无机粉体改性塑料环境友好材料的环境协调性研究

从环境友好材料的角度系统研究无机粉体改性塑料环境友好材料的综合性能,论证了无机粉体改性塑料环境友好材料是一类经济性、功能性和环境协调性有机统一的材料,探讨了"可环境消纳助剂"可强化无机粉体改性塑料的环境消纳特性;重点介绍了无机粉体的筛选原则及环境协调性,总结了无机粉体改性塑料环境友好材料仍然存在的缺陷及今后的对策,强调要加快推进提高这一新型改性塑料材料产业化的技术水平;明确了"光钙型多功能环境友好塑料"是狭义上的无机粉体改性塑料环境友好塑料,该技术产品已成为治理塑料"白色污染"的主流产品之一;提出今后"开发性价比高"的无机粉体改性塑料和"具有可环境消纳特性"的"光钙型多功能环境友好塑料"将作为无机粉体改性塑料环境友好材料发展重点的观点。     

纳米SiO_2改性外墙涂料的研究

介绍了纳米材料改性高性能建筑外墙涂料的配方及研制,着重讨论了纳米SiO2添加量对涂料性能的影响:掺入4%的纳米SiO2能明显改善涂膜的附着力、光泽度、耐水、耐碱、耐洗刷性和涂料的抗沾污性、触变性能、稳定性。     

蒸馏妥尔油改性酚醛树脂的合成与应用

利用造纸厂纸浆废液中分离出的蒸馏妥尔油,合成了改性酚醛树脂,并对反应机理和树脂结构进行了分析。结果表明,当苯酚与甲醛的摩尔比控制为1∶0.6~0.9,蒸馏妥尔油加入量为苯酚的40%~60%时,改性的酚醛树脂性能最佳,与聚合物和溶剂的混溶性得到提高。     

有机硅丙烯酸乳液的研制

以丙烯酸酯和有机硅官能单体为原料,合成了有机硅丙烯酸乳液。介绍了乳液及由其制备的涂料的性能。讨论了影响乳液性能的因素。     

高含水率杨木单板室温胶合的脲醛树脂胶研究

在实验室条件下 ,以传统脲醛树脂胶的生产工艺为基础 ,加用氨基取代羧酸类化合物。新配方制得脲醛树脂胶 ,用DSC分析了树脂固化反应热过程 ,对含水率在 12 % -2 0 %杨木单板进行了室温胶合研究     

表面改性活性炭对饮用水中THMs吸附性能研究

通过对活性炭的表面改性，并对氯化消毒后的高色度水进行吸附处理，可使其三氯甲烷（THMs)的含量降低到44μg/dm^3，达到国家生活饮用水质标准。     

RPF-AA改性纤维的制备及耐硫酸侵蚀性研究

通过对普通腈纶进行特殊预处理和改性,制备出一种具有良好抗浓酸侵蚀性的反应性高分子纤维材料,对改性纤维材料的化学(酸)稳定性、力学性能、微结构等特征性能研究表明:该纤维材料在120℃和98%浓硫酸环境条件下,经过20 min的侵蚀性处理后,其材料仍能够保持一定的力学性能和微结构,显示了突出的抗浓硫酸侵蚀性.     

Exhaust Emissions from an Engine Fueled with Biodiesel from High-Oleic Soybeans

Biodiesel is a fuel comprising mono-alkyl esters of medium to long-chain fatty acids derived from vegetable oils or animal fats. Typically, engines operated on soybean-based biodiesel exhibit higher emissions of oxides of nitrogen (NOx) compared with petroleum diesel. The increase in NOx emissions might be an inherent characteristic of soybean oil’s polyunsaturation, because the level of saturation is known to affect the biodiesel’s cetane number, which can affect NOx. A feedstock that is mostly monounsaturated (i.e. oleate) helps to balance the tradeoff between cold flow and oxidative stability. Genetic modification has produced a soybean event, designated 335-13, with a fatty acid profile high in oleic acid (>85%) and with reduced palmitic acid (<4%). This high-oleic soybean oil was converted to biodiesel and run in a John Deere 4045T 4.5-L four-stroke, four-cylinder, turbocharged direct-injection diesel engine. The exhaust emissions were compared with those from conventional soybean oil biodiesel and commercial No. 2 diesel fuel. There was a significant reduction in NOx emissions (α = 0.05) using the high-oleic soybean biodiesel compared with regular soybean oil biodiesel. No significant differences were found between the regular and high-oleic biodiesel for unburned hydrocarbon and smoke emissions.     

聚四氟乙烯改性剂的制备及性能

介绍了隔膜法氯碱所用的聚四氟乙烯改性剂，即聚四氟乙烯乳液、聚四氟乙烯纤维（SM-1）、聚四氟乙烯类纤维（SM-2）的制造原理、制造方法以及在隔膜法氯碱上的应用效果。     

Electro-oxidation of hydrazine on electrodes modified with vitamin B12

In this paper we report a kinetic study of the electro-oxidation of hydrazine catalyzed by vitamin B₁₂ pre-adsorbed on an ordinary pyrolytic graphite electrode. Kinetic parameters were determined by linear sweep voltammetry and rotating-disk electrode polarization curves. The order of the reaction is 1 in OH⁻ ions and Tafel plots give slopes of 80 mV/decade. A possible redox-catalysis mechanistic scheme is proposed.