查询词典 block polymer

Exhibit manufactures: Heat preservation system of thin plasterer polybenzene board; Heat preservation system of polymer expand vitrification micro-bead ; Heat preservation grit and slurry system made from glue powder and poly benzene grain; Spot epispastic attemperator, Heat preservation of floor and roof, waterproof grit and slurry, heat preservation ceramic tile felt grit and slurry, calking material, soft water－prof greasy, felt grit and slurry blended gas block, render plasterer blended gas block grit and slurry, level ground grit and slurry and other series products.

参展产品：薄抹灰板、聚合物膨胀玻化微珠、胶粉聚苯颗粒、聚氨酯等墙体、楼板及屋面保温体系；防水砂浆、瓷砖粘结砂浆、填缝剂、柔性防水腻子、加气块粘结砂浆、加气块粉刷抹灰砂浆、地坪砂浆等系列产品。

Based on the study of the assembly of block copolymers in dispersion medium and at the interface of fiber reinforced polymer composites, the micellization in solution of block copolymers and the micelles size were in control.

研究了嵌段共聚物在分散介质及纤维增强聚合物复合材料界面的组装行为，掌握了共聚物胶束的形成条件及胶束尺寸的控制方法。

Our result shows that for block copolymers in nonselective solvents,we can induce the micellization through the hydrogen bonding complexation betweenone of the block and its complementary polymer.

我们的结果表明，嵌段共聚物在非选择性溶剂中，能通过某一嵌段与另外一种高分子之间的氢键作用导致的络合诱导胶束结构的形成。

Objectives: To investigate the effects of adhesion and proliferation of bone mesenchymal stem cells in the surface of lactic acid/glycolic acid/asparagic acid-co-polyethylene glycol PLGA- tri-block polymer scaffolds, try to find a new biomaterial to induce seed cells in vitro for bone tissue engineering.

目的：探讨大鼠骨髓间充质干细胞BMSCs在聚丙交酯/乙交酯/天冬氨酸-聚乙二醇三嵌段多元共聚物 PLGA-表面粘附、增殖的情况，为组织工程学体外诱导种子细胞生长提供新的生物材料。

We prepared a serious of functional polymers with RAFT method.First we synthesize a tri-block polymer.One end is hydrophobic PMMA and the other end is hydrophilic PtAA,the middle is the functional epoxy group,which can be fluorinate by CF_3COOH.

本文运用RAFT方法合成了一系列不同链长比例的三嵌段共聚物：聚—聚—聚(PMMA-b-PGMA-b-PtBMA)，然后利用GMA中含有的环氧官能团，合成含氟的一段，最后将PtBMA一段酸解为亲水段PtAA，即形成了双亲双憎的嵌段共聚物。

The aim of this study was to develop a novel amphiphilic functional block poly(ε-caprolactone) bearing ketone groups MPEG-b-P(OPD-co-CL. 2-oxepane-1, 5-dione was copolymerized with ε-caprolatone in which methoxy poly (MPEG, Mn=5 000) and stannous octoate were used as initiator and catalyst, respectively. The syntheses were conducted by bulk and solution polymerization. 1H NMR results showed that peak position and splitting of the polymers synthesized through solution polymerization were consistent with theoretical data, demonstrating the products were designed block copolymers. While in the bulk polymerization, polymer peak position was changed due to their high reaction temperature, suggesting their structural variation.

将带有羰基官能团的4-羰基己内酯和ε-己内酯分别在甲氧基聚乙二醇(MPEG，Mn=5 000)为引发剂，异辛酸亚锡为催化剂溶液和本体体系中开环聚合，合成了两亲性侧基带有羰基官能团的聚己内酯嵌段共聚物MPEG-b-P(OPD-co-CL.1H NMR结果表明采用溶液聚合法合成的聚合物各峰的峰位置和分裂情况与理论一致，证明了产物是实验所设计的嵌段共聚物，而采用本体聚合法合成的聚合物由于温度的影响，聚合物各峰的峰位置发生了变化，说明其结构发生了变化；差示扫描量热法分析结果表明随着OPD单体含量的增加，聚合物的熔点，玻璃化转变温度和熔融焓增加；热失重测试结果表明OPD单体的引入增加了聚合物的热敏感性。

Instead of the solid polymer or wooden stock, PM / L96 rifle used hollow polymer stock, made from two halves and assembled around aluminium bedding block, that extends through entire stock lenght.

取而代之的是固体聚合物或木制的股票，下午/ L96步枪使用的中空聚合物的股票，由两个半床上用品和周围铝块，通过整个股市的长度延伸组装。

The hydrophobic association thickening behaviors are also remarkably dependent on the number and length of the hydrophobic block in polymer chain, Rheological properties were further studied as a function of polymer concentration, salinity, temperature and shear rate.

这种由分子间的疏水缔合作用而产生的疏水缔合增黏能力与疏水嵌段的数量和长度密切相关。同时进一步研究了聚合物浓度、盐浓度、温度和剪切速率对溶液黏度的影响。

The invention relates to a surface chemistry modified latex which can be obtained by carrying out radical polymerization in emulsion in the presence of at least one ethylenically unsaturated monomer or at least one polymer having ethylinically unsaturated residual bonds, at least one radical polymerization, at least one single, double or triple block polymer which is soluble or dispersible in water, comprising an active group at the end thereof, capable of forming a radical, and chosen from dithioesters, xanthates, thioether-thiones and dithiocarbamates.

本发明涉及具有改良表面化学性质的胶乳，它可以通过在以下物质的存在下进行自由基乳液聚合来获得：至少一种烯属不饱和单体或至少一种含残留烯属不饱和键的聚合物，至少一种自由基聚合引发剂，至少一种水溶性和/或水可分散的单嵌段、二嵌段或三嵌段聚合物，在其端部包括选自二硫酯，硫醚-硫酮，二硫代氨基甲酸酯和黄原酸酯中的能够形成自由基的活性基团。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法，即预先混合聚合物与填料制备复合物，复合物在沥青中会吸收油份而溶胀，改变填料的用量从而调节聚合物与沥青的密度差异的方法，制备出高温贮存稳定的改性沥青，并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响，系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响，研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青，并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用，指出经过预混工艺填料改变了聚合物与沥青的密度差异，以此说明聚合物/填料改性沥青高温贮存稳定的原因；研究了基质沥青和聚合物改性沥青热氧老化过程，并分析了抗氧剂对基质沥青及聚合物改性沥青的影响，探讨了抗氧剂提高沥青耐老化性能的原因。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。