A kind of preparation method of magnetic pallet mat

Abstract

The invention discloses a preparation method of a magnetic tray pad, which belongs to the technical field of coated abrasive tools. It is characterized in that: the tray pad itself has a magnetism of 630~790 gauss, and the corresponding coated abrasive has a corresponding magnetic substance that can be adsorbed. This magnetic tray can make sandpaper or emery cloth directly adsorb on the original tray. It is used on the surface without sandpaper or emery cloth, and then adhered to the tray after being backed or glued. After coating the adhesive layer composed of the present invention, the pallet mat is magnetic. This kind of magnetism can directly absorb the corresponding coated abrasives, without the need for back fleece or adhesive.

Description

technical field

[0001] The invention discloses a preparation method of a magnetic tray pad, which belongs to the technical field of coated abrasive tools. Background technique

[0002] There are generally two ways to combine the tray of the traditional grinding tool with the coated abrasive. One is the tray with a fixed belt, and the other is an ordinary tray with a leather surface. This requires the corresponding coated abrasive to be The use of backing or backing is easy to cause the loss of sandpaper or emery cloth in the secondary processing, resulting in waste of resources and high cost.

[0003] In an existing coated abrasive tool, iron powder is added to its adhesive layer, in order to utilize the magnetic properties designed by the grinding tool to absorb the coated abrasive tool with iron powder, so as to achieve the tray and coating of the grinding tool. The purpose of combining abrasive tools. But how to design a magnetic tray for grinding tools has been perplex...

Examples

Embodiment 1

[0023] 1) Glue coating of magnetic tray mat: choose the gray cloth with cashmere, and use an elastic metal scraper to coat the surface of the gray cloth without cashmere with magnetic colloid to form a glue layer. The thickness of the glue layer is 0.6mm; the magnetic colloid is magnetic powder , binder and additives are mixed and stirred at a mass ratio of 1:0.25:0.06 for 35 minutes and then stored at a constant temperature of 35°C; the magnetic powder used is NdFeB magnetic powder and SmCo 5 The mass ratio of magnetic powder is 24:1; the mass ratio of polyvinyl chloride glue and polyurethane adhesive in the binder is 1:6, and the mass ratio of isocyanate and sulfur in the auxiliary agent is 1:1.4;

[0024] 2) After coating the substrate, heat it up to 110°C at a certain heating rate within 15 hours for drying. After drying, cut the obtained magnetic tray mat into 5-inch discs, 6-inch discs or rectangles as required Put it in the packaged sandpaper box for later use.

Embodiment 2

[0026] 1) Glue coating of magnetic tray mat: choose the gray cloth with cashmere, and use an elastic metal scraper to coat the surface of the gray cloth without cashmere with magnetic colloid to form a glue layer. The thickness of the glue layer is 0.7mm; the magnetic colloid is magnetic powder , binder and additives are mixed and stirred at a mass ratio of 1:0.23:0.06 for 37 minutes and then stored at a constant temperature of 35.5°C; the magnetic powder used is NdFeB magnetic powder and SmCo 5 The mass ratio of magnetic powder is 25:1; the mass ratio of polyvinyl chloride glue and polyurethane adhesive in the binder is 1:5.5, and the mass ratio of isocyanate and sulfur in the auxiliary agent is 1:1.4;

[0027] 2) After coating the substrate, heat it up to 105°C at a certain heating rate within 15 hours for drying. After drying, cut the obtained magnetic tray mat into 5-inch discs, 6-inch discs or rectangles as required Put it in the packaged sandpaper box for later use.

Embodiment 3

[0029] 1) Glue coating of magnetic tray mat: choose gray cloth with glue, use elastic metal scraper to apply magnetic colloid on the surface of gray cloth without glue to form a glue layer, the thickness of the glue layer is 0.8mm; the magnetic colloid is magnetic powder , binder and additives are mixed and stirred at a mass ratio of 1:0.27:0.055 for 37 minutes and then stored at a constant temperature of 35°C; the magnetic powder used is NdFeB magnetic powder and SmCo 5 The mass ratio of magnetic powder is 25:1; the mass ratio of polyvinyl chloride glue and polyurethane adhesive in the binder is 1:6, and the mass ratio of isocyanate and sulfur in the auxiliary agent is 1:1.4;

