CN106432587B - Polyacrylate dispersion and its preparation method, adhesive and preparation method thereof - Google Patents
Polyacrylate dispersion and its preparation method, adhesive and preparation method thereof Download PDFInfo
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- CN106432587B CN106432587B CN201610907169.4A CN201610907169A CN106432587B CN 106432587 B CN106432587 B CN 106432587B CN 201610907169 A CN201610907169 A CN 201610907169A CN 106432587 B CN106432587 B CN 106432587B
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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
- 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
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
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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
- C09J131/00—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 an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
- C09J131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09J131/04—Homopolymers or copolymers of vinyl acetate
-
- 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
Abstract
The present invention provide a kind of polyacrylate dispersion and its preparation method, adhesive and preparation method thereof, for solving the problems such as binder performance is single, of high cost in the prior art.Present invention obtains VAE lotions are blended using PA lotions, it can achieve the purpose that performance complement, reduce cost.Meanwhile blending and modifying also has many advantages, such as that process equipment is simple, technical process is easy to implement and regulation and control.
Description
Technical field
The present invention relates to high molecule emulsion polymerization fields, and in particular, to a kind of polyacrylate dispersion and its preparation
Method, adhesive and preparation method thereof.
Background technology
The country is by vinyl acetate-ethylene copolymerization emulsions (VAE) emulsion applications in cigarette, timber, paper, fabric, skin
Bonding and the non-woven fabrics bonding of the industries such as leather, concrete, are prevented carpet backing glue, electrostatic spinning, paper and coating, coating for internal and external wall
Glue, wallpaper glue, floor glue, filleting glue, cement mortar etc., but it is not so good as external water in application depth and range
It is flat.One of reason is that the VAE lotions manufacturing technology that domestic Beijing Organic Chemical Plant and Sichuan vinylon plant introduce is from U.S.
What Reicheld chemical companies of state introduced, it the difference is that only that the raw materials used ethylene of Beijing Organic Chemical Plant is by petroleum cracking
It is made, and Sichuan vinylon plant feed ethylene is be dehydrated obtained, thus manufacturing technology circuit list in the presence of a catalyst by ethyl alcohol
One, kind is dull, does not adapt to the various demands of different field:
Secondly being that the country is limited by fund and equipment, basic theory and application study are difficult to deeply be ground
Study carefully.For the gap of the domestic and international this respect of shortening, on the one hand to reinforce the research in terms of VAE lotion manufacturing technologies, it is suitable to produce
The lotion new varieties of different field demand are closed, application range is expanded；On the other hand to pay attention to the research to application square foundation face, it is right
Existing VAE lotions are modified, and to obtain the more preferably newer material of performance, expand its purposes, expand its dosage, promote China
The development of VAE lotion production industries.
Invention content
Technical solution used by solving the above problems be a kind of polyacrylate dispersion (PA) and its preparation method, glue
Mixture and preparation method thereof.
The present invention provides a kind of preparation method of polyacrylate dispersion, includes the following steps：
Prepare the first component solution；
Prepare the second component；
Part first component solution is prepared into initiator solution；
By remaining first component solution and part the second component pre-emulsification, pre-emulsion is obtained；
Pre-emulsion and remaining second component and initiator solution are subjected to emulsion reaction, obtain polyacrylate breast
Liquid.
Preferably, the first component solution of the preparation includes：
By the deionized water of 59-61 parts by weight, the lauryl sodium sulfate of 1.7-1.9 parts by weight and the mixture of OP-10
Carry out mixing obtain the first component solution, wherein lauryl sodium sulfate be used as anion emulsifier, OP-10 as it is non-from
Sub- emulsifier, lauryl sodium sulfate and OP-10 mass ratioes are 1:2.
Wherein, it is purchased from two factory of Jiangsu Province's auxiliary agent chemical industry.
Preferably, the second component of the preparation includes：
By 3.2-3.6 parts by weight as the methyl methacrylate of hard monomer, 15-16 parts by weight as soft monomer
The acrylic acid as functional monomer of acrylic acid-2-ethyl ethyl ester and/or butyl acrylate, 0.5-1 parts by weight, 0.3-0.7 weights
The acrylonitrile mixing as cross-linking monomer for measuring part obtains the second component.
Preferably, described part first component solution is prepared into initiator solution to include：
It is dissolved in first component solution of 1/3-1/2 weight using 0.3 parts by weight as the ammonium persulfate of initiator, obtains
Obtain initiator solution.
