Polymers

Question 1

What is the thermoplastic?

Answer 1

A material which can be repeatedly re-shaped and reheated allowing it to be recycled off its initial use. The plastics have long linear chain molecules held by forces.

Question 2

What is a thermosetting polymer?

Answer 2

Material which undergoes a chemical change where molecules form cross links. Thermostat polymers cannot be reheated and reshaped even at very high temperatures.

Question 3

What is an elastomer?

Answer 3

A material which was room temperature can be deformed under pressure and then upon release of pressure will return its original shape. Last of us have weak bonds which allow them to stretch easily.

Question 4

What are different types of polymer base sheet and film?

Answer 4

Foam board, fluted PP sheet, translucent PP sheet, Styrofoam, low density polyethylene sheet, plastic foam

Question 5

What are properties of foam board?

Answer 5

Two layers of card with a foam middle core

Question 6

What are uses of foam board?

Answer 6

Mood board backing as well as presentation boards and modelling

Question 7

What are flutter pp sheets ?

Answer 7

Extracted sheets with integral flutes or corrugations which are relatively lightweight and easily bent along the flutes

Question 8

What are the uses of fluted PP sheets?

Answer 8

Signs such as construction site signs as well as storage boxes

Question 9

What are the properties of translucent polypropylene sheet?

Answer 9

Tough poly machine can be folded millions of time virtually impossible to tear and water resistant

Question 10

Uses of translucent PP sheets

Answer 10

Packaging products folders as well as boxes

Question 11

What are the properties and performance characteristics of Styrofoam?

Answer 11

They are dens can be cut and sanded with standard workshop tools

Question 12

What are the uses of Styrofoam?

Answer 12

Product model link and formers for mouldings and laminating

Question 13

What are the properties of low density polyethylene?

Answer 13

They are tough and available and then sheet form they can be transparent and have a good chemical resistant and flexible

Question 14

What are the uses of low density polyethylene?

Answer 14

Food wrapping, air pillow packaging, bubble wrap as well as carrier bags

Question 15

What are the uses of plastozate foam ?

Answer 15

They are tough flexible have a good impact of resistant and impermeable to liquids

Question 16

What are the uses of plastozate foam ?

Answer 16

Protective packaging swimming floats, gym and exercise mats

Question 17

What are the properties of cellular acetate?

Answer 17

They are transparent and tough and naturally by degrade

Question 18

What are the uses of cellular acetate?

Answer 18

Packaging film and membranes and photographic film

Question 19

What are the uses of polylactide?

Answer 19

They are transparent, tough and naturally by degradable

Question 20

What are the uses of polylactide?

Answer 20

By the gradable packaging film

Question 21

What are the properties of Ldpe ?

Answer 21

Tough , chemical resistant , weatherproof and available in translucent

• safe working them is 65
  Thermoforming plastic

Question 22

What are the properties of high density polyethylene ?

Answer 22

Available in translucent and is weatherproof, tough and has a good chemical resistance
Themo forming plastic

Question 23

What are the properties ofpolypropylene ?

Answer 23

Available in translucent, good chemical resistance, tough , good fatigue resistance

Safe working temperature-100 degrees
Thermoforming plastic

Question 24

What are the properties of Hips ?

Answer 24

Hard , rigid , available in translucent, tough

Safe working temp is 70 degrees
Thermoforming plastic

Question 25

What are the properties of Abs ?

Answer 25

Tough , hard , available in opaque Safe working temperature is 80 degrees Thermoforming plastic

Question 26

What are the properties of pmma ?

Answer 26

Tough, hard, good chemical resistance, available in translucent. Safe temperature is 95 Thermoforming plastic

Question 27

What are the properties of nylon ?

Answer 27

Tough , corrosion resistant, good temperate resistance , low coefficient of friction Safe working temperature is 150 Thermoforming plastic

Question 28

What are the properties of rigid polyvinyl chloride ?

Answer 28

Rigid, tough, hard, good chemical resistance, good weathering Safe working temperature- 95 degrees Thermoforming plastic

Question 29

What are the properties of urea formaldehyde?

Answer 29

Hard , heat resistant , good electrical insulator, brittle Thermo setting plastic

Question 30

Properties of Melamine formaldehyde ?

Answer 30

Hard , heat resistant, good chemical resistance , food safe Thermosetting plastic

Question 31

What are the properties of polyester resin ?

Answer 31

Rigid , heat resistant, chemical resistant and brittle

Question 32

What are the properties of epoxy resin ?

Answer 32

Rigid , clear , hard , tough and chemical resistant Thermosetting polymers

Question 33

What are the properties of natural rubber ?

Answer 33

High tensile strength, low elongation, good hardness , good cold resistance

Question 34

What are the properties of butadiene rubber ?

Answer 34

Tough, excellent wear resistance against friction , good thermal resistance

Question 35

What are the properties of neoprene ?

Answer 35

Good thermal resistance, toughness , good oil and chemical resistance, excellent weather resistance and electrical insulator

Question 36

What are the properties of silicone ?

Answer 36

Good flexibility at low temperatures , poor abrasion resistance, good thermal resistance to temperature esteemed , good lubricating qualities

Question 37

What are the two types of bio polymers ?

Answer 37

Natural and synthetic

Question 38

What are the negatives of using bio polymers ?

Answer 38

- Produce methane gas when they decompose in landfill contributing to global warming - the require high temperatures to degrade and may leave toxic residues - natural bio polymers need land to grow the crops - they cannot be recycled and may contribute to theme throw away culture

Question 39

What type of polymer is corn starch polymer and what is its source ?

Answer 39

Natural Bio polymer , made from starch vegetables such as corn and potatoes

Question 40

What type of polymer is potatopak and what is its source ?

Answer 40

It is a natural biopolymer made from potato starch

Question 41

What type of polymer is biopol polymer and what is its source ?

Answer 41

Natural biopolymer made from bacteria grown in cultures. Additives to promote refraction

Question 42

What type of polymer is poly lactic acid polymer and what is its source ?

Answer 42

It is a synthetic bio polymer made from corn kernels or sugar cane , fermented to produce lactic acid which is synthesised

Question 43

What type of polymer is lactide polymer and what is its source ?

Answer 43

A synthetic bio polymer that is fullly compostable and water soluble.

Question 44

What type of polymer is glycolide polymer and what is its source ?

Answer 44

A synthetic bio polymer that is fully compostable

Question 45

What are the different types of refraction

Answer 45

Photodegradable- light Oxydegradable - oxygen Hydro degradable- water

Question 46

Why does refraction occur ?

Answer 46

The action of micro organisms which convert the material into water , carbon dioxide, biomass and possibly methane