棉纺工艺计算机辅助设计软件开发初探

为促进计算机技术在棉纺工艺设计中的应用,运用Delphi7程序设计语言和ADO技术,采用MDI窗体模式开发了基于Windows操作环境的棉纺工艺计算机辅助设计软件.指出:棉纺工艺计算机辅助设计软件有助于消除工艺人员长期以来通过手工计算、查阅资料等传统工艺设计方式所存在的弊端,提高棉纺工艺设计的效率和准确性.经初步试用效果良好.     

可乳化MDI及在麦秸板方面的应用

介绍了可乳化MDI的特点,MDI乳化的途径以及BMY-6309可乳化MDI产品的技术指标、乳液的稳定性以及在麦秸板方面的应用。     

HTPB/液化MDI型聚氨酯与聚苯乙烯共混研究

用同步聚合法制备了一系列HTPB和液化MDI型聚氨酯与聚苯乙烯的混材料，运用FTIR，DSC，TG，SEM和拉力实验机对共物的反应进度、玻璃化转变温度，热稳定性，力学性能和微观形态进行考查，结果表明，共混体系在同步聚合过程中，PU的形成速率明显大于PS的聚合速率，共混材料具有比纯组分较好的热稳定性，其玻璃化温度高温段Tg2外移且程度不大，力学性能显示随着共混物中PS组成的减少材料的拉伸强度和硬度逐渐减小，断裂伸长率先增加后减小，冲击强度增大，共混材料的微观形态呈两相分离，相转变发生在PU／PS组成质量比在15：85到30：70之间。     

多文档界面应用程序主窗口背景绘图实现方法

利用多文档界面主窗体的客户区可以绘制任何所需要的图形和文字,从而可以增强应用程序的美观性.描述了使用C++Builder实现的绘图事件处理步骤,给出了绘制透明图像和背景透明文字的实现方法.     

MDI基碳化二亚胺耐水解稳定剂的研制

在有机磷催化剂作用下，以二苯基甲烷二异氰酸酯(MDI)合成碳化二亚胺预聚体，采用单官能度带活泼氢化合物封端得到耐水解稳定剂。通过对MDI缩合过程动力学研究，优化了MDI基碳化二亚胺耐水解稳定剂的合成条件。实验表明较适宜的反应条件为：温度180～230℃，催化剂用量2．0％～3．0％。并对成品进行了简单的表征。最后将MDI基耐水解稳定剂与Bayer公司的Stabaxol-1进行了应用性能的对比，实验合成样品耐水解性能达到Stabaxol-1的70％水平。     

基于校园网的教学管理信息系统的设计与实现

该文模块化设计了学校教学管理信息系统的功能结构;通过对B/S、C/S两种结构模式的原理和特点的阐述和对比,说明采用B/S和C/S两种结构模式相结合来构造本教学管理信息系统的原因,设计了本教学管理信息系统的工作平台和开发平台;介绍了本教学管理信息系统中所采用的ADO、DLL、MDI三种技术;并给出教学日历子模块的详细实现过程和方法技巧。     

HTPB/液化MDI型PU与PMMA的共混研究

用同步聚合法制备了一系列HTPB／液化MDI型PU与PMMA的共混材料，分别用FTIR、DSC、SEM和拉力实验机对共混材料的反应进度、玻璃化转变温度、力学性能和微观形态进行了考查和研究；结果表明，体系中PMMA优先于PU聚合，共混材料的玻璃化转变温度Tg2随PMMA质量分数的增加略呈上升趋势；材料的拉伸强度和硬度均随体系中PMMA质量分数的增加而增大，断裂伸长率则逐渐减小；体系微观呈两相分离，当PMMA占50％时，相畴最小。     

彩色聚氨酯多功能涂料的研制

介绍了利用ＭＤＩ残液生产彩色聚氨酯多功能涂料的工艺过程。该涂料可在潮湿基面施工。叙述了该材料的反应原理、组成、制备工艺，分析了影响产品性能的主要因素。     

Compatibilisation of various PLA/thermoplastic elastomer blends with diisocyanate coupling agent

Poly(lactic acid) (PLA) is characterised by its inherent brittleness, a detrimental feature for the production of durable bioplastics. PLA has been toughened by a low amount (12?wt-%) of various thermoplastic elastomers (TPE) including poly(ether-b-ester) (PEEs), poly(ether-b-amide) (PEBA) and poly(ether-b-urethane) (PEU). PLA–TPE blends were prepared by using a twin screw extruder. Ductility and impact resistance can be slightly improved with the incorporation of TPEs but but PEBA appears the most efficient. Reactive compatibilisation has been performed with the addition in the melt of a low amount (2?wt-%) of 4,4-methylene diphenyl diisocyanate. All compatibilised blends exhibit high toughness with similar ductility. These blends preserve good stiffness and high tensile strength. Compatibilised PEBA blends can be considered as super tough poly(lactic acid) materials. This work confirms that the flexibility of the elastomer together with the quality of the interfacial adhesion between the rigid (PLA) and the soft (TPE) phases are the primary factors influencing the toughness.     

Comparison of the TSI Model 3306 Impactor Inlet with the Andersen Cascade Impactor: Solution Metered Dose Inhalers

The product performance of a series of solution Metered Dose Inhalers (MDIs) were evaluated using the TSI Model 3306 Impactor Inlet and the Andersen Cascade Impactor (ACI). The goal of the study was to test whether the fine particle and coarse particle depositions obtained using the Model 3306 were comparable to those results obtained by ACI testing. The analysis using the Model 3306 was performed as supplied by the manufacturer as well as with 20 cm and 40 cm vertical extensions that were inserted between the Model 3306 and the USP Inlet. Nine different solution formulations were evaluated. The drug concentrations ranged from 0.08 to 0.8% w/w and the ethanol cosolvent concentration varied between 5 and 20% w/w. In general, it was found that good correlations between the two instruments were obtained. However, for formulations containing 10–20% w/w ethanol it is shown that an extension fitted to the Model 3306 yielded an improved correlation to those obtained from the ACI.