Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Scratch resistant coating for glass ceramic cooktops

A technology for coating and coating substrates, applied in the direction of coatings, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as hardness reduction, and achieve the effect of reducing mechanical or chemical erosion, transparency and uniform appearance

Pending Publication Date: 2022-05-06
惠而浦欧洲中东及非洲股份公司 +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this is also accompanied by a severe reduction in hardness, since the silicon oxynitride layer approximates a silicon oxide layer with an increased oxygen content, which no longer differs significantly from typical glass or glass-ceramic substrates in terms of its hardness. the difference

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Scratch resistant coating for glass ceramic cooktops
  • Scratch resistant coating for glass ceramic cooktops
  • Scratch resistant coating for glass ceramic cooktops

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] After dissolving 0.1 mol of metal precursors (aluminum chloride and zirconium chloride) and 0.2 mol of nitrogen carrier (guanidine) in ethanol at room temperature of 26° C. under nitrogen flow for 15 hours, a sol with R=2 was obtained. The sol is transparent and has a shelf life of 10 months. Transparent glass-ceramic substrates (7x3 cm) have been impregnated (at 150mm*min -1 The immersion speed of immersion once) is coated by sol. After immersion, the substrate was heated in an oven at 850°C for 1 hour. The coating is transparent with no rainbow effect. A scratch test by Erichsen hardness pencil tester showed a hardness of 11N.

Embodiment 2

[0135] After dissolving 0.1 mol of metal precursors (aluminum sec-butoxide and zirconium chloride) and 0.5 mol of nitrogen carrier (urea) in isopropanol for 20 min under magnetic stirring at 600 rpm, a sol with R=5 was obtained. The sol is clear and has a shelf life of 2 weeks. The black glass-ceramic substrate (7x3 cm) has been impregnated (at 150mm*min -1 The immersion speed of immersion once) is coated by sol. After immersion, the substrate was heated in an oven at 800 °C for 2 hours. Coating results contain an opaque finish. Scratch test by pencil hardness according to ASTM D 3363 showed a value >9H.

Embodiment 3

[0137] A sol with R=2 was obtained after dissolving 0.1 mol of metal precursors (aluminum chloride and zirconium chloride) and 0.2 mol of nitrogen carrier (urea) in ethanol. The sol is transparent and has a shelf life of six months. Black glass-ceramic substrates (23x27 cm 2 ). The substrate was then heated in an oven at 800°C for 2 hours. Scratch test of opaque finish by Erichsen hardness pencil tester Non-uniform coating results show a hardness of 10N. A cleanability test has been performed by placing 5 grams of tomato paste on the coated glass-ceramic and heating it at 350°C for 15 minutes and then allowing it to cool before the cleaning step. Using a damp soft sponge, apply 100g / cm 2 pressure, to remove cooked food on coated glass-ceramic, showed that 600 strokes (one stroke is considered a back and forth movement) were required to clean at least 95% of the surface.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to scratch-resistant coatings, in particular for cooktops, to substrates or products having the scratch-resistant coatings and to a method for the production thereof. More specifically, the present invention relates to a scratch resistant coating obtained by a sol-gel process and a coated substrate having thereon a hard material layer comprising a metal nitride and / or metal nitrogen oxide composite and to the manufacture thereof.

Description

[0001] manual technical field [0002] The present invention relates to scratch-resistant coatings, in particular scratch-resistant coatings for cooktops, to substrates or products provided with said scratch-resistant coatings and to methods for their preparation. More specifically, the invention relates to scratch-resistant coatings in the form of sols and coated substrates having a layer of hard material comprising metal nitrides thereon and to their manufacture. Background technique [0003] Substrates for cooktops, especially glass-ceramic cooktops, for example when moving pots and pans over their surfaces, especially when not thoroughly cleaned, and during cleaning operations, are constantly exposed to the risk of scratching middle. Additionally, sponges commonly available in the market can be very abrasive and detergents can enhance this action. Of course, scratches lead to an unpleasant appearance, have a negative effect on cleaning and, in severe cases, also on hea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C03C17/00
CPCC03C17/009C03C17/006C03C2217/90C03C2218/113B01J27/24C03C17/225C03C2218/111C03C2218/112C03C2218/119C03C2218/118C03C10/00C03C2217/281C03C2217/29C03C2217/78C04B35/58035C04B35/581C04B35/62222C04B35/624C04B35/6264C04B35/632C04B35/64
Inventor 玛格丽塔·巴索路易吉·德纳尔多艾格尼斯·达戈斯蒂诺
Owner 惠而浦欧洲中东及非洲股份公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com