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Reinforced type silicon rubber self-adhesion insulated rubber tape

A technology of insulating tape and silicone rubber, which is applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of unprolonged service life, damage to insulating coils, loss of viscosity of the tape, etc., to achieve improved leakage resistance, Enhanced strength and tight wrapping effect

Inactive Publication Date: 2013-03-13
吴孟怀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are two main types of self-adhesive insulating tapes, one is a high-voltage insulating rubber tape made of two kinds of rubber sheets, which is divided into an elastic insulating layer and an adhesive layer, and the other is mainly made of butyl rubber. Self-adhesive rubber tapes made of these two types of tapes are prone to hardening and loss of viscosity in long-term high-temperature environments. The pure silicone rubber insulating tapes that appear at present can withstand high temperatures in a short period of time, but as time increases, its insulation level will decline. , which leads to damage to the insulating coil, so the service life cannot be extended. In some environments with high working temperature, the existing insulating tape cannot meet the requirements.

Method used

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  • Reinforced type silicon rubber self-adhesion insulated rubber tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Take 30kg of 110 methyl vinyl silicone rubber, 10kg of fumed silica, 5kg of silicon boron tackifier, 0.5kg of bis-pentasulfurizing agent, and 0.2kg of iron red colorant, and mix the above-mentioned raw materials into the open-type Knead in the mixer, put it into the melt glue box to make glue, and apply it to both sides of the cotton fiber cloth, such as figure 1 As shown, the warp direction of the cotton fiber cloth is S-shaped bending, the stretching amount along the warp 1 direction is large, and the deformation along the weft 2 direction is small. Then, enter the microwave vulcanization device for vulcanization, and finally crimp and cut.

Embodiment 2

[0016] Get 60kg of 110-2 methyl vinyl silicone rubber, 25kg of fumed silica, 20kg of silicon boron tackifier, 0.5kg of dry sand yellow colorant, 5kg of hydroxyl silicone oil softener, and 5kg of bis-pentasulfurizing agent. Mix it into an open mixer at a temperature below 80°C for kneading, put it into a melt box to make glue, apply it to both sides of the cotton fiber cloth, and then enter a microwave vulcanization device for vulcanization, then crimp and cut.

Embodiment 3

[0018] Get 45kg of 107 methyl vinyl silicone rubber, 18kg of fumed silica, 12kg of silicon boron tackifier, 2.5kg of hydroxy silicone oil softener, 0.35kg of iron red coloring agent, 3kg of double dipentasulfurizing agent, and mix the above-mentioned raw materials at 80 Mix it below ℃ and put it into an open mixer for kneading, put it into the melt box to make glue, apply it to both sides of the cotton fiber cloth with S-shaped bending in the warp direction, and then enter the microwave vulcanization device for vulcanization, then crimp and cut .

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Abstract

The invention discloses a reinforced type silicon rubber self-adhesion insulated rubber tape. Cotton fiber cloth is taken as a base material and adhesive layers are respectively coated on upper and lower faces. Each adhesive layer comprises the following materials in parts by weight: 30-60 parts of silicon rubber, 10-25 parts of gas-phase white carbon black, 0-5 parts of silicone oil softening agent, 5-20 parts of silicon-boron tackifier, 0.2-0.5 part of coloring agent and 0.5-5 parts of vulcanizing agent. According to the reinforced type silicon rubber self-adhesion insulated rubber tape, the breaking strength is more than or equal to 5 MPa and the definite elongation strength is more than or equal to 3 MPa; when the reinforced type silicon rubber self-adhesion insulated rubber tape is used for an insulating, sealing and winding process of various cable connectors under 35 kV or below, the safety operation capability, the anti-cracking capability, the anti-fouling capability and the wear-resisting capability of cables are improved, the winding is more tight and the sealing waterproof effect is better; and the use is safe and reliable at a temperature rangoffing from -40 DEG C to 260 DEG C, and the anti-current-leakage capability is further improved.

Description

technical field [0001] The invention relates to an electric insulating material, in particular to a silicone rubber self-adhesive insulating tape for cable joints. Background technique [0002] At present, there are two main types of self-adhesive insulating tapes, one is a high-voltage insulating rubber tape made of two kinds of rubber sheets, which is divided into an elastic insulating layer and an adhesive layer, and the other is mainly made of butyl rubber. Self-adhesive rubber tapes made of these two types of tapes are prone to hardening and loss of viscosity in long-term high-temperature environments. The pure silicone rubber insulating tapes that appear at present can withstand high temperatures in a short period of time, but as time increases, its insulation level will decline. , resulting in damage to the insulating coil, so the service life cannot be extended. In some environments with high working temperature, the existing insulating tape cannot meet the requireme...

Claims

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Application Information

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IPC IPC(8): C09J7/04C09J183/04C09J183/07C09J11/04C09J11/08C09J11/06
Inventor 吴孟怀
Owner 吴孟怀
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