Aramid insulation paper and preparation method thereof

A technology of insulating paper and aramid fiber, which is applied in papermaking, papermaking machines, textiles and papermaking, etc. It can solve problems such as unsatisfactory demand, undeveloped performance products, and poor performance, so as to improve the use effect and service life, expand The effect of the field of application

Active Publication Date: 2015-08-19
X FIPER NEW MATERIAL CO LTD
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Problems solved by technology

The state has spent huge sums of money to organize scientific and technological research, but has not developed products with bett

Method used

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  • Aramid insulation paper and preparation method thereof

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with specific embodiments.

[0019] see figure 1 As shown, the preparation method of the aramid insulating paper of the present invention comprises the following steps: using a low molecular weight aramid polymer solution with a polymerization degree of 1-100 to produce aramid chopped fibers, and using a polymerization degree of 10 4 -10 6 The high molecular weight aramid fiber polymerization solution is used to produce aramid pulp, and the aramid chopped fiber and aramid pulp are respectively dispersed and disentangled by an ultrasonic disperser, and the specific surface area of ​​the aramid pulp is set to 1.1 times the specific surface area of ​​the above-mentioned aramid chopped fiber, the controllability of the specific surface area of ​​the raw material is realized; the aramid pulp processed by the ultrasonic disperser is mixed with the aramid chopped fiber to form a mixed solution; The mixed li...

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Abstract

The invention discloses aramid insulation paper and a preparation method thereof. The preparation method comprises the steps: producing an aramid chopped fiber by adopting a low-molecular-weight aramid polymerization liquid, producing an aramid pulp by adopting a high-molecular-weight aramid polymerization liquid, and carrying out dispersion and defibering treatment on the aramid chopped fiber and the aramid pulp respectively by an ultrasonic disperser; mixing the aramid pulp and the aramid chopped fiber which are treated by the ultrasonic disperser, to form a mixed liquid; carrying out wet papermaking treatment on the mixed liquid by a multi-layer inclined wire forming device, and carrying out one-step forming and papermaking to obtain raw paper with 250-800 g/m<2>; under conditions of the temperature of 100 DEG C-180 DEG C and the linear pressure of 230-280 kg/cm, carrying out multichannel press polishing on the raw paper to form the aramid insulation paper. The produced aramid insulation paper cannot generate layering, bubbles and other defects, does not affect the flame-retarding characteristic and high temperature and insulation properties of original aramid insulation paper, and improves the use effect and the service life of the aramid insulation paper.

Description

technical field [0001] The invention relates to an aramid insulating paper and a preparation method thereof, in particular to a preparation method of a meta-aramid insulating thick paper. Background technique [0002] The development and application of aramid 1313 insulating paper is an important part of material science research. Aramid 1313 aramid insulating paper has excellent performance: relatively high dielectric strength, and can withstand short-term field strength of 18-40KV / mm ; Mechanical toughness, very high strength, and good elasticity; tear resistance and abrasion resistance are relatively good; excellent thermal stability, continuous exposure to 220 ℃ high temperature environment, its electrical and mechanical properties can at least maintain 10 years; chemical compatibility, basically not affected by most solvents, and very resistant to acid and alkali corrosion, compatible with all kinds of varnishes, adhesives, transformer fluids, lubricating oils and refri...

Claims

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Application Information

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IPC IPC(8): D21H13/26D21F11/00
Inventor 钟洲何素文丁秀臣
Owner X FIPER NEW MATERIAL CO LTD
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