"radiation resistant epdm rubber"

Preparation of EPDM Flame-Resistant Cable Materials ...

The prepared method of EPR cable materials with radiation resistant, low smoking and halogen-free flame retardant, China Rubber Science and Technology Market, (2009)17. [11] Li T, Zhang L Q., Study on Application of EPDM and prepared of novel blend, Beijing Uni. Chem. Technol., (2006) 13-27.

EPDM rubber

EPDM rubber is a very elastic material that has a high resistance to UV radiation. The material also has good resistance to ozone, low and high temperatures, and has a high resistance to oxidation. EPDM rubber has a black color, is resistant to aging, so it is …

Radiation Resistance of Elastomers | IEEE Journals ...

2021-9-21 · Various data has indicated that some elastomers have much higher radiation resistance than Viton. Nine samples of elastomers were irradiated with gamma rays. Two Ethylene Propylene Diene compounds, EPDM''s, were found to exhibit acceptable properties for o-rings after radiation levels of 5×108 rads, while Viton failed at 1×107 rads. Vacuum tests also were favorable so EPDM o-rings …

Radiation resistance of elastomeric and lubricating ...

2018-11-22 · Nichias EPDM-B, EP-176, radiation resistant up to 1.2 MGy (gamma fields) with excellent vacuum behavior. Aldo Zenoni, Brescia University, CERN January, 25, 2018 24 Predictive capability of the performed tests on elastomers • The predicting capability of accelerated aging tests in radiation environment is influenced by

EPDM foam: the best for use in sunlight | Custom-made by …

EPDM is a very weather-resistant raw material, making this foam rubber highly resistant to UV radiation and ozone. These properties ensure a long life span when the material is used outdoors. In addition to UV radiation and ozone, it is also resistant to water and other fluids.

Compounding SBR for Radiation Resistance | Rubber ...

The radiation resistance of butadiene-styrene cold rubber vulcanizates reinforced with carbon black can be increased materially by increasing the styrene content of the rubber, by extension of rubber with an aromatic oil, by incomplete curing with an accelerated sulfur vulcanization system, and by incorporation of retarders of radiation damage.

High‐energy radiation‐resistant vulcanizates. II. EPDM ...

1994-8-15 · High‐energy radiation‐resistant vulcanizates. II. EPDM. Chaitanya S. Shah. Materials Science Centre, Indian Institute of Technology, Powai, Bombay 400 076, India. ... (ENB)-based ethylene propylene diene rubber (EPDM) depending on ENB content of EPDM and type/content of peroxides used in vulcanization ...

Degradation of elastomer by heat and/or radiation ...

2007-12-1 · EPDM-1 had good heat resistant property, but ultimate elongation decreased rapidly by γ-ray exposure. On the other hand, EPDM-6 did not have durability for thermal aging; it had excellent radiation resistant property. The dose at which ultimate elongation of EPDM-6 decreased from 576% (original value) to was at about 6 MGy.

Ageing studies of ethylene propylene diene monomer …

2007-11-26 · The ageing behavior due to the effects of heat, ozone, γ- radiation, and water on ethylene propylene diene monomer rubber/styrene butadiene rubber (EPDM/SBR) blends was …

Radiation Resistant Modification of Rubber Blends with ...

To improve the radiation resistance of dimethyl silicone rubber (DMS), the effects of blending with ethylene-propylene-diene terpolymer (EPDM) or tetrafluoroethylene-propylene copolymer (Copoly (TFE-P)) were studied. DMS was mixed mechanically with one of the above rubbers and a radical initiator.

EPDM–chlorobutyl rubber blends in γ‐radiation and ...

2017-4-29 · In nuclear applications, ethylene propylene diene monomer (EPDM) rubber is the material of choice as gaskets and O-rings due to its radiations resistance. In nuclear fuel reprocessing, in addition to radiation, the elastomeric components have to withstand paraffinic hydrocarbons as well. But, EPDM has poor resistance to hydrocarbons.

Radiation-resistant elastomer seals

2019-10-29 · GROUPE LATTY, a French designer and manufacturer of industrial seals for harsh industrial environments, has released a range of 80 Shore EPDM elastomer seals. The PMUC-certified, radiation-resistant seals are developed for nuclear applications and are qualified for accident conditions with a radiation resistance of up to 1700 kilogray (kGy).

4.8 Degradation of Elastomers by Heat and/or Radiation

2010-5-10 · EPDM-3 and acrylic elastomer(AC-l) have better radiation resistant properties on the view point of elongation retained. Thus, appropriately compounded EPDM and acrylic rubber were found to have excellent radiation resistant properties compared with fluorine containing heat resistant elastomers. …

Rubber Material Selection Guide EPDM or Ethylene …

2005-4-12 · Rubber Material Selection Guide EPDM or Ethylene Propylene Abbreviation EP, EPR, EPT, EPDM ASTM D-2000 Classification AA, BA, CA, DA ... Radiation Resistance Good to Excellent Steam Resistance Excellent Sunlight Resistance Excellent Taste Retention Good to Excellent

Gamma Compatible Materials

2010-6-8 · HDPE, UHMPE, UHMWPE) All polyethylene radiation stable, low density most resistant. Polyimides 10,000 Polymethylpentene 20 Subject to oxidation degradation. Avoid use. Polyphenylene Sulfide 1,000 Polypropylene, Radiation Stabilized Homopolymer 20-50 Subject to orientation embrittlement. Validate with real time aging.

Radiation Resistance of Rubber Compounds for Gaskets ...

