基于超临界技术的电子级化学品用中空容器 Hollow containers for electronic grade chemicals based on supercritical technology

电子级化学品，又称 为电子化工材料，是指电子工业使用的专用化学品，其中包括电子级四氯化硅、电子级双氧水、电子级硫酸、电子级氢氟酸、电子级盐酸、光刻胶、显影液、剥离液等液体型电子化学品，2022 年中国液体型电子化学品需求量约为 80 万吨，产量规模达到 2000 亿元。目前，为了保证电子级化学品的洁净度，大量的液体型电子化学品使用特种钢制备的容器进行包装运输，该类包装容器不但价格高昂，而且对四氯化硅、氢氟酸等强腐蚀的化学品仍然存在耐腐蚀性差等的问题。为了满足电子级化学品的包装要求，世界各大公司正在研制新型材料制备的包装容器，其中高密度聚乙烯（HDPE）化学稳定性好，易于加工，成本低廉，逐渐被认定为最符合电子级化学品包装要求的理想材料。高密度聚乙烯通常采用乙烯，在选定的乙烯聚合催化剂存在下，使用适宜的聚合工艺进行生产。由于使用的催化剂和聚合工艺不同，得到的高密度聚乙烯的洁净度存在很大差别，主要表现在一些高密度聚乙烯产品中的金属杂质含量高，低聚物含量高，添加的抗氧剂和润滑剂存在迁移现象，这些因素均能造成包装物的污染，影响电子级化学品的质量。河北世纪恒泰富塑业有限公司经过多年的研究，解决了高密度聚乙烯材料加工过程中易导致金属和颗粒物超标无法满足 UPS 级化学品质量要求的问题，产品及配件可以满足承装 UPS 级电子级化学品要求。

Electronic grade chemicals, also known as electronic chemical materials, refer to specialized chemicals used in the electronic industry, including electronic grade silicon tetrachloride, electronic grade hydrogen peroxide, electronic grade sulfuric acid, electronic grade hydrofluoric acid, electronic grade hydrochloric acid, photoresist, developer, stripping liquid and other liquid electronic chemicals. In 2022, China's demand for liquid electronic chemicals is about 800000 tons, with a production scale of 200 billion yuan. At present, in order to ensure the cleanliness of electronic grade chemicals, a large number of liquid electronic chemicals are packaged and transported in containers made of special steel. This type of packaging container is not only expensive, but also has poor corrosion resistance to highly corrosive chemicals such as silicon tetrachloride and hydrofluoric acid. In order to meet the packaging requirements of electronic grade chemicals, major companies around the world are developing packaging containers made of new materials. Among them, high-density polyethylene (HDPE) has good chemical stability, is easy to process, and is low in cost. It is gradually recognized as the ideal material that best meets the packaging requirements of electronic grade chemicals. High density polyethylene is usually produced using ethylene and suitable polymerization processes in the presence of selected ethylene polymerization catalysts. Due to the different catalysts and polymerization processes used, there are significant differences in the cleanliness of the obtained high-density polyethylene, mainly manifested in the high content of metal impurities and oligomers in some high-density polyethylene products, as well as the migration phenomenon of added antioxidants and lubricants. These factors can cause pollution of packaging materials and affect the quality of electronic grade chemicals. After years of research, Hebei Century Hengtai Fu Plastic Industry Co., Ltd. has solved the problem of metal and particulate matter exceeding the standard during the processing of high-density polyethylene materials, which cannot meet the quality requirements of UPS grade chemicals. The products and accessories can meet the requirements for carrying UPS grade electronic grade chemicals.