首页> 外文会议>Annual International Waterborne, High-Solids, and Powder Coatings Symposium; 20050202-04; New Orleans,LA(US) >ACCELERATED ACID ETCH FOR AUTOMOTIVE CLEARCOATS: A JOINT RESEARCH PROJECT PROVIDES LAB FIELD CORRELATION
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ACCELERATED ACID ETCH FOR AUTOMOTIVE CLEARCOATS: A JOINT RESEARCH PROJECT PROVIDES LAB FIELD CORRELATION

机译:用于汽车透明涂料的加速酸蚀剂:一项联合研究项目,提供实验室和现场相关性

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Many attempts have been made in the past to develop a test that can predict the acid etch resistance of automotive clearcoats. Methods such as the Gradient Bar and Acid Spot are just two examples of the numerous laboratory methods used in industry today. This paper examines a new automotive acid etch test procedure developed jointly by BASF Corporation and Q-Panel Lab Products. Extensive environmental data was collected on composition and acidity of rainfall, frequency and duration of rainfall events, air and specimen temperatures. The critical test parameters identified include acidic solution, temperature, humidity, UV spectrum, radiant heating of the specimen, and specimen orientation. Drawing on the field data, a simulated acid rain solution was developed and an exposure test cycle was developed. An accelerated weathering device was modified into a new model to accommodate the exposure requirements. The newly developed procedure, called the BASF Accelerated Acid Test, shows excellent correlation with field etch results. In addition to outlining the recent development work, this paper also sets the expectations for the future availability of the protocol to industry at large.
机译:过去,已经进行了许多尝试来开发可以预测汽车透明涂料的耐酸蚀性的测试。诸如梯度条和酸点法之类的方法只是当今工业中使用的众多实验室方法中的两个例子。本文研究了由巴斯夫公司和Q-Panel Lab Products联合开发的一种新的汽车酸蚀测试程序。收集了有关降雨的成分和酸度,降雨事件的频率和持续时间,空气和样本温度的大量环境数据。确定的关键测试参数包括酸性溶液,温度,湿度,UV光谱,样品的辐射加热和样品方向。利用现场数据,开发了模拟的酸雨溶液,并开发了暴露测试周期。加速老化装置被修改为新模型,以适应暴露要求。新开发的程序称为BASF加速酸测试,与现场蚀刻结果显示出极好的相关性。除了概述最新的开发工作之外,本文还为整个行业将来对该协议的可用性设定了期望。

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