文献类型：期刊文献

英文题名：Preparation of small particle diameter thermally expandable microspheres under atmospheric pressure for potential utilization in wood

作者：Yi, Qirui[1] Li, Jingyu[1] Zhang, Runhua[1] Ma, Erni[1] Liu, Ru[2]

第一作者：Yi, Qirui

通信作者：Ma, EN[1]

机构：[1]Beijing Forestry Univ, MOE Key Lab Wooden Mat Sci & Applicat, Qinghua Eastrd 35, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China

年份：2021

卷号：138

期号：4

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20203209023137);Scopus(收录号：2-s2.0-85089080483);WOS:【SCI-EXPANDED(收录号:WOS:000556735900001)】；

基金：Fundamental Research Funds for the Central Universities of China, Grant/Award Number: 2015ZCQ-CL-01

语种：英文

外文关键词：copolymers; differential scanning calorimetry (DSC); thermal properties

摘要：Small particle diameter thermally expandable microspheres (TEMs) were obtained for potential utilization in wood, with special attention on their particle diameters and expansion properties. The revolving speed of homogenization (RS) of 800 similar to 3000 r min(-1)was applied in suspension polymerization under atmospheric pressure to prepare TEMs, withn-hexane as core material and the copolymer of acrylonitrile, methyl acrylate, and vinyl acetate as shell. (a) The effect of the RS on the particle diameters of TEMs presented a negative correlation at low RS and remained stable at high RS, (b) When the RS was 1900 similar to 2100 r min(-1), the optimized TEMs with average particle diameters of 3.82 similar to 4.06 mu m were prepared, possessing expansion ratios of 3.4 similar to 4.3 and an expansion temperature of 112 degrees C, (c)The optimized TEMs had core-shell structure and high encapsulated content of alkane, and (d) The TEMs with small particle diameters could be impregnated into wood and expand successfully in wood cell lumens.