Composite papermaking nano reinforced aramid paper and preparation method thereof

A nano-reinforced, aramid paper technology, which is applied in pulp beating methods, papermaking, paper machines, etc., can solve problems such as limiting the performance of aramid paper, and achieve high strength, enhanced performance, and good compatibility.

Pending Publication Date: 2021-04-06
山东聚芳新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the performance of the aramid paper prepared by this method is improved, the wet strength agent is still introduced, which limits the further improvement of the performance of the aramid paper.

Method used

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  • Composite papermaking nano reinforced aramid paper and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0033] A composite papermaking nano-reinforced aramid paper, its raw material components include component A, component B and component C, according to the fiber dry weight, the mass ratio of component A to component B is 30:70, Component C is 13% of the total weight of component A and component B.

[0034] Component A is para-aramid chopped fiber (8mm); component B is para-aramid pulp fiber; component C is para-aramid nanofiber.

[0035] (1) Preparation of component A: Use component A with a volume-molar concentration of 1.2×10 -3 mol / L, sodium dodecylbenzenesulfonate aqueous solution at 60°C for washing pretreatment, the treatment time is 30min, and then washed with clean water, and then the aramid chopped fibers are decomposed by a high-speed decomposer to decompose the concentration 0.01% to make aramid chopped fiber pulp.

[0036] (2) Component B is subjected to beating treatment with a tank beater, the beating concentration is 1.6%, and the beating degree is 50°SR.

...

Embodiment 2

[0044] A composite papermaking nano-reinforced aramid paper, its raw material components include component A, component B and component C, according to the fiber dry weight, the mass ratio of component A to component B is 50:50, Component C is 18% of the total weight of component A and component B.

[0045] Component A is para-aramid chopped fiber (7mm); component B is meta-aramid precipitated fiber; component C is para-aramid nanofiber.

[0046] (1) Preparation of Component A: Use p-aramid chopped fibers at a volume-molar concentration of 1.2×10 -3 mol / L, sodium dodecylbenzenesulfonate aqueous solution at 60°C for washing pretreatment, the treatment time is 60min, and then washed with clean water, and then the aramid chopped fibers are decomposed by a high-speed decomposer to decompose the concentration 0.02% to make aramid chopped fiber slurry.

[0047] (2) Component B is subjected to beating treatment with a tank beater, the beating concentration is 1.5%, and the beating ...

Embodiment 3

[0055] A composite papermaking nano-reinforced aramid paper, its raw material components include component A, component B and component C, according to the fiber dry weight, the mass ratio of component A to component B is 30:70, Component C is 23% of the total weight of component A and component B.

[0056] Component A is meta-aramid chopped fiber (6mm); component B is para-aramid pulp fiber; component C is para-aramid nanofiber.

[0057] (1) Preparation of component A: aramid chopped fibers with a volume-molar concentration of 1.2×10 -3 mol / L, sodium dodecylbenzenesulfonate aqueous solution at 60°C for washing pretreatment, the treatment time is 30min, and then washed with clean water, and then the aramid chopped fibers are decomposed by a high-speed decomposer to decompose the concentration 0.02% to make aramid chopped fiber slurry.

[0058] (2) Component B is subjected to beating treatment with a tank beater, the beating concentration is 0.5%, and the beating degree is 3...

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Abstract

The invention belongs to the technical field of papermaking, and particularly relates to composite papermaking nano reinforced aramid paper and a preparation method thereof. By utilizing the characteristics of easy dispersion, large specific surface area and the like of the para-aramid nanofibers in a solution, the para-aramid nanofiber composite wet paper sheet replaces the traditional pulp wetting agent and adhesive, and the para-aramid nanofiber composite wet paper sheet is prepared from the traditional chopped fibers and pulp or fibrids. Then the para-aramid nanofiber dispersion liquid is subjected to spraying sizing treatment on the surface of the aramid wet paper sheet, then compounding and drying forming are carried out, and the sprayed and compounded paper sheet can significantly improve the uniformity, dielectric property and mechanical strength of aramid paper, improve the forming thickness of finished aramid paper, improve the production efficiency and the like; and the negative influence on the performance of the paper sheet due to the introduction of a third adhesive or a wet strength agent is avoided.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to composite papermaking nano-reinforced aramid paper and a preparation method thereof. Background technique [0002] In recent years, the research and application of high-performance materials have developed rapidly. As a new type of synthetic fiber material with high strength, high modulus and high temperature resistance, aramid has attracted more and more attention. Aramid paper prepared from aramid fiber through papermaking process has excellent dielectric properties, mechanical properties, high temperature resistance, chemical corrosion resistance and flexible designability, and is widely used in high-end insulation, aerospace, rail transit, etc. It is the key material to achieve ultra-high-grade insulation, light weight and high speed. High-performance aramid paper-based composite materials obtained by combining aramid paper with other resins are also increasi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/02D21F3/00D21F5/00D21H13/26D21H19/00D21H21/08D21H23/22
CPCD21H13/26D21D1/02D21F3/00D21F5/00D21H19/00D21H23/22D21H21/08
Inventor 庄锐郑亭路张云奎吴斌星董志荣刘余田刘曙光孟庆敏马相鹏刘焕良于钧宇
Owner 山东聚芳新材料股份有限公司
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