PET/EN-MFMB共混体系力学性能的研究  

Mechanical Properties of PET/EN-MFMB Polymer Blends

作　　者：周俊峰[1] 王小娟[1] 王振峰 王连心[1] 宫瑾[1] 王经武[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450052 [2]鹤煤集团有限公司511厂,河南鹤壁456600

出　　处：《塑料工业》2005年第6期23-27,共5页China Plastics Industry

摘　　要：采用自制的EN型多功能母料(ENMFMB)与PET热机械共混制得不同ENMFMB用量的PET/ENMFMB,研究了其拉伸屈服应力、弯曲模量和缺口冲击强度。结果表明采用ENMFMB改性PET,可使PET的韧性大幅度提高,同时还能保持原刚性,当ENMFMB质量分数为24.2%时,缺口冲击强度提高到了4.54倍,拉伸屈服应力和弯曲模量基本保持不变;随着E∶N质量比的减小,PET/ENMFMB1的拉伸屈服应力稍微逐渐降低,弯曲模量基本不变,缺口冲击强度逐渐提高。m(Ce)∶m(Rs)=6∶4时制得的ENMFMB对PET改性综合效果比较好,其综合力学性能比PET/PNMFMB、PET/EMMFMB的好。The tensile yield stress,flexural modulus,notched Izod impact strength of modified PET,including PET/EN-MFMB,PET/EN-MFMB (E∶N),and PET/EN-MFMB (Ce/Rs),with different elastomer content prepared by thermal-mechanical blending PET with self-made modification multifunctional masterbatch (EN-MFMB) were investigated.The results showed that when PET was modified by EN-MFMB,the toughness of PET was largely increased,and at the same time the rigidity of PET kept unchanged.When the content of EN-MFMB was 24.2%,the notched Izod impact strength of PET increased up to 4.54-fold,with its tensile yield stress and bending modulus kept unchanged.FM were 103% and 99% of that of the pristine PET respectively.With the decrease of the ratio of E-resin to N-elastomer (E∶N),the tensile yield stress decreased little,bending modulus kept unchanged,and the notched Izod impact strength of PET/EN-MFMB (E∶N) increased gradually.When the ratio of Ce to Rs (Ce/Rs) in the MFMB was about 6∶4,the modification effect for PET was the best.The overall mechanical properties of PET/EN-MFMB were better than those of PET/PN-MFMB and PET/EM-MFMB blends.

关 键 词：EN型多功能母料 聚对苯二甲酸乙二醇酯 共混体系 力学性能 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]