Chemical composition: Amine salt solution of p-toluenesulfonic acid
Solvent: Propylene glycol methyl ether/propylene glycol/water 64/5/3
Additive dosage: 1.5-6 % of resin solids
Typical physical and chemical data: Amine value: 10 mg KOH/g
Non-volatile content: 27 %
Acid content: 20%
With the development of science and technology, various special-purpose transparent shields, such as advanced and military protective helmet eyepieces and special eyepieces, aircraft cockpit viewing windows and cover transparent covers, etc., glasses lenses and optical lenses, car glass, high-rise Glass windows for construction and transparent products that work in harsh environments and special places require light weight, ultra-thin, durable, and non-breakable. They have been used and can also obtain good wear resistance.
Another example is that with the continuous improvement of people’s housing conditions, the requirements for floor coating are getting higher and higher during house decoration. The commonly used composite flooring [usually using aluminum oxide (Al2O:) as a wear-resistant agent] can obtain better wear resistance, but the service life is about 10 years. For the coating of high-quality solid wood flooring panels, in addition to the long-term maintenance of transparency and beauty, the more important indicator is the durability and high wear resistance performance, which can be compared with the normal service life of solid wood flooring for 20 to 30 years or longer. match. Nano-grade anti-wear agents are expected to achieve this goal. To obtain excellent abrasion resistance of the coating film, it is related to the type of resin, the variety and amount of pigments and fillers used. This article mainly describes the wear resistance of the coating film added by the addition of anti-wear agents, and also introduces the potential and development of the emerging nano-scale inorganic materials as anti-wear agents in coatings.
Application mechanism and main types of anti-wear agent 1. Application mechanism of anti-wear agent
The wear resistance of the coating film refers to the ability of the coating film to resist friction, abrasion, and erosion. It is related to many properties of the coating film, including hardness, scratch resistance, cohesion, tensile strength, elastic modulus, and properties. . It is generally believed that the effect of coating film properties on its wear resistance is greater than the impact of coating film hardness on its wear resistance.
After adding the anti-wear agent to the coating and coating and curing, hs code for micronized wax the anti-wear agent can be evenly distributed on the surface of the coating film and the entire coating. When the coating film is subjected to friction behavior, the anti-wear agent is like “aggregate” and “reinforcing material”. Similarly, it “shares” the friction that the coating film bears, “helps” the coating film resist external erosion, enhances abrasion resistance, thereby prolonging the service life of the coating film and imparting wear resistance to the coating film. Even if the surface of the coating film is worn during use, the new exposed surface still has a uniform distribution of wear-resistant agent, and the coating film still has abrasion resistance.
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