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Highly filled flame-retardant paper and preparation method thereof

A technology of flame retardant paper and flame retardant filler, applied in the direction of paper, inorganic compound addition, post-treatment modification of cellulose pulp, etc., can solve problems such as poor retention, increase retention, and improve the flame retardant performance of paper. , the effect of small loss of physical properties

Inactive Publication Date: 2015-04-22
王庆艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for PCC (precipitated calcium carbonate) and other filler particles with small particle size and close to neutral surface charge properties, the retention of fillers by adding acrylamide, starch and other retention aids to pulp is better than that of GCC. (ground calcium carbonate), kaolin (kaolin), etc. are inferior

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A production process of highly filled flame-retardant paper is characterized in that it comprises the following steps:

[0036] (1) Beating: Put the pulp into a disc refiner and beater to beat to a certain degree of beating; the certain degree of beating is 40°SR.

[0037] (2) Addition: the pulp that has been beaten through step (1) is mixed with modified fiber, flame retardant filler, starch solution, and filler with carboxyl content of different weights of 1.8 to 2.5mmol / g; the content of modified fiber is 10% of the absolute dry pulp; the quality of the flame retardant filler is 10% of the weight of the absolute dry pulp; the starch solution is added to the mixing stock tank of the papermaking wet end system in the amount of 1.0kg / ton of the absolute dry pulp and mixed to obtain the papermaking pulp, and the filler The mass is 10% of the dry pulp weight;

[0038] Step (2) also includes: adding a fixative in the amount of 0.1kg / ton dry pulp to the papermaking slurry ...

Embodiment 2

[0052] A production process of highly filled flame-retardant paper is characterized in that it comprises the following steps:

[0053] (1) Beating: Put the pulp into a disc refiner and beater to beat to a certain degree of beating; the certain degree of beating is 45°SR.

[0054] (2) Addition: the pulp that has been beaten through step (1) is mixed with modified fiber, flame retardant filler, starch solution, and filler with carboxyl content of different weights of 1.8 to 2.5mmol / g; the content of modified fiber is 18% of the absolute dry pulp; the quality of the flame retardant filler is 7% of the weight of the absolute dry pulp; the starch solution is added to the mixing stock tank of the papermaking wet end system in the amount of 4.0kg / ton of the absolute dry pulp and mixed to obtain the papermaking pulp, and the filler The quality of the dry pulp is 30% of the weight;

[0055] The step (2) also includes: adding a fixative in the amount of 0.6kg / ton dry pulp to the paper...

Embodiment 3

[0070] A production process of highly filled flame-retardant paper is characterized in that it comprises the following steps:

[0071] (1) Beating: Put the pulp into a disc refiner and beater to beat to a certain degree of beating; the certain degree of beating is 50°SR.

[0072] (2) Addition: the pulp that has been beaten through step (1) is mixed with modified fiber, flame retardant filler, starch solution, and filler with carboxyl content of different weights of 1.8 to 2.5mmol / g; the content of modified fiber is 30% of the absolute dry pulp; the quality of the flame retardant filler is 5% of the absolute dry pulp weight; the starch solution is added to the mixing stock tank of the papermaking wet end system in the amount of 10kg / ton of absolute dry pulp to obtain the papermaking slurry, The quality of described filler is 40% of absolute dry pulp weight;

[0073] The step (2) further includes: adding a fixative in an amount of 1 kg / ton dry pulp to the papermaking slurry at ...

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Abstract

The invention relates to the field of flame-retardant material production, and discloses a highly filled flame-retardant paper, and a preparation method and an application thereof. The preparation method comprises the following steps: beating is carried out, wherein a beating degree of a pulp material is controlled to be 30-50 DEG SR; modified fiber with a carboxyl group content of 1.8-2.5mmol / g, a flame-retardant filling material, a starch solution and a filling material with different proportions are sequentially added into the pulp, wherein the content of the modified fiber is 10-30% of absolute dry pulp, and the starch solution with an amount of 1.0-10kg / ton of absolute dry pulp is added into a paper-making wet-end system mixed pulp tank; the mixture is well mixed, such that a paper-making pulp material is obtained; the paper-making pulp is made into paper on a paper machine; and pressing and drying are carried out, such that the highly filled flame-retardant paper is obtained. According to the invention, the modified fiber with carboxyl group content of 1.8-2.5mmol / g is used as fiber for making paper, such that high filling amount of the paper is realized. The highly filled flame-retardant paper has excellent flame retardant effects of no toxicity, no smoke and the like. Strength and thickness of the obtained paper are both improved. The process of the method is relatively simple.

Description

technical field [0001] The invention belongs to the field of flame retardant material production, and in particular relates to a highly filled flame retardant paper and its preparation method and application. Background technique [0002] Flame retardant paper is made by adding flame retardants to the inside or surface of paper through processing techniques such as pulp addition, impregnation or coating. Flame retardants achieve the purpose of flame retardancy by hindering the thermal decomposition of fibers, inhibiting the generation of combustible gases, or by isolating heat and air and diluting combustible gases. [0003] The paper produced by the impregnation method needs to absorb a large amount of flame retardants, which has a great impact on the performance of the paper itself, so the scope of application is narrow. The flame retardant of the coating method is mainly concentrated on the surface of the paper, and its surface flame retardant effect is relatively good,...

Claims

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Application Information

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IPC IPC(8): D21H11/20D21H11/18D21H17/28D21H17/67
Inventor 王庆艳
Owner 王庆艳
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