ØWhat are the main types of polyurethane foam?
Polyurethane foam contains two kinds of materials, Soft foam and Rigid foam. Soft foam is open-cell structure, which mainly plays the role of cushioning. Hard foam is closed-cell structure, which has the function of heat preservation and waterproof.
ØFeatures of different polyurethane foams?
PU Soft Foam
Polyurethane soft foam has properties of low density, good elastic recovery, sound absorption, breathable and heat preservation. According to the different degrees of softness and hardness, polyurethane soft foam can be divided into ordinary soft foam, super soft foam, high load-bearing soft foam, high rebound soft foam, etc.
Rigid PU Foam
Rigid PU foam has excellent characteristics such as good thermal insulation, light weight, large specific strength, easy construction, etc. It also has the properties of sound insulation, shockproof, electrical insulation, heat resistance, etc.
ØWhat are the polyurethane foam applications?
PU Soft Foam
² Cushion material: such as seats, sofas, mattresses, etc., PU soft foam is a very ideal cushion material.
² Sound-absorbing material: The open-hole PU soft foam has good sound absorption and vibration elimination function, which can be used as indoor sound insulation material.
² Underwear
Rigid PU Foam
² Food and other industries freezing equipment: such as refrigerators, cold storage, refrigerated trucks, etc.
² Industrial equipment insulation: such as storage tanks, pipelines, etc.
² Construction materials
² Transportation industry: such as car roofs, car interiors, etc.
² Artificial wood materials
ØHow to obtain high quality PU foam products?
Just like other polymer materials, PU materials are susceptible to aging and degradation of product performance when used outdoors.
When PU foam is exposed to UV light, the photo-aging reaction of polyurethane will be triggered. PU material is very sensitive to UV light between 290-400nm band, and after absorbing UV light in this band, the molecular chain of PU will be broken, which will eventually lead to the destruction of physical properties of the product. At the same time, the chromogenic groups formed by degradation will cause the PU material to deepen in color.
In order to inhibit the photo-aging reaction caused by the above factors, adding stabilizers and antioxidants to the material is a very simple and efficient way to improve the weathering and processing stability of PU materials!
OMNISTAB SOLUTIONS for PU FOAM:
If you are interested in above additives, welcome to contact our sales staff. Sincerely looking forward to your inquiry!
