β成核剂对聚丙烯性能的影响  

Effect of β-nucleating Agent on Properties of Polypropylene

作　　者：李永桂 李剑 李彭[1] 高志强 陈海生[1] 毛荣俊 黄子衡 LI Yong-gui;LI Jian;LI Peng;GAO Zhi-qiang;CHEN Hai-sheng;MAO Rong-jun;HUANG Zi-heng(College of Packaging Design,Zhongshan Torch Polytechnic,Zhongshan 528436,China;R&D Center,Zhongshan Zhenghe Color Resources Co.,Ltd.,Zhongshan 528400,China)

机构地区：[1]中山火炬职业技术学院包装设计学院,广东中山528436 [2]中山市正合色彩资源有限公司研发中心,广东中山528400

出　　处：《塑料科技》2024年第11期96-99,共4页Plastics Science and Technology

基　　金：2022年度广东省普通高校重点领域专项(2022ZDZX3084);2023年度广东省普通高校重点领域专项(2023ZDZX3095);2023年中山市教育科研立项课题(B2023202);2020年度广东省普通高校重点领域专项(2020ZDZX2099);2023年中山火炬职业技术学院课程思政示范课程项目(2023KCSZ11)。

摘　　要：利用β成核剂对聚丙烯(PP)进行改性,制成β成核质量分数为5%的PP母粒。PP母粒与PP按照不同配比注塑成PP标准样条,并对PP样条进行力学性能测试。结果表明:β成核剂对均聚PP 1100N有极大的增韧作用。当β成核剂添加质量分数为0.02%时,常温缺口冲击强度由5.0 kJ/m^(2)增加至9.1 kJ/m^(2),提高了82%;在β成核剂添加质量分数为0.15%时,常温缺口冲击强度达到最大,从原来的5.0 kJ/m^(2)增加至11.5 kJ/m^(2),提高了130%。低温冲击强度随着β成核剂添加量的增加而增加,从2.0 kJ/m^(2)增加至2.6 kJ/m^(2),提高了30%。β成核剂的加入影响材料的拉伸性能。在β成核剂质量分数为0.05%时,拉伸强度达到最大的30.98 MPa,与未添加的空白样相比,拉伸强度提高了13.27%,断裂伸长率也由708.95%提高至1060.00%以上。β成核剂的加入影响材料的弯曲性能,降低材料的刚性,但影响程度不大。The polypropylene(PP)was modified byβ-nucleating agent to prepare PP masterbatch with theβ-nucleating mass fraction of 5%.The PP masterbatches are then injection molded with PP in various ratios to form PP standard test specimens,which are subsequently subjected to mechanical property testing.The results showed that theβ-nucleating agent had a significant toughening effect on the homopolymer PP 1100N.When the mass fraction ofβ-nucleating agent is 0.02%,the notched impact strength at room temperature increases from 5.0 kJ/m^(2) to 9.1 kJ/m^(2),with an increase of 82%.At a mass fraction of 0.15%,the notched impact strength at room temperature reaches its maximum,increasing from the original 5.0 kJ/m^(2) to 11.5 kJ/m^(2),with an increase of 130%.The low-temperature impact strength also increases with the addition ofβ-nucleating agents,from 2.0 kJ/m^(2) to 2.6 kJ/m^(2),with an increase of 30%.The incorporation ofβ-nucleating agents affects the tensile properties of the material.At a mass fraction of 0.05%ofβ-nucleating agent,the tensile strength reaches a maximum of 30.98 MPa,which is a 13.27%increase in tensile strength compared to the blank sample without addition,and the elongation at break also increases from 708.95%to over 1060.00%.The addition ofβ-nucleating agents affects the bending properties of the material and reduces its rigidity,but the impact is not significant.

关 键 词：聚丙烯 Β成核剂 增韧 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]