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A kind of high hardness powder coating, preparation method and application thereof

A technology of powder coating and high hardness, which is applied in the field of coatings, and can solve the problems of affecting the performance of appearance parts, scratches on the surface of the coating film, and affecting the appearance of appearance parts, so as to avoid poor performance, good scratch resistance, and hardness performance excellent effect

Active Publication Date: 2020-03-17
NIPPON PAINT TIANJIN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The appearance parts of sports equipment, outdoor building curtain walls, outdoor place guardrails and other outdoor items are exposed to the outdoor environment for a long time, and are easily affected by the outside world and cause scratches, which in turn cause scratches on the surface of the coating film, which not only affects the appearance of the appearance parts, It is easy to cause damage to the coating, which in turn affects the performance of the appearance parts
[0003] The traditional powder coating covers the surface of the appearance parts to form a coating. The coating is made by one-time spraying and one-time film-forming process. The film thickness is 60-120um. The coating has high bonding strength to the substrate, low water absorption, and high temperature resistance. Good, impact resistance, good flexibility, but there is a defect of low hardness
Coatings coated with traditional powder coatings will seriously affect the appearance and service life when they are worn or scratched by external forces during use

Method used

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  • A kind of high hardness powder coating, preparation method and application thereof
  • A kind of high hardness powder coating, preparation method and application thereof
  • A kind of high hardness powder coating, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A high-hardness powder coating, comprising the following components by weight:

[0047]

[0048] like figure 1 as shown, figure 1 It is a schematic flow chart of the preparation method of the high hardness powder coating of the present invention. First, accurately weigh the raw materials according to the formula of the high-hardness powder coating components, and mix them evenly in the premixing tank through high-speed rotation (premixing time is 5-10 minutes), and then put the evenly mixed raw materials into the Twin-screw extruder, melted and extruded at 95-105°C, pressed into tablets by cooling rolls, cooled at natural temperature, coarsely crushed with a pulverizer, and used after cooling Grinding and pulverizing with a pulverizer, sieving with a 180-mesh sieve, and cooling naturally after sieving through a 180-mesh sieve, finally obtaining the high-hardness powder coating with a uniform particle size (25-45 μm).

[0049] like figure 2 as shown, figure 2It...

Embodiment 2

[0056] A high-hardness powder coating, comprising the following components by weight:

[0057]

[0058] First, accurately weigh the raw materials according to the formula of the high-hardness powder coating components, and mix them evenly in the premixing tank through high-speed rotation (premixing time is 5-10 minutes), and then put the evenly mixed raw materials into the Twin-screw extruder, melted and extruded at 95-105°C, pressed into tablets by cooling rolls, cooled at natural temperature, coarsely crushed with a pulverizer, and used after cooling Grinding and pulverizing with a pulverizer, sieving with a 180-mesh sieve, and cooling naturally after sieving through a 180-mesh sieve, finally obtaining the high-hardness powder coating with a uniform particle size (26-70 μm).

[0059] The high-hardness powder coating of the present embodiment is used as the purposes of exterior part, comprises the following steps:

[0060] Degrease the aluminum veneer (or perform other pr...

Embodiment 3

[0063] A high-hardness powder coating, comprising the following components by weight:

[0064]

[0065]

[0066] First, accurately weigh the raw materials according to the formula of the high-hardness powder coating components, and mix them evenly in the premixing tank through high-speed rotation (premixing time is 5-10 minutes), and then put the evenly mixed raw materials into the Twin-screw extruder, melted and extruded at 95-105°C, pressed into tablets by cooling rolls, cooled at natural temperature, coarsely crushed with a pulverizer, and used after cooling Grinding and pulverizing with a pulverizer, sieving with a 180-mesh sieve, and cooling naturally after sieving through a 180-mesh sieve, finally obtaining the high-hardness powder coating with a uniform particle size (26-70 μm).

[0067] The high-hardness powder coating of the present embodiment is used as the purposes of exterior part, comprises the following steps:

[0068] Degrease the aluminum veneer (or perf...

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Abstract

The invention discloses a high-hardness powder coating which comprises the following components in parts by weight: 20-25 parts of polyurethane resin, 5-10 parts of polyester resin, 25-30 parts of an isothiocyanate dipolymer, 5.5-7.5 parts of aids, 1.4-7 parts of pigment and 25-38 parts of a filler. The invention further discloses a preparation method of the high-hardness powder coating. The preparation method comprises the following steps: uniformly mixing 20-25 parts of the polyurethane resin, 5-10 parts of the polyester resin, 25-30 parts of the isothiocyanate dipolymer, 5.5-7.5 parts of the aids, 1.4-7 parts of the pigment and 25-38 parts of the filler, performing melting extrusion, tabletting, cooling, performing rough crushing and fine crushing in sequence, and screening, thereby obtaining the high-hardness powder coating. The high-hardness powder coating disclosed by the invention is excellent in hardness performance for a base material, optimal in adhesion property to the base material, good in binding property and hardness for the base material and very good in scratch resistance effect.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a high-hardness powder coating, a preparation method and an application thereof. Background technique [0002] The appearance parts of sports equipment, outdoor building curtain walls, outdoor place guardrails and other outdoor items are exposed to the outdoor environment for a long time, and are easily affected by the outside world and cause scratches, which in turn cause scratches on the surface of the coating film, which not only affects the appearance of the appearance parts, It is also easy to cause damage to the coating, which in turn affects the performance of the appearance parts. [0003] The traditional powder coating covers the surface of the appearance parts to form a coating. The coating is made by one-time spraying and one-time film-forming process. The film thickness is 60-120um. The coating has high bonding strength to the substrate, low water absorption, and high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D175/04C09D5/03C09D7/61
CPCC08K2003/2227C08K2003/2241C08K2003/3045C08L2205/02C09D5/033C09D175/06C08L75/04C08K13/02C08K3/22C08K3/04C08K3/30
Inventor 张俊王春方张炎蒋志峰孙大东李景红
Owner NIPPON PAINT TIANJIN