F500 sound insulation filler is a kind of polymer has many tiny closed bubble pore structure of polymer composite materials. It is mainly composed of polyols (polyol) and isocyanate (MDI) of two components of liquid raw materials, using specialized equipment, fluid in under a certain condition, produce obturator rate of not less than 95% of the rigid body compound products. Cured foam with caulking, bonding, sealing, heat insulation, sound-absorbing effect, is a kind of environmental protection and energy saving, easy to use building materials, is suitable for sealing leak, fills up the seams, fixed bonding, heat preservation sound insulation, one material is multi-purpose.
The internal structure:
Through aerosol cans when OFF500, foam polyurethane material can rapidly expanding and with moisture in the air or come into contact with the substrate curing reaction to form bubbles, forming a layer is composed of numerous small “bubble” of the overall structure, in addition to F500 itself of the damping material sound-absorbing effect, by the “bubble” built in small cavity body also have sound-absorbing ability, and strong reflection ability of high frequency (more than 8 KHz). This makes F500 as a distinct advantage when sound insulation filler, the sound absorption coefficient can reach 0.75 ~ 0.85.
F500 table dry in about 10 minutes (room temperature 20 ℃ environment), all dry time is different according to the environmental temperature and humidity, under normal circumstances, the dry summer time about 4 to 6 hours, winter zero requires 24 hours or longer to dry. Under normal conditions of use (and in the case of its appearance has cover), estimates that its service life not less than 10 years, in – 10 ℃ ~ 80 ℃ temperature range of the solidified foam are good elasticity and cohesive force. F500 filler flame retardant can achieve B level.