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Determination of the Inter-Relationships Between Processing Conditions and Properties of an Injection Molded Silicone Ring Using an Experimental Design

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Published/Copyright: June 22, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 12 Issue 2

Abstract

The effects of injection-molding parameters on the mechanical-physical properties of a liquid silicone rubber (LSR) injection-molded ring were studied through an experimental design. The effects of the changeover point (volume or pressure driven), runner (hot or cold), hold pressure, mold temperature and injection flow rate variations were evaluated based upon the responses related to both material properties (ultimate elongation and tensile stress in a tensile test, swelling in hexane, hardness, density) and ring properties (cross sectional diameter, weight, volume). It was determined that ring density is not dependent on the parameters studied. The mold temperature appeared to be a very influential parameter, especially concerning material characteristics: it affects the swelling ratio, hardness, and ultimate properties, but weight and volume are only affected when the cold runner is used. The hold pressure has an effect on both the weight and volume of the ring. The type of changeover used (volume or pressure) has no effect when a cold runner is used, but affects the weight, volume, and ultimate properties of the ring, when a hot runner is used. The injection flow rate did not affect the observed characteristics.

* Mail address: Dr. M. Barbaroux, Dow Corning France SA, 300 Route des Crêtes, 06904 Sophia Antipolis Cédex, France
Received: 1996-12-17
Published Online: 2013-06-22
Published in Print: 1997-05-01

© 1997, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Third in a Series: Pioneers of Polymer Processing: Charles Goodyear
  5. Screw Extrusion/Mixing
  6. Chaotic Features of Flow in Polymer Processing Equipment-Relevance to Distributive Mixing
  7. Influence of Design on Mixing Efficiency in a Variable Intermeshing Clearance Mixer
  8. Simulation of Non-Isothermal Flow in a Modular Buss Kneader and Comparison with Experiment
  9. Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
  10. Effect of Compounding Conditions on Mechanical Properties of Glass Fiber-Reinforced Polyamide-6
  11. Die Extrusion
  12. A New Approach to Simulation of Die Flow which Incorporates the Extruder and Rotating Screw Tips in the Analysis
  13. New Aspects Concerning the Design of Coathanger Dies
  14. Film
  15. On-Line Birefringence Measurement in Film Blowing of a Linear Low Density Polyethylene
  16. Brittle Melt Rupture Phenomena in Polymer Processing
  17. Moulding
  18. Injection Molding of LDPE/BaSO4 Blends
  19. An Experimental Study of Rotational Molding of Polypropylene/Polyethylene Copolymers
  20. Determination of the Inter-Relationships Between Processing Conditions and Properties of an Injection Molded Silicone Ring Using an Experimental Design
  21. Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products
  22. Wide-Angle X-Ray, Densitometric and Microscopical Studies on Injection Molded Polypropylene Disks
https://doi.org/10.3139/217.970174

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Third in a Series: Pioneers of Polymer Processing: Charles Goodyear
  5. Screw Extrusion/Mixing
  6. Chaotic Features of Flow in Polymer Processing Equipment-Relevance to Distributive Mixing
  7. Influence of Design on Mixing Efficiency in a Variable Intermeshing Clearance Mixer
  8. Simulation of Non-Isothermal Flow in a Modular Buss Kneader and Comparison with Experiment
  9. Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
  10. Effect of Compounding Conditions on Mechanical Properties of Glass Fiber-Reinforced Polyamide-6
  11. Die Extrusion
  12. A New Approach to Simulation of Die Flow which Incorporates the Extruder and Rotating Screw Tips in the Analysis
  13. New Aspects Concerning the Design of Coathanger Dies
  14. Film
  15. On-Line Birefringence Measurement in Film Blowing of a Linear Low Density Polyethylene
  16. Brittle Melt Rupture Phenomena in Polymer Processing
  17. Moulding
  18. Injection Molding of LDPE/BaSO4 Blends
  19. An Experimental Study of Rotational Molding of Polypropylene/Polyethylene Copolymers
  20. Determination of the Inter-Relationships Between Processing Conditions and Properties of an Injection Molded Silicone Ring Using an Experimental Design
  21. Numerical Simulation of the Flow and Fiber Orientation in Reinforced Thermoplastic Injection Molded Products
  22. Wide-Angle X-Ray, Densitometric and Microscopical Studies on Injection Molded Polypropylene Disks
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