Novel hyperbranched waterborne polyurethane-urea/silica hybrid coatings and their characterizations

2011 ◽  
Vol 60 (10) ◽  
pp. 1504-1513 ◽  
Author(s):  
Kishore K Jena ◽  
Sambita Sahoo ◽  
Ramanuj Narayan ◽  
Tejraj M Aminabhavi ◽  
KVSN Raju
Keyword(s):  
Waterborne Polyurethane ◽  
Hybrid Coatings ◽  
Silica Hybrid

Anti-corrosion properties of oligoaniline modified silica hybrid coatings for low-carbon steel

2018 ◽  
Vol 235 ◽  
pp. 61-70 ◽  
Author(s):  
Yuwei Ye ◽  
Dawei Zhang ◽  
Zhiyong Liu ◽  
Wei Liu ◽  
Haichao Zhao ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Hybrid Coatings ◽  
Low Carbon ◽  
Modified Silica ◽  
Corrosion Properties ◽  
Silica Hybrid

Polydimethylsiloxane/silica hybrid coatings protecting Kapton from atomic oxygen attack

2008 ◽  
Vol 112 (3) ◽  
pp. 1093-1098 ◽  
Author(s):  
Shuwang Duo ◽  
Meishuan Li ◽  
Ming Zhu ◽  
Yanchun Zhou
Keyword(s):  
Atomic Oxygen ◽  
Hybrid Coatings ◽  
Silica Hybrid

Advanced Organic-inorganic Hybrid Coatings Having Both High Gas Barrier Properties and Abrasion Resistance

2006 ◽  
Vol 951 ◽  
Author(s):  
Katsunori Nishiura ◽  
Toshihiko Takaki ◽  
Makoto Nakaura
Keyword(s):  
Polymer Films ◽  
Abrasion Resistance ◽  
Sol Gel ◽  
Barrier Properties ◽  
Silica Content ◽  
Hybrid Coatings ◽  
Gas Barrier ◽  
Inorganic Hybrid ◽  
Gas Barrier Properties ◽  
Silica Hybrid

ABSTRACTIt is important to develop flexible transparent polymer films having high gas barrier properties and abrasion resistance because new applications involving transparent polymer films for flat panel displays require these properties. We report on organic-inorganic hybrid coatings of polyvinylalcohol (PVA)/polyacrylicacid (PAA)-silica, which have high gas barrier properties almost equivalent to those achieved by the dry coating process. The hybrid coatings were prepared by the sol-gel reaction of alkoxysilane in a PVA/PAA aqueous solution. In order to obtain transparent coating films, 3-aminopropyltrimethoxysilane (APTMOS) was used as a compatibilizer in the sol-gel reaction of tetramethoxysilane (TMOS). No structure could be seen in the TEM of the cross-sectional coating layer, indicating that polymers and silica were mixed homogeneously. PVA/PAA-silica hybrid coatings were shown to have excellent abrasion resistance based on the ΔHaze index. O2 permeability of PVA/PAA-silica hybrid coatings evaluated by MOCON under the conditions of 23°C, 90% RH was lower than that of PVA/PAA polymer coating, which suggests that silica affects the barrier property of the hybrid coating in humid conditions. Furthermore, O2 permeability decreased as silica content increased in the coatings. Unexpectedly, high gas barrier properties appeared when the silica content exceeded 50 wt%. From the result of element distribution analysis measured by EF-TEM, it was confirmed that phase separation occurred between PVA/PAA and silica on a nanometer scale and silica forms continuous structures, which are considered to suppress O2 permeability.

Polyimide–silica hybrid coatings: morphological, mechanical, and thermal investigations

2007 ◽  
Vol 18 (6) ◽  
pp. 490-496 ◽  
Author(s):  
S. Karataş ◽  
N. Kayaman-Apohan ◽  
H. Demirer ◽  
A. Güngör
Keyword(s):  
Hybrid Coatings ◽  
Thermal Investigations ◽  
Silica Hybrid

Green fabrication of ultraviolet curable epoxy acrylate-silica hybrid coatings

2017 ◽  
Vol 109 ◽  
pp. 38-44 ◽  
Author(s):  
Fengguo Liu ◽  
Linqing Miao ◽  
Ying Wang ◽  
Xiangxin Xue ◽  
He Yang
Keyword(s):  
Hybrid Coatings ◽  
Epoxy Acrylate ◽  
Ultraviolet Curable ◽  
Silica Hybrid
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