CN110358003A - A kind of aqueous acrylic emulsion and preparation method thereof for sealant - Google Patents
A kind of aqueous acrylic emulsion and preparation method thereof for sealant Download PDFInfo
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- CN110358003A CN110358003A CN201910667657.6A CN201910667657A CN110358003A CN 110358003 A CN110358003 A CN 110358003A CN 201910667657 A CN201910667657 A CN 201910667657A CN 110358003 A CN110358003 A CN 110358003A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers 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
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers 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
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives 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; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—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
- C09J133/062—Copolymers with monomers not covered by C09J133/06
- C09J133/068—Copolymers with monomers not covered by C09J133/06 containing glycidyl groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers 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
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
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- Health & Medical Sciences (AREA)
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- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The aqueous acrylic emulsion and preparation method thereof that the invention discloses a kind of for sealant, its raw material parts by weights ratio includes: 0.5-2 parts of emulsifier, 0.05-0.3 parts of sodium bicarbonate, 8-15 parts and deionized water 40-60 parts of initiator, 8-15 parts and neutralizer 0.2-0.8 parts of mix monomer, the raw material of the mix monomer includes: 10-20 parts of acrylate monomer by weight, 20-30 parts of methacrylate monomers, 1-4 parts of acrylic monomers, 0.5-4 parts of functional acrylic monomer containing epoxy group and 5-10 parts of maleic acid diester, the present invention relates to water-based emulsion technical fields.This is used for the aqueous acrylic emulsion and preparation method thereof of sealant, the angle from synthesis technology can be achieved, adjust the aqueous acrylic emulsion of different structure, different molecular weight and different glass temperature, high-performance water-based sealant is prepared, the aqueous sealant that the aqueous acrylic emulsion and pigments and fillers, dispersing agent and reinforcing agent are mixed with has and substrate high adhesion force, superior flexibility and excellent chemical resistance.
Description
Technical field
The present invention relates to water-based emulsion technical field, specially a kind of aqueous acrylic emulsion and its system for sealant
Preparation Method.
Background technique
Sealant usually using the stemness such as petrochemical industry derivative, natural rubber or synthetic rubber or semi-drying dope as base-material,
It is aided with filler, auxiliary agent etc. to be prepared, is widely used in the sealing of the components such as building, automobile, electronics, however, close at present
Sealing is still based on silicone adhesive, and accounting reaches 60%, and especially in the majority with glass cement, polyvinyl formal is in base-material composition
107 glue contain higher content of formaldehyde, with the improvement of people's environmental awareness, environmental regulation is to organic volatile in sealant
(VOC) limitation of content is more and more tighter, and the sealant product of low VOC even Diamond Search is increasingly subject to market favor.
Currently, low VOC even Diamond Search sealant is based primarily upon both direction: first, silane modified polyether glue i.e. MS glue,
With the network structure that flexible polyether long-chain is connected, this system not only has excellent weatherability, water resistance, ageing-resistant and resistance to
Long performance, and can effectively inhibit and avoid the generation of sealant rear surface crackle by long-term use.Chinese patent
CN106634770A discloses a kind of transparent type one-component silane modified polyether seal glue and preparation method thereof, with organic-silicon-modified
Polyethers is base-material, introduce silane coupling agent be cross-linking system prepare the MS glue with excellent properties, however, its it is expensive and
Preparation process is complicated, is unable to satisfy generalization application.
Another developing direction is the Water-borne modification of sealant, the increasingly extensive concern of people.Aqueous sealant is usually with aqueous
Base-material based on polymer, including styrene-acrylic emulsion, pure-acrylic emulsion and silicone acrylic emulsion etc., Chinese patent CN109468095A are disclosed
A kind of aqueous sealant and preparation method thereof of potent waterproof is aided with poly- third by base-material based on AA emulsion
Alkene nitrile fiber prepares the aqueous sealant of potent waterproof as reinforcing material, and Chinese patent CN101967256A discloses one
Kind environment-friendly container aqueous sealant, is base-material by acetic acid-ethylene copolymer emulsion, prepares a kind of low VOC content
Environment-friendly type aqueous sealant, although these patents relate to water-based emulsion as the application in terms of sealant, however, from main body
In terms of synthetic technology of resins, prepares aqueous sealant and have not been reported.
