Question

list and explain four properties of plastic.give one use of plastic linked to each of these properties​

Answer 1

Answer:

This is the answer.

Hope this helps you.

Answer 2

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list and explain four properties of plastic.give one use of plastic linked to each of these properties

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Properties of plastic :-

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• 1. STRENGTH

The plastics are sufficiently strong and can be used for load bearing structural members. The strength of plastics can further be increased by reinforcing them with various fibrous materials.

Plastic as structural material has not gained much popularity because of the following resins.

⇢High cost of construction

⇢High temperature susceptibility

⇢Poor stiffness

⇢Being subjected to creep under constant load

• 2. WEATHER RESISTANCE

The plastics, prepared from phenolic resins, are only good in resisting weather effects. Certain plastics are seriously affected by ultraviolet light.

• 3. FIRE RESISTANCE

Plastics, being organic in nature, are combustible. But the resistance to fire temperatue depends upon the plastic structure.

⇢Cellulose acetale plastics burn slowly.

⇢Polyvinyl chloride (PVC) plastics are non-inflammable.

⇢Phenol formaldehyde and urea formaldehyde plastics are used as fire proofing materials.

• 4. DURABILITY

Plastics generally possess sufficient durability, provided they offer sufficient surface hardness. Thermoplastic varieties are found to be attacked by termites and rodents.

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Uses of plastics :-

⇢Plastics are used to make bicycle helmets, child safety seats and airbags in automobiles.

⇢They're in the cell phones, televisions, computers and other electronic equipment that makes modern life possible.

⇢They're in the roofs, walls, flooring and insulation that make homes and buildings energy efficient.

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Extra Information:-

1. Plastic bags thrown carelessly on roads get into drains and the sewer system and choke them. As a result sewage water spills on road and causes spread of diseases.

2) Plastics give out harmful gases upon heating or burning which causes air pollution and many health problems.

3) Plastic bags filled with garbage is thrown away in the open. When stray animals look for food in these bags, they swallow plastic bags along with food. 

Don't use plastic much

And Apply 5R ✔

$\small\red{\sf { Refuse }}$

$\small\blue{\sf { Reduce }}$

$\small\pink{\sf { Reuse }}$

$\small\orange{\sf { Recycle }}$

$\small\purple{\sf { Repurpose}}$

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