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当前位置: 首页 > 文章 > 竹粉内部塑化/LDPE复合材料热融合稳定性的研究 世界竹藤通讯 2013,11 (2) 7-11
Position: Home > Articles > A Study of Thermal Fusion Stability Performance of Internally Plasticized Bamboo Powder and LDPE Composites World Bamboo and Rattan 2013,11 (2) 7-11

竹粉内部塑化/LDPE复合材料热融合稳定性的研究

作  者：
孙恩惠;孙丰文;张彰
单  位：
江苏省农业科学院农业资源与环境研究所;南京林业大学竹材工业学院
关键词：
氯化苄;苄基化竹粉;竹塑复合材料;界面相容;热融合稳定性
摘  要：
采用氢氧化钠作润胀剂和催化剂,氯化苄为醚化剂对竹粉进行内部塑化改性.在不同反应条件下,得到了不同接枝率的塑化竹粉,并比较了相同温度、湿度及不同温度条件下竹粉的质量吸湿率与极限吸湿率.结果表明,塑化竹粉吸湿率显著低于未处理竹粉,表现出很好的憎水性.当竹粉质量增重率为64.2%时,其吸湿质量增重率仅为4.84%,温度对竹粉质量吸湿率无显著性影响;将其分别与聚乙烯混合热压得到复合材料,SEL结果表明塑化竹粉与聚乙烯可形成良好的界面融合;塑化竹粉/聚乙烯复合材料的拉伸强度和弯曲强度比未处理的复合材料高.当塑化竹粉添加量为30%时,拉伸强度提高23.83%,弯曲强度提高25.91%.塑化竹粉/聚乙烯复合材料具有很好的热融合稳定性.
译  名：
A Study of Thermal Fusion Stability Performance of Internally Plasticized Bamboo Powder and LDPE Composites
摘  要：
Sodium hydroxide as a swelling agent and a catalyst and benzyl chloride as the etherifying agent were used to modify bamboo powder through internal plasticization. We get bamboo powder with different rates of graft plasticizing under different reaction conditions, and then compared the specific absorption of quality and limit moisture absorption of bamboo powder in the same temperature and humidity condition and different temperature conditions as well. The results found that moisture the absorption of plasticized bamboo powder was significantly lower than the untreated bamboo powder, and showed a good hydrophobic performance. The specific absorption of quality only reached 4.84%, when the weight of bamboo power gain was 64.2%.The temperature had no significant impact on the specific absorption of quality of bamboo powder. Composites were obtained by blending bamboo powder with the polyethylene in the hot pressing conditions, and the SEL results showed that the plasticized bamboo powder and polyethylene could form a good interface fusion. Tensile and flexural strength of plasticized bamboo powder/polyethylene composites was higher than the untreated. Its tensile strength increased by 23.83% and its flexural strength grew by 25.91% when the plasticized bamboo powder had the ratio of 30%in the composites. Bamboo powder/polyethylene composites have the good thermal fusion stability.

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