CN114702891A - Flame-retardant hydrophobic coating for electric energy metering box and preparation method thereof - Google Patents

Flame-retardant hydrophobic coating for electric energy metering box and preparation method thereof Download PDF

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Publication number
CN114702891A
CN114702891A CN202210376278.3A CN202210376278A CN114702891A CN 114702891 A CN114702891 A CN 114702891A CN 202210376278 A CN202210376278 A CN 202210376278A CN 114702891 A CN114702891 A CN 114702891A
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parts
flame
retardant
hexachlorophosphazene
weight
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Inventor
李熊
黄荣国
郝文涛
刘炼
王朝亮
李亦龙
宋磊
蒋群
肖涛
陆春光
金文德
丰佳
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State Grid Zhejiang Electric Power Co Ltd
Marketing Service Center of State Grid Zhejiang Electric Power Co Ltd
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State Grid Zhejiang Electric Power Co Ltd
Hefei University of Technology
Marketing Service Center of State Grid Zhejiang Electric Power Co Ltd
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Priority to CN202210376278.3A priority Critical patent/CN114702891A/en
Publication of CN114702891A publication Critical patent/CN114702891A/en
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/08—Polyurethanes from polyethers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C09D5/185—Intumescent paints
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/322—Ammonium phosphate
    • C08K2003/323—Ammonium polyphosphate

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention discloses a flame-retardant hydrophobic coating for an electric energy metering box and a preparation method thereof. The flame-retardant hydrophobic coating comprises flame-retardant functional resin, an intumescent flame retardant and water; the raw materials comprise the following components in parts by weight: 30-60 parts of flame-retardant functional resin, 10-30 parts of intumescent flame retardant and 40-70 parts of water; the flame-retardant functional resin comprises the following raw materials in parts by weight: 5-15 parts of hexachlorophosphazene, 5-15 parts of glycerol, 5-15 parts of fluoroalcohol, 15-45 parts of diisocyanate, 15-45 parts of polyether polyol, 0.5-1.5 parts of dimethylolpropionic acid, 0.5-1.5 parts of triethanolamine and 0.01-0.1 part of dibutyltin dilaurate. The flame-retardant hydrophobic coating has the flame-retardant and hydrophobic functions, and can improve the comprehensive performance of an electric energy metering box when coated on the conventional electric energy metering box.

Description

Flame-retardant hydrophobic coating for electric energy metering box and preparation method thereof
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a flame-retardant hydrophobic coating for an electric energy metering box and a preparation method thereof.
Background
At present, the ammeter of residential area is unified to concentrate on the open air and is placed, is protected by an electric energy metering box shell. In the face of combustion caused by short circuit and electric arc which may occur, the electric energy metering box needs to have excellent flame retardant capability; meanwhile, the electric energy metering box needs to have excellent hydrophobic performance due to the fact that the electric energy metering box is washed outdoors by wind and rain. The materials of the current electric energy metering box are roughly divided into three types: steel, plastic alloy and glass steel do not have the electric-energy metering box of a material and can satisfy above-mentioned fire-retardant and hydrophobic performance requirement simultaneously. Therefore, the coating with flame retardant and hydrophobic functions is researched and developed, and is coated on the existing electric energy metering box, so that the comprehensive performance of the electric energy metering box can be improved. Moreover, the period of developing and producing the electric energy metering box made of new materials can be saved, the capital spent for replacing the electric energy metering box is saved, and the problem of environmental pollution caused by scrapping the electric energy metering box is avoided.
Patent ZL201910992959.0 mentions a fire-proof and flame-retardant water-based UV coating and a preparation method thereof; patent ZL201310218618.0 mentions a flame retardant coating for interior walls. However, flame-retardant hydrophobic coatings for the housings of electrical energy metering boxes have not been available to date.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide the flame-retardant hydrophobic coating for the electric energy metering box, which is coated on the existing electric energy metering box, so that the electric energy metering box has flame-retardant and hydrophobic properties, and the comprehensive performance of the electric energy metering box is improved.
