Black corundum composite sand cloth

[0020] Example 1

[0021] Black corundum composite emery cloth, including a base cloth, the upper surface of the base cloth is provided with a primer layer, the upper surface of the primer layer is provided with a frosted layer, the frosted layer is black corundum; wherein the base cloth is kraft paper, and the primer layer It is a urea-formaldehyde resin; the particle size of the black corundum is P40.

[0022] The preparation method of the emery cloth includes the following steps:

[0023] (1) After a surface of the base cloth treated by the conventional method is treated with a blade coating method, it is dried to obtain a treated layer of the base cloth;

[0024] (2) Apply the primer to the surface of the treatment layer of the base cloth by the roller coating method to obtain the primer layer;

[0025] (3) Use the electrostatic sand planting method to implant the frosting into the primer layer to obtain the frosted layer; then curing at 60°C for 9 hours to obtain the abrasive cloth.

[0026] Example 2

[0027] Black corundum composite emery cloth, including a base cloth, the upper surface of the base cloth is provided with a primer layer, the upper surface of the primer layer is provided with a frosted layer, the frosted layer is a mixture of black corundum and brown corundum; wherein the base cloth is latex paper The primer layer is phenolic modified resin; the particle size of black corundum in the mixture of black corundum and brown corundum is P60, and the particle size of brown corundum is P60; the mass ratio of black corundum and brown corundum is 1:0.3.

[0028] The preparation method of the emery cloth includes the following steps:

[0029] (1) After a surface of the base cloth treated by the conventional method is treated with a blade coating method, it is dried to obtain a treated layer of the base cloth;

[0030] (2) Apply the primer to the surface of the treatment layer of the base cloth by the roller coating method to obtain the primer layer;

[0031] (3)

[0032] Example 3

[0033] Black corundum composite emery cloth, including a base cloth, the upper surface of the base cloth is provided with a primer layer, the upper surface of the primer layer is provided with a frosted layer, the frosted layer is black corundum; wherein the base cloth is kraft paper, and the primer layer It is acrylic modified resin; the particle size of the black corundum is P220.

[0034] The preparation method of the emery cloth includes the following steps:

[0035] (1) After a surface of the base cloth treated by the conventional method is treated with a blade coating method, it is dried to obtain a treated layer of the base cloth;

[0036] (2) Apply the primer to the surface of the treatment layer of the base cloth by the roller coating method to obtain the primer layer;

[0037] (3) Use the electrostatic sand planting method to implant the frosted sand into the primer layer to obtain the frosted layer; then cure at 90°C for 6 hours to obtain the abrasive cloth.