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A kind of water-resistant sandpaper and preparation method thereof

A sandpaper and sand planting technology, applied in the field of sandpaper, can solve the problems of low grinding efficiency, insufficient water resistance, and high brittleness of coarse-grained sandpaper, achieving good cutting ability, reducing employee health and environmental hazards, and good flexibility. Effect

Active Publication Date: 2020-12-18
DONGGUAN GOLDEN SUN ABRASIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional water-resistant sandpaper is limited by the raw materials it uses - paper base and abrasives, resulting in insufficient water resistance, low grinding efficiency, and high brittleness of coarse-grained sandpaper.

Method used

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  • A kind of water-resistant sandpaper and preparation method thereof
  • A kind of water-resistant sandpaper and preparation method thereof
  • A kind of water-resistant sandpaper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A kind of water-resistant sandpaper, comprising a base material and several abrasive materials 4 evenly planting sand on the base material, the base material includes a paper base layer 1, a primer layer 2 and a glue layer 3 arranged sequentially from bottom to top, the The lower part of the abrasive material 4 runs through the sizing layer 3 , the bottom end of the lower part of the abrasive material 4 is embedded in the primer layer 2 , and the upper part of the abrasive material 4 protrudes from the upper surface of the sizing layer 3 . That is, the lower part of the abrasive material 4 is embedded in the oversize layer 3 and the primer layer 2 , and the upper part of the abrasive material 4 protrudes from the oversize layer 3 and the undercoat layer 2 .

[0057] The abrasive material 4 is silicon carbide, the vertical section of the abrasive material 4 is an equiangular triangle, and the tip part of the upper part of the abrasive material 4 protrudes from the upper s...

Embodiment 2

[0080] The difference between this embodiment and above-mentioned embodiment 1 is:

[0081] Described compound glue layer 3 is made after being coated with compound glue, and described compound glue comprises the raw material of following weight portion:

[0082]

[0083] The coupling agent is 3-(2,3-glycidoxy)propyltrimethoxysilane; the wetting agent is polyoxyethylene fatty alcohol ether.

[0084] The defoamer is polyoxyethylene polyoxypropylene pentaerythritol ether; the solvent A is a mixture of absolute alcohol and water in a weight ratio of 1:1.8.

[0085] Described primer layer 2 is made after being coated with primer, and described primer comprises the raw material of following weight portion:

[0086] Epoxy resin E-51 52 parts

[0087] Polyamide resin 650 98 parts

[0088] 6 parts of solvent B.

[0089] The molecular weight of the polyamide resin 650 is 700, and the solvent B is a mixture of xylene, n-butanol and acetone in a weight ratio of 1:1:1.

[0090] The ...

Embodiment 3

[0102] The difference between this embodiment and above-mentioned embodiment 1 is:

[0103] Described compound glue layer 3 is made after being coated with compound glue, and described compound glue comprises the raw material of following weight portion:

[0104]

[0105] The coupling agent is 3-(2,3-glycidoxy)propyltrimethoxysilane; the wetting agent is Span-20.

[0106] The defoamer is a W090 type defoamer; the solvent A is a mixture of absolute alcohol and water in a weight ratio of 1:2.

[0107] Described primer layer 2 is made after being coated with primer, and described primer comprises the raw material of following weight portion:

[0108] Epoxy resin E-51 55 parts

[0109] Polyamide resin 650 100 parts

[0110] 8 parts of solvent B.

[0111] The molecular weight of the polyamide resin 650 is 800, and the solvent B is a mixture of xylene, n-butanol and acetone in a weight ratio of 1:1:1.

[0112] The silicon carbide is a modified silicon carbide that has been m...

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Abstract

The invention relates to the technical field of abrasive paper, in particular to water-resistant abrasive paper and a preparation method thereof. The water-resistant abrasive paper comprises a base material and a plurality of abrasive materials which are uniformly dispensed with abrasive grains in the base material, wherein the base material comprises a paper base layer, a bottom glue layer and acompound glue layer which are sequentially arranged from bottom to top; the lower parts of the abrasive materials penetrate through the compound glue layer; the bottom ends of the lower parts of the abrasive materials are embedded into the bottom glue layer; and the upper parts of the abrasive materials extend out of the upper surface of the compound glue layer. The water-resistant abrasive paperis good in water resistance, is good in cutting ability, is high in strength, and is good in flexibility; the sharp-end parts of the abrasive materials are exposed out of the surface of the base material, so that self-sharpening performance of the abrasive materials is highlight, and sharpness and grinding efficiency of the abrasive paper can be improved; after being attached and being dispensed with abrasive grains, the bottom glue is pre-dried and the abrasive particles are primarily fixed, and coated with the compound glue to form a stable glue film, so that bonding strength between the abrasive particles and between the abrasive particles and the base material is further improved, and therefore, stability is high.

Description

technical field [0001] The invention relates to the technical field of sandpaper, in particular to a water-resistant sandpaper and a preparation method thereof. Background technique [0002] Water-resistant sandpaper, also known as water-grinding sandpaper or water sandpaper, is named after it can be soaked in water or polished in water when used. The traditional water-resistant sandpaper is C-type kraft paper treated as the base material, and epoxy resin is generally used as the binder. A coated abrasive made by firmly adhering abrasives to a substrate. The traditional water-resistant sandpaper is limited by the raw materials it uses—paper base and abrasives, resulting in insufficient water resistance, low grinding efficiency, and relatively high brittleness of coarse-grained sandpaper. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a water-resistant sandpaper, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D11/00B24D11/02C09J161/06C09J11/04C09J177/00C09J175/04C09J163/00
CPCB24D11/001B24D11/02C08K2003/265C09J11/04C09J161/06C09J177/00C08L75/04C08K13/02C08K3/26C08L63/00
Inventor 孙红斌方红杨伟卞振伟农忠超
Owner DONGGUAN GOLDEN SUN ABRASIVES
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