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Flame-retardant insulating vulcanized paper and preparation method thereof

A technology of steel paper and cellulose, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problem of unsatisfactory flame retardant effect of paper, poor dispersion of inorganic flame retardants, and low adsorption of flame retardant impregnating liquid, etc. problems, to achieve the effect suitable for large-scale production, high flame retardancy, high strength

Active Publication Date: 2017-11-07
杭州特种纸业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patents add inorganic flame retardants to the pulp and subsequently impregnate the flame retardant dipping solution to improve the flame retardancy of the paper. Although it can improve the flame retardant effect of the steel paper to a certain extent, the main material of the paper itself is The dispersibility of cellulose and inorganic flame retardants in paper is poor; secondly, the impregnation of flame retardant impregnating liquid to cellulose is not good when impregnated with flame retardant impregnating liquid, so the adsorption amount of paper to flame retardant impregnating liquid is relatively low. Low, which eventually leads to the unsatisfactory flame retardant effect of the paper

Method used

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  • Flame-retardant insulating vulcanized paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A fire-retardant insulating steel paper, which is made of 9 layers of base paper glued together. It is prepared from the following raw materials in parts by weight: 100 parts of wood pulp, 50 parts of cotton pulp, 4 parts of asbestos fiber, 400 parts of flame-retardant impregnated emulsion, 300 parts of swelling gelling solution, 12 parts of cellulose gas phase gel particles, fish 5 parts of bone meal, 1 part of ethylene glycol diglycidyl ether, 5 parts of fish maw extract gel.

[0032] Wherein, the solid content of the wood pulp and cotton pulp is 30wt%.

[0033] The flame retardant dipping emulsion consists of 6 wt% of dimethyl methyl phosphate, 0.75 wt% of emulsifier and the rest of water.

[0034] The swelling and gelling solution is a zinc chloride solution with a concentration of 15 wt%.

[0035] The preparation method of the cellulose air-phase gel particles is as follows: the wood powder is pressure-impregnated in a pressurized container containing 5 wt % pota...

Embodiment 2

[0044] A flame-retardant insulating steel paper, which is made of 12 layers of base paper gelled and bonded; it includes the following raw materials in parts by weight: 90 parts of wood pulp, 40 parts of cotton pulp, 3 parts of asbestos fiber, and 350 parts of flame-retardant impregnated emulsion , 200 parts of swelling and gelling liquid, 10 parts of cellulose gas-phase gel particles, 4 parts of fish bone meal, 0.5 parts of ethylene glycol diglycidyl ether, and 4 parts of fish maw extract gel.

[0045] Wherein, the solid content of the wood pulp and cotton pulp is 40wt%.

[0046] The flame retardant dipping emulsion consists of 4 wt% of dimethyl methyl phosphate, 0.5 wt% of emulsifier and the rest of water.

[0047] The swelling and gelling solution is a zinc chloride solution with a concentration of 20 wt%.

[0048] The preparation method of the cellulose air-phase gel particles is as follows: the wood powder is pressure-impregnated in a pressurized container containing 4wt...

Embodiment 3

[0057] A kind of flame-retardant insulating steel paper, which is made of 7 layers of base paper gelled and bonded; it includes the following raw materials in parts by weight: 110 parts of wood pulp, 60 parts of cotton pulp, 5 parts of asbestos fiber, and 450 parts of flame-retardant impregnated emulsion , 400 parts of swelling and gelling liquid, 14 parts of cellulose gas-phase gel particles, 6 parts of fish bone meal, 1.5 parts of ethylene glycol diglycidyl ether, and 6 parts of fish maw extract gel.

[0058] Wherein, the solid content of the wood pulp and cotton pulp is 20wt%.

[0059] The flame retardant dipping emulsion consists of 8 wt% of dimethyl methyl phosphate, 1 wt% of emulsifier and the rest of water.

[0060] The swelling and gelling solution is a zinc chloride solution with a concentration of 5wt%.

[0061] The preparation method of the cellulose air-phase gel particles is as follows:

[0062] Pressurize and impregnate the wood powder in a pressurized containe...

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Abstract

The invention relates to the field of papermaking, and discloses flame-retardant insulating vulcanized paper and a preparation method thereof. The vulcanized paper is obtained through colloidization and bonding of a plurality of layers of base paper, and is prepared from the following raw materials in parts by weight: 90-110 parts of wood pulp, 40-60 parts of cotton pulp, 3-5 parts of asbestos fiber, 350-450 parts of flame-retardant impregnated emulsion, 200-400 parts of swelling colloidization liquid, 10-14 parts of cellulose gas-phase gel particles, 4-6 parts of fishbone powder, 0.5-1.5 parts of ethylene glycol diglycidyl ether, and 4-6 parts of swim bladder extract gel. The insulating vulcanized paper disclosed by the invention is high in carrying capacity, has relatively high flame retardance, and has relatively high strength at the same time. Besides, the used materials are green and environment-friendly, and the preparation process is simple and reasonable, so that the flame-retardant insulating vulcanized paper is suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a flame-retardant insulating steel paper and a preparation method thereof. Background technique [0002] Insulating steel paper has the characteristics of hard paper, high dielectric strength, high elasticity, good wear resistance, good heat resistance and good insulation. And it can be cut, drilled, crushed, punched, planed, bent, milled, etc. It is mainly used for heat insulation insulators of various household appliances, various electrical arc extinguishers, slot wedges for electronic rotors, and insulating gaskets , parts, etc. In some specific fields, in addition to the good insulation of insulating steel paper, it is also required to have good flame retardancy to prevent safety accidents. [0003] The Chinese patent with the application number 201210108923.X discloses a colored flame-retardant insulating steel cardboard and its manufacturing method. Based on papermaking techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/14D21H21/14D21H21/34D21H15/12D21H11/12D21H13/42D21H21/16D21H11/18D21H17/14D21H17/02D21H21/52D21H27/12H01B3/52C08J9/28C08H1/00
CPCC08H1/00C08J9/28C08J2201/05C08J2205/026C08J2301/02D21H11/12D21H11/18D21H13/42D21H15/12D21H17/02D21H17/14D21H21/14D21H21/16D21H21/34D21H21/52D21H27/14H01B3/52
Inventor 吴琼华王建业吴安波
Owner 杭州特种纸业有限公司
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