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Catégorie :Category: nCreator TI-Nspire
Auteur Author: rodrag0
Type : Classeur 3.0.1
Page(s) : 1
Taille Size: 3.14 Ko KB
Mis en ligne Uploaded: 08/07/2024 - 14:14:07
Uploadeur Uploader: rodrag0 (Profil)
Téléchargements Downloads: 2
Visibilité Visibility: Archive publique
Shortlink : http://ti-pla.net/a4138441
Type : Classeur 3.0.1
Page(s) : 1
Taille Size: 3.14 Ko KB
Mis en ligne Uploaded: 08/07/2024 - 14:14:07
Uploadeur Uploader: rodrag0 (Profil)
Téléchargements Downloads: 2
Visibilité Visibility: Archive publique
Shortlink : http://ti-pla.net/a4138441
Description
Fichier Nspire généré sur TI-Planet.org.
Compatible OS 3.0 et ultérieurs.
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Formulary for Plastics 1. Definitions: Polymers: High-molecular-weight organic compounds formed by modifying natural substances or chemically combining monomers. Monomer: Basic building block of polymers. 2. Types of Polymers: Thermosets: Example: Epoxy Resin Properties: Hard, brittle, low thermal expansion, decompose without melting. Elastomers: Example: Natural Rubber Properties: Soft, malleable, decompose without melting. Thermoplastics: Amorphous Thermoplastics: Example: Polystyrene (PS), Polycarbonate (PC), Polyvinyl Chloride (PVC) Properties: Transparent, brittle below Tg, lower thermal expansion, lower solidification shrinkage. Semi-Crystalline Thermoplastics: Example: Polyethylene (PE), Polypropylene (PP), Polyvinylidene Fluoride (PVDF) Properties: High stiffness, strong beyond Tg, high wear resistance, higher density, greater solidification shrinkage. 3. Important Temperatures: Glass Transition Temperature (Tg): Temperature at which a polymer transitions from a hard, glassy material to a soft, rubbery state. Melting Temperature (Tm): Temperature at which a crystalline or semi-crystalline polymer melts. 4. Mechanical Properties: Youngs Modulus (E): Measures the stiffness of a solid material. E = Ã / µ (Units: Pa) Ã = F / A (Stress) (Units: N/m^2 = Pa) Ã = Stress F = Force (Units: N) A = Cross-sectional area (Units: m^2) µ = L / L0 (Strain) (Units: dimensionless) µ = Strain L = Change in length (Units: m) L0 = Original length (Units: m) Poissons Ratio (½): Ratio of lateral strain to axial strain. ½ = µq / µl (Units: dimensionless) ½ = Poissons ratio µq = Lateral strain µl = Axial strain Shear Stress (Ä): Ä = F / A (Units: N/m^2 = Pa) Ä = Shear stress F = Force (Units: N) A = Area (Units: m^2) Shear Rate (³): ³ = dv / dy (Units: s^-1) ³ = Shear rate dv = Change in velocity (Units: m/s) dy = Change in distance (Units: m) 5. Key Processes: Polymerization: Process of reacting monomer molecules to form polymer chains. Types: Radical Polymerization Thermal Polymerization Ionic Polymerization Coordination Polymerization Polycondensation: Produces polyamides, polyesters, with by-products like water, HCl, or ammonia. Polyaddition: Produces polyurethanes and epoxy resins without by-products. 6. Structure and Morphology: Amorphous: Disordered molecular structure. Semi-Crystalline: Contains both ordered (crystalline) and disordered (amorphous) regions. 7. Example Formulas: Mass Fraction of Solid Phase: mS / m_tot = (C0 - CL) / (CS - CL) mS = Mass of the solid phase m_tot = Total mass of the alloy (solid + liquid) C0 = Overall (nominal) composition of the alloy CL = Composition of the liquid phase CS = Composition of the solid phase Mass Fraction of Liquid Phase: mL / m_tot = (CS - C0) / (CS - CL) mL = Mass of the liquid phase m_tot = Total mass of the alloy (solid + liquid) C0 = Overall (nominal) composition of the alloy CL = Composition of the liquid phase CS = Composition of the solid phase Calculating Crystallinity (DSC Measurement): Crystallinity (%) = (measured heat of fusion / heat of fusion of pure crystallites) * 100 Measured heat of fusion = Heat measured during DSC (Units: J/g) Heat of fusion of pure crystallites = Heat required to melt a pure crystalline substance (Units: J/g) Made with nCreator - tiplanet.org
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Compatible OS 3.0 et ultérieurs.
