CN113881328A - Fluorine modified polyurea nano flame-retardant anti-explosion coating - Google Patents
Fluorine modified polyurea nano flame-retardant anti-explosion coating Download PDFInfo
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- CN113881328A CN113881328A CN202111336088.0A CN202111336088A CN113881328A CN 113881328 A CN113881328 A CN 113881328A CN 202111336088 A CN202111336088 A CN 202111336088A CN 113881328 A CN113881328 A CN 113881328A
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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
- C09D175/02—Polyureas
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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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
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
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Abstract
The invention discloses a fluorine modified polyurea nanometer flame-retardant and anti-explosion coating which comprises a component A and a component B, wherein the weight ratio of the component A to the component B is as follows: the formula of the component A comprises the following components: 30-45 parts of polyurea resin, 15-20 parts of polytetrafluoroethylene resin, 3-5 parts of coupling agent, 5-10 parts of flame retardant, 5-10 parts of nano zinc oxide, 20-30 parts of titanium white, 3-8 parts of titanium green, 2-5 parts of anti-settling agent, 1-2 parts of dispersing agent, 20-30-80 parts of barium sulfate and 5-15 parts of diluent; the formula of the component B comprises the following components: 30-40 parts of amine-terminated polyether and 3-5 parts of amine chain extender; the invention has the advantages of high bonding strength, strong adhesive force, high-efficiency corrosion resistance, aging resistance, wear resistance, scouring resistance, high-strength chemical medium resistance and electrical insulation, and forms an effective safety protection barrier on the surface of an object to reduce the danger of explosion.
Description
Technical Field
The invention relates to the technical field of chemical pigments, in particular to a fluorine modified polyurea nano flame-retardant anti-explosion coating.
Background
Domestic large-scale police vehicle equipment, military equipment and building equipment are long-term important functions in plateau, gobi, desert, forest open coastal areas and other areas; due to the corrosion action of sand wind, rain, snow, moisture, high and low temperature, acid and alkali sunshine for a long time, after the coating is used for a long time, the coating of each device can have the phenomena of pulverization, rusting, fading, peeling and the like, the original protective performance can be lost, the corrosion, the function failure and even the safety accident of some large-scale devices can be caused. Meanwhile, the temperature difference in the plateau area is too large, so that the night temperature sometimes reaches below 50 ℃, and the noon temperature sometimes reaches above 60 ℃, so that the performance of a stable system of some large-scale equipment is reduced, and even the functions of some equipment are damaged. And the destruction of violents to the facilities (such as incineration, chemical substance splashing and smashing) seriously damages vehicles, equipment and facilities, and particularly when the vehicles are in explosion danger, metal materials used by military vehicles (tanks, armored vehicles, off-road vehicles and the like) are high in rigidity and are easy to be punctured by explosive fragments, so that internal personnel are seriously injured. In addition, military facilities such as warehouses, defense works and the like are also easily damaged by the impact of explosives, so that great loss is caused; because the surface of the steel is not sticky, a plurality of fragments of the steel are formed in explosion and are splashed around under the impact of the explosion, great damage is formed, and the life of personnel is sometimes damaged. Therefore, the country needs to spend a great deal of material resources and financial resources on maintaining the equipment every year, and a great deal of resources are wasted.
In view of the above, it is necessary to prepare a functional coating with excellent comprehensive performance, corrosion resistance, temperature difference resistance, long protection period and good anti-explosion performance, and the functional coating is applied to large facilities such as police vehicle equipment, military equipment and construction equipment and is beneficial to the nation and the people.
