Thermoplastics And Thermosetting Plastics

1. Name 4 different thermo plastics.

AcrylicPolythenePVCHIPS

PET

Polystyrene

Nylon

The correct answer includes Acrylic, Polythene, PVC, and HIPS as examples of thermo plastics. Polystyrene, Nylon, and PET are also types of plastics, but they are not specifically categorized as thermo plastics.

Explanation

The correct answer includes Acrylic, Polythene, PVC, and HIPS as examples of thermo plastics. Polystyrene, Nylon, and PET are also types of plastics, but they are not specifically categorized as thermo plastics.

2. Which of the following are thermo-setting plastics?

Polyester resinUrea formaldehyde Melamine formaldehydeEpoxy resin

Polyethylene, PVC, Polystyrene

Thermo-setting plastics are a type of polymer that can withstand high temperatures without deforming. Examples include Polyester resin, Urea formaldehyde, Melamine formaldehyde, and Epoxy resin. Polyethylene, PVC, and Polystyrene are thermo-plastics which soften upon heating and can be remolded.

Explanation

Thermo-setting plastics are a type of polymer that can withstand high temperatures without deforming. Examples include Polyester resin, Urea formaldehyde, Melamine formaldehyde, and Epoxy resin. Polyethylene, PVC, and Polystyrene are thermo-plastics which soften upon heating and can be remolded.

3. What is an advantage and disadvantage of using acrylic?

Advantage: Acrylic is lightweight and easy to transport. Disadvantage: Acrylic is resistant to scratches.

Advantage: Acrylic is a very durable material. Disadvantage: Acrylic is difficult to find in different colors.

Advantage: Acrylic is environmentally friendly. Disadvantage: Acrylic is not suitable for outdoor use.

AdvantageAcrylic is available in a wide range of colours and opacitiesDisadvantageAcrylic is quite soft and scratches easily

Acrylic is known for its versatility in terms of color and opacity options, making it a popular choice for various applications. However, its soft nature makes it susceptible to scratches, which is a key drawback to consider when using acrylic.

Explanation

Acrylic is known for its versatility in terms of color and opacity options, making it a popular choice for various applications. However, its soft nature makes it susceptible to scratches, which is a key drawback to consider when using acrylic.

4. What is an advantage and disadvantage of using urea formaldehyde?

AdvantageUrea formaldehyde has a high surface hardnessDisadvantageUrea formaldehyde can give off toxic fumes when it cures (hardens)

Advantage: Urea formaldehyde is a cost-effective material. Disadvantage: Urea formaldehyde is not suitable for outdoor use.

Advantage: Urea formaldehyde is a renewable resource. Disadvantage: Urea formaldehyde is not easily available in the market.

Advantage: Urea formaldehyde has excellent insulation properties. Disadvantage: Urea formaldehyde is resistant to moisture.

5. What is a thermoplastic?

Thermoplastics are plastics that cannot withstand heat and easily melt.

Thermoplastics are plastics that can only be shaped once and then remain in that shape permanently.

Thermo plastics are plastics that can be heated and shaped multiple times

Thermoplastics are plastics that have a rigid and inflexible structure.

Thermoplastics are a type of plastic that can be softened by heating and hardened by cooling, allowing them to be molded and remolded multiple times without undergoing chemical change. Unlike thermosetting plastics, thermoplastics can be re-heated and reshaped, making them versatile for various applications.

Explanation

Thermoplastics are a type of plastic that can be softened by heating and hardened by cooling, allowing them to be molded and remolded multiple times without undergoing chemical change. Unlike thermosetting plastics, thermoplastics can be re-heated and reshaped, making them versatile for various applications.

6. What is a thermo-setting plastic?

Thermo-setting plastics are plastics that are not affected by heat.

Thermo-setting plastics are plastics that do not require heating for shaping.

Thermo-setting plastics are plastics that can be heated and reshaped multiple times.

Thermo-setting plastics are plastics that can be heated and shaped only once

Thermo-setting plastics are set and cannot be reshaped once they have been heated, unlike thermo-plastics which can be reshaped multiple times.

Explanation

Thermo-setting plastics are set and cannot be reshaped once they have been heated, unlike thermo-plastics which can be reshaped multiple times.

7. What thermo plastic structure is PVC?

Polystyrene (PS)

Polypropylene (PP)

PVC

Polyethylene (PE)

PVC, which stands for Polyvinyl Chloride, is a thermoplastic polymer commonly used in construction and piping due to its versatility and durability.

Explanation

PVC, which stands for Polyvinyl Chloride, is a thermoplastic polymer commonly used in construction and piping due to its versatility and durability.

8. What thermo plastic is commonly used for bin bags?

Polypropylene

PVC

Polystyrene

Polythene

Polythene, also known as polyethylene, is the most commonly used thermoplastic for bin bags due to its flexible and durable properties. Polypropylene, Polystyrene, and PVC are also thermoplastics but are not typically used for bin bags.

Explanation

Polythene, also known as polyethylene, is the most commonly used thermoplastic for bin bags due to its flexible and durable properties. Polypropylene, Polystyrene, and PVC are also thermoplastics but are not typically used for bin bags.

9. What thermo-setting plastic is commonly used for laminating work surfaces?

Polyethylene

Polystyrene

Melamine formaldehyde

Polyvinyl Chloride

Melamine formaldehyde is commonly used for laminating work surfaces due to its durability and resistance to stains and scratches.

Explanation

Melamine formaldehyde is commonly used for laminating work surfaces due to its durability and resistance to stains and scratches.