Polyamide elastomer thermal shrinkable material, polyamide elastomer double-layer material

A technology of polyamide elastomer and polyamide, applied in the direction of film/sheet adhesives, adhesives, etc., can solve the problems of poor oil and chemical resistance, high temperature resistance, and wear resistance, etc., and achieve flexural resistance Good, good oil resistance and chemical solvent resistance, simple preparation method

Active Publication Date: 2012-05-09
CHANGYUAN ELECTRONICS DONGGUAN +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problems of existing conventional polyolefin heat-shrinkable materials such as low temperature resistance, poor oil resistance and chemical resistance, low strength, and non-abrasion resistance, and provide a high temperature resistance, oil resistance and chemical resistance. Polyamide elastomer heat-shrinkable material with high strength and simple wear-resistant preparation method and polyamide elastomer double-layer material made of the heat-shrinkable material

Method used

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  • Polyamide elastomer thermal shrinkable material, polyamide elastomer double-layer material
  • Polyamide elastomer thermal shrinkable material, polyamide elastomer double-layer material

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preparation example Construction

[0041] The preparation method of polyamide elastomer heat-shrinkable material of the present invention comprises the following steps:

[0042] Step 1: According to the relative weight ratio, mix 0-50 parts of halogen-containing flame retardant, 0-20 parts of flame retardant synergist, 1.5-3 parts of multifunctional acrylate reaction monomer, 0.5-6 parts of antioxidant, light 0-3 parts of stabilizer and 0-5 parts of color masterbatch are fully mixed at room temperature;

[0043] Step 2: Mix the material uniformly mixed in step 1 with the polyamide elastomer with a relative weight ratio of 100 parts in a twin-screw mixer in the temperature range of 150°C-250°C, then extrude the strands, water-cool, air-dry, cut grain;

[0044] Step 3: extruding the above-mentioned pellets into a tube at a temperature of 150°C-250°C;

[0045] Step 4: irradiate the above-mentioned pipes with gamma rays or electron accelerators, and the radiation dose is 80-250KGY;

[0046] Step 5: Then expand a...

preparation Embodiment 1

[0051] Polyamide elastomer substrate (Vestamid E55-S1, PA12 elastomer, German Degussa company) 100Kg and tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (antioxidant Agent 1010) 6Kg, trimethylolpropane trimethacrylate (TMPTMA) 1.5Kg;

[0052] Mix evenly in a high-speed mixer at a speed of 60 to 120rpm, and extrude into transparent or translucent polyamide elastomer pipe semi-finished products after mixing by a twin-screw mixer at a temperature of 190°C. After the electron beam is irradiated with a dose of 150KGY, it is expanded by 4 times to become a heat-shrinkable tube.

[0053] Its shrinkage performance is shown in the following table: (shrink in a glycerin pool at 180°C for 3 minutes)

[0054] inner diameter(mm)

preparation Embodiment 2

[0056] Polyamide elastomer substrate (Vestamid E47-S1, PA12elastomer, Germany Degussa company) 100Kg and tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester (antioxidant 1010) 1Kg, trimethylolpropane trimethacrylate (TMPTMA) 3Kg, decabromodiphenylethane 20Kg, antimony trioxide 8Kg, masterbatch 5Kg;

[0057] Mix well at a speed of 60-120rpm in a high-speed mixer. Then, at a temperature of 190° C., the strands are extruded after kneading by a twin-screw kneader, water-cooled, air-dried, and pelletized. It is then extruded into a tube, irradiated by an electron accelerator at 100KGY, and then expanded twice to become a heat-shrinkable tube. The measurements are as follows:

[0058]

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Abstract

The invention relates to a polyamide (commonly called nylon) elastomer thermal shrinkable material which comprises the following components by weight part: 100 parts of polyamide elastomer, 0.5-6 parts of antioxidant, 20-50 parts of halogenated flame retardant, 8-20 parts of flame-retardant synergist, 1.5-3 parts of polyfunctional acrylic ester reaction monomer, 0-3 parts of light stabilizer and 0-5 parts of color master batch, wherein the polyamide material is a segmental type segmented copolymer which uses polyamide as hard segments and polyether as soft segments; and the antioxidant is one ora compound of more of an amine antioxidant, a phenol antioxidant and an ester antioxidant. The polyamide elastomer thermal shrinkable material has good thermal ageing resistance, high temperature resistance and oil resistivity and also has the characteristics of excellent mechanical property, strong toughness, good wear-resisting property and simple preparation method. The invention also providesa polyamide elastomer double-layer material made of the thermal shrinkable material and preparation methods of the two materials.

Description

technical field [0001] The invention relates to a radiation-crosslinked polyamide elastomer heat-shrinkable material and a polyamide elastomer double-layer material made of the material. Background technique [0002] Heat-shrinkable materials are used in a wide range of applications, including insulation and protection of cables in aerospace, aviation, locomotives, and military industries. In specific use environments, such as places with high temperature requirements, high requirements for oil resistance and chemical resistance, and high requirements for mechanical strength and wear resistance, the effect of conventional polyolefin heat shrinkable materials is relatively poor, so it is necessary to develop special heat shrinkable materials. shrinkage materials and their products. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the problems of existing conventional polyolefin heat-shrinkable materials such as l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C55/22B29C69/02C08K5/134B29C71/04B29C47/06C09J177/00C09J167/00B29C47/92C09J7/02C08L77/00B29C48/92
Inventor 刘军麦家星鲁尔兵文磊鲁雪莲
Owner CHANGYUAN ELECTRONICS DONGGUAN
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