| Introduction:
Natural and synthetic
robbers with many different compositions are used in
many machineries and equipment. The elasticity of rubber
makes it a perfect choice for products such as washers,
tubes, tires, balls, joints, pads, boots, hoses, and
bands.
Most polymers have
little resistance to high temperatures. Polymers used in
household plastic products tend to melt, deform,
decompose or burn in high temperatures.
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