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Glass fiber reinforcement wheat straw or rice straw composite material and preparation method thereof

A glass fiber and composite material technology, applied in the field of agricultural by-product processing and utilization, can solve the problems of low strength of composite materials, and achieve the effects of reducing fluidity, reducing harm to human environment, and reducing the release of volatile pollutants

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

However, the strength of wheat straw and straw composite materials produced by molding method is low, and the development of reinforced wheat straw or straw composite materials based on molding method and its preparation method is an important way to broaden the application field of such composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]After the wheat straw was dried, it was sheared for 5 minutes in an anchor-type stirring shearer to obtain wheat straw scraps. Take by weighing 100 grams of wheat straw scraps, place them in a mixing tank, and under stirring conditions, spray 20 milliliters of polyacrylate aqueous emulsion with a solid content of 5% in the wheat straw scraps, and wait to stir evenly, that is, the surface of the wheat straws is moistened by the water emulsion. After wetting, add 15 grams of chopped glass fiber strands with a length of 1 cm and stir well; then add 60 grams of polyvinyl alcohol powder with a degree of polymerization of 1700 and a degree of alcoholysis of 88%, and stir well; then add 15 grams of active calcium carbonate, stir well. Brush a layer of vegetable oil on the inner surface of the stainless steel mold, and then stick a layer of paper on the inner surface. Put the material into the mold and close the mold. Place the mold filled with materials between platens at a t...

Embodiment 2

[0030] After the straw was dried in the sun, it was chopped into 7 cm straw segments, and then cut for 5 minutes in an anchor agitating shearer to obtain a mixture of straw fragments in various forms. Weigh 100 grams of crushed material, place it in a mixing tank, and under stirring conditions, spray 10 ml of polyacrylate aqueous emulsion with a solid content of 5% into the wheat straw crushed material, and wait until it is evenly stirred, that is, the surface of the wheat straw is wetted by the water emulsion Finally, add 30 grams of chopped glass fiber precursors with a length of 1 cm, stir well; then add 80 grams of frozen and pulverized polystyrene powder, stir well; then add 10 grams of active calcium carbonate under stirring conditions, stir well. Brush a layer of vegetable oil on the inner surface of the stainless steel mold, and then stick a layer of paper on the inner surface. Put the material into the mold and close the mold. Place the mold filled with materials bet...

Embodiment 3

[0032] After the wheat straw is dried, the wheat straw scrap is prepared through a straw grinder. Take 15 grams of glass fiber strands with a length of 2 cm, put them in a glass container, add 100 mL of absolute ethanol to it, raise the temperature to 60 ° C, soak the glass fibers in it for 10 min, then decant and separate, and dry at 60 ° C for use. Take by weighing 100 grams of wheat straw scraps, place them in a mixing tank, and under stirring conditions, spray 20 milliliters of polyacrylate aqueous emulsion with a solid content of 5% in the wheat straw scraps, and wait to stir evenly, that is, the surface of the wheat straws is moistened by the water emulsion. After wetting, add 15 grams of chopped glass fiber precursors soaked in hot ethanol with a length of 2 cm and stir well; then add 60 grams of polyvinyl alcohol powder with a degree of polymerization of 1700 and a degree of alcoholysis of 88%, and stir well; Add 15 grams of active calcium carbonate under stirring cond...

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Abstract

The invention relates to a glass fiber reinforcement wheat straw or rice straw composite material and a preparation method thereof. The composite material comprises wheat straws or rice straws, glass fiber, polymer and additives, wherein the mass content of components except for the additives is 90%-100%, and the mass content of the additives is 0%-10%; the mass ratio of the wheat straws or rice straws to the glass fiber to the polymer except for the additives is 100:(10-40):(50-140). The glass fiber for reinforcement is chopped glass fiber strands with the length of 1cm-3cm. The glass fiber is directly or soaked, or treated directly or soaked and then subjected to surface coating so as to be used; the materials are directly mixed in the using process, and the mixing capability of materials can be reinforced by means of a solution or emulsion. The glass fiber is not subjected to strong shearing before hot pressing, thus keeping a good shape. The composite material prepared by adopting the method is high in strength, smooth in the surface, and uniform in performance; the preparation method is simple and efficient and strong in environment-friendliness.

Description

technical field [0001] The invention relates to a glass fiber reinforced wheat straw or rice straw composite material and a preparation method thereof, belonging to the field of processing and utilization of agricultural by-products. Background technique [0002] Wheat, rice, etc. are the main food crops in my country, with a wide planting area and large output. While harvesting wheat and rice every year, a large amount of by-products of wheat straw and rice straw are produced. Before the 1990s, the mechanization level of agricultural planting in my country was low, and the urbanization rate was low. Livestock farming was generally used in rural areas, and wheat straw and rice straw were used to make fire for cooking. The vast majority of straw and straw are consumed for feeding livestock and as domestic fuel. However, after the 1990s, this situation has changed. On the one hand, the level of mechanized farming in rural areas has been continuously improved, the amount of l...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L25/06C08L23/12C08L23/06C08L29/04C08L77/06C08L67/00C08K9/06C08K9/04C08K7/14C08K3/26
Inventor 吴传保钟婵娟曾湘晖
Owner JIUJIANG UNIVERSITY
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