企业发展必须知荣辱 树新风

“以热爱祖国为荣、以危害祖国为耻，以服务人民为荣、以背离人民为耻，以崇尚科学为荣、以愚昧无知为耻，以辛勤劳动为荣、以好逸恶劳为耻，以团结互助为荣、以损人利己为耻，以诚实守信为荣、以见利忘义为耻，以遵纪守法为荣、以违法乱纪为耻，以艰苦奋斗为荣、以骄奢淫逸为耻”。     

危化企业安全文化建设与创新

介绍金泰氯碱的安全文化建设,以文化理念引领员工的行为养成,以安全制度固化员工的操作习惯,强化宣贯传播,以强大的精神力量凝聚员工的创造力,以文管人、以文化人,以文化强安全,助力企业安全管理不断升级。     

我厂硫酸销售的几点做法

分析东北和华北地区的硫酸市场形势，根据本厂具体情况，制定了“以东北为主、以华北为辅、以近为主、以远为辅，以大为主、以小为辅，以资信为主、以价格为辅，交易方式灵活多样，全方位销售服务”的销售方针，取得了较好的效果。     

浅谈水泥企业绿色工厂建设

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。     

浅谈安全管理工作应关注的事项

安全管理工作是以结果论成败,是以过程精细化管理论成败,是以管理零缺陷论成败,是以塑造全体员工自觉安全行为论成败,是以消除隐患、消除各种违章违纪论成败,是以不断提高全体员工的安全素养论成败.     

知识经济

１９９６年亚太经合组织把知识经济定义为以知识为基础的经济。与传统的农业经济、工业经济不同,知识经济是以知识及其产品的生产、流通和消费为主导的新型经济,它区别于以传统工业为产业支柱,以稀缺自然资源为主要依托的旧式经济,它是以高技术产业为第一产业支柱,以...     

谁将成为陶都群中的新老大

以某种产业著称的城镇，很多会以这种产业作为别名。以制陶著名的江苏宜兴，古称陶都；以生产瓷器著名的江西景德镇，古称瓷都。     

发展煤化工的浅见

我国化学工业是以煤化工起家的。虽然六十年代以后,石油化工的比例在逐年增长,但煤化工仍然占主要地位。以合成氨为例,以煤和焦为原料生产的合成氨占总产量的1/3。以电石为原料生产的聚氯乙烯占总产量的80%以     

2013年中国聚氨酯制品消费前景预测

本刊讯中国聚氨酯产业布局目前已基本形成了以上海为中心的长三角地区、以烟台为中心的黄河三角洲环渤海地区、以广州为中心的珠三角地区、以葫芦岛为中心的东北地区、以兰州为中心的西北地区以及正在形成的以重庆为中心的西南地区、以福建泉州为中心的海西地区等聚氨酯产业聚集地区。中国是世界第三大经济体,也是聚氨酯的第二大消费市场。首先,中国生产了全世界95%的冷藏集装箱、     

萍玻工业人才为本

国以才立,政以才治,业以才兴,人才第一.在科技创新、产业创新不断加速的时代,人才资源已成为最重要的战略资源.市场竞争说到底是人才的竞争,而且是最具全局性的竞争.企业要发展,人才是关键.江西萍乡浮玻璃厂牢固树立科学的人才观,以环境吸引人才、以事业凝聚人才、以感情培养人才、以制度选拔人才、以薪酬激励人才,着力开发人才第一资源.     

Morphology and thermal stability of BR/clay composites prepared by a new method

A new potential preparation method named in situ organic modification was used to prepare intercalated polybutadiene rubber (BR)/clay/dimethyl dihydrogenated tallow ammonium chloride (DDAC) composites. That is, BR, pristine clay, and intercalatant DDAC were directly mixed in a Haake rheometer without pretreating the pristine clay with the intercalatant. The morphology of the BR/clay composites was investigated by means of X‐ray diffraction and scanning electron microscopy. The thermal stability of the BR/clay composites was analyzed by thermogravimetric analysis (TGA). The dispersion of clay particles in the BR/clay/DDAC composites is much better than that in the BR/pristine clay and similar to that in the BR/organoclay DK4 (modified with DDAC) composites. BR/clay/DDAC composites have much higher thermal stability than the gum BR, BR/pristine clay, and BR/DK4 composites. The clay/intercalatant ratio has little influence on the thermal stability of the BR/clay/DDAC composites, while clay content has a significant effect on their thermal stability. The enhanced thermal stability of the BR/clay/DDAC composites is related to the dispersion state of clay particles in BR. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 905–913, 2006     

