Journal
JOURNAL OF ELASTOMERS AND PLASTICS
Volume 53, Issue 1, Pages 68-82Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0095244319900375
Keywords
Ethylene-vinyl acetate copolymer; polyolefin elastomer; resilience; dynamic stiffness; loss factor
Funding
- Comtech Chemical Co., Ltd
- Hyundai Engineering Co., Ltd
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT, Korea [NRF2017R1A2B3012961]
- Ministry of Science and ICT, Korea (Brain Korea 21 Plus Program) [21A2013800002]
- National Research Foundation of Korea [2017R1A2B3012961] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study prepared EVA copolymer-based blend foams with different polymers to reduce inter-floor noise. The effects of EVA content and types of pair polymers on dynamic stiffness were investigated through measuring various properties of the blend foams.
In this study, ethylene-vinyl acetate (EVA) copolymer-based blend foams with polyolefin elastomers (POEs), low-density polyethylene, or styrenic thermoplastic elastomers were prepared as a potential resilient material for reducing inter-floor noise. Various properties of EVA blend foams were measured in order to reveal the effects of EVA content and types of pair polymers consisting of EVA blend foams on dynamic stiffness, which is one of the key factors of resilient materials, in relation to hardness, specific gravity, and resilience. These properties had not been introduced by the construction industry until now. When the EVA/POE ratio was 20/80 and the foaming ratio was 210%, dynamic stiffness presented the lowest value at 5.97 MN m(-3). However, when the resilience was <20%, dynamic stiffness was as high as 37.66 MN m(-3) at an expansion ratio of 210% even when the specific gravity was low.
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