CN109536086A - Bi-component waterborne styrene-acrylic emulsion adhesive and preparation method thereof for boiling packaging - Google Patents
Bi-component waterborne styrene-acrylic emulsion adhesive and preparation method thereof for boiling packaging Download PDFInfo
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- CN109536086A CN109536086A CN201811354281.5A CN201811354281A CN109536086A CN 109536086 A CN109536086 A CN 109536086A CN 201811354281 A CN201811354281 A CN 201811354281A CN 109536086 A CN109536086 A CN 109536086A
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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
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
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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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Abstract
The invention discloses a kind of bi-component waterborne styrene-acrylic emulsion adhesives for boiling packaging, comprising: host agent and curing agent；Wherein, the host agent is the waterborne styrene-acrylic emulsion adding the acrylic ester monomer of crosslinking agent, defoaming agent and wetting agent and polymerizeing；The curing agent is Isocyanates curing agent；The mass ratio when host agent and two component of curing agent are used in mixed way is 100:1.5.The adhesive is using styrene, (methyl) acrylate monomer and cross-linking monomer as raw material, using emulsion polymerisation process, prepare the waterborne styrene-acrylic emulsion containing self-crosslinking structure, later period using when be added curing agent to be prepared into two component adhesive, multiple cross-linked to ensure later period water-fast test passes, peel strength hardly declines after boiling.
Description
Technical field
The present invention relates to adhesive preparation field more particularly to a kind of bi-component waterborne phenylpropyl alcohol creams that can be used for boiling packaging
Bonding agent and preparation method thereof.
Background technique
Boiling structural packaging is more demanding to adhesive, to have good attachment fastness and water resistance to substrate, currently, water
It boils the common composite adhesive of structural packaging and is essentially solvent based product, but the problems such as there are VOC emission and dissolvent residuals, and
Higher cost；And existing common aqueous acrylic adhesives, since water resistance is poor, peel strength is lower, is unsuitable for boiling
The use of packaging.
Summary of the invention
Based on the problems of prior art, the object of the present invention is to provide a kind of bi-component water for boiling packaging
Property styrene-acrylic emulsion adhesive and preparation method thereof, enough peel strengths and water resistance can be reached, and complete for aqueous binder
Meet environmental requirement entirely, no any organic solvent addition is green safe, also largely reduces material cost.
The purpose of the present invention is what is be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of bi-component waterborne styrene-acrylic emulsion adhesive for boiling packaging, comprising: main
Agent and curing agent；Wherein,
The host agent is the aqueous phenylpropyl alcohol for adding the acrylic ester monomer of crosslinking agent, defoaming agent and wetting agent and polymerizeing
Lotion；
The curing agent is Isocyanates curing agent；
The mass ratio when host agent and two component of curing agent are used in mixed way is 100:1.5.
Embodiment of the present invention also provides a kind of preparation of bi-component waterborne styrene-acrylic emulsion adhesive for boiling packaging
Method is used to prepare bi-component waterborne styrene-acrylic emulsion adhesive of the present invention, comprising the following steps:
The waterborne styrene-acrylic emulsion that the acrylic ester monomer of preparation addition crosslinking agent, defoaming agent and wetting agent polymerize is made
For host agent, using Isocyanates curing agent as curing agent, in use, being 100 by host agent and two constituent mass ratio of curing agent:
1.5 are uniformly mixed and obtain the bi-component waterborne styrene-acrylic emulsion adhesive.
As seen from the above technical solution provided by the invention, provided in an embodiment of the present invention for the double of boiling packaging
Component waterborne styrene-acrylic emulsion adhesive and preparation method thereof, it has the advantage that:
The aqueous phenylpropyl alcohol cream polymerizeing by using the acrylic ester monomer of addition crosslinking agent, defoaming agent and wetting agent
Liquid carries out special ratios with Isocyanates curing agent and is used in mixed way as host agent, so that the bi-component waterborne styrene-acrylic emulsion is viscous
Mixture has multiple cross-linked structure, and water boiling resistance is functional, and high combined strength bination has no irritating odor, easy to use, rate of drying
Fastly, the good feature of the transparency, can be applied to compound between boiling structure.It is solvent-free due to being aqueous binder, it is not present
The problems such as VOC emission and dissolvent residual.
