xxd Flashcards
(20 cards)
uses of thermochromic ink?
Test strips for batteries
Contact thermomerters
kettles
uses of hydrochromic ink?
Damp dmage in buildings
child paintings
uses of photochromic ink?
Glasses
windows
t shirts
uses of electrochromic ink?
Battery use checker
smart windows - controls amount of light and heat allowed through
Uses of shape memory alloy?
Glasses frames
springs for windows
dental wire
Definition and uses of Polymorph?
A thermoplastic which can be shaped into anything when heated to 6n degrees Celsius. This can be done any number of times.
Uses
Grips
Prototyping
Moulds for vacuum forming
Definition and uses of smart grease?
Smart grease is a sticky and viscous gel which can be used to control the speed of moving parts
Uses
Slow close doors
speed control
Definition and uses of smart putty?
This material behaves soft like mouldable plastic but becomes like hard rubber if impacted
Uses
Stress Grips
Impact protection
What is the Kite mark?
This mark is used on products where safety is paramount like crash helemts or smoke alarms.
What is the CE mark?
This mark shows that the product has met safety, environmental, heath standards. Alos shows that the product can be sold and moved freely in Europe
What are the properites and uses of Polyamide (Nylon)?
Creamy colour, tough, fairly hard, resists wear, self-lubricating, good resistance to chemicals and machines
Bearings, gear wheels, casings for power tools, hinges for small cupboards, curtain rail fittings and clothing
What are the properites and uses of Polymethyl methacrylate (Acrylic)?
Stiff, hard but scratches easily, durable, brittle in small sections, good electrical insulator, machines and polishes well
———————————————————————————Signs, covers of storage boxes, aircraft canopies and windows, covers for car lights, wash basins and baths
What are the properites and uses of Polypropylene?
Light, hard but scratches easily, tough, good resistance to chemicals, resists work fatigue
——————————————————————————— Medical equipment, laboratory equipment, containers with built-in hinges, ‘plastic’ seats, string, rope, kitchen equipment
What are the properites and uses of Polystyrene?
Light, hard, stiff, transparent, brittle, with good water resistance
———————————————————————————Toys, especially model kits, packaging, ‘plastic’ boxes and containers
What are the properites and uses of Low density polythene (LDPE)?
Tough, good resistance to chemicals, flexible, fairly soft, good electrical insulator
———————————————————————————Packaging, especially bottles, toys, packaging film and bags
What are the properites and uses of High density polythene (HDPE)?
Hard, stiff, able to be sterilised
———————————————————————————Plastic bottles, tubing, household equipment
What are the properites and uses of Melamine formaldehyde?
Stiff, hard, strong, resists some chemicals and stains
Laminates for work surfaces, electrical insulation, tableware
What are the properites and uses of Urea formaldehyde?
Stiff, hard, strong, brittle, good electrical insulator
Electrical fittings, handles and control knobs, adhesives
What is a template?
A template is something that you can draw around to mark a shape onto material, so that it can be cut or shaped.
What is a jig?
A jig is used to make sure that parts are made exactly the same, without the need for marking out. For example, when drilling through a block of wood with two holes in, it will make sure that the holes are drilled in the same place in each component.
