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Sol-gel coating comprising a fluorinated filler and culinary article equipped with such a coating

A sol, coating technology, applied in metal material coating process, coating, kitchen utensils and other directions, can solve problems such as difficulty in wetting PTFE powder

Active Publication Date: 2014-02-05
SEB SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wetting this PTFE powder is extremely difficult, making it almost impossible to incorporate it into sol-gel compositions

Method used

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  • Sol-gel coating comprising a fluorinated filler and culinary article equipped with such a coating
  • Sol-gel coating comprising a fluorinated filler and culinary article equipped with such a coating
  • Sol-gel coating comprising a fluorinated filler and culinary article equipped with such a coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Example 1: Sol-gel coating with fluorinated fillers

[0094] The sol-gel composition 2, the different components and their respective amounts are shown in Table 1 below, was sprayed onto the outside of the previously degreased and sandblasted multilayer support. An uncured 2 sol-gel coating was obtained.

[0095] Table 1: Chemical composition of sol-gel composition 2

[0096] components

Mass percentage (%)

"Filtered" sol-gel compositions

30-50%

isopropyl alcohol (thinner)

30-50%

Butylene glycol (wetting agent)

0-10%

Pigment filler

0-10%

Fluorinated filler

≤10%

[0097] A "filtered" sol-gel composition is obtained as follows:

[0098] o starting from a metal alkoxide type precursor based initial sol-gel composition as defined above (preferably MTES and TEOS);

[0099] o This metal alkoxide is then hydrolyzed in a reactor in the presence of water and an acid or base catalyst (preferably an a...

Embodiment 3

[0114] Example 3: Scratch Resistance and Hydrophobicity / Wettability Test Results

[0115] The coated carrier of embodiment 1 and 2 (respectively in figure 2 and 3 indicated) were subjected to the hydrophobicity and scratch resistance tests indicated earlier in this application.

[0116] Based on the results obtained from these various tests with image 3 and 4 show.

[0117] These figures show that the presence of fluorinated fillers in the sol-gel coating can significantly improve the physicochemical properties of the sol-gel coating in terms of hydrophobicity and scratch resistance.

[0118] In particular, the results obtained from the hydrophobicity tests show a change in the behavior of the sol-gel coating, which is due to the presence of fluorinated fillers according to the invention. In fact, when no fluorinated fillers were present, the measured contact angle was 48.6°, while increasing the presence of CERAFLOUR in the coating resulted in a marked increase in th...

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Abstract

The present invention relates to a sol-gel coating (2) taking the form of a continuous film of a material comprising a matrix formed using at least one metal polyalcoxylate. According to the invention, the sol-gel coating (2) comprises at least one fluorinated filler taking the form of particles of fluorocarbon resin coated with a polyethylene wax or a fluorinated polyether. The present invention also relates to a culinary article equipped with such a coating and a process for applying at least one coating to a face of a support.

Description

technical field [0001] The present invention generally relates to a sol-gel coating containing a fluorinated filler and a kitchen article having such a coating. The invention also relates to methods of applying such coatings to supports. Background technique [0002] In the meaning of the present invention, by sol-gel coating is meant a coating synthesized by the sol-gel method from a liquid-phase precursor-based solution, which is converted at low temperature by a set of chemical reactions (hydrolysis and condensation) into solid. The coatings thus obtained can be organic-inorganic or completely inorganic. [0003] By organic-inorganic coating within the meaning of the present invention is meant a coating whose network is substantially inorganic, but which contains organic groups, due in particular to the nature of the precursors used and the curing temperature of the coating. [0004] By completely inorganic coating within the meaning of the present invention is meant a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12A47J36/02C09D4/00B05D5/08C09D183/04C09D7/65C09D7/80
CPCC09D4/00C23C18/127C09D7/125C09D183/04C23C18/1254C23C18/122B05D5/083B05D5/08A47J36/025C09D7/65A47J36/02
Inventor 奥里莱恩·贝鲁加埃莱·巴尔西科夫斯基
Owner SEB SA
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