COMPOSITE MATERIALS 1

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marco flores torrentera
Mind Map by marco flores torrentera, updated more than 1 year ago
marco flores torrentera
Created by marco flores torrentera over 9 years ago
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COMPOSITE MATERIALS 1
  1. combination of two or more materials that results in better properties than those on the individual components use alone.
    1. It's properties depend
      1. Properties of the matrix and the Reinforcement, Reinforcement Content, Reinforcement Orientation, Production Method.
        1. Classification
          1. The Shape of the constituent
            1. Fibrous Composites
              1. Fibers
                1. Continuos
                  1. Discontinuos
                    1. Aligned
                      1. Disoriented
                  2. Particulate Composites.
                    1. Reinforcement
                      1. Equiaxed Particles
                    2. Structural Composites.
                      1. Homogeneous materials + Composites
                        1. Sandwich Panels and Laminates
                    3. The Nature of the Constituent.
                      1. Organic Matrix
                        1. Low Density. Possibility of obtaining Complicated Parts . most commonly used today
                        2. Metalic Matrix
                          1. High thermal and electrical conductivity - Not absorb moisture - Greater wear resistance
                          2. Mineral Matrix
                            1. resist high temperatures
                          3. The Size of the Dispersed Phase.
                            1. Microcomposites
                              1. Micron 10^-6
                                1. processing difficulty, we can not obtain fibers or laminates.
                              2. Nanocomposites
                                1. Nanometer 10^-9
                                  1. Molecular Level
                            2. Interphase Union
                              1. Mechanical Connection
                                1. Roughness between the two surfaces resulting in the union
                                2. Electrostatic bonding
                                  1. This type of bonding occurs when one surface is positive and the other negative charge .
                                  2. Chemical Union
                                    1. Surface reinforcement has chemical groups compatible with chemical groups of the parent
                                    2. Union by interdiffusion
                                      1. The surface of the reinforcement and the matrix polymer chains have diffusing including
                                    3. Architecture of organic matrix composites
                                      1. Reinforced plastics
                                        1. .They consist of matrices in which fiber reinforcements are introduced or particle type
                                        2. Structural composites
                                          1. Laminates and joined by an adhesive.
                                            1. Laminate Orinetation
                                              1. Unidireccional
                                                1. Bidireccional:
                                                  1. Multidireccional
                                                  2. Sandwich Material
                                                    1. Honney Comb
                                            2. Organic Matrix
                                              1. Polymer
                                                1. Thermosetting
                                                  1. Have covalent bonds formed on crosslinking or curing reaction .
                                                    1. They are easy to process before curing, Tenacious, more fragile than thermoplastic.
                                                      1. Unsaturated polyester resins.vinyl ester resins. phenolics. Epoxy.
                                                  2. Thermoplastic
                                                    1. Haven't permanent connections between chains
                                                      1. Difficult to process, High molecular, Good mechanical properties
                                                        1. Polypropylene ( PP). polyethylene terephthalate. Polycarbonates
                                                2. Reinforcement
                                                  1. The fibers are most commonly used reinforcement
                                                    1. Fiberglass
                                                      1. tensile strength / density - Good value properties / cost - Dimensional stability - Ease of fabrication - Good thermal resistance
                                                        1. Types
                                                          1. D (dielectric)
                                                            1. C (chemical)
                                                              1. E (eléctrico)
                                                                1. R (resistance)
                                                            2. Carbon Fiber
                                                              1. Planes of hexagonal rings of carbon atoms covalently linked . The junction between planes is weak through Van der Waals force .
                                                                1. HM fibers ((High Modulus)
                                                                  1. HT Fibers (High Toughness)
                                                                2. Polymeric fibers
                                                                  1. Kevlar
                                                                    1. Polyethylene fibers
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