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首页> 外文期刊>Journal of Protective Coatings & Linings >PENNY-WISE OR POUND-FOOLISH? HOLDING PRIMERS FOR SOLVENT-FREE EPOXY TANK LININGS
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PENNY-WISE OR POUND-FOOLISH? HOLDING PRIMERS FOR SOLVENT-FREE EPOXY TANK LININGS

机译：便士或笨拙的？ 保持溶剂的环氧罐衬里底漆

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Several decades ago,tank linings used in the chemical,oil and gas,and water and wastewater industries were invariably based upon multi-coat,low-volume-solids,solvent-borne epoxies.At that time,the chemistries of these linings were relatively simple,based typically on Bis A or epoxy phenolic resins that were co-reacted with amine or amine adduct curing agents1.In the early days,for new tank applications,the life expectancy of these multi-coat linings in harsh chemical and thermal immersion environments was often just a few years.To improve matters,and particularly when lining pitted tank floors resulting from steel corrosion caused by acids or other corrosive media,or replacing existing poor-quality linings,either fiberglass or fiberglass chop strand was used to reinforce and upgrade linings to improve their service lives.Today,however,more sophisticated and chemically-resistant linings based on advanced epoxy novolac chemistry have become the norm.Instead of using fiberglass reinforcement with a lining that will be applied to pitted steel,reinforcement of the linings can now be achieved by the incorporation of judiciously selected pigments.Many of these linings have little or no solvent content,can be applied in thick single-coat films direct to metal(DTM) and cure fast with return-to-service capabilities in less than a day.In addition,the linings can be engineered to comply with API652~2.Hence,facility owners can extend the intervals between lining inspections.
机译：几十年前，在化学，石油和天然气，水和废水行业中使用的坦克衬里总是基于多层涂层，低体积固体，溶剂的环氧树脂。该时间的化学物质相对简单，通常基于双A或环氧酚醛树脂，其与胺或胺加合物固化剂的1。在早期的新罐应用中，这些多涂层衬里的预期寿命在苛刻的化学和热浸泡环境中往往只是几年。更好的事情，特别是当由酸或其他腐蚀性介质引起的钢腐蚀引起的钢腐蚀引起的衬里罐楼层时，或更换现有的劣质衬垫，因此玻璃纤维或玻璃纤维斩股线用于加强和升级然而，基于先进的环氧树脂酚醛清漆化学的衬里改善其服务生活。然而，基于先进的环氧树脂化学的更复杂和化学耐化学的衬里已成为常态。使用玻璃纤维加强具有衬里的衬里，将应用于镀钢，现在可以通过明智地选择的颜料掺入衬里的加固来实现。这些衬里的优秀含量很少或没有溶剂含量，可以直接涂覆厚的单涂层薄膜金属（DTM）和固化在不到一天的时间内快速恢复服务能力。此外，衬里可以设计成符合API652〜2.hence，设施所有者可以在衬里检查之间延长间隔。

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