Results 1 to 10 of about 2,910 (96)
Zhejiang Daxue xuebao. Lixue ban, 2009 以五乙酰基葡萄糖和甲基丙烯酸-2-羟基乙酯(HEMA)为原料,以路易斯酸—三氟化硼乙醚络合物(BF3 •Et2O)为催化剂,方便地合成了一种含糖单体—甲基丙烯酸-2-（2',3',4' ,6'-四-O乙酰基-β-D-吡喃葡萄糖氧）乙酯(AcGEMA).该单体与丙烯腈(AN)经自由基溶液聚合的方法进行了共聚.单体和共聚物结构分别经红外、核磁证实.以水接触角测定脱乙酰保护后的含糖共聚物膜表面,结果表明脱乙酰化可显著提高膜表面亲水性.因此,用共聚法对聚丙烯腈膜改性,使其表面引入糖基,可以改善聚合物膜的亲水性 ...
WULi-li(吴莉莉) +2 more
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Gongye shui chuli, 2015 羧酸系阻垢剂具有对水环境无磷污染优势。通过实验对新型聚醚型羧酸系共聚物马来酸酐-烯丙氧基聚乙烯氧基羧酸钠(MA-APEC)、丙烯酸-烯丙氧基聚乙烯氧基羧酸钠(AA-APEC)及羧酸系聚合物水解聚马来酸酐、聚丙烯酸、丙烯酸/丙烯酸羟丙酯的阻磷酸钙垢能力进行了对比研究。实验结果显示, 5种阻垢剂均可使磷酸钙晶体形貌发生改变, 但拥有强亲水性聚乙烯氧基链段的聚合物MA-APEC和AA-APEC具有更优异的阻磷酸钙垢能力。
符嫦娥 +5 more
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Gongye shui chuli, 2002 介绍了国内污水处理及污泥脱水用阳离子聚丙烯酰胺的生产情况及生产技术,罗列了阳离子聚丙烯酰胺的制备方法,如非离子聚丙烯酰胺的曼尼希阳离子化法、二甲基二烯丙基氯化铵 (DMDAAC)和丙烯酰胺 (AM )的共聚法、甲基丙烯酸二甲胺乙酯氯甲烷盐 (或丙烯酸二甲胺乙酯氯甲烷盐 )与丙烯酰胺的共聚法等等。
张元成, 刘树强, 高宝玉
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Gongye shui chuli, 1984 以过氧化苯甲酰为引发剂,甲苯(汽油或石油醚)为溶剂,合成了水溶性马来酸酐-醋酸乙烯酯、马来酸酐-醋酸乙烯酯-丙烯酸甲酯、马来酸酐-醋酸乙烯酯-苯乙烯三种共聚物。通过室内和油田矿化水试验证明,制得的共聚物有良好的阻垢效果,低分子量的马来酸酐-醋酸乙烯酯-丙烯酸甲酯的阻垢效果最好。
郑邦乾, 朱清泉
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Biomass‐based hydrogels are widely regarded as ideal substrates for self‐powered wearable sensors. However, the practical applications of hydrogels are commonly limited by their inherent low strength and toughness, which restrict their capacity to withstand repeated stretching, bending and other mechanical loads arising from human motion in ...
Boyu Du +9 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Infected bone defects represent a dual therapeutic challenge demanding concurrent infection inhibition and osteogenesis promotion. Systemic antibiotic administration is taken as a classical treatment protocol but often yields inadequate local antibiotic concentrations and delayed bone repair.
Xucai Wang +8 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT This study developed a metal–modified fluoroethylene vinyl ether (FEVE) organic coating on 6061 aluminum alloy, supported by a micro‐arc oxidation (MAO) pretreatment layer, to enhance corrosion resistance and antifouling performance in marine environments.
Chang Liu +5 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Biodegradable zinc (Zn)‐based materials are considered promising candidates for orthopedic applications because of their favorable mechanical properties, controllable biodegradability, and good biosafety profiles. However, their clinical translation is limited by early‐stage corrosion‐induced cytotoxicity and inflammation, as well as ...
Jinlong Mao +9 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mechanical dynamic sealing components are usually subjected to the erosion of a hydrothermal environment; thus, the selected service materials must meet stringent requirements for superior self‐lubrication, corrosion resistance, and thermal stability.
Yanchun Zhao +8 more
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Gongye shui chuli, 1998 中原乙烯厂有生产乙烯、聚乙烯、聚丙烯的三套主装置及辅助生产系统，与生产装置配套的循环冷却水系统日循环量４８万ｍ３，循环补水及工艺用水消耗新鲜水量1.5万m3/d。水源主要取自黄河水。
李秀清, 杨宁生
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