Product Design - A Level 5.0 / 5 based on 2 ratings ? Design Technology: Product DesignTypes of materialA2/A-levelAQA Created by: JacobCaCreated on: 20-11-16 17:04 What are the 3 types of plastic? Thermoplastic, thermosetting plastic and elastomers 1 of 13 What are the general properties of plastic? Good electric and thermal insulators, good strength to weight ratio and generally have a good atmospheric and chemical corrosion resistance 2 of 13 What are the thermoplastic examples? ABS, PP (polypropylene) and LDPE 3 of 13 What are the thermoset examples? Epoxy resin, melamine formaldehyde and urea formaldehyde 4 of 13 What are the properties of thermoplastics? Can be repeatedly reheated and remoulded 5 of 13 What are the properties of thermosets? They undergo a chemical change that results in a permanent rigidity 6 of 13 What are the properties of elastomers? Polymers that have good elasticity - they return to their original shape 7 of 13 What are the properties of ABS? High impact strength, good toughness + strength, scratch resistant and lightweight+durable 8 of 13 What are the properties of Polypropylene? Lightweight, food safe, good impact resistance, good chemical resistance 9 of 13 What are the properties of LDPE? Low density, low stiffness, low rigidity and good chemical resistance 10 of 13 What are the properties of Epoxy resin? High strength when reinforced with fibres to make GRP. Good chemical and wear resistance 11 of 13 What are the properties of Melamine formaldehyde? Rigid, good strength + hardness. Scratch resistant and can be coloured 12 of 13 What are the properties of Urea Formaldehyde? Rigid, hard, good strength, brittle, heat resistant and good electrical conductor 13 of 13
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