Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 139, Issue 32, Pages -Publisher
WILEY
DOI: 10.1002/app.52478
Keywords
blends; phase behavior; resins; surfaces and interfaces; thermosets
Categories
Funding
- National Natural Science Foundation of China [51977118]
Ask authors/readers for more resources
In this study, 3-aminopropyltriethoxysilane was used as an intermediate to prepare silicone prepolymer, which was self-assembled in the cycloaliphatic epoxy resin (CEP) to improve both toughness and hydrophobic properties. The tensile strength and static contact angle of CEP were enhanced significantly when containing 10 phr of silicone prepolymer, mainly influenced by the distribution of the dispersed phase and surface tension.
To improve the toughness and hydrophobic property of the cycloaliphatic epoxy resin (CEP), which is vital to application in high voltage insulation of outdoor transmission lines, 3-aminopropyltriethoxysilane was used as the intermediate to prepare the silicone prepolymer by the interaction of the end groups of the CEP and the hydroxy-terminated polydimethylsiloxane. The results showed that the silicone prepolymer segments were self-assembled to form solid dispersion phases distributed uniformly in the CEP. The size of the dispersed phase gradually increased in CEP with more concentration of silicone prepolymer. The tensile strength and static contact angle of the CEP were simultaneously improved when content of the silicone prepolymer reached 10 phr. The tensile strength and static contact angle were mainly affected by the distribution of dispersed phase and by surface tension, respectively. With the increase of Si/C on the surface, surface tension decreased and tended to saturate. Due to small molecule migration, the CEP containing silicone prepolymer was also endowed with hydrophobic transfer properties. This paper affords a method to simultaneously enhance toughness and hydrophobic properties of CEP and deepens fundamental understanding of hydrophobic properties.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available