CN112980280A - Anti-cracking coating - Google Patents
Anti-cracking coating Download PDFInfo
- Publication number
- CN112980280A CN112980280A CN201911288125.8A CN201911288125A CN112980280A CN 112980280 A CN112980280 A CN 112980280A CN 201911288125 A CN201911288125 A CN 201911288125A CN 112980280 A CN112980280 A CN 112980280A
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- sodium hexametaphosphate
- cracking coating
- solid
- cracking
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
- C09D133/12—Homopolymers or copolymers of methyl methacrylate
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an anti-cracking coating which comprises the following raw materials in parts by weight: 10-60 parts of sodium hexametaphosphate; 10-40 parts of polymethyl methacrylate; 10-30 parts of triethylamine; 2-12 parts of epoxy resin; 2-10 parts of nano silicon dioxide; 1-5 parts of phenoxyethanol; 2-6 parts of azodiisobutyronitrile. The anti-cracking coating disclosed by the invention takes sodium hexametaphosphate as a main component, can uniformly distribute all internal components by utilizing the moisture absorption performance of the sodium hexametaphosphate, has certain mechanical strength, and is not easy to deteriorate and age.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to an anti-cracking coating.
Background
At present, along with the increasing requirements of people on daily necessities such as vehicles, home furniture and the like, higher requirements are also put forward on coatings of the articles, and the coatings are required to have certain mechanical properties except for basic decoration and protection functions of the coatings. The traditional coating is generally prepared by adding inorganic components into organic solvent resin, and has the defect of poor fusibility and uneven component distribution.
Sodium hexametaphosphate is a white odorless crystalline powder, is insoluble in organic solvents, and has strong moisture absorption performance. Can be complexed with metal magnesium, calcium and the like to generate soluble complex compounds. Sodium hexametaphosphate is commonly used as a water softener, a water treatment agent, a corrosion inhibitor, a flotation agent, a dispersant, an auxiliary agent, a rust remover, a cement hardener and the like for industrial water.
The common method for producing sodium hexametaphosphate is to obtain sodium hexametaphosphate by neutralizing phosphoric acid with caustic soda, then polymerizing, quenching and solidifying. The preparation method mainly has the defects of insufficient arsenic removal, harm to human health caused by arsenic residues in products, complex preparation process, higher operation and control difficulty coefficient, discharge of pollution wastes, unstable product quality and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anti-cracking coating aiming at the defects of the prior art. The anti-cracking coating takes sodium hexametaphosphate as a main component, can uniformly distribute the internal components by utilizing the moisture absorption performance of the sodium hexametaphosphate, has certain mechanical strength, and is not easy to deteriorate and age.
In order to solve the technical problems, the invention adopts the technical scheme that: the anti-cracking coating is characterized by comprising the following raw materials in parts by weight:
10-60 parts of sodium hexametaphosphate; 10-40 parts of polymethyl methacrylate; 10-30 parts of triethylamine; 2-12 parts of epoxy resin; 2-10 parts of nano silicon dioxide; 1-5 parts of phenoxyethanol; 2-6 parts of azodiisobutyronitrile.
The anti-cracking coating is characterized by comprising the following raw materials in parts by weight:
30-50 parts of sodium hexametaphosphate; 22-28 parts of polymethyl methacrylate; 12-18 parts of triethylamine; 4-6 parts of epoxy resin; 4-8 parts of nano silicon dioxide; 1.5 to 2.5 portions of phenoxyethanol; 3-5 parts of azodiisobutyronitrile.
The anti-cracking coating is characterized in that the preparation method of the sodium hexametaphosphate comprises the following steps:
step one, mixing sodium hydroxide and phosphoric acid under the stirring condition to obtain a mixed system;
step two, reacting the mixed system obtained in the step one at the temperature of 150-250 ℃ in a nitrogen atmosphere to obtain a reacted system;
step three, introducing nitrogen into the reacted system for circulation until the reacted system is cooled to room temperature;
step four, separating the cooled system in the step three to obtain a solid;
step five, roasting the solid obtained in the step four;
and step six, cooling the solid roasted in the step five to room temperature to obtain sodium hexametaphosphate.
The anti-cracking coating is characterized in that the mass ratio of the sodium hydroxide to the phosphoric acid in the first step is (1-5): 1.
the anti-cracking coating is characterized in that the reaction time in the step two is 1-3 h.
The anti-cracking coating is characterized in that the roasting temperature in the fifth step is 500-800 ℃, and the roasting time is 3-6 h.
The anti-cracking coating is characterized in that in the sixth step, the solid is cooled by introducing nitrogen into the solid after being roasted in the fifth step.
