CN104087124B - Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof - Google Patents
Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof Download PDFInfo
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- CN104087124B CN104087124B CN201410357117.5A CN201410357117A CN104087124B CN 104087124 B CN104087124 B CN 104087124B CN 201410357117 A CN201410357117 A CN 201410357117A CN 104087124 B CN104087124 B CN 104087124B
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Abstract
The invention discloses phenol aldehyde epoxy paint with chemical medium resistance and a preparation method thereof, and belongs to the paint field. The phenol aldehyde epoxy paint comprises a component A and a component B, wherein the component A consists of the following components in percentage by mass of 20-60% of epoxy resin, 3-20% of phenol aldehyde epoxy functional modifier, 3-15% of reaction type epoxy diluents, 4-25% of solvent, 0.1-1% of anti-foaming agent, 2-10% of rust-proof pigment, 0.1-2% of coupling agent, 0.5-3% of functional thixotropic agent, 25-67% of modifying filler; the component B consists of the following components in percentage by mass of 97-99.5% of amine curing agents, 0-20% of solvent, 0.5-3% of coupling agent. Mass solids of the phenol aldehyde epoxy paint disclosed by the invention are over 95%, so that solid content is high; moreover, the rust-proof pigment is partly added for being used as rust-proof paint, and therefore, the phenol aldehyde epoxy paint has relatively good fog mist resistance and seawater resistance, satisfies interior-exterior anticorrosive coating, and the like of the conventional ship industry and the chemical plant, has relatively high performance for resisting chemical media such as acid-base, and the like, and particularly has thermal acid-base resistance.
Description
【Technical field】
The invention belongs to paint field, is related to a kind of epoxy novolac coating with chemical mediator-resitant property and its preparation side
Method.
【Background technology】
It is known, the medium of the strong acid/base with uniform temperature, because corrosive environment is very harsh, common epoxy is applied
Material often cannot be tolerated, the phenomenon such as coating is susceptible to bubble in shorter service phase, comes off, and affect anticorrosion ability, contracting
The service life of the equipment such as short storage tank, pipeline, at present for a series of strong corrosive mediums such as storage, transport, contact strong acid, highly basic
Coating, protected using the higher novolac epoxy resin of crosslink density.
Recent SY/T 0319-2012《Anticorrosive coat technical standard in steel storage tank liquid coating》After issuing and implementation, to liquid
Acidproof/alkali the performance indications of epoxy novolac coating are further improved, wherein to resistant to chemical media (10% sulfuric acid, 10%
NaOH) temperature brought up to 60 DEG C, while also proposing a series of requirement to heat resisting and pressure resisting；Current biography on the market
System epoxy novolac coating uses mono-functional reactive's diluent and does not add epoxy novolac modifying agent, properties of product mostly
Rigors of the standard to epoxy novolac coating cannot have been met, therefore, select a kind of phenol with chemical mediator-resitant property
Aldehyde epoxy coating becomes most important.
【The content of the invention】
In in order to overcome the shortcomings of background technology, the invention discloses a kind of epoxy novolac with chemical mediator-resitant property
Coating and preparation method thereof, realizes chemical mediator-resitant property by force, and solid content is high, the high purpose of combination property.
In order to realize the purpose of foregoing invention, the present invention is adopted the following technical scheme that：
A kind of epoxy novolac coating with chemical mediator-resitant property, including first component and second component, by weight percent
Consisting of：
The mass percent of first component：
The mass percent of second component：Amine curing agent 97-99.5%；
Solvent 0-20%；
Coupling agent 0.5-3%.
The described epoxy novolac coating with chemical mediator-resitant property, the epoxy resin in the first component adopts pure phenol
Formaldehyde epoxy resin, it is also possible to bisphenol A epoxide resin compounding, when pure novolac epoxy resin and bisphenol A epoxide resin are compounded, institute
Content of the pure novolac epoxy resin stated in epoxy-resin systems is 30%～100%, and described bisphenol A epoxide resin is in ring
Content in epoxy resin system is 70%～0, and described pure novolac epoxy resin is phenol type novolac epoxy resin, orthoresol type
Any one or more in novolac epoxy resin or bisphenol A-type novolac epoxy resin, wherein it is preferred that epoxide number be 0.48～
0.72 pure novolac epoxy resin.
