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CN109306033A - A kind of epoxy acrylate composite emulsion and its preparation method and application - Google Patents

A kind of epoxy acrylate composite emulsion and its preparation method and application Download PDF

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Publication number
CN109306033A
CN109306033A CN201811153042.3A CN201811153042A CN109306033A CN 109306033 A CN109306033 A CN 109306033A CN 201811153042 A CN201811153042 A CN 201811153042A CN 109306033 A CN109306033 A CN 109306033A
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epoxy
composite emulsion
epoxy acrylate
acrylate composite
parts
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Inventor
唐二军
姚蒙蒙
刘少杰
郭晓峰
徐小东
王瑞宏
袁淼
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Hebei University of Science and Technology
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Hebei University of Science and Technology
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Priority to CN201811153042.3A priority Critical patent/CN109306033A/en
Publication of CN109306033A publication Critical patent/CN109306033A/en
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10Esters
    • C08F220/12Esters of monohydric alcohols or phenols
    • C08F220/14Methyl esters, e.g. methyl (meth)acrylate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D133/00Coating 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
    • C09D133/04Homopolymers or copolymers of esters
    • C09D133/06Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/10Homopolymers or copolymers of methacrylic acid esters
    • C09D133/12Homopolymers or copolymers of methyl methacrylate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Paints Or Removers (AREA)

Abstract

本发明提供了一种环氧丙烯酸酯复合乳液及其制备方法和应用,属于水性涂料技术领域。本发明提供的环氧丙烯酸酯复合乳液由包括以下质量份数的原料制备得到:乙烯基类单体20~30份;环氧树脂10~25份;磷酸酯乳化剂1.5~3份;甲基丙烯酸十八烷基酯0.5~1份;引发剂0.2~0.5份;缓冲剂0.2~0.5份;水50~80份。本发明提供的环氧丙烯酸酯复合乳液采用细乳液聚合工艺,使复合乳液中环氧树脂含量较高,增强涂层的附着力和防腐性能,另外,磷酸酯乳化剂不仅可以乳化稳定单体,且在成膜过程中可与金属离子发生络合作用,形成一层致密的磷酸盐保护膜,从而克服了传统乳化剂对乳液涂层性能的影响。The invention provides an epoxy acrylate composite emulsion and a preparation method and application thereof, belonging to the technical field of water-based coatings. The epoxy acrylate composite emulsion provided by the present invention is prepared from the following raw materials in parts by mass: 20-30 parts of vinyl monomers; 10-25 parts of epoxy resin; 1.5-3 parts of phosphate emulsifier; 0.5-1 part of octadecyl acrylate; 0.2-0.5 part of initiator; 0.2-0.5 part of buffer; 50-80 parts of water. The epoxy acrylate composite emulsion provided by the invention adopts a mini-emulsion polymerization process, so that the epoxy resin content in the composite emulsion is higher, and the adhesion and anti-corrosion performance of the coating are enhanced. In addition, the phosphate emulsifier can not only emulsify and stabilize the monomer, And in the process of film formation, it can complex with metal ions to form a dense phosphate protective film, thereby overcoming the influence of traditional emulsifiers on the performance of emulsion coatings.

Description

A kind of Epoxy-Acrylate Hybrid Emulsion and its preparation method and application
Technical field
The present invention relates to technical field of aqueous paint, in particular to a kind of Epoxy-Acrylate Hybrid Emulsion and its preparation side Method and application.
Background technique
Water paint has a vast market development prospect based on its compatibility and protectiveness to environment.Currently, exploitation The water paint of application mainly includes with waterborne acrylic paint, aqueous epoxy resins, waterborne polyurethane resin etc. and its changing Property polymer be base-material coating variety.However, single variety water paint can't be with solvent based coating in certain performances It contends with, to limit its popularization and application, therefore researchs and develops Compound waterborne coating, by the mutual supplement with each other's advantages between resin, The integrated application performance for improving coating material, is the important directions of water paint future development.
