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Journal |
Textile Coloration and Finishing |
Year / Vol., Issue, Month |
2023 / V.35,no.1,Mar |
Title |
Properties of Rubbers and Coated Fabrics according to Different Cross-linking Density of Coating Agent |
Authors |
Suhong Kim, Kisuk Sung, and Doohyun Baik |
Institution/Affiliations |
Jainpolychem Inc., Chungnam National University |
Pages/Total page |
pp.8 ~ 19 / 12 |
Language |
Korean |
Abstract |
Silicone rubber is widely used in most industries due to diverse advantages
like heat stability, UV stability, durability, chemical resistance, environment friendliness,
inertness and so on. But there is limitation to expand applications due to relatively
weak rubber strengths such as tensile strength and tear strength, especially in
fabric coating applications. The purpose of this study is to find influence of coating
agent on performances of rubber and coated fabrics and their correlation according to
different crosslinking densities of silicone rubbers. Addition cure type of silicones were
formulated using crosslinked MQ-type silicone resin consisting of M (R3SiO1/2) and Q
(SiO4/2) and linear polymers. Raw materials used were; 1) linear vinyl endblocked polymers and vinyl functional MQ resin as main polymers, 2) linear silicone hydride polymers
as crosslinkers, 3) platinum catalyst and 4) inhibitor to control curing speed.
Rubber specimens were prepared to check mechanical strength using universal testing
machine (UTM). Crosslinking density was calculated using Flory-Rhener equation using
solvent swelling method. Differential scanning calorimetry (DSC) and scanning electron
microscope (SEM-EDS) were used to characterize rubbers. Consequently, it was found
that physical properties of silicone rubbers and coated fabrics can be expected by
crosslinking density of rubbers. Silicone rubber formulations that contain 20 ~ 30 wt%
of vinyl MQ resin showed strongest balanced performances. |
Keywords |
silicone rubber, mechanical strength, cross-linking density, solvent swelling, coated fabric |
Download |
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Reference |
http://koreascience.or.kr/journal/OSGGBT.page
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