Polyurethanes (commonly abbreviated PU or PUR) are a group of polymers formed by the reaction of di-isocyanates, which contain repeating urethane groups, and hydroxyl compounds known as polyols. The high reactivity of isocyanates and the addition of various chemicals enable the formulation of materials with a wide range of structural characteristics. PUR properties can range from soft elastomers to very hard, abrasion-resistant plastics. PUR foams can be rigid or flexible, and can take the form of fiber for clothing, rubber for shoe souls or skateboard wheels, protective coatings, rigid structural panels, or flexible foams used in mattresses or seating.
Many PUR foams utilize toluene di-isocyanate (TDI) for the A-side of the formulation. This petrochemical is a highly toxic volatile organic compound with serious health risks to humans and other living organisms. Repeated exposure to TDI in the course of polyurethane foam production has been known to cause respiratory ailments and is a suspected carcinogen. The traditional B-side polyols are derived from petroleum, a non-renewable resource and contributor to greenhouse gas emissions. Producing these types of foams releases volatile organic compounds into the atmosphere. The final products are difficult to reuse or recycle.
Málama Composite's bio-based products combine non-toxic, methylene-based isocyanates (MDI) for the A-side, and polyols derived from plant-based renewable sources such as soy, castor, jatropha or even algae for the B-side. Water is our blowing agent. The resulting foams are dimensionally stable, generate no air or water pollution during manufacturing, no unhealthy VOC emissions in use, and can be easily reused or recycled.
The structural properties of our products include high sheer and impact strength, resulting in final products that perform better and last longer. Their consistent density and tight, uniform cellular structure machines accurately and surfaces beautifully. Their high moisture resistance and dimensional stability assures greater product longevity and lower maintenance costs. High R value and heat resistance makes them ideal for the insulation of homes and buildings, as well as for and mobile and stationary refrigeration units, technical packaging, and many other industrial applications.