丙烯酸／丙烯酸羟丙酯／不饱和磺酸二元共聚物合成及阻垢性能

以丙烯酸、丙烯磺酸、磺化马来酸丙烯酰胺、２－丙烯酰胺－２－甲基丙烷磺酸、丙烯酸羟两酯为原料，过硫酸铵为引发剂制备了一系列三元共聚物，并研究了其阻垢分散性能。结果表明，按一定配比制备的共聚物对碳酸钙垢或磷酸钙垢等具有优异的阻垢分散性能。     

丙烯酰胺共聚反相胶乳

本文概述了自由基聚合制备聚丙烯酰胺和共聚物工艺的发展，讨论了影响聚丙烯酰胺结构与性能的合成及工艺因素，特别对丙烯酰胺反相乳液聚合进行了详细的论述。     

共聚单体对NIPA共聚物低临界溶液温度的影响

通过添加不同量的丙烯酰胺，Ｎ，Ｎ－二甲基丙烯酰胺和丙烯酸（在ｐＨ值为９的缓冲液中成盐）制备了不同品种的Ｎ－异丙基丙烯酰胺共聚物，发现其低临界溶液温度随这些单体用量的增加而增加，增加幅度与共聚单体的亲水性成正比。     

ZnCl_2-阳离子聚丙烯酰胺类复合絮凝剂净水性能研究

以阳离子聚丙烯酰胺、ZnCl_2、醋酸为原料,制备了ZnCl_2-阳离子聚丙烯酰胺类复合絮凝剂。以除油率为主要考察指标,探讨了制备过程中,阳离子聚丙烯酰胺相对分子质量、氯化锌与阳离子聚丙烯酰胺质量比、复合絮凝剂加药浓度对除油效果和原油脱水效果的影响,实验结果表明,锌基复合絮凝剂的最佳制备条件:ZnCl_2质量分数为30%、阳离子聚丙烯酰胺质量分数为2%。与铝盐复合絮凝剂相比,ZnCl_2-阳离子聚丙烯酰胺类复合絮凝剂具有除油效率高、污泥体积小、不影响原油脱水等特点。     

一类超支化聚合物单体的制备

本文利用酰氯与胺基反应生成酰胺的反应,制备出乙二胺双丙烯酰胺、丙二胺双丙烯酰胺,丁二胺双丙烯酰胺这一类单体,并且傅立叶红外光谱和核磁共振光谱仪对这些单体进行了表征,为制备超支化聚合物单体提供了方法。     

生化法丙烯酰胺单体合成聚丙烯酰胺的评价试验

通过比较生化法丙烯酰胺单体（ＡＭ）和化学法丙烯酰胺单体在同等条件下，在实验室及中试生产线上进行制备聚丙烯酰胺（ＰＡＭ）产品的试验，最终经产品质量分析，对生化法丙烯酰胺单体的实际生产应用进行了评价。并观察了其聚合产品的絮凝应用效果。     

一种复合型污泥脱水剂的制备方法——王有华，杨丽.CN 101239774

本发明涉及一种复合型污泥脱水聚合物的制备方法。它是以阴离子或非离子聚丙烯酰胺、甲醛、有机胺、亚硫酸氢钠、新鲜水为原料，辅以少量助剂，在一定的温度下反应而得到的磺甲基聚丙烯酰胺和胺甲基聚丙烯酰胺为主要成分的胶体水溶液；     

改性法制备阳离子聚丙烯酰胺的研究

介绍了用聚丙烯酰胺改性制备水溶液胶体的阳离子聚丙烯酰胺的实验过程，并对其进行了性能检测和实际应用效果实验。     

温度感应型微胶囊的制备研究

以温敏物质N-异丙基丙烯酰胺和丙烯酰胺为壁材,环己烷为分散介质,采用乳液聚合法制备温度感应型微胶囊。通过单因素试验研究了乳化剂的量、搅拌速度、物料比及交联剂的量对微胶囊制备的影响,确定了微胶囊制备工艺条件的最佳范围。     

中国专利

一种羧甲基纤维素钠/阳离子聚丙烯酰胺包装薄膜及其制备方法本发明提供一种羧甲基纤维素钠/阳离子聚丙烯酰胺包装薄膜及其制备方法。制备方法为:1)将均不含气泡的羧甲基纤维素钠水溶液和阳离子聚丙烯酰胺水溶液混合,将混合溶液先搅拌再静置,至混合溶液脱除气泡得到混合体系A,其中,阳离子聚丙烯酰胺的质量为羧甲基纤维素钠和阳离子聚丙烯酰胺总质量的2%~10%;2)将混合体系A烘干,得到羧甲基纤维素钠/阳离子聚丙烯酰胺包装薄膜。     

高残炭酚醛树脂的研究进展

综述了高残炭酚醛树脂:硼改性、钼改性、芳基酚改性及硅氮烷改性酚醛树脂,酚三嗪树脂,苯并恶嗪树脂的研究进展。上述改性后的酚醛树脂,耐热性显著提高。这些研究为耐烧蚀材料的应用提供了理论依据,为新一代的高残炭树脂的开发提供了方向。最后指出酚醛树脂在今后的耐烧蚀材料领域仍然会发挥重要的作用。     

高耐热EP的开发及其应用研究进展

在介绍环氧树脂（EP）基本性能的基础上,对新型耐高温EP的开发方法进行了综述,如：有机小分子共混改性、有机树脂共混改性、纳米粒子共混改性、化学合成法制备新型耐热EP等,同时总结了高耐热EP在耐磨材料、涂层涂料、电子封装材料等不同领域中的应用研究,并展望了其未来的发展方向。     

