文献类型：会议论文

英文题名：Effect of Modifying Agent (ACR) on Cell Structure and Mechanical Properties of Extrusion-Foamed PVC Sheet

作者：Wang, Mingyi[1];Zhou, Nanqiao[2];Hu, Jun[2]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]S China Univ Technol, Natl Engn Res Ctr Novel Equipment Polymer Proc, Key Lab Polymer Proc Engn, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China

会议论文集：International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE)

会议日期：NOV 28-29, 2015

会议地点：Guangzhou, PEOPLES R CHINA

语种：英文

外文关键词：PVC; foam; extrusion; supercritical carbon dioxide

摘要：Rigid polyvinyl chloride (R-PVC) foam sheets were prepared in a continuous extrusion foaming system by using supercritical CO2 as the foaming agent. The effects of acrylic resin (ACR) on the rheological properties of PVC were investigated using a Brabender torque rheometer while other basic formula remained unchanged. The influences of ACR content on microstructure, and mechanical properties of PVC foamed sheet were investigated. The rheological test results showed that with the addition of ACR, the gelation time of the formula was gradually shortened while the equilibrium torque increased. With the increase of ACR content in the formula, the tensile strength, elongation at break, flexural strength and notched impact strength of PVC increased initially and then decreased, implying that there exists an optimum ACR content for improving the mechanical properties of foamed PVC sheet.