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Natural Materials
| Polyurethane: |
Polyurethane is the natural polymer, which is composed of a chain of organic unit connected by urethane links. It is manufactured by combining a diol and a diisocyanate, via a chemical reaction. This process develops a basic material whose variations can be smashed, stretched and scratched without destructible. The product is available in solid and liquid form suiting for various applications.
This highly flexible, resilient and durable material finds the application in cotton, paint, wood, metal and rubber industries. It is also used in making baby toys and airplane wings. Due to its moisture and heat resistant features, it is ideal for use underwater and sun. In addition to this, it insulates the walls, hence can be used in consumer cooler as well.
Characteristics of Polyurethane:
- Bouncy like rubber
- Squishy like upholstery foam
- Hard like fiberglass
- Protective like varnish
- Sticky like glue
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| Silicone: |
Silicone is a synthetic compound, which is mixed with organic and inorganic polymers. The polymers also combine hydrogen, carbon, oxygen and other chemical elements. It is found in solid crystalline form like glass and sand. It can also be availed as semi-solid adhesive, liquid lubricant and rubber like plastic polymer. Commercially, it is used as grease, oil and resin in diverse industries. Silicone is represented as [R2SiO]n, where R stands for an organic group such as ethyl, methyl and phenyl.
Properties of Silicone:
- Electrical insulation properties
- Low chemical reactivity
- Low thermal conductivity
- Low toxicity
- Resistance to ozone, oxygen and UV light
- Thermal stability
Silicones are used in making various products in many industries. It is used as insulation in electrical products, teeth impression molds in dentistry, seals in airplanes, sealants in cooking apparatus, and so on. Besides, it is also used in firestop, dry cleaning, defoaming, coatings and automotive industries for various other applications.
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