Disclosure of Invention
The invention aims to solve the technical problems and provide a coating which can effectively prevent and buffer the impact strength of explosive fragments and reduce surface combustion, and after the coating is sprayed on the surface of vehicle facilities, the coating can greatly improve the protective performance of the vehicle and the facilities and avoid the damage of explosive shock waves and combustion to the facility structure.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a fluorine modified polyurea nanometer flame-retardant anti-explosion coating comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 5: 1;
the formula of the component A comprises the following components: 30-45 parts of polyurea resin, 15-20 parts of polytetrafluoroethylene, 3-5 parts of a coupling agent, 5-10 parts of a flame retardant, 5-10 parts of nano zinc oxide, 20-30 parts of titanium white, 3-8 parts of titanium green, 2-5 parts of an anti-settling agent, 1-2 parts of a dispersing agent, 20-30 parts of barium sulfate and 5-15 parts of a diluent;
the formula of the component B comprises the following components: 30-40 parts of amine-terminated polyether and 3-5 parts of amine chain extender.
A preparation method of a fluorine modified polyurea nanometer flame-retardant anti-explosion coating comprises the following steps:
step 1: adding polytetrafluoroethylene in the components into a reaction kettle according to parts by weight, heating to 260 ℃ for dissolution, adding a coupling agent according to the weight ratio, stirring for 10-15 minutes, and keeping the temperature constant for 2 hours; preparing a hydrocarbon polytetrafluoroethylene solution with functional groups;
step 2: the polyurea resin, the flame retardant, the nano zinc oxide, the titanium dioxide, the titanium greenish, the anti-settling agent, the dispersing agent and the barium sulfate in the components are put into a stirring cylinder according to the weight ratio, stirred for 30 minutes, added with the diluent to adjust the viscosity, and then ground, wherein the ground fineness of the components is less than 60 um;
and step 3: adding the polytetrafluoroethylene solution prepared in the step 1 into the step 2, mixing and stirring for 30 minutes, standing for 6 hours, and preparing a component A;
and 4, step 4: adding the amino-terminated polyether and the amine chain extender into a stirring cylinder according to the weight ratio, stirring, heating the stirring cylinder to 50 ℃, stirring for 30 minutes, and standing for 8 hours to prepare a component B;
and 5: during construction, the component A and the component B are mixed and stirred according to the proportion and are applied to the surface of an object to be coated in a spraying mode.
Compared with the prior art, the invention has the following beneficial effects:
1. the fluorine modified polyurea nano flame-retardant anti-explosion coating disclosed by the invention has the characteristics of multiple anticorrosive coatings, is stable in performance, strong in corrosion resistance, free from pollution to the atmosphere and environment-friendly and multifunctional.
2. The polyurea resin in the fluorine modified polyurea nano flame-retardant and anti-explosion coating has excellent corrosion resistance, high solid content, low viscosity and good tensile strength, and the elongation at break can reach 300 percent.
3. The polytetrafluoroethylene in the fluorine modified polyurea nano flame-retardant anti-explosion coating has excellent non-adhesiveness, corrosion resistance (particularly in the aspect of strong acid and strong alkali resistance, because the polytetrafluoroethylene is not dissolved in acid and alkali and has no corrosion to the polytetrafluoroethylene by the acid and alkali), weather aging resistance and low friction performance, and simultaneously shows certain solubility, crosslinkability and ultraviolet resistance due to the existence of hydrocarbon olefin composition chain segments with different functional groups.
4. The fluorine modified polyurea nano flame-retardant anti-explosion coating has the advantages of high bonding strength, strong adhesive force, high efficiency, corrosion resistance, ageing resistance, wear resistance, scouring resistance, high chemical medium resistance and electrical insulation, forms an effective safe protection barrier on the surface of an object, reduces the explosion risk, has strong affinity with a steel part, forms a compact protection layer on the surface of the steel part, has high elongation at break, can absorb energy when a heavy object strikes the surface, prevents ignition, and plays a role in explosion prevention. When the object explodes, the coating has high-strength viscosity, so that the impact strength of the explosive object can be reduced and buffered, and damage to facilities and casualties of people are avoided.
5. The fluorine modified polyurea nano flame-retardant anti-explosion coating has high passivation property, can effectively inhibit, prevent and delay the occurrence of corrosion of steel parts, can be directly constructed in a low-temperature and high-humidity environment to prevent sparks generated by friction and collision, reduce explosion accidents, and prevent broken ceramic chips and silicone oil from splashing and damage on power transmission equipment caused by explosion due to electrical reasons.
