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MA-AMPS-AMPP共聚物的合成及其阻垢效果 总被引:21,自引:3,他引:18
以水为溶剂,过氧化物为引发剂,马来酸酐(MA)、2-丙烯酰胺-2-甲基丙基磺酸(AMPS)、2-丙烯酰胺-2-甲基丙基膦酸(AMPP)为单体合成了三元共聚物。探讨了该共聚物的阻垢效果及以聚合率与单体配比、引发剂用量和组成、反应温度、时间等之间的关系,并考察了水质条件变化对共聚物阻垢性能的影响。结果表明,该共聚物具有很好的阻CaCO3垢和Ca3(PO4)2垢能力。 相似文献
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以丙烯酸 (AA)、2 -丙烯酰胺 - 2 -甲基丙磺酸 (AMPS)和次亚磷酸钠为单体 ,水为溶剂 ,过硫酸铵为引发剂合成了含磷丙烯酸 - AMPS共聚物阻垢分散剂 (代号 YSS-94)。讨论了单体配比、次亚磷酸钠用量、引发剂用量、反应温度及反应时间对共聚物阻垢性能的影响 ,确定了最佳配比和工艺条件 ,并对产品的阻垢分散性能进行了评价。结果表明 ,该共聚物是一种性能优异的高效水质稳定剂 相似文献
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马来酸酐水溶液共聚体系的研究 总被引:3,自引:0,他引:3
选择不同配比和用量的 2 丙烯酰胺基 2 甲基丙基磺酸 (AMPS)、2 丙烯酰胺基 2 甲基丙基膦酸 (AMPP)、丙烯酸 (AA)、丙烯酰胺 (AM)、丙烯酸甲酯等 5种聚合单体和过硫酸盐 -Fe2 + 、过氧化氢 -Fe2 + 、过硫酸盐 -次磷酸盐、过氧化氢 -次磷酸盐等 4组引发体系与马来酸酐共聚合成一系列共聚物 ,并对其性能进行分析比较。结果表明 ,AMPS可作为此共聚体系第二单体 ,在所考察的第三单体、引发体系中 ,以AMPP、过氧化氢 次磷酸盐为最佳。当引发剂用量为单体总质量的 10 % [以次磷酸盐的质量计 ,m(过氧化氢 )∶m(次磷酸盐 ) =1.0∶1.2 ],m(MA)∶m(AMPS) =8∶6时合成的共聚物聚合率达 93.41% ,在加药质量浓度分别为 12mg/L和 18mg/L条件下 ,该共聚物对CaCO3 和Ca3(PO4 ) 2 垢的阻垢率分别为 6 6 .2 9%和 10 0 % ;在相同引发剂用量和加药质量浓度下 ,m(MA)∶m(AMPS)∶m(AMPP) =10∶4∶1时合成的三元共聚物的聚合率为 92 80 % ,对CaCO3和Ca3(PO4 ) 2 垢的阻垢率分别为 97.6 1%和 95 .92 % 相似文献
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以衣康酸(IA)、马来酸(MA)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,以过硫酸铵为引发剂,以水为溶剂,通过自由基聚合合成了一种新型的三元共聚物,探讨了单体配比、聚合温度、引发剂用量、聚合时间等合成条件对阻垢性能的影响,确定了最佳的合成条件为:单体配比n(IA)∶n(MA)∶n(AMPS)=1∶1∶1,聚合温度80℃,引发剂占单体质量分数的5%,聚合时间2h;用红外分光光度仪分析证明得到了预期的产物结构,并测定了产物的特性黏度和固含量。通过静态法对三元共聚物的阻垢性能进行评价,在加剂量为50mg/L时阻碳酸钙率最佳可达93.6%,是一种性能优异的阻垢剂。 相似文献
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Poly(acrylamide‐co‐2‐acrylamido‐2‐methylpropane sulfonic acid) hydrogels were synthesized using gamma‐radiation‐initiated polymerization. The progress of copolymerization and crosslinking was observed by viscosity measurement on reaction mixtures subjected to varying radiation doses. The copolymer gels were characterized by differential scanning calorimetry, X‐ray diffraction, scanning electron microscopy, infrared spectroscopy, and elemental analysis. The swelling behavior and other properties of the gels were found to be very similar to those of poly(acrylamide‐co‐2‐acrylamido‐2‐methylpropane sulfonic acid) hydrogels synthesized using conventional free‐radical initiation in the presence of crosslinkers. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 1322–1330, 2003 相似文献
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The rate of conversion of the monomers and crosslinker in the formation of a novel semi‐interpenetrating poly(ethylene glycol)/ poly(2‐acrylamido‐2‐methylpropane sulfonic acid‐co‐N‐isopropylacrylamide) copolymer hydrogel was determined by using 1H‐NMR spectrometry. It was established that poly(ethylene glycol) does not participate in the polymerization reactions and that crosslinking by methylenebisacrylamide occurs predominantly in the early stages of copolymer chain growth. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 91: 3635–3641, 2004 相似文献
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A humic acid graft copolymer possessing both water‐retention and dispersing properties in cement slurry was synthesized by grafting lateral chains of 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS®), N,N‐dimethylacrylamide (NNDMA), and acrylic acid (AA) onto a backbone of humic acid using aqueous free radical polymerization. The graft copolymer is composed of 20 wt % humic acid backbone and 80 wt % graft chain (molar ratio AMPS/NNDMA/AA = 1 : 0.31 : 0.03), it exhibits a Mw of 323 kDa and is highly anionic in cement pore solution. The influence of this specific molecular design on cement flow properties is unraveled. When tested at 200°C, the graft copolymer achieved very low cement fluid loss values (~50 mL) at low rheology. This behavior differentiates it from most common synthetic high temperature fluid loss additives which excessively viscosify cement slurries. The working mechanism of the graft copolymer was found to rely on adsorption onto the surface of hydrating cement. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 相似文献
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低相对分子质量AMPS/AA二元共聚物的合成及性能研究 总被引:6,自引:0,他引:6
以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酸(AA)为原料合成了2种低相对分子质量AMPS/AA二元共聚物;分别评价了共聚物用工业循环冷却水阻垢剂、钻井液降粘剂的性能。 相似文献
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A new water‐soluble methacrylate/2‐acrylamido‐2‐methylpropane sulfonate copolymer (PMAMP) was synthesized and evaluated as a dispersion agent for cement particles. PMAMP was prepared from methacrylic acid and 2‐acrylamido‐2‐methylpropane sulfonic acid (AMP). The structure of the prepared polymer was verified by its NMR and IR spectra. The dispersing properties of PMAMP were evaluated by a minislump test on cement pastes. The test results indicated that this copolymer could disperse the cement particles and improve the minislump of cement pastes. Compared with a commercial superplasticizer (sulfonated naphthalene formaldehyde condensates), PMAMP performed better in enhancing the fluidity of the cement pastes. The polymer with about 40–50% AMP and a weight‐average molecular weight of about 5 × 104 was most effective in dispersing cement particles and promoting the fluidity of cement pastes. Nevertheless, PMAMP with a higher AMP content or a higher molecular weight appeared to cause less slump loss. This was related to the interaction of this admixture with the cement particles and its adsorption behavior onto the cement particles. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 2490–2496, 2006 相似文献