Preferably, described by remaining first component solution and part the second component pre-emulsification, obtain pre-emulsion
Including；
By remaining first component solution and second component of 1/4-1/8 weight and the conduct of 0.5 parts by weight
The NaHCO of pH buffer3It is mixed, obtains pre-emulsion.
Preferably, described by pre-emulsion and remaining second component and initiator solution carry out emulsion reaction, gathered
Acrylic acid ester emulsion includes：
At 75-80 DEG C, the initiator solution is added dropwise to the pre-emulsion, until pre-emulsion becomes blue；
Then, while initiator solution and remaining second component is added, heat preservation 3-5h reactions, adjusting pH value is 7-8, is obtained
Obtain polyacrylate dispersion.
The present invention also provides a kind of polyacrylate dispersion, the polyacrylate dispersion is to use above-mentioned polypropylene
Prepared by the preparation method of acid esters lotion.
The present invention also provides a kind of preparation methods of adhesive, by polyacrylate dispersion and vinyl acetate-ethylene copolymerization
Lotion carries out blending acquisition, includes the following steps：
The pH value for adjusting vinyl acetate-ethylene copolymerization emulsions is 7-9；
Polyacrylate dispersion and vinyl acetate-ethylene copolymerization emulsions are pressed 1:The mass ratio of 3-4, which be blended, to be glued
Mixture.
The present invention also provides a kind of adhesive, the adhesive is the preparation method system using above-mentioned adhesive
Standby.
Blending is the simple and effective method of one kind of polymer modification.By variety classes polymer using physically or chemically
Method be blended, with improve original copolymer performance or formed with brand-new performance polymeric system, oneself become macromolecule material
Expect a new important branch in scientific and engineering field.The polymer of different performance is blended, it can be to a certain extent
Improve the performance of polymer.It is exactly to be manufactured by way of blending and modifying, and obtain that many, which has the material of superior toughness,
It obtained and was widely applied.
Polymer blending can also make blend components realize complementation in performance, make up on certain superpolymer performances not
Foot, develops the superior material of comprehensive performance.Expensive polymer is blended with cheap polymer, it is possible to
To performance is not low or slightly below the former material, and there are many cost reduction.
VAE lotions have good filming performance, a variety of matrix are all had with good adhesive property, but corresponding to difference
The requirement in field, adhesive property is it is still necessary to be further improved, to meet different needs.
PA lotions are had many advantages, such as that water-tolerant, adhesive strength are big, are easy to be designed using different monomers formula, while with
VAE lotions are compared, and also there is defect of high cost.
A kind of polyacrylate dispersion provided by the invention and its preparation method, adhesive and preparation method thereof.Use PA
VAE lotions are blended in lotion, can achieve the purpose that performance complement, reduce cost.Meanwhile blending and modifying also has processing
The advantages that equipment is simple, technical process is easy to implement and regulation and control.
Specific implementation mode
To make those skilled in the art more fully understand technical scheme of the present invention, With reference to embodiment to this
Invention is described in further detail.
It should be noted that listed substance is all made of commercial product without specified otherwise in the embodiment of the present invention.
Embodiment 1：
The present embodiment provides a kind of polyacrylate dispersions and preparation method thereof, include the following steps：
1. preparing the first component solution；
60g deionized waters, anion are added in the 250ml four-hole boiling flasks equipped with blender thermometer reflux condensing tube
(lauryl sodium sulfate) and nonionic emulsifier (OP-10) are proportionally 1:2 ratio adds 1.8g, and quickly stirring is mixed
It closes uniformly, obtains the first component solution；
2. preparing the second component
Weigh the hard monomer (methyl methacrylate), 6g soft monomers butyl acrylate, 8.5g soft monomer (propylene of 3.4g
Acid -2- diethyl acetamidomalonates), the cross-linking monomer (acrylonitrile) of 0.75g functional monomers (acrylic acid), 0.5g obtains the second component.
3. part first component solution is prepared initiator solution
It weighs the 1/3 of the first component solution weight to be used to dissolve 0.3g initiators (ammonium persulfate), obtains initiator solution.
