CAJ | 학술논문

以聚丁二酸丁二醇酯(PBS)为基材,经十六烷基三甲基溴化铵(CTAB)改性过的纳米蒙脱土为填料,采用熔融共混法,制备了PBS/MMT纳米复合材料,并研究了该复合材料的热稳定性能、力学性能和流变性能等.结果表明:当改性nano-MMT的添加质量分数为5%时,复合材料的熔点约提高了2.55 ℃,热初始分解温度提高了33 ℃;当其添加质量分数为3%时,复合材料的拉伸强度提高了9%,断裂伸长率提高了3%,冲击强度提高了23%;复合材料的流变性能比纯PBS的流变性能有一定程度的提高.
이취정이산정이순지(PBS)위기재,경십륙완기삼갑기추화안(CTAB)개성과적납미몽탈토위전료,채용용융공혼법,제비료PBS/MMT납미복합재료,병연구료해복합재료적열은정성능、역학성능화류변성능등.결과표명:당개성nano-MMT적첨가질량분수위5%시,복합재료적용점약제고료2.55 ℃,열초시분해온도제고료33 ℃;당기첨가질량분수위3%시,복합재료적랍신강도제고료9%,단렬신장솔제고료3%,충격강도제고료23%;복합재료적류변성능비순PBS적류변성능유일정정도적제고.
PBS was blended in a twin-screw extruder with nanoscale MMT modified with CTAB to provide PBS/MMT nanocomposite. The heat resistance, mechanical properties and rheological properties of PBS/MMT nanocomposite were studied. The results showed that when PBS was blended with nanoscale MMT modified by 5wt%, the melting point of PBS/MMT nanocomposite increased by about 2.55℃, the initial heat decomposition temperature increased by about 33℃. When PBS was blended with nanoscale MMT modified by 3wt%, the tensile strength of PBS/MMT nanocomposite increased by 9%, break elongating by 3%, impact strength increased by about 23%. Meanwhile, the rheological properties of PBS/MMT nanocomposite increased to certain degree compared with pure PBS.