CAJ | 학술논문

按ASTM标准测定聚丙烯（PP）以及PP接枝马来酸酐（MAH）的产物（PP—g—MAH）、PP接枝丙烯酸丁酯（BA）的产物（PP-g—BA）的力学性能和耐热性能，并利用红外吸收光谱（IR）、X-射线衍射（XRD）、差示扫描量热法（DSC）、扫捕电子显微镜（SEM）和热失重分析（TGA）等方法测试它们的结构．实验结果表明：由于MAH或BA接枝后都不仅能保持PP主链的α品型．而且都带进极性基团C=O基，促使MAH接枝产物（PP—g—MAH）或BA接枝产物（PP-g-BA）分子链之间的相互作用力增大，从而弯曲强度、弯曲模量、拉伸强度和拉伸模量都大于PP．并且当温度高于442％时热稳定性也都大于PP．
안ASTM표준측정취병희（PP）이급PP접지마래산항（MAH）적산물（PP—g—MAH）、PP접지병희산정지（BA）적산물（PP-g—BA）적역학성능화내열성능，병이용홍외흡수광보（IR）、X-사선연사（XRD）、차시소묘량열법（DSC）、소포전자현미경（SEM）화열실중분석（TGA）등방법측시타문적결구．실험결과표명：유우MAH혹BA접지후도불부능보지PP주련적α품형．이차도대진겁성기단C=O기，촉사MAH접지산물（PP—g—MAH）혹BA접지산물（PP-g-BA）분자련지간적상호작용력증대，종이만곡강도、만곡모량、랍신강도화랍신모량도대우PP．병차당온도고우442％시열은정성야도대우PP．
The mechanical performance and thermal stability of the polypropylene（PP）, the grafted copolymer（PP-g-MAH） of PP grafted maleic anhydride（MAH） and the grafted copolymer （PP-g-BA） of PP grafted butyl acrylate （BA） were measured according to the ATSM standard method. The structures of these polymers were characterized by means of IR, XRD, DSC, SEM and TGA. The results showed that the grafted copolymers could not only maintain the a-crystal form of PP, but also bring in polar carbonyl groups （C = O） after PP grafted MAH or BA, which enhanced the intermolecular interactions between the molecular chain of grafted copolymer PP-g-MAH or PP-g-BA. Therefore, the flexural strength, flexural modulus, tensile strength and tensile modulus of PP-g-MAH or PP-g-BA were all better than those of PP, and the thermal stability of PP-g-MAH or PP-g-BA over 442 ℃ was also better than PP.