GMA熔融接枝EPDM/NR共混物的动态硫化

研究了甲基丙烯酸缩水甘油酯（ＧＭＡ）熔融接枝ＥＰＤＭ（ＥＰＤＭｇＧＭＡ）与ＮＲ共混物的动态硫化。考察了ＧＭＡ用量、交联剂品种和用量以及动态硫化工艺条件对ＥＰＤＭｇＧＭＡ／ＮＲ动态硫化共混物力学性能的影响。结果表明：与直接静态硫化物相比,动态硫化物的拉伸强度提高了４８２％,热氧老化性能也得到了明显的改善;ＧＭＡ用量为３～５份、二乙烯三胺（ＤＥＴＡ）用量为０３份时,动态硫化共混物的力学性能较好;动态硫化的工艺条件对共混物性能无明显影响。另外,红外光谱测试表明,ＥＰＤＭ确实成功接枝了ＧＭＡ。     

LARGE SCALE PURIFICATION OF PHOSPHOGLYCERATE KINASE（PGK） AND GLYCERALDEHYDE 3－PHOSPHATE DEHYDROGENASE（GAPDH） FROMYELLOW PEAS BY PEG／REPPAL PES AQUEOUS TWO PHASE SYSTEM AND ION EXCHANGE CHROMATOGRAPHY

ＬＡＲＧＥＳＣＡＬＥＰＵＲＩＦＩＣＡＴＩＯＮＯＦＰＨＯＳＰＨＯＧＬＹＣＥＲＡＴＥＫＩＮＡＳＥ（ＰＧＫ）ＡＮＤＧＬＹＣＥＲＡＬＤＥＨＹＤＥ３－ＰＨＯＳＰＨＡＴＥＤＥＨＹＤＲＯＧＥＮＡＳＥ（ＧＡＰＤＨ）ＦＲＯＭＹＥＬＬＯＷＰＥＡＳＢＹＰＥＧ／ＲＥＰＰＡＬ...     

3,5-diBr-PADAP作为铁和铜配位滴定指示剂的研究

研究了３,５ｄｉＢｒＰＡＤＡＰ作配位滴定的指示剂,在ｐＨ１．８～２．０时用ＥＤＴＡ标准溶液滴定铁（Ⅲ）;在滴定铁（Ⅲ）后的溶液中,加入对Ａｌ３＋过量的ＥＤＴＡ标准溶液,在ｐＨ３．８～４．０时与Ａｌ３＋生成稳定的络合物,调至ｐＨ５．０,用氟化铵置换出Ａｌ－ＥＤＴＡ配合物中的ＥＤＴＡ,用硫酸铜标准溶液滴定,测定铝     

溶胶-凝胶法合成BaAl_2Si_2O_8超细粉末的研究

以Ｂａ（ＯＨ）２·８Ｈ２Ｏ，Ａｌ（ＮＯ３）３·９Ｈ２Ｏ，ＴＥＯＳ为原料，采用溶胶凝胶法制备ＢａＯＡｌ２Ｏ３ＳｉＯ２三元系粉末，研究了不同因素对生成稳定溶胶和胶化时间的影响，用ＴＧＤＴＡ、ＸＲＤ研究了溶胶凝胶的热处理过程，用ＴＥＭ观察了粉体的粒径。     

农药新化合物(杀菌剂)专利文摘(1999年1月～1999年6月)

苯甲氧苯基环丙烷化合物作为杀菌杀虫剂ＥＰ８８９０２４（Ｒｏｈｍ＆Ｈａｓｓ）１（３羟基苯基）２苯基环丙烷α［２（溴甲基）苯基］β甲氧基丙烯酸甲酯以及ＫＯＨ在ＤＭＦ中搅拌得到５９％的３甲氧基２［２［３（２苯基环丙基）苯氧甲基］苯基］丙酸甲酯对黄瓜Ｓｐｈａｅｒｏｔｈｅｃａｆｕｌｇｉｎｅａ有防效。ＯＣＨ２ＣＨＣＨ３ＯＣＨ２ＣＯＯＭｅ［（氨基苯氧苯基）乙酰胺基］异噻唑及吡啶化合物杀虫杀菌剂（ＢａｙｅｒＡＧ）ＤＥ１９７２７１６２２－５ｇ４氯３甲基５［４（４硝基苯氧基…     