Specific embodiment
Below with reference to particular content of the invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
Belong to protection scope of the present invention.The content being not described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field
The well known prior art.
The embodiment of the present invention provides a kind of bi-component waterborne styrene-acrylic emulsion adhesive for boiling packaging, comprising: host agent
And curing agent；Wherein,
The host agent is the aqueous phenylpropyl alcohol for adding the acrylic ester monomer of crosslinking agent, defoaming agent and wetting agent and polymerizeing
Lotion；
The curing agent is Isocyanates curing agent；
The mass ratio when host agent and two component of curing agent are used in mixed way is 100:1.5.
In above-mentioned adhesive, the waterborne styrene-acrylic emulsion of host agent includes: monomer, self-crosslinking agent, deionized water, emulsifier, draws
Send out agent, initiator solution, rear crosslinking agents, defoaming agent and wetting agent；
Wherein, the monomer includes: styrene 10~40%, (methyl) ethyl acrylate 50~85%, (methyl) propylene
Sour methyl esters 5~25%, (methyl) butyl acrylate 3~20%, (methyl) acrylic acid 2~6% and self-crosslinking agent 2~10%, institute
The total amount for having monomer is 100%；Wherein, (methyl) ethyl acrylate indicates: ethyl methacrylate or ethyl acrylate；(first
Base) methyl acrylate expression: methyl methacrylate or methyl acrylate；(methyl) butyl acrylate indicates: methacrylic acid
Butyl ester or butyl acrylate；(methyl) acrylic acid indicates: methacrylic acid or acrylic acid；
The dosage of the deionized water is the 140% of the monomer gross mass；
The dosage of the emulsifier is the 4~10% of the monomer gross mass；
The dosage of the rear crosslinking agents, defoaming agent and wetting agent is respectively the 0.5~5% of the monomer gross mass, 0.05
~0.6% and 0.5~4%；
The dosage of the initiator is the 0.2~0.8% of the monomer gross mass；
In the initiator solution, the dosage of deionized water used is the 5~10% of the monomer gross mass, described to draw
The dosage for sending out agent is the 0.3~1% of the monomer gross mass.
In above-mentioned waterborne styrene-acrylic emulsion, monomer further include: (methyl) hydroxy-ethyl acrylate 0.1~5% and acrylic acid are different pungent
Ester 0.1~5%.Wherein, (methyl) hydroxy-ethyl acrylate indicates: (methyl) hydroxy-ethyl acrylate or hydroxy-ethyl acrylate；
In above-mentioned waterborne styrene-acrylic emulsion, self-crosslinking agent are as follows: Diacetone Acrylamide (DAAM), acetoacetyl metering system
Acetoacetic ester (AAEM), N- positive fourth (different) oxygroup Methacrylamide (IBMA), GMA (glycidyl methacrylate), oneself two
At least one of acid dihydrazide (ADH).
In above-mentioned waterborne styrene-acrylic emulsion, the initiator uses potassium peroxydisulfate or ammonium persulfate；
The rear crosslinking agents, which use, has polyhydroxylated molecule amount as 300~1500 polyalcohol；
The defoaming agent uses mineral oil defoaming agent or organic silicon defoaming agent；
The wetting agent uses organic silicon or organic-silicon-modified class wetting agent.
