PE基木塑复合材料的光稳定化及其耐候性能研究

Studies on Photostabilization and Weathering Properties of Polyethylene Based Wood-plastic Composites

以高密度聚乙烯为树脂基体,同时并采用两种自主开发的木塑专用耐候母粒对其进行光稳定化改性,制备了PE基木塑复合材料,并对其耐候性能进行了研究。结果表明,耐候母粒LS-1和LS-2均对PE基木塑复合材料有较好的抗老化作用。经1000h的氙灯加速老化后,光稳定化改性前后的木塑复合材料的拉伸性能变化不大;改性后的木塑复合材料的冲击强度保持率明显提高,色差明显减小,其中LS-2的效果更佳。

With high-density polyethylene as matrix resin and photostabilized with two weathering masterbatches, polyethylene based wood-plastic composites were prepared and their weathering properties were studied. It has been concluded from xenon lamp aging （1000h） test that both LS- 1 and LS-2 weathering masterbatches play an important role in anti-aging of polyethylene based wood-plastic composites, whose tensile properties, retention of impact properties and color difference can be distinctly maintained, improved and decreased, respectively, and the LS -2 plays a better effect.