Summary of the invention
(1) the technical issues of solving
The object of the present invention is to overcome the problems of the prior art, provides a kind of realization aqueous acrylic emulsion glass
Change temperature easily to adjust, make a variety of acrylic emulsions and filler, additive compatibility of different structure, different molecular weight, forms high-performance
The preparation method of aqueous sealant.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of aqueous third for sealant
Olefin(e) acid lotion, raw material parts by weights ratio include: 0.5-2 parts of emulsifier, 0.05-0.3 parts of sodium bicarbonate, 8-15 parts of initiator and
40-60 parts of deionized water, 8-15 parts of mix monomer and 0.2-0.8 parts of neutralizer, the raw material of the mix monomer is by weight
Include: 10-20 parts of acrylate monomer, 20-30 parts of methacrylate monomers, 1-4 parts of acrylic monomers, containing epoxy group
0.5-4 parts of functional acrylic monomer and 5-10 parts of maleic acid diester.
Preferably, the acrylate monomer be one of methyl acrylate, ethyl acrylate or butyl acrylate or
A variety of combinations, and methacrylate monomers are methyl methacrylate, propyl methacrylate or butyl methacrylate
One of or a variety of combinations.
Preferably, the acrylic monomers is the combination of one or both of acrylic or methacrylic acid, and contains ring
The functional acrylic monomer of oxygen groups is one or both of glycidyl methacrylate or glycidyl acrylate
Combination.
Preferably, the maleic acid diester is dimethyl maleate, diethyl maleate, dipropyl maleate or maleic acid
One of dibutyl ester or a variety of combinations, and emulsifier is alkyl phenol polyoxyethylene ether OP series, ADEKA REASOAP
The nonionic emulsifier such as ER-30, SR-10, fatty alcohol polyoxyethylene ether ammonium sulfate, dodecyl sodium sulfate or detergent alkylate
One of sodium sulfonate anionic emulsifier or a variety of combinations.
Preferably, the initiator is one of sodium peroxydisulfate, potassium peroxydisulfate or ammonium persulfate or a variety of combinations, and
Neutralizer is ammonium hydroxide, triethylamine or N, one of N- dimethylethanolamine or a variety of combinations.
The invention also discloses a kind of preparation methods of aqueous acrylic emulsion for sealant, specifically include following step
It is rapid:
The preparation of S1, mix monomer: first based on mass fraction, weighed respectively by weighing equipment acrylate monomer,
Methacrylate monomers, acrylic monomers, the functional acrylic monomer containing epoxy group and maleic acid diester are mixed equal
It is even that prepare mix monomer spare；
The preparation of S2, aqueous acrylic emulsion: based on mass fraction, by emulsifier, sodium bicarbonate, initiator and deionization
Water is added in reaction kettle, is warming up to 75-85 DEG C, the mix monomer that then a dropping step S1 is prepared in 15-40 minutes, surely
Determine 5-20min, remaining mix monomer and initiator are added dropwise to complete in 3-4h, be warming up to 80-85 DEG C of curing 1-2h, cools down
To 40-60 DEG C, neutralizer is added later and neutralizes, cooling discharge obtains aqueous acrylic emulsion after keeping the temperature 20-40min.
Preferably, the solid content of the aqueous acrylic emulsion is 35-55%, and viscosity is 1000-5000cP, lotion grain
Diameter is 90-250nm, and glass transition temperature is -20-20 DEG C.
Preferably, the aqueous acrylic emulsion in the application in sealant field the following steps are included: based on mass fraction,
By 30-40 parts of aqueous acrylic emulsions, 40-60 parts of calcium powders, 6-10 parts of titanium dioxides, 0.05-3 parts of dispersing agents, 0.05-2 parts of wettings
Agent and 3-10 parts of water are added in stirred tank, are dispersed 10-30 minutes, filtering and discharging.
