极性基团

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。

Introducing polar group onto molecular structure of PP via chemical reaction is deemed as a primary means for functionalization of PP.

着重探讨了含极性基团的乙烯基单体种类及用量等因素对PP阻燃性的影响。

The effects of the type and content of vinyl monomer containing polar group on the flame retardance of PP were studied .

在SBS上引入极性基团进行原位改性，可以提高与极性材料的相容性及粘接性能。

The compatibility with polar material and bonding performance of SBS is improved by introducing polar group .

在PP大分子链上接枝含极性基团的乙烯基单体，可显著提高PP的阻燃性能；

The introduction of the vinyl monomer containing polar group into PP macromolecular chain could improve the flame retardance of PP obviously .

生成的亲水极性基团极大地增强了PI薄膜表面的亲水性，从而增大了薄膜表面与铜膜间的粘结强度。

The surface hydrophilicity had been strengthened greatly by the formation of polar hydrophilic groups , and the adhesion strength was increased accordingly .

电子束辐照引入的含氧极性基团改善了HDPE与PA6的相容性，从而提高了e-HDPE／PA6共混体系的力学性能；该体系对甲苯具有一定的阻隔性能。

The compatibility and mechanical properties of e-HDPE / PA6 blend are thus improved .

聚丙烯（PP）综合性能好，用途广泛，但由于分子中不含极性基团而亲水性较差，限制了其应用领域。

Polypropylene ( PP ) have good properties and wide-range applications , Since there are no polar groups on the polymer chain , its applications are limited .

但是，由于PET大分子链结构规整和结晶度较高，且分子中无强极性基团，故其表面亲和性差，这在很大程度上影响了PET纤维的表面亲水性和染色性。

However , due to its high macromolecular chain regularity and crystallinity , its molecule has no strong polar groups , which affect the surface of the hydrophilic fibers .

本文以苯乙烯和丙烯酸酯的低分子共聚物为B段，以含有极性基团的单体为A段合成了A&B嵌段型颜料分散剂。

An A-B blocked pigment-dispersing agent has been synthesised , in which the A block is a monomer with polar groups and the B fo'oek is the oligomer of styrene and acrylate with lower molecular weight .

通过扫描电镜可以准确直观地观察到天津工业大学硕士学位论文UHMWPE纤维表面接枝效果。通过对接枝UHMWPE织物的红外光谱分析，发现其表面引入了许多新的极性基团。

By the FT-IR testing of the grafted UHMWPE fabric , we discovered that some new polar groups were introduced to the surface .

实验表明，采用双螺杆挤出机混炼设备，控制适宜的反应时间、温度和引发剂用量，通过马来酸酐熔融接枝小本体PP引入极性基团，可制备出性能稳定的增容剂。

The result showed that it was feasible to give small bulk PP polar unit in the melt grafting reaction by mixing with twin-screw extruder with appropriate time , temperation and DCP .

FTIR分析表明，改性后的材料化学基团发生变化，引入了含氧极性基团。

SEM picture revealed that treated surface become rough , while FTIR analysis showed that groups of materials were changed in modified chemical with introduction of oxygen-containing polar group .

研究了基体树脂的性质及基体配方中炭黑、结晶成核剂、接枝极性基团的功能化聚丙烯（PP）等对玻璃纤维毡增强PP复合材料力学性能的影响。

The effects of matrix resin and its contained carbon black , nucleator and functionalized polypropylene ( FPP ) on the mechanical properties of glass mat reinforced polypropylene composite were studied in detail .

为扩大高密度聚乙烯（HDPE）的使用范围，提高其着色力和与其它聚合物的相容性，可在HDPE主链上引入极性基团对HDPE进行改性。

In order to expand the application and improve the tinting power and compatibility of HDPE , polar group could be introduced to the main chain of HDPE .

成膜基质也影响涂层结构，在PE基质上和无机玻璃基质上所得涂层的表面元素分布和表面能都不同，在PE基质上所得涂层表面极性基团分布多于在无机玻璃基质上所得涂层。

Substrate may also be a factor which influences surface structure and properties of coatings , surface energy and oxygen atomic concentration are different on surface of the coatings formed on PE and glass substrate .

从基材和粘接剂的表面组成来看，界面含有一些极性基团，可以形成Lewis酸碱和氢键作用，但由于这些基团数量有限，它们形成共价键量子化的条件受到局限；

Analyzed from surface components of substrate and adhesion , there are some active groups between interfaces , which can form hydrogen bonds and Lewis acid - base interactions .

