A method for preparing para-aramid paper with para-aramid precipitated fiber

A technology of para-aramid paper and para-aramid fiber, which is applied in the directions of fiber dispersant addition and paper, etc., can solve the problems of weak dimensional stability, limited wide application, poor evenness, etc. Surface activity, the effect of improving interfacial affinity
CN103572640BActive Publication Date: 2016-01-20SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2016-01-20

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Abstract

The invention discloses a method for preparing para aramid paper from para aramid fibrid. The method concretely comprises the steps of carrying out surface treatment, defibering and dispersion on para aramid chopped fibers; carrying out ultrasonic treatment and pulping treatment on the para aramid fibrid; mixing the treated para aramid chopped fibers and the treated para aramid fibrid; adding anionic polyacrylamide into the mixed fibers to obtain aramid fiber pulp; shaping the aramid fiber pulp on an inclined wire paper machine; dehydrating, squeezing and drying; carrying out pre-hot-pressing on the dried aramid base paper, and then carrying out hot pressing by a hot press to obtain the para aramid paper. After the method for preparing the para aramid paper from the para aramid fibrid is adopted, the tensile strength, the tearing strength, the breaking strength, the wear resistance and the dielectricity of the para aramid paper are remarkably improved, and the para aramid paper can be taken as a structural material, an insulating material or an electronic material and is relatively widely applied to the fields of transportation, electronics and electric power, aerospace and the like.
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Description

technical field

[0001] The invention belongs to the technical field of manufacturing special fiber synthetic aramid paper, and in particular relates to a method for preparing para-aramid paper with para-aramid precipitated fibers. Background technique

[0002] Para-aramid fiber (poly-p-phenylene terephthalamide) has excellent properties such as high specific strength, high specific modulus, high temperature resistance and corrosion resistance, and has fatigue resistance, shear resistance, small relative density and size Good stability and other advantages, is a typical representative of high-performance synthetic fibers. The current products are mainly para-aramid chopped fiber, para-aramid pulp fiber and para-aramid precipitated fiber. With the development of modern paper industry, para-aramid fiber has become an important paper-making raw material .

[0003] Para-aramid paper is prepared from para-aramid chopped strands and precipitated fibers (or pulp fibers) in a certa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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