摘要
通过插层法和溶胶-凝胶法制备了PVA/MMT/TiO2复合薄膜,并对薄膜的分子结构、断面形貌和热性能进行了表征,同时研究了体系的力学性能和透光性。结果表明,MMT、TiO2均匀分散于基体中,由于无机粒子的协同增强作用,PVA/MMT/TiO2复合薄膜的热分解温度Td比纯PVA薄膜提高了59℃,拉伸强度、直角撕裂强度和弹性模量分别比纯PVA薄膜提高了49.46%、40%和80%,断裂伸长率则由329.33%降低至181.15%。复合薄膜对可见光保持了较高的透过率,对紫外光有较大程度的吸收。
PVA/MMT/TiO2 composite film was prepared via solution intercalation and sol-gel process. The molecule structure, fracture morphology and thermal properties of the films were characterized by means of FTIR, SEM and TG, and the mechanical properties and optical transmittance of the films were studied at the same time. The results showed MMT and TiO2 particles well dispersed in the polyimide matrix. As the synergistic effect of the two particles, the decomposition temperature, tensile strength, right angle tearing strength and elastic modulus of the composite film increased respectively by 59℃, 49. 46% , 40% and 80% than those of pure PVA films, while the elongation at break decreased from 329.33% to 181.15%. The composite film had high visible light transmittance and high absorbing capability for ultraviolet radiation.
出处
《塑料工业》
CAS
CSCD
北大核心
2007年第3期29-32,共4页
China Plastics Industry
关键词
PVA
插层法
溶胶-凝胶法
力学性能
透过率
PVA
Intercalation Method
Sol-gel Method
Mechanical Properties
Optical Transmittance
