Floor Coating Standard (Test Method 2)

6.4 Test Methods

The reagents used are at least chemically pure, and the water used is grade III water that meets the requirements of GB/T 6682-1992. The test solution is pre adjusted to the test temperature before the test.

6.4.1 Status in Container (Class B/C)

Open the container and use a knife or mixer to allow sediment to settle at the bottom of the container. If the mixture is evenly mixed, it will be evaluated as uniform without hard lumps after mixing. Two component coatings should be inspected separately.

6.4.2 Solid content (Class A, Class B)

According to GB/T1728-1979 (1989) regulations. Mix the components of the product (excluding diluents) according to the specified ratio and conduct the test.

6.4.3 Drying time (Class A, Class B, Class C)

According to the provisions of GB/T1728-1979, the surface dryness shall follow method B. Floor coating primer and thin floor coating topcoat shall be dried according to method A, and thick floor coating topcoat shall be dried according to method C.

6.4.4 Probationary Period (Class A/B, Class C)

Place 250ml of the mixed sample into a tin can or glass bottle with a capacity of 350lm and an inner diameter of 70mm~80mm. After reaching the agreed time, inspect the contents of the container. If there is no precipitation after stirring or if the mixture is easy to be evenly divided after stirring, and the viscosity does not significantly increase compared to just mixing, it does not affect the construction performance. The test task is "Can be used: Suitable for use with the compound.

6.4.5 Pencil hardness (Class B) shall be tested in accordance with ISO15184:1998. The pencil is a Zhonghua brand 101 drawing pencil.

6.4.6 Impact resistance (Class B, Class C)

Thin floor coatings and topcoats shall be carried out in accordance with GB/T1732-1933 regulations. Thickness floor coating topcoat; Place the template tightly onto a standard sand (GB/T17671-1999) with a thickness of 20mm, and then freely drop a steel spherical weight with a diameter of (60 ± 4) mm and a mass of (1000 ± 20) g from a height of 300mm. Select three positions on a template with a distance of 50mm each, and observe the surface of the template with the naked eye. There should be no cracks, peeling, or obvious deformation.

6.4.7 Flexibility (Class A, Class B)

According to GB/T1731-1993 regulations.

6.4.8 Adhesion (Class A, Class B)

According to GB/T9286-1998 regulations.

6.4.9 Wear resistance (Class B, Class C)

According to ISO7784-2; It was stipulated in 1997. The model of the rubber grinding wheel used is CS-17

6.4.10 Water resistance (Class B, Class C)

According to the provisions of Law A in GB/T1733-1993. Soak in water for 7 days

6.4.11 Oil resistance (Class B, Class C)

According to the provisions of Law A in GB/T1734-1993. Soak in 120 # gasoline for 7 days

6.4.12 Acid resistance (Class B/C)

According to the provisions of Method A in GB/T 9274-1988, soak for 48 hours in sulfuric acid solutions of specified concentrations (10% and 20%, mass percentage)

6.4.13 Alkali resistance (Class B, Class C)

According to the provisions of Method A in GB/T9274-1998. Soak in sodium hydroxide solution of specified concentration (10% and 20%, mass percentage) for 48 and 72 hours.

6.4.14 Hardness Class (C)

According to GB/T2411-1988 method A, in a 3% (mass percentage) Warner solution, Qingpao was dissolved for 7 days