The described epoxy novolac coating with chemical mediator-resitant property, epoxy novolac functional modifier in the first component
For thermoplastic resin, described thermoplastic resin is in acrylic resin, chlorinated rubber resin, coumarone indene resin or Petropols
Any one, wherein it is preferred that Petropols, its mean molecule quantity is between 200-6000.
The described epoxy novolac coating with chemical mediator-resitant property, response type epoxide diluent is in the first component
Any one in the glycidol ethers compound of bis-epoxy functional group or the reactive diluent of trifunctional, preferably three wood collection
Group's SM-80 di-functional reactive's diluents.
The described epoxy novolac coating with chemical mediator-resitant property, rust resisting pigment is mainly market in the first component
Upper common rust resisting pigment.
The described epoxy novolac coating with chemical mediator-resitant property, the coupling agent choosing in the first component and second component
One or more from silane coupler, is preferable over gamma-aminopropyl-triethoxy-silane, γ-(2,3- glycidoxy) third
One or more in base trimethoxy silane, γ-propyl methacrylate base trimethoxy silane.
The described epoxy novolac coating with chemical mediator-resitant property, function thixotropic agent is organic bentonite in the first component
Profit soil, polyamide are cured, aerosil mixture, and ratio is 1：(0.1～10)：(0.1～10).
The described epoxy novolac coating with chemical mediator-resitant property, the solvent in the first component and second component is two
The interworking solvent of toluene, n-butanol.
The described epoxy novolac coating with chemical mediator-resitant property, the amine curing agent in the second component is selected from waist
Any one or more in shell oil modified phenolic amine, modified fatty amine, aliphatic cyclic amine, aromatic amine, amine value scope is 150-
500mgKOH/g, wherein it is preferred that modified fatty amine curing agent, amine value scope is 200-400mgKOH/g.
A kind of preparation method of the epoxy novolac coating with chemical mediator-resitant property, methods described
Concrete operation step be：
(1) preparation of first component：
A, novolac epoxy resin and modifying agent are proportionally added in container, are uniformly mixed；
B, it is proportionally added into coupling agent, defoamer successively under agitation, is uniformly mixed；
C, then it is proportionally added into modified filler successively under agitation, with homogenizer high-speed stirred 50-100um is reached
Fineness after add function thixotropic agent and solvent；
D, be uniformly dispersed at a high speed after the first component made in the coating；
(2) preparation of second component：
Amine hardener in second component, solvent are mixed and stirred for uniformly, making acid and alkali-resistance coating according to certain ratio
Component B.
Due to adopting above-mentioned technical proposal, the present invention to have the advantages that：
1st, the present invention is by other groups such as epoxy resin, curing agent, epoxy novolac functional modifier and modified filler, auxiliary agent
The screening for dividing reaches synergistic effect with good collocation, can improve the chemical mediator tolerance of epoxy novolac coating, especially
It is the tolerance to soda acid；Soak test result：60 DEG C of 10% sulfuric acid of immersion, 60 DEG C of 10% NaOH, 60 DEG C of 3.5% chlorine
Change sodium 30 days non-foaming；300 days 10% sulfuric acid of immersion, 10% NaOH and 3.5% sodium chloride of normal temperature is non-foaming；Resistance to 7MPa is certainly
Water, 60 days non-foaming, H of resistance to 12MPa2Coating is intact within S30 days, normal temperature 90 days immersion dimethylbenzene, butyl acetate, 200# solvents
Oil is non-foaming, and 180 days immersion crude oil of normal temperature is non-foaming；
2nd, quality solid of the invention point can reach more than 95%, and solid content is high；
3rd, the present invention can be applied not only to the anticorrosion of steel structure of acid and alkali corrosion environment, and addition part rust resisting pigment is
Can use as antirusting paint, with preferable salt spray resistance, sea water resistance energy, traditional shipping industry be met, inside and outside chemical plant
Anticorrosive coating etc.；
4th, using thermoplastic resin as epoxy novolac functional modifier, described thermoplastic resin can be punctured into the present invention
In spatial gaps in the middle of in novolac epoxy resin and amine reactant, the performance with chemical mediators such as higher acid and alkali-resistances, especially
It is the performance of heat-resisting soda acid；
5th, the response type epoxide diluent that adopts of the present invention for bis-epoxy functional group glycidol ethers compound or three
The reactive diluent of functional group, effectively enhances crosslink density；
6th, the modified filler that the present invention is adopted all has good resistance to acids and bases, and it is mainly transition metal oxide, silicon
Hydrochlorate, barium sulfate material, the surface of modified filler is processed using coupling agent, further with higher acid and alkali-resistance etc.
