Protective coating applied to surface of solar panel bracket and preparation method thereof

A technology for solar panels and protective coatings, applied in coatings, polyester coatings, epoxy resin coatings, etc., can solve problems such as poor aging resistance, poor acid and alkali resistance, and achieve good acid and alkali resistance, Acid and alkali resistance and anti-aging properties are improved, and the effect of strong acid and alkali resistance

Inactive Publication Date: 2019-03-15

安徽兆拓新能源科技有限公司

9 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

But the acid and alkali resistance is no...

Method used

(1) The present invention adopts thermosetting fluorocarbon resin, glycerol alkyd resin, acrylic resin, modified epoxy resin, modified sepiolite, nano-titanium dioxide, sodium petroleum sulfonate, modified mica powder, multi-walled carbon Nanotubes, antioxidants, light stabilizers and solvents are used as raw materials, and the raw materials interact synergistically, and the prepared coating has good adhesion, strong acid and alkali resistance, and excellent anti-aging performance;

(2) the present invention prepares polyurethane prepolymer earlier, then epoxy resin is modified with polyurethane prepolymer, makes modified epoxy resin, and the modified epoxy resin prepared is resistant to acid and alkali and The anti-aging performance has been improved, synergistic with other raw materials and its preparation process is strictly controlled, so that the synergy between raw materials can be maximized, and the prepared coating has good acid and alkali resistan...

Abstract

The invention discloses a protective coating applied to the surface of a solar panel bracket. The protective coating applied to the surface of the solar panel bracket is prepared from the following raw materials in parts by weight: 20 to 30 parts of thermosetting fluorocarbon resin, 13 to 18 parts of glycerin alkyd resin, 17 to 26 parts of acrylic resin, 15 to 25 parts of modified epoxy resin, 6 to 13 parts of modified sepiolite, 2 to 4 parts of nano-titania, 1 to 3 parts of petroleum sodium sulphonate, 2 to 5 parts of modified mica powder, 0.3 to 0.8 part of multi-walled carbon nano-tubes, 1to 2 parts of an antioxidant, 2 to 4 parts of a light stabilizer and 30 to 50 parts of a solvent. According to the protective coating applied to the surface of the solar panel bracket provided by theinvention, the prepared coating has good adhesion force, strong acid resistance and alkaline resistance, and excellent anti-aging performance by controlling the types and the proportions of the raw materials.

Application Domain

Epoxy resin coatingsPolyester coatings

Technology Topic

SolventStrong acids +17

Examples

Experimental program(5)
Comparison scheme(4)
Effect test(1)

Example Embodiment

[0034] Example 1

[0035] This embodiment relates to a protective coating applied to the surface of a solar panel support, including the following raw materials by weight: 20 parts by weight of thermosetting fluorocarbon resin, 13 parts by glycerol alkyd resin, 17 parts by acrylic resin, and 15 parts by modified epoxy resin , 6 parts of modified sepiolite, 2 parts of nano titanium dioxide, 1 part of sodium petroleum sulfonate, 2 parts of modified mica powder, 0.3 parts of multi-walled carbon nanotubes, 1 part of antioxidant, 2 parts of light stabilizer and 30 parts of solvent Servings,

[0036] The preparation method of the modified sepiolite is as follows:

[0037] (1) Pour the sepiolite and water mixture into the hydrothermal kettle, and add the surfactant, at a temperature of 200°C and a pressure of 2MPa, the reaction is kept under pressure and stirred, discharged and filtered to obtain a filter cake. After the filter cake is mixed with 7% hydrochloric acid, the reaction is stirred, and then filtered, washed, dried and roasted to obtain pretreated sepiolite;

[0038] (2) Mix the melamine, glycerin and methanol uniformly, then add the pretreated sepiolite, heat and stir to mix uniformly, cool, add calcium bicarbonate, microwave treatment for 5 minutes, then stir and mix uniformly to obtain modified sepiolite.

