The Application of Domestic High-density Polyethylene in Electronic Grade Chemical Packaging Barrels
The high-density polyethylene HD570 from Sinopec-SK petrochemical company was prepared into 200-liter packaging barrels and subjected to experimental research in the packaging of electronic-grade chemicals.The results showed that HD570 passed stacking and dropping tests,and the metal ion precipitation test for electronic chemical packaging met the standards,but the particle precipitation test did not.The properties of HD570 and 1158P for preparing the outer and middle layers of ultra pure barrels were compared by means of melt flow index and universal material testing machine,indicating that HD570 outperformed 1158P in terms of product tensile yield stress,flexural modulus,and processing performance.Further investigation was conducted on the reasons for the unqualified packaging of HD570,and the properties of HD570 and imported material NH8D01A were compared from multiple aspects.The results showed that the raw material HD570 had higher ash content,higher content of low molecular weight polymers,and lower crystallinity than NH8D01A.Combined with the effects of additive formulations,all these factors led to HD570 failing the particle precipitation test for electronic-grade chemical packaging.This study provides insights and recommendations for the development of domestically produced ultra-pure inner layer materials as substitutes for imported ones.
HDPEultra pure barrellarge hollowchemical packaging
NETL
NSTL
万方数据
