Synthesis, characterization and thermal properties of novel epoxy containing silicon and phosphorus nanocomposites by sol–gel method

Chiang, Chin‐Lung; Chen‐Chi, M.

doi:10.1016/s0014-3057(02)00123-4

Cited by 154 publications

(36 citation statements)

References 17 publications

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“…This is mainly due to the mild conditions, such as low temperature and pressure [1][2][3]. In addition, the sol-gel process is a convenient method for preparing oxide films from alkoxysilyl group containing materials via continuous reaction steps of hydrolysis and condensation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and thermal properties of inorganic-organic hybrid

Da¹,

Zhang²,

Wu³

et al. 2007

Express Polym. Lett.

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Abstract. Poly (St-MAn-APTES)/silica hybrid materials were successfully prepared from styrene (St), maleic anhydride (MAn) and tetraethoxysilane (TEOS) in the presence of a coupling agent 3-aminopropyltriethoxysilane (APTES), by freeradical solution polymerization and in situ sol-gel process. The TEOS content varied from 0 to 25 wt%. Fourier transform infrared spectroscopy and 29 Si nuclear magnetic resonance spectroscopy were used to characterize the structure of the hybrids (condensed siloxane bonds designated as Q 1 , Q 2 , Q 3 , Q 4 , with 3-aminopropyltriethoxysilane having mono-, di-, tri, tetra-substituted siloxane bonds designated as T 1 , T 2 and T 3 ). The results revealed that Q 3 , Q 4 and T 3 were the major microstructure elements in forming a network structure. The hybrid materials were also characterized by the methods of solvent extraction, Transmission Electron Microscopy (TEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) for determining the gel contents, particle size and thermal performance. The results showed that gel contents in the hybrid materials were much higher, the SiO2 phase were well dispersed in the polymer matrix, silicon dioxide existed at nanoscale in the composites, which had excellent thermal stability.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and thermal properties of inorganic-organic hybrid

Da¹,

Zhang²,

Wu³

et al. 2007

Express Polym. Lett.

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“…Usually, most organic-inorganic hybrid materials are thermally cured [3][4][5], but some of them are cured by UV light yet [6][7][8][9][10][11][12]. This class of materials are very promising in the UV cured coating field because it combines the advantages of traditional hybrid materials and UV-curing technique, mainly including highspeed process, lower energy consumption as well as the curing process occurs at ambient temperature, lower process costs, high chemical stability of materials and lower VOCs (volatile organic compounds) of UV-curing technique [13,14], and the improvement of thermal and mechanical properties etc., due to micro-scale homogeneous network of the organic-inorganic hybrid material [1,15].…”

Section: Introductionmentioning

confidence: 99%

Preparation and stability of silica sol/TPGDA dispersions and its application in the UV-curable hybrid coatings for fire protection

Shang

Hang

Jin

et al. 2013

J Sol-Gel Sci Technol

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A series of silica sols modified by c-methacryloxypropyltrimethoxysilane (MPS) were synthesized by the acid-catalyzed sol-gel method, and then the solvent in these sols were extracted under several vacuum distillation conditions. The stability of the sol after the distillation can be improved by means of increasing the dosage of MPS and incorporating reactive diluent TPGDA into the sol as new dispersion medium. Optimized samples have maintained stable for over 180 days. The sol dispersions and UV-curable organic compounds were mixed to form the hybrid coatings for fire protection. Effects of the distillation treatment and the cosolvent anhydrous ethanol added into the reaction solution on thermal and combustion performances and physical properties of the hybrid coatings were studied by thermogravimetric analysis, microscale combustion calorimeter, limit oxygen index test and UL-94 horizontal test, etc. The results showed that the distillation treatment for the sol was necessary to improve thermal performance and physical properties of the hybrid coatings. In addition, in the flammability experiment, hybrid coatings showed a quick and efficient protection of the substrate.

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“…The microscopic features of the hybrid coatings obtained with sol-gel process depend on those hydrolysis and condensation reactions that are generally controlled by the pH of the solution [24][25]. In the acid catalyzed reaction, the hydrolysis step is faster than the condensation step, resulting in a more extended and less branched network structure.…”

Section: Introductionmentioning

confidence: 99%

The corrosion resistance of 316L stainless steel coated with a silane hybrid nanocomposite coating

Zand

Verbeken

Adriaens

2011

Progress in Organic Coatings

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The present work aims at evaluating the corrosion resistance of 316L stainless steel pretreated with an organic-inorganic silane hybrid coating. The latter was prepared via a sol-gel process using 3-glycidoxypropyl-trimethoxysilane as a precursor and bisphenol A as a crosslinking agent. The corrosion resistance of the pre-treated substrates was evaluated by neutral salt spray tests, linear sweep voltammetry and electrochemical impedance spectroscopy techniques during immersion in a 3.5 % NaCl solution. In addition, the effect of the drying method as an effective parameter on the microscopic features of the hybrid coatings was studied using Fourier transform infrared spectroscopy and scanning electron microscopy.Results show that the silane hybrid coatings provide a good coverage and an additional corrosion protection of the 316L substrate.

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Synthesis, characterization and thermal properties of novel epoxy containing silicon and phosphorus nanocomposites by sol–gel method

Cited by 154 publications

References 17 publications

Synthesis, characterization and thermal properties of inorganic-organic hybrid

Synthesis, characterization and thermal properties of inorganic-organic hybrid

Preparation and stability of silica sol/TPGDA dispersions and its application in the UV-curable hybrid coatings for fire protection

The corrosion resistance of 316L stainless steel coated with a silane hybrid nanocomposite coating

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