共查询到19条相似文献,搜索用时 133 毫秒
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建国50年来我国乳液聚合技术研究开发与工业生产成就及现状 总被引:5,自引:0,他引:5
综述了建国50年来我国乳液聚合合成橡胶、合成树脂及合成聚合物聚液工业从无到有,由小到大,由弱到强的发展历程,介绍了我国乳聚合新产品、新技术的开发以及乳液聚合物与聚合物乳推广应用所取得的伟大成就。 相似文献
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聚合物乳液中残留单体的气相色谱测定 总被引:2,自引:0,他引:2
聚合物乳液是由40—60%的平均直径在0.08—0.3μm液滴的胶体体系组成。残留单体的存在影响产品质量并污染环境,必须进行控制和检测。本方法是将聚合物乳液用二甲基甲酰胺(DMF)溶解为均相溶液后,直接进样测定。通过经常更换和清洗汽化室中的玻璃插入管及控制汽化室温度,可避免聚合物对色谱柱的污染。 相似文献
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涂料用含氟聚合物乳液的研究和应用 总被引:21,自引:0,他引:21
含氟聚合物乳液因具有优异的表面特性、耐候性和环境友好性,可望在高耐候涂料和特殊性能涂料领域获得广东的应用。本文对含氟聚合物乳液的制血、性能、应用以及聚合物结构与性能间的关系进行了较详细的综述。 相似文献
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甲基丙烯酸环氧丙酯共聚物乳液的研究 总被引:9,自引:0,他引:9
研究了以甲基丙烯酸环氧丙酯作为活性单体,采用种子乳液聚合制备四元体系的核—壳结构共聚物乳液,用透射电子显微镜观察了乳胶粒的微观形态,并对其稳定性、流变性等进行了测试,考察了甲基丙烯酸环氧丙酯及其含量对乳液性能的影响. 相似文献
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Hangquan Li Eli Ruckenstein 《Journal of polymer science. Part A, Polymer chemistry》2001,39(6):757-764
Self‐compatibilization is a novel method for preparing compatibilized polymer blends via concentrated emulsion polymerization. In this method, two partially polymerized concentrated emulsions are mechanically mixed, and then they are subjected to complete polymerization. Some compatibilizers are generated at the interfaces between the two kinds of cells, which compatibilize the homopolymers generated simultaneously inside the cells. In particular, when a rigid polymer was blended in this manner with a flexible one, tough materials were obtained. This review describes various ways to generate such self‐compatibilized materials. © 2001 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 39: 757–764, 2001 相似文献
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Minghuan Shen Xiaohui Xu Yilin Wang Yajun Guo Minghong Fan Guorong Tan 《Journal of Dispersion Science and Technology》2013,34(8):1178-1182
The viscous properties, scanning electronic microscopy (SEM), and water/oil interfacial tension (IFT) of partially hydrolyzed polyacryamide (HPAM) and hydrophobically associating hydrolyzed polyacryamides modified with N‐dodecylacrylamide were studied with the objective of investigating the influence on destabilization of emulsions. As expected, the copolymers exhibit significant viscosity enhancing capacity and three‐dimensional network structures due to intermolecular hydrophobic associations, and also present high interfacial activities as the IFT decrease with increasing polymer concentration. As a result, the existences of copolymers increased both the viscosity of emulsions and the intensity of interfacial film, in which case slow down the diffusion of demulsifier molecules and enhance the stability of emulsions, finally, the separation of water from oil becomes more difficult. 相似文献
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三元复合驱碱/表面活性剂/聚合物模拟原油乳状液稳定动力学特性 总被引:2,自引:0,他引:2
基于两相分离的乳状液稳定模型,研究了三元复合驱模拟原油乳状液稳定动力学特性;通过液膜强度和油水界面张力探讨了碱/表面活性剂/聚合物对模拟原油乳状液稳定动力学特性的影响机理。 结果表明,乳状液稳定模型可以很好的评价乳状液的稳定性,并得到乳状液的稳定动力学特性;碱浓度小于900 mg/L有利于乳状液的稳定,碱浓度大于900 mg/L不利于乳状液的稳定;表面活性剂和聚合物浓度的增加使得形成的模拟原油乳状液更加稳定;模拟原油乳状液的稳定作用主要是通过碱、表面活性剂降低油水界面张力并增加油水界面膜强度,聚合物通过提高界面膜强度实现的,三者存在协同效应。 相似文献
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Synthesis and characterization of a novel fluorine-containing polymer emulsion with core/shell structure 总被引:2,自引:0,他引:2
A novel fluorine-containing polymer emulsion 4 with core/shell structure was synthesized in water phase by a two-stage emulsion polymerization technique using monomer 3 (i.e., 2-methacryloyloxyethyl perfluorooctanoate (MAEF)) reacting with the monomers such as butyl acrylate (BA), acrylic acid (AA) and styrene (ST). The monomer 3 was synthesized from the intermediate 2 (pentadecafluoro-octanoyl chloride) reacting with β-hydroxyethyl methacrylate (HEMA). Polymer film were prepared by coating emulsion 4 directly on a cleaned glass plate and allowed to dry at room temperature. Moreover, the characteristics of polymer film such as hydrophobicity, chemical resistance, surface composition, thermal stability, emulsion particle morphology, as well as the film-forming property were also studied. 相似文献
