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

Method for testing bright spots and rain marks of exterior wall flat-coating finish paint

A test method and exterior wall technology, applied in the preparation of test samples, optical test flaws/defects, measurement devices, etc., can solve the problems of serious rain marks on bright spots, loss of company profits, etc., to reduce profit losses and reduce customers. The risk of complaints, the effect of improving the overall assessment

Pending Publication Date: 2021-01-29
YANGZHOU POLYTECHNIC INST
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the product has passed the test and conforms to the national standard or industry standard, if the initial bright spots and rain marks are too serious, it will still cause complaints from customers and cause loss of profits to the company

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
  • Method for testing bright spots and rain marks of exterior wall flat-coating finish paint
  • Method for testing bright spots and rain marks of exterior wall flat-coating finish paint
  • Method for testing bright spots and rain marks of exterior wall flat-coating finish paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A test method for bright spots of rain marks on flat paint on exterior walls, comprising the following steps:

[0025] Step 1: Scrape a piece of fine grain on the asbestos-free cement board (430x150x4~6mm), put it in a 50°C oven and bake it for 5 hours, then take it out, then place it under constant temperature and humidity conditions for 0.5h, and then polish it with 240-grit sandpaper smooth. After grinding, continue to scrape a fine layer of putty, and the total thickness of the two layers of putty is 1mm. Then put it in a 50°C oven and bake for 8 hours, take it out, and then place it under constant temperature and humidity conditions for 0.5 hours, and then polish it with 320-grit sandpaper. The constant temperature and humidity conditions are a temperature of 21° C. and a humidity of 45%.

[0026] Step 2: On the putty layer, evenly roll coat an outer wall anti-alkali sealing primer, and the coating rate of the primer is 0.11KG / m 2 . The roller coating construct...

Embodiment 2

[0044] A test method for bright spots of rain marks on flat paint on exterior walls, comprising the following steps:

[0045] Step 1: Scrape a fine grain on the asbestos-free cement board (430x150x4~6mm), put it in a 55°C oven and bake it for 6 hours, take it out, then place it under constant temperature and humidity conditions for 0.8h, and then polish it with 240-grit sandpaper smooth. After grinding, continue to scrape a fine layer of putty, and the total thickness of the two putty layers is 1.5mm. Then put it into a 55°C oven and bake for 9 hours, take it out, and then place it under constant temperature and humidity conditions for 0.8 hours, and then smooth it with 320-grit sandpaper. The constant temperature and humidity conditions are a temperature of 23° C. and a humidity of 50%.

[0046] Step 2: On the putty layer, evenly roll coat an outer wall anti-alkali sealing primer, and the coating rate of the primer is 0.12KG / m 2 . The roller coating construction tool is a...

Embodiment 3

[0064] A test method for bright spots of rain marks on flat paint on exterior walls, comprising the following steps:

[0065] Step 1: Scrape a piece of fine grain on the asbestos-free cement board (430x150x4~6mm), put it in a 60°C oven and bake it for 7 hours, then take it out, then place it under constant temperature and humidity conditions for 1 hour, and then smooth it with 240-grit sandpaper . After grinding, continue to batch scrape a delicate layer, and the total thickness of the two layers of putty is 2mm. Then put it in a 60°C oven to bake for 10 hours, take it out, place it under constant temperature and humidity conditions for 1 hour, and then smooth it with 320-grit sandpaper. The constant temperature and humidity conditions are a temperature of 25° C. and a humidity of 55%.

[0066] Step 2: On the putty layer, evenly roll coat an outer wall anti-alkali sealing primer, and the coating rate of the primer is 0.13KG / m 2 . The roller coating construction tool is a 4...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for testing bright spots and rain marks of exterior wall flat-coating finish paint. The method comprises the following steps: scraping fine particles on an asbestos-free cement board, baking, and polishing to be smooth; coating a putty layer with an alkali-resistant seal primer in a rolling manner, and baking; rolling and coating a primer layer with a finish paintto be tested, and baking to obtain a to-be-tested plate; taking the to-be-tested plate, measuring 15-20ml of tap water by using a pipette, and enabling the tap water to naturally fall onto the test plate; standing for 4-6h under the conditions of constant temperature and constant humidity, and preliminarily and visually judging the grade of bright spots and rain marks; and taking the to-be-testedplate, washing the to-be-tested plate with tap water, placing the to-be-tested plate for 8-10h under the conditions of constant temperature and constant humidity after washing is completed, visually judging the color change grade, and then performing data testing with a colorimeter and a gloss meter. According to the method, the bright spot and rain mark performance of the exterior wall flat-coating finish product can be simply and quickly obtained, the optimal design of a product formula is facilitated, and customer complaints are reduced.

Description

technical field [0001] The invention relates to a test method for bright spots and rain marks of flat paint on exterior walls, and belongs to the technical field of latex paint quality detection. Background technique [0002] At present, most of the exterior wall paints are made of latex paint, and the film formation is not complete at the initial stage of wall paint construction. If condensation or rain occurs, the emulsifier, dispersant, etc. Water-based organic matter is easy to migrate to the surface of the paint film with moisture, forming raindrops or rain lines on the wall. When the water is completely volatilized, it will be enriched and precipitated to form bright spots on the paint film, which is equivalent to uneven varnishing, resulting in defects in the appearance of the paint film. This defect is the bright spot rain mark, also known as "wall cancer" by the paint industry. [0003] Although bright spot rain marks are inevitable for latex paint, neither the na...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N21/95G01N1/28G01N1/44E04F13/02E04F13/04
CPCE04F13/02E04F13/04G01N1/286G01N1/44G01N21/8803G01N21/95
Inventor 周龙生肖伽励
Owner YANGZHOU POLYTECHNIC INST
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