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Preparation method of surface reactive collagen fiber/polyester composite material

A polyester composite material and composite material technology are applied in the field of preparation of surface-reactive collagen fibers/polyester composite materials, which can solve problems such as obstacles to sustainable development of the leather industry, environmental pollution, etc., achieve good economic and social benefits, and solve Pollution problems, the effect of improving stability

Inactive Publication Date: 2013-04-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the discarded collagen fibers are chromium-containing collagen fibers that are difficult to biodegrade, causing serious pollution to the environment and serious obstacles to the sustainable development of my country's leather industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Adopting the method of mechanical pulverization, the discarded chrome-tanned collagen fibers are pulverized into fine chrome-tanned collagen fibers;

[0017] 2) taking the pulverized chrome-tanned collagen fibers, adding dimethylformamide of 300% by mass of the chrome-tanned collagen fibers and 250% solvent-based polyurethane, and mixing evenly to obtain a mixed slurry;

[0018] 3) adding the above-mentioned mixed slurry into the mould, then soaking in water for 80 minutes until the slurry is completely solidified to obtain a chrome-tanned collagen fiber / polyurethane composite material;

[0019] 4) Take the chrome-tanned collagen fiber / polyurethane composite material out of the mold, put it into clear water and soak for 60 minutes, control the water, then add clear water, and wash with water continuously for 3 times;

[0020] 5) Put the washed chrome-tanned collagen fiber / polyurethane composite material into an aqueous solution containing 10% dechroming agent oxalic ...

Embodiment 2

[0023] 1) Adopting the method of mechanical pulverization, the discarded chrome-tanned collagen fibers are pulverized into fine chrome-tanned collagen fibers;

[0024] 2) taking the pulverized chrome-tanned collagen fiber, adding 200% dimethylformamide and 200% solvent-based polyurethane to the chrome-tanned collagen fiber mass, and mixing evenly to obtain a mixed slurry;

[0025] 3) adding the above-mentioned mixed slurry into the mold, then immersing in water for 120 minutes until the slurry is completely solidified to obtain a chrome-tanned collagen fiber / polyurethane composite material;

[0026] 4) Take the chrome-tanned collagen fiber / polyurethane composite material out of the mold, put it into clear water and soak for 40 minutes, control the water, then add clear water, and wash with water continuously for 3 times;

[0027] 5) Put the washed chrome-tanned collagen fiber / polyurethane composite material into an aqueous solution containing 3% of the dechroming agent sodium ...

Embodiment 3

[0030] 1) Adopting the method of mechanical pulverization, the discarded chrome-tanned collagen fibers are pulverized into fine chrome-tanned collagen fibers;

[0031] 2) taking the pulverized chrome-tanned collagen fiber, adding dimethylformamide of 350% of the mass of the chrome-tanned collagen fiber and 280% solvent-based polyurethane to it, and mixing evenly to obtain a mixed slurry;

[0032] 3) adding the above-mentioned mixed slurry into the mold, then immersing in water for 60 minutes until the slurry is completely solidified to obtain a chrome-tanned collagen fiber / polyurethane composite material;

[0033] 4) Take the chrome-tanned collagen fiber / polyurethane composite material out of the mold, put it into clear water and soak for 30 minutes, control the water, add clear water again, and wash with water continuously for 3 times;

[0034] 5) Put the washed chrome-tanned collagen fiber / polyurethane composite material into an aqueous solution containing 5% dechroming agen...

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PUM

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Abstract

The invention relates to a preparation method of a surface reactive collagen fiber / polyester composite material. In the preparation method, waste chrome-tanning collagen fiber and polyurethane are selected as raw materials, and a chrome-tanning collagen fiber / polyurethane composite material is prepared by a water induced phase-separation method, so that the environmental pollution problem caused by a large amount of waste chrome-tanning collagen fiber is solved; Cr<3+> in the chrome-tanning collagen fiber / polyurethane composite material is removed by a dechromization method to obtain a chrome-free collagen fiber / polyurethane composite material; and the stability of the collagen fiber is improved by a cross-linking method, so as to finally obtain the collagen fiber / polyurethane composite material with the surface reaction performance. By using the preparation method provided by the invention, a large amount of collagen fiber solid wastes are treated, the pollution problem is solved, and the surface reactive composite material with very wide application is produced; and the preparation method has good economic and social benefits.

Description

technical field [0001] The invention relates to the production process of composite materials and the treatment of leather solid waste, in particular to a preparation method of surface-reactive collagen fiber / polyester composite materials. Background technique [0002] The main raw material of the tanning industry is animal hides. At present, only about 200 kilograms of leather can be produced from 1 ton of salt-wet hides, but more than 600 kilograms of solid waste are produced. As the largest leather production base in the world, my country produces about 1.4 million tons of solid waste every year, and about 30% of these solid wastes contain collagen fibers. Most of the discarded collagen fibers are chromium-containing collagen fibers that are difficult to biodegrade, causing serious pollution to the environment and serious obstacles to the sustainable development of my country's leather industry. [0003] However, as a natural biopolymer material, collagen fibers not only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08L75/04C08L89/06
Inventor 马兴元郭勇生
Owner SHAANXI UNIV OF SCI & TECH
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