共查询到18条相似文献,搜索用时 723 毫秒
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电子接插件金属零件基材表面因模具冲压工艺过程中使用模具切削油而粘附大量油脂等污染物,因此,评估电镀前处理除油工序使用的脱脂剂的除油特性对电镀企业合理选用除油效果好、成本低、效率高及环保性能优良脱脂剂意义重大。为此,建立连续电镀脱脂剂的质量、效率、成本和环保特性的实验室综合评价试验方法,以供电镀生产过程选择经济适用环保的电解脱脂剂提供技术支撑,利用该评价方法对三种品牌的电解脱脂剂进行综合评价,结果显示,1#脱脂剂综合使用性能最优。 相似文献
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陈守堂 《精细与专用化学品》1996,(16)
吉化公司精细化工厂醇醚硫酸盐(AES)新产品经过半年多的试生产,日前通过了省级鉴定。AES主要用于配制洗发香波、洗洁精、金属清洗剂、洗衣粉、皮革脱脂剂等,国内市场需求量较大。 相似文献
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《精细化工原料及中间体》2018,(12)
正该项目位于安徽省马鞍山市,由马鞍山市希为化工有限公司投资建设,项目建成后,可实现1800t/a液体脱脂剂、200t/a粉末脱脂剂、3000t/a水性硅钢绝缘涂料、400t/a无铬钝化处理剂、100t/a无铬耐指纹处理剂、1000t/a水性金属防护涂料、1000t/a阻垢剂、200t/a杀菌剂、400t/a除油剂和400t/a高效混凝剂。 相似文献
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采用甲醇-水体系脱脂除杂法对紫杉醇提取液的初分离工艺进行了研究。通过单因素和正交实验考察了甲醇体积分数、脱脂时间和脱脂温度3个因素对脱脂效果的影响。结果表明,各因素的影响程度为脱脂温度>甲醇体积分数>脱脂时间,确定最佳工艺条件为:甲醇溶液体积分数40%、脱脂时间10 h、脱脂温度12℃。在此条件下,杂质去除率为31.2%,紫杉醇回收率为89.6%。此工艺使紫杉醇在损失较小的情况下达到了理想的初分离效果,具有操作简便、成本低、环境污染小等特点,适于大规模应用。 相似文献
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Toxic or persistent solvents have been widely used to remove greases and lubricants from various machine elements in the washing processes. In this study, an alternative degreasing method that employed subcritical state water was assessed. This environmentally benign solvent has significant potential for various degreasing applications. The operation time and temperature and flow rate of subcritical water had markedly positive impacts on the degreasing efficiency. However, the effect of pressure of subcritical water flow was minimal. The degreasing efficiency was also highly dependent on the physical characteristics and chemical composition of grease. The subcritical water treatment demonstrated a better degreasing efficiency than conventional degreasing methods. Only minor physical damage was observed on the metal parts after the subcritical water treatment. Conclusively, it was found that the subcritical water degreasing system can be used as an effective degreasing technology for machinery operations. 相似文献
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酸性除油与碱性除油的互补作用 总被引:1,自引:0,他引:1
通过生产应用实例,探讨钢铁零件酸性除油的机理和酸性除油与碱性除油的互补作用。由于酸性除油液对渗入氧化皮(锈垢)、油污的清洗有独特之处,故可在镀前处理中作为碱性除油的补充。 相似文献
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电镀工业对金属表面进行电镀之前必须对金属表面进行除油工序,除油工序中使用的除油剂若泡沫过多则会影响生产过程的进行。本文所研究的除油剂是一种低泡沫的水基金属除油剂,通过提高各种表面活性剂相互之间的协同增效作用,减少表面活性剂的用量来降低除油过程的泡沫,最终筛选出的适用于金属除油的表面活性剂最佳配比为TX-10∶MOA-5∶FMES∶LAB=4∶1∶3∶1。 相似文献
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Degreasing is an important process step in surface treatment of metal products. For treatment of degreasing baths membrane filtration is a state-of-the-art technology, but still companies, especially small ones, hesitate to establish a membrane filtration for their degreasing baths.In this article the different aims and strategies for membrane filtration of degreasing baths are discussed. The steps that have to be taken to develop a reliable membrane process are described: selection of the suitable membrane in a membrane screening, determination of process parameters in pilot experiments, preferably at the industrial line, concept development and plant realisation.Two complementary examples of membrane filtration for degreasing bath care are discussed: The first example is an investigation of degreasing bath care in the steel industry with recovery of all cleaning agent components including surfactants. The second example concerns degreasing bath care in small and medium metal working enterprises. Because degreasing bath volumes and potential cost savings are smaller, process development costs and investment costs have to be smaller as well. In this case, membrane filtration without recovery of surfactants is advantageous. 相似文献