Epoxy resin and acrylic resin are all important one of synthetic resin.Epoxy resin has unique epoxy Base, hydroxyl, ehter bond isoreactivity group have excellent adhesive force, impermeability and chemical-resistant, but its coating after curing of coating More crisp, ultra-violet resistance and outdoor weathe resistance are poor.And acrylate has good weatherability, protects light colour retention, so And its coating is also easy to produce hot sticky cold crisp phenomenon.Therefore, above two resin is organically combined, by between each component Have complementary advantages to improve the overall performance of coating, becomes the main hot spot that scholars study.
Currently, the preparation method of Epoxy-Acrylate Hybrid Emulsion has physical blending process, esterification process and emulsion graft copolymerization Method.Physical blending process is to mix epoxy resin and emulsifier, is diluted with water to obtain epoxy emulsion, then by epoxy resin latex with It is mixed containing the acrylic resin of carboxyl and tertiary amine, epoxy acrylate compound aqueous dispersion system, such as United States Patent (USP) is prepared US4,247,439 etc..Between this method preparation process is simple, but there are storage stability differences component the problems such as poor compatibility.Ester Change method has main steps that first is that mixed solvent carries out semi-loop reaction with n-butanol and propylene glycol monomethyl ether, then by poly- with acrylic acid It closes object progress esterification and obtains soluble epoxide acrylate, such as Chinese patent CN102432773A, CN102042738A, beauty State's patent US4,247,439, US2,068,967 etc..Although the technique can improve compatibility between the two resin, these chemistry Reaction carries out in organic solvent, and organic solvent is inflammable and explosive, to production and construction band inconvenience.In addition, epoxy group Consumption, influence the final crosslink density of coating.Emulsion graft copolymerization method is the skeleton that hydrophilic radical is introduced into epoxy resin In, then using double bond as reflecting point, using semi-continuous seed emulsion polymerization method, copolymerization, synthesis are carried out with other monomers Waterborne epoxy acrylate-grafted composite emulsion, such as Chinese patent CN102964536A, United States Patent (USP) US4,212,781, US4, 578,888 etc..This method grafting rate is lower, and reaction controllability is poor, due to the hydrophobicity of epoxy resin, the multiple emulsion of preparation Middle epoxy content is lower.Separately there is Chinese patent CN105732881A to report a kind of acrylate composite emulsion, by epoxy resin It is dissolved in vinyl monomer, by high pressure homogenizer, high-shear homogenizing machine, emulsification grinder, lobed rotor pump, recirculation type cream After change machine, vacuum homogeneous emulsifying machine emulsification, causes thin polymerization reaction, obtain waterborne epoxy acrylate multiple emulsion.The technique Although ensure that most of epoxy group is retained in lotion, the presence of conventional emulsifier and assistant for emulsifying agent was forming a film Cheng Zhonghui dissociates to coating surface, causes film adhesive reduction, poor water resistance, coating whiting, antiseptic property difference etc., influences to apply Layer performance.
Summary of the invention
In view of this, it is an object of that present invention to provide a kind of Epoxy-Acrylate Hybrid Emulsion and preparation method thereof and answering With Epoxy-Acrylate Hybrid Emulsion provided by the invention can not only improve the content of epoxy resin, also overcome traditional cream Influence of the agent to emulsion coating performance.
The present invention provides a kind of Epoxy-Acrylate Hybrid Emulsions, are prepared by the raw material for including following mass fraction It arrives:
Preferably, the vinyl monomer is styrene, methyl methacrylate, butyl acrylate, methacrylic acid Two or more mixture in butyl ester and isooctyl methacrylate.
Preferably, the epoxy resin is in bisphenol A-type E-42 epoxy resin, E-44 epoxy resin and E-51 epoxy resin It is one or more.
