Classification CONCRETE Gravel sand cement PAINT Paint and
- Slides: 27
Classification • CONCRETE: Gravel, sand cement • PAINT: Paint and aluminum flakes • GRAPHITE/EPOX YGraphite fibers in epoxy matrix
Polymer Matrix Composites • What are the most common advanced composites? – Graphite/Epoxy – Kevlar/Epoxy – Boron/Epoxy
Polymer Matrix Composites • What are the drawbacks of polymer matrix composites? – Low operating temperatures – High CTE and CMEs – Low elastic properties in certian directions
Are Carbon and Graphite the Same? • No – Carbon fibers have 93%-95% carbon content and graphite has >99% carbon content – Carbon fibers are produced at 2400 o F and graphite fibers are produced at 3400 o F
Table 1. 4. Typical mechanical properties of polymer matrix composites and monolithic materials
Comparative Stiffness of PMCs and Metals
How to make a PMC
Schematic of Prepreg Manufacturing
Prepreg Boron/Epoxy
Autoclave Lamination
Filament Winding Video
Resin Transfer Molding
Common PMC Fibers & Matrices • Fibers – Graphite – Glass – Kevlar • Matrices – Epoxy – Phenolic – Polyester
Table 1. 5 Typical mechanical properties of fibers used in polymer matrix composites
Cost Comparison of PMC fibers Type of fiber A-glass C-glass E-glass S-2 Glass Heavy Tow Medium Tow Low Tow Kev 29 Kev 149 Cost ($ per pound) 0. 65 -. 90 0. 75 - 1. 00 6. 00 - 8. 00 9. 00 - 12. 00 15. 00 -20. 00 40. 00 -70. 00+ 12. 00 -14. 00 25. 00 -30. 00
Manufacturing of Glass Fibers
Glass Fiber Types • • • E-glass (fiberglass) - electrical applications S-glass - strength applications C-glass - Corrosion resistant D-glass - Low dielectric applications A-glass - Appearance applications AR-glass - Alkali resistant
Table 1. 6 Comparison of properties of E-glass and S-glass
Table 1. 7 Chemical Composition of E-Glass and S-Glass Fibers
Fig 1. 10 Forms of Fibers
Fig 1. 11 Manufacturing Graphite Fibers
Resin Systems • • • Polyester Phenolics Epoxy Silicone Polymide
Properties of epoxy
Curing Stages of Epoxy
Comparison of Resins
Difference between thermosets and thermoplastics
Pre-Preg Graphite/Epoxy
- Present perfect tense
- Fineness modulus of sand
- Separating sand from gravel chemical or physical change
- Separating sand from gravel physical or chemical change
- Is separating sand from gravel a chemical change
- Mortar mix water ratio
- Difference between rapid sand filter and slow sand filter
- Rcc reinforced cement concrete
- Cube test formula
- Dr pavor
- Perbedaan rapid sand filter dan slow sand filter
- Lack of friction
- Dry sand casting
- Tobermonite gel is chemically
- Glass ionomer types
- Informal inventory
- Concrete semi concrete abstract
- Gravel is being dumped from a conveyor belt at a rate of
- Ned gravel
- Clicker gravel transport
- Submerged gravel wetland
- A hopper drops gravel at a rate of 75 kg
- Tar and cement
- Tensol cement advantages and disadvantages
- Classification of paints
- What is classification of matter
- Rammable refractory factories
- Liquid solvent cement