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A kind of flame-retardant insulating steel 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, low adsorption of flame retardant impregnating liquid, poor dispersion of inorganic flame retardants, etc. problem, to achieve the effect suitable for large-scale production, high strength and high flame retardancy

Active Publication Date: 2019-01-29
杭州特种纸业有限公司
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  • Summary
  • 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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  • A kind of flame-retardant insulating steel paper and preparation method thereof
  • A kind of flame-retardant insulating steel paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A flame-retardant insulating steel paper made of 9 layers of raw paper glued together. It is prepared with the following parts by weight of raw materials: 100 parts of wood pulp, 50 parts of cotton pulp, 4 parts of asbestos fiber, 400 parts of flame retardant impregnating emulsion, 300 parts of swelling gelling liquid, 12 parts of cellulose gas phase gel particles, fish 5 parts of bone meal, 1 part of ethylene glycol diglycidyl ether, and 5 parts of fish swim bladder extract glue.

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

[0033] The flame-retardant impregnating emulsion is composed of 6 wt% of dimethyl methyl phosphate, 0.75 wt% of emulsifier and the balance of water.

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

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

Embodiment 2

[0044] A flame-retardant insulating steel paper made of 12 layers of raw paper glued and glued; it is prepared with the following parts by weight of raw materials: 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 gelling liquid, 10 parts of cellulose gas phase gel particles, 4 parts of fish bone meal, 0.5 parts of ethylene glycol diglycidyl ether, 4 parts of fish swim bladder extract glue.

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

[0046] The flame-retardant impregnating emulsion is composed of 4% by weight of dimethyl methyl phosphate, 0.5% by weight of emulsifier and the balance of water.

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

[0048] The preparation method of the cellulose gas phase gel particles is as follows: pressurized immersion treatment of wood flour in a pressurized container co...

Embodiment 3

[0057] A flame-retardant insulating steel paper made of 7 layers of base paper glued and glued; it is prepared with the following parts by weight of raw materials: 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 gelling liquid, 14 parts of cellulose gas phase gel particles, 6 parts of fish bone meal, 1.5 parts of ethylene glycol diglycidyl ether, 6 parts of fish swim bladder extract glue.

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

[0059] The flame-retardant impregnating emulsion is composed of 8 wt% of dimethyl methyl phosphate, 1 wt% of emulsifier and the balance of water.

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

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

[0062] The wood powder is immersed under pressure in a pressurized container containing 6w...

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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 and elasticity, good wear resistance, good heat resistance and good insulation. And it can be cut, drilled, crushed, stamped, planed, bent, milled, etc. It is mainly used for heat insulation insulators of various household appliances, arc extinguishing covers of various electrical appliances, slot wedges for electronic rotors, and insulating gaskets , Parts, etc. In some specific fields, in addition to requiring better insulation of insulating steel paper, it is also required to have better flame retardancy to prevent safety accidents. [0003] The Chinese patent with application number 201210108923.X discloses a colored flame-retardant insulated steel paperboard and its manufacturing method. It is bas...

Claims

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Application Information

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Patent Type & Authority Patents(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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