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Low-fiber-content high-filler-content sealing pad

A technology for sealing pads and inorganic fillers, applied in fiber raw material processing, non-polymer organic compound addition, synthetic cellulose/non-cellulose material pulp/paper, etc., can solve non-asbestos-free materials, breaking or damage, Problems such as the use of too many fibers, to achieve the effect of good liquid resistance, simple formula, and cheap raw materials

Inactive Publication Date: 2011-09-14
姚家祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also the problems of high raw material prices and excessive fiber consumption, and sepiolite is an asbestos-like fiber, not a completely asbestos-free material
[0010] The Chinese invention patent application with the publication number CN1847355A discloses a non-asbestos fiber sealing material and its preparation method. The disadvantage of this method is that more than 5 kinds of fibers are used at the same time, and they are put together for soaking, wheel grinding, and disc grinding. , beating
As far as the existing technology is concerned, simply reducing the amount of fiber will often be broken or damaged during production, which is also one of the reasons why fiber is generally used in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Weigh separately

[0029]

[0030] Add 1000Kg of 3.2% consistency pulp suspension, then add a part of the slurry pre-milled with 6Kg of carbon black, 1.2Kg of zinc oxide, 1.2Kg of sulfur, 0.8Kg of accelerator TMTD, 0.4Kg of antioxidant D, and stir well. , While stirring, add 45Kg of latex with 40% solid content; add 15Kg of titanate, stir and mix, and dilute with water to make a slurry with a concentration of 2.5%, which is copied by a paper machine, dehydrated, dried, and calendered and cured at 130°C. Made into low-fiber high-filling gasket board.

Embodiment 2

[0031] Example 2: Weigh separately

[0032]

[0033] Add 1400Kg of 3.2% concentration pulp suspension, then add 4Kg of carbon black, 1.2Kg of zinc oxide, 1.2Kg of sulfur, 0.8Kg of accelerator TMTD, 0.4Kg of anti-aging agent D, and add a portion of the slurry pre-milled. , While stirring, add 35Kg of latex with 40% solid content; add 12Kg of titanate, stir and mix, and dilute with water to make a slurry with a concentration of 2.5%, which is copied by a paper machine, dehydrated, dried, and calendered and cured at 130°C. Made into low-fiber high-filling gasket board

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Abstract

The invention relates to a low-fiber-content high-filler-content sealing pad which is free of asbestos and has the characteristics of liquid resistance, temperature resistance and low burning loss. The low-fiber-content high-filler-content sealing pad is prepared by the following steps: preparing a water suspension slurry from paper pulp, inorganic filler, latex, rubber ingredient and material structure reinforcer, forming by a handsheet former, dewatering, drying, calendering and vulcanizing. The slurry treated by the handsheet former is prepared from the following materials in percentage bymass: 7-20% of paper pulp, 65-85% of inorganic filler, 4-10% of latex and rubber ingredient, and 0.1-5% of material structure reinforcer. The low-fiber-content high-filler-content sealing pad has theadvantages of high universality, simple formula, cheap and accessible raw materials, simple proportioning technique and strong cost price advantage.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of sealing materials, and particularly relates to a sealing backing plate that does not contain asbestos and has the characteristics of liquid resistance, temperature resistance and low loss on ignition. Background technique: [0002] The gasket plate used as a plane seal in the sealing material is divided into two categories: roll plate and copy plate due to different production processes, and is divided into asbestos board and non-asbestos board due to whether the raw material contains asbestos. Although my country’s current sealing market is still dominated by asbestos sheets, as people pay more attention to environmental protection, it is imperative to make sealing materials non-asbestos. However, looking at the published patent application documents and the market understood over the years In fact, there are still shortcomings in the technical field of asbestos-free copy board technology, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10D21H13/26D21H21/18D21H17/05D21H17/67
Inventor 姚家祥姚天悦
Owner 姚家祥
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