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Hard steel cardboard and its preparation method

A technology of cardboard and hard steel, which is applied in the field of hard steel cardboard and its preparation, can solve the problems of insufficient electrical strength and volume resistance hardness, and achieve good infrared reflectivity, good water absorption, and improved volume resistance.

Active Publication Date: 2017-04-12
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

The electrical strength, volume resistance, hardness and other properties of traditional steel cardboard are not superior enough, and there is still a lot of room for improvement

Method used

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  • Hard steel cardboard and its preparation method
  • Hard steel cardboard and its preparation method
  • Hard steel cardboard and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Hard steel cardboard, including base paper and impregnating agent, said base paper includes hemp fiber, gypsum fiber, aramid fiber, glass fiber, fibrous binder, dispersant, and said impregnating agent includes polyethylene glycol Modified melamine formaldehyde resin, polyvinyl acetate emulsion, antioxidant, anti-oil agent;

[0029] The glass fiber is nano glass fiber, and the particle size of the fiber is controlled below 100nm.

[0030] The anti-oil agent is fluorine-containing silane; the antioxidant is butyl hydroxyanisole (BHA); the fibrous binder is water-soluble PVA fiber; the dispersant is anionic polyacrylamide .

[0031] A kind of preparation method of hard steel cardboard as described above, comprises the steps:

[0032] (1) Beating and rinsing: 20kg of hemp fiber is beaten, the beating degree is 35-38°SR, and the wet weight is 7-8g, then the slurry obtained by beating is screened, purified and rinsed, and then 30kg of gypsum fiber, 30kg aramid fiber, 15kg ...

Embodiment 2

[0039] Hard steel cardboard, including base paper and impregnating agent, said base paper includes hemp fiber, gypsum fiber, aramid fiber, glass fiber, fibrous binder, dispersant, and said impregnating agent includes polyethylene glycol Modified melamine formaldehyde resin, polyvinyl acetate emulsion, antioxidant, anti-oil agent;

[0040] The glass fiber is nano glass fiber, and the particle size of the fiber is controlled below 100nm.

[0041] The anti-oil agent is polyperfluoroalkyl acrylate polymer; the antioxidant is butylated hydroxytoluene (BHT); the fibrous binder is Weirong fiber; the dispersion The agent is anionic polyoxyethylene.

[0042] A kind of preparation method of hard steel cardboard as described above, comprises the steps:

[0043] (1) Beating and rinsing: 30kg of hemp fiber is beaten, the beating degree is 35-38°SR, and the wet weight is 7-8g, then the slurry obtained by beating is screened, purified and rinsed, and then 40kg of gypsum fiber, 50kg aramid...

Embodiment 3

[0050] Hard steel cardboard, including base paper and impregnating agent, said base paper includes hemp fiber, gypsum fiber, aramid fiber, glass fiber, fibrous binder, dispersant, and said impregnating agent includes polyethylene glycol Modified melamine formaldehyde resin, polyvinyl acetate emulsion, antioxidant, anti-oil agent; the glass fiber is nano glass fiber, and the fiber particle size is controlled below 100nm.

[0051] The anti-oil agent is a polyperfluoroalkyl acrylate polymer; the antioxidant is tert-butylhydroquinone (TBHQ); the fibrous binder is a low melting point polyester; the The above-mentioned dispersant is anionic polyoxyethylene.

[0052] A kind of preparation method of hard steel cardboard as described above, comprises the steps:

[0053]

[0054] (1) Beating and rinsing: 50kg of hemp fiber is beaten, the beating degree is 35-38°SR, and the wet weight is 7-8g, then the slurry obtained by beating is screened, purified and rinsed, and then 60kg of gyps...

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Abstract

The invention discloses a hard vulcanized fiber board. The hard vulcanized fiber board is prepared from base paper and impregnating agents, the base paper is prepared from bast fibers, plaster fibers, aramid fibers, glass fibers, a fibrous binding agent and a dispersing agent, and the impregnating agents comprise polyethylene glycol modified melamine formaldehyde resin, a polyvinyl acetate emulsion, an antioxidant and an oil resistant agent. Various fibers are adopted as the pulp raw materials of the hard vulcanized fiber board, the specially-made impregnating agents are adopted to promote the properties such as volume resistance, electrical strength and hardness, the dimensional stability is good, and the market demand can be better met.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a hard steel cardboard and a preparation method thereof. Background technique [0002] Steel paperboard is made of plant fiber as raw material, which is processed into the steel paper base paper required by the steel paperboard through pulping, and then the steel paper base paper is made after lamination, gelatinization, drying and other processes. The hardness of steel cardboard is similar to that of aluminum, but the specific gravity is only half of that of aluminum. It is resistant to high and low temperatures (-40°C to 100°C), has excellent electrical insulation and oil resistance, and is widely used in insulating and heat insulating materials. [0003] With the development of the economy, there are more and more categories of new industries, and the requirements for various performances of steel cardboard are also getting higher and higher. The electrical strength, vol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/12D21H13/40D21H13/36D21H13/10D21H27/12D21H21/08
CPCD21H11/12D21H13/10D21H13/36D21H13/40D21H21/08D21H27/00
Inventor 吴安波
Owner 杭州特种纸业有限公司
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