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Production method for aramid fiber 1414 paper substrate material

A production method and technology of aramid fiber, applied in the field of production of aramid fiber 1414 paper-based materials, can solve the problems of mechanical strength and dielectric property damage, increasing the gap of aramid fiber paper, reducing paper insulation performance and high temperature resistance, etc. Achieve the effects of improving physical strength, increasing insulation performance, and improving production efficiency

Inactive Publication Date: 2013-06-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two methods adopt the method of separate operation, which will cause certain damage to the mechanical strength and dielectric properties of the paper, easily increase the voids of the aramid fiber paper, and reduce the insulation performance and durability of the paper. high temperature performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Soak aramid 1414 chopped fibers in a concentration of 1.2×10 -3 mol / L sodium dodecylbenzene sulfonic acid solution, stirred and washed for 30min to remove impurities on the surface of aramid 1414 chopped fibers, and then washed the sodium dodecylbenzene sulfonic acid solution in the aramid 1414 chopped fibers ; Utilize the trough beater to decompose again, and the decompression concentration is controlled at 0.4%, to obtain the aramid fiber 1414 chopped fiber slurry; wherein, the preparation method of the sodium dodecylbenzenesulfonic acid solution is: dodecylbenzenesulfonate Sodium acid powder is dissolved in hot water at 60°C, and the concentration is 1.2×10 -3 mol / L sodium dodecylbenzenesulfonate solution;

[0024] 2) Dip the polyester fiber in hot ethanol with a temperature of 30°C and a mass concentration of 12% for 20 minutes to wash off the surface oil stains, and then use a trough beater to decompose, and the decompression concentration is controlled at 0.6%...

Embodiment 2

[0030] 1) Soak aramid 1414 chopped fibers in a concentration of 1.2×10 -3 In the sodium dodecylbenzenesulfonate solution of mol / L, stir and wash 30min, to remove the impurity on the surface of the aramid 1414 chopped fiber, then wash the sodium dodecylbenzenesulfonate solution in the aramid 1414 chopped fiber ; Utilize the trough beater to decompose again, and the decompression concentration is controlled at 0.8%, to obtain the aramid fiber 1414 chopped fiber slurry; wherein, the preparation method of the sodium dodecylbenzenesulfonic acid solution is: dodecylbenzenesulfonate Sodium acid powder is dissolved in hot water at 60°C, and the concentration is 1.2×10 -3 mol / L sodium dodecylbenzenesulfonate solution;

[0031] 2) Dip the polyester fiber in hot ethanol with a temperature of 45°C and a mass concentration of 12% for 20 minutes to wash off the oil stains on the surface, and then use a tank beater to decompose it, and the decomposition concentration is controlled at 1.2%. ...

Embodiment 3

[0037] 1) Soak aramid 1414 chopped fibers in a concentration of 1.2×10 -3 mol / L sodium dodecylbenzene sulfonic acid solution, stirred and washed for 30min to remove impurities on the surface of aramid 1414 chopped fibers, and then washed the sodium dodecylbenzene sulfonic acid solution in the aramid 1414 chopped fibers ; Utilize the trough beater to decompose again, and the decompression concentration is controlled at 1.2%, to obtain the aramid fiber 1414 chopped fiber slurry; wherein, the preparation method of the sodium dodecylbenzenesulfonic acid solution is: dodecylbenzenesulfonate Sodium acid powder is dissolved in hot water at 60°C, and the concentration is 1.2×10 -3 mol / L sodium dodecylbenzenesulfonate solution;

[0038] 2) Dip the polyester fiber in hot ethanol with a temperature of 60°C and a mass concentration of 12% for 20 minutes to wash off the oil stains on the surface, and then use a tank beater to decompose, and the deconcentration is controlled at 1.8%, that is...

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Abstract

The invention relates to a production method for aramid fiber 1414 paper substrate material, which comprises the following steps of uniformly mixing aramid fiber 1414 chopped fiber size, modified thermoplasticity fiber size and aramid fiber 1414 pulp fiber size and then defibering; adding maleic anhydride-acrylic copolymer for mixed pulp dispersing; then regulating the concentration of the pulp and forming and hot pressing the obtained pulp suspension through manufacture paper with pulp so as to obtain aramid fiber 1414 paper substrate body paper; dipping the aramid fiber 1414 paper substrate body paper in polyimide resin glue solution, and removing volatile solvent after drying so as to obtain the aramid fiber 1414 paper substrate material. The preparation method is environment-friendly, metal ion can be prevented from contaminating the fiber again, the problem of a conventional dispersing agent generating bubbles in manufacture paper with pulp process is solved, the defect of adding a third fiber and organic resin alone is overcome, the physical property, resistance to high temperature and insulating property of the produced end product paper are greatly improved, and the functional index of the high performance aramid fiber 1414 paper substrate material can be fully achieved.

Description

technical field [0001] The invention belongs to the field of papermaking, and in particular relates to a production method of aramid fiber 1414 paper base material. Background technique [0002] Aramid fiber is prepared by wet forming process of papermaking and aramid paper-based material has the characteristics of light specific gravity, high specific strength, high specific stiffness, impact resistance, high temperature resistance, outstanding corrosion resistance and electromagnetic wave permeability, etc. It is widely used in High-tech fields such as aerospace and electrical insulation. Compared with meta-aramid paper, aramid 1414 paper-based materials lack effective bonding between fibers due to the rigid structure of fiber molecular chains and the chemical inertness of the fiber surface, resulting in poor mechanical properties and cannot fully reflect the high strength of the fiber itself. Due to the characteristics of high modulus, special enhancement treatment is re...

Claims

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Application Information

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IPC IPC(8): D21H13/26D21H17/37D21H17/56D21H21/08
Inventor 张美云刘俊华陆赵情宋利强宋福如吴养育
Owner SHAANXI UNIV OF SCI & TECH
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