Educational

Polyurethane foam packaging is an open cell material, has a density of from about 8 to about 15 kilograms per cubic meter, which is primarily used to protect and support lighter weight, delicate product with high fragility. The purpose of polyurethane foam in packaging is to act as a shock absorber, protecting a moving packaged object from damage as it meets impact resistance.

Odors are gaseous and volatile organic compounds (VOCs), which affect the health of an individual. The odorous compounds are either a component of foam formulation or formed as a byproduct during the polymerization reaction.

Memory foam is also known as viscoelastic foam. When you break this work apart, it comes from viscous + elastic. According to this naming, the foam has the properties of viscous and elastic materials at the same time. The mentioned property makes the foam to be able to closely contour to shapes.

SRAY-APPLIED POLYURETHANE foam is a unique roofing material. It is sprayed as a liquid directly onto the roofing substrate; within seconds it foams, expanding 20 to 30 times its original volume. The foam forms a fully adhered, closed cell structure that resists water infiltration while providing insulation

In-Mold Coatings (IMCs) have been developed to coat and cover surface defects of compression molded articles to provide a smooth high-quality surface having an aesthetically appealing appearance

The popularity of hard polyurethane foam has been very high and the parts produced using this type of foam are rapidly expanding the market and general use. This type of hard polyurethane foam is known in the Iranian commercial market as wood foam and in the global market as Wood imitation Polyurethane Foam.

In recent years, people’s environmental awareness has been increasing, which has led to the search for solutions to find a suitable alternative for wooden decorative parts.

The first urethane was synthesized, as early as 1849 by Wurtz. The work of Wurtz demonstrated the preparation of monoisocyanates and the subsequent formation of urethanes and substituted urea linkages by reaction of the isocyanate group with a primary alcohol and a secondary amine, respectively.

Time and temperature are the two primary factors that influence product quality. Storage in a warehouse at a constant temperature of 25°C would be best for most polyurethane raw materials, although this isn’t always practical.