According to the heat insulation mechanism, fabric heat insulation coating can be divided into three types: barrier type, reflection type and radiation type. we suzhou supxtech company can offer the Aerogel coating technology and the machinery , it can be use for the colth , plastic sheet and felt . it widly use for the keep warm area.
Barrier heat insulation coating is a kind of passive cooling coating which realizes heat insulation through the impedance effect of heat transfer. The heat insulation mechanism is relatively simple, and the composition with low thermal conductivity or the air with very low thermal conductivity is introduced into the film to obtain good heat insulation effect. It usually has the characteristics of relatively small bulk density, low thermal conductivity and small dielectric constant.
Reflective heat insulation coating is to isolate the solar energy in the form of reflection. Commonly used reflective materials include ceramic powder, aluminum powder, titanium dioxide and ATO (antimony doped tin dioxide) powder.
Common barrier fabric heat insulation coating agent according to the chemical structure, mainly include polyvinyl chloride (PVC), polyacrylate (PA), polyurethane (PU), silicone, rubber emulsion and polytetrafluoroethylene, among which PA and PU are more used; According to the use of medium, can be divided into solvent and water dispersed type 2.
SiO2 aerogel is an amorphous nanoporous material with controllable structure and continuous three-dimensional network structure. And its density is adjustable between 3 ~ 500mg/cm3, is the world’s lowest density of a solid material, porosity can reach 80% ~ 99.8%, pore size between 1 ~ 100nm, specific surface area can be up to 1000m2/g. Due to its unique nanoporous structure, its thermal conductivity is extremely low, as low as 0.017W/ (m•K) at room temperature and pressure, making it the lowest known solid material with thermal conductivity. Because the structure unit of aerogel skeleton is smaller than the wavelength of visible light, it also has good light transmission performance. At the same time, it is inorganic material, with non-combustible or flame retardant effect, in the field of thermal insulation has a wide range of application prospects.
Post time: Nov-30-2022