CAJ | 학술논문

研究了木塑复合材料在氙灯加速老化环境老化后的性能变化.结果表明,材料老化后表面发生褪色现象,弯曲强度和弯曲弹性模量分别损失10%和20%.通过扫描电子显微镜可以看出材料老化后表面出现微孔和细小裂缝,表面细长物质增多.接触角测试则证明了老化50 h后增多的细长物质为木粉,老化75 h和100 h后增多的细长物质为HDPE老化断链后的低分子物.通过X射线光电子能谱对材料表面元素状态及含量的变化分析可知,老化后材料表面发生了氧化.
연구료목소복합재료재선등가속노화배경노화후적성능변화.결과표명,재료노화후표면발생퇴색현상,만곡강도화만곡탄성모량분별손실10%화20%.통과소묘전자현미경가이간출재료노화후표면출현미공화세소렬봉,표면세장물질증다.접촉각측시칙증명료노화50 h후증다적세장물질위목분,노화75 h화100 h후증다적세장물질위HDPE노화단련후적저분자물.통과X사선광전자능보대재료표면원소상태급함량적변화분석가지,노화후재료표면발생료양화.
Properties changes of wood plastic composite after aging in the xenon-lamp accelerated aging environment were studied. The results showed that the surface of composite exhibited great depigmentation and the flexural strength and flexural modulus lost 10 percent and 20 percent separately after aging. Small hole and cracks were found on the surface of composite after aging by SEM and the slender substance on the surface increased. Contact angle measurement proved that the increasing slender substance was wood powder after aging 50 h and it was the low molecule substance of chain-breaking of HDPE after aging 75 h and 100 h. The occurrence of surface oxidation of composite after aging was realized by analyzing the change of content and state of composite surface element with X-ray photoelectron spectroscopy.