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Paper reinforcement plant-based composite material and preparation method thereof

A composite material and plant-based technology, which is applied in the field of new reinforced plant-based composite materials and their preparation, can solve the problems of under-emphasized grass resource utilization, insignificant enhancement effect, and high requirements on raw material conditions, and achieves elimination of internal defects and avoidance of surface defects. The effect of damage and production cost reduction

Inactive Publication Date: 2014-01-01
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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  • Paper reinforcement plant-based composite material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] 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 with a degree of polymerization of 1700 and a degree of alcoholysis of 99%. Add silk 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 1 gram of polyvinyl alcohol silk, spread the mixed straw scraps on the paper, repeat this for 3 more times, and finally sprinkle 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 press to 150°C, place the mold fi...

Embodiment 2

[0028]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 with a degree of polymerization of 1700 and a degree of alcoholysis of 99%. Add silk 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 1 gram of polyvinyl alcohol silk, spread the mixed plant scraps on the paper, repeat this 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 hot press to ...

Embodiment 3

[0030] 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 with a degree of polymerization of 1700 and a degree of alcoholysis of 99%. Add silk 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 1 gram of polyvinyl 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 plant material, then spread the last layer of paper, and close the mold . Preheat the platen of the hot press to 150°C, place t...

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Abstract

The invention relates to a novel paper reinforcement plant-based composite material and a preparation method thereof. The composite material consists of plants, paper, bonding agents and polyurethane. The reinforcement method is characterized in that a paper reinforcement inner layer is introduced based on the reinforcement of the surface layer of polyurethane, paper reinforcement raw materials are easily available, waste resources can be recycled, the intensity of the composite material is improved effectively, the hygroscopicity is lowered, and the water resistance is intensified, so that the composite material is ordered in structure and universal in formation. By the preparation method of the composite material provided by the invention, raw materials are simple to treat, and dewaxing and washing are not needed; cellulose is not required to be separated individually, and thus a separation step is omitted; the diffusion of dust in an environment is reduced, and thus the health of operators in the field is protected; the preparation method is high in adaptability and easy to implement. The composite material provided by the invention has wide application, and can replace wood and plastics for manufacturing furniture, toys, containers, automobile decorative parts, daily necessities and the like.

Description

technical field [0001] The invention relates to a novel reinforced plant-based composite material and a preparation method thereof, in particular to a composite material using paper as a reinforcing material and a preparation method thereof, belonging 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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