[0030] 2) After coating the substrate, heat it up to 115°C at a certain heating rate within 15 hours for drying. After drying, cut the obtained magnetic tray mat into 5-inch discs, 6-inch discs or rectangles as required Put it in the packaged sandpaper box for later use.

technical field

[0001] The invention discloses a preparation method of a magnetic tray pad, which belongs to the technical field of coated abrasive tools. Background technique

[0002] There are generally two ways to combine the tray of the traditional grinding tool with the coated abrasive. One is the tray with a fixed belt, and the other is an ordinary tray with a leather surface. This requires the corresponding coated abrasive to be The use of backing or backing is easy to cause the loss of sandpaper or emery cloth in the secondary processing, resulting in waste of resources and high cost.

[0003] In an existing coated abrasive tool, iron powder is added to its adhesive layer, in order to utilize the magnetic properties designed by the grinding tool to absorb the coated abrasive tool with iron powder, so as to achieve the tray and coating of the grinding tool. The purpose of combining abrasive tools. But how to design a magnetic tray for grinding tools has been perplex...

Examples

Embodiment 1

[0023] 1) Glue coating of magnetic tray mat: choose the gray cloth with cashmere, and use an elastic metal scraper to coat the surface of the gray cloth without cashmere with magnetic colloid to form a glue layer. The thickness of the glue layer is 0.6mm; the magnetic colloid is magnetic powder , binder and additives are mixed and stirred at a mass ratio of 1:0.25:0.06 for 35 minutes and then stored at a constant temperature of 35°C; the magnetic powder used is NdFeB magnetic powder and SmCo 5 The mass ratio of magnetic powder is 24:1; the mass ratio of polyvinyl chloride glue and polyurethane adhesive in the binder is 1:6, and the mass ratio of isocyanate and sulfur in the auxiliary agent is 1:1.4;

[0024] 2) After coating the substrate, heat it up to 110°C at a certain heating rate within 15 hours for drying. After drying, cut the obtained magnetic tray mat into 5-inch discs, 6-inch discs or rectangles as required Put it in the packaged sandpaper box for later use.

Embodiment 2

[0026] 1) Glue coating of magnetic tray mat: choose the gray cloth with cashmere, and use an elastic metal scraper to coat the surface of the gray cloth without cashmere with magnetic colloid to form a glue layer. The thickness of the glue layer is 0.7mm; the magnetic colloid is magnetic powder , binder and additives are mixed and stirred at a mass ratio of 1:0.23:0.06 for 37 minutes and then stored at a constant temperature of 35.5°C; the magnetic powder used is NdFeB magnetic powder and SmCo 5 The mass ratio of magnetic powder is 25:1; the mass ratio of polyvinyl chloride glue and polyurethane adhesive in the binder is 1:5.5, and the mass ratio of isocyanate and sulfur in the auxiliary agent is 1:1.4;

[0027] 2) After coating the substrate, heat it up to 105°C at a certain heating rate within 15 hours for drying. After drying, cut the obtained magnetic tray mat into 5-inch discs, 6-inch discs or rectangles as required Put it in the packaged sandpaper box for later use.

Embodiment 3

[0029] 1) Glue coating of magnetic tray mat: choose gray cloth with glue, use elastic metal scraper to apply magnetic colloid on the surface of gray cloth without glue to form a glue layer, the thickness of the glue layer is 0.8mm; the magnetic colloid is magnetic powder , binder and additives are mixed and stirred at a mass ratio of 1:0.27:0.055 for 37 minutes and then stored at a constant temperature of 35°C; the magnetic powder used is NdFeB magnetic powder and SmCo 5 The mass ratio of magnetic powder is 25:1; the mass ratio of polyvinyl chloride glue and polyurethane adhesive in the binder is 1:6, and the mass ratio of isocyanate and sulfur in the auxiliary agent is 1:1.4;

[0030] 2) After coating the substrate, heat it up to 115°C at a certain heating rate within 15 hours for drying. After drying, cut the obtained magnetic tray mat into 5-inch discs, 6-inch discs or rectangles as required Put it in the packaged sandpaper box for later use.