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A flame-retardant and smoke-suppressing plant fiber paper-based material and its preparation method

A plant fiber and paper-based technology, applied in the field of flame-retardant materials, can solve problems such as the difficulty of endowing plant fiber paper-based materials with flame-retardant and smoke-suppressing properties, limiting the use range of flame-retardant paper-based materials, and affecting the physical properties of paper-based materials. Achieve the effects of reducing thermal decomposition and flammable gas generation, good charcoal coverage, and reducing combustion smoke production

Active Publication Date: 2019-01-15
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of adding flame retardants to pulp is the easiest way to produce plant fiber flame-retardant paper-based materials, but currently adding flame retardants such as aluminum hydroxide, magnesium hydroxide, and hydrotalcite to pulp has low flame-retardant and smoke-suppressing efficiency and is difficult to produce. Endow plant fiber paper-based materials with good flame retardant and smoke suppression properties
And due to the large amount added during use, it will seriously affect the physical properties of the paper-based material itself, limiting the scope of use of flame-retardant paper-based materials

Method used

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  • A flame-retardant and smoke-suppressing plant fiber paper-based material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A flame-retardant and smoke-suppressing plant fiber paper-based material, prepared by the following method:

[0028] ① Pour 300 kg of phosphoric acid with a concentration of 85% into the reactor, heat and stir, and add 255 kg of urea when the temperature rises to 80°C;

[0029] ②When the temperature rises to 130°C, add 15 kg of diatomite and keep it warm for 5 minutes. When the temperature continues to rise to 140°C, add 3 kg of nano-titanium dioxide, keep it warm for 10 minutes, and pour out the product;

[0030] ③The product was cured at 250°C for 2.5 hours, and the cured material was ground and sieved to obtain the ammonium polyphosphate-diatomaceous earth / nano-titanium dioxide composite flame retardant and smoke suppressant for paper;

[0031] ④ Add the composite flame retardant and smoke suppressant to the regenerated fiber pulp, and prepare the pulp according to the ratio of regenerated plant fiber: composite flame retardant and smoke suppressant: cationic polyacr...

Embodiment 2

[0033] A flame-retardant and smoke-suppressing plant fiber paper-based material, prepared by the following method:

[0034] ① Pour 300 kg of phosphoric acid with a concentration of 85% into the reactor, heat and stir, and add 255 kg of urea when the temperature rises to 82°C;

[0035] ②When the temperature rises to 133°C, add 30 kg of diatomite and keep it warm for 6 minutes. When the temperature continues to rise to 142°C, add 5 kg of nano-titanium dioxide, keep it warm for 15 minutes, and pour out the product;

[0036] ③The product was cured at 254°C for 2.6 hours, and the cured material was ground and sieved to obtain the ammonium polyphosphate-diatomaceous earth / nano-titanium dioxide composite flame retardant and smoke suppressant for paper;

[0037] ④ Add the composite flame retardant and smoke suppressant to the regenerated fiber pulp, and prepare the pulp according to the ratio of regenerated plant fiber: composite flame retardant and smoke suppressant: cationic polyacr...

Embodiment 3

[0039] A flame-retardant and smoke-suppressing plant fiber paper-based material, prepared by the following method:

[0040] ① Pour 300 kg of phosphoric acid with a concentration of 85% into the reactor, heat and stir, and add 285 kg of urea when the temperature rises to 83°C;

[0041] ② When the temperature rises to 134°C, add 30 kg of diatomite and keep it warm for 8 minutes. When the temperature continued to rise to 143°C, 10 kg of nano-titanium dioxide was added, kept for 30 minutes, and the product was poured out;

[0042] ③The product was cured at 256°C for 2.8 hours, and the cured material was ground and sieved to obtain the ammonium polyphosphate-diatomaceous earth / nano-titanium dioxide composite flame retardant and smoke suppressant for paper;

[0043] ④ Add the composite flame retardant and smoke suppressant to the regenerated fiber pulp, and prepare the pulp according to the ratio of regenerated plant fiber: composite flame retardant and smoke suppressant: cationic ...

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Abstract

The invention relates to the field of a flame-resistant material and especially relates to an anti-flaming smoke-suppressing packaging board. An anti-flaming smoke-suppressing plant fiber paper base material is formed by processing recycled plant fibers, compound anti-flaming smoke-suppressing agents and retention aids at the mass ratio of 1: (0.1-0.15): (0.003-0.007). The compound anti-flaming smoke-suppressing agent is prepared according to the following steps: (1) putting 85% phosphoric acid into a reactor, heating, stirring, increasing temperature to 80-85 DEG C, adding urea, and then adding kieselguhr when the temperature is increased to 130-135 DEG C, and keeping the temperature for 5-10min; (2) while increasing the temperature to 140-145 DEG C, adding nanometer titania powder, keeping the temperature for 10-40min, solidifying the products for 2.5-3h at 250-260 DEG C, grinding and then screening, thereby obtaining the ammonium polyphosphate-kieselguhr / nanometer titania compound anti-flaming smoke-suppressing agentfor paper. The anti-flaming smoke-suppressing plant fiber paper base material provided by the invention has better anti-flaming smoke-suppressing property, and is low in production cost and environment-friendly.

Description

technical field [0001] The invention relates to the field of flame-retardant materials, in particular to a flame-retardant and smoke-suppressing packaging cardboard. Background technique [0002] As we all know, plant fiber is a flammable substance. All kinds of plant fiber paper-based materials, including paper packaging materials such as cartons, building materials such as wall paper panels, and indoor paper decoration materials such as wallpapers, are a type of flammable materials that cause fires, and have always been the focus of fire protection work. With the development of society, flame-retardant paper-based materials are used in more and more fields, such as packaging materials, building materials, decorative materials and automotive filter materials, etc. Flame-retardant properties have become the basic requirements of such paper-based materials. performance one. In a fire, the main cause of casualties is the inhalation of the smoke released during the combustion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/12D21H21/14D21H21/34D21H17/69D21H17/68D21H17/67D21H17/66D21H17/55D21H21/10
CPCD21H11/12D21H17/55D21H17/66D21H17/675D21H17/68D21H17/69D21H21/10D21H21/14D21H21/34
Inventor 沙力争赵会芳
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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