[0039] Wherein, the preparation method of the modified epoxy resin is as follows:

[0040] (1) Add polyethylene glycol to the reactor, add acetone I after vacuum drying to obtain an acetone solution of polyethylene glycol, add diisocyanate compounds, acetone II, and catalyst A to another reactor to obtain diisocyanate Adding the acetone solution of polyethylene glycol to the acetone solution of diisocyanate compound dropwise, after dropping, controlling the temperature at 40-50°C and reacting for 100 minutes to obtain the polyurethane prepolymer for use;

[0041] (2) Put the epoxy resin into the reactor, add the solvent propylene glycol methyl ether, acetone III, and catalyst B after vacuum drying to obtain an epoxy resin reaction solution. Add the polyurethane prepolymer obtained in step (1) dropwise to the ring In the oxygen resin reaction solution, react at 60-65°C for 70 minutes after dropping to obtain modified epoxy resin.

[0042] Wherein, the preparation method of the modified mica powder is as follows:

[0043] (1) Preheat and dry the mica powder in a drying box at 100°C for 60 minutes, then add a 25% aqueous ammonia solution that accounts for 5% of the mass of the mica powder, stir at 60°C for 2 hours, filter out the mica powder, and dry;

[0044] (2) Put the mica powder in the nano-silica sol, and adopt the vacuum immersion adsorption process to mix the nano-silica sol with the mica powder to form a gel. After aging, it is formed by atmospheric pressure classification drying and hydrophobic treatment. Modified mica powder.

[0045] Wherein, the diameter of the multi-walled carbon nanotube is 30-60 nm.

[0046] Wherein, the light stabilizer is an ultraviolet absorber.

[0047] A method for preparing the protective coating applied on the surface of the solar panel support includes the following steps:

[0048] (1) Weigh thermosetting fluorocarbon resin, glycerol alkyd resin, acrylic resin, modified epoxy resin, modified sepiolite, nano titanium dioxide, sodium petroleum sulfonate, modified mica powder, multi-walled carbon nanometer according to the above formula Tubes, antioxidants, light stabilizers and solvents, spare;

[0049] (2) Put the solvent in the reaction kettle and raise the temperature to 40℃, then add modified sepiolite, nano titanium dioxide, sodium petroleum sulfonate, modified mica powder, multi-walled carbon nanotubes, and disperse uniformly at high speed to obtain mixture A ;

[0050] (3) Add thermosetting fluorocarbon resin, glycerol alkyd resin, acrylic resin, and modified epoxy resin to mixture A in sequence, control the temperature in the reactor to 40℃, the pressure to 2MPa, stir and mix evenly, and then add the antioxidant The protective coating on the surface of the solar panel support is obtained by uniformly dispersing the ultrasonic wave and the light stabilizer.

[0051] Wherein, the ultrasonic dispersion time in the step (3) is 10 minutes.

Example Embodiment

[0052] Example 2

[0053] This embodiment relates to a protective coating applied to the surface of a solar panel bracket, including the following parts by weight of raw materials: 30 parts by weight of thermosetting fluorocarbon resin, 18 parts by glycerol alkyd resin, 26 parts by acrylic resin, and 25 parts by modified epoxy resin , 13 parts of modified sepiolite, 4 parts of nano titanium dioxide, 3 parts of petroleum sodium sulfonate, 5 parts of modified mica powder, 0.8 parts of multi-walled carbon nanotubes, 2 parts of antioxidants, 4 parts of light stabilizers and 50 parts of solvents Servings,

[0054] The preparation method of the modified sepiolite is as follows:

[0055] (1) Pour the sepiolite and water mixture into the hydrothermal kettle, and add the surfactant, at a temperature of 240°C and a pressure of 5MPa, the reaction is kept and pressure-maintained, stirred, discharged and filtered to obtain a filter cake. After the filter cake is mixed with 13% hydrochloric acid by mass fraction, the reaction is stirred, and then filtered, washed, dried and roasted to obtain pretreated sepiolite;

[0056] (2) Mix melamine, glycerin and methanol evenly, then add pretreated sepiolite, heat and stir to mix evenly, cool, add calcium bicarbonate, microwave treatment for 10 minutes, then stir and mix well to obtain modified sepiolite.

