JP3599865B2 - Polymer composition - Google Patents
Polymer composition Download PDFInfo
- Publication number
- JP3599865B2 JP3599865B2 JP33879295A JP33879295A JP3599865B2 JP 3599865 B2 JP3599865 B2 JP 3599865B2 JP 33879295 A JP33879295 A JP 33879295A JP 33879295 A JP33879295 A JP 33879295A JP 3599865 B2 JP3599865 B2 JP 3599865B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- molding
- ethylene copolymer
- polymer composition
- slidability
- 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.)
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Description
【0001】
【発明の属する技術分野】
本発明は、塩素化エチレンコポリマー架橋体アロイの組成物に関する。さらに詳しくは摺動性に優れ、とくに自動車用窓ガラスの昇降案内部品として好適な塩素化エチレンコポリマー架橋体アロイの組成物に関する。
【0002】
【従来の技術】
塩素化エチレンコポリマー架橋体アロイ(以下、単に塩素化ポリマーアロイと略称することがある)は、クロロプレンゴムやニトリルゴムなどと同様な外観、感触及び機械的性質を有し、しかも熱可塑性樹脂同様に、押出成形、射出成形、中空成形、カレンダー成形などの加工ができるところから、自動車部品、工業用部品、建築材料などの用途への利用が期待されている。例えば、グラスラン、ウェザーストリップドアモールなどの自動車用窓ガラスの昇降案内部品は、塩素化ポリマーアロイの有する柔軟性、弾力性、耐摩耗性、耐候性、耐薬品性、密封性などの諸特性が充分に生かせる用途である。このような自動車用窓ガラスの昇降案内部品として種々の構造のものがあり、その構造によっては摩擦抵抗の大きい塩素化ポリマーアロイを用いた場合には、窓ガラスの摺動抵抗が大きくなりすぎることがあった。
【0003】
【発明が解決しようとする課題】
そこで本発明者らは、塩素化ポリマーアロイの有する優れた特性を実質的に損なうことなく摺動性を改善することを試みた。摺動性改善の最も簡便な方法として滑剤の添加が考えられるが、多数の滑剤について検討した結果、一般に知られている滑剤の多くが、その添加効果を発揮できないなかで、特定分子量のポリオキシアルキレンオキシドのみが所望の効果を発揮することを見いだすに至り、本発明に到達した。
【0004】
【課題を解決するための手段】
本発明は、塩素化エチレンコポリマー架橋体アロイ100重量部に対し、分子量200〜600のポリエチレングリコール0.5〜5重量部を配合してなる重合体組成物に関する。
【0005】
【発明の実施の形態】
塩素化エチレンコポリマー架橋体アロイは、結合塩素を有し、エチレンコポリマーの部分架橋構造を有する熱可塑性ゴムであって、永久伸びが20%以下、好ましくは10%以下、ショアA硬度が50〜95、好ましくは55〜90、190℃、10kg荷重で測定したメルトフローレートが1〜100g/10分、好ましくは2〜50g/10分の特性を有するものが望ましく、三井・デュポンポリケミカル株式会社より商品名“アルクリン”として発売されている。
【0006】
本発明においては、塩素化ポリマーアロイ100重量部に対し、分子量が200〜600、好ましくは300〜600のポリエチレングリコールを0.2〜5重量部、好ましくは0.4〜3重量部の割合で配合する。ポリエチレングリコールの分子量が上記範囲以上のものを用いてもほとんど摺動性改良効果は認められない。また、シリコーンオイル、ポリエチレンワックス、脂肪酸塩、脂肪酸アミド等、一般に使用されている滑剤を配合しても摺動性改良にほとんど効果を示さない。
【0007】
塩素化ポリマーアロイとポリエチレングリコールとからなる本発明の重合体組成物には、任意に各種添加剤を配合することができる。このような添加剤として、例えば、酸化防止剤、熱安定剤、耐候安定剤、着色剤、無機充填剤などを例示することができる。
【0008】
本発明の重合体組成物は、押出成形、射出成形、中空成形、カレンダー成形など各種成形方法により、種々の成形品を製造することができる。このような成形においてはまた、異種材料との共押出、多層成形、インサート成形などの特殊成形法を採用することもできる。
【0009】
このような成形物は広い用途に使用することができるが、特に摺動性が優れた点を生かす用途として、自動車用窓ガラスの昇降案内部品がある。例えばハードトップタイプの自動車のドアミラー用サッシュホルダーは、従来重合体として加硫ゴムを使用し、プレス成形によりサッシュに装着し、また摺動性を付与するため植毛することによって製造していたが、工程が煩雑で生産性が低かった。これに対し本発明の重合体組成物を使用する場合には、インサート射出成形によって板金インサートと一体化できるため生産速度が高く、また摺動性に優れているため植毛の必要性がない。とくに摺動性を一層改良するためにガラスとの摺動面を粗面化しておけばより効果的である。
【0010】
【発明の効果】
本発明組成物は特定分子量のポリエチレングリコールを配合したことにより、塩素化ポリマーアロイの優れた特性、例えば耐候性、耐熱性、耐油性、耐薬品性、耐寒性、ゴム的弾性、柔軟性、加工性を保持しつつ、その摺動性が著しく改良されているので、特に自動車のドアミラー用サッシュホルダー等、自動車用窓ガラスの昇降案内部品用材料として有用である。
【0011】
【実施例】
[実施例1]
(シート作成)
塩素化エチレンコポリマー架橋体アロイ(三井・デュポンポリケミカル製品アルクリンJ2060BK)に滑剤としてポリエチレングリコール(平均分子量400)の所定量を添加した配合物を2本ロールで混練して作成し、更に熱プレス(180℃)によってシートを作成した。この際プレスシート表面が平滑なシートとエンボス処理した下記2種のシボ付きシートを作成した。
エンボス面1=80meshサンドペーパー面転写
エンボス面2=180meshサンドペーパー面転写
【0012】
(滑り摩擦試験)
その後上記試料を23℃、湿度60%の状態で24時間以上放置したものを、下記の方法により滑り摩擦試験に供した。
測定装置:テスター産業(株)製滑り摩擦試験測定装置
測定法:JIS K7125に準拠。
測定条件:
固定側:ガラス(ロードセル側)
移動側:当該プレスシート試料
引き取り速度:100mm/分
動摩擦係数の測定結果を表1に示す。本発明組成物による実施例1では動摩擦係数が所望の0.4以下を大きく上回る高摺動性を示した。
【0013】
[比較例1]
実施例1で用いたと同じ塩素化エチレンコポリマー架橋体アロイ(三井・デュポンポリケミカル製品アルクリンJ2060BK)を、ポリエチレングリコールを添加せず単味で、実施例1と同様にして滑り摩擦試験を行い、動摩擦係数を測定した。結果を表1に示す。滑剤を添加しない塩素化エチレンコポリマー架橋体アロイでは動摩擦係数が所望の0.4より大きい。
【0014】
[比較例2〜7]
実施例1で用いた塩素化エチレンコポリマー架橋体アロイ(三井・デュポンポリケミカル製品アルクリンJ2060BK)に、ポリエチレングリコールの代わりに表1記載の1種または2種以上の滑剤を表1記載の添加量で配合し、実施例1と同様にして滑り摩擦試験を行い、動摩擦係数を測定した。結果を表1に示す。いずれも所望の動摩擦係数0.4以下のものは得られなかった。
【0015】
【表1】
