单体

The stability of isophorone disocyanate and the affecting factors of in-situ miniemulsion polymerization have been studied to carry out the simutaneous or two-step procesure of polyaddition and radical polymerization.

本文主要研究了水敏性单体IPDI的稳定性和原位细乳液聚合规律，探索在细乳液中分步或同步实现缩聚反应与自由基聚合的新方法，提出了水敏性单体的细乳液聚合实施方法。

Firstly, polyacrylamide with 26 million molecular weight was compounded in lab through establishing optimum compounding initiator proportionality of 1:1. 3 and mass concentration of 170 mgL^(-1), temperature of 10 ℃, acrylamide mass percentage of 25%, electrical conductivity of 3.6 μSm^(-1) and pH value of 6.57. The salt-resistance, thermal endurance and shear-resistance of polyacrylamide could be enhanced b introducing sulfonic acid group or styrene sulfonate group or drawing the two groups above at the same time. Secondly, chelator HEDP, bactericide isoquinoline ketone and oxygen scavenger thiourea were optimized to improve the compatibility of polyacrylamide and formation water.

在由室内试验确定了复合引发剂最佳比值1：1.3和质量浓度170 mgL^(-1)、合成最佳温度10℃、丙烯酰胺单体质量分数25%、电导率3.6μSm^(-1)和pH值6.57后，合成出相对分子质量高于2.6×10^7的聚丙烯酰胺，同时通过丙烯酰胺单体复配引入磺酸基团、苯乙烯磺酸基团或同时引入此两种基团，提高了聚合物的抗盐、抗温、抗剪切性能；后针对聚丙烯酰胺与地层水配伍性差的问题，优选出HEDP螯合剂、异噻唑烷酮杀菌剂和除氧剂硫脲，对聚合物稳定效果明显。

The itaconic acid carboxylated ACM has better cure characteristics and mechanical properties than the acrylic acid carboxylated ACM.

以衣康酸为交联单体的ACM的硫化特性和机械性能好于以丙烯酸为交联单体的ACM。

The emulsifiers used were compounded systems composed of anionic and nonionic surfactants. Other conditions such as initiator, reaction temperature, and the amount of MAA also influenced the properties of the latices.

同时，软硬单体比例、具有亲水功能的甲基丙烯酸MAA单体的用量、反应温度和引发剂的用量等对胶乳的粒径和应用后织物的性能都有不同程度的影响。

The latices were stable ,thixotropic and monodisperse .The particle sizes range from 192 to 94 nm depending on the acrylamide fractions. The Hofmann reactions of these latices were carried out to introduce primary amines on the particle surface.

由于一直以来，丙烯酰胺-苯乙烯的共聚物胶乳只能用于制备两性胶乳，为了得到较高的胺化度，我们对不同单体配比的丙烯酰胺-苯乙烯共聚物胶乳进行Hofmann反应，探讨了丙烯酰胺在单体中所占的比例对Hofmann反应的影响。

Two kinds of cross-linked polyacrylate latices with relatively narrow distribution of particle diameters, which are abbreviated to P and P/P, were synthesized by seeded emulsion co-polymerization, respectively. Butyl acrylate and 2-ethylhexy! acrylate were used as comonomers of ACR core, styrene and methyl methacrylate were employed as comonomers of ACR shell, and 1,4-butanediol diacrylate was used as cross-linking agent.

采用丙烯酸丁酯和丙烯酸2-乙基己酯(2-EHA)为核层单体、苯乙烯和甲基丙烯酸甲酯为壳层单体、1，4-丁二醇二丙烯酸酯为交联剂，通过多步种子乳液聚合方法合成了P、P／P两种具有窄粒径分布的共聚丙烯酸酯胶乳。

Monomers A monomer is the basic building block of polymers.The word mer (from the Greek meros,meaning part) indicates the smallest repetitive unit,similar to the term unit cell in crystal structures.Thus,polymer means many mers or units.Monomers are organic materials.They include carbon atoms joined in covalent bonds with other atoms such as hudrogen,oxygen,nitrogen,fluorine,chlorine,silicon,and sulfur.

单体 单体是基本积木的polymers.the字经（从希腊美罗斯，这意味着部分）显示，最小的重复单位，类似的任期股细胞在晶体structures.thus ，高分子意味着许多市场汇率或units.monomers是有机materials.they包括碳原子加入共价键，与其他原子如hudrogen ，氧气，氮气，氟，氯，硅，硫。

Reverse osmosis composite membrane was prepared by interfacial polymerization of metaphenylene diamine with trimesoyl chloride on the surface of polysulfone support.

以聚砜超滤膜为支撑膜，间苯二胺为水相功能单体，均苯三甲酰氯为油相功能单体，通过界面聚合法制备了反渗透复合膜。

Visit folding carton unknown monosomic fedina, typically by gas chromatography and mass spectrometry, through the identification of unknown monosomic by mass spectrometry.

在考察折叠纸盒未知单体的情况时，通常将气相色谱分析法与质量法一起使用，通过质谱法鉴别未知单体。

A series of newl naphthalenic sulfonated polyimides were synthesized using 1,4,5,8-naphthalenetetracarboxylic dianhydride, 2,2'-benzidinedisulfonic acid by one-step high temperature polymerization method. The sulfonated degree of SPI-X membranes was controlled through adjusting the molar ratio of BDSA to the non-sulfonated diamines.

采用1，4，5，8-萘四酸二酐、2，2′-联苯二胺双磺酸和APBA为单体，通过高温一步聚合法合成了含有噁唑环的新型磺化聚酰亚胺，通过调节二胺单体的比例控制磺化程度。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新