采用一步种子溶胀聚合法制备了颗粒呈单分散的交联聚甲基丙烯酸环氧丙酯树脂 ,对其环氧基的组成比进行了表征 ,并以氨基葡萄糖为配基 ,首次制备了纯化粗品伴刀豆球蛋白 A (Con A ,Ⅲ )的聚合物基质的高效亲合色谱柱。配基在树脂上的...采用一步种子溶胀聚合法制备了颗粒呈单分散的交联聚甲基丙烯酸环氧丙酯树脂 ,对其环氧基的组成比进行了表征 ,并以氨基葡萄糖为配基 ,首次制备了纯化粗品伴刀豆球蛋白 A (Con A ,Ⅲ )的聚合物基质的高效亲合色谱柱。配基在树脂上的键合量为 8.2mg g ,对纯化后的Con A 的吸附量为 13.4mg g。使用该亲合色谱介质成功地从粗品Con A中快速纯化了Con A ,电泳分析显示为一个主要的谱带 ,纯度从 15 %提高到 95 %。展开更多
以自合成的5.0μm单分散大孔亲水交联聚甲基丙烯酸环氧丙酯(PGMA-EDMA)微球为基质,与亚氨基二乙酸键合,合成了亲水性阳离子色谱固定相。用3.5 mmol/L甲烷磺酸作淋洗液,在流速为1.0 m L/min下,对二乙醇胺、Na+、NH4+、K+混合样及有机胺...以自合成的5.0μm单分散大孔亲水交联聚甲基丙烯酸环氧丙酯(PGMA-EDMA)微球为基质,与亚氨基二乙酸键合,合成了亲水性阳离子色谱固定相。用3.5 mmol/L甲烷磺酸作淋洗液,在流速为1.0 m L/min下,对二乙醇胺、Na+、NH4+、K+混合样及有机胺和铵离子混合样进行分离。将其用于黄纸板中阳离子的分离测定,与原子吸收法(AAS)对照,测定结果基本一致。展开更多
This paper studies the structure and properties of the polycarbonate polyurethane epoxy resin (PCPU EP) blends being resistant to hydrolysis.The samples were analyzed by an infrared spectrome...This paper studies the structure and properties of the polycarbonate polyurethane epoxy resin (PCPU EP) blends being resistant to hydrolysis.The samples were analyzed by an infrared spectrometer,a differential scanning calorimeter,a scanning electron microscope and a dynamic viscoelastometer.The results show that PCPU EP blends have excellent resistance to hydrolysis and mechanical properties at the ratio of PCPU to EP equal to 10/100 (wt/wt).展开更多
Hydroxyl-epoxy phosphate (HEP) as a reactive corrosion inhibitor was innovatively synthe- sized by the reaction of bisphenol A epoxy resin with phosphoric acid. HEP was mixed with hydroxyl acrylate resin, and crossl...Hydroxyl-epoxy phosphate (HEP) as a reactive corrosion inhibitor was innovatively synthe- sized by the reaction of bisphenol A epoxy resin with phosphoric acid. HEP was mixed with hydroxyl acrylate resin, and crosslinked with waterborne isocyanate curing agent, which was used to form waterborne HEP/acrylic polyurethane composite (HEP-APU) coatings on Q235 steel surfaces. Electrochemical impedance spectroscopy and polarization curves were applied to analyze the corrosion behavior of the HEP-APU coatings in 3.5wt% NaCl solutions. The results indicated that the HEP-APU coatings show a superior passivation property and efficient corrosion protection of Q235 steel. The waterborne acrylic polyurethane coating containing 0.5wt% HEP exhibited the best corrosion performance among all the coating specimens. The improved flash-rust resistance can be attributed to the introduction of the phosphate group which could form phosphate film on the steel substrate.展开更多
文摘采用一步种子溶胀聚合法制备了颗粒呈单分散的交联聚甲基丙烯酸环氧丙酯树脂 ,对其环氧基的组成比进行了表征 ,并以氨基葡萄糖为配基 ,首次制备了纯化粗品伴刀豆球蛋白 A (Con A ,Ⅲ )的聚合物基质的高效亲合色谱柱。配基在树脂上的键合量为 8.2mg g ,对纯化后的Con A 的吸附量为 13.4mg g。使用该亲合色谱介质成功地从粗品Con A中快速纯化了Con A ,电泳分析显示为一个主要的谱带 ,纯度从 15 %提高到 95 %。
文摘以自合成的5.0μm单分散大孔亲水交联聚甲基丙烯酸环氧丙酯(PGMA-EDMA)微球为基质,与亚氨基二乙酸键合,合成了亲水性阳离子色谱固定相。用3.5 mmol/L甲烷磺酸作淋洗液,在流速为1.0 m L/min下,对二乙醇胺、Na+、NH4+、K+混合样及有机胺和铵离子混合样进行分离。将其用于黄纸板中阳离子的分离测定,与原子吸收法(AAS)对照,测定结果基本一致。
文摘This paper studies the structure and properties of the polycarbonate polyurethane epoxy resin (PCPU EP) blends being resistant to hydrolysis.The samples were analyzed by an infrared spectrometer,a differential scanning calorimeter,a scanning electron microscope and a dynamic viscoelastometer.The results show that PCPU EP blends have excellent resistance to hydrolysis and mechanical properties at the ratio of PCPU to EP equal to 10/100 (wt/wt).
文摘Hydroxyl-epoxy phosphate (HEP) as a reactive corrosion inhibitor was innovatively synthe- sized by the reaction of bisphenol A epoxy resin with phosphoric acid. HEP was mixed with hydroxyl acrylate resin, and crosslinked with waterborne isocyanate curing agent, which was used to form waterborne HEP/acrylic polyurethane composite (HEP-APU) coatings on Q235 steel surfaces. Electrochemical impedance spectroscopy and polarization curves were applied to analyze the corrosion behavior of the HEP-APU coatings in 3.5wt% NaCl solutions. The results indicated that the HEP-APU coatings show a superior passivation property and efficient corrosion protection of Q235 steel. The waterborne acrylic polyurethane coating containing 0.5wt% HEP exhibited the best corrosion performance among all the coating specimens. The improved flash-rust resistance can be attributed to the introduction of the phosphate group which could form phosphate film on the steel substrate.