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Radiation crosslinking chloroprene rubber heat shrinkage material and preparation method thereof

A neoprene rubber, radiation cross-linking technology, applied in other household appliances, applications, household appliances and other directions, can solve the problems of low temperature resistance, oil resistance and poor heat aging performance, achieve good heat aging performance, expand the variety And the scope of application, the effect of good pipe performance

Active Publication Date: 2015-02-04
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 poor low temperature resistance, oil resistance and heat aging resistance of existing polyolefin heat shrinkable materials, and provide a radiation Cross-linked chloroprene rubber heat shrinkable material and preparation method thereof

Method used

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  • Radiation crosslinking chloroprene rubber heat shrinkage material and preparation method thereof
  • Radiation crosslinking chloroprene rubber heat shrinkage material and preparation method thereof
  • Radiation crosslinking chloroprene rubber heat shrinkage material and preparation method thereof

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preparation example Construction

[0047] The preparation method of above-mentioned radiation cross-linked chloroprene rubber heat-shrinkable material comprises the following steps:

[0048] Step 1: Weigh 100 parts of polyolefin substrate, 5-20 parts of neoprene rubber, 5-20 parts of chlorinated polyethylene, 0.5-3 parts of antioxidant, 1-15 parts of plasticizer, color 1-5 parts of masterbatch, fully mixed at room temperature;

[0049] Step 2: After cooling and crushing the uniformly mixed material in step 1, extrude the strands with a twin-screw extruder in the temperature range of 130°C-180°C, water-cool, air-dry, and pelletize;

[0050] Step 3: extruding the above-mentioned pellets into a tube at a temperature of 130°C-180°C;

[0051] Step 4: irradiate the above-mentioned pipes with gamma rays or electron accelerators, and the radiation dose is 80-200KGY;

[0052] Step 5: Then expand and stretch the above-mentioned tube to 0.5-3 times at a temperature of 100-200°C to form a heat-shrinkable tube.

[0053] ...

preparation Embodiment 1

[0056] Take various components according to the table:

[0057] According to the above ratio, mix the above materials evenly in the internal mixer (the mixture is 20kg in total).

[0058]Then extrude the strands through a twin-screw extruder at a temperature of 160°C, water-cool, air-dry, and pelletize.

[0059] It is then extruded into a tube, irradiated by an electron accelerator at 100KGY, and then expanded twice to form a heat-shrinkable tube. The measurements are as follows:

[0060]

preparation Embodiment 2

[0062] Take various components according to the table:

[0063]

[0064] According to the above ratio, mix the above materials evenly in the internal mixer (the mixture is 20kg in total).

[0065] Then extrude the strands through a twin-screw extruder at a temperature of 130°C, water-cool, air-dry, and pelletize.

[0066] It is then extruded into a tube, irradiated by an electron accelerator at 120KGY, and then expanded twice to form a heat-shrinkable tube. The measurements are as follows:

[0067]

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Abstract

The invention discloses a radiation crosslinking chloroprene rubber heat shrinkage material which comprises the following components in parts by weight: 100 parts of polyolefin base material; 5-20 parts of chloroprene rubber; 5-20 parts of chlorinated polyethylene; 0.5-3 parts of antioxygen; 1-15 parts of plasticizer and 1-5 parts of color master batch. The radiation crosslinking chloroprene rubber heat shrinkage material has the advantages of low temperature resistance, oil resistance and thermal aging resistance.

Description

technical field [0001] The invention relates to a heat shrinkable material and a preparation method thereof. Background technique [0002] Heat shrinkable materials are used in a wide range of applications, including insulation and protection of cables in automotive, electronics, construction, and military industries. However, in the occasions where the temperature requirements are low, oil resistance, and heat aging resistance are high, the general polyolefin heat shrinkable materials cannot meet the requirements, and the use effect is relatively poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the problems of poor low temperature resistance, oil resistance and heat aging resistance of existing polyolefin heat shrinkable materials, and provide a radiation Cross-linked chloroprene rubber heat-shrinkable material and its preparation method. [0004] In order to solve the above technical problems, the prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/00C08L23/06C08L23/08C08L11/00C08L23/28C08J3/22B29C69/00B29L23/00
Inventor 袁晓芳莫江宏李欲晓刘晓播邱光南鲁雪莲杨剑松许兰杭
Owner CHANGYUAN ELECTRONICS DONGGUAN
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