R2表示支化或未支化的具有5-17个碳原子的烷基；
R2 represents a branched or unbranched alkyl group with 5 to 17 carbon atoms;
聚合物组合物显示出相对低水平的长链支化和相对高的分子量。
The polymer composition shows relatively low-level long chain branching and relatively high-level molecular weight.
超支化聚合物的玻璃化转变温度随支化点间链段刚性的增大而增大。
The glass transition temperature of hyperbranched polymers rises with the increase of the rigidity of chain segments.
而表面活性剂亲油基的碳链长度和亲油基的支化是影响效率和效能的主要结构因素。
And the length and branching of alkyl chain in the hydrophobic group are main structure factors affecting surfactants' efficiency and effectiveness.
聚合物分子在四氢呋喃稀溶液中的幂指数为0.14，说明该聚合物具有支化结构。
The power index was 0.14, which indicated that the polymer had branched molecular structure in dilute solution of tetrahydrofuran.
所述织物组合物包括烯烃嵌段互聚物或均匀支化的乙烯聚合物或它们的组合的纤维。
Said fabric compositions comprise fibers of olefin block interpolymers or homogeneous branched ethylene polymers or a combination thereof.
随着温度的升高聚乙烯产物支化度和甲基支链含量都迅速增加，长支链含量则显著下降。
Branching degree of the polyethylenes and the content of methyl branch rise quickly with reaction temperature, but the content of long branches drops remarkably.
在催化剂、链支化剂存在下多元酸和多元醇直接熔融酯化、常压缩聚合成饱和羟基聚酯。
A saturated hydroxy polyester resin has been prepared with polycarboxylic acid and polyol at the presence of catalyst and chain transfer agent by the direct melt esterification process.
较低摩尔质量且支化度小的窄摩尔质量分布级分具有较完善、分布更加均匀的薄片晶结构。
The fraction with smaller molecular weight, molecular weight distribution and lower content of short chain branching could form thinner and more uniform laminar crystals.
实验归纳了支化聚甲基苯基硅烷薄膜的光折变规律，获得了控制薄膜厚度和折射率的定量条件。
The quantity conditions of film thickness and refractive index control were acquired. The basic facture technics of branched PMPS waveguide circuit was established.
用可紫外光固化的星形支化丙烯酸酯树脂作主要成膜物，制成了UG1紫外光固化粉末涂料。
An ultraviolet curing powder coating UG 1 was prepared with an ultraviolet curing star grafted acrylate resin as a main film forming material.
差示扫描量热分析结果表明，当相对分子质量相差不大时，支化度较高的聚乙烯具有较低的熔点。
DSC analysis showed that polyethylene with higher branching degree had lower melting point when relative molecular masses of the polymers were approximate.
提出一种新的测试聚氨酯预聚物合成反应过程中氨酯化反应和支化反应的动力学参数的理论模型 。
A theoretical model for the reaction kinetic of the urethane and branching reaction of polyurethane prepolymer is proposed.
支化结构使分散相区域从球状向棒状形式的相变点提前，通过热力学模型分析，对这一现象进行了理论解释。
And the branched structure caused an early transition of the separated domain from the sphere-like to the rod-like, which was interpreted theoretically through a thermodynamic model.
茂金属聚乙烯的分子链长支化结构对其流变特性有重要影响，长支链可以使熔体弹性和剪切变稀效应明显增强。
The molecular long chain branch structure of metallocene polyethylene has great effects on it's rheological behavior, long chain branch can significantly enhance melt elasticity and shear thinning.
相较类似的线性聚合物而言，超支化聚合物在拓扑结构上与树枝状大分子更为相似，只是其支化度相对来说要低一些。
As compared to their linear analogous, hyperbranched polymers have drawn much attention due to their similar topology structures and properties comparing with dendrimers.
高分子链的支化，与另一种共聚物接枝，或共混支化聚合物和线性聚合物是增加其粘度的基本方法，以使其能够发泡。
Branching polymer chains, copolymerizing with another monomer, and blending branched or cross-linked polymers are the basic methods to increase its viscosity so that it can be suitable for foaming.
发现初生聚乙烯粉末具有条状形态结构，其支化度、结晶度及晶粒尺寸均与低压聚乙烯相似，但其熔点和特性粘数较高。
The morphology of nascent polymer powder shows strip structure by scanning electron microscope. Branched content, crystallinity and crystallite size are similar to those of high density polyethylene.
一种组合物，包含具有0至0.1的长链支化指数的第一含氟聚合物和具有至少0.2的长链支化指数的第二含氟聚合物。
A composition comprising a first fluoropolymer having a long chain branching index of from 0 to 0.1 and a second fluoropolymer having a long chain branching index of at least 0.2.
树状高分子是近几年出现的一种新型大分子，因其具有高度支化的结构和独特的单分散特性，故表现出特殊的性质和行为。
Dendrimers are a new kind of macromolecules in the recent years. It has special behavior because of its hyper-branched structure and unique mono-dispersion characteristic.
从一个含有烯基的中心核分子开始，重复进行硅氢化作用和烯基化作用的过程可以获得以硅原子作为支化点的碳硅烷树形分子。
Starting from a core molecule possessing alkenyl groups and repeating the hydrosilylation step and alkenylation step, a carbosilane dendrimer with Si-atoms as branching pointing was obtained.
大多数含茂金属的双组分或多组分催化体系用于制备宽分子量分布聚烯烃，尤其是宽分布聚乙烯，少数用于制备支化或嵌段聚合物。
These catalyst systems are generally used to produce polyolefins having broad molecular weight distributions, especially polyethylene. Some systems are used to produce branched or block polymers.
树枝状大分子是一类具有规则的、高度支化的三维结构的高分子，含硅的树枝状大分子是以硅原子作为两代之间的支化点的树枝状大分子。
Dendrimers are macromolecules with a regular and highly branched three-dimensional architecture. Silicon-based dendrimers are dendrimers with Si-atoms as branching point between two generations.
用稀土催化剂得到的顺-1，4-聚丁二烯具有顺式含量高，支化度小及分子链结构规整性好等特点。 在常温下为非晶态，但在低温下易于结晶，因而具有较高的力学性能。
Cis 1,4-polybutadiene synthesized by rare-earth catalyst has high cis content, high degree of molecular reqularity and low degree of branching.
在实验开始时，在水箱中搅动的是一支参考桨（用于初始化，是一种标准的、平板形、宽度分别为两厘米、六厘米或者是八厘米的桨叶）。
On the first run, the tank was stirred with a reference paddle (initially, a standard, flat shape with a width of two, six or eight centimetres).
他们面对的是一支高度组织化的正规军，利用尖端的通讯系统协同作战。
They are up against a highly organised army, using a sophisticated communication system to coordinate its behaviour.
但是，DB 2支持一种新的SQL特性，这种特性正处在标准化的过程中。
DB2 however supports a new SQL feature which is in the process of being standardized.
他们实际上就是一支非常实验化的乐队，只是由于他们的音乐形式，人们并不认可这点。
They're actually a very experimental band, but because of the form of their music people don't recognize it.
他们实际上就是一支非常实验化的乐队，只是由于他们的音乐形式，人们并不认可这点。
They're actually a very experimental band, but because of the form of their music people don't recognize it.
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