EXPERIMENTAL INVESTIGATION OF KINETIC AND TRANSPORT PARAMETERS IN A WALL－COOLED FIXED－BED REACTOR

ＥＸＰＥＲＩＭＥＮＴＡＬＩＮＶＥＳＴＩＧＡＴＩＯＮＯＦＫＩＮＥＴＩＣＡＮＤＴＲＡＮＳＰＯＲＴＰＡＲＡＭＥＴＥＲＳＩＮＡＷＡＬＬ－ＣＯＯＬＥＤＦＩＸＥＤ－ＢＥＤＲＥＡＣＴＯＲＺｈｅｎ－ＭｉｎＣＨＥＮＧａｎｄＷｅｉ－ＫａｎｇＹＵＡＮ（ＵＮＩＬＡＢＲｅｓｅ...     

高效凝胶渗透色谱法研究醇酸树脂的分子量分布

高效凝胶渗透色谱法研究醇酸树脂的分子量分布张泉福（化工部常州涂料化工研究院）ＳＴＵＤＹＯＮＴＨＥＭＷＤＯＦＴＨＥＡＬＫＹＤＲＥＳＩＮＳＢＹＨＩＧＨＰＥＲＦＯＲＭＡＮＣＥＧＥＬＰＥＲＭＥＡＴＩＯＮＣＨＲＯＭＡＴＯＧＲＡＰＨＹ￥ＺｈａｎｇＱｕａｎｆｕ　ｅ...     

EVA/EPDM/IR/IR共混发泡材料的性能研究

研究了乙烯醋酸乙烯酯共聚物（ＥＶＡ）／ＥＰＤＭ／ＩＲ三元共混和ＥＶＡ／ＥＰＤＭ／ＩＲ／ＩＲ四元共混发泡材料的性能。在ＥＶＡ中混入ＥＰＤＭ可使发泡材料的拉伸强度、撕裂强度和粘合强度提高,而收缩率和压缩永久变形降低;在ＥＶＡ中混入ＩＲ除具备混入ＥＰＤＭ同样的优点外,还可提高发泡材料的柔性;ＩＲ的混入可改善发泡材料二次热压成型制品的表面清晰度。     

2,2-二烷基-2-烷胺基苯乙酮/二芳基酮复合引发体系光聚合的加和作用

本文研究了２，２－二烷基－２－烷胺基苯乙酮（α－ＡＫ）和二芳基酮（ＤＡＫ）（包括二苯酮（ＢＰ）、米酮（ＭＫ）、二乙基蒽醌（ＥＡＱ）和硫杂蒽酮（ＴＸ））复合体系的加和作用．体系中ＤＡＫ的添加显著地改善了α－ＡＫ在近紫外光区长波段无吸收的缺陷．光聚合实验比较了ＤＡＫ的效果，其中氯代ＴＸ、ＢＰ增效作用显著，使聚合反应速度增加１．３～１．５倍，而ＭＫ和ＥＡＱ没有明显影响．同时还研究了溶剂极性、浓度和取代基的影响．结果表明，溶剂极性增加起负影响，α－ＡＫ／ＤＡＫ等摩尔浓度效果最佳和氯代ＴＸ活性高于烷基取代ＴＸ．通过吸收光谱α－ＡＫ／ＤＡＫ复合体系的加和作用机制进行了研究，结果证明三重态的能量传递敏化反应和光还原反应两种反应过程并存，它们的贡献因二芳酮不同而有差异．     

化纤专业常见英语缩写含义

缩写英语全称中文含义ＡＴＹＡｉｒｔｅｘｔｕｒｅｄｙａｒｎ空气变形纱ＣＶＶｉｓｃｏｓｅ粘胶、粘胶纤维ＣＬＹＬｙｏｃｅｌｌＮ—甲基吗啉新溶剂法纤维ＤＭＴＤｉｍｅｔｈｙｌｔｅｒｅｐｈｔｈａｌａｔｅ对苯二甲酸二甲酯ＤＴＹＤｒａｗｔｅｘｔｕｒｅｄｙａｒｎ牵伸变形丝、弹力丝ＤＴＤｒａｗｔｗｉｓｔｅｄ牵伸加捻丝ＥＧＥｔｈｙｌｅｎｅｇｌｙｃｏｌ乙二醇ＥＬＥｌａｓｔａｎｅ（ｓｐａｎｄｅｘ）弹性纤维ＦＦｉｌａｍｅｎｔ长丝ＦＤＹＦｕｌｌｙｄｒａｗｙａｒｎ全牵伸丝ＦＯＹＦｕｌｌｙｏｒｉｅｎｔｅｄｙａｒｎ全取向丝Ｈ…     

