CAJ | 학술논문

选用高密度聚乙烯(HDPE)和木粉为主要原料,马来酸酐接枝聚乙烯作界面增容剂,采用模压工艺制造木塑复合材料,同时加入不同抗氧剂,对不同木塑复合材料分别进行热氧老化实验,取不同老化时间段的样品置于自来水中常温浸泡,研究热氧老化对木塑复合材料吸水性能的影响.结果表明:热氧老化后的木塑复合材料吸水性能仍然遵循材料吸水过程的一般规律,即初始阶段吸水较快,之后将达到吸水平衡;但随着老化时间的延长,木塑复合材料吸水现象更加严重.不同的抗氧化剂对木塑复合材料的吸水性能存在不同的影响.
선용고밀도취을희(HDPE)화목분위주요원료,마래산항접지취을희작계면증용제,채용모압공예제조목소복합재료,동시가입불동항양제,대불동목소복합재료분별진행열양노화실험,취불동노화시간단적양품치우자래수중상온침포,연구열양노화대목소복합재료흡수성능적영향.결과표명:열양노화후적목소복합재료흡수성능잉연준순재료흡수과정적일반규률,즉초시계단흡수교쾌,지후장체도흡수평형;단수착노화시간적연장,목소복합재료흡수현상경가엄중.불동적항양화제대목소복합재료적흡수성능존재불동적영향.
High density polyethylene(HDPE) and wood-flour were used as raw materials, and maleic anhydride grafted polyethylene(MAPE) as compatibilizing agent, wood-plastic composites were produced by compression molding process,and different antioxidants were added into the composites during the production. The thermo-oxidative aging test was conducted on different composites, then the composites with different ageing time were immersed in water at room temperature, the effects of thermo-oxidative aging on the water absorption of different composites were studied. The results showed that the water uptake behaviors of the aged composites still abided by the general rule for that by other materials, i.e, the composites will absorb water quickly at the first stage, and then reach equilibrium; and more water will be taken by the composites with the prolong of aging time. Effects of different antioxidants on the water uptake behaviors of the composites differ from one another.