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Tech > Plastic > Flashcards

Plastic Flashcards

1
Q

The three thermo plastics are

A

Acrylic
PVC
rigid polystyrene

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2
Q

Acrylic properties

A

Hard wearing
Shiny
Comes in range of colours

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3
Q

PVC properties

A

Strong
Light weight
Durable

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4
Q

Rigid polystyrene whats good abt it

A

Light
Strong

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5
Q

Acrylic uses

A

Display signs
Baths
Machine guards

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6
Q

PVC uses

A

Air and water pipes
Shoe soles

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7
Q

Rigid polystyrene uses

A

Vacuum forming
School project work

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8
Q

What is the 3 thermo setting plastics

A

Melamine
Epoxy resin
Uses formaldehyde

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9
Q

Melamine properties

A

Heat resistant
Hard
Scratch resistant

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10
Q

Melamine uses

A

Tableware
Worktops

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11
Q

Epoxy resin properties

A

Resistant to chemicals
Heat resistant
Strong

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12
Q

Exopxy resin uses

A

Circut boards
Glue

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13
Q

Urea formaldehyde properties

A

Strong durable

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14
Q

Urea formaldehyde uses

A

Electrical switches
Handles

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15
Q

Plastic advantages

A

Comes in lots of colours
Can be shaped easily
Non toxic material
Low cost

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16
Q

Plastic disadvantages

A

Not good for the environment

17
Q

Why are plastics used in schools

A

Range of colours
Easy to form and reshape as both thermoplastics
They can be easily cut using a coping saw
They can be finished to a high standard (they can be polished to make them really shiny)

18
Q

First step when working with plastic

A

Mark on plastic with steel ruler and pen

19
Q

Second step

A

When we cut plastic into desired shape we use a coping saw This is used to make cut curves in thin pieces of plastics

20
Q

Third step when working with plastic

A

We finish the edges of the plastic with a file this tool removes stratcges on the plastic edge -cross filing-draw filing

21
Q

4th step when working with plastic

A

We use wet and dry paper which is like sand paper and it takes away any saw marks

22
Q

5th step when working with plastic

A

Finally we finish plastic yo make it shiny and smooth using the polisher

Tech (3 decks)

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