您要查找的是不是：
- Introducing polar group onto molecular structure of PP via chemical reaction is deemed as a primary means for functionalization of PP. 通过化学反应在PP分子结构中引入极性基团是达到PP功能化的根本途径。
- The melting graft reaction between maleic anhydride(MAH)and polyethylene wax(PEW)was studied,and polar group was added to the chain of PEW successfully. 研究了聚乙烯蜡(PEW)与马来酸酐(MAH)熔融接枝反应,在PEW分子链上引入了极性基团。
- The results show that the content of polar group and the specific surface area increase so as to improve the wettability between the aramid fiber and epoxy resin. 结果表明:超声处理后,纤维表面极性官能团含量增加,比表面积加大,从而改善了芳纶纤维和环氧树脂之间的浸润性。
- The effects of the length of alkyl-chain,the polar group and the number of carboxyl group on rust-inhibiting properties and solubility were investigated in systematically. 合成并研究了水溶性有机羧酸醇铵盐类防锈剂, 系统地考察了烷链的长度、极性基团、羧基的个数对防锈性能和溶解度的影响。
- The CMAE monomer serves as a reactant to be grafted onto PP chain to introduce polar groups onto the nonpolar PP chain. 选用偶联马来酸酯(CMAE)为单体,通过反应性挤出加工使PP分子链接枝上极性官能团,从而防止了PP的降解。
- This paper synthesized a kind of oil-solubility viscosity reducer including polar groups and surfaceactive groups. 合成了一种集较强极性基团和表面活性基团为一体的油溶性降黏剂。
- The two systems of government are polar opposites. 这两种政体正好相反。
- Hydrophobic chains join the France-based method of raw materials used in compounds containing spacer group, and already contains two polar groups, by adding two hydrophobic hydrocarbon chains can be. 疏水链基加入法方法所采用的原料化合物中含有联接基团，并且已含有两个极性基团，加入两条碳氢疏水链即可。
- The ultraviolet irradiated polypropylene (PP) with the oxygen polar groups on its chain was blended with the inorganic filler STC (Sericite-Tridymite-Cristobalite). 聚丙烯在室温、空气下,通过低能、短时间的紫外光辐照,在其分子链上引入了含氧的极性基团。
- The affinity between HDPE and sericite tridymite cristobabite (STC), and the mechanical properties of HDPE/STC blend are improved quite a lot owing to the polar groups introduced. 本文研究了电子束辐照HDPE(e-HDPE)放置后效应及其对e-HDPE/STC共混体系力学性能的影响,采用人工加速热氧化及光氧化的方法,对e-HDPE/STC共混体系的热氧化及光氧化稳定性进行了研究。
- The analysis indicates that a notable characteristic of viscosity reducers is to induct side chain with polarity group and active surface on the original ester molecule matrix. 分析认为，降粘剂研究的一个显著特点是在原来酯性分子骨架上引入具有极性基团或表面活性的侧链等。
- The results suggested that the treatment of hydrogen could remove the amorphous carbon and the polar groups on MWCNTs, resulting in the decrease of surface area and water absorbing capacity and having the ends of MWCNTs cut. 经过纯化的MWCNTs(PMWCNTs)的吸水率远小于活性炭，比Carbopack B稍大，比表面积和Carbopack B相近。
- Organo-montomorillonites with hydroxyl, epoxy and no polar groups were prepared.They were used to prepare PP/clay nanocomposite materials with maleic anhydride-PP as a compatilizer. 摘要采用不同的有机改性剂制备了三种含羟基极性基团、环氧基和不含极性基团的有机化蒙脱土，并与混有少量马来酸酐接枝聚丙烯的聚丙烯基体进行复合，制备了聚丙烯粘土纳米复合材料。
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- When the value of SO2/NH3 is 10/6, the content of -SO3H is 49.93% of the surficial introduced polar groups, the modified PET film gains the best blood compatibility, APTT achieves 62.0s. 3. SO2/NH3值为10/6，表面-SO3H占引入极性基团的49.;93%25时材料的抗凝血性能最佳，APTT达到62
- He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
- The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。
- The group was made up of doctors. 这个团体是由医生组成的。
- A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
