Manufacturing method of low-cost pure meta-aramid insulating composite paper

A manufacturing method and low-cost technology, applied in pulp beating/refining method, synthetic cellulose/non-cellulose material pulp/paper, papermaking, etc., can solve the problem of high cost of aramid composite paper, achieve compact internal structure, The paper surface is smooth and flat, and the crystallinity is improved.

Pending Publication Date: 2022-06-03
LONGPONT
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for manufacturing low-cost pure meta-aramid i

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  • Manufacturing method of low-cost pure meta-aramid insulating composite paper
  • Manufacturing method of low-cost pure meta-aramid insulating composite paper
  • Manufacturing method of low-cost pure meta-aramid insulating composite paper

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[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments.

[0045] The components of the embodiments of the invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

[0046] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] In the description of the present invention, it should b...

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Abstract

The invention discloses a manufacturing method of low-cost pure meta-aramid insulating composite paper, and belongs to the technical field of aramid paper preparation, and the manufacturing method comprises the following steps: preparing raw materials including 5-40 parts by weight of aramid chopped fiber and 60-95 parts by weight of aramid fibrid; making paper with two layers of inclined nets; deionized water is adopted for anilox roller water coating; and hot rolling is carried out in a flat rolling mode and a back rolling mode in sequence. In the invention, filiform fibrid is selected as fibrid, the specific surface area of the filiform fibrid is smaller than that of film-like fibrid, the water filtering speed is high during papermaking, the papermaking speed is also high, and the papermaking speed can be greatly improved; the ultra-low-concentration pulp is adopted, so that the dehydration amount of a forming net part is required to be large, the dehydration amount can be ensured to be sufficient when a two-layer inclined net paper machine is used for manufacturing the composite paper under the sizing concentration of 0.01%-0.02% by adopting double overlapped nets, and the quality of the composite paper is ensured; a wet rolling method is adopted for hot rolling, blank paper is humidified with deionized water, and then wet blank paper is subjected to hot rolling, so that the paper surface is high in strength and smooth.

Description

technical field [0001] The invention relates to the technical field of aramid paper preparation, in particular to a manufacturing method of low-cost pure meta-aramid insulating composite paper. Background technique [0002] Meta-aramid paper is a paper-like high-temperature resistant material made of meta-aramid chopped fibers and meta-aramid fibrids as raw materials, which are produced by wet lamination and hot rolling. The analyte fibers provide bonding while providing dielectric properties in insulation applications. [0003] Because of its light weight and high strength, high temperature resistance, flame retardant, corrosion resistance and excellent dielectric properties, meta-aramid paper can be widely used as insulating material and honeycomb core material in aerospace, rail transit, electrical and electronic insulation and other fields. Among them, the meta-aramid paper used in the insulation field is divided into two categories: composite paper (A) and pure paper. ...

Claims

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Application Information

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IPC IPC(8): D21B1/34D21D1/30D21F1/00D21F5/02D21F7/00D21H13/26
CPCD21B1/345D21D1/30D21H13/26D21F1/00D21F5/02D21F7/00
Inventor 尹盛东常小斌李永锋蒋少波丁见兴蒋泉洪
Owner LONGPONT
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