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Preparation method of asbestos latex sheet

A technology for latex copying board and asbestos, which is applied in fiberboard, textiles, papermaking, papermaking, etc. It can solve the problems of backward production technology, unfamiliarity, and limited use range, etc., and achieve the effect of improving product strength and strength

Inactive Publication Date: 2008-06-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of asbestos latex sheet is an interdisciplinary subject between the rubber industry and the paper industry. Since the production method of this product is converted from the mixing molding method to the paper making method, the production of this type of product in my country is still under the jurisdiction of the building materials industry. The building material industry is very unfamiliar with the papermaking process, which leads to its backward production process and generally low product quality, especially in terms of strength. Compared with foreign products, there is a big gap. Therefore, the scope of use of such products in China is greatly limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: first the asbestos fiber is stirred and dispersed so that the mass concentration of the asbestos fiber in water is 1%, after beating, adding calcium carbonate relative to the mass percentage of the asbestos fiber in water and 30% relative to the mass percentage of the asbestos fiber % of carbon black is made into a mixed solution, and the mass percentage concentration of the mixed solution is controlled to be 40%; followed by adding 2% styrene-butadiene latex, 30% sulfur and 0.01% diaryl latex relative to the fiber mass percentage in the mixed solution Mix the secondary amines evenly; finally add 10% silane coupling agent relative to the dry weight of asbestos or non-asbestos fibers in the mixed solution and mix evenly, adjust the pH value of the mixed solution to 7.5 with caustic soda or sodium carbonate , then add sodium fluoride that is 4% relative to the asbestos or non-asbestos fiber quality, mix evenly, pass through the flow delivery system of the pap...

Embodiment 2

[0008] Embodiment 2: First, the asbestos fiber is stirred and dispersed so that the mass concentration of the asbestos fiber in water is 40%, and then adding relative to the asbestos fiber mass percentage is 70% attapulgite powder and relative to the fiber mass percentage is 1% carbon black After beating, the mixed solution is made, and the mass percentage concentration of the mixed solution is controlled to be 20%; followed by adding 25% acrylic latex, 6% morpholine disulfide and 0.2% thiobissulfide relative to the fiber mass percentage in the mixed solution. Substitute phenol and mix evenly; finally add 0.01% silane crosslinking agent relative to the absolute dry weight of asbestos or non-asbestos fibers in the mixed solution and mix evenly, adjust the pH value of the mixed solution to 8.0 with caustic soda or sodium carbonate , and then add 1% sodium fluoride relative to the mass of asbestos or non-asbestos fibers, mix evenly, pass through the flow delivery system of the pap...

Embodiment 3

[0009] Embodiment 3: First, stir and disperse the carbon fiber so that the mass concentration of the carbon fiber in water is 65%, and after beating, add 1% calcium carbonate relative to the carbon fiber mass percentage and 60% carbon black relative to the carbon fiber mass percentage in the water Make a mixed solution, control the mass percent concentration of the mixed solution to be 2.5%; secondly, add 18% nitrile latex, 23% hexamethylenediamine and 8% benzoimidazole to the mixed solution relative to the carbon fiber mass percent and mix evenly Finally, add the titanate coupling agent that is 6% relative to the mass percentage of carbon fiber absolute dry weight in the mixed solution and mix evenly, adjust the pH value of the mixed solution with caustic soda or sodium carbonate to be 8.2, then add relative to asbestos or Sodium fluoride with non-asbestos fiber quality of 0.01% is uniformly mixed and passed through the flow delivery system of the paper machine, and then forme...

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PUM

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Abstract

The invention discloses a method for preparing asbestos or non-asbestos latex copy plate, which comprises: first, mixing and dispersing asbestos or non-asbestos fiber to be beaten, and adding calcium carbonate or convex-concave rod powder and carbon black into water, or first adding calcium carbonate or convex-concave rod powder and carbon black before beating; adding latex, sulfuration agent and anti-aging agent into mixture; at last, adding silicane coupler, silicane cross-linker, or titanic acid ester coupler into mixture; using caustic soda or sodium carbonate to adjust the pH valve of mixture to 7.5-8.5; adding sodium fluoride; feeding the mixture via the feeding system of paper maker, to be molded and dried to attain asbestos or non-asbestos latex copy plate. The invention adds silicane coupler, silicane ross-linker or titanic acid ester, and sodium fluoride into slurring beating process, to significantly improve the strength of product.

Description

technical field [0001] The invention belongs to the intersecting fields of rubber industry and papermaking industry, and particularly relates to a preparation process of asbestos latex scissor board. Background technique [0002] The traditional asbestos rubber sheet is mainly produced by mixing and molding process (therefore, its product is also called asbestos rubber sheet), that is, the rubber adhesive needs to be dissolved in an organic solvent, and then mixed with asbestos fibers, other compounding agents and fillers. It is made into a material, and then rolled by a double-roller sheeting machine to make a sealing sheet. Due to the large energy consumption, large pollution and low efficiency, this method has been basically eliminated in western developed countries, and has basically turned to papermaking production (its product is called asbestos latex copy board or asbestos latex copy board). Asbestos fibers are dispersed in water, then beating, filling, glue and vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21J1/16
Inventor 夏新兴马娜王建任涛池东明陆赵情修慧娟
Owner SHAANXI UNIV OF SCI & TECH
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