FIELD: polymer production.
SUBSTANCE: invention relates to production of polyurethane foam used in vehicles, construction, and other fields where heat- and acoustic-insulation materials are required. Process comprises following operations: mixing polyetherpolyol with amine activator, polyatomic alcohol, and foaming agent; adding preliminarily prepared mixture of expanded graphite, melamine cyanurate, and gypsum in amount 5 to 50 % by weight based on the total amount of components; and adding polyisocyanate. Expanded graphite is mixed with melamine cyanurate at ratio (1-2):1 and in summary amount corresponding to 15-30 % by weight on the total amount of components. Foaming agent utilized is water or Freon. Composition may further contain trichloroethyl phosphate as fire-retardant additive.
EFFECT: increased strength and heat resistance of polymer material.
2 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCTION OF FIREPROOF POLYURETHANE FOAM | 2004 |
|
RU2268899C1 |
| METHOD OF PRODUCTION OF FIRE RESISTANT FILLED POLYURETHANE | 2006 |
|
RU2336283C2 |
| METHOD FOR PRODUCING FIRE-RESISTANT RIGID POLYURETHANE FOAM | 2022 |
|
RU2805414C1 |
| COMPOSITION FOR FIRE-RESISTANT FOAMED POLYURETHANE | 2019 |
|
RU2714917C1 |
| SOUND-ABSORBING MATERIAL FOR TRUCK SOUND-ABSORBING SCREENS WITH REDUCED FLAMMABILITY | 2022 |
|
RU2800220C1 |
| COMPOSITION FOR PRODUCTION OF RIGID FOAMED POLYURETHANE WITH LOW FLAMMABILITY | 2019 |
|
RU2726212C1 |
| COMPOSITION FOR OBTAINING OF FIREPROOF POLYURETHANE FOAM | 2014 |
|
RU2556212C1 |
| METHOD OF PRODUCING FOAM POLYISOCYANURATE OF HIGH FIRE RESISTANCE | 2020 |
|
RU2733510C1 |
| METHOD OF PRODUCING FILLED POLYURETHANE WITH LOW FLAMMABILITY | 2023 |
|
RU2818123C1 |
| COMPOSITION FOR PRODUCING RIGID FOAMED POLYURETHANES FOR HEAT INSULATION PURPOSES | 2013 |
|
RU2579576C2 |