4. by remaining first component solution and part the second component pre-emulsification, pre-emulsion is obtained
0.5g pH buffers (sodium bicarbonate), 1/4 parts by weight are added in the reactor containing remaining first component solution
The second component, after pre-emulsification 35min, form pre-emulsification solution, wherein in pre-emulsion, water is dispersed phase, in this case
It can guarantee that monomer is wrapped in emulsifier micella, subsequent dropwise addition pre-emulsion, while adding monomer and emulsifier；
5. pre-emulsion and remaining second component and initiator solution are carried out emulsion reaction, polyacrylate breast is obtained
Liquid.
Temperature of reactor rises to 77 DEG C, and initiator solution is slowly added dropwise, and the too fast monomer polymerization of rate of addition is violent, can lead
Cause the molecular weight formed excessive, it is unstable to be easy to cause the lotion to be formed, and is after pre-emulsion is added dropwise, to gather after liquid becomes basket
It runs the beginning jointly, produces small particles, because the grain size of lotion is small, indigo plant is presented in the color that light reflects after being reflected by lotion
Color, system become indigo plant and illustrate that system starts to polymerize, and illustrate that the monomer reaction tentatively added is complete after system is without reflux；
Then, while remaining initiator solution and remaining second component is added dropwise, after the two adds, lotion insulation reaction 4h
Afterwards, 35 DEG C are cooled to, it is 7.5 that ammonium hydroxide, which is added, and is adjusted to pH value, obtains acrylic acid ester emulsion (PA).
The present embodiment also provides a kind of adhesive and preparation method thereof, specific as follows：
VAE lotions are added in the three-necked flask equipped with blender, dropping funel, the pH value of VAE lotions is adjusted with ammonium hydroxide
After 7.5, the ionic enhancing of VAE lotions and PA emulsion latex grains.
Since grain size differs too big, the barrier potential formed by steric hindrance between two kinds of emulsion particles, it is not enough to prevent VAE latex
Absorption of the grain to PA emulsion particles, due to being acted on without electrostatic repulsion between PA emulsion particles and VAE latex grain before adjusting pH value, so
Than being not easy the stability for being conducive to improve blending emulsion in this way close to VAE latex grain stratum nucleare after adjusting pH value.
According to PA and VAE1:3.75 ratio obtains modified lotion to carry out emulsion blending, modified to obtain
Adhesive.
By the tensile strength after the above-mentioned adhesive use prepared, wooden unit/wooden unit compression shear strength, PVC/PVC strippings
From strength test, 1 the results are shown in Table.
The measurement samples of latex of tensile strength casting film directly on polyfluortetraethylene plate, exists at room temperature
Tensile strength and elongation at break, tensile speed 30mm/min are measured on INSTRON43oZ electronic tensile machines.
Timber is made the sample of 3.0x2.5cm sizes by the test of compression shear strength, single spreading on each sample, is dried in the air to half
It is bonded after dry, at room temperature in its compression shear strength (reference national standard of the omnipotent pressure testing aircraft measurements of newton after placement 7h
89) the of GB1178 1
PvC waterproof rolls are made the sample of 110x30cm sizes by the test of peel strength, single spreading on each sample,
It bonds after drying in the air to surface filming, is measured on INSTRON43OZ electronic tensile machines after placing 16h at room temperature.
Embodiment 2：
The present embodiment provides a kind of polyacrylate dispersions and preparation method thereof, include the following steps：
1. preparing the first component solution；
59g deionized waters, anion are added in the 250ml four-hole boiling flasks equipped with blender thermometer reflux condensing tube
(lauryl sodium sulfate) and nonionic emulsifier (OP-10) are proportionally 1:2 ratio adds 1.7g, and quickly stirring is mixed
It closes uniformly, obtains the first component solution；
2. preparing the second component
Weigh the hard monomer (methyl methacrylate), 8g soft monomers butyl acrylate, 7g soft monomer (acrylic acid-of 3.2g
2- diethyl acetamidomalonates), the cross-linking monomer (acrylonitrile) of 0.5g functional monomers (acrylic acid), 0.3g obtains the second component.
3. part first component solution is prepared initiator solution
It weighs the 1/2 of the first component solution weight to be used to dissolve 0.3g initiators (ammonium persulfate), obtains initiator solution.
4. by remaining first component solution and part the second component pre-emulsification, pre-emulsion is obtained
0.5g pH buffers (sodium bicarbonate), 1/8 parts by weight are added in the reactor containing remaining first component solution
The second component, after pre-emulsification 30min, form pre-emulsification solution, wherein in pre-emulsion, water is dispersed phase, in this case
It can guarantee that monomer is wrapped in emulsifier micella, subsequent dropwise addition pre-emulsion, while adding monomer and emulsifier；
5. pre-emulsion and remaining second component and initiator solution are carried out emulsion reaction, polyacrylate breast is obtained
Liquid.
