氯化聚乙烯的生产应用及国内市场分析

介绍了氯化聚乙烯的性能、生产方法和用途。分析了我国氯化聚乙烯的生产消费现状及市场前景，提出了发展我国氯化聚乙烯生产的一些建议。     

氯化聚乙烯的生产应用及市场分析

介绍了氯化聚乙烯的性能、生产方法和用途，分析了我国氯化聚乙烯的生产消费现状及市场前景，提出了发展我国氯化聚乙烯生产的一些建议。     

氯化聚乙烯的生产方法和应用

介绍了氯化聚乙烯(CPE)的性能、生产方法和用途。提出了发展我国氯化聚乙烯生产的一些建议。     

国内外氯化聚乙烯生产应用概况

氯化聚乙烯(CPE)是由聚乙烯氯化而制得的产品,用途广泛。本文介绍了CPE国内外生产应用概况,并对我国发展CPE提出了建议。     

氯化聚乙烯专用HDPE树脂的生产现状及市场分析

我国氯化聚乙烯专用HDPE树脂在质量和数量上均不能很好地满足国内氯化聚乙烯的生产的需要,文章介绍了国内的氯化聚乙烯专用HDPE树脂生产厂家、工艺、牌号及产量,对该专用树脂的市场情况、生产成本和经济效益做了分析,并对我国氯化聚乙烯专用树脂的开发和生产提出建议。     

浅析氯化聚乙烯的生产应用

介绍了氯化聚乙烯( CPE)的性能、用途及生产工艺,并对发展国内氯化聚乙烯生产提出宝贵的建议.     

氯化聚乙烯市场状况及生产技术

分析了国内外氯化聚乙烯的产能、产量及市场情况,说明氯化聚乙烯的市场将会有更大增长,我国氯化聚乙烯生产和需求都将会有大幅度增长.详述氯化聚乙烯的生产工艺溶液法、水相法和固相法.     

氯化聚乙烯的生产应用及市场前景

介绍了氯化聚乙烯（CPE）的性质、生产方法及应用情况，并对其市场发展前景作了展望。     

氯化聚乙类的生产应用及市场前景

介绍了氯化聚乙烯（CPE）的性质，生产方法及应用情况,并对其市场发展前景作了展望。     

氯化聚乙烯生产、应用及市场状况

我国从60年代开始对氯化聚乙烯(CPE)的生产工艺进行研究,70年代开始工业化生产,经过几十年的发展,我国拥有了固相法、溶剂法和水相悬浮法3种主要生产工艺,其中部分技术已处于世界领先地位。近年来国内氯化聚乙烯生产规模不断扩大,产量逐年递增。预计2002年我国氯化聚乙烯总生产能力约17万t/a,产量约10万t/a,成为世界第一大氯化聚乙烯生产国。     

茂金属双峰聚乙烯的研究进展

概述了用复合茂金属催化体系法和工艺法制备双峰聚乙烯的研究进展，讨论了２组分比例，及聚合温度、聚合压力、氢气用量对茂金属双峰聚乙烯制备的影响规律。     

Highly filled polyolefin plastomer formulations for possible PVC replacement in flooring

Calcium carbonate highly filled composites of a polyolefin plastomer (POP), and its blends with postconsumer linear low‐density or high‐density polyethylene (PC‐LLDPE or PC‐HDPE) were prepared and evaluated. The mechanical properties of compounded POP and its blends were compared with those of a PVC–calcium carbonate formulation used for flooring applications. Tensile and impact properties of calcium carbonate‐filled POP composites compare very favorably to the PVC‐based formulation at filler loadings as high as 200 phr. Moreover, postconsumer LLDPE or HDPE can replace at least 50% of the POP in these composites without affecting their main properties. DSC analyses indicate that the synergism occurring in mechanical properties for some of the blend compositions, may be related to the ability of the individual polymers to cocrystallize in the respective blends. This article presents the results of a preliminary study. Continued research is expected to contribute toward a complete characterization of the compounded POP/postconsumer PE blends to establish if they can replace plasticized PVC compounds in some or all flooring applications. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1156–1168, 1999     

氯磺化聚乙烯的合成与应用

介绍了聚乙烯、氯化聚乙烯及氯磺化聚乙烯的生产技术、加工应用进展及发展前景。     

聚乙烯热裂解制备聚乙烯蜡四集总动力学模型

通过对高密度聚乙烯进行釜式热裂解实验,研究高密度聚乙烯的热裂解行为,计算动力学反应参数,建立了聚乙烯热裂解的集总动力学模型,并讨论了反应温度及反应时间对模型的影响,对预测产品产率及分布起到指导性作用。     

Chemical binding of jojoba liquid wax to polyethylene

Jojoba wax was chemically bonded to polyethylene—in film or hollow fiber form—via a stable sulfonamide bond. The jojoba-bonded polyethylene was obtained by binding allyl amino jojoba derivatives to chlorosulfonated polyethylene. The amount of jojoba added to the polymer ranged from 9 to 98% (w/w), depending onthe reaction conditions. Swelling of the polymer in the reaction solvent was the major factor affecting the efficacy of the chemical binding of the jojoba amino groups to the chlorosulfonyl entities of the polymer. The double-bond regions in the bound jojoba wax were preserved, i.e., they were shown to be reactive in a bromination reaction. These modified membranes can find application in separation processes, such as metal ion separation and pervaporation.     

