Engineering Case Studies
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Water-based polyurethane construction technology
Substrate Treatment
Substrate treatment refers to the cleaning of floor oil stains, moisture, dust, and other contaminants, including removing floor oil stains and dust, drying the floor, repairing floor cracks and pits, to create a clean and smooth substrate for floor coating application. Substrate treatment is the first step in floor coating projects and is also a fundamental step.
Grinding, cleaning, and sanitizing concrete floors; cracks should be cut open with a specialized cutting machine and filled with epoxy mixed with sand; if the original floor is an epoxy floor, it needs to be ground.
1. Significance of Substrate Treatment
● Improve Coating Adhesion
Proper substrate treatment can create a uniformly rough surface, allowing the epoxy floor primer to fully penetrate, forming a bonding force between the epoxy floor coating and the substrate, thus improving coating adhesion.
● Ensure Floor Smoothness and Aesthetics
Only by applying floor paint on a smooth and clean substrate can a flat and aesthetically pleasing epoxy floor be formed.
2. Objects of Substrate Treatment
● New Floors
Newly poured concrete floors have less dust and oil pollution, but special attention should be paid to the treatment of efflorescence on the surface.
● Stone Floors
Stone floors include terrazzo floors, tile floors, etc. For stone floors, attention should be paid to grinding and wax removal.
● Old Floors
The focus of substrate treatment for old floors is on cleaning the surface and leveling the damaged areas.
3. Methods of Substrate Treatment
● Manual Cleaning with Power Tools
Manual handling tools include angle grinders, steel brushes, etc.
● Shot Blasting Treatment
Shot blasting treatment, also known as abrasive blasting treatment, uses a shot blasting machine to propel abrasives at high speed to strike the surface, achieving the purpose of grinding the surface and cleaning impurities.
● High-Pressure Water Surface Treatment
High-pressure water surface treatment includes pure water jet and high-pressure water abrasive jet treatment. The principle of high-pressure water surface treatment is similar to that of shot blasting treatment, but it is more environmentally friendly and efficient than shot blasting.
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