| The sealing material using for the ship’s speed motor outer protective coatingNeed to have quite the mechanical properties and adhesive ability and good oilresistant properties.This paper uses liquid hydroxyl terminated butadiene acrylonitrile copolymer(HTBN) and polyaryl polymethylene isocyanate (PAPI) as the main rawmaterials, uses N, N-dihydroxy methyl aniline (Isonol) as the chain extender, usesone-step preparation of HTBN (HIP) type polyurethane elastomer. In this paper, byadjusting the substance amount and the chain extender N, N-dihydroxy methylaniline (Isonol) liquid hydroxyl terminated butadiene acrylonitrile copolymer(HTBN) the of the and system R value (isocyanate in the NCO and HTBN/Isonol-OH in the molar ratio of) size, to obtain a polyurethane-urea elastomers based onpolybutadiene-acrylonitrile glycol; Through the static mechanics and dynamicmechanics method test material, hardness, tensile strength of the adhesiveperformance and using temperature and oil resistance,etc, so as to achieve acomprehensive the good performance of polyurethane sealing material.apolyurethane sealing materials which have good comprehensive properties. |
