丙烯酸

Acrylic acid that the cardinal plane reinforces a tier is that rolling direct cement sharpening agent (SRA-01) Tu follows the evidence air temperature on surface, but adds appropriate amount addition Shimizu commixture dilution with acrylic acid in clean base of drying.

丙烯酸基面加强层是用丙烯酸水泥加强剂（ SRA-01）直接滚涂于干燥洁净的基面上，跟据气温可加适量添加清水混合稀释。

It is extremely difficult to solve the problem of tunnel leak, because there are many muddiness, greasy dirts and slushes on the top of the tunnel, thereby it is hard to conglutinate the waterproof materials. Test results show that the impervious pressure and the splice strength of the acrylic acid waterproof material will be up to 1.2 MPa and 1.8 MPa in 30 min with new formula and unique construction craft 50 that reduce the difficulty of conglutination.

实验结果表明：使用新型丙烯酸防水材料配方和施工工艺，使丙烯酸防水材料的抗渗压和粘结强度在30 min里能够迅速分别达到1.2 MPa和1.8 MPa，从而降低粘结难度，很好地解决了既有隧道的顶部因有很多的淤泥、油污、水垢等杂物而使普通防水材料难以粘结的问题。

When Ri increases, the effort in the molecular will increase, and molecular in the emulsion will crimple in group, the distribution of molecular weight in emulsion will widen and distribution degree increase.

利用预聚体封端接枝技术合成了具有优异贮存稳定性和耐水性的丙烯酸酯改性聚氨酯水分散体与丙烯酸酯-有机硅氧烷复合改性聚氨酯水分散体。

Molecularly imprinted polymer using quercetin as template molecules, methacrylic acid as functional monomers, ethylene glycol dimethacrylate as crosslinking agent were prepared, and the binding sites of MIP were selectively modified with diazomethane.The effects of template molecule concentration, solvent and diazomethane usage on modification were discussed.

以槲皮素为模板分子，甲基丙烯酸为功能单体，乙二醇二甲基丙烯酸酯为交联剂，制备了分子印迹聚合物，并以重氮甲烷为修饰剂，对MIP的结合点进行了选择性修饰，探讨了模板分子浓度、溶剂及重氮甲烷用量等对修饰效果的影响。

A new type of difunctional initiator (benzyl dibromide, ethyl dibromoacetate) was proposed in this paper and used to synthesize poly based triblock copolymers such as PSt-PBA-PSt, PMMA-PBA-PMMA.

本论文提出一种新型ATRP双官能团引发剂(如α，α-二溴化苄、α，α-二溴乙酸乙酯)，并用聚合反应速度法、GPC法、核磁分析法进行双官能度的验证，并通过两步聚合合成以聚丙烯酸酯为中间嵌段、苯乙烯或甲基丙烯酸甲酯为两端嵌段的ABA型三嵌段共聚物。

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先将大分子二元醇与二端羟丁基聚二甲基硅氧烷的混合液脱水后加入二异氰酸酯，反应后加入二羟甲基丙酸、二元醇扩链剂和催化剂二月桂酸二丁基锡，并用丙烯酸酯进行稀释，反应后降温乳化，用多元胺扩链剂在水中进行扩链反应，得到含有丙烯酸酯单体的硅氧烷改性聚氨酯分散体，然后再通过加入引发剂过硫酸钾进行乳液聚合。

Isocyanate was modified with emulgent DMPA,and then reacted with hydroxyl acrylic resin forming waterborne two-component acrylic polyurethane coatings.

用内乳化剂二羟甲基丙酸对异氰酸酯进行改性，然后将其与丙烯酸酯多元醇反应制备了水性双组分丙烯酸酯聚氨酯涂料。

The effect of cationic comonomer methacryloyloxy ethyl trimethylammonium chloride on the rate of polymerization,the dissolvability of polymer in THF,the stability and pH value of methyl methacrylate/butyl acrylate/DMC soap-free emulsion were studied systematically.

研究了阳离子型共聚单体甲基丙烯酰氧乙基三甲基氯化铵的用量对甲基丙烯酸甲酯/丙烯酸丁酯/DMC 无皂乳液聚合速率、聚合物在THF中的溶解性、乳液稳定性及pH值的影响。

Chemical Engineering Institute, Qingdao University, Qingdao 266071, ChinaAbstract: The compatibility and process property of PVC/HDPE blends were studied on the basis of using vinyl chloride/ethyl acrylate copolymer as a compatibilizer, thus polyvinylchloride/(vinyl chloride/ethyl acrylate)/, ie.

以氯乙烯-丙烯酸乙酯共聚物作为聚氯乙烯和高密度聚乙烯的增容剂，研究了共混物的相容性和加工性能，在此基础上研制了聚氯乙烯/氯乙烯-丙烯酸乙酯共聚物/高密度聚乙烯合金，进而研究了合金的力学性能。

TDI-based polyurethane has degraded to a quinone-imine under UV-irradiation, which leads to the phenomena of etiolation.

结论对用于文物保护的丙烯酸类涂料和聚氨酯类涂料，丙烯酸类的涂料性能更优异。

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。