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Soya protein plastic with water polyurethane modification and preparing method thereof

A water-based polyurethane and soybean protein technology, which is applied in the fields of polymer material chemistry and ecological environment, can solve the problems of water resistance, limitation, and high brittleness of soybean protein plastics, and achieve low water absorption, outstanding performance, and increased mechanical strength.

Inactive Publication Date: 2005-02-23
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the practical application of soybean protein plastics is limited due to its own shortcomings of high brittleness and water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1: A water-based polyurethane modified soybean protein plastic, its basic composition is: 20% anionic water-based polyurethane, 80% water-based soybean protein isolate, the above percentages are mass percentages, and the code is M20.

Embodiment 2

[0010] Example 2: A water-based polyurethane modified soybean protein plastic, its basic composition is: 40% anionic water-based polyurethane, 60% water-based soybean protein isolate, the above percentages are mass percentages, and the code is M40.

Embodiment 3

[0011] Embodiment 3: A water-based polyurethane modified soybean protein plastic, its basic composition is: 30% anionic water-based polyurethane, 70% water-based soybean protein isolate, the above percentages are mass percentages.

[0012] With anionic water-based polyurethane (20wt%, Shore hardness of film: 10~20 degrees, Laohekou Leather Chemical Company) and water-based soybean protein isolate (Hubei Yunmeng Longyun Protein Food Co., Ltd.) by 2: 8, 3: 7 , 4:6 ratio mixing and stirring for 0.5h, casting on a polytetrafluoroethylene mold, drying in an oven at 50°C for 20-30h to obtain a solid mixed sample, and then put the solid mixed sample into 0.5M acetic acid (HOAc) aqueous solution Soak for 24 hours, take out the test piece, put it in an oven, dry it at 50°C for 1 hour, store it at room temperature for a week in a saturated saline steam environment, and finally heat-press the sample at 20MPa and 110-130°C for 10 minutes to make a 0.3mm thick test piece. See Table 1 for t...

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Abstract

Invention this involve one modify soybean protein plastics and prepare the method, it makes up basically: 10-40% of the anion summing skill polyurethane, 60-90% is: Swimming skill soybean separate the protein, the above-mentioned percentage are the quality percentage. It prepares the method: Swimming skill polyurethane, swimming skill soybean separate protein machinery is mixed in certain proportion, dry to make solid mix sample, put on getting sour aqueous solution soak second, room attentive to put one week under the enviroment of saturation salt steam after being dry, the hot pressing gets a slice of material of plastics. Material this simple, pollution-free production technology have, but also have good mechanics performance, a low one absorb water rate and a high one getting waterproof, mechanics intensity increase 3 compared with glycerine plastification soybean protein plastics, the absorbing water rate is reduced to 1 / 6. So this composite is a kind of new-type green material of biodegradation with development potentiality.

Description

technical field [0001] The invention relates to a biodegradable modified soybean protein plastic and a preparation method thereof, which belongs to the field of polymer material chemistry and also belongs to the field of ecological environment. Background technique [0002] Due to the increasing consumption of non-renewable resources and the widespread use of synthetic materials based on petrochemical raw materials, the environmental pollution has become increasingly serious. Therefore, the development and utilization of renewable resources-natural polymers have attracted more and more attention. In recent years, the emerging "industrial protein plastics industry" using soybean protein isolates as raw materials is in the ascendant, and its main research and development focus on preparing soybean protein plastics by thermocompression molding (Rakesh Kumar, VeenaChoudhary, Saroj Mishra, I.K.Varma, Bo Mattiason.Adhesives and plastics based onsoy protein products, Industrial Cro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00
Inventor 张俐娜王念贵
Owner WUHAN UNIV
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