Non-asbestos static sealing materials and products thereof

A sealing material and static sealing technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of large pore gap, corrosion of metal parts, low compression, etc., achieve high compression rate and rebound rate, make up for processing Accuracy and effect of improving tensile strength

Inactive Publication Date: 2006-10-11
长春蓝天密封技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the defects of the above materials, such as fiber rubber sheet has low compression, large hole gap, easy to corrode metal parts, and asbestos fiber in asbestos fiber rubber sheet is harmful to human body, it is gradually banned; rubber cork material has low tensile strength, The combination strength of cork and rubber is low, and it is easy to absorb oil and seep oil; PTFE gaskets are prone to cold flow and creep; the compression rate of metal rubber composite gaskets is very low, and the precision requirements for metal parts are high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Material preparation

[0026] (1) Rubber drying: In summer, natural rubber is dried for 24 hours, and nitrile rubber and neoprene do not need to be dried; in winter, natural rubber is dried for 60-72 hours, and nitrile rubber and neoprene are dried for 24-36 hours . The temperature of the drying hole is 50-80°C. The purpose of drying is to remove moisture and basically remove the low-temperature crystalline structure of rubber, which is convenient for rubber mastication.

[0027] (2) Ingredients: According to the formula and process requirements, 0-50 grams of materials are weighed with a balance with an accuracy of 0.2 grams; 50-1000 grams of materials are weighed with a pan scale with an accuracy of 5 grams; A platform scale with an accuracy of 200 grams weighs. Place the weighed materials separately according to the following categories: rubber; auxiliary materials (4kg wollastonite, 4kg kaolin, 4kg fumed silica, 2.8kg barium sulfate), 3.6kg mica, 6.4kg vermicu...

Embodiment 2

[0044] 1. Material preparation

[0045] (1) Rubber drying: In summer, natural rubber is dried for 24 hours, and nitrile rubber and neoprene do not need to be dried; in winter, natural rubber is dried for 60-72 hours, and nitrile rubber and neoprene are dried for 24-36 hours . The temperature of the drying hole is 50-80°C. The purpose of drying is to remove moisture and basically remove the low-temperature crystalline structure of rubber, which is convenient for rubber mastication.

[0046] (2) Ingredients: According to the formula and process requirements, 0-50 grams of materials are weighed with a balance with an accuracy of 0.2 grams; 50-1000 grams of materials are weighed with a pan scale with an accuracy of 5 grams; A platform scale with an accuracy of 200 grams weighs. Place the weighed materials separately according to the following categories: rubber; auxiliary materials (6kg wollastonite, 4kg kaolin, 4kg fumed silica, 2.8kg barium sulfate), 4kg mica, 4.8kg vermiculi...

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PUM

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Abstract

The invention provides a packing material containing no asbestos and its preparing process, wherein the material is prepared from binders, mica, vermiculite, graphite, organic fiber and inorganic fiber, silicon dioxide, porcelain clay, barium sulfate, anti-aging agent, preservative agent and vulcanizing auxiliary agent through calendaring formation.

Description

technical field [0001] The invention discloses an asbestos-free static sealing material and a product thereof, which are used as static sealing gasket materials for internal combustion engines, mechanical equipment, refrigeration equipment and various pipeline flanges, and belong to the technical field of sealing materials. Background technique [0002] At present, the sealing gasket materials for internal combustion engines, mechanical equipment, refrigeration equipment and various pipeline flanges mainly include asbestos fiber rubber sheet, non-asbestos fiber rubber sheet, rubber cork, polytetrafluoroethylene gasket, metal rubber composite gasket, etc. Due to the defects of the above materials, such as fiber rubber sheet has low compression, large hole gap, easy to corrode metal parts, and asbestos fiber in asbestos fiber rubber sheet is harmful to human body, it is gradually banned; rubber cork material has low tensile strength, The combination strength of cork and rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08L9/02C08L9/04C08L11/00C08L7/00C08L83/00C08K7/02
Inventor 李松林娄秀冬
Owner 长春蓝天密封技术开发有限公司
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