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to compositions of crosslinked chlorinated ethylene copolymer alloys. More specifically, the present invention relates to a chlorinated ethylene copolymer crosslinked alloy composition which has excellent slidability and is particularly suitable as an ascending and descending guide part of a window glass for automobiles.
[0002]
[Prior art]
A chlorinated ethylene copolymer cross-linked alloy (hereinafter may be simply referred to as a chlorinated polymer alloy) has the same appearance, feel and mechanical properties as chloroprene rubber and nitrile rubber, and also has the same properties as thermoplastic resins. Since it can be processed by extrusion molding, injection molding, hollow molding, calendar molding, and the like, it is expected to be used for applications such as automobile parts, industrial parts, and building materials. For example, ascent and descent components for automotive window glass such as glass runs and weatherstrip door moldings have sufficient properties such as flexibility, elasticity, abrasion resistance, weather resistance, chemical resistance, and sealing properties of chlorinated polymer alloys. This is an application that can be used for There are various kinds of structures for the elevating guide parts of such window glasses for automobiles. Depending on the structure, when a chlorinated polymer alloy having a large frictional resistance is used, the sliding resistance of the window glass becomes too large. was there.
[0003]
[Problems to be solved by the invention]
Therefore, the present inventors have attempted to improve the slidability without substantially impairing the excellent properties of the chlorinated polymer alloy. Addition of a lubricant can be considered as the simplest method of improving the slidability, but as a result of examining a large number of lubricants, many of the generally known lubricants cannot exhibit the effect of the addition. The inventors have found that only the alkylene oxide exerts the desired effect, and have reached the present invention.
[0004]
[Means for Solving the Problems]
The present invention relates to a polymer composition comprising 100 parts by weight of a crosslinked chlorinated ethylene copolymer alloy and 0.5 to 5 parts by weight of polyethylene glycol having a molecular weight of 200 to 600 .
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
The crosslinked chlorinated ethylene copolymer alloy is a thermoplastic rubber having a bonded chlorine and a partially crosslinked structure of an ethylene copolymer, and has a permanent elongation of 20% or less, preferably 10% or less, and a Shore A hardness of 50 to 95. Preferably, the melt flow rate measured at 55 to 90, 190 ° C. and 10 kg load has a characteristic of 1 to 100 g / 10 min, preferably 2 to 50 g / 10 min, and from Mitsui DuPont Polychemical Co., Ltd. It is sold under the trade name "Arculin".
[0006]
In the present invention, polyethylene glycol having a molecular weight of 200 to 600 , preferably 300 to 600 is used in an amount of 0.2 to 5 parts by weight, preferably 0.4 to 3 parts by weight, based on 100 parts by weight of the chlorinated polymer alloy. Mix. Even if the molecular weight of the polyethylene glycol is more than the above range, the effect of improving the slidability is hardly recognized. Further, even if a generally used lubricant such as silicone oil, polyethylene wax, fatty acid salt, fatty acid amide, etc. is blended, it has little effect on the improvement of the sliding property.
