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通过分析重点、难点、关键及申报工作等四个层次,以计划及活动为面,以度量、资源、三性、偏差、时限为点,以费用、进度、质量、HSE为制约,以三类资料为辅助,归纳总结创优主要问题,指明关键所在,以备借鉴。 相似文献
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以高羟基聚酯/丙烯酸树脂为基体树脂,以N-75为交联固化剂,以金红石型钛白粉、隔热粉、高岭土、硫酸钡、云母粉为颜填料,以石英砂为防滑骨料,以纳米SiO2为改性剂,在助剂和溶剂的配合下制备双组分中、面配套机车涂料,涂膜具有防滑性、抗电压击穿性、隔热性、抗风沙冲击磨蚀性及防腐蚀性等特点。 相似文献
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调温调湿抗菌内墙涂料的研制 总被引:1,自引:0,他引:1
以零VOC丙烯酸乳液为成膜物,以钛白粉为白色颜料,以硅藻土和定型相变储能材料为填料,以纳米TiO2/ZnO为抗菌剂,在多种助剂的配合下制备的内墙涂料,其涂膜具有自动调温、调湿、杀菌等环保、保健、节能功能。 相似文献
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以社会责任为己任,以国家政策为指引,通过信息学习,不断提高分析和决策水平;以完善绩效考核体系为动力,以融资平台为支撑,通过精准的项目选择,不断提高绿色发展的能效水平;以科学组织设计为前提,以激活人力资源、精良装备、先进工艺的潜在优势为主线,不断提高落实国家政策的执行力;以不断完善绿色管理循环机制为基础,以全方位打造和谐发展体系为通道,坚定走可持续发展的道路。 相似文献
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设备完整性管理体系是以KPI为引领,以风险管控为中心,以“可靠性+经济性”为原则,以全生命周期运行为主线,以业务流程为依据,以信息技术为依托,通过管理与技术的融合,传承中国石化传统设备管理好的做法,引进创新设备管理理念和技术工具并使之有机融合,以体系化的思想为指导,聚焦设备管理,实现了设备管理制度化、制度流程化、流程表单化、表单信息化。本文介绍了天津石化设备完整性管理体系,重点阐述了电气专业体系关键要素建设与实施情况。 相似文献
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以D-山梨醇为引发剂,二甲亚砜为溶剂,氢氧化钾为催化剂,环氧乙烷为单体,阴离子开环聚合合成了多官能度聚乙二醇。详细考察了催化剂、引发剂、溶剂、聚合温度等因素对聚合产物的性能影响。初步确定了聚合条件,聚合温度100~110℃,聚合时间6h。通过官能度的理论计算和测试证明合成的聚合物为多官能度聚乙二醇。 相似文献
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一种新型化学增感剂在X-射线胶片中的应用 总被引:1,自引:0,他引:1
CS 14是 1种聚氧乙烯类化学增感剂。在X 射线胶片中它能提高乳剂的感光度 ,同时能提高胶片的稳定性 ;它是 1种显影促进剂 ,缩短了显影时间 ;它还是 1种表面活性剂 ,能减小卤化银的表面能量 ,有利于其它增感剂的作用。 相似文献
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This is a very first preliminary investigation on the distribution of heterogeneous nature of mineral matter in one of the industrially important Assam (India) pulverized coal using computer-controlled scanning electron microscopy (CCSEM). The results show that clay minerals, quartz, pyrite, and pyrrhotite form the bulk of the mineral matter. Minor minerals, such as calcite, dolomite, ankerite, barite, oxidized pyrrhotite, and gypsum, are also observed in the sample. The particle size distribution (PSD) of the included minerals is generally observed to be finer than that of the excluded ones in the coal. As a consequence, the coal rich in included minerals has more small mineral particles, which may affect its reactivity. Regarding the association of individual mineral species, the proportion of included to excluded is found to be higher in major cases. With regard to the modes of occurrence of major inorganic elements, it is found that Si mostly occurs as quartz and clay minerals, while Al mostly occurs as silicate minerals. Fe is primarily present as iron sulfides, iron oxide, and Fe-Al-silicate. S is partitioned into iron sulfides and gypsum. Most Ca occurs as carbonates and gypsum, with a minor fraction associated with clay minerals. Mg is mainly present as dolomite and clay minerals, with a very minor fraction present as ankerite. The majority of alkali elements are associated with aluminosilicates. P is mostly associated with kaolinite and/or present as more complex compounds containing Al, Si, and other elements as apatite is found to be absent in the coal studied. Ti is mainly present as rutile and kaolinite. 相似文献
