• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Experimental test results from an environmental protection agency test method for determination of vapor suppressant effectiveness
【24h】

Experimental test results from an environmental protection agency test method for determination of vapor suppressant effectiveness

机译：环保局测试方法的实验测试结果，用于确定蒸气抑制剂的有效性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The results obtained from laboratory experiments conducted using Environmental Protection Agency (EPA) subpart WWWW of 40 Code of Federal Regulations (CFR) part 63 (1)-test method are discussed in this article. The original test method was developed to measure the effectiveness of wax suppressants used to reduce hazardous air pollutant (HAP) emissions from unsaturated polyester (UP)/vinyl ester resins. Wax additions of ∼1.5% by weight to commercial UP resins suppress HAP emissions through the formation of surface barrier films. However, the tests performed in this study included the use of limestone and an adjunct, organic fiber reinforcement, rather than the wax. The addition of either commercial product to the UP formulations tested in this study was also shown to reduce HAP emissions. Suppression was a combination of absorption and an increased diffusion path barrier for the volatile organic carbon (VOC) components. Based on the limited data obtained, it was shown that the oil absorption characteristics of the two adjunct products could be used to estimate the expected level of vapor suppression for a specific resin formulation. Values reported in the literature for the oil adsorption characteristics of the adjunct limestone and the commercial biomass fiber were used in the laboratory tests. Although the oil adsorption characteristic of any ingredient added to a base resin formulation is indicative of its potential for emissions reduction, the EPA test protocol is still required to be performed for validation. Such screening tests will always be needed due to the variability associated with commercial UP resins and the evolution of customized UP/fiberglass composite formulations developed by custom molding shops.
机译：本文讨论了使用美国联邦法规40（CFR）第63部分（1）的环境保护署（EPA）子部分WWWW进行的实验室实验获得的结果-测试方法。开发原始测试方法是为了测量用于减少不饱和聚酯（UP）/乙烯基酯树脂中有害空气污染物（HAP）排放的蜡抑制剂的有效性。向市售UP树脂中添加约1.5％（重量）的蜡可通过形成表面阻挡膜来抑制HAP排放。但是，这项研究中进行的测试包括使用石灰石和辅助的有机纤维增强剂，而不是蜡。在本研究中测试的UP配方中添加任何一种商业产品还可以减少HAP排放。抑制是对挥发性有机碳（VOC）组分的吸收与扩散路径障碍的结合。基于获得的有限数据，表明两种辅助产品的吸油特性可用于估计特定树脂配方的预期蒸汽抑制水平。在实验室测试中使用了文献中报道的辅助石灰石和商业生物质纤维的吸油特性值。尽管添加到基础树脂配方中的任何成分的吸油特性均表明其具有减排潜力，但仍需要执行EPA测试规程以进行验证。由于与商业UP树脂相关的可变性以及由定制模塑车间开发的定制UP /玻璃纤维复合配方的发展，将始终需要此类筛选测试。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号