CN109749585B - High-solid-content novolac epoxy glass flake anticorrosive paint and preparation method thereof - Google Patents
High-solid-content novolac epoxy glass flake anticorrosive paint and preparation method thereof Download PDFInfo
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- CN109749585B CN109749585B CN201811488647.8A CN201811488647A CN109749585B CN 109749585 B CN109749585 B CN 109749585B CN 201811488647 A CN201811488647 A CN 201811488647A CN 109749585 B CN109749585 B CN 109749585B
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Abstract
The invention discloses a high-solid-content novolac epoxy glass flake anticorrosive paint and a preparation method thereof, belonging to the field of heavy corrosion resistance. The anticorrosive paint consists of a component A and a component B, wherein the component A comprises the following components in parts by mass: composite novolac epoxy resin, toughening modified resin, pigment, glass flake powder, filler, rheological additive and solvent; the component B comprises the following components in parts by mass: amine curing agent and solvent. According to the invention, through the interaction among the components, the coating has the characteristics of high solid content, excellent chemical corrosion resistance and one-time construction film thickness, and after the coating is coated on the inner walls of the cabin body and the tank body, the coating can well resist the corrosion of chemicals such as acid, alkali, organic solvent, oily sewage and the like, the service life of the cabin body and the tank body is prolonged, and the maintenance cost is saved.
Description
Technical Field
The invention relates to the field of heavy corrosion resistance, and relates to a high-solid-content novolac epoxy glass flake anticorrosive paint and a preparation method thereof, which can be used as a protective material for inner walls of chemical cabins and chemical tank bodies.
Background
The inner walls of cabins and tanks for storing and transporting chemicals need to be in direct contact with the chemicals, the cabins and tanks are mostly made of steel and alloy products, and are easy to corrode when in contact with corrosive chemicals, so that the service lives of the cabins and tanks are greatly shortened. Epoxy resin is widely applied to the field of tank body corrosion prevention due to excellent chemical resistance and good thermal stability, but common epoxy coating is low in solid content and low in one-time coating film thickness, needs to be constructed in multiple ways, generates a large amount of voc emission in the using process, and brings certain harm to the environment and the health of constructors. Meanwhile, the common epoxy coating has common tolerance to substances such as strong acid, methanol and the like, so that the maintenance period of the tank body for storing the substances with strong corrosivity is short, and the maintenance difficulty of the tank body is often high. Therefore, the market needs a high-performance anticorrosive paint which has solid content higher than 90%, is resistant to 25% acid-base solution and has a film forming rate of more than 200 microns at one time.
Disclosure of Invention
The invention aims to solve the problems and provides a high-solid-content novolac epoxy glass flake anticorrosive paint with high chemical resistance and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
the high-solid-content novolac epoxy glass flake anticorrosive paint is characterized by comprising the following components in parts by weight: the anticorrosive paint consists of a component A and a component B, wherein the component A and the component B comprise the following components:
the component A comprises:
10-50 parts of composite novolac epoxy resin, 1-30 parts of toughening modified resin, 1-30 parts of pigment, 1-30 parts of glass flake powder, 1-30 parts of filler, 1-20 parts of rheological additive and 1-20 parts of solvent;
and B component:
50-90 parts of amine curing agent and 1-30 parts of solvent.
In some preferred embodiments:
the component A comprises:
30-50 parts of composite novolac epoxy resin, 5-15 parts of toughened modified resin, 8-15 parts of pigment, 10-25 parts of glass flake powder, 5-15 parts of filler, 1-5 parts of rheological additive and 1-10 parts of solvent;
and B component:
70-90 parts of amine curing agent and 10-30 parts of solvent.
The technical scheme of the invention is as follows: the composite novolac epoxy resin is prepared from the following components in a mass ratio of 15-25: 15-25 of novolac epoxy resin and epoxy resin;
preferably: the novolac epoxy resin is NPPN-638S novolac epoxy resin, F44 novolac epoxy resin or NPPN-631 novolac epoxy resin;
preferably: the epoxy resin is NPEL-128 epoxy resin or 828 epoxy resin.
The technical scheme of the invention is as follows: the toughening modified resin is selected from one or more of polypropylene glycol diglycidyl ether and trimethylolpropane triglycidyl ether.
The technical scheme of the invention is as follows: the pigment is selected from one or more of anatase titanium dioxide and carbon black powder; the glass flake powder is selected from one or more of 80 meshes, 100 meshes, 120 meshes, 150 meshes and 200 meshes; the filler is one or more selected from sericite, precipitated barium sulfate and quartz powder.