Temperature of reactor rises to 75 DEG C, and initiator solution is slowly added dropwise, and the too fast monomer polymerization of rate of addition is violent, can lead
Cause the molecular weight formed excessive, it is unstable to be easy to cause the lotion to be formed, and is after pre-emulsion is added dropwise, to gather after liquid becomes basket
It runs the beginning jointly, produces small particles, because the grain size of lotion is small, indigo plant is presented in the color that light reflects after being reflected by lotion
Color, system become indigo plant and illustrate that system starts to polymerize, and the monomer reaction tentatively added after system is without reflux is complete；
Then, while remaining initiator solution and remaining second component is added dropwise, after the two adds, lotion insulation reaction 3h
Afterwards, 40 DEG C are cooled to, it is 7 that ammonium hydroxide, which is added, and is adjusted to pH value, obtains acrylic acid ester emulsion (PA).
The present embodiment also provides a kind of adhesive and preparation method thereof, specific as follows：
VAE lotions are added in the three-necked flask equipped with blender, dropping funel, the pH value 7 of VAE lotions is adjusted with ammonium hydroxide
Afterwards, the ionic enhancing of VAE lotions and PA emulsion latex grains.
Since grain size differs too big, the barrier potential formed by steric hindrance between two kinds of emulsion particles, it is not enough to prevent VAE latex
Absorption of the grain to PA emulsion particles, due to being acted on without electrostatic repulsion between emulsion particle and VAE latex grain before adjusting pH value, so
Than being not easy the stability for being conducive to improve blending emulsion in this way close to VAE latex grain stratum nucleare after adjusting pH value.
According to PA and VAE1:3 ratio obtains modified lotion to carry out emulsion blending, to obtain modified glue
Mixture.
By the tensile strength after the above-mentioned adhesive use prepared, wooden unit/wooden unit compression shear strength, PVC/PVC strippings
From strength test, 1 the results are shown in Table.
Embodiment 3：
The present embodiment provides a kind of polyacrylate dispersions and preparation method thereof, include the following steps：
1. preparing the first component solution；
61g deionized waters, anion are added in the 250ml four-hole boiling flasks equipped with blender thermometer reflux condensing tube
(lauryl sodium sulfate) and nonionic emulsifier (OP-10) are proportionally 1:2 ratio adds 1.9g, and quickly stirring is mixed
It closes uniformly, obtains the first component solution；
2. preparing the second component
Weigh the hard monomer (methyl methacrylate), 8g soft monomers butyl acrylate, 8g soft monomer (acrylic acid-of 3.6g
2- diethyl acetamidomalonates), the cross-linking monomer (acrylonitrile) of 1g functional monomers (acrylic acid), 0.7g obtains the second component.
3. part first component solution is prepared initiator solution
It weighs the 2/5 of the first component solution weight to be used to dissolve 0.3g initiators (ammonium persulfate), obtains initiator solution.
4. by remaining first component solution and part the second component pre-emulsification, pre-emulsion is obtained
0.5g pH buffers (sodium bicarbonate), 1/5 parts by weight are added in the reactor containing remaining first component solution
The second component, after pre-emulsification 30-45min, form pre-emulsification solution, wherein in pre-emulsion, water is dispersed phase, such
Words are it is ensured that monomer is wrapped in emulsifier micella, subsequent dropwise addition pre-emulsion, while adding monomer and emulsifier；
5. pre-emulsion and remaining second component and initiator solution are carried out emulsion reaction, polyacrylate breast is obtained
Liquid.
Temperature of reactor rises to 80 DEG C, and initiator solution is slowly added dropwise, and the too fast monomer polymerization of rate of addition is violent, can lead
Cause the molecular weight formed excessive, it is unstable to be easy to cause the lotion to be formed, and is after pre-emulsion is added dropwise, to gather after liquid becomes basket
It runs the beginning jointly, produces small particles, because the grain size of lotion is small, indigo plant is presented in the color that light reflects after being reflected by lotion
Color, system become indigo plant and illustrate that system starts to polymerize, and the monomer reaction tentatively added after system is without reflux is complete；
Then, while remaining initiator solution and remaining second component is added dropwise, after the two adds, lotion insulation reaction 5h
Afterwards, 50 DEG C are cooled to, it is 8 that ammonium hydroxide, which is added, and is adjusted to pH value, obtains acrylic acid ester emulsion (PA).
