CAJ | 학술논문

　　用油酸钠/乙醇溶液、邻二氯苯、N-甲基吡咯烷酮对膨胀石墨进行表面处理和分散改性并制备了纳米石墨微片(GNP),研究了其效果，确定了油酸钠/乙醇溶液作为分散介质和表面改性剂。将由该处理剂制得的GNP以不同添加量添加到聚丙烯/聚烯烃弹性体共混树脂（PP/POE）中，制得PP/POE/GNP复合材料。测试表明，GNP在基体中分散均匀，大部分达到纳米尺寸，与基体结合良好，复合材料的室温渗滤阈值为9%左右（对应GNP质量份数为10份），GNP质量份数超过10份之后复合材料成为半导体，最低体积电阻率为3.6×107Ω· cm。当GNP质量份数为20份时，复合材料仍然保持较佳力学性能，材料破坏方式为脆性断裂。
　　용유산납/을순용액、린이록분、N-갑기필각완동대팽창석묵진행표면처리화분산개성병제비료납미석묵미편(GNP),연구료기효과，학정료유산납/을순용액작위분산개질화표면개성제。장유해처리제제득적GNP이불동첨가량첨가도취병희/취희경탄성체공혼수지（PP/POE）중，제득PP/POE/GNP복합재료。측시표명，GNP재기체중분산균균，대부분체도납미척촌，여기체결합량호，복합재료적실온삼려역치위9%좌우（대응GNP질량빈수위10빈），GNP질량빈수초과10빈지후복합재료성위반도체，최저체적전조솔위3.6×107Ω· cm。당GNP질량빈수위20빈시，복합재료잉연보지교가역학성능，재료파배방식위취성단렬。
Sodium oleate-ethanol mixed solution,orthodichlorobenzene and 1-Methyl-2-pyrrolidinone were dividedly used for the surface treatment on the expanded graphite and the graphite nanoplatelets(GNP)were prepared. Then treatment effect was studied and sodium oleate-ethanol mixed solution was selected as the dispersion medium and surface modifier for the expanded graphite. Polypropylene/polyolefin elastomer/GNP composites with different contents of GNP were prepared using the sodium oleate as the treating agent.The measurements indicate that GNP are homogenously dispersed in the polymer matrix, most of which are nano-size particles,and also bond well with the polymer matrix. The percolation value of the composites is about 9%(correstponding to the content of GNP being 10 phr). The composites become semi-conductor when the filler content is beyond 10 phr and the minimum volume resistance is 3.6×107 Ω· cm. The mechanical tests of the composites show that the composites maintain good mechanical properties when the content of GNP is 20 phr,and the failure mode of the composites is brittle fracture.