题录精选

题录精选１大统一轮胎设计理论∥ＫＧＫ，４９［１０］，６９８～７０５（１９９６）（英文）２耐燃轮胎∥ＵＳ５３４１８６２（英文）３轿车轮胎胎面胶的湿牵引性与粘弹性∥ＡＣＳＲＤ，１４９［５］，（１９９６）（英文）４绿色轮胎胎面胶的加工性∥ＡＣＳＲＤ...     

RCAD 2.O系统与轮胎结构设计

介绍轮胎计算机辅助设计系统ＲＣＡＤ２０系统。利用其系统对轮胎各部位进行辅助设计，可以提高设计速度、精度；使用其中的ＢＬＯＣＫ命令建立花纹库，使设计更快捷、简便，不但提高了工作效率，还可提高产品质量，降低成本。     

彩色全橡塑铁饼的研制

彩色全橡塑铁饼由芯胶和外层胶复合组成。芯胶的胶料配方为：ＳＢＲ再生胶１００;硫酸钡２００或５００（对应２或１ｋｇ的毛坯质量）;氧化锌２;硬脂酸１;防老剂Ｄ０５;石蜡０５;硫黄５３;促进剂ＤＭ１２;促进剂Ｄ０３;机油适量。外层胶的胶料配方为：ＳＢＲ３０;ＮＲ３０;高苯乙烯４０;氧化锌５;硬脂酸５;硫酸钡１００;白炭黑１０;古马隆树脂３;防老剂Ｄ１５;石蜡０５;硫黄２５;促进剂ＣＺ１７;促进剂Ｍ０３;着色剂适量。产品色泽鲜艳、手感好,质量和体积均符合国家１９９２田径竞赛规则要求     

NR/NBR并用胶硫化体系的研究

考察了几种典型硫化体系及硫黄／ 促进剂 Ｃ Ｚ／ 促进剂 Ｄ Ｍ 配合对 Ｎ Ｒ／ Ｎ Ｂ Ｒ 并用胶硫化胶力学性能的影响。结果表明,采用普通硫化体系、半有效硫化体系的效果明显优于有效硫化体系及无硫黄硫化体系。通过正交试验对硫黄／ 促进剂 Ｃ Ｚ／ 促进剂 Ｄ Ｍ 的配合进行了初步研究,发现硫黄／ 促进剂 Ｃ Ｚ／ 促进剂 Ｄ Ｍ 以１０／１０／０ 配合可使并用胶硫化胶各项力学性能获得良好的平衡。     

钴盐用量对橡胶与钢丝帘线粘合性能的影响

对硼酰化钴ＭＣ２３（钴质量分数为２３％）用量（０６～１６份）对橡胶与钢丝帘线粘合性能的影响进行研究。采用的基本配方为：ＮＲ１０００；炭黑Ｎ３２６６２０；芳烃油８０；氧化锌９０；硬脂酸０５；防老剂４０２０２０；不溶性硫黄ＩＳ７０２０６０；促进剂ＤＺ１０；粘合剂ＲＳ３５；粘合剂Ａ２３；沉淀法白炭黑５０。结果表明，随着钴盐用量的增大，在未老化、热空气老化及盐水老化条件下，胶料与钢丝的粘合强度有所提高；在湿热老化条件下，粘合强度由于热量和湿气的交互作用而发生较大幅度的下降，但钴盐用量在１０份时粘合强度的下降为最小。综合胶料初始和老化后的应力应变性能和粘合强度，以１０份钴盐用量为最佳。     

题录精选

１我国子午线轮胎的发展状况∥中国化工报,１９９９０８１８（５）（中文）２住友公司轮胎厂取得ＩＳＯ１４００１认证∥ゴム协会言志,７２［６］,３２３～３３４（１９９９）（日文）３东洋公司轮胎厂和非轮胎厂同时取得认证∥ゴム协会言志,７２［６］,３３５～３４３（１９９９）（日文）４轮胎用新型弹性体∥ＡＣＳＲＤＭ,１５５［１］,（１９９９）（英文）５检测载重轮胎损坏的仪器∥ＡＣＳＲＤＭ,１５５［３９］,（１９９９）（英文）６轮胎破裂机理预测∥ＡＣＳＲＤＭ,１５５［４１］,（１９９９）（英…     

