According to the mechanisms of ethylene tetramerization, we have studied nine cocatalysts and seven donors in PNP/Cr(Ⅲ)/cocatalyst .
在本课题的研究中,基于乙烯四聚反应机理,考察了9种助催化剂(包括5种烷基铝助催化剂和4种烷基铝氧烷助催化剂)和7种促进剂在PNP/Cr(Ⅲ)/助催化剂和/或促进剂乙烯四聚催化体系中所起的作用,主要是研究其对1-辛烯选择性和催化剂活性的影响,得到了一系列有价值的结果和结论。
So it is very important to study the catalysts of ethylene tetramerization.
所以,对乙烯四聚催化体系的研究具有重大的现实意义。
According to the mechanisms of ethylene tetramerization, ten ligands were designed、synthesized in this study.
本研究基于乙烯四聚反应机理进行了催化剂的设计,共合成了10个配体,考察了配体在催化体系中的作用,并对其中4个配体重点考察了配体结构、反应温度、Al/Cr摩尔比、PNP/Cr摩尔比对1-辛烯选择性和催化剂活性的影响,确定了适宜的工艺条件。
Fabrication and Wear Property of Electroless Co-P-PTFE Composite Coatings;
钴、磷、聚四氟乙烯复合镀层性能研究
DAMAGE ANALYSES OF PTFE LINING IN CRUDE DISTILLATION COLUMN;
粗馏塔釜聚四氟乙烯衬里的破坏分析
Analysis of Causes Leading to Destruction of PTFE lining in Coarse Fractionating Tower;
粗馏塔聚四氟乙烯衬里的破坏分析
Build-up spiral pipe condenser made of glass lining and teflon;
搪玻璃聚四氟乙烯组合盘管冷凝器
The serviceability and development of teflon used as lubricant additive;
聚四氟乙烯润滑添加剂的使用性能与发展
This paper analyzes the main causes of corrosion on boilers' gas pipelines,puts forth the measure of teflon-steel coated thermoplastic inner-cased pipe,which was implemented.
分析了造成锅炉煤气管道系统腐蚀的主要原因,提出并实施了采用聚四氟乙烯钢覆热滚塑内衬管道的解决办法。
Effects of Fillers on the Tribological Properties of Polytetrafluoroethylene Based Composites;
填充材料对聚四氟乙烯基复合材料摩擦学特性的影响
Main Moulding Products of Polytetrafluoroethylene and Their Processing Technology;
聚四氟乙烯主要成型制品及生产工艺
Preparation of stretching porous polytetrafluoroethylene membrane;
聚四氟乙烯拉伸微孔膜的制备
polytetrafluror-ethylene (teflon)
聚四氟乙烯（特氟隆）
teflon insulated wire
聚四氟乙烯绝缘电线
teflon clad fiber
聚四氟乙烯包层光纤
polytetrafluoroethylene aqueous dispersio
聚四氟乙烯水分散液
teflon coaxial cable
聚四氟乙烯同轴电缆
polytetrafluoroethylene coated dry film
聚四氟乙烯涂覆薄膜
The enterprise dongyang sihuan antisepsis equipment co., ltd. offers among other things Polytetrafluor ethylene and Polytetrafluoroethylene.
公司专业从事聚四氟乙烯以及聚四氟乙烯业务。
Advances in the Study of Polytetrafluoroethylene-like Fluorocarbon Film Deposition;
聚四氟乙烯结构氟碳聚合物薄膜的研究进展
Research of the Charge Storage Properties of Porous PTFE/PE/PP Trinal-layer Films;
多孔聚四氟乙烯/聚乙烯/聚丙烯驻极体储电性能的研究
Piezoelectricity of laminated polymer films made of nonporous fluoroethylene and porous polytetrafluoroethylene layers
聚四氟乙烯和氟化乙丙烯共聚物复合膜的压电性
general tolerance for polyterafluorethyene (machine cut)
聚四氟乙烯基本规定公差（切削加工）
Polytetrafluorothylene envelope gaskets for pipe flanges
管法兰用聚四氟乙烯包覆垫片
Polytetrafluoroethylene envelope gaskets for pipe flanges
GB/T13404-1992管法兰用聚四氟乙烯包复垫片
polytetrafluoroethylene powder for molding and extrusion materials
聚四氟乙烯模塑和挤出材料
method for determination of dimension of polytetrafluoroethylene parts
聚四氟乙烯产品尺寸测定法
PTFE Raw Material Belt
聚四氟乙烯生料带，又名密封带、止泄带
testing methods for polytetrafluoroethylene aqueous dispersion m3070
聚四氟乙烯水分散体试验方法
Application of Fluon in Repairing Lathe Guide Rail
聚四氟乙烯在机床导轨修复中的应用