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Bio-based fire-resistant paper capable of resisting fire for 1200 seconds and preparation method

A bio-based, fire-resistant technology, applied in the field of papermaking, can solve the problems of flammability and fire resistance, books and paper documents burned, etc., and achieve the effect of improving fire resistance and high flexibility

Active Publication Date: 2020-01-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Traditional paper is usually made of plant fibers such as trees or grasses with some additives and bleaching agents. The Achilles heel of traditional paper is that it is flammable and not fire-resistant, which causes books and paper documents to burn in a fire. Burning is one of the main reasons for the damage of many paper cultural relics. At the same time, when paper is used in interior decoration and other environments, it will be in contact with the human body for a long time, so it is necessary for the paper to have the characteristics of biocompatibility and environmental friendliness

Method used

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  • Bio-based fire-resistant paper capable of resisting fire for 1200 seconds and preparation method
  • Bio-based fire-resistant paper capable of resisting fire for 1200 seconds and preparation method

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Embodiment 1

[0025] (1) Mix iron-doped calcium hydrogen phosphate nanobelts and iron-doped calcium hydrogen phosphate particles uniformly according to a mass ratio of 1:5 to obtain powder A;

[0026] (2) Mix polysilazane and xylene uniformly according to the volume ratio of 1:1 to obtain liquid B;

[0027] (3) Add powder A to liquid B, wherein the concentration of powder A is 10g / L, stir evenly to obtain solution C;

[0028] (4) Apply solution C evenly on the graphite paper along the same direction, then dry it at 40°C, then take it out and apply solution C evenly along the same direction again, then dry it again at 40°C, repeat the process The brush-drying process was carried out 6 times in total to obtain sample D;

[0029] (5) Place the sample D in a heat treatment furnace, and in a nitrogen-protected environment, raise the temperature to 230°C at a heating rate of 2°C / min, and keep it for 30 minutes, then raise the temperature to 1150°C at a heating rate of 2°C / min, and keep it warm. ...

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Abstract

The invention relates to bio-based fire-resistant paper capable of resisting fire for 1200 seconds. The bio-based fire-resistant paper is characterized by comprising silicon nitride nanorods, iron-doped calcium hydrophosphate nanoribbons and iron-doped calcium hydrophosphate particles, wherein the iron-doped calcium hydrophosphate nanoribbons are designed among silicon nitride nanorods with a directional three-dimensional network structure, iron-doped calcium hydrophosphate particles are distributed on the surfaces of the iron-doped calcium hydrophosphate nanoribbons and the surfaces of the silicon nitride nanorods; in addition, the iron-doped calcium hydrophosphate particles are further distributed among pores of a composite structure. The bio-based fire-resistant paper has the beneficialeffects that by constructing a construction rod-belt-particle multi-scale directional composite structure, the paper is not combusted in 1200 s without damage on shape; the iron-doped calcium hydrophosphate nanoribbons and the iron-doped calcium hydrophosphate particles endow the paper with biological safety and do not cause allergy or induce lesion and other reactions, so that the iron-doped calcium hydrophosphate nanoribbons and the iron-doped calcium hydrophosphate particles can be applied to wallpaper, interior architecture decoration and other application occasions in long-term contact with human bodies.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and relates to a bio-based fire-resistant paper and a preparation method, in particular to a bio-based fire-resistant paper with a fire resistance of 1200 seconds and a preparation method. Background technique [0002] Paper has become an indispensable product in human daily work and life. Traditional paper is usually made of plant fibers such as trees or grasses with some additives and bleaching agents. The Achilles heel of traditional paper is that it is flammable and not fire-resistant, which causes books and paper documents to burn in a fire. Burning is one of the main reasons for the damage of many paper cultural relics. At the same time, when paper is used in interior decoration and other environments, it will be in contact with the human body for a long time. Therefore, it is necessary for the paper to have the characteristics of biocompatibility and environmental friendliness. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/447C04B35/587C04B35/589C04B41/87
CPCC04B35/447C04B35/587C04B35/589C04B41/009C04B41/5066C04B41/87C04B41/5048C04B35/522
Inventor 张磊磊刘叶叶李贺军
Owner NORTHWESTERN POLYTECHNICAL UNIV
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