LDPE／BR微孔塑料的制备和性能研究

讨论了ＬＤＰＥ／ＢＲ并用比、交联剂、发泡剂及助剂、填料和共混温度、发泡成型温度对ＬＤＰＥ／ＢＲ并用比、交联剂、发泡剂及助剂、填料和共混温度、发泡成型温度对ＬＤＰＥ／ＢＲ微孔塑料性能、结构的影响。结果表明：ＬＤＰＥ／ＢＲ（８０／２０质量比）１００份，ＤＣＰ０９份，ＡＣ３５份，复合发泡助剂３份，活性ＣａＣＯ３２５份，共混温度１１０℃，发泡成型温度１７０℃下，可制得性能优良的微孔塑料。扫描电镜、光学显微镜观察结果表明在上述条件下ＬＤＰＥ／ＢＲ胶料混合均匀，微孔塑料孔眼小、分布较均匀     

热工CAD软件包（1．0版）

热工ＣＡＤ软件包（１．０版）（ＴＥＣＡＤＶｅｒ１．０）１简介ＴＥＣＡＤ为化工部下达任务，由化工部热工中心站组织化工部第一设计院、化工部第三设计院、化工部第四设计院、化工部桂林橡胶设计院、南化公司设计院、辽宁省石油化工设计院六家设计单位的热工技术人员联...     

用R131作多功能配合剂的NBR/PVC并用胶砂浆泵衬胶研制

探讨了用烷基改性酚醛树脂（Ｒ１３１）作多功能配合剂制造ＮＢＲ／ＰＶＣ并用胶砂浆泵衬胶的方法。ＮＢＲ／ＰＶＣ并用胶砂浆泵衬胶的配方确定为：ＮＢＲ７０;ＰＶＣ３０;Ｒ１３１ ７．０;硫黄 １．１;共硫化剂ＤＭＧ ２．５;活性剂 ３．５;促进剂ＤＭ／ＣＺ ２．７;防老剂４０１０ＮＡ／Ｄ １．２;中超耐磨炭黑 ４６;增塑剂ＤＯＰ ５．０;石蜡 ０．６。Ｒ１３１在胶料混炼时分段加入。砂浆泵部件的制备工艺是：     

我国汽车制动液技术性能及市场趋势分析

我国汽车制动液技术性能及市场趋势分析江镇海ＣＨＡＲＡＣＴＥＲＡＮＤＭＡＲＫＥＴＯＦＤＯＭＥＳＴＩＣＶＥＲＩＣＬＥＢＲＡＫＩＮＧＬＩＱＵＩＤ１、国内外汽车制动液技术性能及比较汽车制动液又称刹车油，或称合成制动液，它是用于液压制动系统中传递压力以制止车轮...     

硫化体系对CM/EPDM共混胶性能的影响

研究了不同硫化体系及过氧化物硫化体系中硫化剂用量对CM/EPDM共混胶性能的影响。结果表明,过氧化物(DCP/S)硫化体系的胶料具有适宜正硫化时间和较好综合物理机械性能;采用RCAD配方优化设计中的均匀设计法进行了实验设计,并根据优选结果绘制了等高线图;在实验范围内,DCP比CAMV的影响显著;当DCP用量为2.8～4份且CAMV用量为3～5份时,共混胶硫化胶具有较高拉伸强度和撕裂强度、较低压缩永久变形和较好耐磨性能。     

Improved spinnerette design for extrusion of polymeric large internal diameter hollow fiber membranes

Spinnerettes for extrusion of large (～ 1 mm) internal diameter (i.d.) hollow fiber membranes must possess certain features to extrude fibers with the proper tensile and geometrical properties. Spinnerette designs that properly extrude small i.d. (< 200 μm) hollow fibers will produce large i.d. hollow fibers with low burst strengths because of poor flow patterns and insufficient time in the spinnerette to knit a strong seam interface. In this report, an alternative design is offered that provides much better fiber properties without creating high pressure drops or shear stresses at the spinnerette wall that would normally result in melt fracture. The equations that guide the presented spinnerette design are provided and the suggested design is successfully guided by the results. The new spinnerette design also has the feature of allowing rapid change of hollow fiber wall thickness by making the core fluid pin replaceable. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2157–2163, 2002     