Preferably, the calcium powder is the dicalcium powder of 400-1250 mesh, and titanium dioxide is rutile-type, anatase titanium dioxide or plate titanium-type
One of or a variety of combinations.
Preferably, the dispersing agent is one in sodium tripolyphosphate, sodium polyphosphate, calgon or tetrapotassium pyrophosphate
Kind or a variety of combinations, and wetting agent is polyether siloxane copolymer TEGO series or modified polyorganosiloxane copolymer solution B YK
The combination of one or both of series.
(3) beneficial effect
The aqueous acrylic emulsion and preparation method thereof that the present invention provides a kind of for sealant.Compared with prior art
Have it is following the utility model has the advantages that
(1), this is used for aqueous acrylic emulsion of sealant and preparation method thereof, and raw material parts by weights ratio includes: cream
40-60 parts of 0.5-2 parts of agent, 0.05-0.3 parts of sodium bicarbonate, 8-15 parts of initiator and deionized water, 8-15 parts of mix monomer and
0.2-0.8 parts of neutralizer, the raw material of the mix monomer includes: 10-20 parts of acrylate monomer, metering system by weight
20-30 parts of acid ester monomer, 1-4 parts of acrylic monomers, 0.5-4 parts of functional acrylic monomer and maleic acid diester containing epoxy group
5-10 parts, it can be achieved that from the angle of synthesis technology, aqueous the third of adjustment different structure, different molecular weight and different glass temperature
Olefin(e) acid lotion prepares high-performance water-based sealant, which mixes system with pigments and fillers, dispersing agent and reinforcing agent
Standby aqueous sealant has and substrate high adhesion force, superior flexibility and excellent chemical resistance.
(2), this is used for aqueous acrylic emulsion of sealant and preparation method thereof, specifically includes the following steps: S1, mixing
The preparation of monomer: first based on mass fraction, acrylate monomer, methacrylate list are weighed respectively by weighing equipment
Body, acrylic monomers, the functional acrylic monomer containing epoxy group and maleic acid diester are mixed evenly and prepare mix monomer
It is spare, the preparation of S2, aqueous acrylic emulsion: based on mass fraction, by emulsifier, sodium bicarbonate, initiator and deionized water
It is added in reaction kettle, is warming up to 75-85 DEG C, the mix monomer that then a dropping step S1 is prepared in 15-40 minutes is stablized
Remaining mix monomer and initiator are added dropwise to complete by 5-20min in 3-4h, are warming up to 80-85 DEG C of curing 1-2h, are cooled to
40-60 DEG C, neutralizer is added later and neutralizes, cooling discharge obtains aqueous acrylic emulsion, it can be achieved that logical after keeping the temperature 20-40min
It crosses using functional acrylic monomers and maleic acid diester modified aqueous acrylic acid lotion containing epoxy group, enhancing and substrate table
The hydrogen bond action in face, the adhesive force of effective lift-off seal glue.
(3), this is used for aqueous acrylic emulsion of sealant and preparation method thereof, and the application in sealant field includes
Following steps: based on mass fraction, by 30-40 parts of aqueous acrylic emulsions, 40-60 parts of calcium powders, 6-10 parts of titanium dioxides, 0.05-3
Part dispersing agent, 0.05-2 parts of wetting agents and 3-10 parts of water are added in stirred tank, are dispersed 10-30 minutes, filtering and discharging, and calcium powder is
The dicalcium powder of 400-1250 mesh, and titanium dioxide is one of rutile-type, anatase titanium dioxide or plate titanium-type or a variety of combinations, dispersion
Agent is one of sodium tripolyphosphate, sodium polyphosphate, calgon or tetrapotassium pyrophosphate or a variety of combinations, and wetting agent
For the group of one or both of polyether siloxane copolymer TEGO series or modified polyorganosiloxane copolymer solution B YK series
It closes, it can be achieved that using the aqueous acrylic emulsion of sealant, directly to be sealed use, the water for the sealant that the present invention synthesizes
Property the acrylic emulsion performances that have that flexibility is good, medium-resistance is excellent etc..