膨化硝酸铵的感度特征研究

膨化硝酸铵是近年来得到广泛使用的工业炸药氧化剂，本文对其撞击感度，摩擦感度，爆发点，火焰感度，静电火花感度等危险感度进行了测定，并对膨化硝酸铵进行了PSC实验，以及对雷管感度及冲击波感等实用感度进行了测定，研究表明，同普通硝酸铵相比，膨化硝酸铵具有较低的危险感度及良好的实用感度。     

CA-SA分子合金的制备及储热性能研究

用差示扫描量热仪(DSC)分析研究了癸酸(CA)/硬脂酸(SA)二元混合物的热性能,结果表明,CA-SA合金没有一个确定的低共熔点,只有一个配比范围,并用IR和DSC对81%CA-SA二元混合物经180次加速冷热循环前后的分子结构和热性能进行对比研究,分析表明,此共熔物的分子结构没有发生变化,相变温度和相变焓变化较小,热性能稳定,适合作为相变储能材料。     

DSC对尿素二元混合体系低共熔点的测定

利用尿素可与多种物质形成低共熔物的特性,以降低混合料浆的温度,从而可减少尿基复合肥中缩二脲的生成量。使用差示扫描量热仪(DSC)分别测定尿素-氯化铵和尿素-氯化钾二元体系共熔特性,得到固液相图,确定了尿素二元混合体系的最低共熔点。     

Measurement and correlation of the solid-liquid equilibrium of 2-(tert-buty)-5-methylphenol and 2-(tert-buty)-4-methylphenol binary system

In this work, the enthalpy of fusion and melting points of 2-(tert-butyl)-5-methylphenol (2B5MP) and 2-(tert-butyl)-4-methylphenol (2B4MP) were measured by differential scanning calorimetry (DSC). The binary solid-liquid equilibrium (SLE) of both compounds were predicted by integrated computer aided system (ICAS) and measured by DSC. The corresponding eutectic molar composition is 0.6998 and the eutectic temperature is 281.96 K. The quasi-static heat capacities of 2B5MP and 2B4MP were evaluated by stochastic temperature modulation DSC technique (TOPEM). The SLE experimental data were correlated using the Margules, Wilson, and non-random two liquid (NRTL) equations and a good agreement between measurement and calculation could be obtained.     

Solid-liquid equilibrium of dimethyl terephthalate(DMT),dimethyl isophthalate(DMI)and dimethyl phthalate(DMP)in melt crystallization process

The binary solid-liquid equilibrium of Dimethyl Terephthalate(DMT),Dimethyl Isophthalate(DMI)and Dimeth-yl Phthalate(DMP)was investigated by experiment and differential scanning calorimetry(DSC).The result dem-onstrated DMT/DMI and DMT/DMP systems are eutectic while DMI/DMP is a solid-solution system.The eutectic temperature of DMT/DMI system is 336.7 K and that of DMT/DMP is 271.1 K.Furthermore,a classical solid-liquid phase equilibrium model was used to fit the experimental data of the eutectic systems of DMT/DMI and DMT/DMP and the theoretical model could describe the eutectic solid-liquid phase diagrams properly.     

Interactions of LiBr with calcite and calcium oxide powders

The interaction of LiBr with calcite and calcium oxide powders have been studied with and without the calcite decomposition reaction, using DTA and TG analysis plus SEM and RX observations. Interactions in LiBr  CaCO₃ system show two possible phase transformations at the temperature of 748 K and 786 K. The second one is due to the formation of an eutectic liquid phase in the LiBr-rich region. The rate of decomposition of calicite powders was measured in dry nitrogen and in a high partial pressure of CO₂ with and without LiBr. The addition of LiBr causes the decomposition reaction occur at a lower temperature. The LiBr changes the mechanism of the reaction. The decomposition process occurs through a liquid-phase path given by the eutectic of LiBrCaCO₃. The total rate of reaction as well as the temperature dependence are related to the liquid phase. The CaCO₃ powders obtained have a very dense structure with a high degree of crystallization. Probably the LiBrCaO eutectic provides a solution path for CaO recrystallization. The effectiveness of salt addition in lowering the decomposition temperature of carbonates seems promising in saving energy, as well as in promoting changes in morphology of important commercial oxide powders.     

