查询词典 styrene

Methods:54 workers exposed to styrene were selected as exposure group,25 workers unexposed as control group were similar like workers exposed styrene in age and sex.

选择接触苯乙烯工人54人为接触组，选择年龄、性别构成与接触组相似的不接触遗传毒物的工人25人为对照组。

Unsaturated polyester crosslinked by styrene has poor toughness. In this paper, diallyl phthalate was used as co-crosslinking agent with styrene for toughening UP.

针对苯乙烯固化的不饱和聚酯韧性差的问题，研究采用了适用于高温固化的邻苯二甲酸二烯丙酯作为不饱和聚酯的共交联剂。

After the oxidative polymerization of DMP,styrene was in-situ polymerized under the initiation of dibenzoyl peroxide and dicumyl peroxide,finally thermodynamically compatible PPO/PS alloy was prepared.When styrene content was 50 wt%,for the synthesized PPO/PS alloy the yield and the weight-average molecular weight were determined to be 95%and 1.7×10~5 for PPO,93%and 2.0×10~5 for PS,respectively.The influence of the concentration of DMP and catalyst,molar ratio of N/Cu, oxygen partial pressure,NaOH concentration and temperature on the initial polymerization rate(R_0) of DMP was studied.It was found that the initial polymerization rate of DMP increased with the concentration of DMP and catalyst. The initial polymerization rate increased with the molar ratio of N/Cu at first and then decreased.

通过测定DMP氧化聚合过程中氧气吸收量随时间的变化，研究了DMP和催化剂浓度、N/Cu摩尔比、氧气分压、氢氧化钠浓度及温度对水介质中DMP氧化聚合初始速率的影响，发现DMP氧化聚合初始速率与氧气分压的0.1次方成正比；DMP氧化聚合初始速率随DMP和催化剂浓度及温度的增加而增加；随氢氧化钠浓度和N/Cu摩尔比的增加DMP氧化聚合初始速率先增加后降低。

Bisphenol A dicyanate ester resin ; styrene ; divinyl styrene ; RTM

双酚A型氰酸酯；苯乙烯；二乙烯基苯； RTM

Firstly, partial sulfonated polystyrene were prepared by solution polymerization with the raw materials of styrene, sodium styrene sulfonate and divinyl benzene; Secondly, the SPS/OMMT nanocomposites were prepared by intercalation polymerization with the monmers and organically modified montmorillonite.

首先，利用NMP为溶剂，BPO引发苯乙烯、苯乙烯磺酸钠、二乙烯基苯溶液共聚；同时，采用高分子的单体与有机蒙脱土插层聚合制备了磺化聚苯乙烯阳离子树脂／蒙脱土复合材料。

The styrene-acrylic emulsion was synthesized using monomer styrene,butyl acrylate,2-hydroxy propylacrylate and monobutyl itaconate.

采用苯乙烯、丙烯酸丁酯及丙烯酸-2-羟基丙酯作主单体，衣康酸单丁酯作功能单体合成了苯丙乳液，比较了功能单体MB I及丙烯酸对苯丙乳液性能(包括耐水性、表面张力、钙离子稳定性等)的影响，用透射电镜观察了乳胶粒子形态。

A series of acrylamide-styrene copolymer latices with different acrylamide and styrene weight ratio were prepared from the polymerization in emulsifier-free aquesous media .

为了在水介质中获得高固含量的聚丙烯酰胺，通过无皂乳液聚合制备了一系列不同单体比例的丙烯酰胺-苯乙烯的共聚物胶乳，固含量达50％，稳定性好，胶乳粒子大小均一，具有一定的触变性。

The experiment results show that the yield of hexane catalyzed by the nano-fibrous catalyst was 4.7 times higher than that of PdCl_2/γ-Al_2O_3 catalyst. The hydrogenation ofα-tetradecylene, cyclohexene, nitrobenzol and styrene by the nano-fibrous catalyst was also studied, the selectivity to primary products of the hydrogenation of cyclohexene, nitrobenzol and styrene was 100%.

苯乙烯-丙烯腈共聚物负载纳米钯超细纤维形态催化剂在常温，氢气压力101.3Pa下催化α-己烯加氢时表现出很高的活性，催化剂PSAN-Pd10催化氢化α-己烯选择生成正己烷的产率在150 min就达到87%以上，与无机物负载的催化剂相比，加氢效果有显著提高，并且催化剂的重复使用性较好。

Montmorillonite/styrene–butadiene–styrene modified bitumen composites were prepared by melt blending with different contents of Sodium montmorillonite and organophilic montmorillonite.

因此，提高SBS改性沥青的耐老化性对于延长沥青路面的使用寿命具有重要的意义。

Polystyrene-MMT nanocomposites were prepared by free radical polymerization of styrene containing dispersed clay. The organophilic MMT particles were easily dispersed and swollen in styrene monomer.

采用双－苯基二甲基十八烷基溴化铵作为有机插层剂对钠基蒙脱土进行了有机化处理，该有机化的蒙脱土粒子在苯乙烯单体中很容易地均匀分散并形成稳定的胶体溶液。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。