聚丙烯

The CMC grafted polyacrylamide co polyacrylic acid at the same time was produced. The redox system of patassium sulfate and sodium bisulfite was used as the initiator instead of the cerous ammonium nitrate because of its cheapness.

以羧甲基纤维素为基质，以过硫酸钾-亚硫酸氢钠氧化还原引发体系代替相对昂贵的硝酸铈铵引发剂，成功的制备了羧甲基纤维素同时接枝聚丙烯酰胺-聚丙烯酸共聚物。

The Carboxymethyl Cellulose grafted polyacrylamide was synthesized with the cerous ammonium nitrate as the initiator and the absorbent resin with excellent water absorbing abilities was produced through hydrolyzing the CMC-g-PAM.

以羧甲基纤维素为基质，以硝酸铈铵为引发剂，成功的制备了羧甲基纤维素接枝聚丙烯酰胺，进一步水解获得了具有优异吸水性能的高吸水树脂。

The wood-cellulose grafted polyacrylamide was synthesized with the cerous ammonium nitrate as the initiator. The absorbent resin was produced through hydrolyzing the Cell-g-PAM.

以木纤维为基质，硝酸铈铵为引发剂，成功的制备了纤维素接枝聚丙烯酰胺共聚物，进一步经过碱性水解，获得了具有一定吸水性能的吸水树脂。

Organic and compound cation garrulous coagulates the agent is to use chemical law compound a kind of new-style cation garrulous coagulates agent, belong to domestic and international initiate, with other and groovy drug photograph comparing has 5 big advantages: The photograph such as aluminium of as aggregate as commonly used drug chloridize, aggregate and vitriolic iron, vitriolic aluminium is compared, coagulate with garrulous of polypropylene acyl amine the agent is used jointly, medical dose is little, reduce useless water treatment to expend about 20 ％ thereby, 30 ％; Effect of processing liquid waste is good, garrulous is round settling speed is fast, make liquid waste can second birth is used, managing water natural resources; Its garrulous group is sedimentary filterability can be good, slime can reclaim inside entire plant, namely energy-saving be helpful for protecting an environment again; Corrode to equipment small; Have muti_function, have agglomeration effect already, again garrulous coagulates action and the action that aid filter, can serve as filter aid.内容来自www.ch-water.com

有机复合阳离子絮凝(使液体中悬浮微粒集聚变大或形成絮团，从而加快粒子聚沉，达到固-液分离的过程)剂是利用化学法合成的一种新型阳离子絮凝(使液体中悬浮微粒集聚变大或形成絮团，从而加快粒子聚沉，达到固-液分离的过程)剂，属国内外首创，与其他常规药剂相比具有五大优点：与常用药剂聚合氯化铝、聚合硫酸铁、硫酸铝等相比，与聚丙烯酰胺类絮凝(使液体中悬浮微粒集聚变大或形成絮团，从而加快粒子聚沉，达到固-液分离的过程)剂联合使用，药剂量少，从而降低废水处理(通过物化方法去除水中一些物质的过程)费约20％—30％；处理废水效果好，絮团沉降速度快，使废水能再生利用，节约水资源；其絮团沉渣过滤性能好，煤泥可全部厂内回收，即节能又有利于保护环境；对设备腐蚀小；具有多功能，既有凝聚作用，又有絮凝(使液体中悬浮微粒集聚变大或形成絮团，从而加快粒子聚沉，达到固-液分离的过程)作用和助滤作用，可作为助滤剂。

The surfaces of polymers such as PP are preferentially made up of low molecular weight chains, creating a cohesively weak boundary layer.

表面的聚合物，例如聚丙烯择优了低分子量链创造一个偌大的弱边界层。

Result of thermogravity analysis showed that the thermal stability of polyvinylamine chloride lowers with increasing in amination degree. Moreover, properties of dilute aqueous solutions of three types of poly chloride with different amination degree were compared by use of viscosimetric, conductometric, and potentiometric measurements. Results showed that both the electrostatic interaction of neighboring groups on the chain and the reduced viscosity of poly chloride are increased with increasing the degree of amination of poly . The equivalent conductivity is decreased with the increasing the concentration of poly chloride and increased with the increasing the amination degree of poly .

