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Power cable repairing adhesive tape and preparation method of the same

A technology for power cables and repair tapes, applied in adhesives, film/sheet adhesives, insulators, etc., can solve problems such as interface damage, bonding failure, poor low temperature resistance, etc., and achieve unique cold flow characteristics, The best sealing anti-corrosion, not easy to cure effect

Inactive Publication Date: 2013-06-05
CYG CHANGTONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The surface of the traditional waterproof insulating tape is mostly pressure-sensitive rubber adhesive. Due to its high cohesive strength, the bonding performance to the outer insulation layer of PVC, HDPE and silicone cables is not very good, and the adhesive tape often appears weak. Interfacial damage occurs when peeling off
And its low temperature resistance is not good, and the construction at 0°C often leads to bonding failure, so that the seal fails and water enters, which affects the insulation effect

Method used

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  • Power cable repairing adhesive tape and preparation method of the same
  • Power cable repairing adhesive tape and preparation method of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] By weight percentage, butyl rubber (IIR268) 5%, high molecular weight polyisobutylene (PIB80) 8%; medium molecular weight polyisobutylene (PIB12) 30%; low molecular weight polyisobutylene (PIB) 15%; talcum powder 1250 mesh 40%; Antioxidant (1010) 1%; Phthalocyanine Green 1%.

[0022] The preparation method is as follows: Step A: Plasticize butyl rubber, high molecular weight polyisobutylene and medium molecular weight polyisobutylene, add low molecular weight polyisobutylene, add antioxidant and 1250 mesh talcum powder after mixing uniformly, and obtain Clay, kneader mixing temperature 130 + 15°C, kneading time 1 hour.

[0023] Step B: Transport the uniformly mixed cement to the reactor for secondary mixing through a single screw; the mixing temperature is 110 + 10°C for 0.5 hours.

[0024] Step C: Mix the cement through the reaction kettle and transport it to the discharge port of the extruder through the gear pump, extrude and coat it on the EPDM base material with...

Embodiment 2

[0026] By weight percentage, butyl rubber 10%; high molecular weight polyisobutylene 5%; medium molecular weight polyisobutylene 25%; low molecular weight polyisobutylene 10%; talcum powder 1250 mesh 48%; antioxidant 1010 1%; phthalocyanine green 1%

[0027] The preparation method is as follows: Step A: butyl rubber, high molecular weight polyisobutylene and medium molecular weight polyisobutylene are mixed, then low molecular weight polyisobutylene is added, after mixing evenly, antioxidant and talcum powder are added, after mixing evenly, the cement is obtained, kneaded Machine mixing temperature 130 + 15°C, kneading time 1.5 hours.

[0028] Step B: Transport the uniformly mixed cement to the reactor for secondary mixing through a single screw; the mixing temperature is 110 + 10°C for 0.5 hours.

[0029] Step C: Mix the cement through the reaction kettle and transport it to the discharge port of the extruder through the gear pump, extrude and coat it on the EPDM base mater...

Embodiment 3

[0031] By weight percentage, including: butyl rubber 7%; high molecular weight polyisobutylene 8%; medium molecular weight polyisobutylene 28%; low molecular weight polyisobutylene 10%; light calcium 1250 mesh 46%; antioxidant 1010 0.5%; phthalocyanine green 0.5 %

[0032] The preparation method is as follows: Step A: Mix butyl rubber, high-molecular-weight polyisobutylene and medium-molecular-weight polyisobutylene, then add low-molecular-weight polyisobutylene, add antioxidant and light calcium after mixing uniformly, and obtain cement after mixing uniformly. Kneader mixing temperature 130 + 15°C, kneading time 1 hour.

[0033] Step B: Transport the uniformly mixed cement to the reactor for secondary mixing through a single screw; the mixing temperature is 110 + 10°C for 0.5 hours.

[0034] Step C: Mix the cement through the reaction kettle and transport it to the discharge port of the extruder through the gear pump, extrude and coat it on the EPDM base material with a th...

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Abstract

The invention provides power cable repairing adhesive tape and a preparation method of the power cable repairing adhesive tape. The power cable repairing adhesive tape and the preparation method of the power cable repairing adhesive tape comprise, by weight ratio, 5-10% of butyl rubber, 5-10% of high molecular weight polyisobutene, 25-30% of middle molecular weight polyisobutene, 10-15% of low molecular weight polyisobutene, 40-50% of inorganic reinforcing powder, 0.5-1% of antioxidant 1010 and 0.5-1% of pigment. The repairing adhesive tape adopted by the power cable repairing adhesive tape is polymer which can never be solidified, wherein the repairing adhesive tape not only has ordinary adhesive performance, but also has unique cold flow characteristics, and can realize automatically repairing functions in the anti-erosion and repairing process to achieve the best sealing and anti-erosion effect.

Description

technical field [0001] The invention relates to a power cable repair tape and a preparation method thereof, in particular to a power cable repair tape with a wide temperature resistance range and a preparation method thereof. Background technique [0002] At present, waterproof insulating tape is mainly used for power cable repair, which is a kind of electrical insulation and waterproof sealing tape with self-melting and conformal properties. The thickness of the tape is generally 1.65mm, the tape base is EPDM rubber, and the surface is coated with pressure-sensitive rubber adhesive. Not corrosive. Usually during construction, the tape is stretched first to make it three-quarters of the original width before stretching. After wrapping, it is advisable to squeeze the tape on the covered part by hand so that the layers are tightly attached without air gaps. Achieve bonding. [0003] The surface of the traditional waterproof insulating tape is mostly pressure-sensitive rubbe...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J123/20C09J123/22C09J11/04B29C47/92H01B17/60B29C48/92
CPCB29C48/92B29C48/875B29C2948/92561B29C2948/92704B29C2948/92895
Inventor 陈君朱发德徐焕辉
Owner CYG CHANGTONG NEW MATERIAL
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