Detailed description of the invention
Fig. 1 is the flow chart of preparation method of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the present invention provides a kind of three kinds of technical solutions: aqueous acrylic emulsion for sealant
Preparation method, specifically include following embodiment:
Embodiment 1
The preparation of S1, aqueous acrylic emulsion, the type of feed and dosage of each component such as table 1:
Table 1:
Preparation process: in terms of mass fraction, 15 parts of methyl acrylate, 25 parts of methyl methacrylate, acrylic acid 2 are weighed
Part, 2 parts of glycidyl methacrylate and 8 parts of dimethyl maleate are mixed evenly that prepare mix monomer spare；It will
The emulsifier of 0.75 part of OP-9 and 0.75 part of SDS, 0.05 part of sodium bicarbonate, 10% KPS and 45.6 part of deionized water be added to
In reaction kettle, 80 DEG C are warming up to, 10% mix monomer is added dropwise in 30 minutes, stablizes 15 minutes, by remaining mix monomer
It is added dropwise to complete in 3 hours with initiator, is warming up to 85 DEG C and cures 1 hour, be cooled to 60 DEG C, 0.6 part of neutralizer is added and neutralizes,
Cooling discharge obtains aqueous acrylic emulsion after heat preservation 30 minutes.
The performance of aqueous acrylic emulsion: solid content 53%；Viscosity is 3500cP；Emulsion particle diameter is 160nm；Vitrifying
Temperature is -10 DEG C.
The preparation of S2, aqueous acrylic emulsion: in terms of mass fraction, the preparation of aqueous sealant forms situation such as table 2:
Table 2:
Preparation process: in terms of mass fraction, by 30 parts, 50 part 600 mesh calcium powder of aqueous acrylic emulsion, 10 parts of anatase titanium dioxide titaniums
White powder, 0.2 part of sodium tripolyphosphate, 0.2 part of TEGO245 and 9.6 part of water are added in stirred tank, are dispersed 20 minutes, filtering and discharging.
Aqueous sealant performance: it by aqueous sealant encapsulating, squeezes out, performance such as table 3:
Table 3:
As shown in Table 3, aqueous acrylic emulsion of the invention and its application in aqueous sealant have adhesive force
It is high, flexibility is good, surface drying time is fast, working life is long and the extrudability performances such as excellent, aqueous acrylic emulsion of the invention is first
Be with containing epoxy group functional acrylic monomers and the monomers such as maleic acid diester and the monomer copolyreaction of conventional propylene acids,
Epoxy group and ester bond are introduced into resin body structure, aqueous acrylic emulsion is prepared, by adjusting containing epoxy group
The monomers dosage such as functional acrylic monomers and maleic acid diester, can regulate and control resin adhesive force and glass transition temperature, it is last in
The high-performance water-based acrylic emulsion for sealant can be obtained with emulsification, the present invention has energy-saving and environmental protection, low in cost etc.
Advantage.
Embodiment 2
The preparation of S1, aqueous acrylic emulsion, the type of feed and dosage of each component such as table 4:
Table 4:
Preparation process: in terms of mass fraction, 20 parts of butyl acrylate, 20 parts of methyl methacrylate, acrylic acid 3 are weighed
Part, 4 parts of glycidyl methacrylate and 10 parts of dimethyl maleate are mixed evenly that prepare mix monomer spare；It will
The emulsifier of 0.5 part of OP-9 and 0.5 part of SR-10,0.1 part of sodium bicarbonate, 10% Ammonium Persulfate 98.5 and 40.8 parts of deionized waters add
Enter into reaction kettle, be warming up to 80 DEG C, 10% mix monomer is added dropwise in 30 minutes, stablizes 15 minutes, by remaining mixing
Monomer and initiator are added dropwise to complete in 3 hours, are warming up to 85 DEG C and are cured 1 hour, are cooled to 60 DEG C, 0.6 part of neutralizer is added
It neutralizes, cooling discharge obtains aqueous acrylic emulsion after heat preservation 30 minutes.
