简介：俄罗斯鄂木斯克炭黑集团宣布，其投资4亿卢布（约合人民币4120万元）在伏尔加格勒工厂新建的4万吨炭黑装置现已竣工投产。这是该厂的第4条炭黑生产线，新线的投产使该厂的产能提升至20万吨。

简介：以氢化钠（Nail）为活性剂，在Haake转矩流变仪中用4-溴代巴豆酸甲酯（MBC）改性丁基橡胶（IIR）制得产物MBCIIR，采用傅里叶变换红外光谱与核磁共振氢谱表征了产物，并考察了MBC用量、反应温度、改性时间及终止剂品种对MBCIIR硫化特性及物理机械性能的影响。

简介：Inthepresentpaper,novelsidewallmaterialsforaluminumreductioncellwerepreparedinairusingmagnesiaandmagnetiteasstartingmaterials.ThesinteringbehaviorsofthespecimenswereinvestigatedbymeansofX-raydiffraction(XRD)andscanningelectronmicroscope(SEM).AndcorrosiontestsinaNa_3AlF_6-AlF_3-K_3AlF_6bathwereconductedtoevaluatetheelectrolytecorrosionresistance.TheresultsshowthattheFe_3O_4phaseistransformedintoFe_2O_3athightemperatures,whichinturnreactswiththeMgOaddedtoformMgFe_2O_4spinel.AndwithincreasingtheMgOcontentfrom0to30mass%,densificationofthespecimensdecreasesmainlyduetolargervolumeexpansionresultingfromformationofmoreMgFe_2O_4.ThecorrosiontestsshowthatcorrosionlayersareproducedinalltheMgOaddedspecimens.However,forspecimenscontainingMgFe_2O_4phaseonly,Mg(Al,Fe)_2O_4compositespinellayersarealsogenerated,whichremarkablyimprovethecorrosionresistanceofthespecimens.