Crack-resistant silicone rubber cable sheath material and preparation method thereof

A technology of cable sheath and silicone rubber, which is applied in the field of crack-resistant silicone rubber cable sheath material and its preparation, can solve the problems of shortening the service life of cable sheath material, unsatisfactory cable flame retardancy, and low mechanical properties. Achieve the effects of avoiding the decline of mechanical properties, enhancing the conductivity and antistatic properties, and having good compatibility

Active Publication Date: 2021-07-30
宁波金三湖科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silicone rubber itself will continue to burn when exposed to open flames, and the cables made of it have unsatisfactory flame retardancy, which limits its application in various fields of the national economy, especially in occasions with special requirements for flame retardancy. often need to be modified
[0004] Methyl vinyl silicone rubber has good high and low temperature resistance, corrosion resistance, oil resistance, solvent resistance, etc., and has good compression set resistance, low compression set, and good support at high temperatures, so it can be used as The raw material of the cable sheath material is used, but the mechanical properties of methyl vinyl silicone rubber are low, and the crack resistance is low, which will greatly shorten the service life of the cable sheath material

Method used

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  • Crack-resistant silicone rubber cable sheath material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of flame retardant reinforcing agent comprises the following steps:

[0028] 1) Calculated in parts by weight, weigh 40 parts of hydrotalcite powder, 25 parts of slag, 10 parts of nano silicon dioxide, 3 parts of carboxymethyl cellulose and 0.6 parts of coupling agent KH5600 for later use;

[0029] 2) Firstly, adding hydrotalcite powder, slag, nano silicon dioxide and carboxymethyl cellulose into dimethylacetamide for stirring and dispersing to obtain a dispersion;

[0030] 3) Warm up the dispersion in step 2) to 85°C, add coupling agent KH560, stir and mix well, keep it warm for 3 hours, and then cool down to room temperature.

Embodiment 2

[0032] The preparation method of flame retardant reinforcing agent comprises the following steps:

[0033] 1) Calculated according to parts by weight, weigh 50 parts of hydrotalcite powder, 15 parts of slag, 15 parts of nano silicon dioxide, 6 parts of carboxymethyl cellulose and 1.8 parts of coupling agent KH570 for later use;

[0034] 2) Firstly, adding hydrotalcite powder, slag, nano silicon dioxide and carboxymethyl cellulose into dimethylacetamide for stirring and dispersing to obtain a dispersion;

[0035] 3) Warm up the dispersion liquid in step 2) to 75°C, add coupling agent KH570, stir and mix well, keep it warm for 4 hours, and then cool down to room temperature.

Embodiment 3

[0037] A kind of anti-cracking silicone rubber cable sheath material, comprising the following raw materials:

[0038] 70 parts of methyl vinyl silicone rubber, 17 parts of hydrogenated nitrile rubber, 19 parts of chlorinated polyethylene, 5 parts of ethoxylated trimethylolpropane triacrylate, 2 parts of tetramethylthiuram disulfide, paraffin wax 6 parts, 0.6 parts of antiaging agent RD, 12 parts of plasticizer, 4 parts of polyethylene wax, 12 parts of carbon black, 7 parts of silicon micropowder, 8 parts of flame retardant reinforcing agent of embodiment 1 and 6 parts of slag. The plasticizer is a mixture of dibutyl phthalate and polyether silicone oil.

[0039] Preparation method of anti-crack silicone rubber cable sheath material:

[0040] 1) Weigh methyl vinyl silicone rubber, hydrogenated nitrile rubber, chlorinated polyethylene, ethoxylated trimethylolpropane triacrylate, tetramethylthiuram disulfide, paraffin, anti-aging Agent RD, plasticizer, polyethylene wax, carbon...

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Abstract

The invention proposes a crack-resistant silicone rubber cable sheath material, which includes the following raw materials: methyl vinyl silicone rubber, hydrogenated nitrile rubber, chlorinated polyethylene, vulcanizing agent, accelerator, paraffin, anti-aging agent RD, Plasticizer, lubricant, carbon black, silicon micropowder, flame retardant reinforcing agent and filler; the plasticizer is composed of dibutyl phthalate and polyether silicone oil, and the flame retardant reinforcing agent is mainly composed of It is prepared from slag, nano silicon dioxide, carboxymethyl cellulose and coupling agent. Preparation method: Put the above-mentioned raw materials into the internal mixer for internal mixing, and then transfer to the open mill for thinning and rolling, put the thinned film into the three-roller sheeting machine for rolling and cutting, and open the cooling drum Cooling water, pass the cut film through the cooling drum, and then through the isolation powder tank to make a film. The anti-crack silicone rubber cable sheath material not only has good flame retardant and environmental protection performance, but also has excellent tensile strength and crack resistance.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a crack-resistant silicone rubber cable sheath material and a preparation method thereof. Background technique [0002] In recent years, a number of domestic cable manufacturers have carried out research and development, and have produced wind power cables with low temperature resistance, UV resistance, oil resistance, and torsion resistance, which have become a new economic growth point for enterprises. In recent years, all walks of life are promoting safety and environmental protection, and of course the wire and cable industry is no exception. [0003] Silicone rubber is a kind of cross-linkable and curable polymer elastomer with Si-O bond as the main chain and organic groups (such as methyl, vinyl, phenyl, etc.) connected to Si atoms as side chains. Because silicone rubber has excellent high and low temperature resistance and anti-aging properties, it can be used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L15/00C08L23/28C08L1/28C08K13/08C08K9/06C08K3/34C08K3/36C08K11/00C08K3/04C08K5/103C08K5/14H01B3/28
CPCC08K2201/011C08L83/04C08L2201/02C08L2201/04C08L2201/08C08L2203/202C08L2205/035H01B3/28C08L15/005C08L23/286C08L1/286C08K13/08C08K9/06C08K3/34C08K3/36C08K11/005C08K3/04C08K5/103C08K5/14
Inventor 汪泽维
Owner 宁波金三湖科技有限公司
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