The performance of aqueous acrylic emulsion: solid content 55%；Viscosity is 1200cP；Emulsion particle diameter is 120nm；Vitrifying
Temperature is -20 DEG C.
The preparation of S2, aqueous acrylic emulsion: in terms of mass fraction, the preparation of aqueous sealant forms situation such as table 5:
Table 5:
Preparation process: in terms of mass fraction, by 35 parts, 52 part 800 mesh calcium powder of aqueous acrylic emulsion, 8 parts of rutile-types
Titanium dioxide, 0.15 part of sodium polyphosphate, 0.15 part of BYK-346 and 4.7 part of water are added in stirred tank, are dispersed 20 minutes, filtering
Discharging.
Aqueous sealant performance: it by aqueous sealant encapsulating, squeezes out, performance such as table 6:
Table 6:
Embodiment 3
The preparation of S1, aqueous acrylic emulsion, the type of feed and dosage of each component such as table 7:
Table 7:
Preparation process: in terms of mass fraction, 10 parts of methyl acrylate, 10 parts of butyl acrylate, methyl methacrylate are weighed
20 parts of ester, 3 parts of acrylic acid, it is mixed that preparation is mixed evenly in 4 parts of glycidyl methacrylate and 10 parts of dibutyl maleate
It is spare to close monomer；By the emulsifier of 0.5 part of OP-9 and 0.5 part of SR-10,0.1 part of sodium bicarbonate, 10% Ammonium Persulfate 98.5 and 40.8
Part deionized water is added in reaction kettle, is warming up to 80 DEG C, and 10% mix monomer is added dropwise in 30 minutes, stablizes 15 minutes,
Remaining mix monomer and initiator are added dropwise to complete in 3 hours, 85 DEG C is warming up to and cures 1 hour, be cooled to 60 DEG C, be added
0.6 part of neutralizer neutralizes, and cooling discharge obtains aqueous acrylic emulsion after heat preservation 30 minutes.
The performance of aqueous acrylic emulsion: solid content 54%；Viscosity is 2400cP；Emulsion particle diameter is 150nm；Vitrifying
Temperature is -15 DEG C.
The preparation of S2, aqueous acrylic emulsion: in terms of mass fraction, the preparation of aqueous sealant forms situation such as table 8:
Table 8:
Preparation process: in terms of mass fraction, by 35 parts, 52 part 800 mesh calcium powder of aqueous acrylic emulsion, 8 parts of rutile-types
Titanium dioxide, 0.15 part of sodium polyphosphate, 0.15 part of BYK-346 and 4.7 part of water are added in stirred tank, are dispersed 20 minutes, filtering
Discharging.
Aqueous sealant performance: it by aqueous sealant encapsulating, squeezes out, performance such as table 9:
Table 9:
Embodiment of the present invention are not limited by the above embodiments, other it is any away from Spirit Essence of the invention with
Modification made by principle changes, substitution, combines and simplify, and should be equivalent substitute mode, should all be included in guarantor of the invention
Within the scope of shield.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of aqueous acrylic emulsion for sealant, it is characterised in that: its raw material parts by weights ratio includes: emulsifier
40-60 parts of 0.5-2 parts, 0.05-0.3 parts of sodium bicarbonate, 8-15 parts of initiator and deionized water, 8-15 parts of mix monomer and neutralization
0.2-0.8 parts of agent, the raw material of the mix monomer includes: 10-20 parts of acrylate monomer, methacrylate by weight
20-30 parts of monomer, 1-4 parts of acrylic monomers, 0.5-4 parts of functional acrylic monomer and maleic acid diester 5-10 containing epoxy group
Part.
2. a kind of aqueous acrylic emulsion for sealant according to claim 1, it is characterised in that: the acrylic acid
Ester monomer is one of methyl acrylate, ethyl acrylate or butyl acrylate or a variety of combinations, and methacrylate
Monomer is one of methyl methacrylate, propyl methacrylate or butyl methacrylate or a variety of combinations.
