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Preparation method of paper reinforced plant-based composite material

A composite material and plant-based technology, which is applied in the field of plant-based composite material manufacturing, can solve the problems of ignoring grass resource utilization, insignificant enhancement effect, and high requirements for raw material status, so as to eliminate internal defects, avoid surface damage, and reduce production costs. Effect

Inactive Publication Date: 2016-01-06
JIUJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Plant-based composites have two important disadvantages, one is low strength, and the other is high hygroscopicity and poor water resistance
There are some problems in the existing preparation methods of plant-based composite materials: or the pretreatment of raw materials is complicated, or the whole process is complicated, or the enhancement method is expensive, or the enhancement effect is not obvious, or the utilization of grass resources is not paid attention to, or the relationship with Utilization of bonding materials similar to plant cellulose structures, or high requirements on the state of raw materials

Method used

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  • Preparation method of paper reinforced plant-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The straw is sun-dried to constant weight and crushed into a mixture of chips and powder by a hay cutter. Weigh 1000 grams of pulverized raw materials, put them in a stirring tank, add 200 mL of water, and stir for 5 minutes to make the surface of the plant raw materials evenly wetted, then weigh 250 grams of polyvinyl alcohol silk with a degree of polymerization of 1700 and a degree of alcoholysis of 99%. Add it to the raw material tank, stir for 5 minutes to mix the plant raw material and the adhesive evenly, put the mixed material into a stainless steel mold whose surface is wetted with water, lay a layer of paper inside the mold, and evenly sprinkle 5 grams of polyethylene on the paper Alcohol silk, spread the mixed straw scraps on the paper, repeat this process for 3 more times, and finally sprinkle a layer of 5 grams of polyvinyl alcohol silk on the top layer of the plant material, then spread the last layer of paper, and close the mold. Preheat the platen of the ...

Embodiment 2

[0027]The grass cut from the lawn is dried to constant weight and crushed into a mixture of chips and powder by a hay cutter. Weigh 1000 grams of pulverized raw materials, put them in a stirring tank, add 200 mL of water, and stir for 5 minutes to make the surface of the plant raw materials evenly wetted, then weigh 250 grams of polyvinyl alcohol silk with a degree of polymerization of 1700 and a degree of alcoholysis of 99%. Add it to the raw material tank, stir for 5 minutes to mix the plant raw material and the adhesive evenly, put the mixed material into a stainless steel mold whose surface is wetted with water, lay a layer of paper inside the mold, and evenly sprinkle 5 grams of polyethylene on the paper Alcohol silk, spread the mixed plant scraps on the paper, repeat this process for 3 more times, and finally sprinkle a layer of 5 grams of polyvinyl alcohol silk on the top layer of the plant material, then spread the last layer of paper, and close the mold. Preheat the p...

Embodiment 3

[0029] The straw is sun-dried to constant weight and crushed into a mixture of chips and powder by a hay cutter. Weigh 1000 grams of pulverized raw materials, put them in a stirring tank, add 200 mL of water, and stir for 5 minutes to make the surface of the plant raw materials evenly wetted, then weigh 250 grams of polyvinyl alcohol silk with a degree of polymerization of 1700 and a degree of alcoholysis of 99%. Add it to the raw material tank, stir for 5 minutes to mix the plant raw material and the adhesive evenly, put the mixed material into a stainless steel mold whose surface is wetted with water, lay a layer of paper inside the mold, and evenly sprinkle 5 grams of polyethylene on the paper Alcohol silk, spread the mixed straw scraps on the paper, repeat this process once more, and finally sprinkle a layer of 5 grams of polyvinyl alcohol silk on the top layer of the plant material, then spread the last layer of paper, and close the mold. Preheat the platen of the hot pre...

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Abstract

The invention relates to a novel paper-reinforced plant-based composite material and a preparation method thereof. The composite material is composed of plants, paper, adhesives and polyurethane. The reinforcement method is to introduce the inner layer of paper reinforcement on the basis of polyurethane surface layer reinforcement. The source of paper reinforcement raw materials is convenient, which can realize the reuse of waste resources, and effectively improve the strength of composite materials, reduce hygroscopicity, and enhance water resistance. The structure of the composite material is more orderly and the composition is more diverse. The preparation method of the composite material in the present invention has simple raw material treatment, no dewaxing, no washing, no separate separation of cellulose, reduced separation steps, reduced dispersion of powder in the environment, and protected the health of on-site operators. Strong and easy to implement. The composite material of the present invention has wide applications, and can be used in the manufacture of furniture, toys, containers, automobile decoration parts, daily necessities, etc. instead of wood and plastics.

Description

technical field [0001] The invention relates to a preparation method of a novel reinforced plant-based composite material, in particular to a preparation method of a composite material using paper as a reinforcing material, and belongs to the field of plant-based composite material manufacturing. Background technique [0002] Making full use of renewable plant resources to develop environmentally friendly composite materials to replace wood or plastic is an important way to solve resource shortages, energy crises, and environmental pollution, and is an important way to reduce the greenhouse effect and promote ecological and economic development. my country is a big agricultural country, and wheat and rice are the main food crops in our country. A large amount of wheat straw and rice straw are produced after grain harvesting, and a large part of these agricultural by-products are burned in the field, seriously polluting the air and wasting resources and energy. Wheat straw a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B29/00B32B27/10B32B27/40B32B9/02B32B7/12B32B37/10B32B38/04
Inventor 吴传保周玉俊曾湘晖刘利江
Owner JIUJIANG UNIVERSITY
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