A kind of poplar wood powder-based biomass composite material and preparation method thereof

A composite material and biomass technology, which is applied in poplar wood powder-based biomass composite material and its preparation field, can solve the problems of high cost, low strength, low plant fiber content, etc., and achieve high social and economic benefits

Active Publication Date: 2018-05-18
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, low plant fiber content, and high cost, and make full use of the advantages of poplar wood fiber growth cycle, loose fiber structure, good elasticity, and high strength. Preliminary esterification treatment, then mixed with polystyrene (PS), combined with other additives, using appropriate process steps and parameters, to obtain a high-performance, high-rigidity, low-density, low-cost biomass by screw extrusion 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 plastics and logs , with 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 (parts by mass) of poplar wood flour with a moisture content of 5% or less and a particle size of 20 meshes, 5 parts of anhydrous acetic acid, 5 parts of ethanol with a concentration of 95% or more, and 3 parts of sodium chloride, 200 parts of water, after blending evenly, put it into the reaction kettle, stand at 50°C under normal pressure for 36 hours, then take it out and dry it to make the moisture content 5%, and set it aside for use

[0013] (2) Take 60 parts of fiber obtained in step (1), 40 parts of polystyrene, 5 parts of polyvinyl alcohol, 2 parts of silane coupling agent (KH550), 1 part of chromium chloride complex of methacrylic acid, 3 parts of rosin resin Parts, 3 parts of glycerin, mixed in a high mixer for 10 minutes, 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 80 r / min.

[0015] Table 1

[0016] ...

Embodiment 2

[0018] (1) Take 100 parts (by mass) of poplar wood flour with a moisture content of 5% or less and a particle size of 40 meshes, 8 parts of anhydrous acetic acid, 8 parts of ethanol with a concentration of 95% or more, 4 parts of sodium chloride, 300 parts of water, after blending evenly, put it into the reaction kettle, stand at 60°C under normal pressure for 48 hours, then take it out and dry it to make the moisture content at 7%, and set it aside

[0019] (2) Take 70 parts of fiber obtained in step (1), 30 parts of polystyrene, 7 parts of polyvinyl alcohol, 3 parts of silane coupling agent (KH550), 1.5 parts of chromium chloride complex of methacrylic acid, 5 parts of rosin resin Parts, 4 parts of glycerin, mixed 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 80 r / min.

[0021] Table 2

[0022]

Embodiment 3

[0024] (1) Take 100 parts (parts by mass) of poplar wood powder with a moisture content of 5% or less and a particle size of 80 mesh, 10 parts of anhydrous acetic acid, 10 parts of ethanol with a concentration of 95% or more, and 5 parts of sodium chloride, 400 parts of water, after blending evenly, put it into the reaction kettle, stand at 70°C under normal pressure for 72 hours, then take it out and dry it to make the moisture content 10%, and set it aside

[0025] (2) Take 80 parts of fiber obtained in step (1), 20 parts of polystyrene, 10 parts of polyvinyl alcohol, 5 parts of silane coupling agent (KH550), 2 parts of chromium chloride complex of methacrylic acid, 8 parts of rosin resin Parts, 5 parts of glycerin, mixed 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 80 r / min.

[0027] table 3

[0028] ...

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PUM

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Abstract

The invention discloses a poplar powder based biomass composite material and a preparation method thereof. The preparation method comprises the steps of by making the best of the poplar advantages of short fiber growth cycle, loose fiber structure, good elasticity, high strength and the like, performing preliminary esterification process at an earlier stage, then mixing with polystyrene (PS), matching with other additives, adopting appropriate processing steps and parameters, and palletizing by extrusion by using a screw to obtain the biomass composite material with high performance, high rigidity, low density and low cost. The biomass composite material can be formed into various products by methods of injection molding, extruding, mould pressing, machining and the like, is widely applied to the fields of packaging, electronics, communications, furniture, ornaments, automobiles, war industries and the like, replaces materials such as plastics and logs, and has very good social and economic benefits.

Description

technical field [0001] The invention relates to a poplar wood powder-based biomass composite material and a preparation method thereof, which belongs 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L25/06C08L29/04C08L93/04C08K5/544C08K5/098C08K5/053
CPCC08L97/02C08L2203/20C08L2205/035C08L25/06C08L29/04C08L93/04C08K5/544C08K5/098C08K5/053
Inventor 曾广胜
Owner 湖南玥昇杰科技有限责任公司
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