Anti-aging impact-resistant modified wood-plastic composites (WPC) and preparation method thereof

A wood-plastic composite material and impact-resistant technology, which is applied in the field of composite materials, can solve the problems of white or light-colored products such as yellowing on the surface, weak interface bonding, and weak interface bonding force, so as to achieve good interface stress transmission and improve interface bonding force , Rigidity and toughness balanced effect
CN110283472AActive Publication Date: 2019-09-27ZHEJIANG LIFAN FURNITURE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG LIFAN FURNITURE
Publication Date
2019-09-27

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Abstract

The invention provides an anti-aging impact-resistant modified wood-plastic composites (WPC) and a preparation method thereof. The wood-plastic composites are prepared from the following raw materials in parts by weight: 20-50 parts of polyolefin, 30-70 parts of enzymatic hydrolysis lignin modified vegetable fibers, 1-3.5 parts of polymerized rosin, 0.1-10 parts of an inorganic filler, 0.1-4 parts of an antioxidant, and 0.1-3 parts of an ultraviolet screening agent, wherein the enzymatic hydrolysis lignin modified vegetable fibers are prepared from enzymatic hydrolysis lignin and vegetable fibers through an anhydride reaction. According to the modified wood-plastic composites prepared by the invention, the affinity between the vegetable fibers and plastic is high, the dimensional stability of the composites is high, the rigidity and toughness are balanced, and ageing resistance is also improved at the same time; in the process of preparing the enzymatic hydrolysis lignin, a certain amount of ligninase is added, thus improving the impact resistance of the wood-plastic composites prepared from the enzymatic hydrolysis lignin modified vegetable fibres. Through the method of using the lignin to modify the vegetable fibers provided by the invention, lignin resources are fully used, waste is turned into treasure, and comprehensive utilization of the lignin resources is realized.
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Description

technical field

[0001] The invention belongs to the field of composite materials, in particular to an anti-aging and impact-resistant modified wood-plastic composite material and a preparation method thereof. Background technique

[0002] Wood-plastic composites (Wood-Plastic Composites, WPC) is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of polyethylene, polypropylene and polyvinyl chloride, etc. Wood flour, rice husk, straw and other waste plant fibers are mixed into new wood materials, and then processed by extrusion, molding, injection molding and other plastic processing techniques to produce boards or profiles. Mainly used in building materials, furniture, logistics packaging and other industries. Wood-plastic composite materials have risen in full swing. Most of the existing technologies focus on plastic components, reinforcements, toughening fillers, and weather-resistant agents. Research on modifie...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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