Abstract Foamed rubber with a mixed cellular microstructure is compressible material used for various sealing applications in the automotive industry. For technical optimization, sufficiently precise model required. Here description porous elastic and viscoelastic response of low density foamed proposed adapted to ethylene propylene diene monomer (EPDM)-based rubber. The based on spherical shel...

Industry standards for shielded medium-voltage cables (5–46 kV) have recently been revised, changing the dc test voltages for field tests and test durations and limiting tests to newly installed cables. The following industry groups’ specifications and standards provide different guidelines for dc field tests for cross-linked polyethylene and ethylene propylene rubber insulated cables: IEEE, In...

To the Editor: We wish to substantiate the important observations of LeGatt and Tisdell (1) cautioning against the use of propylene glycol as an internal standard for quantifying ethylene glycol. A 32-yearold woman presented to our emergency department in an agitated state after the ingestion of multiple drugs in an attempted suicide. Gastric lavage and charcoal were administered as well as int...

The dimensioning of injection heads for the extrusion of rubber profiles is exclusively based on empiric knowledge of the non-linear flow behaviour of elastomers. The swelling of the extrudate when emerging from a capillary is typical for viscoelastic fluids, such as polymers and rubber blends, respectively. Therefore, the experimental investigation and numerical treatment of this swelling beha...

Low-temperature reactive mixing of controlled electron beam modified Polytetrafluoroethylene (PTFE) nanopowder with Ethylene-Propylene-Diene-Monomer (EPDM) rubber produced PTFE coupled EPDM rubber compounds with desired physical properties. The radiation-induced chemical alterations in PTFE nanopowder, determined by electron spin resonance (ESR) and Fourier transform infrared (FTIR) spectroscop...

In this study, rice-straw (RS) filled high density polyethylene (HDPE) composites were manufactured by extrusion and injection molding. Three compatibilizers, which are unfunctionalized ethylene/propylene copolymer (uEPR), maleic anhydride grafted EPR (EPR-g-MA) and PE-g-MA, and their combinations were introduced to strengthen fibermatrix interphase. The mechanical and morphological properties ...

A continuous application of ethylene (10 mul/l) and propylene (500 mul/l) to potato tubers (Solanum tuberosum L.) resulted in an upsurge of respiration and a concomitant rise in peroxides. When applied in 100% O(2), the effect of ethylene and propylene on respiration and peroxide formation was augmented. Hydrogen cyanide (500 mul/l) mimicked the action of ethylene and propylene inducing a respi...

Abstract As the key components of sealing applications, rubber seals are subject to complicated environmental conditions during service lifetime. In this study, aging three typical materials, ethylene–propylene–diene monomer rubber, liquid silicone and fluorine was tested under different high- low-temperature cycle environments. The experimental results confirm that reciprocating temperature ca...

This paper summarises the results of radon diffusion coefficient measurements in 360 common waterproof materials available throughout Europe. The materials were grouped into 26 categories according to their chemical composition. It was found that the diffusion coefficients of materials used for protecting houses against radon vary within eight orders from 10(-15) to 10(-8) m(2) s(-1). The lowes...