Compared with the prior art, the invention has the following advantages:
1. the anti-cracking coating disclosed by the invention takes sodium hexametaphosphate as a main component, and the moisture absorption performance of the sodium hexametaphosphate is utilized to ensure that all the components in the coating are uniformly distributed, so that the coating has certain mechanical strength and is not easy to deteriorate and age.
2. The preparation method of the sodium hexametaphosphate is protected and cooled by nitrogen in the whole process, and the obtained product sodium hexametaphosphate has high purity and yield, simple preparation method, low raw material cost, easy control of the reaction process and no pollutant discharge.
The technical solution of the present invention is further described in detail with reference to the following examples.
Detailed Description
Example 1
The anti-cracking coating disclosed by the embodiment comprises the following components in parts by weight:
35 parts of sodium hexametaphosphate; 26 parts of polymethyl methacrylate; 16 parts of triethylamine; 5 parts of epoxy resin; 5 parts of nano silicon dioxide; 2 parts of phenoxyethanol; 3 parts of azobisisobutyronitrile;
the preparation method of the sodium hexametaphosphate comprises the following steps:
step one, mixing sodium hydroxide and phosphoric acid under the stirring condition to obtain a mixed system; the mass ratio of the sodium hydroxide to the phosphoric acid is 3: 1;
step two, reacting the mixed system obtained in the step one for 2 hours at the temperature of 200 ℃ in a nitrogen atmosphere to obtain a reacted system;
step three, introducing nitrogen into the reacted system for circulation until the reacted system is cooled to room temperature;
step four, separating the cooled system in the step three to obtain a solid;
step five, roasting the solid obtained in the step four; the roasting temperature is 600 ℃, and the roasting time is 4 hours;
sixthly, cooling the solid roasted in the fifth step to room temperature to obtain sodium hexametaphosphate; and cooling by introducing nitrogen into the solid after the roasting in the step five.
Example 2
The anti-cracking coating disclosed by the embodiment comprises the following components in parts by weight:
30 parts of sodium hexametaphosphate; 22 parts of polymethyl methacrylate; 12 parts of triethylamine; 4 parts of epoxy resin; 4 parts of nano silicon dioxide; 1.5 parts of phenoxyethanol; 3 parts of azobisisobutyronitrile;
the preparation method of the sodium hexametaphosphate comprises the following steps:
step one, mixing sodium hydroxide and phosphoric acid under the stirring condition to obtain a mixed system; the mass ratio of the sodium hydroxide to the phosphoric acid is 1: 1;
step two, reacting the mixed system obtained in the step one for 3 hours at the temperature of 150 ℃ in a nitrogen atmosphere to obtain a reacted system;
step three, introducing nitrogen into the reacted system for circulation until the reacted system is cooled to room temperature;
step four, separating the cooled system in the step three to obtain a solid;
step five, roasting the solid obtained in the step four; the roasting temperature is 500 ℃, and the roasting time is 6 hours;
sixthly, cooling the solid roasted in the fifth step to room temperature to obtain sodium hexametaphosphate; and cooling by introducing nitrogen into the solid after the roasting in the step five.
Example 3
The anti-cracking coating disclosed by the embodiment comprises the following components in parts by weight:
50 parts of sodium hexametaphosphate; 28 parts of polymethyl methacrylate; 18 parts of triethylamine; 6 parts of epoxy resin; 8 parts of nano silicon dioxide; 2.5 parts of phenoxyethanol; 5 parts of azobisisobutyronitrile;
the preparation method of the sodium hexametaphosphate comprises the following steps:
step one, mixing sodium hydroxide and phosphoric acid under the stirring condition to obtain a mixed system; the mass ratio of the sodium hydroxide to the phosphoric acid is 5: 1;
step two, reacting the mixed system obtained in the step one for 1h at the temperature of 250 ℃ in a nitrogen atmosphere to obtain a reacted system;
step three, introducing nitrogen into the reacted system for circulation until the reacted system is cooled to room temperature;
step four, separating the cooled system in the step three to obtain a solid;
step five, roasting the solid obtained in the step four; the roasting temperature is 800 ℃, and the roasting time is 3 hours;
sixthly, cooling the solid roasted in the fifth step to room temperature to obtain sodium hexametaphosphate; and cooling by introducing nitrogen into the solid after the roasting in the step five.
