Influence of temperature on the wood

  • The impact of processing temperature on the performance of composite privacy fence panels, wood-plastic composite materials in the extrusion process is mainly affected by temperature and cylinder head temperature. The main barrel temperature has a decisive influence on the effect of mixing outdoor composite decking composites. Head temperature has an important effect on the extrusion molding. With the barrel temperature, the apparent viscosity of the composite system decreases. Material for extrusion processing, increased temperatures help to increase mobility, Group 1 Experimental set the extrusion machine of a higher temperature, but temperatures cause burnt wood fibers, resulting in viscosity is too low and can not produce enough temperature of head pressure, high extruder so that the material viscosity decreased, is not conducive to cooling stereotypes, easy to make the wood plastic panel surface weld lines, so that products rough surface, the intensity difference, affecting the quality of extrusion and extrusion material in the cross-section uneven thermal history, due to the elastic restoring action of the melt after exit die wavy, affect the appearance of the quality of the products.

    Therefore, to meet on the basis of the quality of plastics materials, should try to reduce the temperature of the extruder.