我国氯丁橡胶发展现状及展望

氯丁橡胶是最先实现工业化生产的合成弹性体。本文综述了氯丁橡胶的发展现状及发展展望,着重论述了氯丁橡胶的生产发展现状、市场发展现状和技术发展现状,展望了氯丁橡胶未来的发展,并提出发展建议。     

世界氟化工行业的竞争态势和应对方法

1世界氟化工行业发展简史世界氟化工行业的发展起始于20世纪30年代,美国的DuPont公司是氟化工行业发展的代表,在氟化工产业发展过程中DuPont公司是大部分氟材料发展的创造者和推动者。经过80多年的发展,世界氟化工经历了发展、     

“快与慢”的智慧

中国的发展政策是又快又好全面发展,经济上要平稳较快发展。针对企业自身的发展,东莞市成铭胶粘剂有限公司提出了"稳健经营,快速发展"     

建设美丽园区走好三步棋

化工园区集大型化、集约化、最优化和效益最大化于一体,纵观近年来化工行业发展,化工园区是未来行业发展的必然趋势。美丽化工呼唤美丽园区,化工园区的发展建设应规划为先,走好安全发展、绿色发展、循环发展3步棋,如此才     

河北省硫酸、磷复肥行业“十二五”状况回顾及“十三五”发展思路

介绍河北省硫酸磷复肥工业协会“十二五”工作概况。盘点“十二五”硫酸、磷复肥行业发展的几大亮点,包括积极改造,发展循环经济,创新发展、跨区域发展,延伸产业链综合发展,老企业升级改造。针对行业存在的主要问题,提出“十三五”总体发展思路：肥料发展要适应农业发展、食品安全及创新发展的要求;控制生产规模,加大技术创新力度;加强协会自身建设。     

贯彻落实科学发展观增强企业核心竞争力

党的十七大报告对科学发展观的时代背景、科学内涵和精神实质进行了深刻阐述,对深入贯彻落实科学发展观提出了明确要求。这一科学理论体系,对于我们把握发展规律、创新发展理念、转变发展方式、破解发展难题,努力实现企业科学发展、安全发展、有效发展、和谐发展,具有长远的指导意义。     

加快转变发展方式科学建设化工园区

化工产业是沈阳市工业经济的重要组成部分,是沈阳市的支柱产业之一,在沈阳市国民经济发展中占有重要的地位.本文从沈阳化工园发展现状,发展优势,发展经验以及下一步发展的建议四个方面对沈阳化工园的发展历程进行了详细的阐述,以推动区域经济的发展.     

医药、兽药

国外公司竞相在新加坡发展医药业务 新加坡政府重视发展医药工业,特别注重发展以基因组研究为基础的新药部门,为此,新加坡为国外有兴趣在这一领域发展业务的公司提供支持。日 国外公司竞相在新加坡发展医药业务 新加坡政府重视发展医药工业,特别注重发展以基因组研究为基础的新药部门,为此,新加坡为国外有兴趣在这一领域发展业务的公司提供支持。日     

回眸“十一五”:涂料这五年(企业篇)

<正>行业的发展离不开企业的发展;反之,企业的发展推动着行业的发展。尤其是重点企业的发展代表着行业发展的主流,同时也折射出行业的发展势头。     

抓住机遇,促进中国磷化工产业向深加工、精细化方向快速发展

介绍了中国磷化工产业的发展现状,分析了影响磷化工发展的制约因素,提出了一些发展建议,提出深加工、精细化,用循环经济的发展理念和绿色技术促进磷化工产业的发展是中国发展新型磷化工的必由之路。     

ESR and ENDOR Probes of Skeletal Conformations Implications for Conformations and Orientations of Chlorophylls In Vivo