Preferably, the phosphate emulsifier is alkyl acrylate phosphate and/or siloxanes phosphate.
Preferably, the initiator is potassium peroxydisulfate or ammonium persulfate.
Preferably, the buffer is that phosphoric acid hydrogen is received or phosphoric acid hydrogen two is received.
The present invention also provides the preparation methods of above-mentioned Epoxy-Acrylate Hybrid Emulsion, including following preparation step:
1) the phosphate emulsifier of the mass fraction is mixed with 40~60 parts of water, obtains emulsifier aqueous solution;By institute The water mixing for stating the initiator, buffer and remainder of mass fraction, obtains initiator solution;By the mass fraction Epoxy resin, octadecyl methacrylate and vinyl monomer mixing, obtain monomer mixed solution;
2) monomer mixed solution in the step 1) is mixed with emulsifier aqueous solution, successively stirring and ultrasonication are thin Change, obtains miniemulsion;
3) miniemulsion that the initiator solution in the step 1) is added dropwise in the step 2) is mixed and is polymerize Reaction, obtains Epoxy-Acrylate Hybrid Emulsion.
Preferably, the rate stirred in the step 2) is 700~900r/min.
Preferably, ultrasonication described in the step 2) refinement frequency be ultrasound stop within 5 seconds 5 seconds, power be 650~ 950W, total sonication time are 15~20min.
Preferably, the temperature of polymerization reaction is 75~85 DEG C in the step 3), time of the polymerization reaction is 4~ 6h。
The present invention also provides the preparations that above-mentioned Epoxy-Acrylate Hybrid Emulsion is used for metallic paint.
Advantageous effects: the present invention provides a kind of Epoxy-Acrylate Hybrid Emulsion, epoxy third provided by the invention Olefin(e) acid ester composite emulsion is by including that the raw material of following mass fraction is prepared: vinyl monomer 20~30;Part epoxy resin 15~25 parts;1.5~3 parts of phosphate emulsifier;0.5~1 part of octadecyl methacrylate;0.2~0.5 part of initiator; 0.2~0.5 part of buffer;50~80 parts of water.It can be improved asphalt mixtures modified by epoxy resin in Epoxy-Acrylate Hybrid Emulsion provided by the invention The content of rouge improves the adhesive force and antiseptic property of coating, in addition, emulsifier used in multiple emulsion is phosphate emulsifier, it should Emulsifier not only can be with stable emulsifying monomer, but also multiple emulsion of the invention is prepared metallic paint and is used for metal surface, phosphoric acid With metal ion complexing can occur for ester emulsifier in film forming procedure, form one layer of fine and close phosphate coating, thus Overcome influence of the conventional emulsifier to emulsion coating performance.In addition the first of Epoxy-Acrylate Hybrid Emulsion provided by the invention Base octadecyl acrylate can play the role of assistant for emulsifying agent, make the monomer emulsions obtained by refinement in the course of the polymerization process It keeps stablizing.
The present invention also provides the preparation method of Epoxy-Acrylate Hybrid Emulsion, the present invention is by the phosphorus of the mass fraction Acid esters emulsifier is mixed with 40~60 parts of water, obtains emulsifier aqueous solution;By the initiator of the mass fraction, buffer and remain The water mixing of remaining part point, obtains initiator solution;By the epoxy resin of the mass fraction, octadecyl methacrylate It is mixed with vinyl monomer, obtains monomer mixed solution;The monomer mixed solution is mixed with emulsifier aqueous solution, is successively stirred It is refined with ultrasonication, obtains miniemulsion;The initiator solution and the miniemulsion are mixed and carry out polymerization reaction, is obtained Epoxy-Acrylate Hybrid Emulsion.The method that the present invention uses mini-emulsion polymerization, does not require migration of the monomer in water phase, directly Cause polymerization in monomer droplet, the content of epoxy resin in multiple emulsion can not only be improved, also retain most ring Oxygen groups guarantee degree of cross linking when film forming;And almost all of monomer droplet causes polymerization simultaneously, and obtained latex particle is flat Equal partial size is small, and particle diameter distribution is uniform.
