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Non-conducting rubber applied to power cable accessories and preparation method of non-conducting rubber

A technology for insulating rubber and power cables, used in rubber insulators, organic insulators, etc., can solve the problems of poor mechanical properties such as tensile strength and tear strength, poor oil and solvent resistance, and poor physical and mechanical properties. Achieving the effect of good dimensional stability, lower production cost and high hygiene level

Active Publication Date: 2014-04-30
SHENZHEN SHENBO NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of silicone rubber such as tensile strength and tear resistance are poor, and its physical and mechanical properties are not as good as most synthetic rubbers at room temperature. Poor, so silicone rubber is not suitable for occasions under normal conditions
However, the existing organic peroxide cross-linked silicone rubber produces white flocculent by-products during vulcanization, which has the disadvantages of corrosive gas and need to be cured at a high temperature of 180°C, which is not only environmentally friendly, consumes energy, but also has poor physical and mechanical properties. Wait

Method used

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  • Non-conducting rubber applied to power cable accessories and preparation method of non-conducting rubber
  • Non-conducting rubber applied to power cable accessories and preparation method of non-conducting rubber
  • Non-conducting rubber applied to power cable accessories and preparation method of non-conducting rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] First weigh methyl vinyl silicone rubber, diphenylsilanediol, methyl silicone oil, fumed silica, titanium dioxide, and hindered amine light stabilizer in proportion;

[0042] Then put the raw materials into the kneader in order: methyl vinyl silicone rubber → diphenylsilanediol → methyl silicone oil → hindered amine light stabilizer → titanium dioxide → fumed white carbon black kneading at room temperature for 40 minutes; Take out the kneaded rubber material, put it into an open mill for mixing, and re-mill it in the form of a triangular bag for 10 minutes to form a block, and then put it into a filter for extrusion and filtration. The stainless steel mesh has three layers, and the pore size of each layer is sequential. 10mm, 50mm, 120mm, masterbatch after extrusion and filtration;

[0043] Put the masterbatch into the open mill for refining, softening, and rolling, and then add gray pigment (mixed uniformly), platinum vulcanizing agent A (mixed uniformly for 10 minutes) ...

Embodiment 2

[0045] Others are the same as in Example 1, the difference is that after the masterbatch is obtained: put 1 / 2 of the masterbatch into the open mill for refining, softening, and roll wrapping, then add → gray pigments are mixed evenly → platinum vulcanizing agent A is mixed for 10 minutes to obtain a uniform A masterbatch;

[0046] Put the other 1 / 2 of the masterbatch into the open mill to knead thoroughly, knead softly, wrap the roll, add platinum vulcanizing agent B and mix for 10 minutes to obtain the B masterbatch evenly;

[0047] A masterbatch and B masterbatch are mixed for 10 minutes evenly, and the sheets (thickness 10mm±2mm) are ready for production.

[0048] Finally, put the mixed rubber into a rubber injection machine equipped with a mold for injection molding, cross-link molding at 110°C / 5min, and take it out to be the product.

[0049] The present invention is compared with traditional silicone rubber performance:

[0050]

[0051]

[0052] It can be seen f...

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Abstract

The invention relates to the technical field of polymer materials, and particularly relates to non-conducting rubber applied to power cable accessories and a preparation method of the non-conducting rubber. The non-conducting rubber comprises the following raw materials by mass percent: 60-80% of methyl vinyl silicone rubber, 0.2-5% of diphenyl silanediol, 1-5% of methyl silicone oil, 10-20% of silicon dioxide, 5-15% of titanium dioxide, 0.3-2% of light stabilizer, 0.1-2% of platinum vulcanizing agent, and 1-5% of pigment. The non-conducting rubber is mainly applied to 10-35kV of separable shielding cable accessories, not only has high insulation resistance and excellent electrical property, but also does not lose the elasticity when being continuously used at -100 DEG C to 180 DEG C, displays excellent deformation property, and simultaneously has good thermal conductivity and hydrophobicity and excellent mechanical property.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an insulating rubber used in power cable accessories and a preparation method thereof, which is used in 10-35kV separable shielded cable accessories. Background technique [0002] Among many synthetic rubbers, silicone rubber is one of the best. It is not only tasteless and non-toxic, but also resistant to severe cold, and has excellent heat resistance, cold resistance, dielectric properties, ozone resistance and atmospheric aging resistance. The outstanding performance of silicone rubber is that it can be used at a wide temperature. (or lower temperature) to +250°C (or higher temperature) for long-term use without losing the original strength and elasticity. Thus making it widely used in modern industry. However, the mechanical properties of silicone rubber such as tensile strength and tear resistance are poor, and its physical and mechanical properties are not as go...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08K13/02C08K3/36C08K3/22C08K3/24C08K5/54H01B3/28
Inventor 兰桂刚陈明波
Owner SHENZHEN SHENBO NEW MATERIALS
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