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Modified silicone rubber heat-shrinkable tube and preparation method thereof

A technology of modified silicon and heat-shrinkable tubes, which is applied in the field of silicone rubber heat-shrinkable tubes, can solve the problems of inadaptability, poor oil resistance and solvent resistance of heat-shrinkable tubes, and achieve good stability.

Inactive Publication Date: 2016-12-14
苏州泰斯拓伟机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The materials used to produce heat shrinkable tubes mainly include polyolefin materials (such as polyvinyl chloride), rubber materials (such as silicone rubber), polyester materials (such as polyethylene terephthalate), etc., although they can be Achieve better flame retardancy and environmental protection performance, but most of the heat shrinkable tubes made of the above materials have poor performance in high temperature resistance (above 150 °C), oil resistance, solvent resistance, etc., and cannot be adapted to automobiles, high-speed trains, The requirements of military industry, aerospace and other industries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Modified silicone rubber heat shrinkable tube.

[0025] (1) Weigh 8 kg of methacryl p-methylphenyl silicone rubber (the mole fraction of propylene group is 5%, and the mole fraction of p-methylphenyl group is 10%), 20 kg of sodium phosphate, nano-active carbonic acid Calcium (particle size is 25 nm) 8 kg, nano-silica (particle size is 10 nm) 8 kg and magnesium stearate 0.5 kg, and added to the vacuum kneader, mixed uniformly at room temperature, and then at 120 ° C Vacuumize for 2 hours to obtain a silicone rubber compound;

[0026] (2) Heat the silicone rubber compound obtained in step (1) to 150°C, then add 100 kg of styrene-butadiene-styrene block copolymer, mix well, take it out and place it on a double-roll mill Squeeze out flakes to obtain flake rubber compound;

[0027] (3) Add 1 kg of dicumyl peroxide to the sheet-shaped rubber compound obtained in step (2), and blend to obtain a sheet-shaped cross-linked rubber compound;

[0028] (4) Extrude the f...

Embodiment 2

[0029] Embodiment 2: Modified silicone rubber heat-shrinkable tube.

[0030] (1) Weigh 15 kg of methacryl-p-methylphenyl silicone rubber (the mole fraction of acryl group is 10%, and the mole fraction of p-methylphenyl group is 20%), 40 kg of sodium phosphate, nano-active carbonic acid Calcium (particle size 100 nm) 30 kg, nano silicon dioxide (particle size 50 nm) 30 kg and magnesium stearate 5 kg were added to a vacuum kneader, mixed uniformly at room temperature, and then heated at 140°C Vacuumize for 2 hours to obtain a silicone rubber compound;

[0031] (2) Heat the silicone rubber compound obtained in step (1) to 150°C, then add 100 kg of styrene-butadiene-styrene block copolymer, mix well, take it out and place it on a double-roll mill Squeeze out flakes to obtain flake rubber compound;

[0032] (3) Add 5 kg of dicumyl peroxide to the sheet-shaped rubber compound obtained in step (2), and blend to obtain a sheet-shaped cross-linked rubber compound;

[0033] (4) Extru...

Embodiment 3

[0034] Embodiment 3: Modified silicone rubber heat shrinkable tube.

[0035] (1) Weigh 9 kg of methacryl p-methylphenyl silicone rubber (the mole fraction of propylene group is 5%, and the mole fraction of p-methylphenyl group is 10%), 25 kg of sodium phosphate, nano-active carbonic acid Calcium (particle size is 25 nm) 10 kg, nano-silicon dioxide (particle size is 10 nm) 10 kg and magnesium stearate 1 kg, and added to the vacuum kneader, mixed uniformly at room temperature, and then at 120 ° C Vacuumize for 0.5 hour to obtain silicone rubber compound;

[0036] (2) Heat the silicone rubber compound obtained in step (1) to 170°C, then add 100 kg of styrene-butadiene-styrene block copolymer, mix well, take it out and place it on a double-roll mill Squeeze out flakes to obtain flake rubber compound;

[0037] (3) Add 2 kg of dicumyl peroxide to the sheet-shaped rubber compound obtained in step (2), and blend to obtain a sheet-shaped cross-linked rubber compound;

[0038] (4) Ex...

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PUM

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Abstract

The invention discloses amodified silicone rubber heat-shrinkable tube and a preparation method thereof. Specifically, the modified silicone rubber heat-shrinkable tube is prepared from, by weight, 100 parts ofblock copolymer, 8-15parts ofsilicone rubber, 20-40 parts of phosphate flame retardant, 8-30 parts ofnano active calcium carbonate, 8-30parts ofnano silicon dioxide, 1-5 parts ofperoxide type crosslinking agent and 0.5-5parts oflubricant. Compared with the prior art, themodified silicone rubber heat-shrinkable tube has very good stability, can toleratethe influence of fuel oil, solvents and high temperature and extremely has a market value.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber heat-shrinkable tubes, and relates to a modified silicone rubber heat-shrinkable tube and a preparation method thereof. Background technique [0002] The materials used to produce heat shrinkable tubes mainly include polyolefin materials (such as polyvinyl chloride), rubber materials (such as silicone rubber), polyester materials (such as polyethylene terephthalate), etc., although they can be Achieve better flame retardancy and environmental protection performance, but most of the heat shrinkable tubes made of the above materials have poor performance in high temperature resistance (above 150 ° C), oil resistance, solvent resistance, etc., and cannot be adapted to automobiles, high-speed trains, The requirements of military industry, aerospace and other industries. Therefore, there is an urgent need to develop a heat-shrinkable tube that can achieve high temperature resistance, oil res...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L83/07C08K13/02C08K3/32C08K3/26C08K3/36C08K5/098C08K5/14
CPCC08L53/02C08K2201/003C08K2201/011C08L2201/02C08L2201/08C08L2203/18C08L2312/00C08L83/04C08K13/02C08K2003/324C08K2003/265C08K3/36C08K5/098C08K5/14
Inventor 周宏敏
Owner 苏州泰斯拓伟机电设备有限公司