ESR and ENDOR studies of sterically hindered porphyrins and chlorins provide clear evidence of the flexibility of the porphyrin skeleton, in agreement with crystallographic results. Examples considered are the cation radicals of zinc tetraphenyl-octaethylporphyrin and of the zinc and cobaltous nitrosyl complexes of octaethyl- and methyl octaethyl-chlorins. Extrapolation of the above results suggests that, in vivo, the protein pocket into which the chromophores fit and neighboring residues provide ready means of altering the conformations and properties of the pigments. These considerations can be applied to the primary acceptors of photosystems I and II: a combination of theoretical calculations, model studies and ENDOR results for the chlorophyll and pheophytin acceptors of photosystems I and II, respectively, suggests specific orientation of the 2-vinyl substituents of the chromophores and, in addition, supports the existence of hydrogen bonding at the 9-keto group. The implications of these results are that the protein environment helps control the orientations of the macrocycles and substituents, and thereby optimizes the relative orientations of donors and acceptors to facilitate electron transfer.     

丙烯酸酯共混乳液的粒径和流变性能研究

将纯丙乳液和苯丙乳液通过乳液共混制备出丙烯酸酯共混乳液,探讨了共混比例、共混温度、共混pH值和共混工艺对丙烯酸酯共混乳液的粒径及其分布的影响,并进一步研究了共混乳液粒径大小及分布对其流变性能的影响。结果表明:共混乳液为假塑性流体;随着共混比例和共混温度的升高,共混乳液粒径减小,黏度增大;随着共混pH值的升高,乳液粒径先增大后减小,黏度总体上呈增大趋势;半连续工艺制备的共混乳液粒径分布最窄、黏度最大,连续工艺制备的共混乳液粒径分布最宽、黏度最小,间歇工艺制备的共混乳液粒径分布和黏度居中。     

油气储运存在问题及安全技术探讨

对目前油气储运技术中存在的安全问题进行深层次的探讨,根据引起这些问题的原因,提出相应的解决措施,为保障油气储运过程中的安全奠定基础。     

Scrap of magnesia parts,the reasons for it,and means of reducing it

Conclusions The most common and characteristic forms of scrap of magnesia parts differing in form, dimensions, and composition are shown. These include deviations of the dimensions from the nominal, breaking off of the corners and edges, nonuniformity, welding together, spots, voids, fire cracks, spalls, and cracks of different origin.The reasons for formation of scrap were determined. The primary of them are the reduced quality of the raw material (chromite, magnesite) with a larger quantity of impurities containing limited silicon and calcium oxides, sometimes insufficient density, grain size, and completeness of hydration of the magnesite powders, nonconformity of the bunker, proportioning, mixing, and pressing equipment to the requirements of modern production of progressive high-quality refractories, the insufficiently high binding capacity of lignosulfonates, deviations in the quality of assembly and finishing of press equipment and automatic ejectors, of the car floor lining, and in firing conditions, a high variation in density of the green parts, and nonuniform heating and cooling in the volume of the parts and of the whole charge during firing. More than 50% of the total scrap of all forms is due to firing scrap of parts.The primary means of reducing or eliminating scrap of parts and simultaneously increasing their quality based on the reasons for formation of different forms of it were noted. These above all else, are increasing the volumes and improving and introduction of new methods of concentration of magnesite and chromite, a successive increase in the share of chrome concentrates, chromium-containing broken parts, and powders by firing of magnesite and caustic dust in the production of magnesia refractory parts as the result of a decrease in the share of commercial natural chromite and magnesite, the use in the production of parts of high-quality type PMSP-93 powder produced in shaft kilns and used as the charge for production of fused materials, the use of the prospect of processes for production of dense periclase powders uniform in chemical analysis from recovered caustic dust, replacement of obsolete mixing and press equipment by more modern, increasing the strength of green parts by above all else improving the binding properties of LST and increasing pressing pressure, forming of the taper of parts by the side plates of the die, improving the quality of assembly and increasing the reliability of functioning of press equipment and automatic ejectors, improving car floor linings, introduction of new methods and increasing the volumes of production of progressive unfired refractories in place of certain forms of fired parts, observation of all production parameters, and a relationship of the wages of labor to the quantity of scrap and the quality of refractories.Introduction of the new management system and the active work of the quality groups created will open up and lead to the action of unutilized reserves for reduction of scrap.Translated from Ogneupory, No. 2, pp. 31–38, February, 1989.     

