Polymers and Plastics
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Questions and Answers

Which type of plastics can be melted down and recycled into new products?

  • Both thermoplastics and thermosetting plastics
  • Thermoplastics (correct)
  • Thermoplastic elastomers
  • Thermosetting plastics

    • What is the main difference between thermoplastics and thermosetting plastics?

  • Thermoplastics are more commonly used for road surfaces than thermosetting plastics
  • Thermoplastics can be melted down and reformed, while thermosetting plastics cannot (correct)
  • Thermoplastics are better insulators than thermosetting plastics
  • Thermoplastics are more resistant to heat than thermosetting plastics

    • Which type of plastics are commonly used for handles on frying pans and saucepans?

  • Thermosetting plastics (correct)
  • Both thermosetting plastics and thermoplastics
  • Thermoplastic elastomers
  • Thermoplastics

    • What is the proper term for fiberglass?

    <p>Glass reinforced plastic (D)</p> Signup and view all the answers

    Which material is commonly used to make plastic window frames?

    <p>Polyvinyl chloride (A)</p> Signup and view all the answers

    Which family of plastics can resist heat and fire, making them suitable for electrical fittings and panhandles?

    <p>Thermosetting plastics (C)</p> Signup and view all the answers

    What happens to thermosetting plastics when they are heated?

    <p>They become hard and rigid (C)</p> Signup and view all the answers

    What is the importance of understanding the different types of plastics and polymers?

    <p>To ensure their appropriate use in various applications (D)</p> Signup and view all the answers

    Flashcards

    Thermoplastics

    Plastics that can be melted down and reshaped multiple times.

    Thermosetting Plastics

    Plastics that become permanently hard and rigid after heating. They cannot be melted and reshaped.

    Glass Reinforced Plastic (GRP)

    A material (usually a resin) that is combined with glass fibers to create a strong, lightweight composite.

    Polyvinyl Chloride (PVC)

    A strong and durable thermoplastic commonly used for window frames, pipes, and siding. It's also known by its abbreviation: PVC.

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    Polyethylene (PE)

    A thermoplastic that is known for its flexibility and resistance to chemicals, making it suitable for packaging, films, and bottles.

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    Curing

    A process of changing the structure of thermosetting plastics by applying heat and pressure, making them stronger and more durable.

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    Phenolic Resin

    A type of resin that is commonly used in thermosetting plastics. It is known for its durability and resistance to heat and chemicals.

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    Importance of Understanding Different Plastics

    Understanding the properties of different plastics allows us to choose the most suitable material for each application. It also helps in recycling and managing plastic waste.

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    Study Notes

    Introduction to Polymers: Thermoplastics and Thermosetting Plastics

    • Polymers are another term for plastics.
    • Polymers can be classified into two families: thermoplastics and thermosetting plastics.
    • Thermoplastics can be easily formed, recycled, and remolded, but they do not resist heat well.
    • Thermosetting plastics can resist heat and fire, making them suitable for electrical fittings and panhandles.
    • Thermoplastics are identified by different symbols and numbers for recycling purposes.
    • Examples of thermoplastics include acetate, acrylic, LDPE, HDPE, and PET.
    • Thermosetting plastics undergo a chemical change when heated and become hard and rigid.
    • Examples of thermosetting plastics include epoxy resin, urea formaldehyde, melamine formaldehyde, and glass reinforced plastic (GRP).
    • Visual imagery can be used to help remember the different types of plastics and polymers.
    • Polypropylene is a tough and flexible thermoplastic that can be visualized with a picture of a school chair and a person doing flexible yoga or gymnastics.
    • Understanding the different types of plastics and polymers is important for their appropriate use in various applications.
    • A test can be used to assess the knowledge and understanding of the different types of plastics and polymers.

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    Test your knowledge on polymers and plastics! Discover the various types of plastics and their differences, while learning which ones are best suited for specific applications. Take this quiz to enhance your understanding of this essential material.

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