The wear resistance of the paint film refers to the difficulty of the paint film falling off under the action of a certain friction force. This is an important parameter to evaluate the wear resistance and durability of the coating. According to the national standard GB4893.8 “Furniture surface paint film wear resistance determination method”, the determination method of paint film wear resistance is as follows:

1. Equipment and materials:

The use of a paint film abrasion meter, such as the JM-1 type, can also be used with other equivalent abrasion meters.

Grinding wheel dresser, rubber grinding wheel (JM-120), thickness 10mm, diameter 50mm.

Aspirador de pó, balance (division value 0.001g), etc..

Teste de marcação para filme de tinta e verniz (GB/T 9286)

2. Test steps:

Drill a hole with a diameter of 8.5mm into the sample and take a round plate with a diameter of 100mm as the sample.

The sample is fixed on the abrasion meter, a 1000g weight is added to the pressure arm, and the trimmed rubber grinding wheel is installed. Add a balance weight equal to the weight of the grinding wheel at the end of the arm.

Lower the pressure arm and turn on the power switch, vacuum switch and turntable switch. To start sanding, first sanding 50 turns to make the surface of the paint film evenly wear to form a ring. If it is found that the wear is not uniform, the sample should be replaced in time.

The sample is taken out and accurately weighed after removing the floating debris. The quality difference before and after the sample is the quality lost by the paint film.

Teste de marcação para filme de tinta e verniz (GB/T 9286)

According to the requirements of the agreement, adjust the counter to the specified number of grinding (minus the previous 50 vezes) e continue a lixar. No final do teste, a condição de desgaste da superfície do filme de tinta foi observada.

Execute testes paralelos, testando pelo menos três amostras. Você pode optar por realizar diferentes números de voltas no teste de retificação, como 400, 1000, 2000, 3000, 4000, 5000 voltas, o número específico de voltas de acordo com as necessidades reais da negociação.

Testando a resistência ao desgaste da película de tinta, o desempenho e a durabilidade do revestimento podem ser avaliados quando sujeito ao desgaste. Isso ajuda a determinar a vida útil e as propriedades do revestimento, fornecer informações sobre a qualidade do revestimento para utilização do produto.