The performance of chemical mediator, the especially performance of heat-resisting soda acid.
【Specific embodiment】
The present invention can be explained in more detail by the following examples, the open purpose of the present invention is intended to the protection present invention
In the range of all changes and improvements, the invention is not limited in the following examples：
The described epoxy novolac coating with chemical mediator-resitant property, including first component and second component, by quality percentage
Number consisting of：
The mass percent of first component：
The mass percent of second component：Amine curing agent 97-99.5%；
Solvent 0-20%；
Coupling agent 0.5-3%.
The described epoxy novolac coating with chemical mediator-resitant property, the epoxy resin in the first component adopts pure phenol
Formaldehyde epoxy resin, it is also possible to bisphenol A epoxide resin compounding, when pure novolac epoxy resin and bisphenol A epoxide resin are compounded, institute
Content of the pure novolac epoxy resin stated in epoxy-resin systems is 30%～100%, and described bisphenol A epoxide resin is in ring
Content in epoxy resin system is 70%～0, and wherein epoxy novolac content is preferably 33%～75%, described pure epoxy novolac
Resin is any one in phenol type novolac epoxy resin, orthoresol type novolac epoxy resin or bisphenol A-type novolac epoxy resin
Plant or various, wherein it is preferred that epoxide number is 0.48～0.72 pure novolac epoxy resin.
The described epoxy novolac coating with chemical mediator-resitant property, epoxy novolac functional modifier in the first component
For thermoplastic resin, described thermoplastic resin is in acrylic resin, chlorinated rubber resin, coumarone indene resin or Petropols
Any one, wherein it is preferred that Petropols, its mean molecule quantity is between 200-6000.
The described epoxy novolac coating with chemical mediator-resitant property, response type epoxide diluent is in the first component
Any one in the glycidol ethers compound of bis-epoxy functional group or the reactive diluent of trifunctional, preferably three wood collection
Group's SM-80 di-functional reactive's diluents.
The described epoxy novolac coating with chemical mediator-resitant property, rust resisting pigment is mainly market in the first component
Upper common rust resisting pigment.
The described epoxy novolac coating with chemical mediator-resitant property, the coupling agent choosing in the first component and second component
One or more from silane coupler, is preferable over gamma-aminopropyl-triethoxy-silane, γ-(2,3- glycidoxy) third
One or more in base trimethoxy silane, γ-propyl methacrylate base trimethoxy silane.
The described epoxy novolac coating with chemical mediator-resitant property, function thixotropic agent is organic bentonite in the first component
Profit soil, polyamide are cured, aerosil mixture, and ratio is 1：(0.1～10)：(0.1～10).
The described epoxy novolac coating with chemical mediator-resitant property, the solvent in the first component and second component is two
The interworking solvent of toluene, n-butanol.
The described epoxy novolac coating with chemical mediator-resitant property, the amine curing agent in the second component is selected from waist
Any one or more in shell oil modified phenolic amine, modified fatty amine, aliphatic cyclic amine, aromatic amine, amine value scope is 150-
500mgKOH/g, wherein it is preferred that modified fatty amine curing agent, amine value scope is 200-400mgKOH/g.
A kind of preparation method of the epoxy novolac coating with chemical mediator-resitant property, the concrete operation step of methods described
For：
(1) preparation of first component：
A, novolac epoxy resin and modifying agent are proportionally added in container, are uniformly mixed；
B, it is proportionally added into coupling agent, defoamer successively under agitation, is uniformly mixed；
C, then it is proportionally added into modified filler successively under agitation, with homogenizer high-speed stirred 50-100um is reached
Fineness after add function thixotropic agent and solvent；
D, be uniformly dispersed at a high speed after the first component made in the coating；
(2) preparation of second component：
Amine hardener in second component, solvent are mixed and stirred for uniformly, making acid and alkali-resistance coating according to certain ratio
Component B；
In use described epoxy novolac coating will be obtained after first component and the mixing of second component.
Embodiment
Composition is illustrated to further describing for the present invention as follows with weight：
The test result of the present invention is as shown in the table, and the visible present invention is compared with embodiment to chemical mediator by comparative example
With good tolerance, especially add after epoxy novolac modifying agent
The embodiment selected herein for the open purpose of the present invention, is presently considered to be suitable, but answers
Solution, it is contemplated that belonging to this design and all changes and the improvement of the embodiment in the scope of the invention including all.
