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Corrosion-resistant pure polyester powder coating and preparation method thereof

A polyester powder, anti-corrosion technology, applied in the direction of powder coatings, polyester coatings, anti-corrosion coatings, etc., can solve the problems of coating softening, shedding, corrosion of equipment or appliances, etc., to improve anti-corrosion performance, increase adhesion, inhibit The effect of growth

Active Publication Date: 2022-01-21
浙江绿环新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the presence of ester groups in the polyester structure, pure polyester powder coatings are easily hydrolyzed in humid environments, and when most of the equipment or appliances are exposed to sewage, rain, etc. for a long time, the coating is prone to softening or peeling off, resulting in Equipment or appliances are corroded and need to be resolved urgently

Method used

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  • Corrosion-resistant pure polyester powder coating and preparation method thereof
  • Corrosion-resistant pure polyester powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw materials of corrosion-resistant pure polyester powder coating include: polyester resin 40kg, methyl methacrylate 3kg, triethylenetetramine 1kg, nano-titanium dioxide 4kg, hyperbranched polymer 4kg, curing agent T1055kg, polybutylacrylate 1kg, lemon 1kg tributyl ester, 0.1kg sulfur, 2kg monoglyceride stearate, 1kg organomodified polysiloxane, 2kg antioxidant BHT, 4kg composite filler, 5kg caprylic acid.

[0028] The composite filler is composed of white carbon black and silicon carbide in a mass ratio of 1:3.

[0029] The preparation method of the above-mentioned corrosion-resistant pure polyester powder coating comprises the following steps:

[0030] Step 1. Add methyl methacrylate to 3kg methanol and mix evenly to obtain a premix; add triethylenetetramine to the reactor, add 40kg N,N-dimethylformamide and stir until completely dissolved, and add Stir the premix solution at a speed of 50r / min for 10min, raise the temperature to 100°C, and stir for 2h to obtain...

Embodiment 2

[0034] The raw materials of corrosion-resistant pure polyester powder coating include: polyester resin 100kg, methyl methacrylate 1kg, triethylenetetramine 3kg, nano-titanium dioxide 2kg, hyperbranched polymer 6kg, curing agent T1051kg, polybutylacrylate 5kg, lemon 0.1kg of tributyl acid, 1kg of sulfur, 1kg of glyceryl tristearate, 2kg of phosphoric acid ester modified acrylic leveling agent, 1kg of antioxidant TNP, 15kg of composite filler, 1kg of lauric acid.

[0035] The composite filler is composed of white carbon black and silicon carbide in a mass ratio of 3:1.

[0036] The preparation method of the above-mentioned corrosion-resistant pure polyester powder coating comprises the following steps:

[0037] Step 1. Add methyl methacrylate to 8kg methanol and mix evenly to obtain a premix; add triethylenetetramine to the reactor, add 20kg N,N-dimethylformamide and stir until completely dissolved, and add The premix was stirred for 30 minutes at a speed of 10 r / min, heated to...

Embodiment 3

[0041] The raw materials of corrosion-resistant pure polyester powder coating include: polyester resin 60kg, methyl methacrylate 2.5kg, triethylenetetramine 1.5kg, nano-titanium dioxide 3.5kg, hyperbranched polymer 4.5kg, curing agent T1054kg, polyacrylate butyl Esters 2kg, tributyl citrate 0.7kg, sulfur 0.2kg, polyethylene glycol 2001.7kg, fluorine-modified acrylic leveling agent 1.2kg, antioxidant TPP 1.7kg, composite filler 6kg, myristic acid 4kg.

[0042] The composite filler is composed of white carbon black and silicon carbide in a mass ratio of 3:5.

[0043] The preparation method of the above-mentioned corrosion-resistant pure polyester powder coating comprises the following steps:

[0044] Step 1. Add methyl methacrylate to 4kg methanol and mix evenly to obtain a premix; add triethylenetetramine to the reactor, add 35kg N,N-dimethylformamide and stir until completely dissolved, and add The premix was stirred at a speed of 40r / min for 15min, heated to 80°C, and stirred ...

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Abstract

The invention discloses a corrosion-resistant pure polyester powder coating which is prepared from the following raw materials: polyester resin, methyl methacrylate, triethylene tetramine, nano titanium dioxide, a hyperbranched polymer, a curing agent T105, poly (butyl acrylate), tributyl citrate, sulfur, a dispersing agent, a flatting agent, an antioxidant, a composite filler and saturated fatty acid. The mass ratio of the polyester resin to the methyl methacrylate to the triethylene tetramine to the nano titanium dioxide to the hyperbranched polymer to the curing agent T105 to the poly (butyl acrylate) to the tributyl citrate to the sulfur to the dispersing agent to the flatting agent to the antioxidant to the composite filler to the saturated fatty acid is (40-100):(1-3):(1-3):(2-4):(4-6):(1-5):(1-5):(0.1-1):(0.1-1):(1-2):(1-2):(1-2):(4-15):(1-5). The invention also discloses a preparation method of the corrosion-resistant pure polyester powder coating.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to corrosion-resistant pure polyester powder coatings and a preparation method thereof. Background technique [0002] Powder coating is a kind of green coating without volatile solvents. It has the advantages of no solvent, low pollution, high material utilization rate and low energy consumption. It is widely used in pipelines, metals, outdoor structural parts and other facilities. The powder coating uses the resin and the curing agent to undergo a crosslinking reaction after heating to form an infusible hard coating. Even if the ambient temperature is high, the coating will only decompose and will not soften like a thermoplastic resin coating, so it has a relatively high performance. Strong mechanical properties, so powder coatings are often used as anti-corrosion coatings in outdoor components (such as metal guardrails, railways, and road traffic facilities). [0003] Pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/03C09D5/14C09D5/08C09D7/65
CPCC09D167/00C09D5/033C09D5/14C09D5/08C08K2003/2241C08K2201/011C08L79/02C08K9/08C08K3/22
Inventor 阮惬冰黄心一李俊杰
Owner 浙江绿环新材料科技有限公司
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