V.35,no.4,Dec 2023 https://doi.org/10.5764/TCF. Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2017 / V.29,no.1,Mar Title Synthesis of Aminosilane treated Waterborne Poly Urethane/Epoxy Hybrid Resin used for Loudspeaker Damper Authors Hyun-Seuk Choi, Dong-Ho Choi1, Ju-Yong Park2 and Man-Woo Huh3* Institution/Affiliations DYETEC, 1Heung-il Polychem, 2Hanil Textile, 3Kyungil University Pages/Total page pp.25 ~ 36 / 12 Language Korean Abstract Abstract This study worked on the synthesis of waterborne polyurethane/epoxy hybrid resins containing aminosilane compound to replace conventional phenol resins used for a coating material for loudspeaker dampers, which are not harmful to human being. Waterborne polyurethane resins were synthesized from two diisocyanate of 4,4'- diphenylethane diisocyanate and toluene diisocyanate, two polyols of polyester polyols(PEP), polycarbonatediol(PCD), including and anionic center of dimethylol butanoic acid, a chain extenders of ethylenediamine(EDA), and a neutral agent of triethylamine. Synthesized polyurethane resins and commercially available bisphenol A type waterborne epoxy resin were blended in weight ratios of 80:20 to prepare polyurethane/epoxy hybrid resins. The synthesized waterborne polyurethane/epoxy hybrid resins were reacted with aminosilane compound to improve mechanical properties. Aminosilane-treated polyurethane /epoxy hybrid resins showed better mechanical properties. Keywords Keywords loudspeaker dampers, aminosilane, waterborne polyurethane, epoxy, hybrid resin Download   Reference http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=OSGGBT_2017_v29n1_25&ordernum=