The technical scheme adopted by the invention is as follows: a flame-retardant hydrophobic coating for an electric energy metering box comprises flame-retardant functional resin, an intumescent flame retardant and water; the raw materials comprise the following components in parts by weight: 30-60 parts of flame-retardant functional resin, 10-30 parts of intumescent flame retardant and 40-70 parts of water;
the flame-retardant functional resin comprises the following raw materials in parts by weight: 5-15 parts of hexachlorophosphazene, 5-15 parts of glycerol, 5-15 parts of fluoroalcohol, 15-45 parts of diisocyanate, 15-45 parts of polyether polyol, 0.5-1.5 parts of dimethylolpropionic acid, 0.5-1.5 parts of triethanolamine and 0.01-0.1 part of dibutyltin dilaurate.
Further, the fluoroalcohol is selected from one or more of perfluorobutanol, perfluorohexanol and perfluorooctanol.
Further, the diisocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate and isophorone diisocyanate.
Further, the polyether polyol is selected from one or a mixture of polyethylene glycol, polypropylene glycol and poly 1, 4-butanediol.
Further, the intumescent flame retardant is selected from one or a mixture of ammonium polyphosphate, pentaerythritol, cyclodextrin, starch and lignin.
Further, the flame-retardant hydrophobic coating also comprises 1-3 parts by mass of a thickening agent.
The invention also provides a preparation method of the flame-retardant hydrophobic coating, which comprises the following steps:
1) adding hexachlorophosphazene, glycerol and fluoroalcohol into a container, adding tetrahydrofuran which is 3-5 times of hexachlorophosphazene in weight, and refluxing for 5-7 hours under the protection of nitrogen, wherein the structural formula of the obtained product is shown as follows:
Figure BDA0003590540590000021
2) adding diisocyanate which is 3 times of the weight of hexachlorophosphazene, polyether polyol which is 3 times of the weight of hexachlorophosphazene, dimethylolpropionic acid which is 0.1 times of the weight of hexachlorophosphazene and dibutyltin dilaurate which is 0.05 times of the weight of hexachlorophosphazene into the solution system obtained in the step 1), and reacting for 3-5 hours at the temperature of 80-90 ℃; the structural formula of the obtained product is shown as follows:
Figure BDA0003590540590000022
wherein R is1Is C4F9、C6F13Or C8F17；R2Is toluene, diphenylmethane or isophorone; r3Is a polyether polyol;
3) adding triethanolamine with the weight being 0.1 time that of hexachlorophosphazene into the solution system obtained in the step 2), reacting for 0.3-0.6 h, and cooling to room temperature;
4) adding deionized water with the weight 6 times that of hexachlorophosphazene into the solution system obtained in the step 3), dissolving ethylenediamine with the weight 0.1 time that of hexachlorophosphazene into the deionized water, and reacting for 0.3-0.6 hour; ethylene diamine is used as a chain extender of the waterborne polyurethane;
5) evaporating the solution system obtained in the step 4) at 55-65 ℃, recovering tetrahydrofuran, and adding an intumescent flame retardant to obtain the water-dispersible flame-retardant hydrophobic coating.
The invention has the following beneficial effects: the flame-retardant hydrophobic coating has the flame-retardant and hydrophobic functions, and is coated on the conventional electric energy metering box, so that the electric energy metering box has the flame-retardant and hydrophobic properties, and the comprehensive performance of the electric energy metering box is improved.
Detailed Description
The following detailed description of the embodiments of the present invention is provided to facilitate understanding and understanding of the technical aspects of the present invention. It is to be understood that the specific embodiments described herein are merely illustrative of some, but not all, embodiments of the invention and that other embodiments may be devised by those skilled in the art without the use of the inventive faculty and the scope of the invention is to be protected.
Example 1
The flame-retardant hydrophobic coating is prepared by mixing the following raw materials in parts by weight: 5 parts of hexachlorophosphazene, 5 parts of glycerol, 5 parts of fluoroalcohol, 15 parts of diisocyanate, 15 parts of polyether polyol, 1 part of dimethylolpropionic acid, 1 part of triethanolamine, 0.02 part of dibutyltin dilaurate, 10 parts of intumescent flame retardant, 45 parts of water and 1 part of thickener; the coating is prepared by the following method:
1) a container is charged with hexachlorophosphazene, glycerol and fluoroalcohol, 20 parts tetrahydrofuran are added, and reflux is carried out under nitrogen protection for 6 hours.
