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Environment-friendly type flame retardant paper and preparation method thereof

A flame-retardant paper and an environmentally friendly technology, applied in the field of papermaking, can solve the problems of inability to impart flame retardancy to the interior of the paper, great influence on paper performance, and unsatisfactory flame retardant effect, achieving low cost, small loss of physical properties, The effect of streamlining the production process

Inactive Publication Date: 2016-08-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The paper produced by the impregnation method needs to absorb a large amount of flame retardants, which has poor water resistance, is easy to absorb moisture, and is easy to yellow and deteriorate, which has a great impact on the performance of the paper itself.
The coating method is mainly to concentrate the flame retardant on the surface of the paper. Although the surface flame retardant effect is relatively good, it cannot endow the paper with internal flame retardancy, and the flame retardant effect is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of a kind of environment-friendly flame-retardant paper of the present embodiment, the specific preparation steps are as follows:

[0032] (1) Disintegration: Put bamboo pulp, bagasse and wood pulp raw materials in a pulper (rotor linear speed is 900m / min) in a weight ratio of 1:1:8 for disintegration, and the pulp concentration is controlled at a mass concentration of 5 %, the crushing time is 10min;

[0033] (2) beating: put the pulp disintegrated through step (1) into a disc beater and beat in a free manner until the degree of beating is 40 ° SR;

[0034] (3) Mixing: Add successively the flame retardant pentaerythritol polyphosphate melamine salt (MPP) of 5% dry pulp weight, 1% reinforcing agent cationic starch, 0.1% retention aid to the pulp through step (2) beating Cationic polyacrylamide and 2% waterproofing agent acrylic resin are mixed;

[0035] (4) Forming: the paper pulp after step (3) is mixed is carried out with the quantification of...

Embodiment 2

[0039] The preparation method of a kind of environment-friendly flame-retardant paper of the present embodiment, the specific preparation steps are as follows:

[0040] (1) Disintegration: Put bamboo pulp, bagasse and wood pulp raw materials in a pulper (rotor linear speed is 900m / min) in a weight ratio of 1:1:8 for disintegration, and the pulp concentration is controlled at a mass concentration of 5 %, the crushing time is 10min;

[0041] (2) beating: put the pulp disintegrated through step (1) into a disc beater and beat in a free manner until the degree of beating is 40 ° SR;

[0042] (3) Mixing: Add successively the flame retardant pentaerythritol polyphosphate melamine salt (MPP), 2% reinforcing agent cationic starch, 0.3% retention aid to the pulp through step (2) beating of dry pulp weight Cationic polyacrylamide and 3% waterproofing agent acrylic resin are mixed;

[0043] (4) Forming: the paper pulp after step (3) is mixed is carried out with the quantification of 20...

Embodiment 3

[0047] The preparation method of a kind of environment-friendly flame-retardant paper of the present embodiment, the specific preparation steps are as follows:

[0048] (1) Disintegration: put bamboo pulp, bagasse and wood pulp raw materials in a pulper (rotor linear speed is 900m / min) in a weight ratio of 1:1:8 for disintegration, and the pulp concentration is controlled at a mass concentration of 4 %, the crushing time is 10min;

[0049] (2) beating: put the pulp disintegrated through step (1) into a disc beater and beat in a free manner until the degree of beating is 40 ° SR;

[0050](3) Mixing: Add successively the flame retardant pentaerythritol polyphosphate melamine salt (MPP) of 15% dry pulp weight, 3% reinforcing agent cationic starch, 0.5% retention aid to the pulp through step (2) beating Cationic polyacrylamide and 4% water repellent acrylic resin are mixed;

[0051] (4) Forming: the paper pulp after step (3) is mixed is carried out with the quantification of 200...

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Abstract

The invention belongs to the technical field of papermaking, and discloses an environment-friendly flame-retardant paper and a preparation method thereof. The preparation method is as follows: the plant fiber raw material is placed in a pulper for disintegration, the pulp concentration is controlled between 4% and 9% of the mass concentration, and the disintegration time is 10 to 15 minutes; the disintegrated pulp is beaten to The degree of beating is 40-50°SR, and then the flame retardant pentaerythritol polyphosphate melamine salt (MPP), reinforcing agent, retention aid and water repellent are added for mixing and forming; then use sizing on the surface of the formed paper agent for sizing, hot pressing and drying to obtain the environment-friendly flame-retardant paper. The invention adopts the addition of MPP in the slurry, and can further add MPP in the sizing process, which can greatly improve the flame-retardant performance of the paper, thereby increasing the application range of the paper.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to an environment-friendly flame-retardant paper and a preparation method thereof. Background technique [0002] Paper and paper products are generally made from flammable plant fibers. Paper-based materials often become fire-initiating substances. As people pay more and more attention to fire safety, the requirements for flame retardancy of paper and paper-based products are also getting higher and higher. [0003] At present, methods of adding flame retardants such as adding in pulp, surface coating or impregnating are commonly used to produce flame retardant paper. Flame retardants can 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. [0004] The paper produced by the impregnation method needs to absorb a large amo...

Claims

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Application Information

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IPC IPC(8): D21H11/00D21H11/12D21H15/10D21H17/51D21H21/34D21H21/18D21H21/10D21H21/16D21H19/14D21H19/26
CPCD21H11/00D21H11/12D21H15/10D21H17/51D21H17/72D21H19/14D21H19/26D21H21/10D21H21/16D21H21/18D21H21/34
Inventor 尹标林黄高能杨仁党刘运春
Owner SOUTH CHINA UNIV OF TECH
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