溶剂型丙烯酸树脂的研究进展

本文介绍了溶剂型丙烯酸树脂的发展情况及其特点,详细论述了溶剂型丙烯酸树脂的品种发展现状。另外对该产品的研究动向展开了系统的讨论,如高固体份丙烯酸树脂、SAC系列以及有机硅改性丙烯酸树脂等,并阐述了基团转移聚合方法和纳米技术对溶剂型丙烯酸树脂性能的影响。简要介绍了各类溶剂型丙烯酸树脂的在涂料工业中的应用,并对后期低污染高性能产品的开发作了展望。     

我国高吸水树脂发展中存在的问题与趋势

从水资源紧缺的角度出发,对中国高吸水树脂发展中存在的产品开发与高吸水树脂的基础理论研究脱节、产品开发与生产工艺研究和优化的脱节、产品开发与产品应用研究脱节、高吸水树脂的性能测试缺乏统一的规范的方法等4个方面问题进行了分析,对今后的研究发展进行了展望并提出建议。     

Preparation of nanocomposites from biobased thermoset resins by UV-curing

Biobased thermoset resins were irradiated with ultraviolet (UV) radiation in the presence of photoinitiators. Three different resins were evaluated—two resins were based on soybean oil and one was based on lactic acid. The cross-linking behaviour of these resins was characterized by real-time FTIR and Soxhlet extraction. All of the resins cured rapidly and formed rigid materials with a high degree of conversion. The cross-linked resins were characterized by mechanical testing, thermogravimetric analysis (TGA) as well as dynamic-mechanical thermal analysis (DMTA). The resins were reinforced with layered silicate, in order to form nanocomposite structures. The resulting composites were characterized by DMTA and tensile testing.     

Synthesis and Properties of High Oil-Absorbing Resins with Long Chain by High Internal Phase Emulsions as Template

Synthesis of porous high oil-absorbing resins by high internal phase emulsions (HIPEs) as template was described. Lauryl methacrylate (LMA), hexadecyl methacrylate (HMA), and steary methacrylate (SMA) with long-chain alkyl groups were chosen as monomers to prepare high oil-absorbing resins. Effects of different factors including initiator, crosslinker, emulsifying agent, porogen, reaction temperature, reaction time, and volume ratio of water/oil on oil-absorbing capacity were discussed. The maximum capacities of the high oil-absorbing resins prepared by LMA, HMA, and SMA were 24 g.g^?1, 32 g.g^?1, and 34 g.g^?1 in trichloromethane, respectively. The oil-absorbing capacities of these resins remain constant after three times desorption and absorption processes.     

HDPE生产工艺进展

分析了高密度聚乙烯(HDPE)生产工艺现状和技术特点,淤浆聚合工艺是我国HDPE最主要的生产技术。利用釜式淤浆法工艺特点可开发双峰或多峰产品以实现其机械性能和加工性能的平衡;利用环管淤浆法工艺特点开发高性能管材料和宽相对分子质量分布产品;利用气相法工艺单线生产能力大的特点稳定生产通用产品;利用溶液法工艺产品均一性好、切换容易的特点开发高附加值特色产品。建议结合装置特点开发高性能HDPE。     

三元共聚合成高吸水性树脂的研究

以丙烯酸,丙烯酰胺和2－丙烯酰胺－2－甲基丙磺酸为原料,为硫酸钾为引发剂,N,N－亚甲基双丙烯酰胺（Bis)为交联剂,用水溶液法合成了一系列高吸水性树脂,考察了合成条件对树脂吸水率的影响。     

Optimierung cycloaliphatischer Epoxidharzsysteme mit Siliconkautschuk

The high crosslink density of epoxy resins with high glass transition temperature, high strength, etc., used in many high-performance applications, causes the undesired brittleness of these materials and, hence, internal stress. For the optimization of their properties, cycloaliphatic epoxy resins were modified with elastomeric silicone. Two different modifying concepts, i. e. dispersion and mixing, were characterized using mechanical testing, dynamic-mechanical analysis and scanning electron microscopic studies as well as measurement of the expansion coefficient and the shrinkage. The modification with silicone, in general, reduces the modulus and improves the fracture toughness of the resins. Due to the two-phase structure of the resins prepared by the dispersion method, the glass transition temperature of the epoxy matrix is practically not depressed, and the tendency to enhance stress is less marked compared to the mixing method.     

Phosphorous‐containing epoxy resins from a novel synthesis route

The ? P(O)‐H in 9,10‐dihydro‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO) was used as an active group to react with the carbonyl group in 4,4′‐dihydroxybenzophenone (DHBP) to result a novel phosphorous‐containing biphenol compound (DOPO‐2OH). Phosphorous‐containing epoxy resins were therefore obtained from reacting DOPO‐2OH with epichlorohydrin or with diglycidylether bisphenol A. The synthesized compounds were characterized with FTIR, ¹H and ³¹P NMR, elemental analysis, and epoxide equivalent weight titration to demonstrate the their chemical structures. Cured epoxy resins were prepared via thermal curing the epoxy resins with various curing agents. Thermal analysis results (differential scanning calorimetry and thermogravimetric analysis) revealed that these cured epoxy resins exhibited high glass transition temperatures and high thermal stability. High char yields at 700°C and high LOI (limited oxygen index) values were also found for the cured epoxy resins to imply that the resins were possessing high flame retardancy. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 1697–1701, 2002