查询词典 PVC

By the testing means of electron-spectroscopy for chemical analysis , thermogravimetric analysis , differential scanning calorimetry , transmission electronmicroscopy , the results have shown that the emulsion polymerization in situ in the presence of nano-particle of calcium carbonate can happen smoothly and successfully and the surface of nano-particle of calcium carbonate have been capsulated by polymer of acrylates, which prevent from the agglomerating of nano-particles of calcium carbonate. Because the copolymer of acrylate has good compatibility with some plastics such as PVC, ABS, AS and so on, so the dispersion of nano-scale calcium carbonate as nanometer size in these plastics can be reached more easily and the effects of nanometer can happen.

通过X射线光电子能谱、热失重分析、动态扫描量热分析、透射电子显微镜等手段，证实在纳米碳酸钙原生粒子存在下，可以进行丙烯酸酯类的原位乳液聚合，乳液聚合顺利，纳米碳酸钙表面被丙烯酸酯类聚合物所包覆，使纳米碳酸钙粒子间的团聚不易发生，同时由于丙烯酸酯类聚合物与PVC、ABS、AS等极性聚合物具有较好的相容性，从而使纳米碳酸钙在聚合物基体中能达到纳米状态分散，从而发挥纳米效应。

Through the comprehensive analysis of operation and the external performance of flex break and chapping of the buna-N apron,considering the problems occurring in the operation,conclusion is made that on-going modification of the system of the buna-N and PVC is an important access to the improvement of quality and service life of buna-N apron.

通过对丁腈胶圈的运行状态、屈挠断裂、龟裂的表象特征等的详细分析，结合实际使用中出现的问题，说明丁腈橡胶和PVC并用体系的不断改型是提高丁腈胶圈质量，延长使用寿命的重要途径。

Include PVC market weekly report, Caustic soda weekly report, Carbide calcium weekly report, Soda ash weekly report, Industry salt weekly report, and monthly report related with chlor alkali products.

内容以PVC市场周刊、烧碱市场周刊、电石市场周刊、纯碱市场周刊、原盐市场周刊以及各主要氯碱产品月刊的形式体现。

When heated , PVC may lose hydrogen chloride and form a chromophoric conjugated polyene structure.

当受热时，PVC可能失去氯化氢并形成一种有色的共轭聚烯结构。

At present, the development of customer-oriented PVC fence rapid design and price evaluate system is in preliminary stage at home, the general idea, method and experience put forward in the thesis have some reference for the rapid design of congeneric product and some guidance for popularization and appliance of other products.

目前，面向用户的PVC护栏产品的快速设计和价格评估系统的开发在国内外还处于起步阶段，本文所提出的一些通用的思想、方法和经验能为同类产品的结构快速设计制造所借鉴，对其他产品的推广应用也具有一定的指导作用。

Softened monomer is adopted to copolymerize with VC to overcome deficiencies of blending modification,and it has gradually become important pathways and hotspot of toughening modification of PVC.

采用软单体与氯乙烯共聚可以克服共混改性的不足，已成为PVC增韧改性的重要途径和研究热点。

The changeable regularity and adaptation in different stages of photosynthetic rate, stoma conductance and intercellular CO2 concentration of Cynanchum komarovii that was planted in PVC tube were studied under water stress.

采用PVC管种植模拟土壤干旱的方法，研究了牛心朴子在水分胁迫下光合速率、气孔导度、胞间CO2浓度、叶绿素荧光的变化规律及不同生育期适应性表现。

Through changing centrifuge feed- tubes to casing- pipe type feed- lines and slurry pump with direct feeding, the centrifuge current is stabilized, the lines blocking by PVC resin is avoided, and the goal of increasing dehydrant capacity of centrifuge is attained.

通过对离心机进料管线的改进，采用套管式进料管线，浆料泵直接进料的方式，稳定了离心机的电流，防止PVC树脂堵塞管线，达到增强离心机脱水能力的目的。

S The blending of PVC with NBR powder prepared by crosslinking encrustment technique was carried out to study the effect of the properties and the content of PNBR on the blend impact strength.

用交联包覆法制备的粉末丁腈橡胶与PVC 共混。

PVC pipe,mult-cavity pipe,foaming pipe, enwind pipe

PVC管材，一模多腔管材，发泡管、缠绕管等

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。