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Nghiên cứu ảnh hưởng của tỷ lệ các hợp phần đến phản ứng khâu mạch nhựa epoxy biến tính dầu hạt cây đen ( Cleidiocarpon cavaleriei ) bằng dianhydrit piromelitic
Author(s) -
Thành Đỗ Minh,
Hiền Lê Xuân,
Dũng Nguyễn Tiến,
Thắng Đàm Xuân
Publication year - 2018
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.15625/vjc.2018-0016
Subject(s) - epoxy , pyromellitic dianhydride , curing (chemistry) , chemistry , nuclear chemistry , polymer chemistry , swelling , materials science , organic chemistry , polyimide , composite material , layer (electronics)
The influence of the content of epoxy resin modified by black seed oil (EBSO), dianhydride pyromellitic (PMDA) and dimetylbenzylamine (DMBA) on the crosslinking reaction of EBSO by PMDA have been studied and the optimal conditions for the curing have been determined. It was showed that at the optimal conditions: The mol ratio of anhydride/epoxy = 1.3, reaction temperature 120°C, the DMBA content of 2.3 % of the total mass of EBSO and PMDA, the epoxy and anhydride groups had been totally converted after 120 min of reaction. The mol ratio of anhydride/epoxy = 1.3 have been determined to be optimal condition for formation of the cured coating having gel fraction, swelling degree, flexibility, adhesion and relative hardness of 93 %, 150 %, 1 mm, 1 point, and 0.90, respectively.