Effects of -CH2CH2CF3 on properties of RTV polysiloxane rubber: Processability, thermal stability, and oil/solvent resistance

Bo Li; Shuangjun Chen; Jun Zhang

doi:10.1002/app.39708

Effects of -CH₂CH₂CF₃ on properties of RTV polysiloxane rubber: Processability, thermal stability, and oil/solvent resistance

Bo Li, Shuangjun Chen, Jun Zhang

College of Materials Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Room temperature vulcanizing fluorosilicone rubbers (FSRs) were prepared from polydimethylsiloxane (PDMS), vinyl fluorosilicone-oil (VFS-oil), and precipitated silica (PDMS/VFS/SiO₂). Rheological tests showed appropriate processing condition could be obtained when shear rate > 10 s^-1. Mechanical tests indicated that tensile strength and elongation at break were not much affected by VFS-oil and no decline was observed after being aged in 70 °C ASTM 1# oil. The -CF₃ group could not only increase oil-resistance, but also decrease surface energy, which were proved by ATR-FTIR and contact angle tests. The PDMS oil immersion tests showed that the higher the content of VFS-oil, the better oil resistance can be obtained. The solvent-resistance tests indicated that the VFS-oil improved resistance to nonpolar/low-polar solvent. TGA results showed that the increasing content of VFS-oil could slightly decrease FSRs' thermal stability but increase FSRs' residual mass ratio at 790°C.

Original language	English
Article number	39708
Journal	Journal of Applied Polymer Science
Volume	131
Issue number	1
DOIs	https://doi.org/10.1002/app.39708
State	Published - 5 Jan 2014

Keywords

fluorosilicone rubber (FSR)
oil resistance
room temperature vulcanizing (RTV)
thermal degradation
trifluoropropyl group

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title = "Effects of -CH2CH2CF3 on properties of RTV polysiloxane rubber: Processability, thermal stability, and oil/solvent resistance",

abstract = "Room temperature vulcanizing fluorosilicone rubbers (FSRs) were prepared from polydimethylsiloxane (PDMS), vinyl fluorosilicone-oil (VFS-oil), and precipitated silica (PDMS/VFS/SiO2). Rheological tests showed appropriate processing condition could be obtained when shear rate > 10 s-1. Mechanical tests indicated that tensile strength and elongation at break were not much affected by VFS-oil and no decline was observed after being aged in 70 °C ASTM 1# oil. The -CF3 group could not only increase oil-resistance, but also decrease surface energy, which were proved by ATR-FTIR and contact angle tests. The PDMS oil immersion tests showed that the higher the content of VFS-oil, the better oil resistance can be obtained. The solvent-resistance tests indicated that the VFS-oil improved resistance to nonpolar/low-polar solvent. TGA results showed that the increasing content of VFS-oil could slightly decrease FSRs' thermal stability but increase FSRs' residual mass ratio at 790°C.",

keywords = "fluorosilicone rubber (FSR), oil resistance, room temperature vulcanizing (RTV), thermal degradation, trifluoropropyl group",

author = "Bo Li and Shuangjun Chen and Jun Zhang",

year = "2014",

month = jan,

day = "5",

doi = "10.1002/app.39708",

language = "英语",

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journal = "Journal of Applied Polymer Science",

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T1 - Effects of -CH2CH2CF3 on properties of RTV polysiloxane rubber

T2 - Processability, thermal stability, and oil/solvent resistance

AU - Li, Bo

AU - Chen, Shuangjun

AU - Zhang, Jun

PY - 2014/1/5

Y1 - 2014/1/5

N2 - Room temperature vulcanizing fluorosilicone rubbers (FSRs) were prepared from polydimethylsiloxane (PDMS), vinyl fluorosilicone-oil (VFS-oil), and precipitated silica (PDMS/VFS/SiO2). Rheological tests showed appropriate processing condition could be obtained when shear rate > 10 s-1. Mechanical tests indicated that tensile strength and elongation at break were not much affected by VFS-oil and no decline was observed after being aged in 70 °C ASTM 1# oil. The -CF3 group could not only increase oil-resistance, but also decrease surface energy, which were proved by ATR-FTIR and contact angle tests. The PDMS oil immersion tests showed that the higher the content of VFS-oil, the better oil resistance can be obtained. The solvent-resistance tests indicated that the VFS-oil improved resistance to nonpolar/low-polar solvent. TGA results showed that the increasing content of VFS-oil could slightly decrease FSRs' thermal stability but increase FSRs' residual mass ratio at 790°C.

AB - Room temperature vulcanizing fluorosilicone rubbers (FSRs) were prepared from polydimethylsiloxane (PDMS), vinyl fluorosilicone-oil (VFS-oil), and precipitated silica (PDMS/VFS/SiO2). Rheological tests showed appropriate processing condition could be obtained when shear rate > 10 s-1. Mechanical tests indicated that tensile strength and elongation at break were not much affected by VFS-oil and no decline was observed after being aged in 70 °C ASTM 1# oil. The -CF3 group could not only increase oil-resistance, but also decrease surface energy, which were proved by ATR-FTIR and contact angle tests. The PDMS oil immersion tests showed that the higher the content of VFS-oil, the better oil resistance can be obtained. The solvent-resistance tests indicated that the VFS-oil improved resistance to nonpolar/low-polar solvent. TGA results showed that the increasing content of VFS-oil could slightly decrease FSRs' thermal stability but increase FSRs' residual mass ratio at 790°C.

KW - fluorosilicone rubber (FSR)

KW - oil resistance

KW - room temperature vulcanizing (RTV)

KW - thermal degradation

KW - trifluoropropyl group

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Effects of -CH₂CH₂CF₃ on properties of RTV polysiloxane rubber: Processability, thermal stability, and oil/solvent resistance

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