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RM > Revision > Flashcards

Revision Flashcards

0
Q

Plastic

A

. Thermo plastic
. Thermo set plastic
. Oil based
. 100+ year left

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1
Q

Thermo Plastics

A 
. Monomer (single) Polymer chain (no cross links)
. Recycable 5 PP
Properties
. Reshape/mould
. Reuse/recycle
. Range of colours
. Range of sizes
. Self finishing
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2
Q

Drape moulding and Vacuum forming

A

Drape moulding:
. Thermo plastic is heated
. Draped over a mould
. Limited to simple size

Vacuum forming
. Thermo plastic is heated
. The mould is pressured into the plastic
. A vacuum is created and the mould is formed.

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3
Q

Line bending > Strip heating (Thermo plastic)

A

. Heat Thermo plastic along a straightedge
. Bend along heated section
. Only bend 1 direction.

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4
Q

Oak

A 
. Hard to work with
. Durable 
. Long grain 
. Strong 
. Very attractive again

Uses:
. High class furniture
. Veneer

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5
Q

Beech

A 
. Durable 
. FCC regulated
. Non abrassive
. Very short again
. Practically knot free

Uses:
. Kitchen equipment
. Toys
. Furniture

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6
Q

ABS (Thermo)

A 
. Impact resistant
. Tough
. Many colours 
. Shiny 
. Expensive

Uses:
. Lego bricks
. Mobile phones

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7
Q

PET (Thermo)

A 
. Hard 
. Stiff
. Strong
. Can be colourless 
. Cloudy when thicker, very brittle and crinkles

Uses
. Bottles

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8
Q

Compression moulding (Thermo setting plastic)

A

Pressure/hear > Liquid Thermo set urea formaldehyde

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9
Q

Scots pine

A

. Very fast to grow
. Easy to with
. Very knotty
. Yellow in colour

Uses:
. Main use is construction trade.

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10
Q

Softwood

A 
. Evergreen 
. Coniferous 
. Needles not leaves 
. Germanite using pin cones 
. Fast growing
. FSC Regulated
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11
Q

Hardwood

A 
. Deciduous 
. Loose their leaves in autumn/winter
. Broad leaves
. Have fruit and nuts
. Some are FSC regulated
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12
Q

Douglas fir

A

. Soft
. Durable
. Easy to work with
. Machines well

Uses:
. Indoor furniture
. Flooring
. Internal layer of plywood

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13
Q

Spruce

A

. Not very durable
. Full of small knots
. Light creamy colour
. Fast growing

Uses:
. Indoor furniture
. Acoustic guitars

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14
Q

Conversion

A

. Transforming logs into planks or boards

||| < through and through (slab) 
# < quarter sawn
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15
Q

Seasoning

A 
. Drying wood for suitable purposes 
Green timber 
. Air dry 20%
. 6 months/year shed 
> 
EMC
. Equillibrium moisture content 
. Dowel 
. Plank
. PSE
. Kiln dry 10%
. 2-5 days auto clave
16
Q

Melamine Formalehyde

A

. Stuff
. Hard
. Strong
. Resist some chemicals and stains

USES
. Laminates for work surfaces
. Electrical insulation
. Table ware

17
Q

Urea Formaldehyde

A 
. Stuff
. Hard 
. Strong
. Brittle
. Good electrical insulator 
USES:
. Electrical fittings 
. Handles 
. Control knobs 
. Adhesives
18
Q

Blow moulding (Thermo-plastic)

A

( ) < Hollow mould
( | ) < Liquid plastic
() < Air forced

19
Q

Injection moulding

A

. Creates solids
. Mobile phone cases/toy
. Granules>Hopper>Heater>Screw thread

20
Q

Polypropylene

A 
. Light
. Hard
. Tough
. Flexible 
. Chemical resistance
. Scratches easily

USES:
. Most plastic objects
. School chairs
. Sandwich boxes

21
Q

Acrylic (Thermo)

A 
. Stiff
. Hard 
. Durable
. Good electrical insulator 
. Machines 
. Polishes well
. Scratches easily 
. Brittle in small sections
Uses: 
. Signs
. Covers of storage boxes
. Headlight lens 
. Shop signs
22
Q

Teak

A 
. Tropical wood 
. Naturally oily/resistant to moisture
. Strong
. Durable 
. Golden brown in colour

Uses:
. Outdoor furniture
. Boat building
. Laboratory tables

23
Q

Mahogany

A 
. Tropical wood
. Very expensive 
. Reddish brown in colour 
. Strong 
. Easy to work with

Uses:
. High class furniture
. Veneer

24
Q

Polyester resin (Plastic component of GRP)

A 
. Stiff
. Hard
. Brittle unless laminated
. Good electrical insulator 
. Resists chemicals

Uses:
. Casting and encapsulation
. Bonding of the materials

25
Q

Thermo set plastics

A

. Monomer/polymer chain linked
. Does not reshape
. Non recycable
. Non flammable

26
Q

Plywood #

A 
. Can be more expensive than solid wood
Aeroply:
. 0.8-1.5mm in thickness very expensive 
Flexiply:
. 3 layers-top and bottom thin veneer middle softer to create curves
27
Q

Man-made board

A 
. All use waste wood to be produced 
. Formaldehyde glue is used in all of these boards
MDF:
. Moulds
. Made from wood dust

Chipboard
. Cheap furniture
. Needs to be laminated

RM (1 decks)

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