A kind of bio-based fire-resistant paper with fire resistance of 1200 seconds and its preparation method

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

Active Publication Date: 2022-03-15
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

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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  • A kind of bio-based fire-resistant paper with fire resistance of 1200 seconds and its preparation method
  • A kind of bio-based fire-resistant paper with fire resistance of 1200 seconds and its 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 a bio-based fire-resistant paper with a fire resistance of 1200 seconds, which is characterized in that it includes silicon nitride nanorods, iron-doped calcium hydrogen phosphate nanobelts and iron-doped calcium hydrogen phosphate particles; silicon nitride with an oriented three-dimensional network structure Iron-doped calcium hydrogen phosphate nanobelts are designed between the nanorods, and the iron-doped calcium hydrogen phosphate particles are distributed on the surface of the iron-doped calcium hydrogen phosphate nanobelts and the surface of the silicon nitride nanorods. In addition, the iron-doped calcium hydrogen phosphate The particles are also distributed between the pores of the composite structure. The benefit is that by constructing a rod-ribbon-particle multi-scale directional composite structure, it can withstand 1200 seconds without burning and maintain its shape without damage; iron-doped calcium hydrogen phosphate nanoribbons and iron-doped calcium hydrogen phosphate particles endow paper It has excellent biological safety and will not cause allergies or induce lesions and other reactions, so it can be used for long-term applications such as wallpapers, interior architectural decorations, etc. that are in contact with the human body for a long time.

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 Patents(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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