改性粘土制备粘土/POE纳米复合材料的力学性能研究

研究粘土的种类以及用量对所制得的粘土/聚烯烃弹性体(POE)纳米复合材料力学性能的影响。结果表明,在添加相同粘土份数下,与I.30P有机粘土以及十六烷基三甲基溴化铵(CTAB)改性有机粘土相比,I.44P有机粘土制备的粘土/POE纳米复合材料的各向力学性能最佳;随着粘土用量(10份以内)的增加,粘土/POE纳米复合材料的各项力学性能也在不断增强。     

Characterization of waterborne polyurethane/clay nanocomposite adhesives containing different amounts of ionic groups

A series of waterborne polyurethane (WBPU)/clay nanocomposite dispersions containing different amounts of 2,2-dimethylol propionic acid (DMPA) and clay were prepared. It was found that the properties of WBPU/clay nanocomposites were highly dependent on both clay content and DMPA content. The WBPU/clay nanocomposite dispersion with a higher clay content showed a larger mean particle size and a less negative zeta potential. The optimum clay content, which increased with increasing DMPA content, showed maximum tensile strength, Young's modulus and adhesive strength of WBPU/clay nanocomposite. The optimum clay concentrations for WBPU/clay nanocomposite samples containing 3.75, 5.41 and 6.17 wt% DMPA were about 0.5, 1.0 and 2.0 wt%, respectively.     

Effect of screw rotation speed on the properties of polystyrene/organoclay nanocomposites prepared by a twin‐screw extruder

We discuss the effect of screw rotation speed on the mechanical and rheological properties and clay dispersion state of polystyrene (PS)/organoclay (clay) nanocomposites prepared by melt compounding with a counterrotating‐type twin‐screw extruder. Poly(styrene‐co‐vinyloxazolin) (OPS) was used as an additional material. The Young's modulus of the PS/OPS/clay nanocomposites showed the maximum value at a screw rotation speed of 70 rpm in this study. This implied the existence of an optimized screw rotation speed for the melt compounding of the polymer/clay nanocomposites. For PS/clay systems without the addition of OPS, the peak intensity from clay increased and the distance between clay platelets in the nanocomposites decreased with the screw rotation speed. On the other hand, inverse results were obtained for PS/OPS/clay systems. According to the transmission electron microscopy photographs, the PS/OPS/clay nanocomposite at 70 and 100 rpm had fully exfoliated clay platelets. The dynamic rheological properties of the PS/clay nanocomposites were almost the same as those of neat PS. On the other hand, the storage and loss moduli of the PS/OPS/clay nanocomposites at the same frequency were larger than those of the PS/clay system. On the whole, the bonding between clay platelets and PS was important for increasing the viscosity and elasticity in the melts of the PS/clay system. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1165–1173, 2006     

Enhancement of radiation‐resistant effect in ethylene–vinyl acetate copolymers by the formation of ethylene–vinyl acetate copolymers/clay nanocomposites

Ethylene–vinyl acetate (EVA) copolymers/clay nanocomposites, prepared by using nonreactive organophilic clay and reactive organophilic clay, were characterized by X‐ray diffraction and by high‐resolution transmission electron microscopy. The influence of gamma irradiation on the structure and properties of the pure EVA and EVA/clay nanocomposites was systematically investigated. In the presence of gamma radiation, the clay can effectively restrain the increase of the storage modulus of EVA/clay nanocomposites, which was supported by dynamical mechanical analysis. Gamma irradiation had almost no effect on the thermal properties of EVA/clay nanocomposites by using nonreactive organophilic clay, but it obviously improved the thermal stability of EVA/clay nanocomposites by using reactive organophilic clay. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 2532–2538, 2005     

Effects of ultrasound on the synthesis and properties of polyurethane foam/clay nanocomposites

Polyurethane foam (PUF)/clay nanocomposites were synthesized with clay modified by polymeric 4,4′‐diphenylmethane diisocyanate (PMDI) with the application of ultrasound. Transmission electron micrographs showed that the interlayer distance increased for the polyurethane (PU)/clay nanocomposites where ultrasound was applied. The results of the transmission electron microscopy and X‐ray measurements suggest that the application of ultrasound to the clay modification with PMDI improved the efficiency of the clay modification by the effective breakup of the clay agglomerates and intercalation of the silicate layers. In the mechanical tests of the PUF/clay nanocomposites, the flexural and tensile strengths of the PUF/clay nanocomposites showed the maximum value at 3.0 wt % clay content based on PMDI. These results suggest that the increases in the flexural and tensile strengths were perhaps due to the uniform dispersion of the clay by the application of ultrasound. At the same modified clay content, the fire resistance properties were increased for the PUF/clay nanocomposites with the application of ultrasound compared to the PUF/clay nanocomposites without the application of ultrasound. The cell size and thermal conductivity were decreased for the PUF/clay nanocomposites with the application of ultrasound compared to the PUF/clay nanocomposite without the application of ultrasound. Because of these results, we suggest that the smaller cell size and lower thermal conductivity of the PUF/clay nanocomposites were mainly due to the enhanced dispersion of the clay by the application of ultrasound to the mixture of PMDI and clay. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102:3764–3773, 2006     

