Plastics .ppt

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Hi i'am Sean , i study in OUR OWN ENGLISH HIGH SCHOOL .This is a power point on plastics , to help us understand what is a plastic , what are the types of plastic and what harm do they cause to our environment

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Plastics .ppt

  1. 1. In Plastics, the arrangement of the individualunits may be linear or cross linkedLinear or lightly cross-linked polymers forma class of plastics called thermoplasticsHeavy cross-linking plastics are calledthermosetting plastics
  2. 2. THERMOPLASTIC IS A POLYMERTHAT TURNS INTO A LIQUIDWHEN HEATED AND FREEZESINTO A VERY GLASSY STATEWHEN COOLED SUFFICIENTLY.

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