羧聚乙烯 的英文怎麼說
中文拼音 [suōjùyǐxī]
羧聚乙烯
英文
carboxypolymethylene-
Carboxylated polystyrene resin
羧化聚苯乙烯樹脂The synthesis technology of various liquid rubbers with different active group terminated, such as hydroxyl - terminated, carboxyl - terminated, isocyanate - terminated, ami - no - terminated, mercaptan - terminated and various main chains like polybutadiene, polyurethane, polystyrene were reviewed with 23 references
摘要綜述了端羥基、端羧基、端異氰酸酯基、端氨基、端巰基等活性端基，以及聚丁二烯、聚氨酯、聚苯乙烯等不同主鏈結構的液體橡膠的合成技術。The dispersity and stability of the graphite aqueous suspensions was investigated with centrifugation, the violet visible spectrophotometer, the laser particle size analyzer and scanning electron microscopy ( sem ). the following aspects of the production technique were carefully studied : 1. the effects of surfactants, poly ( vinyl alcohol ) ( pva ), poly ( vinyl pyrrolidone ) ( pvp ), sodium alginate ( sa - na ) and poly ( sodium acrylate ) ( pa - na ) on the suspension stability of graphite were investigated
本研究的主要內容有以下三個方面: 1 、研究了陰離子表面活性劑、非離子表面活性劑、聚乙烯醇（ pva ） 、聚乙烯基吡咯烷酮（ pvp ） 、海藻酸鈉（ sa - na ） 、聚丙烯酸鈉（ pa - na ）對石墨在水中分散性和穩定性的影響; 2 、研究了分散方法、分散介質、 ph值及羧甲基纖維素鈉（ cmc ）含量對石墨在水中分散性和穩定性的影響; 3 、研究了聚乙烯醇（ pva ） 、聚乙烯基吡咯烷酮（ pvp ） 、海藻酸鈉（ sa - na ） 、聚丙烯酸鈉（ pa - na ）四種助分散劑與羧甲基纖維素鈉（ cmc ）復配對石墨在水中分散性和穩定性的影響。In this paper, a new class of concrete high performance water reducer ( hpwr ) was designed from chemical classification of high performance wra, working principle and unit structure model of poly - carboxylate series wra. the comb - like copolymer structure of hpwr was " carboxylic group - ether link - ester link ". the synthetic chemical materials was polyethylene glycil, acrylic acid and methyl - metacrylic acid ester
本文從高性能減水劑的化學結構、作用機理以及聚羧酸類減水劑的單元結構模型出發，設計出國內所沒有的一類新型高性能減水劑? ? 「羧酸?醚鍵?酯鍵」為單元結構模型的梳型分子結構的減水劑共聚物，並確定了以聚乙二醇（ peg ）系列、丙烯酸（ aa ） 、甲基丙烯酸甲酯（ mma ）為合成該類減水劑的主要化學原料。In this study, it has been put forward that taking reactive nanometer magnetic fe304 particles as magnetic nucleus, and the copolymer of styrene ( st ) ? crylic acid ( aa ) as macromolecular shell, we could synthesize, magnetic polymer composite microspheres containing carboxyl groups on their surface, then microspheres are activated by thionylchloride, the surface of such magnetic composite microspheres thus produced had reactive acid chloride groups which then react with the free amino groups of the free soluble enzymes to give peptide bonds ( ? o ? h ?,
本研究首次提出了以納米級磁性fe _ 3o _ 4粒子為核心，苯乙烯（ st ） ?丙烯酸（ aa ）共聚物為高分子殼層，合成了表面帶羧基的磁性高分子復合微球，然後將這種微球用二氯亞碸進行活化處理，在其表面形成了反應性酰氯基團，該基團可以與游離酶的氨基形成肽鍵，從而將游離酶固定化。2 with dispersion - polymerization, taking above reactive nanometer magnetic fe304particles as nucleus, and the copolymer of styrene ( st ) ? crylic acid ( aa ) as macromolecular shell, we could synthesize, magnetic polymer composite microspheres containing carboxyl groups on their surface
2採用分散聚合法，以上述反應型納米磁性fe _ 3o _ 4粒子為核心，苯乙烯（ st ） ?丙烯酸（ aa ）共聚物為高分子殼層，合成了表面帶羧基的磁性高分子復合微球。Peg and superfluous aa reaction by complete concatenation method, the esterify production " esterify water " and acid number were mensurated, it shows that the esterify reaction would be processed under 100 esterify temperature and with amine accelerantthe tide of esterify reaction was substantiated by ir. in the ir spectrum, the characteristic peak of hydroxy of peg and carboxyl of aa were weakened. and the ester link of peg was reinforce. the " esterify water " was increased gradually and the acid number of esterify production was debased gradually along with the extent of esterify time and the augmentation of molecular weight of peg
通過聚乙二醇與過量的丙烯酸採用全連續法進行反應，測定酯化產物「酯化水」和酸值等宏觀手段反映出在胺類促進劑、 100的酯化溫度等條件下的酯化進程，而利用紅外光譜（ ir ）分析所反映的聚乙二醇的羥基和丙烯酸的羧基特徵峰減弱，而pea的酯基特徵峰加強等特徵進一步證實了宏觀手段所表現出來的酯化趨勢：隨著酯化時間的延長和聚乙二醇分子量的增大，產生的「酯化水」逐漸增加，酯化產物的酸值逐漸降低；從酯化時間看，當反應時間達到300min時，酯化物的酸值達到最小，而從ir分析來看，酯化物pea4的羥基峰在300min時減弱到最小， pea23在120min時羥基峰的表現出酯化基本完全。Team a is made of carboxyl styrene, crylic acid assemble matter ; team b is made of silicate cement, quality quarts grit and special active chemical matter
組分是由羧基苯乙烯、丙烯酸共聚物等組成； b組份是由硅酸鹽水泥、精選的石英砂及特種活性化學物質等組成。The influence of retarder on the seaing time and ultimate strength of gypsum plaster was investigated in this paper. the experimental results indicate that the effect of single retarder, such as citric acid, is inferior to that of composite retarder which was made of blending citric acid with a few portland cement ( about 0. 5 ?, by weight ). the effect of different water - retention agents, such as polyvinyl alcohol ( pva ), carboxymethyl cellulose ( cmc ), and na - bentonite, etc., was also studied, and the results demonstrate that by means of adding organic and inorganic water - retention agent simultaneously the water - retention of plastering slurry can obviously be improved. the optimal mix proportion of gypsum plaster suitable to finish coat of walls and ceilings of buildings has been got by use of factorial experiment with orthogonal array accounting for interactions between factors each other
研究了分別以檸檬酸、檸檬酸與普通硅酸鹽水泥復合物作緩凝劑，調節粉刷石膏的凝結時間，並對比2種緩凝體系對石膏抗折、抗壓強度的影響.比較不同保水劑（聚乙烯醇、羧甲基纖維素）以及相同量的保水劑在不同工藝流程下保水效果上的區別.探索了有機保水劑和無機保水劑對粉刷石膏的保水性的影響.結果表明，檸檬酸與普通硅酸鹽水泥的復合緩凝劑比單純的檸檬酸更能有效地延緩建築石膏的凝結，同時建築石膏的抗折、抗壓強度降低幅度減小分享友人