微纳米纤维素的制备及其改性不饱和聚酯树脂的研究  

PREPARATION OF MICRO & NANO SIZED CELLULOSE AND ITS MODIFICATION ON THE PROPERTIES OF UP RESIN

作　　者：余旺旺[1,2] 王翠娜[2] 雷文[2] 包玉衡 

机构地区：[1]南京工业职业技术学院,南京210023 [2]南京林业大学,南京210037

出　　处：《玻璃钢／复合材料》2016年第3期65-69,共5页Fiber Reinforced Plastics/Composites

基　　金：江苏省精密制造工程技术研究开发中心开放基金项目(ZK13-01-04)

摘　　要：为了改善不饱和聚酯树脂浇注体的性能,以苎麻纤维为原料,采用碱预处理加混酸水解法制备微纳米纤维素,采用共混工艺制备微纳米纤维素/不饱和聚酯树脂浇注体复合材料,并对其力学性能和热性能进行对比研究。结果表明,当不饱和聚酯树脂中加入3%微纳米纤维素后,其拉伸强度、拉伸模量和冲击强度分别提高了55.42%、9%和62.42%,材料断裂由脆性断裂转变成韧性断裂,起始热分解温度由363.10℃升高到369.41℃。说明利用微纳米纤维素改性不饱和聚酯树脂,不仅可以提高其力学性能和热稳定性,而且可以改变材料的断裂特性。Aiming at improving the properties of UP resin casting,ramie fiber was used as raw material,and micro nano sized cellulose reinforced UP resin composite was prepared by treating ramie fiber with Na OH solution first and then followed by hydrolysis with the action of mixed acid. The mechanical and thermal properties of micro nano cellulose reinforced UP resin composite and pure UP resin casting were comparatively investigated. The results show that,when 3wt% micro nano cellulose is added,the tesnsile strength,tensile modulus and impact strength of the casting is increased by 55. 42%,9% and 62. 42%,respectively. And,the breaking state of the casting turns from original brittle rupture into ductile one,the initial decomposition temperature of the casting increases from 363. 10℃ to 369. 41℃. These indicate that the micro nano cellulsoe can not only improve the mechanical and thermal properties,but also change the breaking properties from brittle rupture to ductile one.

关 键 词：微纳米纤维素 不饱和聚酯树脂 浇注体 力学性能 热稳定性 

分 类 号：TB332[一般工业技术—材料科学与工程]