[0057] Wherein, the preparation method of the modified epoxy resin is as follows:

[0058] (1) Add polyethylene glycol to the reactor, add acetone I after vacuum drying to obtain an acetone solution of polyethylene glycol, add diisocyanate compounds, acetone II, and catalyst A to another reactor to obtain diisocyanate Adding the acetone solution of polyethylene glycol to the acetone solution of diisocyanate compound dropwise, after dropping, controlling the temperature at 40-50°C and reacting for 100 minutes to obtain the polyurethane prepolymer for use;

[0059] (2) Put the epoxy resin into the reactor, add the solvent propylene glycol methyl ether, acetone III, and catalyst B after vacuum drying to obtain an epoxy resin reaction solution. Add the polyurethane prepolymer obtained in step (1) dropwise to the ring In the oxygen resin reaction solution, react at 60-65°C for 70 minutes after dropping to obtain modified epoxy resin.

[0060] Wherein, the preparation method of the modified mica powder is as follows:

[0061] (1) Preheat and dry the mica powder in a drying box at 130°C for 90 minutes, then add a 25% ammonia solution that accounts for 5% of the mass of the mica powder, stir at 70°C for 3 hours, filter out the mica powder, and dry;

[0062] (2) Put the mica powder in the nano-silica sol, and adopt the vacuum immersion adsorption process to mix the nano-silica sol with the mica powder to form a gel. After aging, it is formed by atmospheric pressure classification drying and hydrophobic treatment. Modified mica powder.

[0063] Wherein, the diameter of the multi-walled carbon nanotube is 30-60 nm.

[0064] Wherein, the light stabilizer is a hindered amine radical trap.

[0065] A method for preparing the protective coating applied on the surface of the solar panel support includes the following steps:

[0066] (1) Weigh thermosetting fluorocarbon resin, glycerol alkyd resin, acrylic resin, modified epoxy resin, modified sepiolite, nano titanium dioxide, sodium petroleum sulfonate, modified mica powder, multi-walled carbon nanometer according to the above formula Tubes, antioxidants, light stabilizers and solvents, spare;

[0067] (2) Put the solvent in the reaction kettle and raise the temperature to 50℃, then add modified sepiolite, nano titanium dioxide, sodium petroleum sulfonate, modified mica powder, multi-walled carbon nanotubes, and disperse uniformly at high speed to obtain mixture A ;

[0068] (3) Add thermosetting fluorocarbon resin, glycerol alkyd resin, acrylic resin, and modified epoxy resin to the mixture A in sequence, control the temperature in the reactor to 50℃, the pressure to 3MPa, stir and mix evenly, and then add the antioxidant The protective coating on the surface of the solar panel support is obtained by uniformly dispersing the ultrasonic wave and the light stabilizer.

[0069] Wherein, the ultrasonic dispersion time in the step (3) is 15 minutes.

Example Embodiment

[0070] Example 3

[0071] This embodiment relates to a protective coating applied to the surface of a solar panel support, including the following parts by weight of raw materials: 23 parts by weight of thermosetting fluorocarbon resin, 14 parts by glycerol alkyd resin, 20 parts by acrylic resin, and 18 parts by modified epoxy resin , 7 parts of modified sepiolite, 2.5 parts of nano titanium dioxide, 1.6 parts of petroleum sodium sulfonate, 3 parts of modified mica powder, 0.4 parts of multi-walled carbon nanotubes, 1.4 parts of antioxidants, 2.8 parts of light stabilizers and 35 parts of solvents Copies.