LiNO3-NaNO3-KNO3三元熔盐材料的设计及热稳定性研究

采用共形离子溶液模型(conformalionic solution model, CIS) 在二元熔盐体系相图的基础上，对三元熔盐体系LiNO₃-NaNO₃-KNO₃进行了相图计算，得到该三元体系最低共熔点为117.7℃，相应的摩尔分数组成分别为x(LiNO₃) = 0.375，x(NaNO₃) = 0.075，x(KNO₃) = 0.550。按照热力学最低共熔点计算结果，采用熔融法制备了三元硝酸熔盐，通过DSC和TG实验测定其最低共熔点为118.3℃，这与计算得到的结果(117.7℃)基本一致。TG测试结果表明当温度低于587.2℃时，该三元熔盐体系较为稳定，其工作温度范围为118.3~587.2℃，该三元硝酸熔盐适合在太阳能热发电中作为高温传热蓄热材料使用。     

应用于低温加热的肉豆蔻酸和硬脂酸共熔混合物的储热特性

Stearic acid （67.83℃） and myristic acid （52.32℃） have high melting temperatures that can limit their use as phase change material （PCM） in low temperature solar heating applications such as solar space and greenhouse heating in regard to climatic requirements. However, their melting temperatures can be adjusted to a suitable value by preparing a eutectic mixture of the myristic acid （MA） and the stearic acid （SA）. In the present study, the thermal analysis based on differential scanning calorimetry （DSC） technique shows that the mixture of myristic acid （MA） and stearic acid （SA） in the respective composition （by mass） of 64% and 36% forms a eutectic mixture having melting temperature of 44.13℃ and the latent heat of fusion of 182.4J.g^-1. The thermal energy storage characteristics of the MA-SA eutectic mixture filled in the annulus of two concentric pipes were also experimentally established. The heat recovery rate and heat charging/discharging fractions were determined with respect to the change in the mass flow rate and the inlet temperature of heat transfer fluid. Based on the results obtained by DSC analysis and by the heat charging/discharging processes of the PCM, it can be concluded that the MA-SA eutectic mixture is a potential material for low temperature thermal energy storage applications in terms of its thermo-physical and thermal characteristics.     

钝感发射药的热分解性能实验研究

运用热重法（TG）及差示扫描量热法（DSC）研究了不同钝感剂种类及浓度对钝感发射药的热分解性能的影响。以TG曲线和DSC曲线的临界热分解温度来定性地表征钝感发射药的点火难易程度,传统观点认为发射药经钝感处理后其点火温度应当升高;而实验结果表明对于本文所述钝感剂及其不同浓度处理的钝感药,其TG曲线和DSC曲线的临界热分解温度并未升高,而是略有下降,DSC曲线的吸热量有显著的降低,并对这一实验结果给出了简要的分析。     

CRITICAL SELF-ASSEMBLY CONCENTRATION OF AN IONIC-COMPLEMENTARY PEPTIDE EAK16-I

Understanding the process of self-assembly of peptides has been important in various biomedical engineering applications. This work focuses on the effect of peptide concentration on the molecular self-assembly of an ionic-complementary peptide, EAK16-I (AEAKAEAKAEAKAEAK), in aqueous solution. The surface tension and self-assembled nanostructures were determined for a wide range of peptide concentrations using axisymmetric drop shape analysis-profile (ADSA-P) and atomic force microscopy (AFM), respectively. Surface tension measurements revealed a critical self-assembly concentration of 0.3 mg peptide/ml water, below which the surface tension decreased rapidly with increasing peptide concentration, and above which the surface tension remained at a constant, plateau value. There were two structural transitions observed with increasing peptide concentration: the first was from globular nanostructures to fibrils, and the second from the fibrils to relatively thick fibers. The second structural transition occurred at the critical self-assembly concentration as determined by the surface tension measurements. The nanostructural behavior of EAK16-I was compared with that of EAK16-II, which has the same amino acid composition but a different charge distribution. Salt effects were also examined by adding NaCl to the peptide solution. The salt addition facilitated the formation of peptide fibrils at low peptide concentrations but increased the critical self-assembly concentration, which occurred at 0.8 mg peptide/ml water in the presence of 20 mM NaCl. The structural transitions involved in the self-assembly of EAK16-I resemble those from protofibrils to fibrils observed with numerous naturally occurring peptides. An understanding of this structural transition may have relevance in the analysis and treatment of peptide/protein conformational diseases and have application in the production of self-assembled protein nanostructures.