共查询到20条相似文献,搜索用时 128 毫秒
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对乳化蜡的配方及乳化工艺条件进行了研究,当石蜡质量分数为10%~20%、氧化石蜡质量分数为3%,采用复合乳化剂硬脂酸与三乙醇胺(其质量比为5∶2,用量为7%),在85℃、800~1000r/min的条件下乳化20~30min可制得稳定性高、分散性好的乳化蜡。以此乳化蜡为原料,采用复合防锈剂,当防锈剂A与防锈剂C质量比为3∶1、加入量为6%时,可制得pH值为8~8.5、氨味小、半透明的防锈蜡,其主要性能与国外先进同类产品指标接近。 相似文献
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高效防锈底漆D—31 总被引:1,自引:0,他引:1
双组份环氧聚氨酯防锈底漆D-31有三个主要特点:(1)极好的防锈性能;(2)漆膜有高度的弹性和柔韧性,从而能适应基材的大形变;(3)优异的附着力。其主要用途除可作为严酷环境下的高效防锈、防腐蚀底漆外,还可用做聚氨酯的层间粘接性能改进剂。 相似文献
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采用水性环氧树脂乳液作为基料,水性改性胺作为固化剂以及环保型助剂等配制成双组分水性环氧防锈底漆。讨论了水性环氧固化剂、活性防锈颜料、流变剂及活性稀释剂对水性环氧防锈底漆性能的影响。 相似文献
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水性纳米改性苯丙防锈底漆的研制 总被引:1,自引:0,他引:1
本试验选用无皂聚合工艺制备的水性苯丙防锈乳液为基料,氧化铁红与三聚磷酸铝组成防锈体系,添加纳米SiO_2浆料,制备的水性纳米改性苯丙防锈底漆性能达到溶剂型醇酸防锈涂料的水平,并分析了乳液、防锈颜料、纳米SiO_2对水性苯丙防锈底漆性能的影响。 相似文献
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新型带锈防锈漆的研制 总被引:2,自引:1,他引:2
研制了一种新型带锈防锈漆,通过加入酸锌,氧化锌,三聚磷酸铝,铬酸钡等助剂,使金属带锈表面锈层磷化,钝化,形成连续,均匀,致密的保护层,加入0.05%-0.10%的钴锰催干剂,显著提高了漆膜的干燥速度,该带锈防锈漆制备工艺简单,成本低,长期贮存性能稳定,各项指标均符合国家标准。 相似文献
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Wax deposit properties are a significant concern in pipeline pigging during waxy crude oil transportation. In the present work, the impacts of flow conditions and oil properties on the wax precipitation characteristics of wax deposits are investigated. A flow loop apparatus was developed to conduct wax deposition experiments using four crude oils collected from different field pipes. The differential scanning calorimetry (DSC) technique was employed to observe the wax precipitation characteristics of crude oil and wax deposit. The results show that the wax content and the wax appearance temperature (WAT) of the deposits increase with shear stress and radial temperature gradient, and decrease with radial wax molecule concentration gradient near the pipe wall. The DSC tests on the wax deposits revealed that the deposit wax content is strongly correlated to the oil wax content. Furthermore, an empirical correlation was developed to predict the wax content and the WAT of the wax deposit. Verification of the empirical correlation using the different oils indicated that the average relative error of the wax content prediction and average absolute error of WAT prediction were 13.2% and 3.6°C, respectively. 相似文献
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水性苯丙防锈底漆的研制及初期防闪锈性能的改进 总被引:1,自引:0,他引:1
以苯丙乳液为成膜物质,柠檬锶铬黄和纳米复合铁钛粉复配为防锈颜料,制备了一种水性环保防锈底漆.研究了颜填料体积浓度(PVC),防锈颜料柠檬锶铬黄和纳米复合铁钛粉的用量,以及分散剂、缓蚀剂的种类和用量对涂层防腐蚀性能的影响.结果表明,当涂料颜填料体积浓度在35%~40%之间,w(柠檬锶铬黄)=3%~5%,w(纳米复合铁钛粉)=6%~8%,w(复合型缓蚀剂)=0.25%~0.35%时,所制的水性防锈涂料性价比合适,初期防闪锈能力好,综合性能优良. 相似文献
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Karamatollah Rezaei Tong Wang Lawrence A. Johnson 《Journal of the American Oil Chemists' Society》2002,79(12):1241-1247
Partially hydrogenated soybean oil, referred to as soywax, is gaining attention as a renewable and biodegradable alternative
to paraffin wax for use in candles. However, current soywax candles suffer from several problems, especially poor melting
and solidification properties. Fully hydrogenated soybean oil exhibits improved melting properties but owing to its fragile
texture, it is not yet acceptable in most candle applications. In the present work, KLXTM (a wax composed of fractionated hydrogenated soy and cottonseed oils) was used as a base material for candles, and the effects
of additives such as hydrogenated palm oil (HPO), FFA, and paraffin on the textural and combustion properties were evaluated.
Melting and solidification profiles of KLX were better than those of fully hydrogenated soy oil. Adding FFA improved the solidification
properties of KLX candles. Adding paraffin improved the compressibility of the wax, while HPO addition decreased hardness
and compressibility. Changing the candle diameter and/or wick size along with changing the wax composition resulted in candles
with desirable quality attributes. 相似文献
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新型肥料缓释剂酰胺蜡的合成 总被引:1,自引:0,他引:1
以硬脂酸和二乙烯三胺为原料,通过加入添加剂利用催化合成反应制备了能够用于肥料表面作缓释剂的酰胺蜡。结果表明,最佳合成工艺条件为:n(硬脂酸)∶n(二乙烯三胺)=1.00∶1.05,反应温度140~150℃,反应时间2~3 h,催化剂质量分数0.5%,增硬剂的质量分数0.5%,抗氧剂的质量分数0.5%。在该工艺条件下产品的颜色为白色,酸值5.23 mg(KOH)/g,滴点78~82℃,针入度0.2 mm,胺值145.42 mg(KOH)/g。用户使用表明该产品可以替代国外同类产品,而且价格低于国外同类产品。 相似文献