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Impact of Plasticizer Loading in NBR

Plasticizer levels play a critical role in determining low-temperature flexibility and overall compound performance. This study explores the effects of DOA loading from 10 to 50 phr, measuring durometer, tensile strength, elongation, tear resistance, low temperature brittleness, and Gehman torsional properties.

Higher plasticizer concentrations improved flexibility, with some formulations maintaining non-brittle performance as low as -60°C — offering valuable insights for cold-weather applications.

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Additional Research Data Papers Available

A direct comparison of common fillers — carbon black, silica, clay, and others — used at 50 phr in an EPDM formula. This study evaluates rheology, durometer, tensile strength, elongation, tear strength, rebound, viscosity, and scorch to understand how filler type impacts compound performance. Compares several grades of virgin carbon black, silica, clay and others.

This study examines the individual effects of thiazole, thiuram, dithiocarbamate, thiourea, sulfur donor, and sulfonamide accelerators in EPDM. Testing includes identifying the activation temperature of each accelerator and its impact on compound curing behavior.

Multiple virgin carbon black grades compared at various loadings to evaluate electrical conductivity in SBR. Rheology, durometer, tensile strength, percent elongation tested in addition to volume conductivity.

NBRs of equal viscosity and acrylonitrile content from various suppliers evaluated in a multitude of testing, including aging, low temperature testing, and processing simulations. Determine which suppliers’ NBR best fits specific applications.

Durometer, tensile strength, elongation, tear strength, low temperature brittleness, and Gehman torsional low temperature properties evaluated using DOA, DOS, DHIN, and DOP for a direct comparison of these plasticizers.

Durometer, tensile strength, elongation, tear strength, low temperature brittleness, and Gehman torsional low temperature properties evaluated using DOA, DOS, DHIN, and DOP for a direct comparison of these plasticizers.

This study compares NBR with 28%, 34%, and 41% ACN, evaluating key properties like tensile strength, elongation, durometer, and low-temp brittleness. Higher ACN boosts strength and reduces compression set but sacrifices low-temperature flexibility—revealing the trade-offs in NBR design.