OPTIMIZATION OF A MIXTURE OF POLYMERIC COMPOSITION AND PARAMETERS OF TECHNOLOGICAL PROCESS FOR THERMO-SEALING OF SPECIAL PROTECTIVE CLOTHES FOR FIREMAN

Now broad application at production of special protective clothes of firefighters is found by the metallized materials steady against influence of fire and high temperatures and thermal streams. Application of traditional ways of a fastening of details from the metallized materials with a film covering, steady against influence of fire, high temperature and thermal streams, promotes formation of connections with low operational and heat-physical characteristics. There is a need for creation of technology solutions providing release of qualitative, reliable samples of special protective clothes for firefighters, made from heat- and fire-resistant metallized materials. Main methodological approaches used at optimization of structure of the thermo-sealing composition and parameters of technological process chosen for realization of original technology of thermo-sealing and hardening of knots and connections of special protective firefighter’s clothes from increased thermal influences are stated. The objective is solved with use of methods of mathematical planning of a multifactor experiment and a simplex planning. The expense of polymeric composition, mass of fire-retarding agent, time and temperature of contact drying are chosen as the varied factors. The indicators “Explosive loading at stretching perpendicular to a seam” and “An oxygen index” are the criteria of optimization. The rational combination of the components of the thermo-sealing composition and the parameters of the technological process for obtaining strong, fire-resistant joints details of special protective firefighter’s clothing is determined. The developed recipe of the thermo-sealing composition and the parameters of the technological process have been tested at production of fragments of heat-shielding firemen’s suits.

metallized materials, steady against influence of fire, high temperatures and thermal streams, protective clothes, technology, multifactor experiment, optimization

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