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Improving Plastics
Improving the properties of plastics: Additives
| Question | Answer |
|---|---|
| A variety of materials can be added into the polymer powder prior to processing, this can used to | Bulk, condition the materials particular additives give the materials anti-static propitiates make the material flame retardant or resistant to ultra violet light. |
| Fillers are used to..... | reduce the bulk of the plastic. They are generally cheaper than plastics and so help reduce cost.Examples of filters include sawdust, wood flour, crushed quarts and limestone |
| Some ??????? can increase strength and hardness of the polymer by removing brittleness. | Fillers |
| Flame retardants they are used to reduce the risk of | Combustion. There main role is to create a chemical reaction once combustion has began, they release agents that will stifle the combustion. E.G. the foam used to fill the inside of cushions |
| Anti-static agents reduce the effects of..... | static charges that could build up on a product. |
| Plasticiser | They are added to improve the flow properties of plastics when moulded. They reduce the softening temperature and go some way to making the material less brittle. |
| Stabilisers | Stabilisers used to reduce the effects of ultra violet light.e. by making the plastics more resistant to being broken down by sunlight. |
Created by:
Rachael.Blackamore