Specific embodiment
The present invention provides a kind of Epoxy-Acrylate Hybrid Emulsions, are prepared by the raw material for including following mass fraction It arrives:
In the present invention, according to parts by weight, the raw material for preparing the Epoxy-Acrylate Hybrid Emulsion includes vinyl 20~30 parts of class monomer, more preferably 25 parts.In the present invention, the vinyl monomer is preferably styrene, metering system Two or more mixture in sour methyl esters, butyl acrylate, butyl methacrylate and isooctyl methacrylate. The present invention is not particularly limited the amount ratio of the mixture medium vinyl monomer, is mixed with arbitrary proportion.
In the present invention, on the basis of the parts by weight of the vinyl monomer, the epoxy acrylate Composite Milk The raw material of liquid includes 15~25 parts of epoxy resin, more preferably 18~20 parts;In the present invention, the epoxy resin is bisphenol-A One of type E-42 epoxy resin, E-44 epoxy resin and E-51 epoxy resin are a variety of.
In the present invention, on the basis of the parts by weight of the vinyl monomer, the epoxy acrylate Composite Milk 1.5~3 parts of the phosphoric acid ester emulsifier of liquid;In the present invention, the phosphate emulsifier is preferably alkyl acrylic Ester phosphate and/or siloxanes phosphate;In the present invention, when the phosphate emulsifier be alkyl acrylate phosphate and When siloxanes phosphate, the present invention is not particularly limited the mass ratio of alkyl acrylate phosphate and siloxanes phosphate, It is mixed with arbitrary proportion.In the present invention, the phosphate emulsifier not only can with stable emulsifying vinyl monomer, but also Complexing occurs with metal ion in film forming procedure, one layer of fine and close phosphate coating is formed, to overcome tradition Influence of the emulsifier to emulsion coating performance.
In the present invention, on the basis of the parts by weight of the vinyl monomer, the epoxy acrylate Composite Milk The raw material of liquid includes 0.5~1 part of octadecyl methacrylate.In the present invention, the octadecyl methacrylate It can play the role of assistant for emulsifying agent, the monomer emulsions obtained by fine crankshaft is made to keep stable in the course of the polymerization process.
In the present invention, on the basis of the parts by weight of the vinyl monomer, the epoxy acrylate Composite Milk The raw material of liquid includes 0.2~0.5 part of initiator, more preferably 0.3~0.4 part;In the present invention, the initiator is preferably sulphur Sour potassium and/or ammonium persulfate.
In the present invention, on the basis of the parts by weight of the vinyl monomer, the epoxy acrylate Composite Milk The raw material of liquid includes 0.2~0.5 part of buffer;In the present invention, the buffer is preferably that phosphoric acid hydrogen is received and/or phosphoric acid hydrogen two It receives.
The present invention also provides the preparation methods of above-mentioned Epoxy-Acrylate Hybrid Emulsion, including following preparation step:
1) the phosphate emulsifier of the mass fraction is mixed with 40~60 parts of water, obtains emulsifier aqueous solution;By institute The water mixing for stating the initiator, buffer and remainder of mass fraction, obtains initiator solution;By the mass fraction Epoxy resin, octadecyl methacrylate and vinyl monomer mixing, obtain monomer mixed solution;
2) monomer mixed solution in the step 1) is mixed with emulsifier aqueous solution, successively stirring and ultrasonication are thin Change, obtains miniemulsion;
3) miniemulsion that the initiator solution in the step 1) is added dropwise in the step 2) is mixed and is polymerize Reaction, obtains Epoxy-Acrylate Hybrid Emulsion.
