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A novel method for making ultra-fine metal fibers and particles

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Science China Chemistry 2014年第7期57卷 1053-1056页

作者： CHEN Gang ZHANG XiaoHong qiao jinliang College of Materials Science and Engineering Beijing University of Chemical Technology SINOPEC Beijing Research Institute of Chemical Industry

A novel method based on plastic processing and equipment for preparing ultra-fine metal fibers and particles is *** this new method,metal fibers and particles can both be produced on the same equipment and the surfaces of the fibers and particles can be protected from oxidation by the polymers or solvents during the preparation ***-alloy powders with lower melt point were filled into polymer by an extruder,followed by a die-drawing process at a temperature lower than the melt temperature of the metal *** fibers or particles were obtained after the polymer matrix was washed *** alloy fibers can be obtained when a polymer that strongly interacts with metal alloy,such as a special polyvinyl alcohol with a low alcoholysis degree,is used as the polymer ***-alloy particles can be obtained when a polymer with weak interaction with metal alloy,such as polyethylene(PE),is used as the polymer *** on the principle of this new method,it is possible to produce finer or even nano-sized metal fibers and particles with higher melting points.

关键词： metal fiber metal particle polymer die drawing metal alloy powder

Exfoliated sodium-montmorillonite in nitrile butadiene rubber nanocomposites with good properties

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Chinese Science Bulletin 2009年第5期54卷 877-879页

作者： WANG QingGuo ZHANG XiaoHong qiao jinliang Key Laboratory of Rubber-plastics of Ministry of Education Qingdao University of Science and Technology Qingdao 266042 China SINOPEC Beijing Research Institute of Chemical Industry Beijing 100013 China

We prepared and utilized a novel ultrafine fully-vulcanized powder nitrile butadiene rubber (UFPNBR)/ sodium montmorillonite (Na-MMT) nanocompound powder, in which nanoscale UFPNBR particles and nanoscale platelets of Na-MMT were isolated and stuck each other. When the UFPNBR/Na-MMT nano-compoud powder was mixed with crude nitrile butadiene rubber (NBR), UFPNBR particles could be easily dispersed in NBR matrix because of good compatibility, and nanoscale Na-MMT was also dis-persed well in NBR matrix due to the carrier aidance of UFPNBR particle, thus the NBR/UFPNBR/Na- MMT ternary nanocomposites adapting to industry was fabricated. X-ray diffraction test and scanning electron microscopy (SEM) observation indicated that nanoscale Na-MMT was dispersed well in NBR matrix. Compared with NBR/Na-MMT binary composites, NBR/UFPNBR/Na-MMT ternary nanocompo-sites have shorter vulcanization time and higher flame retardancy due to the exfoliated Na-MMT in NBR matrix.

关键词：橡胶纳米复合材料 Na-蒙脱土阻滞性丁晴橡胶

Different influences of nucleating agents on crystallization behavior of polyethylene and polypropylene

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Science China Chemistry 2012年第6期55卷 1140-1147页

作者： JIANG HaiBin ZHANG XiaoHong qiao jinliang College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China SINOPEC Beijing Research Institute of Chemical Industry Beijing 100013 China

The crystallization behavior of polyethylene (PE) and polypropylene (PP), including the neat ones and the ones nucleated with the same nucleating agent (NA), was studied by DSC. It was found that the nucleating agent decelerated the PE nonisothermal crystallization process. NA did enhance the nucleating rates for both PE and PP, but the linear growth rate dominated the volumetric growth rate for PE, and the volumetric growth rate dominated the overall crystallization rate. That is why PE nucleated with NA had a slower overall crystallization rate than the neat one.

关键词： nucleating agent crystallization polyethylene polypropylene

Effect of polyamide on selectivity of its supported Raney Ni catalyst

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Science China Chemistry 2016年第6期59卷 776-780页

作者： Haibin Jiang Shuliang Lu Xiaohong Zhang Baoliang Tian Hui Peng Wei Dai jinliang qiao SINOPEC Beijing Research Institute of Chemical Industry Beijing 100013 China

A newly-developed polyamide supported Raney Ni catalyst, which is suitable for use in fix-bed reactions with high selectivity, was studied in this paper. Selective hydrogenation of acetone to isopropanol was chosen as a probe reaction. It has been found that clean preparation of isopropanol could be achieved, that is to say, the two main byproducts(isopropyl ether and methyl-iso-butyl carbinol) could be eliminated with the newly-developed polyamide supported Raney Ni catalyst. The elimination of these side reactions was attributed to the adsorption effect of polyamide support and a model was proposed. The proposed model was further proved by hydroamination reaction of acetone. According to this model, catalyst support can play an important role in chemical reactions. Different products could be produced when different catalyst support is used, the main reaction and side reactions can even be reversed sometimes when the chemicals, active component of catalyst and reaction condition are the same. This model could help to improve catalytic selectivity of many Raney metal catalysts used routinely in chemical and oil refining industry, and is also useful for hydrogenation reactions in pharmaceutical and food industry.

关键词： polyamide Raney Ni acetone

Novel pH tunable Grafting Polyampholytes complex micelles: design, characterization and biological significance

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Novel pH tunable Grafting Polyampholytes complex micelles: d...

