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Straw fiber-based biomass composite material and preparation method thereof

A composite material and straw fiber technology, applied in the field of straw-based biomass composite materials and their preparation, can solve the problems of shortage of fiber sources, large specific gravity, low strength, etc., and achieve high social and economic benefits.

Active Publication Date: 2016-02-24
湖南玥昇杰科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of existing wood-plastic composite materials such as low strength, brittleness, high specific gravity, low plant fiber content, high cost, and shortage of fiber sources used, and make full use of agricultural waste straws with short growth cycle and low cost. The advantages of fibrous structure, such as porous and light, are treated by low-oxygen carbonization process, and then mixed with high-density polyethylene (HDPE), combined with other additives, using appropriate process steps and parameters, to obtain a high-performance, Low-cost biomass composite materials, which can be formed into various products by injection molding, extrusion, molding, machining, etc., are widely used in packaging, electronics, communications, furniture, decoration, automobiles, aircraft, military and other fields, replacing Materials such as plastic and logs have good social and economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Take 100 parts (mass parts) of straw with a moisture content of 5% or less and a length of 20 mm or less, 10 parts of 60% acetic acid aqueous solution, 2 parts of diesel oil, blend them evenly, and put them in a sealed vacuum furnace , at a vacuum degree of less than or equal to 50Pa, at a temperature of 200°C, sinter for 15 minutes, then take out and pulverize, sieve to control the particle size at 10 mesh, and set aside

[0013] (2) Take 60 parts of fiber obtained in step (1), 40 parts of HDPE, 1 part of titanate coupling agent, 1 part of aluminate coupling agent, 2 parts of polyethylene glycol, 5 parts of EAA, 1 part of polyethylene wax, 0.5 parts of maleic anhydride, blended in a high-speed mixer for 10 minutes, and set aside.

[0014] (3) Extrude and granulate the mixed materials through a screw extruder, controlling the head temperature to 190°C, head pressure to 3MPa, and screw speed to 80r / min.

[0015] Table 1

[0016]

Embodiment 2

[0018] (1) Take 100 parts (mass parts) of straw with a moisture content of 5% or less and a length of 20 mm or less, 15 parts of acetic acid aqueous solution with a concentration of 65%, and 4 parts of diesel oil, and blend them evenly and put them in a sealed vacuum furnace , at a vacuum degree of less than or equal to 50Pa, at a temperature of 250°C, sinter for 20 minutes, then take out and pulverize, sieve to control the particle size at 20 mesh, and set aside

[0019] (2) Take 70 parts of fiber obtained in step (1), 30 parts of HDPE, 2 parts of titanate coupling agent, 2 parts of aluminate coupling agent, 3 parts of polyethylene glycol, 7 parts of EAA, 2 parts of polyethylene wax, 1 part of maleic anhydride, blended in a high mixer for 20 minutes, set aside.

[0020] (3) Extrude and granulate the mixed materials through a screw extruder, controlling the head temperature to 190°C, head pressure to 3MPa, and screw speed to 80r / min.

[0021] Table 2

[0022]

Embodiment 3

[0024] (1) Take 100 parts (mass parts) of straw with a moisture content of 5% or less and a length of 20 mm or less, 20 parts of 70% acetic acid aqueous solution, and 5 parts of diesel oil, mix them evenly and put them in a sealed vacuum furnace , at a vacuum degree of less than or equal to 50Pa, at a temperature of 300°C, sinter for 30 minutes, then take out and pulverize, sieve to control the particle size at 30 mesh, and set aside

[0025] (2) Take 80 parts of fiber obtained in step (1), 40 parts of HDPE, 3 parts of titanate coupling agent, 3 parts of aluminate coupling agent, 4 parts of polyethylene glycol, 10 parts of EAA, 3 parts of polyethylene wax, 1.5 parts of maleic anhydride, blended in a high mixer for 30 minutes, set aside.

[0026] (3) Extrude and granulate the mixed materials through a screw extruder, controlling the head temperature to 190°C, head pressure to 3MPa, and screw speed to 80r / min.

[0027] table 3

[0028]

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PUM

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Abstract

The invention discloses a straw fiber-based biomass composite material and a preparation method thereof. The method has the advantages of sufficiently utilizing agricultural wastes, short straw growth period, low cost and light porous fiber texture, and comprises the steps of performing mionectic carbonization treatment, then mixing with high density polyethylene (HDPE), matching with other additives and adopting proper processing steps and parameters, granulating through extruding by virtue of a screw rod to obtain the high-performance and low cost biomass composite material. The material can be formed into various products by adopting the methods such as injection molding, extrusion, mould pressing and machine processing, can be widely applied to the fields of packages, electronics, communication, furniture, decoration, automobiles, airplanes, military industry and the like, can replace materials such as plastics and logs, and has very good social and economic benefits.

Description

technical field [0001] The invention relates to a straw-based biomass composite material and a preparation method thereof, belonging to the field of new materials and their molding processing, and the invented product can be used to replace plastics, wood and the like. Background technique [0002] At present, the materials used in the fields of packaging, electronic appliances, home decoration, automobiles, aircrafts, and military industries are mainly petroleum-based plastics, and some logs are used. However, plastics have the disadvantages of being non-biodegradable and polluting the environment. At the same time, the oil resources are limited and not sustainable. The use of a large number of logs will cut down a large number of forests and destroy the ecological environment. Therefore, the combination of plant fibers and some polymer plastics produces a higher-performance wood-plastic composite material, which can replace wood and plastics and alleviate resource shortag...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L23/06C08L23/08C08L71/02C08K5/10
CPCC08L97/02C08L2205/035C08L2207/062C08L23/06C08L23/0869C08L71/02C08K5/10
Inventor 曾广胜
Owner 湖南玥昇杰科技有限责任公司
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