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Co-extrusion type water-air sealing composite conductive rubber strip

A technology of composite conductive and rubber strips, applied in other chemical processes, chemical instruments and methods, etc.

Inactive Publication Date: 2016-04-20
NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art, a co-extruded water-air-sealed composite conductive rubber strip is provided to meet the special requirements of coastal and deep-sea operation equipment for electromagnetic sealing strips

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh the raw materials of the conductive part and the non-conductive part according to the formula, wherein the material formula of the conductive part is 100 parts of silicone rubber, 248 parts of glass silver-plated powder, 0.62 parts of hydroxyl silicone oil, 1.31 parts of vulcanizing agent, and 0.62 parts of vulcanizing agent B; The material formula of the non-conductive part is 100 parts of silicone rubber, 0.41 parts of hydroxyl silicone oil, 0.58 parts of vulcanizing agent A, and 0.52 parts of vulcanizing agent B. Use a rubber mixer to carry out mixing separately, and after mixing evenly, feed them into the barrel of the extruder separately, use cooling water to control the temperature of the barrel at 10°C-25°C, adjust the extrusion speed to less than 50m / h, two extruders The extruding speed of the exit machine should be matched so that it can be co-extruded to form a composite conductive rubber strip. After forming, it enters the vulcanization channel for 160°C...

Embodiment 2

[0023] Weigh the raw materials of the conductive part and the non-conductive part according to the formula, wherein the material formula of the conductive part is 100 parts of silicone rubber, 268 parts of aluminum silver-plated powder, 0.56 parts of hydroxyl silicone oil, 1.28 parts of vulcanizing agent A, and 0.665 parts of vulcanizing agent B; The material formula of the non-conductive part is 100 parts of silicone rubber, 0.42 parts of hydroxyl silicone oil, 0.58 parts of vulcanizing agent A, and 0.48 parts of vulcanizing agent B. Use a rubber mixer to carry out mixing separately, and after mixing evenly, feed them into the barrel of the extruder separately, use cooling water to control the temperature of the barrel at 10°C-25°C, adjust the extrusion speed to less than 50m / h, two extruders The extruding speed of the exit machine should be matched so that it can be co-extruded to form a composite conductive rubber strip. After forming, it enters the vulcanization channel for...

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PUM

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Abstract

The invention relates to a co-extrusion type water-air sealing composite conductive rubber strip and belongs to the technical field of composite conductive rubber strips. The co-extrusion type water-air sealing composite conductive rubber strip meets the special demand of coastal and deep-sea equipment for an electromagnetic sealing strip and comprises a conductive part and a non-conductive part, wherein the conductive part and the non-conductive part can constitute a solid composite conductive rubber strip or a hollow composite conductive rubber strip; raw materials of the conductive part and the non-conductive part are weighed according to a formula and are subjected to mixing by a rubber mixing mill, the uniformly mixed materials are fed into extruder cylinders respectively, the temperature of each cylinder is controlled in a range from 10 DEG C to 25 DEG C by the aid of cooling water, the extrusion speeds are adjusted to be lower than 50 m / h, the extrusion speeds of two extruders are matched with each other, so that the extruders are matched to enable the composite conductive rubber strip to be co-extruded and formed, and the formed composite conductive rubber strip enters a vulcanization channel for shaping at the temperature of 160-200 DEG C and then is subjected to winding arrangement and check. The invention is mainly applied to composite rubber strip production.

Description

technical field [0001] The invention relates to a co-extruded water-air-seal composite conductive rubber strip, which belongs to the technical field of composite conductive rubber strips. Background technique [0002] At present, the water and gas sealing strips widely used in coastal operation equipment are mainly high-temperature-resistant silicone rubber gaskets. In order to reduce electromagnetic interference between equipment, some equipment adopts conductive rubber sealing gaskets. Ordinary conductive rubber gaskets include molded type and extruded type. The related single-extruded conductive rubber strip is mainly used in a non-salt spray pollution-friendly working environment. It has good electromagnetic sealing performance and can meet Most furnishing applications require. However, ships that work in coastal or deep sea for a long time have higher requirements for conductive rubber seals, including: water-air tightness, salt spray corrosion resistance, mildew resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/06C08K9/02C08K3/08C08K3/40C09K3/10
CPCC08L83/04C08L2201/14C08L2205/02C09K3/10C09K2003/1084C08L83/06C08K9/02C08K3/08C08K3/40
Inventor 任圣平王晓明王东红张锐李彦奎杨晓炯王胜利卫云霄刘帆张瀚文
Owner NO 33 RES INST OF CHINA ELECTRONICS TECHNOOGY GRP