Dongguan Waterproofing and Leak Repair discusses the composition of building waterproof coatings:
Dongguan waterproofing and leak repair coatings refer to a type of liquid, high polymer synthetic material that is in a non-fixed, thick consistency at room temperature. After application, it can form a tough waterproof film on the base surface through the evaporation of solvents, the evaporation of water, or chemical curing. The composition of Dongguan waterproofing and leak repair materials can be divided into three types: primary film-forming substances, secondary film-forming substances, and auxiliary film-forming substances.
Primary Film-Forming Material
The primary film-forming substances in coatings, which include oils and resins, are the main factors determining the nature of the film. They can form films independently or bond with pigments and other materials to create films. Therefore, these substances are also known as binders or binders. The primary film-forming substances are not only essential basic components of paints but also their chemical properties determine the main performance and application methods of the paints, serving as the foundation for the entire paint composition.
(2) Minor Film-Forming Material
The primary film-forming substance is pigment, which imparts color and opacity to the coating. It enhances the hardness of the coating, slows down UV degradation, and improves the durability of paints in the paint manufacturing industry. Pigments are categorized into three main types: coloring pigments, anti-rust pigments, and body pigments (fillers).
(3) Film-Forming Adjuvants
Auxiliary film-forming materials include various solvents, water, and additives, which cannot form films independently. They merely assist in the film-forming process of coatings or the properties of the film. Additives, categorized by their functions, encompass dispersants, wetting agents, thickeners, defoamers, and fungicides, among others. Although the amount of additives used in coatings is small, they significantly affect the storage stability, application performance, and physical properties of the formed coating.
Solvents, also known as volatile components, make up a significant proportion in coatings and completely evaporate after the coating forms a film. Solvents not only help lower the viscosity of the coating to meet application requirements but are also crucial for the formation and quality of the film. Proper use of solvents can enhance the physical properties of the coating, such as luster and density.