What are the uses of flexible and rigid polyurethane foam?
Polyurethane rigid foam is a high polymer made of isocyanate and polyether as the main raw materials, under the action of foaming agent, catalyst, flame retardant and other additives, mixed by special equipment (polyurethane foaming machine), and foamed on-site by high-pressure spraying.
There are two types of polyurethane foam: soft foam and hard foam. Soft foam is open cell
structure, hard foam is closed cell structure; soft foam is also divided into skinned and non-skinned two kinds. The main function of polyurethane foam is cushioning. Polyurethane soft foam is commonly used in sofa furniture, pillows, cushions, toys, clothing and soundproof lining.
Rigid polyurethane foam is a new type of synthetic material with the function of heat preservation and waterproofing, and its thermal conductivity is low, only 0.022-0.033W/(m*Κ), which is equivalent to half of the extruded plastic board, and it is the low thermal conductivity of all the current heat preservation materials. Rigid polyurethane foam is mainly used in building exterior wall insulation, roof waterproofing and thermal insulation integration, cold storage thermal insulation, pipe insulation materials, building panels, refrigerated trucks and cold storage thermal insulation materials.
Foam is one of the main varieties of polyurethane synthetic materials, its main feature is porous, and thus has a small relative density and high specific strength. According to the different raw materials used and formulation changes, can be made into flexible, semi-rigid and rigid polyurethane foam and other types; if the polyol varieties used can be divided into polyester-type, polyether-type and castor oil-type polyurethane foam and so on; if the foaming method is classified and there are block, molded and sprayed polyurethane foam and other types. Polyurethane foam has a wide range of applications, almost penetrating into all sectors of the national economy, especially in the furniture, bedding, transportation, refrigeration, construction, insulation and other sectors is very common, has become one of the indispensable materials.
Advantages:
1. High efficiency and energy saving, no gap after filling, strong bonding after curing.
2. Anti-vibration and anti-pressure, no cracking, no corrosion, no shedding after curing.
3. Ultra-low temperature thermal conductivity, heat-resistant and heat preservation.
4. Efficient insulation, sound insulation, waterproof and moisture-proof after curing.
5. This caulk can be adhered to concrete, coating, wall, wood and plastic surfaces.
6. Application scope: the product business areas: door and window project installation, home improvement, etc. 1. sealing and fixing wooden, plastic steel, aluminum alloy and other metal door and window frames. 2. wrapping and sealing cable wire boxes, air conditioning ducts, thermal insulation of hot and cold water pipes. 3. filling the voids of the masonry building; fill the voids in the hull of the ship. 4. home maintenance: fill the holes and gaps, floor tiles, floor repair.
Polyurethane raw materials are widely used in PU synthetic leather, PU shoe soles, polyurethane elastomers: soft foam, hard foam, polyurethane coatings, polyurethane adhesives, polyurethane fibers, polyurethane resin. Polyurethane, as one of the widely used synthetic materials in this century, is closely related to life. In this regard, we provide several kinds of imported/domestic catalyst materials and foaming agents.
The catalog of polyurethane additives series is as follows:
The company is currently involved in its own products: industrial cleaning, flexible plate making, sponge polyurethane PU, clothing knitting, PRTV silicone rubber anti-fouling flash coatings, medical devices, household chemicals, flavors and fragrances, pen ink making and other industries;
Trade products also involve coatings, inks, polyurethane, power anti-fouling flash, lubricants, flavors and fragrances, printing and dyeing, textile auxiliaries, fire, daily chemicals and other industries.
