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Toughened, modified, low-temperature-cued and low-glossiness powder coating, preparation method and application

A low-gloss, toughening modification technology, used in low-temperature curing, impact-resistant powder coatings, high-toughness, preparation, low-gloss fields, can solve problems such as poor impact performance, and improve bending resistance and impact resistance. Effect

Inactive Publication Date: 2017-05-31
NIPPON PAINT TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of poor impact properties of epoxy-polyester type low-temperature curing low-gloss products in the prior art, the first purpose of the present invention is to provide a toughened modified low-temperature curing low-gloss powder coating, so that the coating and base The adhesion of the material is the best, and the toughness of the coating is greatly improved

Method used

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  • Toughened, modified, low-temperature-cued and low-glossiness powder coating, preparation method and application
  • Toughened, modified, low-temperature-cued and low-glossiness powder coating, preparation method and application
  • Toughened, modified, low-temperature-cued and low-glossiness powder coating, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A toughened modified low-temperature curing low-gloss powder coating, comprising the following components by weight:

[0037]

[0038] First, accurately weigh the raw materials according to the formula composition of the 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 at a constant speed. The extruder is melted and extruded under the condition of 95-105°C, passed through the cooling roller and pressed into tablets, the tablets are cooled at natural temperature, and the flakes are roughly crushed by a pulverizer, and the obtained materials are ground by a pulverizer after cooling Fine grinding; in order to increase the dry powder fluidity of the powder and prevent powder agglomeration during the grinding process, add 0.1 part of desiccant AEROSIL Alu C, and then use a 180-mesh sieve to sieve, and finally get all the powder...

Embodiment 2

[0040] A toughened modified low-temperature curing low-gloss powder coating, comprising the following components by weight:

[0041]

[0042] First, accurately weigh the raw materials according to the formula composition of the 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 at a constant speed. The extruder is melted and extruded under the condition of 95-105°C, passed through the cooling roller and pressed into tablets, the tablets are cooled at natural temperature, and the flakes are roughly crushed by a pulverizer, and the obtained materials are ground by a pulverizer after cooling Fine grinding; in order to increase the dry powder fluidity of the powder and prevent powder agglomeration during the grinding process, add 0.1 part of desiccant AEROSIL Alu C, and then use a 180-mesh sieve to sieve, and finally get all the powder...

Embodiment 3

[0044] A toughened modified low-temperature curing low-gloss powder coating, comprising the following components by weight:

[0045]

[0046]

[0047]First, accurately weigh the raw materials according to the formula composition of the 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 at a constant speed. The extruder is melted and extruded under the condition of 95-105°C, passed through the cooling roller and pressed into tablets, the tablets are cooled at natural temperature, and the flakes are roughly crushed by a pulverizer, and the obtained materials are ground by a pulverizer after cooling Fine grinding; in order to increase the dry powder fluidity of the powder and prevent powder agglomeration during the grinding process, add 0.1 part of desiccant AEROSIL Alu C, and then use a 180-mesh sieve to sieve, and finally get all...

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Abstract

The invention discloses a toughened, modified, low-temperature-cued and low-glossiness powder coating. The toughened, modified, low-temperature-cued and low-glossiness powder coating comprises the following components in parts by weight: 28-35 parts of polyester resin, 28-35 parts of epoxy resin, 3-5 parts of delustering agent, 3-5 parts of toughening agent, 1-10 parts of pigment, 15-27.5 parts of filler, 1-5 parts of levelling agent, and 0.3-0.5 part of benzoin. According to the toughened, modified, low-temperature-cued and low-glossiness powder coating, proper raw materials are selected, and a proper dosage range is set, so as to obtain the low-temperature-cued, low-glossiness, high-toughness and impact-resistant powder coating; the bending resistance and the impact resistance of the low-temperature-curing and low-glossiness product can be improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a powder coating with low-temperature curing, low gloss, high toughness and impact resistance, a preparation method and an application. Background technique [0002] Epoxy-polyester powder coatings are powder coatings that are rapidly developed and industrialized after epoxy powder coatings. The usual film-forming substances of epoxy-polyester powder coatings are carboxyl polyester resins and epoxy resins. [0003] Generally, epoxy-polyester powder coatings have the following advantages: 1) The selection of raw materials is very wide, and there are many brands and specifications of polyester and epoxy resins; Low melt viscosity, good leveling and decorative properties of the coating film; 3) Epoxy-polyester coating film has good acid and alkali resistance. However, epoxy-polyester powder coatings also have the following disadvantages: 1) the biggest disadvantage of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D163/00C09D5/03C09D7/12
CPCC09D167/00C08L2205/03C08L2207/53C09D5/031C09D5/033C09D163/00C08L63/00C08K13/02C08K2003/2241C08K3/04C08K2003/3045C08L67/00
Inventor 李景红王春方解晓雷潘高健
Owner NIPPON PAINT TIANJIN
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