Wood plastic composite material modification method

- Jan 02, 2019-

Wood-plastic composite (WPC) is a new type of material that has a good application prospect in building products due to its excellent comprehensive performance. This paper mainly introduces the method of interfacial modification of wood-plastic composites by physical, chemical and comprehensive methods.

Keywords: wood-plastic composite; interface modification; physical method; chemical method; adding modifier

Wood Plastics Composites (WPC) is a new type of material with new structure and excellent comprehensive properties formed by wood powder or wood fiber and thermoplastic polymer compounded by melt processing. In recent years, the research and development of wood-plastic composite materials has received great attention from the world's scientific and technological circles, especially in North America. The reason is that most countries in the world are due to post-war five or six. In the past decade, deforestation has resulted in a lack of forest resources and a decrease in the supply of wood. The white pollution caused by a large amount of waste plastics has become more and more serious. How to reuse low-quality waste wood and plastics has become an environment at home and abroad. One of the topics to protect smoking. Wood-plastic composites are an effective way to solve the problem of recycling low-quality waste wood and plastics. Because of its long life, high hardness, easy coloring, easy molding, anti-insect, abrasion resistance, aging resistance, low water absorption, and similar wood appearance, this environmentally friendly material is widely used in furniture, construction, and Industry, vehicle and ship, packaging and transportation, etc.

At present, there are many methods for interfacial modification of wood-plastic composites. Improving the interfacial compatibility between plant fibers and polymer aggregates is the key to interfacial modification of wood-plastic materials. In this paper, the methods of interface modification of wood-plastic composites are discussed from three aspects: physical methods, chemical methods and additive modifiers.

In recent years, there have been more and more researches on wood-plastic composite materials at home and abroad, among which the interface modification of wood-plastic composites is the focus of research. As a new environmentally friendly material strongly supported by the National Twelfth Five-Year Plan, the development of wood-plastic composite materials is of great significance to China's circular economy, environmental protection, and rational use of resources. As the key to improve the mechanical properties of wood-plastic composites, the research and modification methods of interfacial modification of wood-plastic composites are bound to be more abundant, energy-saving and environmentally friendly, and the application of wood-plastic materials will be more extensive.