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Non-asbestos stool plate and its making process

A sealing pad, non-asbestos technology, applied in the direction of chemical instruments and methods, other chemical processes, etc., can solve the problems of asbestos sealing pads polluting the environment, etc., to improve mechanical properties and relaxation resistance, easy processing, reduce relaxation effect

Inactive Publication Date: 2004-04-07
烟台铭祥控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention mainly solves the problem that the existing asbestos sealing backing plate pollutes the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1, accurately weigh 4 kg of Twaron fiber, 35 kg of Rs440 fiber, 13 kg of nitrile rubber, 40 kg of calcium carbonate, 2 kg of white carbon black, 1 kg of sulfur, 1 kg of M2, 1 kg of anti-aging J, 4 kg of stearic acid , 8 kilograms of toluene, the nitrile rubber after weighing, white carbon black, sulfur, M, anti-aging agent J, stearic acid, toluene mixed material, stir 45min; Add the Rs440 fiber after weighing again and stir 60min; Add Twaron fiber after weighing and stir for 60 minutes; then proceed to sheeting, first raise the temperature of the large roll of the sheeting machine, when it reaches 100°C, adjust the baffle hanging leather material, hang it fully and hang evenly, then put in large material, and start feeding, After the large material is finished, hang the outer skin material, and then stop the car to cut the board; finally vulcanize, use a vulcanizer to vulcanize, the temperature of the vulcanizer is 120°C, pressurize to 1.0Mpa, and after vulcaniza...

Embodiment 2

[0023] Embodiment 2 is the same as Embodiment 1. Before the sheeting process, 5 kg of ethanol aqueous solution with a concentration of 70% was added and stirred for 35 min.

Embodiment 3

[0024] Example 3, accurately weigh 3 kg of Twaron fiber, 20 kg of Rs440 fiber, 10 kg of nitrile rubber, 38 kg of kaolin, 2 kg of white carbon black, 1 kg of TMTD, 2 kg of DM, 1 kg of BLE, 4 kg of zinc oxide, and 8 kg of toluene , mix the weighed nitrile rubber, white carbon black, TMTD, DM, BLE, zinc oxide, and toluene for 30 minutes; then add the weighed Rs440 fiber and stir for 40 minutes; then add the weighed Twaron fiber and stir 40min; finally add 5 kg of ethanol aqueous solution with a concentration of 80%, and then form a sheet. Firstly, the temperature of the large roller of the sheet forming machine rises. , carry out blanking, after the large material is loaded, hang the outer skin material, and then stop and cut the board; finally vulcanize, use a vulcanizer to vulcanize, the temperature of the vulcanizer is 110 ° C, pressurize 0.5MPa, and after vulcanization for 15 minutes, you can get the vulcanizate of the present invention. Non-asbestos gasket.

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Abstract

The sealing non-asbestos stool plate is produced with the material including Twaron fiber, Rs440 fiber, oil resistant rubber, stuffing, rubber assistant and solvent. The preparation process includes mixing oil resistant rubber, stuffing, rubber assistant and solvent in certain proportion through stirring for 30-60 min, adding Rs440 fiber via stirring for 40-80 min, adding Twaron fiber via stirring for 40-80 min, adding co-volatiling agent solution via stirring for 30-40 min; sheeting and final sulfurizing. The sealing non-asbestos stool plate has no environmental pollution, simple preparation process, and high performance.

Description

(1) Technical field: [0001] The invention relates to the technical field of sealing backing plates, in particular to a non-asbestos sealing backing plate and a preparation method thereof. (two) background technology: [0002] As a non-metallic gasket material, gaskets are widely used in industries such as automobiles, petroleum, chemical industry, electric power, and machinery. The currently used gaskets are asbestos gaskets, but asbestos gaskets have strong environmental pollution. With the enhancement of environmental awareness, the improvement of the living environment has been highly valued by people. In addition, with the rapid development of science and technology, the requirements for the performance of the gasket are becoming more and more stringent. Therefore, a non-asbestos gasket with excellent performance is currently Never seen. (3) Contents of the invention: [0003] The object of the present invention is to overcome the shortcomings of the above-mentioned p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C09K3/10
Inventor 姜寿松乔星耀辛小萍
Owner 烟台铭祥控股有限公司
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