When wood powder filling volume in 100 PHR, the dosage of the CPE notched impact strength of the composites.

 

Can be seen from the diagram, the impact strength increased with the increase of dosage of CPE. Illustrate the CPE must have enough quantity to form a mesh structure, to accept and transmit impact energy, impact modified effect thereby.          

 

Coupling agent processing wood powder's influence on the composite materials

 

We use phthalate in shortening of wood powder surface treatment, in order to improve the compatibility of wood powder and resin. However, the experimental results show that the bending and impact strength did not significantly improve performance, the coupling effect is not big. Therefore need to seek other compatilizer, at the same time, the system should also be toughening modification., high filling amount of wood flour/PVC system, as the wood powder, with the increase of adding amount of its mechanical performance tends to decrease; Wood powder/PVC system with wood powder of length to diameter is larger, the impact properties increased;

 

Phthalate coupling agent on the processing of wood powder, the effect is not obvious, the reasonable choice compatilizer to improve the compatibility of wood powder and resin play a role.