2015年全国高分子学术论文报告会

作者： Mingming Guo jinliang qiao SINOPEC Beijing Research Institute of Chemical Industry

A series graft copolymers consisting of poly（ethyleneimine）（PEI） main chains and AMPS: 2-Acrylamido-2-methylpropanesulfonic Acid（AMPS） or 2-Acrylamido-2-methylpropanesulfonic Acid Ammonium Salt（AMPSa） side chains has been synthesized. Thus, PAMPS side chains were grafted from the PEI backbone by treating PEI with the catalyst in the presence of AMPS or AMPSa in water at 70 C. The self assembling process were demonstrated via p H change based on the NMR spectra. The novel polyampholytes obtained displayed isoelectric points（IP）. The IP could be tuned by changing the ratio of the components. Under acidic conditions, polyion complex micelles（PIC） were formed between the positively charged PEI backbone and the negatively charged biopolymer bovine serum albumin（BSA）. Under basic conditions, PICs were formed between negatively charged PAMPS side chain and the positively charged enzyme lysozyme. The PICs phase separated in both cases to form stable micelles. The proteins could be released from the PIC micelles by changing the p H. Thus, the PIC micelles may be useful in the p H-triggered delivery of biological molecules, protein purification and separation, and the nanoreactor of the enzyme.

关键词： Polyampholytespolyion comple xmicelles poly(ethyleneimine) lysozyme

来源： cnki会议评论

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我国高分子材料产业转型发展的思考

石油化工 2015年第9期44卷 1033-1037页

作者：乔金樑中国石化北京化工研究院北京100013

介绍了国内三大合成材料的生产现状,提出了国内市场存在的主要问题,我国高分子材料产业经过持续多年的高速发展,迎来了转型发展期。通过分析高分子材料的研究现状,阐述了未来我国高分子材料的技术创新方向,我国有创新能力,高分子材料技... 详细信息

介绍了国内三大合成材料的生产现状,提出了国内市场存在的主要问题,我国高分子材料产业经过持续多年的高速发展,迎来了转型发展期。通过分析高分子材料的研究现状,阐述了未来我国高分子材料的技术创新方向,我国有创新能力,高分子材料技术领域也留有足够创新空间,可以通过对现有高分子产品的高性能化、高性能"绿色"高分子新材料的开发和"绿色"高端聚合物新制品的开发,实现我国高分子材料产业向创新驱动发展转型,实现产品的"绿色"和高端化以及市场的国际化。

关键词：高分子材料转型发展绿色材料高性能

Interface and properties of epoxy resin modified by elastomeric nano-particles

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Science China Chemistry 2005年第2期48卷 148-155页

作者： HUANG Fan1, LIU Yiqun1, ZHANG Xiaohong1, GAO Jianming1, SONG Zhihai1, TANG Banghui1, WEI Genshuan2 & qiao jinliang1 1. SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China 2. Institute of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100080, China Correspondence should be addressed to qiao jinliang (email: jqiao@***.) SINOPEC Beijing Research Institute of Chemical Industry Beijing China Institute of Applied Chemistry College of Chemistry and Molecular Engineering Peking University Beijing China

Study on a new composite of epoxy resin/elastomeric nano-particles (ENP) is re- ported in this paper, which shows that, in comparison with pure epoxy resin and epoxy toughened with CTBN, the composites of epoxy resin/carboxylic nitrile-butadiene ENP and epoxy resin/styrene butadiene vinyl-pyridine ENP possess both higher toughness and heat resistance. Both ENPs used in the study have an average size of less than 100 nm. Study on the epoxy network’s morphology and interface properties suggests that due to the chemical reaction be- tween ENP and epoxy resin and more hydrogen bonds between nitrile groups of the rubber and hydroxyl groups of the epoxy resin, stronger interaction at the larger interface may lead to the observed excellent properties of the epoxy resin toughened with ENP.

关键词： elastomeric nano-particles, epoxy resin, carboxylic nitrile-butadiene rubber, styrene butadiene vinyl-pyridine rubber, interface.

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纳米级橡胶新材料的制备及其应用

化工新型材料 2005年第2期33卷 46-51页

作者：张师军乔金樑中石化北京化工研究院北京100013

主要论述了纳米级粉末橡胶包括丁苯橡胶、羧基丁苯橡胶、丁腈橡胶、羧基丁腈橡胶、丙烯酸酯橡胶、丁吡橡胶等的制备技术,并探讨了此类纳米橡胶在热塑性塑料改性、热固性塑料改性和热塑性弹性体方面的应用技术。此技术已申报了23项中国... 详细信息

主要论述了纳米级粉末橡胶包括丁苯橡胶、羧基丁苯橡胶、丁腈橡胶、羧基丁腈橡胶、丙烯酸酯橡胶、丁吡橡胶等的制备技术,并探讨了此类纳米橡胶在热塑性塑料改性、热固性塑料改性和热塑性弹性体方面的应用技术。此技术已申报了23项中国发明专利、6项美国专利,其中申请美国的母专利已授权USP。

关键词：纳米级改性粉末橡胶纳米橡胶羧基丁腈橡胶丙烯酸酯橡胶热塑性弹性体中国 USP 羧基丁苯橡胶

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聚烯烃结晶成核剂的研究进展

石油化工 2011年第10期40卷 1027-1036页

作者：蒋海斌张晓红乔金樑中国石化北京化工研究院北京100013

概述了聚丙烯成核剂和聚乙烯成核剂的发展概况,包括有机成核剂、无机成核剂和高分子成核剂,其中,以有机成核剂为主;介绍了聚丙烯α晶型成核剂和β晶型成核剂成核机理的研究进展以及结晶动力学的研究进展;分析了聚烯烃成核剂的发展方向,... 详细信息

概述了聚丙烯成核剂和聚乙烯成核剂的发展概况,包括有机成核剂、无机成核剂和高分子成核剂,其中,以有机成核剂为主;介绍了聚丙烯α晶型成核剂和β晶型成核剂成核机理的研究进展以及结晶动力学的研究进展;分析了聚烯烃成核剂的发展方向,认为超细或纳米尺度成核剂、原位成核技术以及利用超细粉末橡胶提高成核效率是聚烯烃成核剂的重要发展方向。

关键词：聚烯烃聚丙烯聚乙烯成核剂结品