The present invention mixes the phosphate emulsifier of the mass fraction with 40~60 parts of water, obtains emulsifier aqueous solution; The water of the initiator of the mass fraction, buffer and remainder is mixed, initiator solution is obtained;By the mass parts Several epoxy resin, octadecyl methacrylate and vinyl monomer mixing, obtains monomer mixed solution.The present invention is to institute The method for stating mixing is not particularly limited, and selects those skilled in the art known ground mixed method.
After obtaining emulsifier aqueous solution, initiator solution and monomer mixed solution, the present invention is by monomer mixed solution and emulsifies The mixing of agent aqueous solution, successively stirring and ultrasonication refinement, obtain miniemulsion.
In the present invention, the rate of the stirring is preferably 700~900r/min, more preferably 750~850r/min, Most preferably 800r/min.
In the present invention, the frequency of the ultrasonication refinement is preferably that ultrasound is stopped 5 seconds for 5 seconds;The ultrasonication refinement Power be preferably 650~950W, more preferably 700~900W, most preferably 800~850W;The ultrasonication refinement Time is preferably 15~20min.Present invention preferably uses ultrasonic cell disruptors to carry out ultrasonication refinement.The present invention passes through The partial size of Fine by Ultrasonic reduction miniemulsion.
In the present invention, the concrete mode that the monomer mixed solution is mixed with emulsifier aqueous solution preferably mixes monomer Drop is added in emulsifier aqueous solution.In the present invention, the time for adding is preferably 5~10min.
After obtaining miniemulsion, the initiator solution and the miniemulsion are mixed and carry out polymerization reaction by the present invention, are obtained To Epoxy-Acrylate Hybrid Emulsion.
In the present invention, the temperature of the polymerization reaction is preferably 75~85 DEG C, and more preferably 80 DEG C;The polymerization reaction Time be preferably 4~6h, more preferably 5~5.5h.In the present invention, almost in all monomers in the slender lotion Drop causes polymerization simultaneously, therefore obtained latex particle average grain diameter is small, and particle diameter distribution is uniform.
In the present invention, the initiator solution and the method for miniemulsion mixing are preferably by initiator solution It is added drop-wise in miniemulsion.In the present invention, the time for adding is 2.0~3.0h.
In the present invention, the polymerization reaction preferably carries out under anaerobic.The present invention preferably passes through nitrogen and provides nothing Oxygen environment.
In the present invention, after the polymerization reaction, include successively also heat preservation, be cooled to room temperature and filter.
In the present invention, the time of the heat preservation is preferably 2.0~3.0h, more preferably 2.5h.
The present invention is not particularly limited the method for filtering, selects method well known to those skilled in the art.
The present invention also provides the preparations that above-mentioned Epoxy-Acrylate Hybrid Emulsion is used for metallic paint.
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention Content is not limited solely to the following examples.
Embodiment 1
1) by mass parts) in terms of part, 50 parts of deionized waters are taken, by 2 parts of phosphates (alkyl acrylate phosphate) emulsifier It is dissolved in and emulsifier aqueous solution is wherein made;0.4 part of potassium peroxydisulfate and 0.4 disodium hydrogen phosphate are dissolved in 10 parts of water, initiation is made Agent aqueous solution;Successively take 10 parts of E-44 epoxy resin, 2 parts of octadecyl methacrylates, 18 parts of methyl methacrylates, 12 Part butyl acrylate, is made monomer mixed solution after mixing.
2) monomer mixed solution prepared by step 1) is added dropwise in the emulsifier aqueous solution prepared in step 1), with 700r/ After the rate stirring 30min of min, (600W ultrasound 20min) then is refined with ultrasonic cell disruptor, forms stable thin cream Liquid.
3) miniemulsion prepared in step 2) is added at one time in four-hole bottle, leads to nitrogen displacement, is warming up to 75 DEG C, so A dropping step 1 afterwards) in initiator solution, react 3h after, keep the temperature 2h, be down to room temperature, filtering and discharging obtains epoxy acrylic Ester composite emulsion.