Claims (5)
1. a kind of epoxy novolac coating with chemical mediator-resitant property, is characterized in that：Including first component and second component, by quality
Percentage consisting of：
The mass percent of first component：
The mass percent of second component：
Amine curing agent 97-99.5%；
Solvent 0-20%；
Coupling agent 0.5-3%；
Epoxy resin in the first component adopts pure novolac epoxy resin, it is also possible to compound with bisphenol A epoxide resin, in pure phenol
When formaldehyde epoxy resin and bisphenol A epoxide resin are compounded, the content of described pure novolac epoxy resin in epoxy-resin systems is
30%～100%, the content of described bisphenol A epoxide resin in epoxy-resin systems is 70%～0, described pure phenolic aldehyde ring
Oxygen tree fat is any in phenol type novolac epoxy resin, orthoresol type novolac epoxy resin or bisphenol A-type novolac epoxy resin
One or more；
Wherein response type epoxide diluent for bis-epoxy functional group glycidol ethers compound or trifunctional it is active dilute
Release any one in agent；Function thixotropic agent is organobentonite, polyamide wax, the mixture of aerosil, and ratio is
1：(0.1～10)：(0.1～10)；
Epoxy novolac functional modifier is thermoplastic resin in the first component, described thermoplastic resin be acrylic resin,
Any one in chlorinated rubber resin, coumarone indene resin or Petropols；
The modified filler be transition metal oxide, silicate, barium sulfate material, its surface using coupling agent at
Reason.
2. the epoxy novolac coating with chemical mediator-resitant property according to claim 1, is characterized in that：The first component
With one or more of the coupling agent in second component in silane coupler.
3. the epoxy novolac coating with chemical mediator-resitant property according to claim 1, is characterized in that：The first component
With the interworking solvent that the solvent in second component is dimethylbenzene, n-butanol.
4. the epoxy novolac coating with chemical mediator-resitant property according to claim 1, is characterized in that：The second component
In amine curing agent in cashew nut oil modified phenolic aldehyde amine, modified fatty amine, aliphatic cyclic amine, the aromatic amine any one or it is many
Kind, amine value scope is 150-500mgKOH/g.
5. a kind of preparation method of the epoxy novolac coating with chemical mediator-resitant property as claimed in claim 1, its feature
It is：The concrete operation step of methods described is：
(1) preparation of first component：
A, epoxy resin and epoxy novolac functional modifier are proportionally added in container, are uniformly mixed；
B, it is proportionally added into response type epoxide diluent, coupling agent, defoamer, rust resisting pigment successively under agitation, stirring mixing
Uniformly；
C, then it is proportionally added into modified filler successively under agitation, with homogenizer high-speed stirred the thin of 50-100um is reached
Function thixotropic agent and solvent are added after degree；
D, be uniformly dispersed at a high speed after the first component made in the coating；
(2) preparation of second component：
Coupling agent in second component, amine curing agent, solvent are mixed and stirred for uniformly, making acid and alkali-resistance according to certain ratio
The component B of coating.
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| CN201410357117.5A CN104087124B (en) | 2014-07-25 | 2014-07-25 | Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof |
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| CN201410357117.5A CN104087124B (en) | 2014-07-25 | 2014-07-25 | Phenol aldehyde epoxy paint with chemical medium resistance and preparation method thereof |
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| CN1033982C (en) * | 1990-05-28 | 1997-02-05 | 无锡市化工研究设计院 | Production of transparent solf seal adhesive with epoxy double component |
| CN100467256C (en) * | 2006-04-28 | 2009-03-11 | 华中科技大学 | Method for rapid manufacturing plastic functional piece |
| CN102173654B (en) * | 2011-02-09 | 2013-02-13 | 武汉兴正源路桥复合材料有限公司 | Cold spraying type epoxy thin bridge deck paving material and preparation method thereof |
| CN102816446B (en) * | 2012-08-30 | 2015-03-18 | 广州正邦化工有限公司 | Cold-coating asphalt, and preparation method and construction method thereof |
| CN103275596B (en) * | 2013-03-29 | 2016-06-22 | 厦门双瑞船舶涂料有限公司 | A kind of light color modified epoxy electrostatic conductive anticorrosion paint and preparation method thereof |
| CN104774573B (en) * | 2015-03-30 | 2019-04-23 | 中国电子科技集团公司第三十八研究所 | A kind of high-performance conductive silver paste of containing graphene and preparation method thereof |
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