《化学和黏合》
 
报目录
报介绍
 
 
 
 
  目前位置: 《化学和黏合》>>报目录

2018年 先后5希望

微晶纤维素/不饱聚酯复合材料的力学与热稳定性研究*
王嘉婧1,2,于光华1,2,刘雅欣1,2,沈 研究1,2,肖 楠1,张琪涵1,张秀成1,2**
(1.东北林业大学 理学院,黑龙江 哈尔滨 150040 2.黑龙江省阻燃材料分子设计和制备重点实验室,黑龙江 哈尔滨 150040)
选择 如果:因为不饱聚酯(UP)啊基体,硅烷偶联剂(KH-550)改变性微晶纤维素(MCC)啊填充材料,使用共混浇注方法制备微晶纤维素/不饱聚酯树脂(MCC/UPR)复合材料。使用SEM、DMA、TG研究了MCC和硅烷偶联剂对MCC/UPR复合材料的力学性能和热降解行为的影响。结果表明:增长MCC能够加强UPR 的力学性能,当添加量超过45wt%经常力学性能明显下降。KH-550硅烷偶联剂能够改善MCC和UPR的界面相容性,增强树脂的黏结性,增强复合材料的性质。在实验条件下MCC啊30wt%经常,拉伸强度、撞强度、弯曲强度较纯UPR资料提高了81.86%,82.26%和53.76%;同条件下,偶联剂改性后的MCC/UPR复合材料力学性能比未经处理的分别增长了19.70%,11.50%和6.83%。MCC如果UPR玻璃化转变温度提高,刚性降低。
关键词:复合材料;不饱聚酯;微晶纤维素;硅烷偶联剂;力学性能
  受到图分类号:TQ630.4 文献标识码:A 文章编号:1001-0017(2018)05-0326-05

Study on the Mechanical and Thermal Stability of Microcrystalline Cellulose/Unsaturated Polyester Composites

WANG Jia-jing1.2, YU Guang-hua 1.2, LIU Ya-xin1.2, SHEN Yan1.2, XIAO Nan1, ZHANG Qi-han1 and ZHANG Xiu-cheng1.2

(1. College of science, Northeast Forestry University, Harbin 150040, China; 2. Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retardant Materials, Harbin 150040, China)

Abstract: The unsaturated polyester (UP) was used as the matrix and the microcrystalline cellulose (MCC) modified by silane coupling agent(KH-550) was used as the filler, and then the microcrystalline cellulose/unsaturated polyester resin(MCC/UPR) composites was prepared by blending-pouring methods. The effects of MCC contents and silane coupling agents on the mechanical properties and thermal degradation behaviors of MCC/UPR composites were investigated by the means of SEM, DMA and TG. The results showed that the MCC could improve the mechanical properties of UPR composites. However, when the content of MCC exceeded 45%(wt), the mechanical properties decreased obviously. The KH-550 could improve the interfacial compatibility between MCC and UPR, the adhesion of the resin and the mechanical properties of the composite materials. Under the experimental conditions, when the content of MCC was 30%(wt), the tensile strength, impact strength and bending strength increased by 81.86%,82.26% and 53.76% respectively compared with the pure UPR materials; under the same conditions, the coupling agent modified MCC/UPR composites (K-MCC/UPR) were improved by 19.70%, 11.50% and 6.83% respectively compared with the unmodified ones. The MCC made the glass transition temperature of UPR increase and the rigidity decrease.

Key words: Composites; unsaturated polyester; microcrystalline cellulose; silane coupling agents; mechanical property

  如果要全文请与编辑部联系。联系方法:0451-82608722