The present embodiment also provides a kind of adhesive and preparation method thereof, specific as follows：
VAE lotions are added in the three-necked flask equipped with blender, dropping funel, the pH value 9 of VAE lotions is adjusted with ammonium hydroxide
Afterwards, the ionic enhancing of VAE lotions and PA emulsion latex grains.
Since grain size differs too big, the barrier potential formed by steric hindrance between two kinds of emulsion particles, it is not enough to prevent VAE latex
Absorption of the grain to PA emulsion particles, due to being acted on without electrostatic repulsion between emulsion particle and VAE latex grain before adjusting pH value, so
Than being not easy the stability for being conducive to improve blending emulsion in this way close to VAE latex grain stratum nucleare after adjusting pH value.
According to PA and VAE1:4 ratio obtains modified lotion to carry out emulsion blending, to obtain modified glue
Mixture.
By the tensile strength after the above-mentioned adhesive use prepared, wooden unit/wooden unit compression shear strength, PVC/PVC strippings
From strength test, 1 the results are shown in Table.
Comparative example
Tensile strength, wooden unit/wooden unit compression shear strength, PVC/ are carried out using commercially available vinyl acetate-ethylene copolymerization emulsions
PVC peel strength tests, the results are shown in Table 1.
1 1-3 of the embodiment of the present invention of table and the performance test after the use of adhesive in comparative example
As seen from Table 1, after obtaining the above-mentioned test of adhesive progress using the present invention, efficacy parameter is improved.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, in the essence for not departing from the present invention
In the case of refreshing and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (4)
1. a kind of preparation method of polyacrylate dispersion, which is characterized in that include the following steps：
Preparing the first component solution includes：By the deionized water of 59-61 parts by weight, the dodecyl sulphate of 1.7-1.9 parts by weight
The mixture of sodium and OP-10 carry out mixing and obtain the first component solution, wherein lauryl sodium sulfate is as anionic emulsifying
Agent, for OP-10 as nonionic emulsifier, lauryl sodium sulfate and OP-10 mass ratioes are 1:2；
Preparing the second component includes：By the methyl methacrylate as hard monomer of 3.2-3.6 parts by weight, 15-16 parts by weight
As the acrylic acid-2-ethyl ethyl ester and/or butyl acrylate of soft monomer, third as functional monomer of 0.5-1 parts by weight
The acrylonitrile mixing as cross-linking monomer of olefin(e) acid, 0.3-0.7 parts by weight obtains the second component；
Part first component solution, which is prepared initiator solution, includes：Using 0.3 parts by weight as the ammonium persulfate of initiator
It is dissolved in first component solution of 1/3-1/2 weight, obtains initiator solution；
By remaining first component solution and part the second component pre-emulsification, pre-emulsion is obtained, is specifically included：It will be remaining
First component solution and 1/4-1/8 weight second component and 0.5 parts by weight as pH buffer
NaHCO3It is mixed, obtains pre-emulsion；
Pre-emulsion and remaining second component and initiator solution are subjected to emulsion reaction, obtain polyacrylate dispersion：Tool
Body includes：At 75-80 DEG C, the initiator solution is added dropwise to the pre-emulsion, until pre-emulsion becomes blue；It connects
It, while initiator solution and remaining second component is added, heat preservation 3-5h reactions, adjusting pH value is 7-8, obtains polyacrylic acid
Ester lotion.
2. a kind of polyacrylate dispersion, which is characterized in that the polyacrylate dispersion is using as described in claim 1
Polyacrylate dispersion preparation method prepare.
3. a kind of preparation method of adhesive, which is characterized in that by the polyacrylate dispersion and acetic acid second described in claim 2
Alkene-ethylene copolymerization emulsions carry out blending acquisition, include the following steps：
The pH value for adjusting vinyl acetate-ethylene copolymerization emulsions is 7-9；
Polyacrylate dispersion and vinyl acetate-ethylene copolymerization emulsions are pressed 1:The mass ratio of 3-4 be blended and is bonded
Agent.
4. a kind of adhesive, which is characterized in that the adhesive is the preparation side using adhesive as claimed in claim 3
Prepared by method.
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