Low-temperature-resistant composite plastic wood and preparation method thereof

A technology of low temperature resistance and plastic wood, applied in the field of plastic wood materials, can solve the problems of numerous reagents, poor compatibility, and unsatisfactory low temperature resistance of plastic wood

Inactive Publication Date: 2018-12-07
安徽爱瑞德新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the poor compatibility between plant fibers and resin matrix, the low temperature resistance of plastic wood is not ideal, which limits the application range and application effect of wood plastic materials. Good low temperature resistance, and then improve the overall low temperature resistance of plastic wood, i...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The invention provides a method for preparing low-temperature-resistant composite plastic wood, which includes the following steps:

[0016] (1) mixing the plant fiber with the cellulose C1 enzyme solution, and then spraying the esterification modifier for further modification to obtain the modified plant fiber;

[0017] (2) Mixing the modified plant fiber with a coupling agent, polyvinyl chloride, antioxidant 264, and nano-titanium dioxide, extruding and granulating to obtain a wood-plastic material;

[0018] (3) Add the wood-plastic material obtained in step (2) into a single-screw extruder, extrude through a die at high temperature, and then cool and saw to obtain a finished wood-plastic product.

[0019] The main components of plant fiber are cellulose and lignin, the surface polarity is strong, and it is difficult to fuse with polymers. The inventors have found through research that under low temperature conditions, plant fibers and polymers shrink differently, an...

Embodiment 1

[0034] A preparation method of low temperature resistant composite plastic wood, comprising the following steps:

[0035] (1) In terms of parts by mass, spray 50 parts of cellulose C1 enzyme solution on the surface of 100 parts of wood flour and stir evenly, then stand at 30°C for 12h, then spray 30 parts of esterification modifier and mix at 80°C for 1.5h Carry out further modification to obtain modified wood flour; wherein, the cellulose C1 enzyme solution is an 8% cellulose C1 enzyme aqueous solution; the esterification modifier is succinic anhydride, phthalic anhydride, p-dimethyl A mixture of aminopyridine and dimethyl sulfoxide, wherein the mass ratio of succinic anhydride, phthalic anhydride, p-dimethylaminopyridine and dimethyl sulfoxide is 3:1:0.3:6;

[0036] (2) Mix the modified wood powder with 6 parts of KH550 coupling agent, 30 parts of polyvinyl chloride, 3 parts of antioxidant 264, and 10 parts of nano-titanium dioxide in an open mill at 130°C for 30 minutes, and ...

Embodiment 2

[0040] A preparation method of low temperature resistant composite plastic wood, comprising the following steps:

[0041] (1) In terms of parts by mass, spray 60 parts of cellulose C1 enzyme solution on the surface of 100 parts of wood flour and stir evenly, then stand at 40°C for 18h, then spray 40 parts of esterification modifier and mix at 90°C for 2h Further modification to obtain modified wood powder; wherein, the cellulose C1 enzyme solution is a 10% cellulose C1 enzyme aqueous solution by mass fraction; the esterification modifier is succinic anhydride, phthalic anhydride, p-dimethylamino A mixture of pyridine and dimethyl sulfoxide, wherein the mass ratio of succinic anhydride, phthalic anhydride, p-dimethylaminopyridine and dimethyl sulfoxide is 3:2:0.6:9;

[0042] (2) Mix the modified wood powder with 8 parts of KH550 coupling agent, 50 parts of polyvinyl chloride, 5 parts of antioxidant 264, and 15 parts of nano-titanium dioxide in an open mill at 150°C for 40 minut...

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Abstract

The invention discloses low-temperature-resistant composite plastic wood and a preparation method thereof. The preparation method comprises: (1) mixing plant fiber with a cellulase C1 solution, and spraying an esterification modifier to further modify the fiber, thus obtaining modified plant fibers; (2) mixing the modified plant fibers, a coupling agent, polyvinyl chloride, antioxidant 264 and nano TiO2 and performing extrusive granulation to prepare a plastic wood material; (3) extruding the plastic wood material with a single screw extruder through a bush die at high temperature, and coolingand sawing the material to prepare a plastic wood product. The components in the composite plastic wood have excellent combination capability, so that the low-temperature resistance of the material is greatly enhanced; besides, the preparation method is simple in process and employs fewer types of additives, is carried out with accessible raw materials, and is simple in steps and convenient in operations.

Description

technical field [0001] The invention relates to plastic-wood materials, in particular to a low-temperature-resistant composite plastic-wood and a preparation method thereof. Background technique [0002] Wood-plastic material is a new type of material that is being gradually promoted and applied in many countries in the world today. The raw materials of wood-plastic composite materials can be various resins such as waste plastics, etc., as well as waste wood and crop residues. Therefore, the development and wide application of wood-plastic composite materials The application helps to slow down the pollution of plastic waste, and also helps to reduce the environmental pollution caused by the incineration of agricultural waste. Moreover, the production and use of wood-plastic composite materials will not emit volatiles that endanger human health to the surrounding environment, and the material itself can be recycled. It is a new green environmental protection product and an ec...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L27/06C08K3/22
CPCC08L97/02C08K2003/2241C08K2201/011C08L2205/16C08L27/06C08K3/22
Inventor 张三喜张观兵
Owner 安徽爱瑞德新材料有限公司
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