Vulcanized fiber board and manufacturing process thereof

A production process, steel cardboard technology, applied in the direction of paper, papermaking, special paper, etc., can solve the problems of insufficient electrical strength and volume resistance performance, and achieve the effect of improving electrical strength, good shape stability, and short cycle time

Active Publication Date: 2013-05-15
杭州特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrical strength, volume resistance and other properties of traditional stee

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Beating and rinsing: 94kg of refined cotton linter fibers are beaten, the beating degree is 35°SR, the wet weight is 8g, the beating concentration is not less than 3%, and then the pulp obtained by beating is screened, purified and rinsed ;

[0031] (2) Homogenization and papermaking: Mix the rinsed pulp evenly with 6kg of glass fiber to obtain a mixed pulp in which cotton fibers and glass fibers are interlaced and evenly distributed, and then the mixed pulp is made on a paper machine and pressed Dehydration and hot-press drying equipment are used to dry to obtain steel paper base paper, and the moisture content in the base paper is 4%;

[0032] (3) Gelling and aging: Laminate 3 sheets of steel paper base paper obtained in step (2) and send them into a gelling tank filled with a zinc chloride solution with a specific gravity of 1.90 through a paper roll to get raw steel cardboard. Then place the steel paper in the grid of the aging room for aging treatment, the agi...

Embodiment 2

[0037] (1) Beating and rinsing: 95kg of refined cotton linter fibers are beaten, the beating degree is 36°SR, the wet weight is 7.6g, the beating concentration is not less than 3%, and then the pulp obtained by beating is screened, purified and cleaned. rinsing;

[0038] (2) Homogenization and papermaking: Mix the rinsed pulp evenly with 5kg of glass fiber to obtain a mixed pulp in which cotton fibers and glass fibers are interlaced and uniformly distributed, and then the mixed pulp is made on a paper machine and pressed Dehydration and hot-press drying equipment are used to dry to obtain steel paper base paper, and the moisture content in the base paper is 5%;

[0039] (3) Gelling and aging: Laminate 5 steel base papers obtained in step (2) and send them through a paper roller into a gelling tank filled with a zinc chloride solution with a specific gravity of 1.94 to get raw steel cardboard. Then place the raw steel paper in the grid of the aging room for aging treatment, th...

Embodiment 3

[0044] (1) Beating and rinsing: 96kg of refined cotton linter fibers are beaten, the beating degree is 38°SR, the wet weight is 7.2g, the beating concentration is not less than 3%, and then the pulp obtained by beating is screened, purified and cleaned. rinsing;

[0045] (2) Homogenization and papermaking: Mix the rinsed slurry with 3kg of glass fiber evenly to obtain a mixed slurry with interlaced and evenly distributed cotton fibers and glass fibers, then make the mixed slurry on a paper machine, and press Dehydration and hot-press drying equipment are used to dry to obtain steel paper base paper, and the moisture content in the base paper is 6%;

[0046] (3) Gelling and aging: After laminating 6 sheets of steel paper base paper obtained in step (2), they are sent into a gelling tank filled with a zinc chloride solution with a specific gravity of 1.92 through paper rolls to obtain raw steel cardboard. Then place the raw steel paper in the grid of the aging room for aging tr...

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Abstract

The invention relates to a vulcanized fiber board which is prepared from 94%-97% by weight of cotton fiber and 3%-6% by weight of glass fiber. The manufacturing process comprises the following steps: (1) beating and rinsing; (2) homogenating and papermaking; (3) colloidizing and aging; (4) desalting and washing; (5) pre-drying and drying; and (6) calendering and packaging. In comparison with the traditional vulcanized fiber board, the volume resistance of the vulcanized fiber board disclosed by the invention is increased by 50%, the electrical strength is increased by 21%, and the longitudinal and the transverse drying shrinkage rates are respectively reduced by 10% and 19.6%.

Description

technical field [0001] The invention relates to a steel cardboard and a manufacturing process thereof. Background technique [0002] Steel paperboard is made of plant fiber as raw material, which is processed into the steel paper base paper required by the steel paperboard through pulping, and then the steel paper base paper is made after lamination, gelatinization, drying and other processes. The hardness of steel cardboard is similar to that of aluminum but the specific gravity is only half of that of aluminum. It is resistant to high and low temperatures (-40°C~100°C), has excellent electrical insulation and oil resistance, and is widely used in insulating and heat insulating materials. [0003] With the development of the economy, there are more and more categories of new industries, and the requirements for various performances of steel cardboard are also getting higher and higher. The electrical strength, volume resistance and other properties of traditional steel...

Claims

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Application Information

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IPC IPC(8): D21H13/40D21D1/02D21H27/00
Inventor 吴安波
Owner 杭州特种纸业有限公司
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