The Mechanism Of Plastic Single Screw Extruder Process Feed Mixed With The Heat Transfer

Wood-plastic composite materials with better properties than pure wood or pure plastic.Wood powder and waste plastic composite, can not only solve the problem of plastic waste pollution of the urban environment, and can make full use of wood scrap, and its products have a very broad application prospects in many fields. An important role because of its environmental protection, the Ministry of Science and Technology study as a major national technology and equipment research and development and major industrial technology development projects ". Understanding of the blending of wood flour and plastic materials, processed into profiles and related equipment to explore the use of wood flour and plastic waste can be implemented is an important economic value and social significance.WPC machining apparatus main draw the plastics processing equipment, there are many different from the properties of the plastic to wood-plastic composite material was found in the application process, especially in a mixture of flour and plastic, the heat transfer process is determined in the processing quality and energy consumptionthe main factors, the law has its unique. WPC equipment mixed feeding process and its heat transfer efficiency will solve processing quality, production efficiency and energy consumption, but also the key technology to solve the processing problem. Over the last decade, a large number of scholars, many studies, people with more knowledge of the characteristics of wood-plastic material, but more a lack of research on the processing equipment. As processing, how to achieve a uniform mixing of flour and plastic WPC powder in the barrel, how to efficiently absorb energy to quickly achieve the processing of the melting temperature have not yet been studied. This article on this issue has been systematically studied, the main contents and conclusions are as follows:Wood-plastic feed structure analysis and research, by the method of wood-plastic mixing principle and plastic mixing experiments to prove the importance of dry wood-plastic hybrid proved favor dry wood flour wood flour mixed before extrusion.Applications homemade wood-plastic mixing system, wood plastic mixing experiments, proved an important factor affecting the mixing effect:humidity, mixing time, material geometry similar experiment.Metal plate and the thermal conductivity of the material of the theoretical analysis and experimental research, to understand the correspondence between the thermal conductivity and thickness of the metal plate, and make full use of the experimental data for the thermal energy.Experimental research, understanding of wood flour, plastic and wood flour-plastic mixture heat transfer law in different wall temperature conditions for the rational design of wood-plastic processing screw to provide experimental data on the material thickness and thermal conductivity of time.Theoretical simulation and experimental results based on the design of a new energy-saving type extruder barrel, new barrel has energy-saving, installed to facilitate the demolition of the advantages.