cross-linking density

Small amount of modifier could increase the cross-linking density , and enhance the mechanical property of the polymer in the same time .

分析了改性剂含量对材料力学性能的影响，认为少量改性剂的加入使聚合物的交联密度增加，强度增强。

On the other hand , with the decline of cross-linking density , the freedom of the molecular chain movement makes better crystallization ability .

但另一方面，交联密度的下降使分子链获得更好的自由运动能力，有助于材料在受热及拉伸过程中的结晶。

The core material released very slowly from the microcapsule in ethyl alcohol as the melamine formaldehyde had large cross-linking density .

由于蜜胺树脂有大的交联密度，微胶囊在乙醇中渗透缓慢，证明芯材包覆效果好，同时发现双层壁材微胶囊的致密性优于单层壁材的微胶囊；

Thus , it is easy to control the release rate of drug from the hydrogels by choosing appropriate cross-linking density and concentration of DTT .

因此，我们可以通过选择合适的交联密度和还原剂DTT的浓度来控制凝胶的药物释放速率。

In the material with relatively low cross-linking density , extensive fracture process stripe is formed which is induced by the combined stress field near the rubber particles .

在交联密度较低的材料中，在橡胶颗粒附近叠加的应力场诱发下发生纵深度较大的断裂过程。

The effective cross-linking density (υ __e ) and the molecular mass between crosslinking points ( M_c ) were calculated .

理论计算了两种凝胶的有效交联密度（eυ）和网链分子量（Mc）。

The results shows that epoxy resins containing rigid rod structure or many epoxy groups have a high glass transition temperature ( Tg ) because of high cross-linking density .

研究结果表明：分子结构中含有刚性结构或连有较多的环氧基时，固化产物具有较高的交联密度，玻璃化转变温度较高；

However , the high benzoxazine resin curing temperature , low cross-linking density of the cured product , brittle and other defects restrict its application in some special fields .

但是，苯并恶嗪树脂固化温度偏高、固化产物交联密度偏低、性脆等缺陷制约了其在一些特殊领域的应用。

Compared with other template , especially organic templates , the types of functional groups , the size , the composition , and even cross-linking density of microgels are easily controlled .

与其他有机模板相比较，微凝胶的组成成分，特别是其中所含官能团的类型、微凝胶大小、交联密度等都可以通过选择单体、调节反应条件等加以控制。

The shear modulus and the effective cross-linking density increased with the increase of r. The applications of poly ( NIPA-co-GMA-Dex ) hydrogels in bioseparation have been investigated .

发现P（NIPA一co一GMA一Dex）凝胶具有较好的力学性能，其剪切模量和有效交联密度均随着r的增加而增大。

In order to prepare three dimensional skeletal polymer ( 3D monolithic polymer template ) with low cross-linking density and high hydrophilicity Bisphenol A epoxy was cured with diethylenetriamine in the PEG1000 / PEG2000 mixing medium .

双酚A型环氧树脂和二亚乙基三胺在PEG1000/PEG2000介质中固化反应，制得带有低交联密度和高亲水性的三维骨架聚合物（三维整体型聚合物模板）。

The vulcanizates have excellent mechanical properties and tear strength , less compression set and higher cross-linking density . ( 4 ) DRP / NBR foam materials were prepared by the new foaming agent MSH-500 and rubber power modified by the mechanical force chemical method .

本文通过机械力化学方法制备的改性胶粉/天然橡胶硫化胶有优良的物理机械性能、撕裂强度提高，有较小的压缩永久变形和较大的交联密度。

So by the cooperating effect of sulfur and other curing agent , the systems may carry out double curing and consequently it can enhance the cross-linking density , improve the thermal resistance and quicken the curing reactions and lay a stability foundation on the deep theory research .

因此，通过硫磺与其它固化剂的复配，使之进行双固化反应，从而可以达到提高交联密度，改善固化物耐热性及加快固化反应的目的，为该种环氧树脂的进一步应用奠定了理论基础。

The protection mechanism of rubber protecting waxes was described . The enviromental temperature of rubber products , wax composition , cross-linking density of vulcanizate , internal migration of waxes , compounding ingredients of compound , wax concentration were direct influence factors of wax protection effect .

结合橡胶防护蜡的作用机理说明橡胶制品环境温度、石蜡化学组成、硫化胶交联度、石蜡内部迁移、胶料配合剂和石蜡浓度是直接影响防护蜡性能的因素。