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Mitsuru Watanabe Toshiyuki Tamai 《Journal of polymer science. Part A, Polymer chemistry》2006,44(16):4736-4742
Acrylic polymer/silica organic–inorganic hybrid emulsions were synthesized by a simple method, that is, a conventional emulsion polymerization and subsequent sol–gel process, to provide water‐based coating materials. The acrylic polymer emulsions contained a silane coupling agent monomer, such as methacryloxypropyltriethoxysilane, to form highly solvent‐resistant hybrid films. On the other hand, the hybrid films from the surface‐modified polymer emulsions, in which the silane coupling agent was located only on the surface of the polymer particles and the particle core was not crosslinked, did not exhibit high solvent resistance. A honeycomblike array structure, which was derived from the polymer particles (diameter ≈ 50 nm) and the silica domain, on the hybrid film surfaces was observed by atomic force microscopy. The crosslinked core part and silane coupling agent containing the shell part of the polymer particles played important roles in attaining high solvent resistance. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 4736–4742, 2006 相似文献
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功能高分子材料制备的瓶颈问题是如何解决多重材料的相容性问题,传统的物理共混技术和聚合添加技术无法保证材料的稳定性及均一性。 Pickering乳液具有成本低、毒性小、环境友好、稳定性好、制备的多重材料结构稳定等优点,在制备功能高分子材料的应用中越来越受到人们的重视。 本文详细介绍了Pickering乳液在功能性高分子材料制备中的应用研究进展,提出了Pickering乳液聚合制备功能高分子材料面临的一些问题,并结合本课题组的研究方向,对其发展前景进行了展望。 相似文献
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Zhiqiang Zhang Jennifer L. Barber Stig E. Friberg Patricia A. Aikens 《Journal of Dispersion Science and Technology》2013,34(2):145-160
The phase diagram was determined of the system a fragrance oil, phenethyl alcohol, a commercial triblock copolymer, PE/L101, and water. The stability of emulsions containing 95 wt% water and various amounts of the fragrance and polymer was investigated both visually and with the aid of an optical microscope. The stability of the two-phase emulsions was explained through the interfacial behavior of the polymer and the density change of the oil phase. Double emulsions were found to form when the oil phase composition is close to that of the L2 phase with maximum water solubilization. 相似文献
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Lloyd. M. Robeson Robert. A. Berner 《Journal of Polymer Science.Polymer Physics》2001,39(11):1093-1106
Polymer blend technology has been one of the most investigated areas in polymer science in the past 3 decades. The one area of polymer blends that has been virtually ignored involves simple emulsion blends, although several articles have recently appeared that address film formation and mechanical characteristics. In this study, we investigated the mechanical property behavior of emulsion blends composed of low/high‐glass‐transition‐temperature polymers (where low and high mean below and above the test temperature, respectively). The emulsions chosen for this study had similar particle sizes, and the mixtures were rheologically stable. Two conditions were chosen, a binary combination of polymers that were thermodynamically immiscible and another system that was thermodynamically miscible. The mechanical property results over the entire composition range were compared with the predictions of the equivalent box model (EBM) with the universal parameters predicted by percolation theory. An array of randomly mixed and equal‐size particles of differing moduli was expected to show excellent agreement with theory, and the emulsion blends provided an excellent experimental basis for testing the theory. For the immiscible blend, the EBM prediction for the modulus showed excellent agreement with experimental results. With tensile strength, the agreement between the modulus and theory was good if the yield strength for the higher glass‐transition‐temperature polymer was employed in comparison with the actual tensile strength. The phase inversion point (where both phases were equally continuous) was at a 0.50 volume fraction of each component (based on an analysis employing Kerner's equation), just as expected for a random mixture of equal‐size particles. © 2001 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 39: 1093–1106, 2001 相似文献