苯酚改性脲醛树脂合成工艺及性能的研究

用苯酚作为改性剂,采用高温(90℃)缩聚反应合成改性脲醛树脂胶粘剂,改进了合成工艺,缩短了反应时间。通过引入苯环改善了耐水、耐老化性能。分析了各因素对改性脲醛树脂的影响,得到甲醛、尿素、苯酚摩尔比为10:8:1时树脂性能最佳,胶合强度和木破率均达到GB／T 17656-1999标准规定值。     

无烟超薄型钢结构防火涂料的研制

介绍了无烟超薄型钢结构防火涂料的研制方法,将纳米有机-无机硅系阻燃剂应用到超薄型钢结构防火涂料中,改善了以往防火涂料单一使用APP阻燃剂而大量产生浓烟及有毒气体的缺陷。该防火涂料具有较好的耐火性能和装饰性能。     

变性淀粉取代聚乙烯醇生产Al2O3刚玉陶瓷的胶粘剂研究

论述了变性淀粉取代聚乙烯醇(PVA)生产Al2O3刚玉陶瓷的意义及聚乙烯醇结构与吸附性能的关系，并且根据胶粘机理，通过分析Al203胶粒的表面特性和变性淀粉的结构，说明了变性淀粉可以取代聚乙烯醇。     

氟化改性丙烯酸树脂的合成及在飞机蒙皮涂料中的应用

合成了氟化改性羟基丙烯酸树脂,用HDI三聚体为固化剂,配制双组分聚氨酯丙烯酸飞机面漆,介绍了配方设计、性能检测及其在飞机上的使用效果。     

Solar Photocatalytic Degradation of Textile Dyes in TiO2 Suspended Solutions

The degradation and decolourization of direct dye (Everdirect supra turguoise blue, FBL), acidic dye (Isolan orange S-RL) and vat dye (Indanthren red FBB) have been investigated by solar/TiO2 process. The effects of solution pH, dye concentration, dosage of TiO2 and nano-size of TiO2 have been studied. The increase in initial pH (3, 5 and 11) and dye concentration decrease the removal rate. The treatment for FBB and FBL dye solutions is more efficient than that of S-RL.Under optimum conditions, the color removal is found to be almost complete for FBB and FBL while that of S-RL also reaches 95%. Langmuir adsorption isotherm and modified Langmuir-Hinshelwood kinetic model (L-H model) have been fitted to the experimental data and found to correlate the adsorption patterns as well as the kinetics of the dyes studied.     

改性粉煤灰处理奥里油废水的实验研究

初步分析了奥里油废水的水质,研究了用酸改性粉煤灰处理奥里油废水的工艺。奥里油废水是一种含有一定表面活性剂、高COD值(大于6000 mg/L)、难生物降解和难O3氧化降解的炼油废水。利用改酸性粉煤灰可对该废水进行预处理,COD去除率达45%。预处理工艺条件是,室温下灰水质量比15∶50,吸附搅拌时间30 min,pH为2~10。     

聚氨酯改性氯丁接枝低毒溶剂型鞋用胶粘剂的研制

研究了一种能粘多种材质的溶剂型鞋用大底胶。该胶为一种聚氨酯改性氯丁、SBS接枝胶,粘接范围广,对PU、TPR、SBS等材质粘接性能比氯丁接枝胶好,适合鞋厂流水生产线;所用溶剂毒性相当低,对人无害,有利于劳动保护和环境保护。     

利用SPR生物传感器检测缺血修饰白蛋白

缺血修饰白蛋白(IMA)的检测对心肌缺血的早期诊断和治疗具有重要意义。利用纳米金颗粒和混合巯基自组装于金膜表面上,研制了一种快速检测IMA的表面等离子体共振(SPR)生物传感器。同时比较了直接法和抑制法的检测下限。结果表明:直接检测法可以检测到393ng/L的IMA,而抑制检测法检测限小于5.0 ng/L。与现有的IMA检测方法相比,SPR生物传感器具有特异性好、检测下限低以及检测耗时短等优点。     

Electrocatalytic properties of NDGA and NDGA/FAD hybrid film modified electrodes for NADH/NAD redox reaction

The fabrication of monolayers composed of nordihydroguaiaretic acid (NDGA), and hybrid films composed of NDGA-flavin adenine dinucleotide (FAD) adsorbed films was performed in neutral aqueous solutions to produce electrochemically active thin films exhibiting one and two redox couples, respectively. An electrochemical quartz crystal microbalance and cyclic voltammetry were used to study the in situ growth of the NDGA and hybrid NDGA/FAD film monolayers. The NDGA modified film electrocatalytically oxidized NADH, ascorbic acid, dopamine, and N₂H₄ in neutral aqueous solutions. Well-separated voltammetric peaks were observed for dopamine and uric acid mixtures, and also for ascorbic acid and uric acid mixtures using the NDGA/GC modified electrode. When transferred to various aqueous buffered solutions, the two redox couples of the NDGA/FAD hybrid film and their formal potentials were observed to be pH-dependent. The electrocatalytic oxidation and reduction of NADH and NAD⁺ by a NDGA/FAD hybrid film in neutral aqueous solutions was carried out, and the electrocatalytic oxidation of NADH was performed using a NDGA/FAD hybrid film.     

一种在扩散加权图像降噪中的算法

扩散加权图像中的噪声为莱斯噪声并且图像本身含有丰富的边界信息,因而要求对DWI图像有效降噪的同时,能够较好地保留图像的边界信息。由于BEMD算法可将图像分解为细节图像及余项图像,其所分解的细节图像包括DWI图像的边界信息以及主噪声,而余项图像则描述图像的趋势信息。因此,提出一种将二维经验模态分解算法与改进的维纳滤波器相结合的降噪算法,并将该算法应用于DWI图像的降噪中。通过实验,将所提出的算法与其他算法应用于DWI图像的降噪处理,并通过对结果的分析比较证明所提出的算法能够更有效地对DWI图像进行降噪处理。