配方组成对UPVC异型材耐候性的影响

从配方角度研究不同UPVC异型材的耐候性，探讨了不同原料和助剂（PVC、稳定剂、钛白粉、冲击改性剂、CaCO3等）对异型材老化和长期耐候性的影响，并提出优化配方的要点。     

废聚酯再资源化制备涂料研究进展

介绍了国内外化学降解废聚酯制备涂料的研究进展。分别从聚酯树脂涂料，醇酸树脂涂料以及聚氨酯涂料讨论了废聚酯回收利用的开发前景，并指出中国应大力加强废聚酯再资源化的研究开发工作。     

γ辐射降解法制备小分子水溶性壳聚糖

用γ辐射降解法成功制备了一系列小分子水溶性壳聚糖。研究了不同条件下γ射线对壳聚糖的降解效应以及吸收剂量对产物分子量和水溶性产物得率的影响,分析了不同预处理条件对辐射降解产额(Gd值)的影响,并对壳聚糖辐射降解的机理进行了初步探讨。所得产物用凝胶渗透色谱(Gel permeation chromatography, GPC)、傅立叶变换红外光谱(Fourier transform infrared spectrometer,FT-IR)、紫外-可见光谱(Ultraviolet-Visible spectrophotometry,UV-VIS)等手段进行了表征分析。结果表明,壳聚糖在降解过程中不但分子量显著减少, 而且化学结构发生了明显变化,·OH自由基在壳聚糖辐射降解过程中起着至关重要的作用。     

EM>N/EM>，EM>N-/EM>二乙基

研究了N,N-二乙基羟胺(DEHA)水溶液辐解产生的气态烃。当DEHA浓度为0.1~0.5 mol/L,剂量为10~1 000 kGy时,甲烷、乙烷、丙烷和正丁烷的体积分数随剂量的增加而增加,但随DEHA浓度的增加而减少。乙烯和丙烯的体积分数随DEHA浓度的增加而增大,它们与剂量的关系与DEHA浓度有关。     

浅谈交联电缆的接地故障

重点介绍了交联电缆绝缘击穿接地的主要原因——水树枝劣化机理，阐述了降低水树枝劣化速率的主要对策及寻找交联电缆接地故障点的方法。     

Effect of Overcharge on Electrochemical Performance of Sealed-Type Nickel/Metal Hydride Batteries

The effects of overcharge on electrochemical performance of AA size sealed-type nickel/metal hydride（Ni/MH） batteries and its degradation mechanism were investigated. The results indicated that the relationship between the effects of different overcharge currents on the increasing velocity of inner pressure and the degradation velocity of cycle life and discharge voltage remains in almost direct proportion. After overcharge cycles, the positive electrode materials remain the original structure, but there occur some breaks because of the irreversible expand of crystal lattice. And the negative electrode alloy particles have inconspicuous pulverization, but are covered with lots of corrosive products and its main component is rare earth hydroxide or oxide. These are all the main reasons leading to the degradation behavior of the discharge capacity and cycle life of Ni/MH batteries.     

Fabrication, in vitro Degradation and Cytotoxic Assay of Different Cystalline Phases Calcium Polyphosphate

1Introduction Mostofthematerialsusedhistoricallyarecalcium phosphatessuchashydroxyapatite(HA),tricalciumphosphates(TCP),tetracalciumphosphate(TTCP),and cominationofthevariousphasesofcalciumphosphates[1].Calciumphosphatematerialshavesomeoutstandingprop ert…     

绿色包装设计模式的解析

论述了绿色包装设计对于人与自然的生态平衡关系,以及如何提高其产品在国内外的市场竞争力.促使人们重新面对一个基本问题:市场需求什么样的产品包装,如何设计这些产品包装.基于可持续发展的战略思想,提出了探索新的包装设计模式,传达绿色资讯,引导绿色消费.     

添加剂对烧结矿冶金性能的影响

在采用烧结矿表面喷洒CaCl2溶液进行生产时，改善了烧结矿的低温还原粉化性能，却加快了除尘系统洗涤塔内衬钢板的腐蚀速度。研究采用含硼添加剂替代部分CaCl2外喷烧结矿，能有效地抑制烧结矿的低温还原粉化，很好地改善了衬板腐蚀状况，并对烧结矿的软化温度和还原性等重要冶金性能的影响，进行了测试分析。     

Plasma Induced Degradation of Benzidine in Aqueous Solution

The degradation of benzidine in aqueous solution by the low temperature plasma was examined. The results showed that the concentration of medium and the value of pH have an appreciable effect on the degradation of benzidine. What is more important is that iron ions acting as a catalyst play an important role in this reaction. For exploring the degradation mechanism of benzidine, some of the intermediate products were recorded by HPLC (high performance liquid chromatography).