成核剂对薄壁注塑聚丙烯K1870性能的影响  

Effect of Nucleating Agents on the Properties of Thin Walled Injection Molded Polypropylene K1870

作　　者：程敏 韩李旺 杨廷杰 苟荣恒 刘义 Cheng Min;Han Liwang;Yang Tingjie;Gou Rongheng;Liu Yi(CHN ENERGY Xinjiang Chemical Co.,Ltd.,Urumqi,Xinjiang 831400,China)

机构地区：[1]国能新疆化工有限公司,新疆乌鲁木齐831400

出　　处：《塑料助剂》2024年第1期22-25,39,共5页Plastics Additives

摘　　要：本文针对四种成核剂TD-531、NA-21、HPN-900ei和HPN-20E对薄壁注塑聚丙烯K1870的力学性能和光学性能的影响进行研究。结果表明,添加四种不同成核剂后,K1870的弯曲模量和拉伸强度均有不同程度的提高,添加1500 mg/kg成核剂,K1870的弯曲模量分别从空白聚丙烯的1410 MPa提升至1790 MPa、1770 MPa、1720 MPa和1620 MPa,拉伸强度分别从空白聚丙烯的34.2 MPa提升至37.4 MPa、37.1 MPa、36.8 MPa和36.7 MPa,其中TD-531的提升幅度最大,弯曲模量和拉伸强度分别提升27%和9.4%;随着成核剂浓度的增加,K1870的雾度逐渐降低,分别从空白聚丙烯的46.3%降低至38.2%、39.2%、41.2%和41.8%,透光率整体呈现升高趋势,分别从空白聚丙烯的80%升高至85.6%、85.3%、84.3%和84.2%;加入成核剂对聚丙烯的MFR影响不大,无须对聚丙烯加工工艺进行调整。This paper aims to discuss the effects of four nucleating agents(TD-531,NA-21,HPN-900ei and HPN-20E)on the mechanical and optical properties of thin walled injection molded polypropylene K1870.After the above mentioned four different nucleating agents were added respectively,the bending modulus and tensile strength of K1870 were improved at different degrees.When 1500 mg/kg four nucleating agents were added respectively,the bending modulus of K1870 increased from 1410 MPa to 1790 MPa,1770 MPa,1720 MPa and 1620 MPa respectively,while the tensile strength of which increased from 34.2 MPa to 37.4 MPa,37.1 MPa,36.8 MPa and 36.7 MPa respectively.Among them,TD-531 helps achieve the most obviously increase in bending modulus and tensile strength by 27%and 9.4%respectively.With the increase of nucleating agent concentration,the fog degree of K1870 decreased from 46.3%to 38.2%,39.2%,41.2%and 41.8%respectively,while the transmittance of K1870 increased from 80%to 85.6%,85.3%,84.3%and 84.2%respectively.The addition of nucleating agents has little effect on the MFR of polypropylene,so it is not necessary to adjust the processing technology of polypropylene from this aspect.

关 键 词：薄壁注塑 聚丙烯 成核剂 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]