TY - JOUR
T1 - 4He permeation and H2O uptake of cyanate ester resins-an alternative to commonly used epoxy resins at low temperature
AU - Nakamura, Sachiko
AU - Fujii, Takenori
AU - Matsukawa, Shoji
AU - Katagiri, Masayuki
AU - Fukuyama, Hiroshi
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2018/4/19
Y1 - 2018/4/19
N2 - Cyanate ester (CE) thermoset is a polymer with a high glass-Transition temperature of ≈ 300 °C. CE is expected to be an alternative to Stycast 1266 as a sealing and casting glue for low temperature experiments, especially for adsorption experiments where baking of the substrate at T > 100 °C before cooling is required to eliminate surface contaminations. We experimentally confirmed that thermosets of CE monomers are non-porous and absorbs/desorbs water very little from measurements of (1) 4He permeation properties at temperatures from room temperature (RT) to 77 K and of (2) weight gains (δW) after storage for days in water and in air at RT. The 4He permeation is rather large at RT but negligibly small at T 130 K where the diffusion constant of 4He in CE is vanishingly small. δW in water and air are 0.3-0.5% and 0.5-1.0%, respectively, which are much smaller than those of Stycast 1266. Therefore, cyanate ester is an excellent alternative to commonly used epoxy resins especially in surface-sensitive experiments at low temperature.
AB - Cyanate ester (CE) thermoset is a polymer with a high glass-Transition temperature of ≈ 300 °C. CE is expected to be an alternative to Stycast 1266 as a sealing and casting glue for low temperature experiments, especially for adsorption experiments where baking of the substrate at T > 100 °C before cooling is required to eliminate surface contaminations. We experimentally confirmed that thermosets of CE monomers are non-porous and absorbs/desorbs water very little from measurements of (1) 4He permeation properties at temperatures from room temperature (RT) to 77 K and of (2) weight gains (δW) after storage for days in water and in air at RT. The 4He permeation is rather large at RT but negligibly small at T 130 K where the diffusion constant of 4He in CE is vanishingly small. δW in water and air are 0.3-0.5% and 0.5-1.0%, respectively, which are much smaller than those of Stycast 1266. Therefore, cyanate ester is an excellent alternative to commonly used epoxy resins especially in surface-sensitive experiments at low temperature.
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U2 - 10.1088/1742-6596/969/1/012080
DO - 10.1088/1742-6596/969/1/012080
M3 - Conference article
AN - SCOPUS:85046094475
SN - 1742-6588
VL - 969
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012080
T2 - 28th International Conference on Low Temperature Physics, LT 2018
Y2 - 9 August 2017 through 16 August 2017
ER -