6. The fluorine modified polyurea nano flame-retardant anti-explosion coating has the following characteristics:
(1) basic Properties
Dry film thickness: not less than 500 mu m
② applicable temperature: -190 ℃ to 250 DEG C
(2) Physical Properties
The tensile strength is 20MPA, and the tensile strength is higher than that of the conventional steel plate,
elongation at break: more than or equal to 200 percent,
③ tear strength: 120-130N/MM
Adhesion with metal base material: 6 MPA.
(3) Chemical resistance
Salt fog resistance, namely neutral salt fog resistance of more than or equal to 3000h
Acid and alkali resistance: 30% NaOH solution, no abnormality for more than 30 days
(4) Other properties
Flame retardancy: grade A2
The contact angle is more than or equal to 90.
Detailed Description
The present invention is further illustrated by the following examples, which include, but are not limited to, the following examples.
Example 1
The fluorine modified polyurea nanometer flame-retardant anti-explosion coating comprises a component A and a component B, wherein the weight ratio of the component A to the component B is as follows: 5: 1;
the formula of the component A comprises the following components: 32 parts of polyurea resin, 16 parts of polytetrafluoroethylene, 3 parts of coupling agent, 6 parts of flame retardant, 6 parts of nano zinc oxide, 22 parts of titanium dioxide, 4 parts of titanium cyan, 3 parts of anti-settling agent, 1 part of dispersing agent, 22 parts of barium sulfate and 6 parts of diluent;
the formula of the component B comprises the following components: 33 parts of amino-terminated polyether and 3 parts of amine chain extender.
A preparation method of a fluorine modified polyurea nanometer flame-retardant anti-explosion coating comprises the following steps:
step 1: adding polytetrafluoroethylene in the components into a reaction kettle according to parts by weight, heating to 260 ℃ for dissolution, adding a coupling agent according to the weight ratio, stirring for 12 minutes, and keeping the temperature constant for 2 hours; preparing a hydrocarbon polytetrafluoroethylene solution with functional groups;
step 2: the polyurea resin, the flame retardant, the nano zinc oxide, the titanium dioxide, the titanium greenish, the anti-settling agent, the dispersing agent and the barium sulfate in the components are put into a stirring cylinder according to the weight ratio, stirred for 30 minutes, added with the diluent to adjust the viscosity, and then ground, wherein the ground fineness of the components is less than 60 um;
and step 3: adding the polytetrafluoroethylene solution prepared in the step 1 into the step 2, mixing and stirring for 30 minutes, standing for 6 hours, and preparing a component A;
and 4, step 4: adding the amino-terminated polyether and the amine chain extender into a stirring cylinder according to the weight ratio, stirring, heating the stirring cylinder to 50 ℃, stirring for 30 minutes, and standing for 8 hours to prepare a component B;
and 5: during construction, the component A and the component B are mixed and stirred according to the proportion and are applied to the surface of an object to be coated in a spraying mode.
The paint obtained in example 1 was tested and the test report is as follows:
example 2
A fluorine modified polyurea nanometer flame-retardant anti-explosion coating comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 5: 1;
the formula of the component A comprises the following components: 44 parts of polyurea resin, 18 parts of polytetrafluoroethylene, 4 parts of coupling agent, 8 parts of flame retardant, 9 parts of nano zinc oxide, 28 parts of titanium dioxide, 7 parts of titanium green, 4 parts of anti-settling agent, 2 parts of dispersing agent, 30 parts of barium sulfate and 14 parts of diluent;
the formula of the component B comprises the following components: 39 parts of amino-terminated polyether and 4 parts of amine chain extender.
