvent resistance, slipperiness and impact resistance using the evaluation methods described above. The results are also shown in Table 1. Comparative Example 1 A pre-dried polycarbonate resin pellet alone was molded according to Example 1, and its properties were evaluated. The results are also listed in Table 1. Comparative Example 2 Pre-dried polycarbonate resin pellets
Molding was performed in accordance with Examples 1 and 2 except that 8 parts of polyethylene was added to 100 parts, and the properties thereof were evaluated. The results are also listed in Table 1.
【表】
第１表から、本発明の組成物はポリカーボネー
ト樹脂本来の耐衝撃性を保持しながら、優れた耐
溶剤性と滑性を有していることがわかる。Table 1 shows that the composition of the present invention has excellent solvent resistance and lubricity while retaining the impact resistance inherent to polycarbonate resin.
Claims (1)
リエチレン(B)0.3〜20重量部、並びにエチレン―
プロピレン共重合体及び／またはエチレン―プロ
ピレン―ジエン共重合体(C)0.3〜20重量部を配合
せしめることを特徴とするポリカーボネート樹脂
組成物。1. Per 100 parts by weight of polycarbonate resin (A), 0.3 to 20 parts by weight of polyethylene (B) and ethylene.
A polycarbonate resin composition comprising 0.3 to 20 parts by weight of a propylene copolymer and/or an ethylene-propylene-diene copolymer (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18370880A JPS57108152A (en) | 1980-12-26 | 1980-12-26 | Polycarbonate resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18370880A JPS57108152A (en) | 1980-12-26 | 1980-12-26 | Polycarbonate resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57108152A JPS57108152A (en) | 1982-07-06 |
| JPS6212936B2 true JPS6212936B2 (en) | 1987-03-23 |
Family
ID=16140558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18370880A Granted JPS57108152A (en) | 1980-12-26 | 1980-12-26 | Polycarbonate resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57108152A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4639481A (en) * | 1982-09-27 | 1987-01-27 | General Electric Company | Modified thermoplastic polyester molding compositions and articles molded therefrom |
| US5216079A (en) * | 1983-02-14 | 1993-06-01 | Kawasaki Lnp Inc. | Polyolefin lubricant systems and polymer composites containing such lubricants |
| US4945126A (en) * | 1983-02-14 | 1990-07-31 | Ici Americas Inc. | Methods of improving friction and wear properties of polymer systems |
| EP0308179B1 (en) * | 1987-09-17 | 1994-04-27 | Tonen Sekiyukagaku K.K. | Thermoplastic resin composition |
| US5106909A (en) * | 1988-10-14 | 1992-04-21 | Tonen Sekiyukagaku Kabushiki Kaisha | Modified polyolefin-polyester graft copolymer, method of producing same and thermoplastic resin composition containing such graft copolymer |
| WO1992018571A1 (en) * | 1991-04-22 | 1992-10-29 | Idemitsu Petrochemical Co., Ltd. | Polycarbonate resin composition |
| JP3647036B2 (en) * | 1992-07-08 | 2005-05-11 | カワサキ ケミカル ホールディング シーオー． | Elastomer toughened wear resistant composition |
| US6887938B2 (en) | 2003-02-04 | 2005-05-03 | General Electric Company | Compositions containing polyphenylene ether and/or polystyrene having improved tribological properties and methods for improving tribological properties of polyphenylene ether and/or polystyrene compositions |
| CN114539757A (en) * | 2022-03-09 | 2022-05-27 | 无锡赢同新材料科技有限公司 | Low-temperature-resistant and salt-fog-resistant polycarbonate composite material and preparation method thereof |
-
1980
- 1980-12-26 JP JP18370880A patent/JPS57108152A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57108152A (en) | 1982-07-06 |
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