2) To the solution system obtained in 1) were added 15 parts of toluene diisocyanate, 15 parts of polyethylene glycol 2000, 4 parts of dimethylolpropionic acid, and 0.25 part of dibutyltin dilaurate, and the mixture was reacted at 85 ℃ for 4 hours.
3) Adding 1 part of triethanolamine into the solution system obtained in the step 2), reacting for 0.5 hour, and cooling to room temperature.
4) 90 parts of deionized water in which 0.5 part of ethylenediamine was dissolved was added to the solution system obtained in 3), and the reaction was carried out for 0.5 hour.
5) Evaporating the solution system obtained in step 4) at 60 ℃ and recovering tetrahydrofuran.
6) And adding an intumescent flame retardant (6 parts of ammonium polyphosphate, 2 parts of pentaerythritol and 2 parts of melamine) to obtain the water-dispersible flame-retardant hydrophobic coating.
Example 2
The flame-retardant hydrophobic coating is prepared by mixing the following raw materials in parts by weight: 10 parts of hexachlorophosphazene, 5 parts of glycerol, 10 parts of fluoroalcohol, 10 parts of diisocyanate, 10 parts of polyether polyol, 3 parts of dimethylolpropionic acid, 3 parts of triethanolamine, 0.25 part of dibutyltin dilaurate, 15 parts of intumescent flame retardant, 40 parts of water and 1.5 parts of thickener; the coating is prepared by the following method:
1) the hexachlorophosphazene, glycerol and fluoroalcohol are added to a vessel, 30 parts tetrahydrofuran are added, and the mixture is refluxed for 6 hours under nitrogen protection.
2) To the solution system obtained in 1) were added 10 parts of isophorone diisocyanate, 10 parts of polypropylene glycol 2000, 3 parts of dimethylolpropionic acid, and 0.25 part of dibutyltin dilaurate, and the mixture was reacted at 85 ℃ for 4 hours.
3) Adding 3 parts of triethanolamine into the solution system obtained in the step 2), reacting for 0.5 hour, and cooling to room temperature.
4) 60 parts of deionized water was added to the solution system obtained in 3), and 0.5 part of ethylenediamine was dissolved in the water, followed by reaction for 0.5 hour.
5) Evaporating the solution system obtained in step 4) at 60 ℃ and recovering tetrahydrofuran.
6) And adding 8 parts of intumescent flame retardant (ammonium polyphosphate, 4 parts of pentaerythritol and 3 parts of melamine) and 1 part of thickening agent to obtain the water-dispersible flame-retardant hydrophobic coating.
Example 3
The flame-retardant hydrophobic coating is prepared by mixing the following raw materials in parts by weight: 15 parts of hexachlorophosphazene, 15 parts of glycerol, 10 parts of fluoroalcohol, 15 parts of diisocyanate, 15 parts of polyether polyol, 5 parts of dimethylolpropionic acid, 5 parts of triethanolamine, 0.02 part of dibutyltin dilaurate, 30 parts of water and 0.5 part of thickening agent; the coating is prepared by the following method:
1) the hexachlorophosphazene, glycerol and fluoroalcohol are added to a vessel, 45 parts tetrahydrofuran are added, and the mixture is refluxed for 6 hours under nitrogen protection.
2) 15 parts of diphenylmethane diisocyanate, 15 parts of polyethylene glycol 400, 5 parts of dimethylolpropionic acid and 0.25 part of dibutyltin dilaurate were added to the solution system obtained in 1), and the mixture was reacted at 85 ℃ for 4 hours.
3) Adding 5 parts of triethanolamine into the solution system obtained in the step 2), reacting for 0.5 hour, and cooling to room temperature.
4) 60 parts of deionized water was added to the solution system obtained in 3), and 0.5 part of ethylenediamine was dissolved in the water, followed by reaction for 0.5 hour.
5) Evaporating the solution system obtained in step 4) at 60 ℃ and recovering tetrahydrofuran.
