A kind of laminated thick steel paper and preparation method thereof

A technology of steel paper and thin steel paper, applied in the field of steel paper, can solve the problems of poor dispersion of flame retardants, unsatisfactory flame retardant insulation of paper, etc., and achieve the effects of improving strength, reducing flocculation and high flame retardant performance.

Active Publication Date: 2021-05-14
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

According to the patent, adding a flame retardant to the pulp can give the steel paper a certain flame retardancy and insulation, but the dispersion of the flame retardant in the cellulose is poor, and the flame retardancy and insulation that the paper can achieve not ideal

Method used

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  • A kind of laminated thick steel paper and preparation method thereof
  • A kind of laminated thick steel paper and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: the preparation of laminated thick steel paper comprises the following steps:

[0030] (1) Evenly disperse 10g of montmorillonite in 100g of distilled water, add 50g of 3.8g / L polyepichlorohydrin dimethylamine aqueous solution, stir for 7h, perform suction filtration, put the filter cake at 106°C for 1.5h, It is then ground to obtain a modified montmorillonite;

[0031] (2) 20g cotton fiber, 50g phenylenediamide phthalamide fiber are mixed with 1kg of water for beating, then, add 0.2g modified montmorillonite and 0.25g polyethylene oxide, mix uniformly to obtain mixed slurry;

[0032] (3) Put the mixed slurry into the paper machine, carry out papermaking, press and dehydrate, and obtain the steel paper base paper after drying;

[0033] (4) Put the steel paper base paper into the ammonium phosphate flame-retardant impregnation solution for impregnation and adsorption for 15 minutes;

[0034] (5) Put the impregnated base paper into 20mg / L graphene oxide aq...

Embodiment 2

[0038] Embodiment 2: the preparation of laminated thick steel paper comprises the following steps:

[0039](1) Evenly disperse 10g of montmorillonite in 100g of distilled water, add 50g of 4.3g / L polyepichlorohydrin dimethylamine aqueous solution, stir for 8h, perform suction filtration, put the filter cake at 109°C for 2h, then Grinding it to obtain modified montmorillonite;

[0040] (2) 22g cotton fibers, 55g phenylenediamide phthalamide fibers are mixed with 1.2kg of water for beating, then, add 0.3g modified montmorillonite and 0.45g polyethylene oxide, mix uniformly to obtain mixed slurry;

[0041] (3) Put the mixed slurry into the paper machine, carry out papermaking, press and dehydrate, and obtain the steel paper base paper after drying;

[0042] (4) Put the steel paper base paper into the ammonium phosphate flame-retardant impregnation solution for impregnation and adsorption for 20 minutes;

[0043] (5) Soak the steel base paper in 25mg / L graphene oxide aqueous sol...

Embodiment 3

[0047] Embodiment 3: the preparation of laminated thick steel paper comprises the following steps:

[0048] (1) Evenly disperse 10g of montmorillonite in 100g of distilled water, add 110g of 2.5g / L polyepichlorohydrin dimethylamine aqueous solution, stir for 8h, perform suction filtration, put the filter cake at 113°C for 3h, then Grinding it to obtain modified montmorillonite;

[0049] (2) 28g cotton fibers, 65g phenylenediamide phthalamide fibers are mixed with 1.5kg of water for beating, then, add 0.3g modified montmorillonite and 0.48g polyethylene oxide, mix uniformly to obtain mixed slurry;

[0050] (3) Put the mixed slurry into the paper machine, carry out papermaking, press and dehydrate, and obtain the steel paper base paper after drying;

[0051] (4) Put the steel paper base paper into the ammonium phosphate flame-retardant impregnation solution for impregnation and adsorption for 25 minutes;

[0052] (5) Soak base paper in 35mg / L graphene oxide aqueous solution fo...

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Abstract

The invention relates to a steel paper, in particular to a laminated thick steel paper and a preparation method thereof, comprising the following raw materials in parts by weight: 25-30 parts of cotton fiber, 50-70 parts of phenylenediamide fiber, Mongolian 0.1-1 part of soil removal, 0.1-1 part of polyepichlorohydrin dipotassium amine, 0.1-1 part of polyethylene oxide, 0.01-0.1 part of carboxylated styrene-butadiene latex, and 0.01-0.3 part of graphene oxide. The addition of polyepichlorohydrin dimethylamine modified montmorillonite to the slurry improves the adsorption capacity of the steel paper to the flame retardant, and the addition of polyethylene oxide reduces the flocculation between fibers and improves the paper quality. uniformity, thereby improving the strength of the paper, and then using the positive charge on the polyepichlorohydrin dimethylamine, the negatively charged graphene oxide is adsorbed on the base paper, and the base paper is formed through layer-by-layer adsorption. The film layer makes the steel paper have higher flame retardancy.

Description

technical field [0001] The invention relates to a steel paper, in particular to a laminated thick steel paper and a preparation method thereof. Background technique [0002] Steel paper is a kind of paper with high hardness, also known as hardened paper. Usually, steel paper is made of plant fiber, which is made into steel paper base paper through beating and papermaking, and then the steel paper base paper is gelatinized , drying, lamination and lamination, because the steel paper is suitable for various mechanical processing, such as cutting, drilling, bonding, punching and grinding, etc. Therefore, the steel paper is mostly used in the electrical industry, textile industry, Insulation gaskets, insulating materials and other parts in the fields of transportation, aviation industry and machinery industry, and in some specific fields, steel paper is required not only to have good strength, but also to have good flame retardancy and Insulation. [0003] For example, a "flam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H27/12D21H11/12D21H13/10D21H17/69D21F11/00D21H17/35D21H21/34D21H21/14D21H17/46D21H25/06
CPCD21F11/00D21H11/12D21H13/10D21H17/35D21H17/46D21H17/69D21H21/14D21H21/34D21H25/06D21H27/00
Inventor 王建业吴琼华吴安波
Owner 杭州特种纸业有限公司
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