[0007]
The polymer composition of the present invention comprising a chlorinated polymer alloy and polyethylene glycol may optionally contain various additives. Examples of such additives include an antioxidant, a heat stabilizer, a weather resistance stabilizer, a colorant, and an inorganic filler.
[0008]
Various molded articles can be produced from the polymer composition of the present invention by various molding methods such as extrusion molding, injection molding, hollow molding, and calendar molding. In such molding, special molding methods such as coextrusion with different materials, multilayer molding, and insert molding can also be employed.
[0009]
Such a molded article can be used for a wide range of applications, but one of the applications that makes use of the excellent sliding property is an ascent / descent guide component for a window glass for an automobile. For example, a sash holder for a door mirror of a hard-top type automobile has conventionally been manufactured by using vulcanized rubber as a polymer, attaching the sash to the sash by press molding, and implanting hair to impart slidability. The process was complicated and the productivity was low. On the other hand, when the polymer composition of the present invention is used, it can be integrated with a sheet metal insert by insert injection molding, so that the production speed is high, and since it has excellent slidability, there is no need for flocking. In particular, it is more effective to roughen the sliding surface with glass in order to further improve the slidability.
[0010]
【The invention's effect】
The composition of the present invention contains a polyethylene glycol having a specific molecular weight, thereby providing excellent properties of the chlorinated polymer alloy, such as weather resistance, heat resistance, oil resistance, chemical resistance, cold resistance, rubber elasticity, flexibility, and processing. Since the slidability is remarkably improved while maintaining the slidability, it is particularly useful as a material for ascending and descending guide parts of window glass for automobiles, such as sash holders for automobile door mirrors.
[0011]
【Example】
[Example 1]
(Sheet creation)
A chlorinated ethylene copolymer cross-linked alloy (Mitsui-Dupont polychemical product Arcrin J2060BK) was added with a predetermined amount of polyethylene glycol (average molecular weight: 400) as a lubricant, and the mixture was kneaded with two rolls. 180 ° C.). At this time, the following two types of embossed sheets having a pressed sheet surface and an embossed sheet were prepared.
Embossed surface 1 = 80 mesh sandpaper surface transfer Embossed surface 2 = 180 mesh sandpaper surface transfer
(Sliding friction test)
Thereafter, the above sample was left at 23 ° C. and a humidity of 60% for 24 hours or more, and subjected to a sliding friction test by the following method.
Measuring device: Sliding friction test measuring device manufactured by Tester Sangyo Co., Ltd. Measuring method: Based on JIS K7125.
Measurement condition:
Fixed side: Glass (load cell side)
Moving side: The press sheet sample take-up speed: 100 mm / min. The measurement results of the coefficient of dynamic friction are shown in Table 1. In Example 1 using the composition of the present invention, high slidability in which the dynamic friction coefficient greatly exceeded the desired value of 0.4 or less was exhibited.
[0013]
[Comparative Example 1]
The same chlorinated ethylene copolymer cross-linked alloy (Alculine J2060BK, Mitsui / Dupont Polychemical Co., Ltd.) used in Example 1 was subjected to a sliding friction test in the same manner as in Example 1 without adding polyethylene glycol, and a dynamic friction test was performed. The coefficient was measured. Table 1 shows the results. In the case of a chlorinated ethylene copolymer crosslinked alloy in which no lubricant is added, the dynamic friction coefficient is larger than the desired value of 0.4.
[0014]
[Comparative Examples 2 to 7]
The chlorinated ethylene copolymer cross-linked alloy (Mitsui-Dupont Polychemical product Arcrin J2060BK) used in Example 1 was replaced with polyethylene glycol in the form of one or more lubricants shown in Table 1 in the amounts shown in Table 1. It was blended and subjected to a sliding friction test in the same manner as in Example 1 to measure the dynamic friction coefficient. Table 1 shows the results. In each case, the desired kinetic friction coefficient of 0.4 or less was not obtained.
[0015]
[Table 1]
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33879295A JP3599865B2 (en) | 1995-12-26 | 1995-12-26 | Polymer composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33879295A JP3599865B2 (en) | 1995-12-26 | 1995-12-26 | Polymer composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09176409A JPH09176409A (en) | 1997-07-08 |
JP3599865B2 true JP3599865B2 (en) | 2004-12-08 |
Family
ID=18321522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33879295A Expired - Fee Related JP3599865B2 (en) | 1995-12-26 | 1995-12-26 | Polymer composition |
Country Status (1)
Country | Link |
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JP (1) | JP3599865B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1600477A1 (en) * | 2004-05-28 | 2005-11-30 | Total Petrochemicals Research Feluy | Use of thermoplastic composition comprising polyethylene glycol as additive |
-
1995
- 1995-12-26 JP JP33879295A patent/JP3599865B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JPH09176409A (en) | 1997-07-08 |
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