<<
Formulary for Plastics 1. Definitions: Polymers: High-molecular-weight organic compounds formed by modifying natural substances or chemically combining monomers. Monomer: Basic building block of polymers. 2. Types of Polymers: Thermosets: Example: Epoxy Resin Properties: Hard, brittle, low thermal expansion, decompose without melting. Elastomers: Example: Natural Rubber Properties: Soft, malleable, decompose without melting. Thermoplastics: Amorphous Thermoplastics: Example: Polystyrene (PS), Polycarbonate (PC), Polyvinyl Chloride (PVC) Properties: Transparent, brittle below Tg, lower thermal expansion, lower solidification shrinkage. Semi-Crystalline Thermoplastics: Example: Polyethylene (PE), Polypropylene (PP), Polyvinylidene Fluoride (PVDF) Properties: High stiffness, strong beyond Tg, high wear resistance, higher density, greater solidification shrinkage. 3. Important Temperatures: Glass Transition Temperature (Tg): Temperature at which a polymer transitions from a hard, glassy material to a soft, rubbery state. Melting Temperature (Tm): Temperature at which a crystalline or semi-crystalline polymer melts. 4. Mechanical Properties: Youngs Modulus (E): Measures the stiffness of a solid material. E = Ã / µ (Units: Pa) Ã = F / A (Stress) (Units: N/m^2 = Pa) Ã = Stress F = Force (Units: N) A = Cross-sectional area (Units: m^2) µ = L / L0 (Strain) (Units: dimensionless) µ = Strain L = Change in length (Units: m) L0 = Original length (Units: m) Poissons Ratio (½): Ratio of lateral strain to axial strain. ½ = µq / µl (Units: dimensionless) ½ = Poissons ratio µq = Lateral strain µl = Axial strain Shear Stress (Ä): Ä = F / A (Units: N/m^2 = Pa) Ä = Shear stress F = Force (Units: N) A = Area (Units: m^2) Shear Rate (³): ³ = dv / dy (Units: s^-1) ³ = Shear rate dv = Change in velocity (Units: m/s) dy = Change in distance (Units: m) 5. Key Processes: Polymerization: Process of reacting monomer molecules to form polymer chains. Types: Radical Polymerization Thermal Polymerization Ionic Polymerization Coordination Polymerization Polycondensation: Produces polyamides, polyesters, with by-products like water, HCl, or ammonia. Polyaddition: Produces polyurethanes and epoxy resins without by-products. 6. Structure and Morphology: Amorphous: Disordered molecular structure. Semi-Crystalline: Contains both ordered (crystalline) and disordered (amorphous) regions. 7. Example Formulas: Mass Fraction of Solid Phase: mS / m_tot = (C0 - CL) / (CS - CL) mS = Mass of the solid phase m_tot = Total mass of the alloy (solid + liquid) C0 = Overall (nominal) composition of the alloy CL = Composition of the liquid phase CS = Composition of the solid phase Mass Fraction of Liquid Phase: mL / m_tot = (CS - C0) / (CS - CL) mL = Mass of the liquid phase m_tot = Total mass of the alloy (solid + liquid) C0 = Overall (nominal) composition of the alloy CL = Composition of the liquid phase CS = Composition of the solid phase Calculating Crystallinity (DSC Measurement): Crystallinity (%) = (measured heat of fusion / heat of fusion of pure crystallites) * 100 Measured heat of fusion = Heat measured during DSC (Units: J/g) Heat of fusion of pure crystallites = Heat required to melt a pure crystalline substance (Units: J/g) Made with nCreator - tiplanet.org
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