Polyamide elastomer thermal shrinkable material, polyamide elastomer double-layer material and preparation methods

A polyamide elastomer, polyamide technology, which is applied in the field of preparation of the heat shrinkable material and the double-layer material, can solve the problems of poor oil resistance, chemical resistance, high temperature resistance, wear resistance, etc., and achieve flexural resistance. Good oil resistance, chemical solvent resistance, simple preparation method

Active Publication Date: 2010-01-20
CHANGYUAN ELECTRONICS DONGGUAN +3
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  • Summary
  • 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 resista

Method used

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  • Polyamide elastomer thermal shrinkable material, polyamide elastomer double-layer material and preparation methods
  • Polyamide elastomer thermal shrinkable material, polyamide elastomer double-layer material and preparation methods

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0052] The preparation method of the polyamide elastomer heat shrinkable material of the present invention includes the following steps:

[0053] Step 1: According to the relative weight ratio, mix 0-50 parts of halogen-containing flame retardant, 0-20 parts of flame retardant synergist, 0-3 parts of multifunctional acrylate reactive monomer, 0.5-6 parts of antioxidant, light 0-3 parts of stabilizer and 0-5 parts of masterbatch are fully mixed at room temperature;

[0054] Step 2: Mix the homogeneously mixed material in Step 1 with the relative weight ratio of 100 parts of polyamide elastomer with a twin-screw mixer at a temperature range of 150°C to 250°C, then extrude the strands, cool in water, air dry, and cut grain;

[0055] Step 3: Extrude the above pellets into a tube at a temperature of 150°C-250°C;

[0056] Step 4: The above-mentioned tube is irradiated by γ-ray or electron accelerator, and the radiation dose is 80-250KGY;

[0057] Step 5: Then expand and stretch the above pi...

Example

[0061] Preparation Example 1

[0062] The polyamide elastomer substrate (Vestamid E55-S1, PA12 elastomer, Degussa, Germany) 100Kg and tetrakis[3-(3,5,-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester (anti- Oxygen agent 1010) 6Kg, trimethylolpropane trimethacrylate (TMPTMA) 1.5Kg;

[0063] Mix uniformly at a speed of 60~120rpm in a high mixer, and extrude into a transparent or semi-transparent polyamide elastomer pipe semi-finished product after being kneaded by a twin-screw mixer at a temperature of 190℃. After the electron beam is irradiated with a dose of 150KGY, it is expanded 4 times to become a heat shrinkable tube.

[0064] Its shrinkage performance is shown in the following table: (shrink 3min in 180℃ glycerin pool)

[0065]

Example

[0066] Preparation Example 2

[0067] The polyamide elastomer substrate (Vestamid E47-S1, PA12 elastomer, Degussa, Germany) 100Kg and tetrakis[3-(3,5,-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester (anti- Oxygen agent 1010) 1Kg, trimethylolpropane trimethacrylate (TMPTMA) 3Kg, decabromodiphenylethane 20Kg, antimony trioxide 8Kg, color masterbatch 5Kg;

[0068] Mix well in a high mixer at a speed of 60 to 120 rpm. Then it is mixed by a twin-screw mixer at a temperature of 190°C and extruded into strands, cooled in water, air-dried, and pelletized. It is then extruded into a tube, irradiated by an electron accelerator with 100KGY, and then expanded twice to become a heat shrinkable tube. The measurements are as follows:

[0069]

[0070]

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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, 0-50 parts of halogenated flame retardant, 0-20 parts of flame-retardant synergist, 0-3 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 or a 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 provides a 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, a polyamide elastomer double-layer material made of the material, and a preparation method of the heat-shrinkable material and the double-layer 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...

Claims

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Application Information

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