Difference Between Rubber and Polyurethane

Rubber and polyurethane are two different materials. The advantages of its use are also slightly different:

Rubber:

1. Rubber is the latex obtained from rubber trees, rubber grass and other plants. It is made of elastic, insulating, impermeable and air-tight materials after processing. High elastic polymer compound. Divided into natural rubber and synthetic rubber. Natural rubber is made by extracting colloid from rubber trees, rubber grass and other plants after processing; synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in all aspects of industry or life.

2. Rubber is made of latex, and part of the non-rubber components contained in the latex remain in the solid natural rubber. Generally, natural rubber contains 92%-95% of rubber hydrocarbons, while non-rubber hydrocarbons account for 5%-8%. Due to different production methods, different production areas and even different rubber picking seasons, the proportions of these components may vary, but they are basically within the range.

Polyurethane:

1. Polyurethane material is currently the best thermal insulation material in the world. A class of polymers whose main chain contains -NHCOO- repeating structural units. English abbreviation PU. It is formed by the polymerization of isocyanates (monomers) and hydroxyl compounds. Due to the strong polar urethane group, it is insoluble in non-polar groups and has good oil resistance, toughness, abrasion resistance, aging resistance and adhesion. Materials suitable for a wide temperature range (-50 to 150°C) can be prepared with different raw materials, including elastomers, thermoplastic resins and thermosetting resins. Not resistant to hydrolysis at high temperature, nor resistant to alkaline media.

2. Polyurethane elastomers are used as rollers, conveyor belts, hoses, auto parts, shoe soles, synthetic leather, wires and cables and medical artificial organs, etc.; Used for thermal insulation, sound absorption, packaging, insulation and low-foaming synthetic wood, coatings for advanced vehicles, furniture, wood and metal protection, anti-seepage materials for pool dams and buildings, and fabric coatings. Adhesives have good adhesion to metals, glass, ceramics, leather, fibers, etc. In addition, polyurethane can also be made into emulsions, magnetic materials, etc.