共查询到19条相似文献,搜索用时 156 毫秒
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本文综述以腐植酸为主要原料复配而成的腐植酸水质稳定剂的性能与应用情况。通过化肥厂、发电厂及室内应用试验证明,腐植酸水质稳定剂具有缓蚀、阻垢、杀菌灭藻等多种功能,与磷系药剂相比,成本低,使用方便,无毒,无二效污染,水的浓缩倍率高等优点,其经济效益、社会效益和环境效益显著,具有广阔和应用价值。 相似文献
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水质稳定剂的耐氧化能力由大列小的顺序为:PAA>HEDP>ATMP和BTA>MBT;在每天杀生4h的条件下,1.0mgCl2/L的杀生剂对水质稳定剂配方“HEDP—PAA—BTA”的阻垢缓蚀效果几乎没有影响。 相似文献
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新型水质稳定剂的应用苗延民(吉化化肥厂吉林省吉林市,132021)我厂循环水系统自1982年开车以来一直使用传统的六偏磷酸钠系列药剂,取得了一定的效果。但从近年换热器拆检情况看,属C级的换热器比率有所增加,个别设备内有较大软瘤生成,菌类繁殖较快。同时... 相似文献
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目前市场上的复合型水质稳定剂价格普遍较高,对于装机容量小于100MW的火电厂来说,在选择水质稳定剂上,因投资较大,故选择非常慎重.不敢大胆购买。作者通过数学模型和实验数据,对使用水质稳定剂的经济效益进行了比较分析,从而论证了“产出大于投入”的观点。 相似文献
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评定了PMAM水质稳定剂的阻垢、缓蚀性能。其阻碳酸钙垢、磷酸钙垢及硫酸钙垢的效果分别达96.7%、95.8%和97.2%;缓蚀率达83.9%。探讨了PMAM的阻垢缓蚀机理。并将PMAM应用于甘肃白银稀土公司烧碱厂的循环冷却水,现场测得其阻垢(主要指钙垢)效果为90.2%。以上结果表明了PMAM水质稳定剂具有优异的阻垢、缓蚀性能和广泛的工业应用前景。 相似文献
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水质稳定剂TJ-401的合成及其缓蚀阻垢分散性能研究 总被引:1,自引:0,他引:1
以水为溶剂,采用过氧化物-次磷酸盐为引发体系,用马来酸酐(MA)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)、丙烯酸(AA)为单体在水相中合成了四元共聚物TJ-401水质稳定剂。讨论了单体配比、引发剂用量,反应温度等条件对产物缓蚀阻垢分散性能的影响.确定了TJ-401的合成工艺。结果表明:水质稳定剂TJ-401的性能较好,具有优异的阻碳酸钙垢、阻磷酸钙垢、分散三氧化二铁等阻垢分散性能及缓蚀性能,且阻碳酸钙垢性能和缓蚀性能优于TJ-301。 相似文献
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Somip Borphukan Maitrayee Saikia Urmilla Baruah Arvind Gautam Shashi D. Baruah Prakash J. Saikia 《应用聚合物科学杂志》2019,136(39):47994
The emulsion copolymerization of ethylene with butyl methacrylate (BMA) was carried out in an aqueous medium at 60 °C under moderate reaction conditions. The polymer system is well controlled with a linear increase in the molecular weight (Mn) versus ethylene feed pressure and narrow molecular weight distributions (>1.36) were observed throughout the copolymerization reaction. The spectroscopic analyses confirm the presence of acrylate functional as well as methylene group in the synthesized poly(ethylene-co-BMA) copolymer. Morphological behavior of poly(ethylene-co-BMA) has been studied using SEM and TEM analyses. Thermal stability of the copolymers was investigated by thermogravimetric analysis and it was observed that the copolymer is stable up to 380 °C. X-ray diffraction analysis confirmed the amorphous behavior of poly(ethylene-co-BMA). Dynamic light scattering measurement confirms the formation of poly(ethylene-co-BMA) nanoparticles. The particle size of copolymer nanoparticles were in the range of 85–108 nm with low polydispersity indexes (>0.2). The viscous and the elastic property of the copolymer were investigated and established that at high temperature elastic behavior predominant over viscous effect. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47994. 相似文献
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高效钙锌复合热稳定剂在硬质PVC中的应用 总被引:5,自引:0,他引:5
通过刚果红法、热烘法、加速紫外老化试验研究了合成的钙锌复合稳定剂在硬质PVC中的热稳定性和耐候性,研究了钙锌皂质量比对稳定性能的影响,并与几种进口的热稳定剂作比较。结果表明,合成的钙锌复合稳定剂钙锌皂较合适的质量比为6:4;195℃下其刚果红变色时间为27min,400h加速紫外老化后拉伸强度和伸长率保持率分别为85,7%和75%,用于硬质PVV中综合稳定性能较好。 相似文献
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Polyanhydrides are found to be useful in drug delivery systems; however, these aliphatic polyanhydrides are also unstable under humidity and temperature (greater than 0°C) for their low toxicity and surface eroding mode of drug release. In this research, poly(sebacic anhydride) was synthesized for a stability and depolymerization study in high humidity a surrounding temperature of 35°C. According to the results from gel permeation chromatography, IR spectrophotometry, and differential scanning calorimetry investigations, it was found that both self‐depolymerization and hydrolysis mechanisms existed during the depolymerization process for poly(sebacic anhydride) and they can be monitored directly. These results were further compared with previous research in a depolymerization study of polyanhydrides in a vacuum and in buffer solution. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 1423–1429, 2003 相似文献
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钢铁废水回用作循环冷却水补水试验研究 总被引:1,自引:0,他引:1
将钢铁废水预处理后回用作循环冷却水系统补水,是钢铁企业水资源优化配置的重要途径.运用水质稳定理论,通过实验室静态研究和中试研究,有针对性地研究了典型水质稳定剂的缓蚀与阻垢性能,筛选出了经济、高效和环境友好型水质稳定配方:HEDP、HB901和TS801(质量比4:5:1),有效地解决了高浓缩倍数下循环水系统的腐蚀、结垢和微生物滋生问题,并于2004年11月在石家庄钢铁公司建立了示范工程,在实现环境效益和社会效益的同时,预计全厂可节约水质稳定费用150万元/a. 相似文献