Researchers Conceive Soy-Based PCB Substrate

摘要

A pair of University of Delaware researchers have developed a way to fabricate a low-Dk substrate made from soy.rnYes, soy.rnBesides being "green," Mingjiang Zhan and Dr. Richard P. Wool, who are part of the chemical engineering department of the University of Delaware, say the electrical properties of the novel material are superior to those of FR-4-based laminates.rnIn their work, biobased resin acrylated epoxidized soybean oil (AESO) was either crosslinked with divinylbenzene (DVB) or chemically modified by phthalic anhydride. The DVB-crosslinked resins had a 14° to 24℃ increase in their glass-transition tempera-tures (Tg), which was dependent on the crosslink densities. Tg increased linearly as the crosslink density increased.