Reaction kinetics and characteristics of polyurethane/clay nanocomposites

The reaction behavior and physical properties of polyurethane (PU)/clay nanocomposite systems were investigated. Organically modified clay was used as nanofillers to formulate the nanocomposites. Differential scanning calorimetry was used to study the reaction behavior of the PU/clay nanocomposite systems. The reaction rate of the nanocomposite systems increased with increasing clay content. The reaction kinetic parameters of proposed kinetic equations were determined by numerical methods. The glass transition temperatures of the PU/clay nanocomposite systems increased with increasing clay content. The thermal decomposition behavior of the PU/clay nanocomposites was measured by using thermogravimetric analysis. X‐ray diffractometer and transmission electronic microscope data showed the intercalation of PU resin between the silicate layers of the clay in the PU/clay nanocomposites. A universal testing machine was used to investigate the tensile properties of the PU/clay nanocomposites. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 1641–1647, 2005     

Polymer‐Clay Nanocomposites Based on Blends of Polyamide‐6 and Polyethylene

The preparation of polyamide‐6/clay, high‐density polyethylene/clay, and high‐density polyethylene/ polyamide‐6/clay nanocomposites is considered. X‐ray diffraction (XRD), differential scanning calorimetry (DSC), and Fourier Transform Infrared (FTIR) measurements show that the clay enhances the crystallization of the γ‐form of polyamide‐6. The clay also acts as a nucleation agent and causes a reduction of spherulitte size. Scanning electron microscopy (SEM) analysis of fracture surfaces shows that the clay reduces the PA‐6 particle size in the HDPE/PA‐6/clay nanocomposites and changes the morphology. Mechanical properties and the effect of maleated polyethylene are also reported.     

Effects of different kinds of clay and different vinyl acetate content on the morphology and properties of EVA/clay nanocomposites

A series of EVA/clay nanocomposites and microcomposites have been prepared via melt-blending. Using four kinds of EVA with different vinyl acetate (VA) contents: 28, 40, 50 and 80 wt%, and four kinds of clay: three are organophilic clay (OMMT) and one unfunctionalized clay (Na-MMT), the effects of different VA content of EVA and the kinds of the clay on the morphology and properties of EVA/clay nanocomposites were systematically investigated. In previous studies, there are only two distinct nanostructures to distinguish polymer/clay nanocomposites: the intercalated and the exfoliated. But in this paper, we proposed a new nanostructure—‘the wedged’ to describe the dispersion degree of clay in nanocomposites, it means the sheets of clay were partly wedged by the chains of polymer. The wedged, the intercalated and the partially exfoliated structures of EVA/clay nanocomposites were characterized by X-ray diffraction (XRD) and by high-resolution transmission electron microscopy (HRTEM). The enhanced storage modulus of EVA/clay nanocomposites was characterized by dynamic mechanical thermal analysis (DMTA). The enhanced degree in the storage modulus of the OMMT on EVA/clay nanocomposites with the partially exfoliated and intercalated structure is much higher than that with wedged structure, and that with the higher VA content is higher than that with the lower. The thermal stabilities of EVA/clay nanocomposites were also studied by thermal gravimetric analysis (TGA).     

粘土/NBR纳米复合材料的结构与性能研究

采用共絮凝粘土水悬浮液与NBR胶乳共混的方法制备了粘土／NBR纳米复合材料。透射电子显微镜观察表明粘土具有平面取向的纳米分散结构；X光衍射测试表明复合材料中还存在一定量的粘土片层聚集体；随着粘土用量的增大，复合材料的邵尔A型硬度、100％定伸应力、300％定伸应力、拉伸强度和扯断永久变形增大，扯断伸长率变化不大；粘土／NBR纳米复合材料的耐老化性能略优于白炭黑／NBR硫化胶；粘土可提高复合材料的气体阻隔性能，但对复合材料的氧指数影响不大。