硅铝炭黑／高密度聚乙烯体系的力学性能

MECHNICAL PROPERTIES OF HIGH- DENSITY POLYBTHYLENE TOUGHENBD BY SILICON ALUMINIUN CARBONS

用透射电镜和Ｘ－射线衍射法对硅铝炭黑（ＳＡＣ）的形态结构作了研究。通过正交试验考察ＳＡＣ的粒度、配比、表面活性等因素对硅铝炭，黑（ＳＡＣ）／高密度聚乙烯（ＨＤＰＥ）体系力学性能的影响规律，结果表明，ＳＡＣ的晶体结构性质较差，是一种无规则粒子，其中存在α－ＳｉＯ２双六角晶形，具有一定的表面活性，对补强作用有利，用３２０目的ＳＡＣ，按ＨＤＰＥ质量的２５％配比所得板材试样的力学性能有明显提高。

The morphological structure of silicon aluminium carbons(SAC)was studied by transmission electron microscope and X-ray diffraction. The law of ef- fect of such factors as graininess,compounding and surface activity on mechnical properties of SAC/HDPE system was studied by orthogonal experiment.The re-sults show that the structure properties of SAC is lower.It is a collection of irregu- iar particles.In SAC exists a -SiO2 structure,which has a certain surface activity and it has strengthening action. The mechanical properties of test sample of sheet materials made with SAC of 320 bores and by 25% of HDPE mass was obviously improved.