The technical scheme of the invention is as follows: the rheological additive is prepared from the following components in a mass ratio of 0.5-1: 1-2: 0.5-1 of organic bentonite, fumed silica and polyamide wax powder.
The technical scheme of the invention is as follows: the solvent of the component A and the component B is selected from one or more of dimethylbenzene, propylene glycol methyl ether alcohol acid ester, cyclohexanone and n-butanol.
The technical scheme of the invention is as follows: : the amine curing agent is selected from one or more of modified alicyclic amine and phenolic aldehyde amine.
A preparation method of the high-solid-content novolac epoxy glass flake anticorrosive paint comprises the following steps:
the preparation method of the component A comprises the following steps:
firstly, uniformly stirring and dispersing the composite novolac epoxy resin, the toughened modified resin and a part of solvent at a high speed to obtain a mixture; secondly, adding a rheological additive into the mixture, uniformly dispersing at a high speed, adding pigment and filler, fully stirring at a high speed, uniformly dispersing, and then putting into a grinder to disperse until the fineness is less than or equal to 40 mu m; after grinding, adding glass flake powder, dispersing uniformly at a high speed, adding the other part of solvent, and mixing uniformly for later use;
the preparation method of the component B comprises the following steps:
adding the amine curing agent and the solvent in a formula amount into a stirring kettle, and uniformly dispersing at a high speed for later use;
the mass ratio of the component A to the component B is 3-15: 1.
the preparation method comprises the following steps: in the preparation method of the component A, one part of solvent is n-butanol, and the other part of solvent is dimethylbenzene.
The invention has the beneficial effects that:
according to the invention, through the interaction among the glass flake powder, the composite novolac epoxy resin, the toughening modified resin, the pigment, the filler, the rheological additive and the amine curing agent, the coating has the characteristics of high solid content, excellent chemical corrosion resistance and one-step film thickness, and after being coated on the inner walls of the cabin body and the tank body, the coating can well resist the corrosion of chemicals such as acid, alkali, organic solvents, oily sewage and the like, the service lives of the cabin body and the tank body are prolonged, and the maintenance cost is saved. The concentration of acid and alkali resistant solution is 25%, and the anti-sagging property is higher than 200 micrometers.
Detailed Description
The invention is further illustrated by the following examples, without limiting the scope of the invention:
the novolac epoxy resin and the bisphenol A epoxy resin are all commercial products.
TABLE 1 ingredients and amounts of the components of examples 1-3
TABLE 1 ingredients and amounts of comparative examples 1-3
Preparation methods of examples 1 to 3 and comparative examples 1 to 3:
the preparation method of the component A comprises the following steps:
firstly, uniformly stirring and dispersing the composite novolac epoxy resin, the toughening modified resin and the solvent at a high speed to obtain a mixture; secondly, adding a rheological additive into the mixture, uniformly dispersing at a high speed, adding pigment and filler, fully stirring at a high speed, uniformly dispersing, and then putting into a grinder to disperse until the fineness is less than or equal to 40 mu m; after grinding, adding glass flake powder, dispersing uniformly at a high speed, adding dimethylbenzene, and mixing uniformly for later use;
the preparation method of the component B comprises the following steps:
adding the amine curing agent and the solvent in a formula amount into a stirring kettle, and uniformly dispersing at a high speed for later use;
the mass ratio of the component A to the component B is 10: 1.
the samples obtained in examples 1-3 and comparative examples 1-3 were tested for solid content, flexibility, acid and alkali resistance, oily water resistance, methanol resistance, salt mist resistance and sagging property, and the test results are shown in table 2:
TABLE 2
Claims (7)
1. The high-solid-content novolac epoxy glass flake anticorrosive paint is characterized by comprising the following components in parts by weight: the anticorrosive paint consists of a component A and a component B, wherein the component A and the component B comprise the following components:
the component A comprises:
10-50 parts of composite novolac epoxy resin, 1-30 parts of toughening modified resin, 1-30 parts of pigment, 1-30 parts of glass flake powder, 1-30 parts of filler, 1-20 parts of rheological additive and 1-20 parts of solvent;
and B component:
50-90 parts of amine curing agent and 1-30 parts of solvent;
wherein: the composite novolac epoxy resin is prepared from the following components in a mass ratio of 15-25: 15-25 of novolac epoxy resin and epoxy resin; the novolac epoxy resin is NPPN-638S novolac epoxy resin, F44 novolac epoxy resin or NPPN-631 novolac epoxy resin; the epoxy resin is NPEL-128 epoxy resin or 828 epoxy resin;
the rheological additive is prepared from the following components in a mass ratio of 0.5-1: 1-2: 0.5-1 of organobentonite, fumed silica and polyamide wax powder;
wherein: the toughening modified resin is selected from one or more of polypropylene glycol diglycidyl ether and trimethylolpropane triglycidyl ether.
