Hot press molding method of meta-aramid thick paper

A thermoforming, aramid fiber technology, applied in the field of meta-aramid thick paper production, can solve the problems of low loss rate, complicated operation steps, unfavorable comprehensive performance, etc., and achieve the effect of low loss rate, simple and efficient operation

Inactive Publication Date: 2020-03-17
ZHUZHOU TIMES FIBER PIONEER MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to aim at the production process of the existing meta-aramid thick paper, generally adopt the mode of meta-aramid base paper to go through multiple times of thermocompression molding, the maximum can only produce the product of 0.76mm thickness; The operation steps are complicated, and The use of multiple hot pressing molding increases the operation process, increases the cost of labor and energy consumption, and causes a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Embodiment one

[0023] A thermoforming method for meta-aramid thick paper, the weight of 5 layers is 20~150g / m 2 The meta-aramid base paper is placed in the five-station unwinding hot-press forming equipment, and the five-station unwinding is directly carried out for a hot-press composite molding; Realize the glass transition at high temperature, soften and melt, wrap the chopped fibers in the meta-aramid base paper and realize the tight bonding between layers to form a meta-aramid thick paper composed of five layers of meta-aramid base paper.

[0024] The described five-station unwinding and direct hot-compression lamination is to quantify the five layers to 20~150g / m 2 The meta-aramid base paper is respectively placed on the five-station unwinding device of the unwinding part of the hot-pressing equipment, unwinded by the five-station unwinding device, and hot-pressed and compounded by the hot-pressing equipment with a preheating device. A meta-aramid thick paper i...

Example Embodiment

[0032] Embodiment two

[0033] The principle of embodiment 2 is the same as that of embodiment 1, but the process is slightly different. It is a method of thermocompression forming of meta-aramid thick paper, and the quantitative value of 7 layers is 50~100g / m 2 The meta-aramid base paper is placed in the seven-station unwinding hot-press forming equipment, and the seven-station unwinding is performed directly for one-time hot-press composite molding; The fiber realizes glass transition at high temperature, softens and melts, wraps the chopped fibers in the meta-aramid base paper and realizes the tight bonding between layers, forming a meta-aramid thick paper composed of multiple layers of meta-aramid base paper.

[0034] The said seven-station unwinding and direct hot-compression compounding is to quantify the seven layers to 50~100g / m 2 The meta-aramid base paper is placed on the seven-station unwinding device of the unwinding part of the hot-pressing equipment, unwinded by...

Example Embodiment

[0042] Embodiment three

[0043] The principle of embodiment 3 is the same as that of embodiment 1, but the process is slightly different. It is a method of thermocompression forming of meta-aramid thick paper, and the quantitative value of the three layers is 80~150g / m 2 The meta-aramid base paper is installed in the three-station unwinding and hot-pressing forming equipment, and the three-station unwinding is directly carried out for one-time hot-pressing composite molding; Realize the glass transition at high temperature, soften and melt, wrap the chopped fibers in the meta-aramid base paper and realize the tight bonding between layers to form a meta-aramid thick paper composed of multiple layers of meta-aramid base paper.

[0044] The said three-station unwinding and direct hot-compression lamination is to make the three layers quantitatively 80~150g / m 2 The meta-aramid base paper is respectively placed on the three-station unwinding device of the unwinding part of the ho...

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Abstract

The invention discloses a hot press molding method of meta-aramid thick paper. Specifically, multiple layers of meta-aramid raw paper with a quantitative amount of 20-150g/m<2> are directly subjectedto one-time hot-pressing composite molding according to multi-station unwinding, glass transition and softening melting are realized at high temperature relying on fibrid in the meta-aramid raw paper,chopped fiber in the meta-aramid raw paper is wrapped to realize interlayer tight combination, thus forming the meta-aramid thick paper compounded by the multiple layers of meta-aramid raw paper. Themethod provided by the invention does not utilize glue compounding nor introduce impurities, adopts pure aramid component, can realize one-time hot-pressing composite molding, also can effectively integrate the characteristic of good uniformity of low-weight aramid paper, and prevents the poor molding evenness of aramid paper from affecting the performance of molded paper. The method provided bythe invention can realize continuous batch production of aramid paper, is simple and efficient, and low in loss rate, and the prepared aramid paper has high uniformity and compact structure.

Description

technical field [0001] The present invention relates to a method for making meta-aramid thick paper, in particular to a method for hot-press forming meta-aramid thick paper. The remaining impurities are introduced into pure aramid fiber components, and one-time hot-press composite molding can be realized; it belongs to the technical field of making meta-aramid fiber thick paper. Background technique [0002] Meta-aramid paper is a kind of aramid paper. Meta-aramid paper has become a kind of high-quality functional fiber due to its excellent high temperature resistance and insulation; the most prominent feature of meta-aramid paper is high temperature resistance , can be used for a long time without aging at a high temperature of 220°C, its electrical and mechanical properties can be maintained for 10 years, and its dimensional stability is excellent, and its thermal shrinkage rate is only 1% at about 250°C; It will not shrink, embrittle, soften or melt when exposed to a hig...

Claims

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Application Information

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IPC IPC(8): D21H27/30B32B29/00B32B37/10
CPCB32B29/00B32B37/10D21H27/30
Inventor 李正胜宋欢陈磊田宗芳黎勇刘兴隆丁娉张明鲍时宽
Owner ZHUZHOU TIMES FIBER PIONEER MATERIAL TECH CO LTD
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