改进的催化剂的乙烯聚合动力学研究

The study concerns the use of MgCl2-supported high-activity Ziegler-Natta catalysts for the polymerization of ethylene. In particular, two types of catalysts were investigated, which were N-catalyst (BRICI) and improved polyethylene catalyst. The effects of catalyst structure on kinetic behavior were examined. The distribution of active centers in these catalysts was investigated by energy dispersive analysis by X-rays (EDAX), and morphologies of catalyst particles and polymer products were examined by scanning electron microscope (SEM). Hydrogen response and copolymerization performance were investigated and compared with the two catalysts. The results were correlated with the kinetic behavior of the two catalysts and appropriate models for polymer particle growth were presented. The improved polyethylene catalyst showed higher activity, better hydrogen response and copolymerization performance.     

Blend of high‐density polyethylene and a linear low‐density polyethylene with compositional‐invariant mechanical properties

This article presents the tensile properties and morphological characteristics of binary blends of the high‐density polyethylene (HDPE) and a linear low‐density polyethylene (LLDPE). Two constituents were melt blended in a single‐screw extruder. Injection‐molded specimens were evaluated for their mechanical properties by employing a Universal tensile tester and the morphological characteristics evaluated by using a differential scanning calorimeter and X‐ray diffractometer. It is interesting to observe that the mechanical properties remained invariant in the 10–90% LLDPE content. More specifically, the yield and breaking stresses of these blends are around 80% of the corresponding values of HDPE. The yield elongation and elongation‐at‐break are around 65% to corresponding values of HDPE and the modulus is 50% away. Furthermore, the melting endotherms and the crystallization exotherms of these blends are singlet in nature. They cluster around the corresponding thermal traces of HDPE. This singlet characteristic in thermal traces entails cocrystallization between these two constituting components. The clustering of thermal traces of blends near HDPE meant HDPE‐type of crystallites were formed. Being nearly similar crystallites of blends to that of HDPE indicates nearness in mechanical properties are observed. The X‐ray diffraction data also corroborate these observations. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2604–2608, 2002     

国内线性低密度聚乙烯现状

综述了国内线性低密度聚乙烯市场应用、生产情况、消费状况及技术进展情况,并提出了以后的发展建议。     

PET-PEN共聚酯的合成研究

以2,6-萘二甲酸(NDA)、对苯二甲酸或2,6-萘二甲酸二甲酯(NDC)、对苯二甲酸二甲酯与乙二醇为原料,在2 L聚合反应装置上,采用直接酯化法或酯交换法合成聚对苯二甲酸乙二酯(PET)-聚2,6-萘二甲酸乙二酯(PEN)共聚酯(PETN),探讨了PETN的合成反应条件。结果表明:直接酯化法较酯交换法更加可行易控;直接酯化法反应条件:酸/醇摩尔比为1:(1.3～1.5),NDA摩尔分数(相对于酸的总量)为28%,酯化阶段无需催化剂,酯化反应温度220～250℃,缩聚反应温度280～295℃,合成的PETN特性黏数达0.65～0.85 dL/g;钛系催化剂的催化活性优于锑系催化剂,且添加比例小,添加量为8～50μg/g时,即可得到高特性黏数的PETN。     

成核剂对PE-HD改性PE-UHMW性能的影响

研究了硬脂酸钙、滑石粉、山梨醇类成核剂(TH-3998)及自制稀土类复合成核剂(REC)对高密度聚乙烯(PE-HD)改性超高相对分子质量聚乙烯(PE-UHMW)性能的影响。结果表明,REC对PE-UHMW/PE-HD体系的性能影响显著。当其含量为0.4%时,拉伸强度为31.5MPa,比不含成核剂时的27.5MPa增加了14.5%;冲击强度为153.7kJ/m2,比不含成核剂时的136.0kJ/m2增加了13.0%,与纯PE-UHMW的性能相差无几;摩擦系数由不含成核剂时的0.19894降低到了0.18121;SEM表明其结晶形态为摺叠扭曲形波浪起伏结构。