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Method for preparing wood-plastic material from bean dregs

A technology of wood-plastic materials and bean dregs, which is applied in the field of composite materials, can solve problems such as high cost, high energy consumption, and environmental pollution, and achieve the effects of improved performance, low pollution, and simple operation

Active Publication Date: 2019-08-06
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses silane coupling agent to modify wood fiber, which leads to high energy consumption, environmental pollution and high cost

Method used

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  • Method for preparing wood-plastic material from bean dregs
  • Method for preparing wood-plastic material from bean dregs
  • Method for preparing wood-plastic material from bean dregs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, the influence of modification mode on the performance of wood-plastic material

[0045] This embodiment is based on the following preparation process:

[0046] (1) Place the wet bean dregs outdoors, dry naturally, collect the bean dregs powder crushed to more than 40 mesh, add industrial hexane to extract and degrease, collect the precipitate, and dry;

[0047] (2) Treatment methods 1-3 adopt different methods to modify the okara powder.

[0048] (3) The okara powder collected in the step 2 of 45 parts by weight is mixed with the HDPE5000S of 40 parts by weight, the maleic anhydride grafted polypropylene of 3 parts by weight, the stearic acid of 1 part by weight, the ethylene glycol of 1 part by weight Ethyl bis stearic acid amide, the calcium carbonate powder of 10 parts by weight are mixed homogeneously;

[0049] (4) Place the mixture obtained in step 3 in an open mixer, heat-melt and mix at a high temperature of 180° C. for 4 minutes, and place the pr...

Embodiment 2

[0058] Embodiment 2, the influence of plastic ratio on the performance of wood-plastic material

[0059] This embodiment is based on the following preparation process:

[0060] (1) Put the wet bean dregs outside, collect the bean dregs powder crushed to more than 40 mesh after natural air-drying, add industrial hexane to extract and degrease, collect the precipitate, and dry;

[0061] (2) Dry and pulverize the precipitate in step 1, add water according to the ratio of 1:20g / mL to water, adjust the pH to 12, react in a constant temperature shaking water bath at 80°C for 2 hours, collect the precipitate, dry and pulverize to above 40 mesh.

[0062] (3) the processed okara powder collected in step 2 and HDPE5000S, 3 parts by weight of maleic anhydride grafted polypropylene, 1 part by weight of stearic acid, 1 part by weight of ethylene bis stearic acid amide, 10 parts by weight of calcium carbonate powder are uniformly mixed; treatment modes 1 to 4 respectively use different par...

Embodiment 3

[0069] Embodiment 3, the influence of plastic type on the performance of wood-plastic material

[0070] This embodiment is based on the following preparation process:

[0071] (1) Put the wet bean dregs outside, collect the bean dregs powder crushed to more than 40 mesh after natural air-drying, add industrial hexane to extract and degrease, collect the precipitate, and dry;

[0072] (2) Dry and pulverize the precipitate in step 1, add water according to the ratio of 1:20g / mL to water, adjust the pH to 12, react in a constant temperature shaking water bath at 80°C for 2 hours, collect the precipitate, dry and pulverize to above 40 mesh.

[0073] (3) The okara powder collected in the step 2 of 45 parts by weight and the thermoplastic material of 40 parts by weight, the maleic anhydride grafted polypropylene of 3 parts by weight, the stearic acid of 1 part by weight, the stearic acid of 1 part by weight 10 parts by weight of ethylene bis stearic acid amide (EBS) and 10 parts by...

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Abstract

The invention discloses a method for preparing a wood plastic composite from bean dregs. The method comprises the following steps: bean dreg powder is degreased and modified through hot alkali treatment, a product is then mixed uniformly with plant fiber powder, thermoplastic, a compatilizer, inorganic mineral powder and a lubricant, the materials are subjected to hot-melt mixing at 150-180 DEG C, the mixture is subjected to hot pressing and cold pressing finally, and the wood plastic composite is obtained. The wood plastic composite is prepared through degreasing, alkaline hydrolysis modification of the bean dregs, addition of the plant fiber powder, high-temperature melting and high-pressure treatment process for the first time, so that the performance of the wood plastic composite is improved substantially, market requirements and standards can be met, the wood plastic composite has low energy consumption and cost, produces little pollution and is simple to operate, and one feasible way is provided for optimization of the performance of the bean dreg based wood plastic composite.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a method for preparing wood-plastic materials from bean dregs. Background technique [0002] Okara, as a biowaste in the soybean processing industry, still has high economic value. At present, about 20 million tons of bean dreg waste is produced in my country every year, which is usually only used as feed or directly discarded, and has not been well developed and utilized. The content of dietary fiber and protein in bean dregs accounts for more than 80%. How to use bean dregs reasonably and efficiently has become an urgent problem to be solved in the soybean processing industry. [0003] Wood-plastic material (WPC) is a modified thermoplastic material filled and reinforced with wood fiber or plant fiber. Compared with traditional wood and plastic, it has the advantages of anti-corrosion, moisture-proof, high dimensional stability and strong processability. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L23/06C08L51/06
CPCC08L97/02C08L2205/025C08L2205/03C08L2205/035C08L2205/16C08L2207/062C08L23/06C08L51/06
Inventor 熊强陈海超于春涵宗丹陈集双
Owner NANJING TECH UNIV
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