Embodiment 2
Be added in embodiment 1 10 parts of E-44 epoxy resin are replaced with into 15 parts of E-44, other are same as Example 1.
Embodiment 3
Be added in embodiment 1 10 parts of E-44 epoxy resin are replaced with into 20 parts of E-44, other are same as Example 1.
Embodiment 4
Be added in embodiment 1 10 parts of E-44 epoxy resin are replaced with into 25 parts of E-44, other are same as Example 1.
Embodiment 5
Be added in embodiment 12 parts of phosphate emulsifiers are replaced with into 1.5 parts of phosphate emulsifiers, other and embodiment 1 It is identical.
Embodiment 6
Be added in embodiment 12 parts of phosphate emulsifiers are replaced with into 1 part of phosphate emulsifier, other and 1 phase of embodiment Together.
Comparative example 1
Be added in embodiment 12 parts of phosphate emulsifiers are replaced with into 0.5 part of nonylphenol polyoxyethylene ether and 1.5 parts of alkene Propoxyl group nonyl phenol propyl alcohol polyoxyethylene ether ammonium sulfate emulsifier, other are same as Example 1.
By epoxy acrylate Composite Milk prepared by embodiment 1, embodiment 2, embodiment 3, embodiment 4 and comparative example 1 Liquid passes through the corrosion-resistant of polarization curve test evaluation coating by national standard test film water absorption rate, partial size and particle diameter distribution Performance, treated, and data see the table below:
The spreading property of Epoxy-Acrylate Hybrid Emulsion obtained in 1 Examples 1 to 6 of table and comparative example 1
E in tablecorrFor corrosion potential;IcorrFor corrosion current;RpFor polarization resistance;PE% is protection efficiency
The method of the present embodiment 1 substitutes the nonylphenol polyoxyethylene ether of Compositional type using phosphate emulsifier as shown in Table 1 With allyloxy nonyl phenol propyl alcohol polyoxyethylene ether ammonium sulfate emulsifier, prepared waterborne epoxy acrylate multiple emulsion is applied Layer corrosion electric current density small an order of magnitude, the protection efficiency of coating are increased to 93.5% from 70.4%, have preferable anti- Rotten performance.And with the increase of epoxy resin content, the corrosion potential of coating is stepped up, corrosion electric current density gradually under Drop, illustrates coating antiseptic performance enhancement.The waterborne epoxy acrylate multiple emulsion partial size of Examples 1 to 4 preparation, particle diameter distribution Comparative example is significantly lower than with the water absorption rate of film.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (10)

1.一种环氧丙烯酸酯复合乳液,由包括以下质量份数的原料制备得到:1. an epoxy acrylate composite emulsion, prepared by the raw material comprising the following parts by mass: 2.根据权利要求1所述的环氧丙烯酸酯复合乳液,其特征在于,所述乙烯基类单体为苯乙烯、甲基丙烯酸甲酯、丙烯酸丁酯、甲基丙烯酸丁酯和甲基丙烯酸异辛酯中的两种或两种以上的混合物。2. epoxy acrylate composite emulsion according to claim 1, is characterized in that, described vinyl monomer is styrene, methyl methacrylate, butyl acrylate, butyl methacrylate and methacrylic acid A mixture of two or more of isooctyl esters. 3.根据权利要求1所述的环氧丙烯酸酯复合乳液,其特征在于,所述环氧树脂为双酚A型E-42环氧树脂、E-44环氧树脂和E-51环氧树脂中的一种或几种。