单分散菊状坡缕石-CaCO_3纳米复合粉体制备及表征

本文采用液相沉淀法制备了坡缕石-CaCO3(PG-nanoCaCO3)纳米复合粉体,用X-射线衍射(XRD)法和透射电子显微镜(TEM)对其物相组成和微观形貌进行了表征,以热重分析法对其热稳定性进行了分析,并对其相对白度进行了测试,结果证明:所制备的坡缕石-CaCO3纳米复合粉体的微观形貌为菊状单分散结构,平均粒度为2μm左右,相对白度达到95.83,热稳定性比纯坡缕石有极其显著的提高。     

Preparation and properties of PAn/ATTP/PE conductive composites

Polyaniline/Attapugite/PE（PAn-ATTP/PE）composites containing particles with core-shell structure were obtained via the two-step blending processs. The experimental condition is as follows： Organo-attapulgite and PAn was obtained by modifying attapulgite with laury benzenesulfonic acid sodium salt and, then added to PE. The electrical conductivity, structure and properties of the composites were studied. Under the function of shear stress, core-shell structure particles with ATTP as the core and PAn as the shell were formed in the composites. The structure of PAn-ATTP/PE composites were characterized by FTIR,XRD,SEM, etc, respectively. The effects of concentration of doping agent on the conductivity and mechanical property of the composites were investigated. The mechanical properties and impact fracture surface of the ternary composites were studied by means of the tensile tester, SEM, etc. The results show that polyaniline encapsulated ATTP enhances the strength of the PE. And the conductivity of PAn-ATTP/PE composites of is improved effectively when polyaniline encapsulated ATTP is added. The composite have good conductivity when 10% polyaniline encapsulated ATTP is added.     

镁合金金属型铸造涂料及制备方法

提供一种镁合金金属型铸造涂料及制备方法，其化学组分质量百分比为：滑石粉3～8％、硅藻士2～5％、粘结剂1．5～49／6、悬浮剂0．3～2％、阻燃剂2～7％和水75～90％。粘结剂可以为水玻璃、硅溶胶或磷酸铝，悬浮剂可以为凹凸棒粘土、坡缕石粘土等，阻燃剂可以为NH4BF4、KBF4、烷基磺酸钠和硼酸等。本发明制备的镁合金金属型铸造涂料，具有较强的保温性、阻燃性、粘结性和涂覆性，并且具有优良的悬浮性，     

零维及一维纳米坡缕石对润滑脂的摩擦性能对比

分别制备零维、短纤维状以及长纤维状的纳米坡缕石,添加到锂基润滑脂中,对试样进行四球摩擦试验,以便探究不同形态的纳米坡缕石对润滑脂摩擦性能的影响。结果表明,零维、短纤维状以及长纤维状的纳米坡缕石均能够改善润滑脂抗磨减摩性能;其中含零维及一维的短纤维纳米坡缕石润滑脂的减摩抗磨性能稳定性较好,而长纤维纳米坡缕石润滑脂的减摩抗磨性能稳定性较差。     

苏皖凹凸棒石粘土矿石评价的若干问题

根据苏皖凹凸棒石粘土矿石中主要矿物和伴生矿物的含量，并结合矿石的其它特征，可将凹凸棒石粘土矿石划分为凹凸棒石粘土、白云石凹凸棒石粘土、硅质凹凸棒石粘土、混合粘土及蒙脱粘土。在探讨凹凸棒石粘土中坡缕石含量与其物化性能关系的基础上，提出了评价凹凸棒石粘土矿石质量的参考意见。     

坡缕石提纯和活化方法研究与应用

结合近年来有关坡缕石改性研究的进展情况，简述了坡缕石结构和组成特点；坡缕石提纯中提纯难度的预判，无机及有机分散剂和搅拌方法的选用及相关机理；坡缕石活化中不同种类酸活化和热活化的效果和机理分析。