Open AccessEffect of Type and Content of Blowing Agent on Properties of NR/EPDM/EVA Foam
Author(s) -
Bunsreyneang Kim,
Phattarawadee Nunanan,
K Hancharoen,
Kawahara Seiichi,
Kanoktip Boonkerd
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2175/1/012018
Subject(s) - materials science , blowing agent , natural rubber , composite material , ultimate tensile strength , supercell , porosity , thermal conductivity , thunderstorm , oceanography , polyurethane , geology
This research aimed to study the influence of type and content of blowing agents on the properties of rubber foam NR/EPDM/EVA. Supercell DP, supercell RC 720, and EW5 were used here as a blowing agent. The content of the blowing agent was varied from 3 phr to 4 and 5 phr. The results showed that supercell RC 720 and OBSH were not suitable for this trinary rubber foam due to the absence of even porous structure, while the supercell DP gave the even porous structure throughout the sample and the lowest density. It was found that increasing supercell DP loading led to the increase in pore size, thermal conductivity but the decrease in the density, tensile strength, and elastic recovery of rubber foam. Owing to the lowest thermal conductivity, it can be inferred here that supercell DP at 5 phr was suitable to produce rubber foam from NR blended with EPDM and EVA for a ceiling board application.