High-strength aramid paper and method for preparing same through dissolving and re-pressing self-reinforcing

A high-strength, high-strength paper technology, applied in paper, papermaking, paper post-processing, etc., can solve the problems of low insulation performance and poor physical performance of aramid paper, and achieve the effect of enhancing strength, improving physical performance and insulation performance

Active Publication Date: 2016-11-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to overcome the problems of poor physical properties and low insulating properties of aramid paper in the prior art, and to provide a preparation method of aramid paper with short production time, good physical properties and high insulating properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing high-strength aramid paper by dissolving and repressing self-reinforcement, comprising the following steps and process conditions:

[0034] (1) processing of polyphenylene sulfide fiber: soak polyphenylene sulfide fiber in the saturated solution of sodium hydroxide for 80 minutes;

[0035] (2) Papermaking: first mix the polyphenylene sulfide fiber, aramid fiber and aramid pulp processed in step (1) according to the mass ratio of 3:2:3, and then decompose, adding relative raw materials with a mass ratio of 1:1000 polyethylene oxide is used as a dispersant, and then the base paper is made, and the weight of the base paper after copying is controlled to be 60g / m 2 ; The total mass of raw materials includes the mass of polyphenylene sulfide fiber, aramid fiber and aramid pulp.

[0036] (3) paper drying: in terms of mass percentage, the base paper made in step (2) is dried with microwaves until the moisture content is lower than 8%;

[0037] (4) Impr...

Embodiment 2

[0044]A method for preparing high-strength aramid paper by dissolving and repressing self-reinforcement, comprising the following steps and process conditions:

[0045] (1) processing of polyphenylene sulfide fiber: polyphenylene sulfide fiber is soaked in the saturated solution of sodium hydroxide for 80 minutes;

[0046] (2) Paper making: first mix the polyphenylene sulfide fiber, aramid fiber and aramid pulp processed in step (1) according to the mass ratio of 2:2:3, and then decompose, adding relative raw materials with a mass ratio of 1:1000 polyethylene oxide is used as a dispersant, and then the base paper is made, and the weight of the base paper after copying is controlled to be 65g / m 2 ; The total mass of raw materials includes the mass of polyphenylene sulfide fiber, aramid fiber and aramid pulp.

[0047] (3) paper drying: by mass percentage, microwave drying the base paper made in step (2) until the moisture content is lower than 8%;

[0048] (4) Impregnation pro...

Embodiment 3

[0054] A method for preparing high-strength aramid paper by dissolving and repressing self-reinforcement, comprising the following steps and process conditions:

[0055] (1) processing of polyphenylene sulfide fiber: polyphenylene sulfide fiber is soaked in the saturated solution of sodium hydroxide for 80 minutes;

[0056] (2) Paper making: paper making: first mix the polyphenylene sulfide fiber, aramid fiber, and aramid pulp processed in step (1) according to the mass ratio of 2:2:4, then decompose, and add relative raw materials Polyethylene oxide with a total mass ratio of 1:1000 is used as a dispersant, and then the base paper is made, and the weight of the base paper after copying is controlled to be 65g / m 2 ; The total mass of raw materials includes the mass of polyphenylene sulfide fiber, aramid fiber and aramid pulp.

[0057] (3) paper drying: by mass percentage, microwave drying the base paper made in step (2) until the moisture content is lower than 8%;

[0058] (...

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Abstract

The invention discloses a high-strength aramid paper and a method for preparing the same through dissolving and re-pressing self-reinforcing. The method comprises the following steps: subjecting polyphenylene sulfide fiber to pretreatment, then mixing the pretreated polyphenylene sulfide fiber, aramid fiber and aramid pulp, subjecting dried raw paper to dipping and then pressing treated sample paper; soaking the treated sample paper in a washing solution and removing an organic solvent and inorganic salt left in the paper; and pressing the treated sample paper. When the high-strength aramid paper has gram weight of 10 to 200 g/m<2>, the aramid paper has a thickness of 20 to 400 [mu]m, tensile strength of 10 to 150 KN/m and dielectric strength of 30 to 70 kV/mm. According to the invention, aramid paper and polyphenylene sulfide are used as raw materials; the method is environment friendly and low in cost; the prepared paper has high strength and good evenness; and industrial production can be realized through partial reconstruction of conventional paper machines.

Description

technical field [0001] The invention relates to high-strength aramid paper, in particular to a method for preparing high-strength aramid paper by dissolving and repressing self-reinforcement. The high-strength aramid paper can be applied to packaging, leather, circuit board substrates, military, transportation, Electrical, construction and other fields. Background technique [0002] As common industrial raw materials, aramid fiber and polyphenylene sulfide not only have good insulation performance and easy processing, but also have high temperature resistance, flame retardancy, chemical corrosion resistance and good mechanical properties. In recent years, aramid paper has achieved gratifying results in the application of insulating materials, circuit board substrates, construction industry, some honeycomb structure materials and military fields, and has successfully attracted the attention and attention of countries all over the world. research and development. At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/26D21H13/12D21H17/53D21H23/32D21H25/00D21H25/04
CPCD21H13/12D21H13/26D21H17/53D21H23/32D21H25/005D21H25/04
Inventor 刘德桃路朋博程凡林美燕欧阳豪陈克复
Owner SOUTH CHINA UNIV OF TECH
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