Technical Paper Archive


This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.


For older papers not listed here, please send your request, including Meeting Year, Title, Author, and Paper # to: cbrady@rubber.org


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High Resiliency Santoprene Thermoplastic Vulcanizates (TPVs)

B18 iyer high resiliency santoprene thermoplastic vulcanizates

Event: 196th Technical Meeting - Fall 2019
Location: Cleveland, OH
Date: October 08, 2019
Author: Krishnan Iyer
Paper Number: B18

Price: $20.00

  • SantopreneTM Thermoplastic vulcanizates (TPVs) are specialty reactive extrusion blends of polypropylene (PP) as the continuous phase and crosslinked EPDM rubber particles of 1-5 microns as the dispersed phase that are used in a variety of applications including automotive weather-seals, door sealants, wire and cable, hoses etc. TPVs provide the elasticity of rubber and the processability advantages of thermoplastics rendering them the materials of choice relative to thermoset rubber compounds. This paper will discuss the development of a family of step-out TPV products for a variety of applications including but not limited to automotive weatherseal glass run channels (GRC). The new TPV products will be shown to have significantly higher elasticity (e.g. lower compression set, lower tension set and higher resiliency) than commercial TPVs of similar hardness. Extrusion processability data of the new TPVs will be discussed. Surface appearance of the new TPV grades is shown to be excellent for a wide range of processing conditions and die geometries. It is concluded that the new family of TPVs has a significantly enhanced balance of mechanical properties and processability.

    Papers from 196th Technical Meeting - Fall 2019

    Items from 196th Technical Meeting - Fall 2019