6) And adding 10 parts of intumescent flame retardant (ammonium polyphosphate, 5 parts of pentaerythritol and 5 parts of melamine) and 0.5 part of thickening agent to obtain the water-dispersible flame-retardant hydrophobic coating.
Example 4
The flame-retardant hydrophobic coating is prepared by mixing the following raw materials in parts by weight: 8 parts of hexachlorophosphazene, 8 parts of glycerol, 8 parts of fluoroalcohol, 8 parts of diisocyanate, 8 parts of polyether polyol, 2 parts of dimethylolpropionic acid, 0.5 part of triethanolamine, 0.02 part of dibutyltin dilaurate, 20 parts of intumescent flame retardant, 40 parts of water and 1.5 parts of thickener; the coating is prepared by the following method:
1) the hexachlorophosphazene, glycerol and fluoroalcohol are added to a vessel, 24 parts tetrahydrofuran are added, and the mixture is refluxed for 6 hours under nitrogen protection.
2) To the solution system obtained in 1) were added 8 parts of isophorone diisocyanate, 8 parts of polypropylene glycol 2000, 2 parts of dimethylolpropionic acid, 0.15 part of dibutyltin dilaurate, and reacted at 85 ℃ for 4 hours.
3) Adding 2 parts of triethanolamine into the solution system obtained in the step 2), reacting for 0.5 hour, and cooling to room temperature.
4) 40 parts of deionized water in which 0.5 part of ethylenediamine was dissolved was added to the solution system obtained in 3), and the reaction was carried out for 0.5 hour.
5) Evaporating the solution system obtained in step 4) at 60 ℃ and recovering tetrahydrofuran.
6) And adding 10 parts of intumescent flame retardant (ammonium polyphosphate, 5 parts of pentaerythritol and 5 parts of melamine) and 0.5 part of thickening agent to obtain the water-dispersible flame-retardant hydrophobic coating.
TABLE 1 fire-resistant time, expansion ratio and fire-retardant Properties of the fire-retardant coating
Examples Refractory time (GB 12441) Expansion multiplying power (GB 12441) Waterproof performance (GB/T1733)
1 15 minutes 10.6 Soaking in water for 24 hr without foaming
2 25 minutes 13.3 Soaking in water for 24 hr without foaming
3 20 minutes 11.2 Soaking in water for 24 hr without foaming
4 23 minutes 12.4 Soaking in water for 24 hr without foaming
The fire-retardant coatings in all the examples were tested for fire-retardant time, expansion ratio and water-proof performance according to the national standards GB 12441 (finishing type fire-retardant coating) and GB/T1733 (paint film water-proof test method). The results obtained are shown in Table 1. Therefore, the fire-resistant time of all the fire-resistant coatings is more than or equal to 15 minutes, and the fire-resistant requirements are met. The waterproof performance is not bubbling, and the waterproof performance meets the requirement of water resistance.

Claims (7)

1. The flame-retardant hydrophobic coating for the electric energy metering box is characterized by comprising flame-retardant functional resin, an intumescent flame retardant and water; the raw materials comprise the following components in parts by weight: 30-60 parts of flame-retardant functional resin, 10-30 parts of intumescent flame retardant and 40-70 parts of water;
the flame-retardant functional resin comprises the following raw materials in parts by weight: 5-15 parts of hexachlorophosphazene, 5-15 parts of glycerol, 5-15 parts of fluoroalcohol, 15-45 parts of diisocyanate, 15-45 parts of polyether polyol, 0.5-1.5 parts of dimethylolpropionic acid, 0.5-1.5 parts of triethanolamine and 0.01-0.1 part of dibutyltin dilaurate.
2. The flame-retardant hydrophobic coating material for electric energy metering boxes according to claim 1, wherein the fluoroalcohol is selected from the group consisting of perfluorobutanol, perfluorohexanol, perfluorooctanol, and mixtures thereof.
3. The flame retardant hydrophobic coating for electric energy metering box according to claim 1, wherein the diisocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate.