分析了TS、PTS的结构，指出侧链极性基团的运动在其中起重要作用。

TS and PTS structures has been analyzed . Experimental results show that the motion of the polar side group plays an important role in it .

通过方差分析，探讨了含极性基团的乙烯基单体A、B和引发剂DCP的用量以及它们之间的相互作用对阻燃ABS力学性能、阻燃性能的影响。

The effects of contents and their interaction of initiator DCP and vinyl monomers containing polar groups on the mechanical properties and flame-retardant property of flame retardant ABS were investigated by variance analysis .

本文采用γ射线和电子束辐照在聚乙烯主链上引入含氧极性基团，增加了HDPE与无机粒子的界面相容性，通过优选界面增容剂进一步增强了γ-HDPE与白云母的相容性。

Through y-ray and electron beam irradiation , some oxygen containing groups can be introduced onto the molecular chain of HDPE to increase the affinity of HDPE and inorganic fillers .

在LLDPE的大分子上没有极性基团，它与很多基材如金属、塑料、玻璃和低的粘结力很差。

There is no polar radical on the macromolecules of LLDPE . It has poor adhesion to many substrates such as metal , plastics , glass and paper .

目前普遍使用的CNTs纯化方法是氧化法，由此法纯化的CNTs表面存有极性基团。当CNTs作为吸附剂使用时，这些基团会引起不可逆吸附。

However , polar groups on the surface of CNTs , formed during the purification with oxidant , will result in irreversible adsorption of various compounds while CNTs are used as sorbent .

使用X射线光电子能谱（XPS）表征等离子体处理对纤维表面化学组分的影响。经等离子体处理后纤维表面的氧元素含量和含氧极性基团的含量增加。

The surface chemistry of the control and plasma treated carbon fibers were investigated by X-ray photoelectron spectroscopy ( XPS ) and XPS analysis revealed an obvious increase of oxygen content and oxygen containing polar functional groups . 5 .

结果表明，PAN－DCD是侧链带有多种极性基团的聚合物；在酸性条件下溶解度较小，碱性条件下溶解度较大；

The results showed that PAN-DCD is such a kind of polymer with many kinds of polar groups in its side chain and low solubility in acid and high solubility in base .

结果表明：经冷等离子体处理PET纤维表面含氧和氮的极性基团增加、浸润性改善显著，进而使涤纶纤维/环氧复合材料界面剪切强度提高。

The results show that after cold plasma treatment , the increase of oxygen and nitrogen functional groups in the surface improves the surface impregnation of PET fiber and the interfacial shear strength ( IFSS ) property of PET / epoxy composites .

巯基乙酸（TGA）是一种重要的精细化工中间体，由于分子中同时含有羧基和巯基两个极性基团，广泛应用于美容美发、分析、医药、PVC生产等各个领域。

Thioglycolic acid ( TGA ) is an important fine chemical intermediates as it contains both carboxyl and sulfhydryl , it is widely used in beauty salons , analysis , pharmaceutical , PVC production and other fields .

结果表明：纯化后的HA是分子质量较小的部分，水溶性较高，具有羟基、羧基和碳氧键等极性基团；

The results showed that the humic acid was the lighter part of the whole molecule and had high aqueous solubility after purified . The binding sites of HA and heavy metal ions located in the carboxyl and hydroxyl of HA .

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 melting graft reaction between maleic anhydride ( MAH ) and polyethylene wax ( PEW ) was studied , and polar group was added to the chain of PEW successfully .

通过电子束辐照的方法，在高密度聚乙烯（HDPE）分子链上引入含氧极性基团，增加了HDPE分子的极性，改善了HDPE与PA6的界面相容性。

Some oxygen-containing groups ( mainly carbonyl group ) were introduced onto the molecular chains of HDPE through electron beam irradiation , the polarity of HDPE was increased and the compatibility between HDPE and PA6 was thus improved .

结果表明，PA降凝剂的侧链上只有远离极性基团的碳原子能够参与结晶。

Results showed that only carbon atoms located far from the polar groups of PA pour point depressants participated in crystallization , and those carbon number of alkyl side chains about three fourth the average carbon number of the wax in crudes , i.

由于ARTON具有极性基团，所以显示出独特的优越性能和良好的应用前景。

Because ARTON had polar functional group , it showed great advantages and bright application future .