Spray combination polyurethane foaming agent features:
1. It has a continuous and dense surface layer and a high-strength honeycomb structure with interconnect wall with the obturation rate up to 95%;
2, waterproof, heat preservation, heat insulation, gas insulation, corrosion and other characteristics.
I. material introduction:
Spray coating is designed for civil cold storage, bus ceiling, building roof and arch building and made of insulation materials, flexible and convenient construction. The B component is isocyanate. Component A is composed of polyether polyol, foaming agent, catalyst, foam stabilizer and other raw materials. Spraying technology: black and white materials are heated and pressurized through the spraying machine, forming a high pressure impact in the spray gun, forming a vortex mixing is very full. High-speed movement of the material at the nozzle to form a fine mist droplets, uniform spray to the surface of the object.
2. Reaction data and foam performance (customizable) :
Usage ratio (polyether: isocyanate) | 100:100 |
Inspired by the time(sec) | 2-4 |
gelation time(sec) | 8-10 |
Free bubble density(kg/m³) | 30-35 |
global density(kg/m³) | 50-60 |
heat conductivity coefficientW/m. K | ≤0.025 |
percentage of close area | ≥92% |
compressive strength: Kpa | ≥300 |
dimensional stability(-30℃~100℃/96h) | ≤1 -25℃,48hr,% ≤0.5 |
water absorption | ≤3% |
Packing specification: galvanized iron drum, white 220kg/ drum, black 250kg/ drum. |