Jun Meiqi丨Still don't take "boiling resistance" seriously? talk about the "sustainable" protection of aluminum doors and windows
In the past inherent impression, people's understanding of doors and windows is nothing more than sound insulation, heat insulation, heat preservation, waterproof, safety (wind resistance, home protection, etc.), aesthetics (decoration) and other functional carriers, with the powder coating has become an aluminum alloy doors and windows "important coat", "functionality" has gradually become the focus of enterprise research and development, as well as the focus of consumers, that is, people in addition to the appearance of the appearance of the product requirements, but also requires the durability of the door and window products in the appearance of the coating has the ability to resist external damage.
"Water" is a major challenge encountered by aluminum doors and windows for a long time, after a long period of rain, some people's aluminum alloy doors and windows in the home have a chemical reaction, surface discoloration, fading, deformation and other problems, which not only affects the overall appearance, but also accelerates the aging of aluminum profiles for doors and windows. Especially for aluminum doors and windows used in high-end building curtain walls and other places, its coating is easy to be corroded by acid and alkali in a humid atmosphere, and it is difficult to meet the requirements of high decoration and strong weather resistance of building materials. At this time, we need to understand the boiling resistance of powder coatings.
CHAPTER.01
Learn about boiling resistance experiments
The boiling resistance test of powder coating is a method to evaluate the waterproof performance of powder coating, and it is also an important indicator to test its quality, according to relevant experimental data, the normal range of boiling resistance of powder coating is generally about 1-4 hours, less than 1 hour or higher than 4 hours are non-compliant, of course, whether the boiling resistance is normal is also related to the specific application scenario, if it is used in ships, marine structures and other occasions, due to long-term contact with seawater, its boiling time is also different.
The osmosis of water molecules is one of the most common aging factors, which has a serious impact on the corrosion of the substrate and the degradation and failure of the coating, especially in the field of aluminum alloy doors and windows.
As early as before, the field of outdoor building materials that focused on durability had put forward clear requirements for the water resistance of coatings, and the boiling water resistance was clearly proposed in the national standard "Aluminum Alloy Building Profiles Part 4: Powder Spraying Profiles". In addition, the current building materials standards GB, AAMA, Qualicoat, etc. have certain requirements for the boiling resistance of the coating film, and the large aluminum profile factories themselves have clear relevant standards for the weather resistance and boiling performance of the aluminum profile coating film.
CHAPTER.02
Defend reliable hard power
So, what are the types of powder coating products suitable for doors and windows? Junmeiqi super weather-resistant pure polyester powder coating, fluorocarbon powder coating, super weather-resistant metal powder coating, with multiple advantages such as weather resistance, cold and heat resistance, anti-corrosion, stain resistance, etc., provide long-term quality protection for doors and windows while beautifying, and reliable hard power.
Junmeiqi super weather-resistant pure polyester powder coating, with excellent super weather resistance, in line with AAMA 2604, QUALICOAT Class2 and GB52637.4-II standards, excellent corrosion resistance, acid salt spray (through -1000 hours, no more than 2 bubbles, penetration width is not longer than 4mm), neutral salt spray (through - 2000 hours), in addition, it also has excellent adhesion, impact resistance (through - - Impact force 2.5Nm, slight cracking but no falling off), bending resistance (through - bending shaft 5 mm, slight cracking but no falling off) and other properties. It is understood that the traditional polyester powder coating needs to be tested in Florida for 1 year, while the ultra-weather-resistant polyester powder coating needs to be tested in Florida for 3 years.
In addition, Junmeiqi's ultra-weather-resistant PVDF and FEVE fluorocarbon powder coatings have the same quality assurance and can be widely used in high-end building exterior decoration, and their coatings show the characteristics of weather resistance, impact resistance, high and low temperature resistance, acid and alkali resistance, etc., which can ensure that the building still has good structural performance and appearance effect in the complex natural environment.
CHAPTER.03
Deep cultivation is guided by market demand
Under the current environmental protection policy, how to protect aluminum alloy doors and windows, improve the service life of aluminum alloy doors and windows, and maintain aesthetics has become a topic of frequent concern. Junmeiqi focuses on powder coatings for doors and windows, and continues to study the performance improvement of powder coatings in various harsh environments (including: high temperature and humidity, marine environments, extreme weather, etc.), so as to provide consumers and users with better product series.
(Source: Jun Meiqi)