物联平台软件构建企业智能互联中枢

简述了IT技术发展与物联网及智能产品的关系,介绍了物联网的定义、架构并阐明了物联平台软件在企业智能互联进程中的定位和重要作用,进而分析了物联平台软件应具备的五大功能并详细描述了各个功能组件的具体要求,并基于这些功能要求分析了目前主流物联平台软件的类型、特征、功能优缺点和应用案例,指出了物联平台软件的融合发展方向,为物联网建设和应用、企业智能化发展提供了借鉴和参考。     

注塑机肘杆合模机构弹性力学性能的探讨（一）

从注塑机肘杆合模机构弹性变形的运行特征进行分析研究,介绍了作者对弹性力学在注塑机肘杆合模机构中研究应用的一些成果。研究了拉杆和肘杆两者之间抗拉刚度的关系,提出了拉杆及肘杆根据拉伸刚度的设计方法及准则 研究了推力座导杆、销轴、模板支架、模板等抗弯挠度的特征及其相互之间的联系,提出了有关零件抗弯挠度的设计方法及准则 研究了有关零件的挠度和强度之间的内在联系,提出了根据挠度要求进行强度设计的准则。     

农业微生物细菌发酵工艺研究进展

综述了农业微生物的应用发展,以及功能性细菌发酵工艺的研究进展,尤其关注培养基配方和发酵的条件优化,以及农用微生物菌肥发酵菌工艺的优化.通过对细菌发酵培养基的主要成分、各成分的常用物质的分析研究,总结了相应的配比原则及发酵工艺的优化,为开展功能性细菌的高效高量发酵研究提供了思路和方向,并为农业微生物的产业化生产和应用研究...     

翩翩起舞的蝴蝶——农药,是天使还是魔鬼

从农药的发展历史着眼,列举了农药作为天使和魔鬼的两面性以及农药不断更新的原因和新农药创制的艰巨性;从973项目的目标和内容入手,介绍了目前中国新农药创制的现状和发展前景;通过对农药基本知识的普及,帮助纠正人们对农药的偏见和误解,正确对待和使用农药。     

高压玻璃钢管道固化工艺芯模传热特性研究

本文研究采用蒸汽从内部加热的高压玻璃钢管道固化工艺,介绍了其工艺原理,建立了芯模的传热模型以及内部蒸汽流动的动力学模型,基于标准κ—ε两方程湍流模型和汽液两相流相变模型,使用有限元流体分析软件Fluent对芯模传热的蒸汽流动和传热过程进行数值模拟,根据仿真结果得到了蒸汽流场以及温度场分布情况和变化历程,分析了蒸汽流场内压力、温度、速度等物理量与蒸汽控制参数和流道结构参数之间的关系。本文的研究为高压玻璃钢管道固化工艺的实现以及芯模结构参数和蒸汽控制参数的优化提供理论依据。     

The problem of evaluating inventions in manufacturing products made of chemical fibres

In creating a broad spectrum of textile materials, technologies, and techniques with comparable functional applications, methods of assessing the overall quality indexes of the line, the technologies, techniques, and economics of inventions and selecting the priority inventions are required. Based on an evaluation of the inventions with the results of consolidated indexes of technical and economic constituents, organization of the preferred means for its innovative development and adoption of promising or rejection of unsuitable inventions can be recommended. These methods can be differentiated as a function of the phase and environment of the novel process, the type of inventions and specific features of developing them, and their expansion and use. The main purpose of such methods is to define the mechanism of manufacture and tools for processing data on the inventions developed relative to the concrete social and organizational environment of their implementation and the character of their interaction. One of the advantages of the proposed method of evaluating overall product quality indexes is the possibility of assessing the level of development of inventions and preparing for their presentation in the shortest time possible. Plausible presentation of the economic advantages of marketing the creation and use of high-tech inventions can favor successful conclusion of contracts with clients. The accessibility for mastering the method allows personnel of the organizations, in particular, the workers in design-economic departments, to evaluate inventions and select the priority inventions recommended for development and implementation relative to concrete plants. __________ Translated from Khimicheskie Volokna, No. 2, pp. 60–63, March–April, 2008.