3. epoxy acrylate composite emulsion according to claim 1, is characterized in that, described epoxy resin is bisphenol A type E-42 epoxy resin, E-44 epoxy resin and E-51 epoxy resin one or more of them. 4.根据权利要求1所述的环氧丙烯酸酯复合乳液,其特征在于,所述磷酸酯乳化剂为烷基丙烯酸酯磷酸酯和/或硅氧烷磷酸酯。4. The epoxy acrylate composite emulsion according to claim 1, wherein the phosphate emulsifier is an alkyl acrylate phosphate and/or a siloxane phosphate. 5.根据权利要求1所述的环氧丙烯酸酯复合乳液,其特征在于,所述引发剂为过硫酸钾和/或过硫酸铵。5. The epoxy acrylate composite emulsion according to claim 1, wherein the initiator is potassium persulfate and/or ammonium persulfate. 6.根据权利要求1所述的环氧丙烯酸酯复合乳液,其特征在于,所述缓冲剂为磷酸氢纳和/或磷酸氢二纳。6. The epoxy acrylate composite emulsion according to claim 1, wherein the buffer is sodium hydrogen phosphate and/or sodium hydrogen phosphate. 7.权利要求1~6任意一项所述的环氧丙烯酸酯复合乳液的制备方法,其特征在于,包括以下制备步骤:7. The preparation method of the epoxy acrylate composite emulsion according to any one of claims 1 to 6, characterized in that, comprising the following preparation steps: 1)将所述质量份数的磷酸酯乳化剂与40~60份水混合,得到乳化剂水溶液;将所述质量份数的引发剂、缓冲剂和剩余部分的水混合,得到引发剂水溶液;将所述质量份数的环氧树脂、甲基丙烯酸十八烷基酯和乙烯基类单体混合,得到单体混合液;1) mixing the phosphate emulsifier of the mass fraction with 40~60 parts of water to obtain an aqueous emulsifier solution; mixing the initiator, the buffer and the remainder of the water in the mass fraction to obtain an aqueous initiator solution; Mixing the epoxy resin, octadecyl methacrylate and vinyl monomers of the mass fractions to obtain a monomer mixture; 2)将所述步骤1)中的单体混合液与乳化剂水溶液混合,依次搅拌和超声破碎细化,得到细乳液;2) mixing the monomer mixture in the step 1) with the aqueous emulsifier solution, stirring and ultrasonically crushing and refining in turn to obtain a mini-emulsion; 3)将所述步骤1)中的引发剂水溶液滴加入所述步骤2)中的细乳液中进行聚合反应,得到环氧丙烯酸酯复合乳液。3) The initiator aqueous solution in the step 1) is added dropwise to the mini-emulsion in the step 2) to carry out a polymerization reaction to obtain an epoxy acrylate composite emulsion. 8.根据权利要求7所述的制备方法,其特征在于,所述步骤2)中搅拌的速率为700~900r/min;超声破碎细化的频率为超声5秒停5秒,功率为650~950W,总超声时间为15~20min。8. The preparation method according to claim 7, wherein the stirring rate in the step 2) is 700~900r/min; the frequency of ultrasonic crushing and refining is that the ultrasonic wave stops for 5 seconds for 5 seconds, and the power is 650~900 r/min. 950W, the total ultrasonic time is 15-20min. 9.根据权利要求7所述的制备方法,其特征在于,所述步骤3)中聚合反应的温度为75~85℃,所述聚合反应的时间为4~6h。9 . The preparation method according to claim 7 , wherein the temperature of the polymerization reaction in the step 3) is 75-85° C., and the time of the polymerization reaction is 4-6 h. 10 . 10.权利要求1~6任意一项所述的环氧丙烯酸酯复合乳液或权利要求7~9任意一项所述的方法制备得到的环氧丙烯酸酯复合乳液用于金属漆的制备。10. The epoxy acrylate composite emulsion according to any one of claims 1 to 6 or the epoxy acrylate composite emulsion prepared by the method according to any one of claims 7 to 9 is used for the preparation of metallic paint.
CN201811153042.3A 2018-09-30 2018-09-30 A kind of epoxy acrylate composite emulsion and its preparation method and application Pending CN109306033A (en)

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Application publication date: 20190205