[0072] Wherein, the preparation method of the modified sepiolite is as follows:

[0073] (1) Pour the sepiolite and water mixture into the hydrothermal kettle, and add the surfactant, at a temperature of 220°C and a pressure of 4MPa, the reaction is kept under pressure and stirred, discharged and filtered to obtain a filter cake. After the filter cake is mixed with 10% hydrochloric acid, the reaction is stirred, and then filtered, washed, dried and roasted to obtain pretreated sepiolite;

[0074] (2) Mix melamine, glycerin and methanol uniformly, then add pretreated sepiolite, heat and stir to mix evenly, cool, add calcium bicarbonate, microwave treatment for 7 minutes, then stir and mix well to obtain modified sepiolite.

[0075] Wherein, the preparation method of the modified epoxy resin is as follows:

[0076] (1) Add polyethylene glycol to the reactor, add acetone I after vacuum drying to obtain an acetone solution of polyethylene glycol, add diisocyanate compounds, acetone II, and catalyst A to another reactor to obtain diisocyanate Adding the acetone solution of polyethylene glycol to the acetone solution of diisocyanate compound dropwise, after dropping, controlling the temperature at 40-50°C and reacting for 100 minutes to obtain the polyurethane prepolymer for use;

[0077] (2) Put the epoxy resin into the reactor, add the solvent propylene glycol methyl ether, acetone III, and catalyst B after vacuum drying to obtain an epoxy resin reaction solution. Add the polyurethane prepolymer obtained in step (1) dropwise to the ring In the oxygen resin reaction solution, react at 60-65°C for 70 minutes after dropping to obtain modified epoxy resin.

[0078] Wherein, the preparation method of the modified mica powder is as follows:

[0079] (1) Weigh 110 in the mica powder drying box for preheating and drying for 70 minutes, then add 25% ammonia solution (5% by mass of the mica powder), stir at 65°C for 2.3 hours, filter out the mica powder, and dry;

[0080] (2) Put the mica powder in the nano-silica sol, and adopt the vacuum immersion adsorption process to mix the nano-silica sol with the mica powder to form a gel. After aging, it is formed by atmospheric pressure classification drying and hydrophobic treatment. Modified mica powder.

[0081] Wherein, the diameter of the multi-walled carbon nanotube is 30-60 nm.

[0082] Wherein, the light stabilizer is an ultraviolet absorber.

[0083] A method for preparing the protective coating applied on the surface of the solar panel support includes the following steps:

[0084] (1) Weigh thermosetting fluorocarbon resin, glycerol alkyd resin, acrylic resin, modified epoxy resin, modified sepiolite, nano titanium dioxide, sodium petroleum sulfonate, modified mica powder, multi-walled carbon nanometer according to the above formula Tubes, antioxidants, light stabilizers and solvents, spare;

[0085] (2) Put the solvent in the reaction kettle and raise the temperature to 45°C, then add modified sepiolite, nano titanium dioxide, sodium petroleum sulfonate, modified mica powder, multi-walled carbon nanotubes, and disperse uniformly at high speed to obtain mixture A ;

[0086] (3) Add thermosetting fluorocarbon resin, glycerol alkyd resin, acrylic resin, and modified epoxy resin to the mixture A in sequence, control the temperature in the reactor to 45℃, the pressure to 2.3MPa, stir and mix evenly, and then add the Oxygen, light stabilizer, and ultrasonic are dispersed uniformly to obtain the protective coating on the surface of the solar panel support.

[0087] Wherein, the ultrasonic dispersion time in the step (3) is 11 minutes.

PUM

Property	Measurement	Unit
Diameter	30.0 ~ 60.0	nm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Strong acid and alkali resistance
good adhesion

Environment-friendly water-based bi-component polyurethane steel-structure anti-corrosion finish paint and preparation method

InactiveCN102604530AStrong acid and alkali resistancestrong adhesion

Owner:SHANGHAI MAMPLE NEW MATERIAL

Protective coating applied to surface of solar panel bracket and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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