FIELD: chemistry.
SUBSTANCE: epoxy diane resin ED-20, ethylsilicate - 40 and acetone are fed into a mixing container and stirred for 2-3 min until a homogeneous mass is obtained. Triglycidyl ether Laproxide - 703, triglycidyl ether Laproxide - 301, foam regulator Penta - 483, low molecular weight polyamide resin PO-300, ethylenediaminomethylphenol AF-2, polyhydroxylsiloxane liquid 136-41 and K-1 catalyst are successively added. All components are then mechanically mixed at temperature 25±10°C for 60-70 seconds at a rate of 800-1000 rpm, and hardening is first carried out at 25±10°C for not less than 24 hours, then at 100±10°C for 1-1.5 hours and then at 150±10°C for 2-3 hours.
EFFECT: method lowers hardening temperature while preserving stability of the structure and form during simultaneous exposure to high temperature and vibration loads of up to 15 g and also reduces the range of density of the foam compound.
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Authors
Dates
2011-01-10—Published
2009-02-12—Filed