CAJ | 학술논문

采用乙酸钾插层改性高岭土后，与十八胺共混球磨制得表面疏水的插层改性高岭土，再与聚丙烯（ PP）熔融共混制得聚丙烯／改性高岭土复合材料。采用傅里叶变换红外光谱（ FTIR）、X射线衍射仪（ XRD）对改性高岭土进行表征；扫描电镜（SEM）、透射电镜（TEM）、拉力机和热重分析仪分别对复合材料的表面形貌、力学性能和热学性能进行测试。结果显示，插层改性后高岭土d001为1．42 nm，增加0．7 nm，插层率达到79．65％；改性高岭土片层较均匀分散在聚丙烯基体中，随着改性高岭土的添加量的增加，复合材料力学性能和热稳定性均明显改善，当改性高岭土的填充量为7％时复合材料的拉伸强度比纯PP增加34．22％，断裂伸长率增加29．33％。
채용을산갑삽층개성고령토후，여십팔알공혼구마제득표면소수적삽층개성고령토，재여취병희（ PP）용융공혼제득취병희／개성고령토복합재료。채용부리협변환홍외광보（ FTIR）、X사선연사의（ XRD）대개성고령토진행표정；소묘전경（SEM）、투사전경（TEM）、랍력궤화열중분석의분별대복합재료적표면형모、역학성능화열학성능진행측시。결과현시，삽층개성후고령토d001위1．42 nm，증가0．7 nm，삽층솔체도79．65％；개성고령토편층교균균분산재취병희기체중，수착개성고령토적첨가량적증가，복합재료역학성능화열은정성균명현개선，당개성고령토적전충량위7％시복합재료적랍신강도비순PP증가34．22％，단렬신장솔증가29．33％。
The Kaolin was intercalated by potassium acetate .Used the ball mill to shea the surface of mod-ified Kaolin with ODA to prepare hydrophobic intercalary modified Kaolin and got the PP /modified Kaolin composite materials by melt blending with PP .The structure of the modified Kaolin was characterized by FTIR and XRD.The morphology,mechanical properties and heat resistance of composite material have been observed through TEM ,SEM and TG .The results indicated that the intercalated Kaolin layer spacing was 1.42 nm,the layer spacing was increased 0.7 nm and intercalating rate reached 79.65%.The modi-fied Kaolin lamella was uniformly dispersed in PP matrix , with increasing the mass fraction of modified Kaolin,the mechanical properties and thermal stability of the materials were improved obviously .When the mass fraction of modified Kaolin was 7%,the tensile strength of the composites increasing 34.22%and the elongation at break increasing 29 .33%.