氟弹性体加工助剂对LLDPE薄膜性能的影响  

Effect of fluorinated elastomer plastic processing additive(PPA) on properties of LLDPE films

作　　者：曹建秋[1] 

机构地区：[1]中国石油化工股份有限公司天津分公司研究院,天津市300271

出　　处：《合成树脂及塑料》2013年第2期10-12,共3页China Synthetic Resin and Plastics

摘　　要：在线型低密度聚乙烯(LLDPE)树脂中添加一定量的氟弹性体加工助剂(PPA)进行造粒、吹膜,考察薄膜的力学性能和光学性能等。结果发现:添加少量PPA后,薄膜的光学性能得到改善,雾度由不添加PPA时的14.0%降低至11.3%,加工能耗也有所降低,但是力学性能受到影响,薄膜的拉伸屈服强度(纵向/横向)由13.4/11.6 MPa降至12.5/10.7 MPa,拉伸断裂强度(纵向/横向)由45.1/40.0 MPa降至40.0/37.6 MPa,落镖冲击破损质量由75.0 g降至59.5 g。A certain amount of polymer processing additive （PPA）, fluorinated elastomer, was added into linear low density polyethylene （LLDPE） resin, and then the LLDPE film was produced by pelleting and filmblown process. The mechanical properties and optical properties of the film were investigated. The results show that adding a small amount of PPA improves the film＇ s optical properties and decreases the energy consumption while influences its mechanical properties. The haze of the film decreases to 11.3% from 14.0% without PPA. The film has tensile strength at yield （vertical or horizontal） reduced from 13.4/11.6 MPa to 12.5/10.7 MPa, tensile strength at break （vertical or horizontal ） reduced from 45.1/40.0 MPa to 40.0/37.6 MPa, and falling dart impact failure mass reduced from 75.0 g to 59.5 g.

关 键 词：线型低密度聚乙烯 氟弹性体 薄膜 力学性能 光学性能 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]