2. The high-solid-content novolac epoxy glass flake anticorrosive paint according to claim 1, characterized in that:
the component A comprises:
30-50 parts of composite novolac epoxy resin, 5-15 parts of toughened modified resin, 8-15 parts of pigment, 10-25 parts of glass flake powder, 5-15 parts of filler, 1-5 parts of rheological additive and 1-10 parts of solvent;
and B component:
70-90 parts of amine curing agent and 10-30 parts of solvent.
3. The high-solid-content novolac epoxy glass flake anticorrosive paint according to claim 1, characterized in that: the pigment is selected from one or more of anatase titanium dioxide and carbon black powder; the glass flake powder is selected from one or more of 80 meshes, 100 meshes, 120 meshes, 150 meshes and 200 meshes; the filler is one or more selected from sericite, precipitated barium sulfate and quartz powder.
4. The high-solid-content novolac epoxy glass flake anticorrosive paint according to claim 1, characterized in that: the solvent of the component A and the component B is selected from one or more of dimethylbenzene, cyclohexanone and n-butanol.
5. The high-solid-content novolac epoxy glass flake anticorrosive paint according to claim 1, characterized in that: the amine curing agent is selected from one or more of modified alicyclic amine and phenolic aldehyde amine.
6. The preparation method of the high-solid-content novolac epoxy glass flake anticorrosive paint disclosed by claim 1 is characterized by comprising the following steps of: the method comprises the following steps:
the preparation method of the component A comprises the following steps:
firstly, uniformly stirring and dispersing the composite novolac epoxy resin, the toughened modified resin and a part of solvent at a high speed to obtain a mixture; secondly, adding a rheological additive into the mixture, uniformly dispersing at a high speed, adding pigment and filler, fully stirring at a high speed, uniformly dispersing, and then putting into a grinder to disperse until the fineness is less than or equal to 40 mu m; after grinding, adding glass flake powder, dispersing uniformly at a high speed, adding the other part of solvent, and stirring uniformly for later use;
the preparation method of the component B comprises the following steps:
adding the amine curing agent and the solvent in a formula amount into a stirring kettle, and uniformly dispersing at a high speed for later use;
the mass ratio of the component A to the component B is 3-15: 1.
7. the preparation method of the high-solid-content novolac epoxy glass flake anticorrosive paint according to claim 6, characterized by comprising the following steps: in the preparation method of the component A, one part of solvent is n-butanol, and the other part of solvent is dimethylbenzene.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110628306A (en) * | 2019-09-27 | 2019-12-31 | 上海海隆赛能新材料有限公司 | High-corrosion-resistance water-based phenolic epoxy coating |
| CN111393946B (en) * | 2020-02-28 | 2022-03-15 | 南京长江涂料有限公司 | Solvent-free epoxy anticorrosive paint with high operation period and preparation method thereof |
| CN111961388A (en) * | 2020-08-04 | 2020-11-20 | 北京红狮科技发展有限公司 | High-solid-content water-resistant non-toxic glass flake anticorrosive paint and preparation method thereof |
| CN113278343B (en) * | 2021-06-09 | 2022-08-19 | 厦门双瑞船舶涂料有限公司 | Temperature-resistant anticorrosive coating and preparation method thereof |
| CN114891438B (en) * | 2022-04-29 | 2023-04-07 | 佛山市珀力玛高新材料有限公司 | Polyether sulfone composite coating applied to glass cooker |
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| CN104087124A (en) * | 2014-07-25 | 2014-10-08 | 厦门双瑞船舶涂料有限公司 | Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof |
| CN106118361A (en) * | 2016-07-01 | 2016-11-16 | 洛阳双瑞防腐工程技术有限公司 | Reservoir walls resistance to little molecular fluid medium anticorrosive paint and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087124A (en) * | 2014-07-25 | 2014-10-08 | 厦门双瑞船舶涂料有限公司 | Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof |
| CN106118361A (en) * | 2016-07-01 | 2016-11-16 | 洛阳双瑞防腐工程技术有限公司 | Reservoir walls resistance to little molecular fluid medium anticorrosive paint and preparation method thereof |
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