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Full-biodegradation ceratin fiber reinforced and fireproof modified polylactic acid material and preparation method thereof

A technology of keratin fiber and polylactic acid material, which is applied in the field of fully biodegradable keratin fiber reinforcement and heat-resistant modified polylactic acid material and its preparation, can solve the problems of refractory degradation, complex formula and high cost, and avoid price , Improve the heat distortion temperature and mechanical strength, and reduce the effect of material cost

Active Publication Date: 2012-06-20
广州福原生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is based on the existing polylactic acid polymer modified materials mainly rely on petroleum-based components and have problems such as complex formula, high cost, and difficulty in complete degradation , to provide a modified polylactic acid material that can be completely degraded, has a wide range of raw material sources, is renewable, has a simple production process, is low in price, and has excellent performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Collect human hair, wash it with surfactant after removing impurities, rinse it with tap water, and dry it in an oven at 80°C.

[0054] (2) Soak the washed and dried human hair raw material in 30% hydrogen peroxide that is twice the volume of the raw material and half the volume of the raw material

[0055] In the mixed solution of concentrated ammonia water, stir at room temperature for 15 minutes to remove the pigment, then wash with tap water, dry with hot air at 80°C, then pulverize and pass through a 20-mesh sieve to obtain keratin fibers.

[0056] (3) According to the mass ratio of keratin fiber and modification reagent 10:1, add modification reagent: trimethylchlorosilane to keratin fiber, stir at high speed at room temperature, and then seal and keep warm at 50°C for 2 hours to obtain modification Keratin fibers are filtered and squeezed to form a filter cake.

[0057] (4) Weigh according to the following mass percentages: 82.0% polylactic acid, 3.0% ethyle...

Embodiment 2

[0060] (1) Collect waste wool, wash it with surfactant after removing impurities, and then rinse it with tap water and drain it.

[0061] (2) Soak the washed wool in 10% hydrogen peroxide solution, stir it at room temperature for 1 hour, wash it with tap water, then dry it with hot air at 100°C, then crush it and pass it through a 10-mesh sieve to obtain wool keratin fibers .

[0062] (3) According to the mass ratio of keratin fibers and modification reagents 10:0.5, respectively add wool keratin fibers and modification reagents: trimethylchlorosilane, hexamethylenedisilazane (three kinds The ratio of the material is 30:1:0.5), after stirring at a high speed at room temperature, the reaction is sealed and kept at 50°C for 2 hours, and the modified keratin fiber of wool is obtained, which is filtered and squeezed to form a filter cake.

[0063] (4) Weigh according to the following mass percentage ratio: 70.0% polylactic acid, 2.0% ethylene bisoleic acid amide, 1.5% stearic aci...

Embodiment 3

[0066] (1) Collect chicken feathers, remove impurities, wash with surfactant, rinse with tap water, and dry in an oven at 80°C.

[0067] (2) Soak the washed chicken feathers in a mixed solution of 30% hydrogen peroxide and concentrated ammonia water (volume ratio 3:1), stir at room temperature for 15 minutes to remove the pigment, then squeeze to filter out water, and add 2 times the volume of 10% hydrochloric acid, fully stirred and then reacted at room temperature for 0.5h, then press-filtered, washed, dried with hot air at 100°C, and then crushed through a 200-mesh sieve to obtain keratin fibers.

[0068] (3) Add the modifying reagent epichlorohydrin according to the mass ratio of keratin fiber to modifying reagent 10:1, stir at a high speed at room temperature, seal and keep warm at 60°C for 4 hours to prepare modified keratin fiber, press filter, Squeeze dry into filter cake.

[0069] (4) Weigh according to the following mass percentages: 60.0% polylactic acid, 3.5% e...

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Abstract

The invention discloses a full-biodegradation ceratin fiber reinforced and fireproof modified polylactic acid material and a preparation method thereof. Polylactic acid is utilized as a basic resin material and combined with ceratin fibers, long-chain aliphatic-serie amide compound, bio-based ultraviolet stabilizer, natural oxidation inhibitor and impact modifier so as to realize reinforcement and fireproof modifying of the polylactic acid material. The modified polylactic acid material is applicable to mass production of various environment-friendly full-biodegradation plastic products or compounds with natural composite plant pigments to produce full-biodegradation ceratin fiber reinforced and fireproof modified polylactic acid plastic products capable of displaying colors. The requirements of processing performances of the preparation method of the modified polylactic acid material for foaming, extrusion molding, film blowing, blow molding, blister, injection molding, rotational molding and the like of sheets, plates, tubing, section bars or other plastic products can be completely met by universal equipment. The full-biodegradation ceratin fiber reinforced and fireproof modified polylactic acid material is a novel polylactic acid material which is high in performance, low in cost and capable of being subjected to complete biodegradation.

Description

[0001] technical field [0002] The invention relates to a polylactic acid material and a preparation method thereof, in particular to a fully biodegradable keratin fiber reinforced and heat-resistant modified polylactic acid material and a preparation method thereof. Background technique [0003] At present, the research on polylactic acid modified plastics at home and abroad mainly focuses on heat-resistant modification, reinforcement modification and blending modification to reduce production costs. [0004] Hair keratin is a renewable natural protein and biological fiber resource with a huge amount of content. The keratin produced only from the hair feathers of pigs, cattle, sheep, chickens, ducks, geese and other domestic animals in my country is as high as hundreds of thousands of tons every year. , and a large number of other sources including animal horns, hooves, and human hair. The output in nature is second only to polymer materials such as cellulose, chitin, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L89/04C08K5/20C08K5/134C08K5/1535
Inventor 谢德明谭卓华
Owner 广州福原生物科技有限公司
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