the dryer out on alternate straw fibers through a plastic straw into the grinder crushed powder, and then through a 80 mesh sieve straw powder, such composite materials economy, processability and physical properties can be very good, during mixing wheat straw is not prone to agglomeration.outdoor composite wood rocking chair lumbar support Pretreated wheat straw powder b The wheat straw for 30min, 10% H2SO4 solution, mainly to remove impurities such as pectin affect performance after washing to neutral, with 10% NaOH solution treatment 1h, was treated with low concentrations of dissolved wooden part pectin, lignin and hemicellulose and other low molecular weight impurities,

without changing the chemical structure of cellulose body, leaving the microfibers rotation angle is reduced, improving the molecular orientation, thereby increasing the fracture strength microfibers, etc., and then distilled water. 5.3 pairs of screw granulation process parameters on the impact extrusion temperature 5.3.1 WPC in the extrusion process is mainly affected by temperature and cylinder head temperature,building a bench seat wood floor cylinder temperature have a decisive impact on the main mixing and plasticizing effect of composite materials, the temperature of the extrusion head there Significant influence.

Barrel rise in temperature will decrease the apparent viscosity of the melt composite system, help to improve the flow rate of the melt, but the temperature is too high charred wood flour, can also lead to the viscosity is too low, WPC Study 37 pressure molding process and influencing factors,pvc fence products manufacturer while not conducive to cooling setting, easy to make the product surface weld marks, the article surface roughness, intensity difference, affect the quality of the extruded product. Therefore, in the material fully plasticized meet the premise should be to minimize cylinder temperature.