The development trend of wood-plastic composite materials
2024-04-18 13:07:31
Wood-plastic composite materials are high-performance, high value-added green environmentally friendly composite materials that are made of wood as the main raw material and processed through various processes through various processes. In recent years, as the wood material component of wood-plastic composite materials is being developed to various other plant fiber materials, in a broader sense, wood-plastic composite materials have become essentially based on various plant fiber materials. , a new class of composite materials formed with a variety of different plastics. Its appearance is conducive to alleviating the shortage of wood resources and the difficulty of recycling and utilization of waste, and increasing the added value of products. It can be widely used in the automotive industry, construction industry, interior decoration, home appliances and transportation industries. Wood-plastic composite materials are gradually developed with the improvement of scientific research level, and their development trends are mainly reflected in the following aspects:
1. Development of plastic raw materials
With the further development of technology, the handling of today's very difficult solid waste will be gradually solved. Because the prevention is more important than governance, the new environmentally friendly plastics will be widely used in various fields. Some famous scientific research institutions and enterprises have successively launched a variety of biodegradable polymers, and among many biodegradable polymers, polylactic acid has sprung up. With its excellent mechanical properties, wide application areas, significant environmental benefits and social benefits, it is of concern to the global plastics industry.
In addition, in view of the fact that the cost of raw materials for recycling will increase, and in order to achieve certain performance, wood-plastic composite manufacturers will give priority to new plastics with better stability and will not cause more defects during blending. In the future, it is more likely to adopt new plastics directly.
2. The rise of additives
The interaction between wood and plastic components has an important impact on the properties of the composite. The use of coupling agents to improve the bonding between wood and plastic is a long-term research topic. Due to the increasing complexity of the formulation, the interaction between the coupling agent and other auxiliaries should also be considered. In order to achieve the required processability, durability and other requirements, a complete supply of auxiliaries capable of fulfilling various functions is being obtained. progress.
3. Application of foaming technology
The foaming technology of wood-plastic composite material reduces the weight of the product, reduces the cost, and improves the performance of the mounting connector. However, material foaming reduces the strength and hardness of the material and results in reduced surface finish, so the combination of foamed and unfoamed materials maintains a functional balance.
4. Functional development of wood-plastic composite materials
The compounding of wood-plastic raw materials is no longer a single mixed form, and different combinations of raw materials can achieve new functions. For example, wood-plastic composite materials, plastics can improve durability; plastics, wood-plastic composite materials can improve coating performance. As wood-plastic composites are increasingly used outdoors, more research has focused on durability and service life.
5, the expansion of fiber raw materials
In recent years, research on the use of various natural fibers for wood-plastic composite materials has shown an increasing trend. The commonly used plant fiber raw materials are various kinds of hemp, and there are agricultural straw wheat straw, sugar residue and the like. Another important source of raw materials is various urban plant fiber wastes, such as waste wood, waste paper, waste textiles, etc. They are made into various plates and profiles by different composite means with waste plastics in the city, and used in different fields. It is very beneficial to reduce urban environmental pollution and improve the living conditions of urban population.
This article is based on the article "Research, Development and Prospect of Wood-plastic Composite Materials" by Gao Li.
1. Development of plastic raw materials
With the further development of technology, the handling of today's very difficult solid waste will be gradually solved. Because the prevention is more important than governance, the new environmentally friendly plastics will be widely used in various fields. Some famous scientific research institutions and enterprises have successively launched a variety of biodegradable polymers, and among many biodegradable polymers, polylactic acid has sprung up. With its excellent mechanical properties, wide application areas, significant environmental benefits and social benefits, it is of concern to the global plastics industry.
In addition, in view of the fact that the cost of raw materials for recycling will increase, and in order to achieve certain performance, wood-plastic composite manufacturers will give priority to new plastics with better stability and will not cause more defects during blending. In the future, it is more likely to adopt new plastics directly.
2. The rise of additives
The interaction between wood and plastic components has an important impact on the properties of the composite. The use of coupling agents to improve the bonding between wood and plastic is a long-term research topic. Due to the increasing complexity of the formulation, the interaction between the coupling agent and other auxiliaries should also be considered. In order to achieve the required processability, durability and other requirements, a complete supply of auxiliaries capable of fulfilling various functions is being obtained. progress.
3. Application of foaming technology
The foaming technology of wood-plastic composite material reduces the weight of the product, reduces the cost, and improves the performance of the mounting connector. However, material foaming reduces the strength and hardness of the material and results in reduced surface finish, so the combination of foamed and unfoamed materials maintains a functional balance.
4. Functional development of wood-plastic composite materials
The compounding of wood-plastic raw materials is no longer a single mixed form, and different combinations of raw materials can achieve new functions. For example, wood-plastic composite materials, plastics can improve durability; plastics, wood-plastic composite materials can improve coating performance. As wood-plastic composites are increasingly used outdoors, more research has focused on durability and service life.
5, the expansion of fiber raw materials
In recent years, research on the use of various natural fibers for wood-plastic composite materials has shown an increasing trend. The commonly used plant fiber raw materials are various kinds of hemp, and there are agricultural straw wheat straw, sugar residue and the like. Another important source of raw materials is various urban plant fiber wastes, such as waste wood, waste paper, waste textiles, etc. They are made into various plates and profiles by different composite means with waste plastics in the city, and used in different fields. It is very beneficial to reduce urban environmental pollution and improve the living conditions of urban population.
This article is based on the article "Research, Development and Prospect of Wood-plastic Composite Materials" by Gao Li.
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