双交联废弃瓦楞纸基气凝胶缓冲材料的制备与性能
Preparation and properties of double crosslinked waste corrugated paper-based aerogel buffer materials
任子铭 1黎亮丽 1蒋向向 1岳士琪 1李宏达 1苟进胜1
作者信息
- 1. 北京林业大学 木质材料科学与应用教育部重点实验室,北京 100083;北京林业大学 木材科学与工程北京市重点实验室,北京 100083
- 折叠
摘要
以废弃瓦楞纸(WCP)为原料,明胶(G)和植酸(PA)为改性剂,采用溶胶-凝胶法制备高吸能气凝胶.对明胶用量、植酸用量和反应温度对双交联改性废纸基气凝胶力学性能的影响进行了研究,并通过SEM、FTIR、XRD和TGA表征了明胶单一改性和明胶-植酸双交联改性前后气凝胶的结构与性能变化.结果表明:改性单体成功交联到废纸纤维上,双交联改性后的废纸基气凝胶呈现三维网状结构,相较于未改性和单一改性废纸基气凝胶具有较高的热稳定性、优异的隔热性能(0.045 W·m-1·K-1)和超强的吸能性(应变 70％时,单位体积吸收能为253.45 kJ/m3),吸能性分别为珍珠棉(EPE)和乙烯-醋酸乙烯酯共聚物(EVA)的11.26和2.7倍.作为包装运输过程中的一种绿色缓冲材料,具有广阔的应用前景.
Abstract
Waste corrugated paper(WCP)was used as raw material,gelatin(G)and phytic acid(PA)were used as modifiers,and high energy absorption aerogel was prepared by sol-gel method.The effects of G dosage,PA dosage,and reaction temperature on the mechanical properties of dual-crosslinked modified waste paper-based aerogels were investigated.The structural and performance changes of aerogels before and after single modification with G and dual modification with G and PA were characterized by SEM,FTIR,XRD and TGA.The results show that the modified monomer is successfully crosslinked onto the waste paper fiber,and the double crosslinked waste paper based aerogel presents a three-dimensional network structure.Compared with the unmodified and single modified waste paper based aerogel,it has higher thermal stability,excellent thermal insulation(0.045 W·m-1·K-1)and super energy absorption(Absorption energy per unit volume is 253.45 kJ/m3 at 70％strain).The energy absorption capacity is 11.26 and 2.7 times higher than that of expanded polyethylene(EPE)and ethylene vinyl acetate(EVA),respectively.As a green cushioning material in the packaging and transportation process,it has broad application prospects.
关键词
废弃瓦楞纸/复合气凝胶/增强改性/力学性能/缓冲包装材料Key words
waste corrugated paper/composite aerogel/enhanced modification/mechanical properties/cushioning packaging materials引用本文复制引用
出版年
2024
NETL
NSTL
万方数据