Elucidation of the performance enhancement expression mechanism by additives for high wood loaded wood-plastic-composites

为提高高木含量木塑复合材料的力学强度和耐候性，采用木质化学成分制备塑性添加剂，提高木塑复合材料的力学强度。同时评价了塑料用紫外线稳定剂（UVA）和光稳定剂（LS）对木塑复合材料耐候性的改善作用，UVA主要是减少变色，LS主要是减少粉化。UVA和LS的联合作用对变色和粉化都有较好的抑制效果。

For improving mechanical strength and weatherability of wood-plastic composites (WPC) with high wood loaded, mechanical strength was improved by plasticity additives made from woody chemical components. And, improvement of weatherability of WPC by ultra violet ray stabilizers (UVAs) and light stabilizers (LS) for plastic use was evaluated, and UVA mainly decreased color changes and LS reduced chalking. Furthermore, good depression effects for both color change and chalking were achieved by combination of UVA and LS.