玉米秸秆纤维-氨基树脂模塑料的制备与性能研究  

Preparation and Properties of Mould Plastics from Corn Straw Fiber-Amino Resin

作　　者：韩春国[1] 王春鹏[1,2] 金铁铃[1] 储富祥[1,2] 

机构地区：[1]中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室国家林业局林产化学工程重点开放性实验室江苏省生物质能源与材料重点实验室,江苏南京210042 [2]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《生物质化学工程》2011年第2期20-24,共5页Biomass Chemical Engineering

基　　金：国家863计划资助(2007AA100704);浙江省与中国林科院省院合作项目(2009SY01);林业行业专项(201104004)

摘　　要：以玉米秸秆纤维为增强材料,氨基树脂为基体聚合物,制备了玉米秸秆纤维-氨基树脂模塑料。研究了玉米秸秆纤维浆料质量分数对模塑料的弯曲强度和冲击强度的影响。采用电子扫描显微镜(SEM)表征玉米秸秆纤维和氨基树脂的界面结合性能,并利用动态机械热分析(DMA)和热重分析(TG)分析模塑料的动态力学性能和热稳定性。研究表明,当玉米秸秆纤维浆料质量分数为31%时,氨基树脂模塑料的力学性能优异,弯曲强度为60.41 MPa,冲击强度为1.81 kJ/m2,模塑料的储能模量较高,性能较优;玉米秸秆纤维与氨基树脂的相容性稍差;模塑料在68.8～114.3℃时失重率仅为0.5%～2%,在246.0～345.2℃时失重率较高,达到26%,玉米秸秆纤维质量分数对模塑料的热稳定性影响不明显。Amino resin mould plastics were prepared from corn stalk fiber as reinforced materials and amino resin as polymeric matrix.The effects of corn straw fiber mass fraction on bending strength,impact strength of mould plastic were investigated.The internal-surface bonding performances of fibers and the amino resin were characterized by SEM,and the mechanical properties and thermal stability of that analyzed by DMA and TG.The results show that the mechanical properties of mould plastic are excellent,while the corn straw fiber mass fraction of 31 %,with a bending strength of 60.41 MPa,and the impact strength of mould plastics 1.81 kJ/m2.The energy-storage modulus and comprehensive mechanical properties are excellent.The compatibi-lity between corn stalk fibers and amino resin are poor.The weight loss rates of mould plastics increase from 0.5 % to 2 % when the temperatures do from 68.8℃ to 114.3 ℃ and it increases up to 26 % when the temperature of 246.0-345.2 ℃.The effects of corn straw fiber mass fraction on the thermal stability of mould plastics are insignificant.

关 键 词：玉米秸秆纤维 氨基树脂 模塑料 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]