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Preparation method of layered composite polyaryloxadiazole fiber paper

A technology of polyarylene oxadiazole fiber and polyarylene oxadiazole, which is applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, special paper, layered products, etc., which can solve the advantages of single main material and uniform paper Reduced property, affecting paper appearance and performance, etc., to increase the weight range and ensure the appearance of the paper

Pending Publication Date: 2021-03-26
JIANGSU ZANPOD NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, if a high-weight product is molded at one time, the uniformity of the paper will decrease as the thickness and weight increase, and the appearance and performance of the paper will also be affected.
On the other hand, the traditional single-layer paper material has a single proportion, a single internal fiber structure, and a single performance, which cannot maximize the advantages of the main material.

Method used

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  • Preparation method of layered composite polyaryloxadiazole fiber paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, at first polyarylene oxadiazole precipitated fiber and length are 6mm, and fineness is the polyarylene oxadiazole short-cut fiber of 5 deniers namely polym-phenylene isophthalamide fiber is dispersed in water respectively Slurry is made into a mass concentration of 1.5% polyarylene oxadiazole chopped fiber slurry and a mass concentration of 8% polyarylene oxadiazole precipitated fiber slurry; then 20% polyarylene oxadiazole by mass percentage The oxadiazole precipitated fiber slurry is mixed with 80% chopped fiber slurry, and the core layer 2 is formed on the Internet by an ordinary papermaking method; then 30% of the polyarylene oxadiazole precipitated fiber slurry is mixed Mix it with 70% chopped fiber slurry, and form the surface layer 1 and the bottom layer 3 on the Internet with the common papermaking method; The order of layer 1, core layer 2 and bottom layer 3 is compounded from top to bottom, wherein surface layer 1 and bottom layer 3 account for 7...

Embodiment 2

[0023] Embodiment 2, at first polyarylene oxadiazole precipitated fiber and length are 10mm, and fineness is the polyarylene oxadiazole short-cut fiber of 4 deniers namely polym-phenylene isophthalamide fiber dispersed in water respectively Slurry is made into a mass concentration of 2% polyarylene oxadiazole chopped fiber slurry and a mass concentration of 7% polyarylene oxadiazole precipitated fiber slurry; then 40% polyarylene oxadiazole by mass percentage The oxadiazole precipitated fiber slurry is mixed with 60% chopped fiber slurry, and the core layer 2 is formed on the Internet by an ordinary papermaking method; then 70% of the polyarylene oxadiazole precipitated fiber slurry is mixed Mix with 30% chopped fiber slurry, and form surface layer 1 and bottom layer 3 on the Internet by common papermaking method; form one or more layers of core layer 2, surface layer 1 and bottom layer 3 according to the surface layer The order of layer 1, core layer 2 and bottom layer 3 is c...

Embodiment 3

[0024] Embodiment 3, at first polyarylene oxadiazole fibril and length are 7mm, and fineness is the polyarylene oxadiazole short-cut fiber of 10 deniers namely polym-phenylene isophthalamide fiber dispersed in water respectively Slurry is made into a mass concentration of 1.7% polyarylene oxadiazole chopped fiber slurry and a mass concentration of 3% polyarylene oxadiazole precipitated fiber slurry; then 35% polyarylene oxadiazole The oxadiazole precipitated fiber slurry is mixed with 65% chopped fiber slurry, and the core layer 2 is obtained by forming on the Internet with an ordinary papermaking method; then 45% polyarylene oxadiazole precipitated fiber slurry is Mix with 55% chopped fiber slurry, and form surface layer 1 and bottom layer 3 on the Internet with common papermaking methods; form one or more layers of core layer 2, surface layer 1 and bottom layer 3 according to the surface layer The order of layer 1, core layer 2 and bottom layer 3 is compounded from top to bo...

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Abstract

The invention relates to a preparation method of layered composite polyaryloxadiazole fiber paper. The preparation method comprises the following steps: respectively dispersing and defibering polyaryloxadiazole fibrids and chopped fibers required by a surface layer, a bottom layer and a core layer into slurry in water; respectively mixing the polyaryloxadiazole chopped fiberslurry and the fibrid slurry required by the core layer, the surface layer and the bottom layer, and forming on a net by using a common papermaking method; sequentially compounding the wet paper websfrom top to bottom according to the sequence of the surface layer, the core layer and the bottom layer; squeezing and drying; and performing high-temperature calendaring molding. According to the invention, the forming uniformity of paper sheets can be effectively improved; and the structure of fiber distribution in the paper is changed, all layers are mixed into a whole through wet forming compounding, the advantages ofbonding, insulating and enhancing of different polyaryloxadiazole fibers are fully utilized, the mechanical properties such as tensile strength and tearing strength of the paper are effectively improved, and the insulating property, surface smoothness and the like of the paper are improved.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a preparation method of layered composite polyarylene oxadiazole fiber paper. Background technique [0002] In the field of polyarene oxadiazole papermaking technology, it is well known that polyarene oxadiazole chopped fibers provide the mechanical strength properties of paper, while polyarene oxadiazole precipitated fibers provide the insulation properties of paper and serve as bonds between fibers. For bonding materials, the proportion of fibrids is usually 30-70%. If the ratio of the two fiber papermaking is improper, the surface smoothness, mechanical strength and dielectric strength of the paper cannot meet the requirements of the product. If the proportion of fibrids is too high, the surface smoothness of the paper and the dielectric strength of the paper will increase, but the mechanical strength and thermal stability of the paper will decrease, and the paper cannot meet the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/30D21H15/02D21H13/20D21F11/00B32B29/00B32B33/00
CPCD21H27/30D21H15/02D21H13/20D21F11/00B32B29/005B32B33/00B32B2250/26B32B2307/558B32B2307/54B32B2307/5825B32B2307/206
Inventor 李敏吴萌邓艳梅
Owner JIANGSU ZANPOD NEW MATERIAL CO LTD