Qiang Ren

Synthesis and properties of low-dielectric hydrophobic polyimides containing alkyl groups and ortho ‑phthalic structures

In this study, two novel aromatic diamine monomers (TBA and DTBA) containing methyl, tert‑butyl and ortho-phthalic twisted structures were designed via molecular design. A series of polyimides were subsequently prepared by one‑step high‑temperature solution polycondensation of th...

Study on the Influence of Furfural on the Analysis of SARA Fractions

Elution chromatography was used to analyze the content of SARA (saturate, aromatic, resin, and asphaltene) fractions in simulated raffinate and extract phases containing furfural (FUL), and the influence mechanism of furfural on the content analysis of SARA in the two phases was...