Computer-aided analysis and design of robust multivariable control systems for chemical processes

A conceptual framework to design robust process control systems is develope d and its realization through an interactive computer-aided design software is presented. The overall design methodology is based on a unified treatment of recent theoretical results in modern control and new computational techniques in symbolic logic manipulation, singular value decomposition and optimization. Several physical examples are given to demonstrate the application of the design approach and the utility of its computer software.     

Some observations on the mechanism of action of retarders in rubber vulcanization. A new class of retarder

Attempts have been made to demonstrate the involvement of free radicals in the benzthiazolesulfenamide-accelerated vulcanization of natural rubber. Free radicals were only detected by ESR in reaction mixtures containing the retarder N-nitrosodiphenylamine (NDPA). In addition, NDPA was the only compound found, from the vulcanization accelerator and retarders tested, to affect the free-radical polymerization of methyl methacrylate. A purely ionic mechanism for sulfur vulcanization of natural rubber accelerated by benzthiazolesulfenamide derivatives has therefore been assumed and used to help in the design of new vulcanization retarders. A new class of retarder has been discovered, consisting of hydrocarbylthio derivatives of trisalkylsulfonyl methane. These retarders are believed to be the first vulcanization retarders to act by cleavage of a carbon–sulfur bond.     

水泥窑协同处置生活垃圾技术及工程实践

项目利用200 t/d炉排炉和5 000 t/d新型干法水泥熟料生产线协同处置天等县200 t/d城乡生活垃圾。介绍了水泥窑协同处置生活垃圾技术工艺流程及技术特点,广西天等水泥窑协同处置生活垃圾项目相关情况、设计特点及运行效果,其中水泥线产量及热耗,以及窑尾二恶英、酸性气体及重金属等污染物排放指标都符合相关设计标准。     

5000t/d熟料新型干法生产线国产化纯低温余热发电机组运行分析

通过对首台5000t/d熟料新型干法生产线国产化纯低温余热发电机组设计、安装、运行情况的描述,证明工程设计、设备制造是成功的,同时归纳了工程中应注意的问题,运行操作的要求,以及循环经济产生的效益。     

A systematic visual approach to molecular design via property clusters and group contribution methods

In this work, a new simple yet effective, systematic method to synthesize and design molecules is presented. Visualization of the problem is achieved by employing an annex to the recently developed property clustering techniques, which allows a high-dimensional problem to be visualized in two or three dimensions. Group contribution methods are used to predict the properties of the formulated molecules. For the molecular design problem, the target properties as well as the molecular groups that make up the formulations are identified on a ternary diagram. The target properties are represented as individual points if given as discrete values or as a region if given as intervals. The formulation of the desired molecules is achieved via linear “mixing” of molecular fragments in order to match the desired performance. It should be emphasized that the focus of this paper is the visual molecular clustering approach. Although, for systems that are described by more than three properties an algebraic clustering approach has been developed.     

Y4874回转窑的开发设计

铜陵海螺5000t/d国产化示范生产线，采用南京院自行开发研制的Y4874回转窑。该回转窑结构设计中，采用了实心铸造轮带，浮动垫板，液压档轮，自动调节滑动轴承和直流单传动装置，在窑筒体进，出料端设有耐热钢护板，窑头，窑尾的密封分别采用钢片径向及汽缸压紧端面接触式密封。Y4874回转窑投产至今，运行良好，目前产量基本稳定在5600t/d以上。     

Recent developments in packed columns

Highlights of a recently concluded four year experimental program on random packings are presented. They include (a) a revised definition of loading to achieve better reproducibility; (b) discussion of the erratic behavior near the “flood” point which helps explain the scatter in the published “flood” data; (c) new data showing that with proper distribution, efficiency is stable over a broad range; and (d) controlled maldistribution studies leading to guidelines for distributor design, fabrication and installation. The need to precisely define commonly used terms is emphasized.