4. The flame-retardant hydrophobic coating for electric energy metering boxes according to claim 1, wherein the polyether polyol is selected from one or more of polyethylene glycol, polypropylene glycol and poly-1, 4-butanediol.
5. The flame-retardant hydrophobic coating for the electric energy metering box as claimed in claim 1, wherein the intumescent flame retardant is selected from one or a mixture of ammonium polyphosphate, pentaerythritol, cyclodextrin, starch and lignin.
6. The flame-retardant hydrophobic coating for the electric energy metering box as claimed in claim 1, characterized by further comprising 1-3 parts by mass of a thickening agent.
7. A process for the preparation of a flame-retardant hydrophobic coating according to any one of claims 1 to 6, characterized in that it comprises:
1) adding hexachlorophosphazene, glycerol and fluoroalcohol into a container, adding tetrahydrofuran which is 3-5 times of hexachlorophosphazene in weight, and refluxing for 5-7 hours under the protection of nitrogen, wherein the structural formula of the obtained product is shown as follows:
Figure FDA0003590540580000011
2) adding diisocyanate which is 3 times the weight of hexachlorophosphazene, polyether polyol which is 3 times the weight of hexachlorophosphazene, dimethylolpropionic acid which is 0.1 times the weight of hexachlorophosphazene and dibutyltin dilaurate which is 0.05 times the weight of hexachlorophosphazene into the solution system obtained in the step 1), and reacting for 3-5 hours at the temperature of 80-90 ℃; the structural formula of the obtained product is shown as follows:
Figure FDA0003590540580000021
wherein R is1Is C4F9、C6F13Or C8F17；R2Is toluene, diphenylmethane or isophorone; r3Is polyether polyol;
3) adding triethanolamine with the weight being 0.1 time that of hexachlorophosphazene into the solution system obtained in the step 2), reacting for 0.3-0.6 h, and cooling to room temperature;
4) adding deionized water with the weight 6 times that of hexachlorophosphazene into the solution system obtained in the step 3), dissolving ethylenediamine with the weight 0.1 time that of hexachlorophosphazene into the deionized water, and reacting for 0.3-0.6 hour;
5) evaporating the solution system obtained in the step 4) at 55-65 ℃, recovering tetrahydrofuran, and adding an intumescent flame retardant to obtain the water-dispersible flame-retardant hydrophobic coating.
CN202210376278.3A 2022-04-11 2022-04-11 Flame-retardant hydrophobic coating for electric energy metering box and preparation method thereof Pending CN114702891A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115286726A (en) * 2022-08-03 2022-11-04 科迈特新材料有限公司 Flame-retardant modifier for plastics and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106947380A (en) * 2017-03-15 2017-07-14 广东中星科技股份有限公司 A kind of environmental protection flame retardant anticorrosive paint based on polyurethane
CN106967288A (en) * 2016-12-23 2017-07-21 浙江工业大学 A kind of preparation method of aqueous polyurethane/fluorine-containing polyphosphazene nanometer tube composite materials
CN110204672A (en) * 2019-05-15 2019-09-06 北京化工大学 A kind of preparation method of phosphonitrile high molecular weight flame retardant
CN111574676A (en) * 2020-05-21 2020-08-25 上海工程技术大学 Flame-retardant aqueous polyurethane emulsion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106967288A (en) * 2016-12-23 2017-07-21 浙江工业大学 A kind of preparation method of aqueous polyurethane/fluorine-containing polyphosphazene nanometer tube composite materials
CN106947380A (en) * 2017-03-15 2017-07-14 广东中星科技股份有限公司 A kind of environmental protection flame retardant anticorrosive paint based on polyurethane
CN110204672A (en) * 2019-05-15 2019-09-06 北京化工大学 A kind of preparation method of phosphonitrile high molecular weight flame retardant
CN111574676A (en) * 2020-05-21 2020-08-25 上海工程技术大学 Flame-retardant aqueous polyurethane emulsion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115286726A (en) * 2022-08-03 2022-11-04 科迈特新材料有限公司 Flame-retardant modifier for plastics and preparation method thereof
CN115286726B (en) * 2022-08-03 2023-08-11 科迈特新材料有限公司 Flame retardant modifier for plastics and preparation method thereof

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