文献类型：期刊文献

英文题名：Methodology for describing characteristic foam parameters during chemical foaming of Low-density Polyethylene

作者：Wu, Shan He, Li Zhang, Chun Gong, Wei Jiang, Tuanhui Zhang, Xiang

第一作者：He, Li;Wu, Shan

通信作者：He, L[1];He, L[2];Zhang, C[3]|[14440f6a6d277849ce3bf]张纯;

机构：[1]Guizhou Univ, Coll Mat Sci & Met Engn, Guiyang 550025, Guizhou, Peoples R China;[2]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China;[3]Guizhou Inst Technol, Coll Mat & Met, Guiyang 550003, Guizhou, Peoples R China

第一机构：Guizhou Univ, Coll Mat Sci & Met Engn, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat Sci & Met Engn, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Mat & Met, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院;

年份：2019

卷号：6

期号：2

外文期刊名：MATERIALS RESEARCH EXPRESS

收录：;EI(收录号：20191306683492);Scopus(收录号：2-s2.0-85057735129);WOS:【SCI-EXPANDED(收录号:WOS:000450224900003)】；

基金：This work were financially supported by Major Special Project of Guizhou Province, China [grant number 6023]; Excellent Young Talents Project of Guizhou Province, China [grant number 2015-29]; Hundred Talents Project of Guizhou Province, China [grant number 2016-5673]; The Science and Technology Foundation of Guizhou Province, China [grant numbers 2016-1077, 2016-4538]; The Science and Technology Program of Baiyun District of Guiyang City, China [grant number 2015-17]; National Natural Science Foundation of China [grant number 51602067]; Program on Science and Technology Project of Guizhou Province [grant number 2016-2806].

语种：英文

外文关键词：foaming processes; less-foamed; fine-foamed; over-foamed

摘要：The micro-cellular foaming of two Low-density Polyethylene (LDPE) composites as the temperature increased from 140 degrees C to 160 degrees C was investigated through visualization technology with the XTL-550E OM (optical Microscopy), with which, in situ observations during heating were carried out. The results demonstrated that the relationships of N-t and D-t followed the Boltzmann and Logistic functions with higher correction coefficients beyond 0.97 through non-linear fitting. Also, the three stages (Less-foamed, Fine-foamed and Over-foamed) were obtained by the first and second derivatives of the fitting curve: (1) the first stage was the less-foamed with the rate and driving force for the cell formation as well as the growth increase with temperature; (2) the second stage was the fine-foamed with competitive interaction between the formation rate and the growth rate; (3) the third stage was the over-foamed with the formation rate and driving force at an almost zero value. Moreover, the demarcation points of the three stages by the derivatives were almost consistent with the results through the fitting equation (t(0.5) and t(max)) and experimentation. By contrast, certain differences existed for the three stages in the two LDPE composites. These were attributed to the heterogeneous nucleation and strengthening towards the LDPE matrix of the nano-Montmorillonite (nano-OMMT).