蒽系列成核剂的合成及对聚丙烯性能的影响  

Synthesis of Anthracene Series Nucleating Agents and Their Influence on the Properties of Isotactic Polypropylene

作　　者：吕志平[1] 李海艳[1] 吴冉[1] 孙建[1] 吴怡康[1] 

机构地区：[1]太原理工大学精细化工研究所,山西太原030024

出　　处：《精细化工》2014年第8期1009-1014,1052,共7页Fine Chemicals

摘　　要：利用蒽为基础原料,自制了蒽系列的3种聚丙烯成核剂:9,10-二氢蒽-9,10-桥-α,β-马来酸酐(AMH)、9,10-二氢蒽-9,10-桥-α,β-马来酰肼(AMHD)、9,10-二氢蒽-9,10-桥-α,β-N-甘氨酸基马来酰胺(AGMA)。利用热重分析(TGA)分别考察了三者的热稳定性,采用X射线衍射分析(XRD)和偏光显微镜(PLM)对其所改性等规聚丙烯(iPP)的结晶形态进行了表征,用差示扫描量热法(DSC)研究了其结晶行为,并测试了其力学性能。结果表明,AMHD和AGMA均可增强聚丙烯α晶型成核,而AMH则可诱导β-iPP的生成;3种成核剂都有效提高了聚丙烯的结晶温度(Tc)和结晶度,其中,iPP/AMHD的结晶度(Xc)提高了3.75%;同时改善了iPP的力学性能,与纯iPP试样相比,iPP/AMH抗冲击强度提高了5.60 kJ/m2,iPP/AMHD拉伸强度提高了18.02%,iPP/AGMA的弯曲强度达到53.22 MPa。With anthracene as raw material, three nucleating agents （AMH, AMHD and AGMA） of anthracene series compounds were synthesized. Their thermal stability was individually investigated by using thermogravimetric analysis （TGA）. X-ray diffraction （XRD） and polarized light microscopy （PLM） were adopted to characterize the crystalline morphology of the modified isotactic polypropylenes （iPP）. The crystallization behavior of iPP was studied with the aid of differential scanning calorimetry （DSC）. The mechanical properties of iPP were also tested. The results manifest that AMHD and AGMA could both reinforce nucleation of a-crystalline iPP,while AMH could induce the production of fl-iPP. Not only did these three nucleating agents enhance the crystallization temperature （ Tc ） and crystallinity （ Xe ） of iPP effectively, but they also improved the mechanical properties of iPP, that is, the Xe of iPP/ AMHD rose by 3.75%. Compared with pure iPP, the impact strength of iPP/PHD increased by 5.60 kJ/m2 ,while the tensile strength of iPP/AMHD by 18.02%, and the flexural strength of iPP/AMHD was up to 53.22 MPa.

关 键 词：成核剂 等规聚丙烯 晶型 性能 橡塑助剂 

分 类 号：TQ322.96[化学工程—合成树脂塑料工业]