The role of BYK-CATALYST 450

2021-11-10   Pageview:353

This additive promotes the cross-linking of amino resins with hydroxyl-containing resins, especially HMMM-type low-reactive melamine-formaldehyde resins that require an accelerator to lower the curing temperature or reduce the baking time.

BYK-CATALYST 450 can be baked at temperatures 10-20°C (15-35°F) lower than other closed p-toluenesulfonic acids (e.g., they are combined with morpholine or aminomethyl propanol).

 

 

 

 

 

 

 

 

 

 

 

The hollow particles are microspheres with a wall thickness much smaller than their diameter, and are easily broken by friction or other effects. The material can be glass, ceramic, plastic, metal, etc.
Of course, the non-slip surface formed by this method has micro-cavities and micro-pits, which can easily contain dust and dirt, so the surface is easily contaminated.

Test method for anti-slip effect
The anti-slip effect of the coating film can be understood as the resistance of the object moving on the surface of the coating film. The size of the resistance indicates the friction between the object and the coating film, and also the degree of unevenness of the coating film surface.
The measuring principle, measuring method, and instrument used for the anti-slip effect of the coating film are the same as those described in the anti-slip effect of the coating film. The greater the friction generated, the better the anti-skid effect.

Application effect of anti-slip agent
The use effect of inorganic anti-skid agent
Inorganic anti-skid agents are commonly used in coatings and are inexpensive.
High-altitude iron buildings such as high-voltage transmission towers and microwave towers require frequent maintenance and inspection.

In addition to anti-rust, weather resistance and other properties of coatings, slip resistance is another important indicator. Generally, the friction coefficient is required to be above 0.78 to ensure a certain degree of safety in high-altitude operations.

The anti-rust coating of high-voltage power transmission tower uses mica-like iron oxide anti-slip agent formula and comparison sample formula. Coefficient of friction p of the coating film of each formulation.
After adding the anti-slip agent, the anti-slip property of the iron tower anti-rust coating is greatly improved and meets the requirements of use.

Another example is the manufacture of non-slip floor tiles. The surface of the ceramic tile is coated with a liquid resin (such as epoxy resin) with strong adhesion to form a resin layer, and then silicon carbide (SiC) or crystal oxidation used as an anti-slip agent Coarse particles of hard substances such as aluminum are dispersed on the resin layer and are wetted by the resin.

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