Example 4
The anti-cracking coating disclosed by the embodiment comprises the following components in parts by weight:
60 parts of sodium hexametaphosphate; 10 parts of polymethyl methacrylate; 10 parts of triethylamine; 2 parts of epoxy resin; 2 parts of nano silicon dioxide; 1 part of phenoxyethanol; 2 parts of azobisisobutyronitrile;
the preparation method of the sodium hexametaphosphate comprises the following steps:
step one, mixing sodium hydroxide and phosphoric acid under the stirring condition to obtain a mixed system; the mass ratio of the sodium hydroxide to the phosphoric acid is 1: 1;
step two, reacting the mixed system obtained in the step one for 3 hours at the temperature of 150 ℃ in a nitrogen atmosphere to obtain a reacted system;
step three, introducing nitrogen into the reacted system for circulation until the reacted system is cooled to room temperature;
step four, separating the cooled system in the step three to obtain a solid;
step five, roasting the solid obtained in the step four; the roasting temperature is 500 ℃, and the roasting time is 6 hours;
sixthly, cooling the solid roasted in the fifth step to room temperature to obtain sodium hexametaphosphate; and cooling by introducing nitrogen into the solid after the roasting in the step five.
Example 5
The anti-cracking coating disclosed by the embodiment comprises the following components in parts by weight:
10 parts of sodium hexametaphosphate; 40 parts of polymethyl methacrylate; 30 parts of triethylamine; 12 parts of epoxy resin; 10 parts of nano silicon dioxide; 5 parts of phenoxyethanol; 6 parts of azobisisobutyronitrile;
the preparation method of the sodium hexametaphosphate comprises the following steps:
step one, mixing sodium hydroxide and phosphoric acid under the stirring condition to obtain a mixed system; the mass ratio of the sodium hydroxide to the phosphoric acid is 5: 1;
step two, reacting the mixed system obtained in the step one for 1h at the temperature of 250 ℃ in a nitrogen atmosphere to obtain a reacted system;
step three, introducing nitrogen into the reacted system for circulation until the reacted system is cooled to room temperature;
step four, separating the cooled system in the step three to obtain a solid;
step five, roasting the solid obtained in the step four; the roasting temperature is 800 ℃, and the roasting time is 3 hours;
sixthly, cooling the solid roasted in the fifth step to room temperature to obtain sodium hexametaphosphate; and cooling by introducing nitrogen into the solid after the roasting in the step five.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. The anti-cracking coating is characterized by comprising the following raw materials in parts by weight:
10-60 parts of sodium hexametaphosphate; 10-40 parts of polymethyl methacrylate; 10-30 parts of triethylamine; 2-12 parts of epoxy resin; 2-10 parts of nano silicon dioxide; 1-5 parts of phenoxyethanol; 2-6 parts of azodiisobutyronitrile.
2. The anti-cracking coating as claimed in claim 1, wherein the raw materials comprise the following components in parts by weight:
30-50 parts of sodium hexametaphosphate; 22-28 parts of polymethyl methacrylate; 12-18 parts of triethylamine; 4-6 parts of epoxy resin; 4-8 parts of nano silicon dioxide; 1.5 to 2.5 portions of phenoxyethanol; 3-5 parts of azodiisobutyronitrile.
3. The anti-cracking coating as claimed in claim 1, wherein the preparation method of the sodium hexametaphosphate comprises the following steps:
step one, mixing sodium hydroxide and phosphoric acid under the stirring condition to obtain a mixed system;
step two, reacting the mixed system obtained in the step one at the temperature of 150-250 ℃ in a nitrogen atmosphere to obtain a reacted system;
step three, introducing nitrogen into the reacted system for circulation until the reacted system is cooled to room temperature;
step four, separating the cooled system in the step three to obtain a solid;
step five, roasting the solid obtained in the step four;
and step six, cooling the solid roasted in the step five to room temperature to obtain sodium hexametaphosphate.
4. The anti-cracking coating as claimed in claim 3, wherein the ratio of the amounts of the sodium hydroxide and the phosphoric acid in the first step is (1-5): 1.
5. the anti-cracking coating as claimed in claim 3, wherein the reaction time in the second step is 1-3 h.
6. The anti-cracking coating as claimed in claim 3, wherein the baking temperature in the fifth step is 500-800 ℃, and the baking time is 3-6 h.
7. An anti-cracking coating as claimed in claim 3, wherein the cooling in the sixth step is carried out by introducing nitrogen into the solid after the calcination in the fifth step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288125.8A CN112980280A (en) | 2019-12-15 | 2019-12-15 | Anti-cracking coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288125.8A CN112980280A (en) | 2019-12-15 | 2019-12-15 | Anti-cracking coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112980280A true CN112980280A (en) | 2021-06-18 |
Family
ID=76342770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911288125.8A Pending CN112980280A (en) | 2019-12-15 | 2019-12-15 | Anti-cracking coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112980280A (en) |
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2019
- 2019-12-15 CN CN201911288125.8A patent/CN112980280A/en active Pending
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Application publication date: 20210618 |