2012-7-10 · Keywords: Gaskets, EPDM, Silicone rubber, Fluoro rubber, Compression set, Radiation, Swelling test, FTIR Abstract After the earthquake and tsunami that severely damaged the nuclear reactor at Fukushima, Japan, the importance of the resistance of materials, particularly during loss-of-coolant accidents (LOCA), is receiving increasing attention. Seal

Evaluation of EPDM rubber for high voltage insulator ...

1995-10-25 · This paper describes the fundamental characteristics of EPDM (ethylene propylene rubber) which is applied as a high voltage insulation material. Also recently, polymer compounds have been applied as high voltage insulation materials. EPDM rubber is inferior in weather resistance to silicone rubber. However, we found that the addition of carbon black results in an excellent weathering …

Radiation resistance of elastomers (Conference) | OSTI.GOV

@article{osti_6298995, title = {Radiation resistance of elastomers}, author = {Lee, G}, abstractNote = {Various data has indicated that some elastomers have much higher radiation resistance than Viton. Nine samples of elastomers were irradiated with gamma rays. Two Ethylene Propylene Diene compounds, EPDM''s, were found to exhibit acceptable properties for o-rings after radiation levels of ...

Neoprene vs EPDM rubber

EPDM rubber is also the popular choice for providing electrical insulation and noise resistance due to its cost. In contrast, neoprene is much better at providing thermal insulation and is fire, chemical and oil resistant. As a result, it''s often more expensive than EPDM. With that said, EPDM does outperform neoprene in high-temperature ...

Shieldseal Elastomers for Use with Ionizing Radiation ...

Shieldseal® 662 - EPDM-based elastomer for general applications where ionising radiation is present. Nominal hardness 70 IRHD. Shieldseal® 621 - nitrile elastomer (NBR) designed for radiation resistance. Also excellent resistance to mineral oils, water/glycol hydraulic fluids, and a wide range of chemicals. Nominal hardness 60 IRHD. Behind ...

Material Consideration Radiation Processing

2018-9-20 · 2 ANSI/AAMI/ISO 11137-1, Sterilization of health care products—Radiation—Part 1: Requirements for development, validation, and routine control of a sterilization process for medical devices. 3 Genova, Hollis, Crowell and Schady, "A Procedure for Validating the Sterility of an Individual Gamma Radiation Sterilized Production Batch,"

Radiation resistance of elastomeric O-rings in mixed ...

2017-11-15 · Four elastomeric compounds used for vacuum O-rings, one fluoroelastomer polymer (FPM) based and three ethylene propylene diene monomer rubber (EPDM) based, presently available on the market have been selected for the test. One EPDM …

Influence of gamma radiation on EPDM compounds properti…

2016-10-31 · EPDM rubber is classified as radiation-resistant, because EPDM structure includes in its principal chain totally saturated bonds, and consequently is able to …

Radiation resistance of elastomeric O-rings in mixed ...

Four elastomeric compounds used for vacuum O-rings, one fluoroelastomer polymer (FPM) based and three ethylene propylene diene monomer rubber (EPDM) based, presently available on the market have been selected for the test. One EPDM is rated as radiation resistant in gamma fields, while the other elastomers are general purpose products.

Radiation Resistance of Rubber Compound for Gasket | …

2012-2-21 · In fact, EPDM compounds have good results of compression set after radiation exposure and Silicone rubber does not have good results. It had been predicted that breakage and crosslinking of elastomer chemical structure caused by radiation would have been more serious on Silicone rubber. On the other hand, it has been estimated that breakage of ...

Preparation and characterization of γ-ray radiation ...

2016-1-29 · A novel composites based on ethylene-propylene-diene monomer (EPDM) rubber for gamma shielding were prepared by using carbon blacks (CB) and ball milled PbWO4 (PWO) powder as fillers. The microstructure of ball milled PWO powder which has a uniform morphology in these composites was characterized by scanning electron microscope (SEM), X-ray diffraction (XRD). The mechanical and …

A. Zenoni, F. Bignotti, A. Donzella, G. Donzella, M ...

2019-5-17 · monomer rubber (EPDM) based, presently available on the market have been selected for the test. One EPDM is rated as radiation resistant in gamma fields, while the other elastomers are general purpose products. Particular care has been devoted to …

Thermal Stability of Radiation Vulcanized EPDM Rubber ...

2008-6-26 · Raw EPDM rubber was mixed with 1 phr of SARET 517 as coagent and 50 phr of HAF-carbon black together with 0.5 phr of different types of the antioxidants, separately, using Plasti-corder type PL-2100 and mixer type 350S from Brabender. The time of mixing was 10 min at 80 oC, followed by using rubber mill at the same temperature.

Why EPDM rubber flooring for kindergarten

EPDM granules are produced from synthetic rubber, which can produce a variety of colors and are resistant to ultraviolet radiation and general chemical reactions with their excellent performance. Used in the kindergarten rubber flooring material, it can increase its flexibility and prolong its life.

Characteristic properties of Silicone Rubber Compounds

2016-8-24 · Radiation resistance 13 Vibration absorption 14 Releasability and Non-corrosivity 14 Physiologically inert 14 The fine properties of silicone rubber 15 2 Meeting the increasingly diverse and sophisticated needs of industry with the unique properties of silicone rubbers

Radiation Resistance of Rubber Compounds for Gaskets ...

2013-10-30 · In fact, EPDM compounds exhibited good compression set test results after radiation exposure, whereas silicone rubber compounds did not. In the current study, we evaluate the changes to the characteristics of rubber under more severe conditions, specifically when gamma ray exposure is over 3 MGy and exposure time is over 400 h.