3. a kind of aqueous acrylic emulsion for sealant according to claim 1, it is characterised in that: the acrylic acid
Monomer is the combination of one or both of acrylic or methacrylic acid, and the functional acrylic monomer containing epoxy group is first
The combination of one or both of base glycidyl acrylate or glycidyl acrylate.
4. a kind of aqueous acrylic emulsion for sealant according to claim 1, it is characterised in that: the maleic acid
Diester is one of dimethyl maleate, diethyl maleate, dipropyl maleate or dibutyl maleate or a variety of groups
It closes, and the nonionic emulsifier, SR- such as emulsifier is alkyl phenol polyoxyethylene ether OP series, ER-30 of ADEKA REASOAP
10, in fatty alcohol polyoxyethylene ether ammonium sulfate, dodecyl sodium sulfate or neopelex anionic emulsifier
One or more combinations.
5. a kind of aqueous acrylic emulsion for sealant according to claim 1, it is characterised in that: the initiator
For one of sodium peroxydisulfate, potassium peroxydisulfate or ammonium persulfate or a variety of combinations, and neutralizer is ammonium hydroxide, triethylamine or N, N-
One of dimethylethanolamine or a variety of combinations.
6. a kind of aqueous acrylic emulsion for sealant described in -5 any one according to claim 1, it is characterised in that:
Preparation method specifically includes the following steps:
The preparation of S1, mix monomer: first based on mass fraction, acrylate monomer, methyl are weighed respectively by weighing equipment
System is mixed evenly in acrylate monomer, acrylic monomers, the functional acrylic monomer containing epoxy group and maleic acid diester
Standby mix monomer is spare；
The preparation of S2, aqueous acrylic emulsion: based on mass fraction, emulsifier, sodium bicarbonate, initiator and deionized water are added
Enter into reaction kettle, be warming up to 75-85 DEG C, the mix monomer that then a dropping step S1 is prepared in 15-40 minutes stablizes 5-
Remaining mix monomer and initiator are added dropwise to complete by 20min in 3-4h, are warming up to 80-85 DEG C of curing 1-2h, are cooled to
40-60 DEG C, neutralizer is added later and neutralizes, cooling discharge obtains aqueous acrylic emulsion after keeping the temperature 20-40min.
7. a kind of aqueous acrylic emulsion for sealant according to claim 6, it is characterised in that: described aqueous third
The solid content of olefin(e) acid lotion is 35-55%, and viscosity is 1000-5000cP, emulsion particle diameter 90-250nm, glass transition temperature
It is -20-20 DEG C.
8. a kind of aqueous acrylic emulsion for sealant according to claim 6, it is characterised in that: described aqueous third
Olefin(e) acid lotion sealant field application the following steps are included: based on mass fraction, by 30-40 parts of aqueous acrylic emulsions,
40-60 parts of calcium powders, 6-10 parts of titanium dioxides, 0.05-3 parts of dispersing agents, 0.05-2 parts of wetting agents and 3-10 parts of water are added to stirred tank
In, disperse 10-30 minutes, filtering and discharging.
9. a kind of aqueous acrylic emulsion for sealant according to claim 8, it is characterised in that: the calcium powder is
The dicalcium powder of 400-1250 mesh, and titanium dioxide is one of rutile-type, anatase titanium dioxide or plate titanium-type or a variety of combinations.
10. a kind of aqueous acrylic emulsion for sealant according to claim 8, it is characterised in that: the dispersion
Agent is one of sodium tripolyphosphate, sodium polyphosphate, calgon or tetrapotassium pyrophosphate or a variety of combinations, and wetting agent
For the group of one or both of polyether siloxane copolymer TEGO series or modified polyorganosiloxane copolymer solution B YK series
It closes.
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| CN117447946A (en) * | 2023-09-07 | 2024-01-26 | 山东三佳聚合高分子材料有限公司 | High-solid-content acrylic emulsion for water-based sealant and preparation method thereof |
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