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Preparation method for completely biodegradable environment-friendly composite material

A composite material, complete degradation technology, applied in the field of preparation of environmentally friendly composite materials, can solve the problems of limited utilization of plant resources, low proportion of plant raw materials, high requirements for raw material processing, etc., to ensure degradability and biological safety , protect the health, the effect of high size

Inactive Publication Date: 2015-06-17
JIUJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] There have been some reports on the preparation of composite materials from plant stalks, stems and leaves, and seed husks, but there are some problems that the types of plant resources are not widely used, only part of the organs of plants are used, the processing requirements of raw materials are high, the preparation process is cumbersome, the ingredients are complex, and plants Raw materials are often used as fillers, the proportion of plant materials in composite materials is low, and the combination with non-degradable polymer materials makes the degradability insufficient, etc.

Method used

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  • Preparation method for completely biodegradable environment-friendly composite material
  • Preparation method for completely biodegradable environment-friendly composite material
  • Preparation method for completely biodegradable environment-friendly composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The waste grass obtained by trimming the lawn is dried and cut into short cuts with a length of about 4.0 cm, and sheared in a four-blade turbo-type mechanical stirring mixer for 5 minutes. Weigh 1000 grams of sheared material and place it in a mixing tank, add 400 mL tap water, and stir for 5 minutes to make the surface of the grass evenly wet, then weigh 200 grams of corn starch, add it to the raw material tank, and stir for 5 minutes to bond the grass Mix the agent evenly. Apply a thin layer of rapeseed oil on the surface of the mold, place mold release paper in the lower mold, then put the mixture into the mold, and then cover a layer of mold release paper on the material, and cover the mold. Place the mold containing the material between the pressure plates at a temperature of 135°C, pressurize to 12MPa, hot press for 10 minutes, remove the mold, cool to 30°C and open the mold to obtain a completely degradable environmentally friendly composite material, composite m...

Embodiment 2

[0041] The soybean stalks were sun-dried, chopped into chopped materials of 2.0 cm, and sealed and sheared for 20 minutes in a four-blade turbo mechanical stirring mixer. Weigh 1000 grams of cut material, place it in a mixing tank, add 200 mL of starch solution with a mass content of 2%, stir for 5 minutes, so that the surface of the cut material of soybean stalks is evenly wetted, then weigh 300 grams of corn starch, add In the raw material tank, stir for 10 minutes to mix the plant raw materials and the adhesive evenly. Apply a thin layer of rapeseed oil on the surface of the mold, place mold release paper in the lower mold, then put the mixture into the mold, and then cover a layer of mold release paper on the material, and cover the mold. Place the mold with the material between the pressure plates at 140°C, pressurize to 20MPa, hot press for 15min, remove the mold, cool to 30°C and open the mold to obtain a completely degradable environmentally friendly composite material,...

Embodiment 3

[0043] The cotton stalks were dried in the sun, chopped into chopped materials of 2.0 cm, and sheared for 20 minutes in a four-blade turbo mechanical stirring mixer. Weigh 1000 grams of sheared material, place it in a mixing tank, add 200 mL of starch solution with a mass content of 2%, and stir for 5 minutes to make the surface of the cotton stalk sheared material evenly wetted, then weigh 300 grams of corn starch, add In the raw material tank, stir for 10 minutes to mix the plant raw materials and the adhesive evenly. Apply a thin layer of rapeseed oil on the surface of the mold, place mold release paper in the lower mold, then put the mixture into the mold, and then cover a layer of mold release paper on the material, and cover the mold. Place the mold with the material between the pressure plates at 140°C, pressurize to 20MPa, hot press for 15min, remove the mold, cool to 30°C and open the mold to obtain a completely degradable environmentally friendly composite material, c...

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Abstract

The invention relates to a completely biodegradable environment-friendly composite material and a preparation method thereof. The environment-friendly composite material is prepared from raw materials including straws, seed shells, stems, leaves of crops and other plants, as well as an environment-friendly binder and a mixing medium through a hot pressing method. The straws, the seed shells, the stems and the leaves are main components of the composite material and account for 50-90% by weight. When the environment-friendly composite material is prepared, the plant raw materials are firstly dried to enable the water content in the raw materials to be lower than 5%, then short cutting, stirring type shearing, mixing with the mixing medium, mixing with the binder, hot pressing, post-treatment and other steps are sequentially performed for realizing the preparation, the production process has the advantages of simplicity, no emission of pollutants, operation in a closed system and no dust pollution, and each step has higher production efficiency. The prepared environment-friendly composite material can be used for manufacturing support parts of toys, furniture, containers, internal packing boxes and compound type food packing boxes, indoor decoration and decorative materials, advertisement materials in buildings, and the like.

Description

Technical field [0001] The invention relates to a method for preparing an environmentally friendly composite material, in particular to a method for preparing an environmentally friendly composite material with complete degradation. Background technique [0002] Resource shortage and environmental pollution are by-products in the process of economic and social development. As the pace of economic development continues to accelerate, resource shortages and environmental pollution are also increasing, which has become a stumbling block to economic and social development. The shortage of resources increases the cost of development; environmental pollution damages air resources, water resources, and soil resources, and further damages human health and normal social life. Resource shortage and environmental pollution have become serious problems facing all countries in the world, especially developing countries. In this case, making full use of renewable resources and developing env...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L3/02C08L3/06C08L1/02C08L1/26
Inventor 吴传保曾湘晖尹健美刘利江
Owner JIUJIANG UNIV
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