| 摘要 |
FIELD: rocketry; development of a composition of binding substance for manufacture of the brush type products. ^ SUBSTANCE: the invention is pertaining to the field of rocketry, in particular, to development of a composition of binding substance for manufacture of the brush type products. The composition contains, in mass %: hydroxyl-containing polybutadiene rubber - 31.0-33.0; zinc oxide or carbon technical - 7.4-8.0; 1.4- butyleneglycol - 0.7-0.8; trimethylolpropane - 0.08-0.1; transformer oil - 5.2-5.6; stannous dibutyldilaurate - 0.013-0.036; a hardener - oligodiene urethane prepolymer in a combination with 20 % solution of triphenylmethanetriisocyanate in dichlorethane or 27 % solution of triphenylmethanetriisocyanate in ethylacetate with the contents of isocyanate groups of 3.5-4.5% and 53.0-55.5%. The technical result of the invention - manufacture of the composition of binding substance with the high mechanical, binding and operational characteristics and with provision of serviceability of the finished products in the range of temperatures from plus 50°C to minus 50°C at action of high loadings. ^ EFFECT: the invention ensures production of the binding substance composition with high mechanical, binding and operational characteristics and serviceability of the finished products at the temperatures of plus 50°C - minus 50°C at action of high loadings. ^ 1 tbl |
