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Asbestos-based laminate, manufacturing method and application thereof

A manufacturing method and technology of laminates, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve problems such as lack of performance, achieve excellent self-lubrication and resilience, improve affinity, and resist The effect of peeling and mechanical strength improvement

Active Publication Date: 2015-07-22
STATE NUCLEAR HUAQING BEIJING NUCLEAR POWER TECH R & D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing asbestos-based gaskets do not have these properties

Method used

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  • Asbestos-based laminate, manufacturing method and application thereof
  • Asbestos-based laminate, manufacturing method and application thereof
  • Asbestos-based laminate, manufacturing method and application thereof

Examples

Experimental program
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Effect test

no. 1 approach

[0032] According to a first embodiment of the present invention, it relates to an asbestos-based composite.

[0033] According to the present invention, the longitudinal section of the asbestos-based composite has a layered structure, and at least includes an asbestos fiber-carbon fiber composite layer and graphite powder layers (hereinafter sometimes referred to as "primary graphite powder layer" to distinguish it from the "additional graphite powder layer" described below). Therefore, the asbestos-based composite of the present invention includes at least one asbestos fiber-carbon fiber composite layer and one or two main graphite powder layers. From the perspective of further improving its self-lubricating and resilience properties, it is preferred that the asbestos-based composite includes at least one asbestos fiber-carbon fiber composite layer and two main graphite powder layers, wherein the two main graphite powder layers layers are respectively located on both sides o...

Embodiment 1

[0099] Follow the steps below to manufacture figure 2 Asbestos based gasket of construction shown.

[0100] 1) Cut the asbestos fiber / rubber composite board (1.0mm thick, XB450 produced by Hebei Hengda Sealing Material Co., Ltd.) of appropriate width with a shearing machine, and cut the carbon fiber cloth of the same width (0.3mm thick, Japan Toray T400HB- 6000-40D), the total width of each blank is greater than the length of the L-shaped section;

[0101] 2) Using folding machine according to figure 2 Fold the asbestos fiber / rubber composite board as shown, and press the positioning groove;

[0102] 3) Apply the high-temperature-resistant adhesive (THC-400 type high-temperature-resistant phenolic resin adhesive) evenly on the upper surface of the asbestos fiber / rubber composite board and one surface of the carbon fiber cloth;

[0103] 4) Align and fit the asbestos fiber / rubber composite board and the carbon fiber cloth so that their respective adhesive-coated surfaces fa...

Embodiment 2

[0117] Follow the steps below to manufacture image 3 Asbestos based gasket of construction shown.

[0118] 1. Making a rock-carbon mixed layer

[0119] 1-1. Combine 15 parts by weight of asbestos fiber (grade 5-70 asbestos produced by Dacheng County Tongda Sealing Material Co., Ltd., in line with GB / T8071-2001) and 5 parts by weight of carbon fiber (length 10-30mm, manufactured by Toray Corporation of Japan) T400 general-purpose carbon fiber) were impregnated with KH550 silane coupling agent, and then dried and loosened respectively;

[0120] After dissolving 1-2.20 parts by weight of liquid nitrile rubber (X730 produced by Dezhou Yida Trading Co., Ltd.) in 10 parts by weight of ethyl acetate, add 20 parts by weight of calcium carbonate filler and an appropriate amount of vulcanizing agent and vulcanization accelerator, and then mix To uniformity, obtain the rubber mixture;

[0121] 1-3. Add the asbestos fiber and carbon fiber treated in step 1-1 into the rubber mixture, a...

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Abstract

The invention relates to an asbestos-based laminate suitable for being used as a sealing gasket. The invention also relates to a manufacturing method of the asbestos-based laminate, and an application of the asbestos-based laminate in sealing methods. Compared with asbestos-based products in the prior art, the asbestos-based laminate disclosed in the invention has basically equal sealing and heat insulation performances, and has the advantages of great reduction of the use amount of asbestos, and excellent self-lubrication property and resilience.

Description

technical field [0001] The invention relates to an asbestos-based composite body, in particular to an asbestos-based composite body suitable for use as a (high temperature resistant) sealing gasket. The present invention also relates to a manufacturing method of the asbestos-based composite body and its application in a sealing method (such as high temperature resistant sealing, especially high temperature resistant static sealing). Background technique [0002] Seals (such as high temperature resistant seals, especially high temperature resistant static seals) have a wide range of demands in the fields of chemical industry, fluid machinery, electric power and thermal hydraulic tests. For this reason, researchers at home and abroad have developed a variety of high-temperature resistant gaskets, among which asbestos-based gaskets are the most widely used. [0003] Asbestos-based sealing gaskets are made of asbestos fiber / rubber composite boards, and a large amount of asbesto...

Claims

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Application Information

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IPC IPC(8): B32B9/04B32B3/12B32B15/14B32B19/08F16J15/00
Inventor 陆维胡腾赵宇峰张明杨胜薛艳芳
Owner STATE NUCLEAR HUAQING BEIJING NUCLEAR POWER TECH R & D CENT
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