Manufacturing method of phenolic fiber paper

A technology of phenolic fiber and a manufacturing method, which is applied in the fields of cellulose raw material pulping, special paper, fiber raw material processing, etc., can solve the problems of high manufacturing cost, high manufacturing cost of phenolic fiber, unable to maintain a fixed shape, etc., and achieves wide application, The effect of low thermal conductivity

Inactive Publication Date: 2012-08-01
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aramid fiber cannot maintain the original fixed shape above the melting point and the cost is high, so it is not suitable for low-cost and high-demand fields.
[0011] At present, in the prior art, there is no paper manufacturing method based on the phenolic fiber produced by the centrifugal fiber-forming technology. The present invention overcomes the high manufacturing cost of the phenolic fiber used in the prior art to manufacture phenolic fiber paper, and provides A method for manufacturing phenolic fiber paper using phenolic resin, which has the advantages of low cost, flexible manufacturing conditions, and supports the modification of phenolic fiber paper by various composite materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Using grade 1024 phenolic resin with a softening point of 114°C, through horizontal disc centrifugal spinning equipment, the phenolic fiber was produced by horizontal disc centrifugal spinning method.

[0057] In this embodiment, the process of making phenolic fiber by horizontal disk centrifugal spinning method is that the phenolic resin raw material flows into the center of the horizontal rotating disk in a molten or solution state, and is centrifuged by the heated rotating disk. Under centrifugal action, the melt Or the solution turns into filaments, and after cooling treatment, phenolic fibers are finally formed. Wherein, the melting temperature is 130° C. to 150° C., the surface temperature of the rotating disk is 140° C. to 160° C., and the rotation speed is 1500 rpm. The diameter of the prepared phenolic fiber is 10-20 microns.

[0058] Use the above-mentioned phenolic fiber to soak in an aqueous solution with a ratio of hydrochloric acid and formaldehyde of 1:1...

Embodiment 2

[0062] Based on Example 1, the papermaking equipment was changed into an experimental manual papermaking net, the hot pressing process was completed by heating and pressing the metal template, and the rest of the conditions were unchanged, and the phenolic fiber paper was obtained. Its density was 0.7g / cm3, tensile strength The strength is 4.4N / cm, the thickness is 0.3mm, under the protection of nitrogen, the thermal weight loss rate at 800°C is 26%.

Embodiment 3

[0064] The phenolic resin with a softening point of 138°C was used to produce phenolic fibers through a horizontal disc centrifugal spinning device and a horizontal disc centrifugal spinning method.

[0065] In this embodiment, the process of making phenolic fiber by horizontal disk centrifugal spinning method is that the phenolic resin raw material flows into the center of the horizontal rotating disk in a molten or solution state, and is centrifuged by the heated rotating disk. Under centrifugal action, the melt Or the solution turns into filaments, and after cooling treatment, phenolic fibers are finally formed. Wherein, the melting temperature is 130° C. to 150° C., the surface temperature of the rotating disk is 140° C. to 160° C., and the rotation speed is 1500 rpm. The diameter of the prepared phenolic fiber is 10-20 microns.

[0066] Use the above-mentioned phenolic fiber to soak in an aqueous solution with a ratio of hydrochloric acid and formaldehyde of 1:1 and a co...

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Abstract

The invention relates to a manufacturing method of phenolic fiber paper. The phenolic fiber paper can be obtained through preparing a phenolic fiber from a phenolic resin by a horizontal disk type centrifugal spinning process, curing the phenolic resin, and adding a composite material to prepare a pulp. The heat and ablation resistance, the thermal and electrical insulation and the chemical stability of phenolic aldehyde are combined with the toughness and the flexibility of paper in the invention, so the phenolic fiber paper has good application prospects in fields of daily life, industrial production, the spaceflight industry and the like.

Description

technical field [0001] The invention relates to the technical field of polymer fiber papermaking, in particular to a method for making phenolic fiber paper using phenolic resin. technical background [0002] Phenolic resin, a functional polymer material, has the characteristics of flame resistance, flame resistance, heat insulation and chemical stability, and has broad and important application prospects. Compared with traditional phenolic resin materials, phenolic fibers reduce the dimensions of phenolic materials (three-dimensional shape materials) to one-dimensional linear materials. With the reduction of material dimensions, the application range of phenolic fibers has been expanded. [0003] Phenolic fiber is a polymer compound with a polyphenolic cross-linked structure, with a cross-linking degree ≥ 85%. It was first developed by DuPont in the United States, and its trade name is Kynol. It is synthesized from abundant and cheap basic raw materials such as phenol and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/22D21C3/22
Inventor 张以群谢美然赵昭
Owner EAST CHINA NORMAL UNIV
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