Alkoxysilane oligomer modified epoxide primers

Elif Alyamac; Hua Gu; Mark D. Soucek; Shuyan Qiu; Rudolph G. Buchheit

doi:10.1016/j.porgcoat.2011.11.012

Alkoxysilane oligomer modified epoxide primers

Elif Alyamac, Hua Gu, Mark D. Soucek, Shuyan Qiu, Rudolph G. Buchheit

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

33 Scopus citations

Abstract

Telechelic resins with reactive end groups (epoxy phosphate and epoxy ester) were synthesized using bisphenol-A (BPA) epoxide. The bisphenol-A based epoxide, the epoxy phosphate, and the epoxy ester were all modified with tetraethylorthosilicate (TEOS) oligomers, which were prepared through the hydrolysis and condensation of TEOS monomer with water under acidic condition. The epoxide/polysilicate (organic/inorganic) hybrid systems were characterized systematically, using FTIR, ¹H, ¹³C, ³¹P, and ²⁹Si NMR, and MALDI-TOF. The modified epoxides were thermally cured with a melamine-formaldehyde resin, cast on steel substrates. The coating performance of the modified epoxides was evaluated by pencil hardness, crosshatch adhesion, reverse and direct impact resistance, mandrel bending, and pull-off adhesion. Viscoelastic properties of the hybrid systems were also evaluated as a function of polysilicate content. Corrosion performance was evaluated via salt spray (fog) test for 264 h. Salt spray analysis revealed that inorganically modified epoxides provided improvement over the unmodified epoxide resins with respect to both corrosion resistance and adhesion to steel substrates.

Original language	English
Pages (from-to)	67-81
Number of pages	15
Journal	Progress in Organic Coatings
Volume	74
Issue number	1
DOIs	https://doi.org/10.1016/j.porgcoat.2011.11.012
State	Published - May 2012

Keywords

Coating properties
Corrosion
Dynamic mechanical properties
Epoxides
Fatty acids
Phosphates
Salt spray
Sol-gel

ASJC Scopus subject areas

General Chemical Engineering
Surfaces, Coatings and Films
Organic Chemistry
Materials Chemistry

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10.1016/j.porgcoat.2011.11.012

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title = "Alkoxysilane oligomer modified epoxide primers",

abstract = "Telechelic resins with reactive end groups (epoxy phosphate and epoxy ester) were synthesized using bisphenol-A (BPA) epoxide. The bisphenol-A based epoxide, the epoxy phosphate, and the epoxy ester were all modified with tetraethylorthosilicate (TEOS) oligomers, which were prepared through the hydrolysis and condensation of TEOS monomer with water under acidic condition. The epoxide/polysilicate (organic/inorganic) hybrid systems were characterized systematically, using FTIR, 1H, 13C, 31P, and 29Si NMR, and MALDI-TOF. The modified epoxides were thermally cured with a melamine-formaldehyde resin, cast on steel substrates. The coating performance of the modified epoxides was evaluated by pencil hardness, crosshatch adhesion, reverse and direct impact resistance, mandrel bending, and pull-off adhesion. Viscoelastic properties of the hybrid systems were also evaluated as a function of polysilicate content. Corrosion performance was evaluated via salt spray (fog) test for 264 h. Salt spray analysis revealed that inorganically modified epoxides provided improvement over the unmodified epoxide resins with respect to both corrosion resistance and adhesion to steel substrates.",

keywords = "Coating properties, Corrosion, Dynamic mechanical properties, Epoxides, Fatty acids, Phosphates, Salt spray, Sol-gel",

author = "Elif Alyamac and Hua Gu and Soucek, \{Mark D.\} and Shuyan Qiu and Buchheit, \{Rudolph G.\}",

year = "2012",

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doi = "10.1016/j.porgcoat.2011.11.012",

language = "English",

volume = "74",

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T1 - Alkoxysilane oligomer modified epoxide primers

AU - Alyamac, Elif

AU - Gu, Hua

AU - Soucek, Mark D.

AU - Qiu, Shuyan

AU - Buchheit, Rudolph G.

PY - 2012/5

Y1 - 2012/5

N2 - Telechelic resins with reactive end groups (epoxy phosphate and epoxy ester) were synthesized using bisphenol-A (BPA) epoxide. The bisphenol-A based epoxide, the epoxy phosphate, and the epoxy ester were all modified with tetraethylorthosilicate (TEOS) oligomers, which were prepared through the hydrolysis and condensation of TEOS monomer with water under acidic condition. The epoxide/polysilicate (organic/inorganic) hybrid systems were characterized systematically, using FTIR, 1H, 13C, 31P, and 29Si NMR, and MALDI-TOF. The modified epoxides were thermally cured with a melamine-formaldehyde resin, cast on steel substrates. The coating performance of the modified epoxides was evaluated by pencil hardness, crosshatch adhesion, reverse and direct impact resistance, mandrel bending, and pull-off adhesion. Viscoelastic properties of the hybrid systems were also evaluated as a function of polysilicate content. Corrosion performance was evaluated via salt spray (fog) test for 264 h. Salt spray analysis revealed that inorganically modified epoxides provided improvement over the unmodified epoxide resins with respect to both corrosion resistance and adhesion to steel substrates.

AB - Telechelic resins with reactive end groups (epoxy phosphate and epoxy ester) were synthesized using bisphenol-A (BPA) epoxide. The bisphenol-A based epoxide, the epoxy phosphate, and the epoxy ester were all modified with tetraethylorthosilicate (TEOS) oligomers, which were prepared through the hydrolysis and condensation of TEOS monomer with water under acidic condition. The epoxide/polysilicate (organic/inorganic) hybrid systems were characterized systematically, using FTIR, 1H, 13C, 31P, and 29Si NMR, and MALDI-TOF. The modified epoxides were thermally cured with a melamine-formaldehyde resin, cast on steel substrates. The coating performance of the modified epoxides was evaluated by pencil hardness, crosshatch adhesion, reverse and direct impact resistance, mandrel bending, and pull-off adhesion. Viscoelastic properties of the hybrid systems were also evaluated as a function of polysilicate content. Corrosion performance was evaluated via salt spray (fog) test for 264 h. Salt spray analysis revealed that inorganically modified epoxides provided improvement over the unmodified epoxide resins with respect to both corrosion resistance and adhesion to steel substrates.

KW - Coating properties

KW - Corrosion

KW - Dynamic mechanical properties

KW - Epoxides

KW - Fatty acids

KW - Phosphates

KW - Salt spray

KW - Sol-gel

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Alkoxysilane oligomer modified epoxide primers

Abstract

Keywords

ASJC Scopus subject areas

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