A preparation method of a fluorine modified polyurea nanometer flame-retardant anti-explosion coating comprises the following steps:
step 1: adding polytetrafluoroethylene in the components into a reaction kettle according to parts by weight, heating to 260 ℃ for dissolution, adding a coupling agent according to the weight ratio, stirring for 15 minutes, and keeping the temperature constant for 2 hours; preparing a hydrocarbon polytetrafluoroethylene solution with functional groups;
step 2: the polyurea resin, the flame retardant, the nano zinc oxide, the titanium dioxide, the titanium greenish, the anti-settling agent, the dispersing agent and the barium sulfate in the components are put into a stirring cylinder according to the weight ratio, stirred for 30 minutes, added with the diluent to adjust the viscosity, and then ground, wherein the ground fineness of the components is less than 60 um;
and step 3: adding the polytetrafluoroethylene solution prepared in the step 1 into the step 2, mixing and stirring for 30 minutes, standing for 6 hours, and preparing a component A;
and 4, step 4: adding the amino-terminated polyether and the amine chain extender into a stirring cylinder according to the weight ratio, stirring, heating the stirring cylinder to 50 ℃, stirring for 30 minutes, and standing for 8 hours to prepare a component B;
and 5: during construction, the component A and the component B are mixed and stirred according to the proportion and are applied to the surface of an object to be coated in a spraying mode.
The paint obtained in example 2 was tested, and the test report is as follows:
the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the modifications or variations that are not essential to the spirit and the concept of the main body of the present invention can be made, and the technical problems to be solved by the embodiments are still consistent with the present invention, and should be included in the scope of the present invention.
Claims (2)
1. The fluorine modified polyurea nanometer flame-retardant and anti-explosion coating is characterized by comprising a component A and a component B, wherein the weight ratio of the component A to the component B is 5: 1;
the formula of the component A comprises the following components: 30-45 parts of polyurea resin, 15-20 parts of polytetrafluoroethylene, 3-5 parts of a coupling agent, 5-10 parts of a flame retardant, 5-10 parts of nano zinc oxide, 20-30 parts of titanium white, 3-8 parts of titanium green, 2-5 parts of an anti-settling agent, 1-2 parts of a dispersing agent, 20-30 parts of barium sulfate and 5-15 parts of a diluent;
the formula of the component B comprises the following components: 30-40 parts of amine-terminated polyether and 3-5 parts of amine chain extender.
2. The preparation method of the fluorine modified polyurea nanometer flame-retardant and anti-explosion coating according to claim 1, which is characterized in that: the method comprises the following steps:
step 1: adding polytetrafluoroethylene in the components into a reaction kettle according to parts by weight, heating to 260 ℃ for dissolution, adding a coupling agent according to the weight ratio, stirring for 10-15 minutes, and keeping the temperature constant for 2 hours; preparing a hydrocarbon polytetrafluoroethylene solution with functional groups;
step 2: the polyurea resin, the flame retardant, the nano zinc oxide, the titanium dioxide, the titanium greenish, the anti-settling agent, the dispersing agent and the barium sulfate in the components are put into a stirring cylinder according to the weight ratio, stirred for 30 minutes, added with the diluent to adjust the viscosity, and then ground, wherein the ground fineness of the components is less than 60 um;
and step 3: adding the polytetrafluoroethylene solution prepared in the step 1 into the step 2, mixing and stirring for 30 minutes, standing for 6 hours, and preparing a component A;
and 4, step 4: adding the amino-terminated polyether and the amine chain extender into a stirring cylinder according to the weight ratio, stirring, heating the stirring cylinder to 50 ℃, stirring for 30 minutes, and standing for 8 hours to prepare a component B;
and 5: during construction, the component A and the component B are mixed and stirred according to the proportion and are applied to the surface of an object to be coated in a spraying mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111336088.0A CN113881328A (en) | 2021-11-12 | 2021-11-12 | Fluorine modified polyurea nano flame-retardant anti-explosion coating |
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| CN202111336088.0A CN113881328A (en) | 2021-11-12 | 2021-11-12 | Fluorine modified polyurea nano flame-retardant anti-explosion coating |
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2021
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Application publication date: 20220104 |