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Preparation method of sound-absorbing flame-retardant fiber composite material

A fiber composite material, flame retardant technology, applied in fiber raw material processing, synthetic cellulose/non-cellulose material pulp/paper, non-fiber pulp addition, etc. Large, low bulk, etc., to ensure the appearance and performance, improve the bulk and porosity, and increase the effect of absorbency

Pending Publication Date: 2019-10-11
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the late start of domestic research on fiber-type sound-absorbing and flame-retardant materials, although some basic research has been carried out and some progress has been made, there are still many problems in the production practice process, especially compared with foreign products, domestic The sound-absorbing and flame-retardant products have the disadvantages of high tightness, low bulk, high material brittleness, and flame retardants are easy to absorb moisture and have poor sound-absorbing effects. Glass fiber and plant fiber are selected, based on the technical theory of special paper production, to explore suitable The production process can obtain fiber composite materials with light weight and excellent sound-absorbing and flame-retardant properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Refining: soak the coniferous wood pulp board in water for more than 4 hours, then use a PFI refiner to refine the pulp so that the degree of beating is 18°SR, wring out the pulp, and balance the moisture for at least 24 hours to obtain coniferous wood pulp;

[0027] 2) Put 60% of softwood pulp, 30% of glass fiber and 10% of hardwood APMP pulp in the deflaking machine and add water according to the mass percentage, and after decomposing for 1w, glass fiber and plant fiber with beating degree of 15°SR are obtained mixed pulp, wherein the fiber length of coniferous wood pulp is 5-6 mm, the length of glass fiber is 6-8 mm, and the width is 9-15 μm, and the fiber length of hardwood APMP pulp is 2-3 mm;

[0028] 3) Paper making: add 0.5% of its mass cationic retention aid to the mixed slurry, and make paper paper on a paper sample machine, and the weight of the paper is 45-50g / m 2 ;

[0029] 4) Drying: Put the wet paper web formed by copying into a hot air circulation dr...

Embodiment 2

[0034] 1) Refining: soak the coniferous wood pulp board in water for more than 4 hours, then use a PFI refiner to refine the pulp so that the degree of beating is 23 ° SR, wring the pulp dry, and balance the moisture for at least 24 hours to obtain coniferous wood pulp;

[0035] 2) Put 40% of softwood pulp, 40% of glass fiber and 20% of hardwood APMP pulp in the deflaking machine and add water according to the mass percentage, and after decomposing for 1w, glass fiber and plant fiber with beating degree of 15°SR are obtained mixed pulp, wherein the fiber length of coniferous wood pulp is 5-6 mm, the length of glass fiber is 6-8 mm, and the width is 9-15 μm, and the fiber length of hardwood APMP pulp is 2-3 mm;

[0036] 3) Paper making: add 0.5% of its mass cationic retention aid to the mixed slurry, and make paper paper on a paper sample machine, and the weight of the paper is 45-50g / m 2 ;

[0037] 4) Drying: Put the wet paper web formed by copying into a hot air circulation ...

Embodiment 3

[0042] 1) Refining: soak the coniferous wood pulp board in water for more than 4 hours, then use a PFI refiner to refine the pulp so that the degree of beating is 25 ° SR, and wring the pulp dry, and the equilibrium moisture is at least 24 hours to obtain coniferous wood pulp;

[0043]2) Put 60% of softwood pulp, 20% of glass fiber and 20% of hardwood APMP pulp in a deflaking machine and add water according to the mass percentage, and after decomposing for 1w, glass fiber and plant fiber with a degree of beating of 28 ° SR are obtained mixed pulp, wherein the fiber length of coniferous wood pulp is 5-6 mm, the length of glass fiber is 6-8 mm, and the width is 9-15 μm, and the fiber length of hardwood APMP pulp is 2-3 mm;

[0044] 3) Papermaking: add 0.8% of its mass cationic retention aid to the mixed slurry, and make paper on the paper sample machine, and the weight of the paper is 45-50g / m 2 ;

[0045] 4) Drying: put the wet paper web formed by copying into a hot air circul...

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Abstract

The invention relates to a preparation method of a sound-absorbing flame-retardant fiber composite material. The method comprises the following steps of pulp selection, pulping, pulp preparation, papermaking, drying and impregnation. Pulp of the sound-absorbing flame-retardant fiber composite material comprises 30-70% of bleached softwood pulp, 20-40% of glass fibers and 10-30% of hardwood pulp, wherein the beating degree of the softwood is 18-30 degrees SR, and the beating degree of the hardwood pulp is 13-25 degrees SR. Then, 0.5-2% of a plasticizer, 1-3% of an adhesive and 3-5% of a flame retardant are adopted for impregnation. According to the method, various measures are combined to prepare the fiber composite material which is light in texture, good in air permeability and excellentin sound absorption performance and flame retardance performance, the application field of the glass fibers is widened, and the method has important significance in the development and cost reductionof novel building decoration materials.

Description

technical field [0001] The invention relates to the field of special paper-based functional materials, in particular to a preparation method of a sound-absorbing and flame-retardant fiber composite material that can be used as a building decoration material. Background technique [0002] The mixture of glass fiber and plant fiber can effectively play the respective advantages of glass fiber and plant fiber. Glass fiber is a widely used composite material with excellent characteristics such as light weight, high strength, corrosion resistance, electrical insulation, heat insulation and sound absorption, and high cost performance. . Natural fiber (such as plant fiber) has a wide frequency band of sound absorption and can effectively absorb noise, but its fire resistance and heat insulation performance is poor, it is easy to cause fire, and its application range is limited. Therefore, it is necessary to study composite materials with both sound-absorbing and flame-retardant pr...

Claims

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Application Information

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IPC IPC(8): D21H11/02D21H13/40D21H21/10D21H21/14D21H21/34D21H19/12D21H25/06D21D1/20D21F13/00
CPCD21D1/20D21F13/00D21H11/02D21H13/40D21H17/71D21H19/12D21H21/10D21H21/14D21H21/34D21H25/06
Inventor 徐永建李伟王敏刘燕段叶荣
Owner SHAANXI UNIV OF SCI & TECH
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