What are the indicators of wear-resistant and anti-static floor paint

Generally speaking, a surface resistance value of 1.0 × 1010 or less on the coating can eliminate static charges accumulated on the coating surface. According to the American Society for Testing and Materials standard (ASTMF150-98), a floor with a resistance value between 2.5 × 104 Ω and 1.0 × 06 Ω is called a conductive floor; A floor with a resistance value of l × 106 Ω -1.0 × 09 Ω is called an electrostatic dissipation floor, which can prevent the accumulation of static charges.

In the anti-static floor coating system, it is generally designed as a five layer structure consisting of a permeable conductive primer layer, a grounded copper foil network, a conductive intermediate coating leveling layer, a conductive batch soil layer, and an anti-static surface layer. The coating that penetrates the conductive primer layer should use a conductive primer with strong permeability, and should not blindly pursue sealing to avoid coating peeling; The grounding copper foil network should use a flat bottomed plastic scraper to compact the self-adhesive copper foil to prevent the occurrence of hollowing;

During the construction of the conductive leveling layer, attention must be paid to the smoothness and flatness of the final surface; During the construction of conductive soil layers, it is important to be careful not to miss the coating, which may affect the system resistance of the surface layer; Therefore, during construction, it is advisable to scrape two layers. Currently, most anti-static floor coatings are of the static dissipation type, which can easily dissipate static charges. For anti-static epoxy flooring, once the energy of the electrostatic field reaches a certain level, the breakdown of the dielectric and discharge can cause damage to certain precision electronic components. Therefore, after the anti-static epoxy flooring is completed, the first thing to consider is the anti-static index of the coating. The main indicators include:

A、 The surface resistance (with a resistance value ranging from 1.0 × 106 Ω to 1.0 × 109 Ω) is the ratio of the direct current voltage applied between the standard electrodes on the material surface to the current between the electrodes after a given energization time, and the possible polarization phenomenon on the electrodes is ignored.

B、 The system resistance (with a resistance value between 5.0 × 104 Ω and 1.0 × 109 Ω) is the total resistance between the test surface of the tested object and the grounding point of the tested object.

C、 System grounding resistance (resistance ≤ 10 Ω) one. The resistance encountered when current flows from the grounding system into the earth and then through the earth to another grounding body or spreads to a distant place includes the resistance between the grounding wire and the grounding body itself, the contact resistance between the grounding body and the earth, and the resistance between the two grounding bodies or the resistance from the grounding body to the earth at an infinite distance.

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