研究了聚乙烯胺盐酸盐的热稳定性和水溶液性质，发现：随着胺化度的提高，聚乙烯胺盐酸盐的对热稳定性逐步降低；聚乙烯胺盐酸盐是一种典型的聚电解质，其水溶液的pH值随平均分子量的变化并不明显，而随着聚乙烯胺胺化度的升高，pH值降低；随着聚乙烯胺盐酸盐的平均聚合度由82.3增加到201.8，它的m值（用于表征聚电解质侧链基团之间相互作用大小的常数）从5.13升高到5.58，而当聚乙烯胺盐酸盐的平均聚合度增加到311.4时，它的m值反而降低到了5.48；随着胺化度由55.65%升高到82.36%，m值由3.65提高到5.50；随着聚乙烯胺盐酸盐的平均聚合度的提高，聚乙烯胺盐酸盐的平均解离常数由7.48降低到7.26，同时随着胺化度的提高，聚乙烯胺盐酸盐的平均解离常数也由8.33降低到7.37；随着聚乙烯胺盐酸盐浓度的提高，溶液的摩尔电导率逐步降低，随着聚乙烯胺胺化度和聚合度的提高，溶液的摩尔电导率有所升高；在pH值为4左右时，聚乙烯胺盐酸盐的比浓粘度分别达到极值，而与聚合度的大小关系不大；聚乙烯胺盐酸盐的特性粘数明显高于其原料聚丙烯酰胺的特性粘数，分子量对特性粘数的影响十分明显，胺化度对特性粘数的影响并不显著。

In this paper the author invented a new quick initiation system to initiate AM and DMC to copolymerize and get high molecular weight .

本文利用实验室自制的混合快速引发体系，并且通过对丙烯酰胺和和2-甲基丙烯酰氧乙基三甲基氯化铵两段共聚法，合成高分子量的PAM-DM C阳离子聚丙烯酰胺。

The zymogramatic variations of esterase isoenzyme and superoxide dismutase isoenzyme of 20 sample materials, including 5 species, 2 varieties, 1 multiploid of Isatis L. and 1 outgroup species, Coronopus didymus J. E. Smith, were analyzed with technique of polyacrylamide gel electrophoresis.

采用聚丙烯酰胺凝胶电泳，比较了菘蓝属5种2变种1多倍体品种及1外类群种共计20个样本的酯酶同工酶和超氧化物歧化酶同工酶的酶谱差异，并运用数量分类学的原理和方法对酶谱数据进行了聚类分析。

In order to clarify the rules of POD isoenzyme in the hazelnut, identify their blood relations between female, male and filial generations and select the superior parents for cross-breeding, we have studied the characteristics of peroxidase isoenzyme which are distributed in the 34 hazelnut varieties or lines by polyarclamide gel electrophoresis, The results showed that:POD isoenzymes of Corylus heterophylla Fisch, Corylus avellana L, and the hybrid of Corylus heterophylla Fisch × Corylus avellana L had obvious difference; some hybrids had lost P10 spectrum band of parents; the enzyme spectrum of 32 hybrid hazelnuts produced 'new hybrid spectrum bands'that could be considered as a mean to identify hybrids.

为了阐明过氧化物同工酶在榛品种中的分布规律，探讨平榛、欧榛及其杂种榛之间的亲缘关系，选育优势杂交亲本，本试验采用聚丙烯酰胺凝胶垂直电泳，研究了34个榛品种成熟叶过氧化物酶同工酶酶谱特征，结果表明：平榛、欧榛及其平欧杂种榛品种间酶谱具有较大差异；有的杂种品种遗失了父母本共有谱带P10；32个平欧杂种榛品种出现了双亲所不具有的新酶带，可作为鉴别杂种的一条途径。

This cosmetically elegant and durable trapezoidal enclosure is made of high-impact polypropylene with a metal grille.

这件化妆用优雅而持久的梯形附件以一个金属制的格子是用高冲击聚丙烯做成的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。