临界粒子间距判据适用条件的研究:缺口半径的影响  

Study on Applicability of Critical Interparticle Distance Criterion:Effect of Notch Radius

作　　者：陈录婵 肖妍 付传玉 胡跃鑫[1] 韩向艳[1] CHEN Lu-chan;XIAO Yan;FU Chuan-yu;HU Yue-xin;HAN Xiang-yan(College of Chemistry,Chemical Engineering and Environmental Engineering,Liaoning Shihua University,Fushun 113001,China;North Huajin Chemical Industries Company limited,Panjin 124000,China)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001 [2]北方华锦化学工业股份有限公司,辽宁盘锦124000

出　　处：《塑料工业》2019年第2期92-95,共4页China Plastics Industry

基　　金：辽宁省教育厅科学研究一般项目(L2016001);辽宁石油化工大学国家级科研项目培育基金资助(2016PY-004);辽宁省科技厅博士启动基金(20170520284)

摘　　要：采用不同粒径碳酸钙(CaCO_3)粒子与高密度聚乙烯(HDPE)熔体共混,研究不同缺口半径(R)下共混体系发生脆韧转变时临界粒子间距(IDc)与CaCO_3粒径大小和含量之间的关系。结果表明,当缺口为45°V型,缺口半径R=0. 25 mm时,IDc与CaCO_3粒径大小和含量无关,表明该判据是适用的;当缺口为45°V型,缺口半径R=1. 0 mm时,发现IDc依赖于CaCO_3粒径大小,表明该判据不再适用。Melt blending of calcium carbonate(CaCO3)particles which had different particle sizes with high density polyethylene(HDPE),and the relationship between critical particle spacing(IDc)and CaCO3 particle size and content in the brittle-ductile transition of blends with different notch radius(R)was investigated.The results show that IDc is independent of the CaCO3 particles size and content when the notch is 45°V shaped notch and the radius R is 0.25 mm,which indicates that the criterion is not applicable.However, IDc depends on the CaCO3 particles size and content when the notch is 45°V shaped notch and the radius R is 1.0 mm,which indicates that the criterion is applicable.

关 键 词：脆韧转变 临界粒子间距判据 缺口半径 

分 类 号：TQ322[化学工程—合成树脂塑料工业]