四官能环氧树脂的合成以及在覆铜板中的应用

对四官能环氧树脂[1,1,2,2-四(对羟基苯基)乙烷四缩水甘油醚]的合成与改性及在覆铜板中的应用作了初步探讨,并对其屏蔽紫外线与产生荧光的机理作用作了简单阐述。     

氯醚树脂与氯化橡胶的比较

将氯醚树脂和氯化橡胶分别作为基料制成底漆、中涂、面漆,从性能上进行比较,得出氯醚树脂与氯化橡胶无明显优劣之分.从环保角度来看,氯醚树脂完全可以取代氯化橡胶.     

Chromatographic performance of monodisperse–macroporous particles produced by “modified seeded polymerization.” I: Effect of monomer/seed latex ratio

In this study, the monodisperse–macroporous particles produced by a relatively new polymerization protocol, the so‐called, “modified seeded polymerization,” were used as column‐packing material in the reversed phase chromatography (RPC) of proteins. The particles were synthesized in the form of styrene‐divinylbenzene copolymer approximately 7.5 μm in size. In the first stage of the synthesis, the monodisperse polystyrene particles 4.4 μm in size were obtained by dispersion polymerization and used as the “seed latex.” The seed particles were swollen by a low‐molecular‐weight organic agent and then by a monomer mixture. The monodisperse–macroporous particles were obtained by the polymerization of monomer mixture in the seed particles. In the proposed polymerization protocol, the number of successive swelling stages was reduced with respect to the present techniques by the use of sufficiently large particles with an appropriate average molecular weight as the seed latex. A series of particles with different porosity properties was obtained by varying the monomer/seed latex ratio. The separation behavior of HPLC columns including the produced particles as packing material was investigated in the RPC mode using a protein mixture including albumin, lysozyme, cytochrome c, and ribonuclease A. The chromatograms were obtained with different flow rates under an acetonitrile–water gradient. The theoretical plate number increased and chromatograms with higher resolutions were obtained with the particles produced by using a lower monomer/seed latex ratio. The separation ability of the column could be protected over a wide range of flow rates (i.e., 0.5–3 mL/min) with most of the materials tested. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 607–618, 2004     

硫酸铀酰印迹离子交换树脂的合成及识别特性研究

为进行稀溶液中铀的浓缩,以硫酸铀酰为模板、二乙基烯丙基胺为功能单体,在水中采用自组装分子印迹技术制备了硫酸铀酰印迹离子交换树脂.对树脂合成条件进行了优化,研究了pH值对吸附量的影响、分子印迹聚合物MIPs-4的等温吸附与吸附动力学、柱内吸附与淋洗曲线等树脂识别性能.结果表明:印迹树脂对硫酸铀酰的吸附性能比非印迹树脂好,可以在pH=1～6范围内应用,并在pH为2左右时吸附能力最强.MIPs-4树脂的吸附等温线为"优吸"型,吸附在约3h达到平衡.当C0=0.125mg·mL-1时,Kd=0.249L·g-1.吸附液ρ(U)=1.0 mg·mL-1、接触时间4min进行的柱内试验得出MIPs-4的穿透体积、穿透容量和饱和容量分别为柱内树脂的床体积(BV)的22倍、21.6 mg·mL-1和36.2 mg·mL-1.以0.05 mol·L-1 H2SO4 1.0 mol·L-1 NaCl为淋洗液时,淋洗体积仅4BV,流出液中最大铀浓度达到17.6 mg·mL-1.印迹树脂的吸附和解吸性能好,可应用于低浓度铀的浓缩及含铀废水的处理.     

Ambient‐cured polyesteramide‐based anticorrosive coatings from linseed oil—A sustainable resource

Ambient‐cured polyesteramide (APEA) coating resin synthesized from dihydroxy fatty amide obtained from linseed oil, a sustainable resource, and poly(styrene‐co‐maleic anhydride), a bifunctional acid component, was found to exhibit improved physicomechanical and anticorrosive properties. The structural elucidation of APEA resin has been carried out by FTIR, ¹H‐NMR, and ¹³C‐NMR spectroscopies. The physicomechanical and chemical resistance properties were investigated by standard methods. The corrosion resistance performance was evaluated in acid, alkali, and organic solvent. The thermal behavior was studied by TGA technique. A comparative study of these properties of APEA with reported baked polyesteramide (PEA) coatings was carried out. A remarkable improvement in the drying property of APEA was observed. The APEA coatings also showed improved physicomechanical and anticorrosive properties as compared to the baked PEA coatings. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1818–1824, 2005     

快速法测定AES中未硫酸化物的含量

讨论了一种快速测量AES中未硫酸化物的方法。首先将配制好的AES-乙醇溶液，通过离子交换树脂，然后收集、蒸馏、干燥得到的液体，称重后即可得到未硫酸化物的含量，采用该方法比国家标准节约2．5～3h的分析时间。     

901快速强力胶的研制

详细论述了一种新型改性SBS溶剂型胶粘剂的配方设计、制备工艺、基本性能等有关问题。     

双组分高固体丙烯酸聚氨酯涂料的研究

介绍了改性高固体分羟基丙烯酸树脂的合成工艺，通过对引发剂、链转移剂、反应温度及叔碳酸缩水时油酯等因素的讨论，合成了新型的羟基丙烯酸树脂。以其为基料配制了丙烯酸聚氨酯涂料，并讨论了该磁漆的配方设计和各项性能。     

含三嗪环的酸酐固化剂合成及其环氧固化物性能研究

将桐油(TO)经过三(2-羟乙基)异氰尿酸酯(THEIC)改性处理后再引入顺丁烯二酸酐(MA),得到新型含有三嗪环的酸酐固化剂(TTA)。通过红外光谱分析确定了其结构,用TGA分析结果表明,其与E44环氧树脂的固化物耐热指数达到174.5℃,在空气气氛中的热老化性能优于用THEIC和双马来酰亚胺改性的桐油酸酐固化剂的环氧固化物。     

高性能环氧树脂涂料的研制

以甲基丙烯酸、丙烯酸丁酯及苯乙烯的聚合为接枝体，在过氧化苯甲酰作用下对E-51环氧树脂进行接枝改性，同时对三乙烯四胺进行曼尼希改性，制得多种改性固化剂，并用其与改性的环氧树脂配制成涂料，实验结果表明，当苯酚、甲醛和三乙烯四胺的物质的量比为3：3：1时固化剂的固化性能最好。