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新型双季铵盐杀菌剂的合成及其杀菌性能研究 总被引:1,自引:0,他引:1
以乙二胺、甲酸、甲醇和氯乙酸乙酯为原料,合成了双季铵盐杀菌剂,以绿藻为模型,探讨了双季铵盐的浓度和投加时间对其杀菌性能的影响。结果表明,当双季铵盐的浓度为0.3 g/mL时,杀菌效果较好,3 d可实现79.25%的杀菌率,且投加时间越长,灭菌效果越显著。 相似文献
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Leo G. J. van der Ven Roel Leuverink Harmanna Henderiks Ruud van Overbeek 《Progress in Organic Coatings》2003,48(2-4):214-218
The durability of topcoats is dependent on a large number of factors such as polymer composition, stabilization package and the conditions during the weathering process. For obvious reasons, prediction of the long-term (5–10 years) durability of coatings is very important. Some background information concerning the weathering process as well as methods to trace the degradation during exposure is given. The rate-determining factor for the degradation of PUR coatings is photo-oxidation. The photo-oxidation rate (POR) is controlled by the polymer structure but also stabilizers such as hindered amine light stabilizers (HALS) have a large influence. The prediction of the durability of clearcoats is based on tracing of the POR and of the HALS longevity during exposure. The POR is measured using FTIR-PAS. The HALS longevity is determined by ESR. The results show that degradation can be detected much earlier compared to methods as gloss loss and time-to-cracking. Moreover, detection of differences between systems after short exposure times as well as prediction of the long-term durability are possible. Service life prediction (SLP) of clearcoats based on these chemical–analytical methods become more reliable as with the classical approach. 相似文献
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利用自蔓延高温合成(SHS)原理,选择工业铝粉作为发热剂,菱镁矿为供氧剂,通过铝热反应,研制出了一种以镁砂为骨料,以镁铝尖晶石和炭质材料作为结合相的新型SHS转炉补炉料.对不同环境温度下补炉料的物相组成及显微结构进行了研究,并对合成尖晶石的固相反应原理及SHS产物相的烧结机制进行了探讨.结果表明补炉料中颗粒状的骨料方镁石与SHS反应产物尖晶石、非晶质碳、少量刚玉相和硅酸盐玻璃相共同构成含有气孔的交织结构,形成尖晶石、碳桥和陶瓷相与方镁石骨料的多重结合;SHS反应过程分碳酸盐矿物的分解反应、铝热氧化还原反应(即SHS反应)和合成尖晶石的固相烧结反应三步进行,其烧结受扩散机理控制. 相似文献
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1,3,3-三硝基氮杂环丁烷的合成方法及性能研究 总被引:3,自引:0,他引:3
综述了20世纪90年代以来国外关于含有偕二硝基的四元环硝胺炸药1,3,3-三硝基氮杂环丁烷(TNAZ)的在合成方面所取得的进展,并介绍了TNAZ的物理化学性能参数,证实了这种高能量密度材料易损性低于其他硝胺炸药,适于用作熔铸炸药和增塑剂。 相似文献
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氯酸钠氧化法制偶氮二甲酰胺工艺的研究 总被引:1,自引:0,他引:1
为了解决传统的通氯法生产发泡剂偶氮二甲酰胺(ADC)存在的反应过程难于控制氯气逸出和大量副产品盐酸所导致污染严重、环保费用高的问题,研究了以氯酸钠为氧化剂、卤化物为催化剂联二脲氧化法制备ADC的合成工艺,探讨了各氧化条件对反应过程及产品质量的影响,并得出合理的生产工艺技术参数:BX3、NaBr、助剂W的含量分别为2.5~3.0 g/L、0.18~0.36 g/L、0.27~0.90 g/L,酸浓度为3.5~4.5 mol/L,反应温度为45~54℃,反应时间5~7 h,产品收率大于95%。 相似文献