In above-mentioned adhesive, the waterborne styrene-acrylic emulsion of host agent is made in the following manner, comprising:
(1) prepare phenylpropyl alcohol pre-emulsion: by monomer styrene, (methyl) ethyl acrylate, (methyl) methyl acrylate,
It (methyl) butyl acrylate and (methyl) acrylic acid and accounts for the emulsifier of all monomer gross mass 2%~4% and accounts for all monomers
The deionized water of gross mass 50% stirs 30min or more in reaction kettle；
(2) initiator solution is prepared, dissolution is sufficiently stirred in deionized water used in initiator solution and initiator
Initiator solution is made；
(3) deionized water is pumped into Xiang Suoshu reaction kettle, the quality of deionized water is the 90% of the monomer gross mass, is added
Enter initiator and remaining emulsifier, be warming up to 70~85 DEG C carry out reaction phenylpropyl alcohol pre-emulsion is made；
(4) to make the initiator made of a dropping step (2) in the reaction kettle of phenylpropyl alcohol pre-emulsion to step (3) water-soluble
Self-crosslinking agent is added to the phenylpropyl alcohol pre-emulsion of reaction kettle when being added dropwise to the 2/3 of the initiator solution gross mass by liquid
In, continue that remaining initiator solution is added dropwise, 85 DEG C of heat preservation 1h after being added dropwise；
(5) 50~60 DEG C are cooled to after the completion of step (4) heat preservation, ammonium hydroxide is added and adjusts pH value to 6~8, post-crosslinking is added
Agent, defoaming agent and wetting agent stir 2h, cool down, discharging, and products therefrom is the waterborne styrene-acrylic emulsion for being used as host agent.
In above-mentioned adhesive, the solid content of the Isocyanates curing agent as curing agent is 75~100%.
The embodiment of the present invention also provides a kind of preparation side of bi-component waterborne styrene-acrylic emulsion adhesive for boiling packaging
Method is used to prepare above-mentioned bi-component waterborne styrene-acrylic emulsion adhesive, comprising the following steps:
The waterborne styrene-acrylic emulsion that the acrylic ester monomer of preparation addition crosslinking agent, defoaming agent and wetting agent polymerize is made
For host agent, using Isocyanates curing agent as curing agent, in use, being 100 by host agent and two constituent mass ratio of curing agent:
1.5 are uniformly mixed and obtain the bi-component waterborne styrene-acrylic emulsion adhesive.
In the above method, preparing waterborne styrene-acrylic emulsion as component used in host agent includes:
Monomer, self-crosslinking agent, deionized water, emulsifier, initiator, initiator solution, rear crosslinking agents, defoaming agent and profit
Humectant；Wherein, the monomer includes: styrene 10~40%, (methyl) ethyl acrylate 50~85%, (methyl) acrylic acid first
Ester 5~25%, (methyl) butyl acrylate 3~20%, (methyl) acrylic acid 2~6% and self-crosslinking agent 2-10%, all monomers
Total amount be 100%；
The dosage of the deionized water is the 140% of the monomer gross mass；
The dosage of the emulsifier is the 4~10% of the monomer gross mass；
The dosage of the rear crosslinking agents, defoaming agent and wetting agent is respectively the 0.5~5% of the monomer gross mass, 0.05
~0.6% and 0.5~4%；
The dosage of the initiator is the 0.2~0.8% of the monomer gross mass；
In the initiator solution, the dosage of deionized water used is the 5~10% of the monomer gross mass, described to draw
The dosage for sending out agent is the 0.3~1% of the monomer gross mass.
In the above method, the water that the acrylic ester monomer of crosslinking agent, defoaming agent and wetting agent polymerize is added in preparation
Property styrene-acrylic emulsion includes: as the step of host agent
(1) styrene-acrylic emulsion is prepared: by the styrene of monomer, (methyl) ethyl acrylate, (methyl) methyl acrylate, (first
Base) butyl acrylate and (methyl) acrylic acid stirs 30min or more in emulsifying kettle；
(2) initiator solution is prepared, dissolution is sufficiently stirred in deionized water used in initiator solution and initiator
Initiator solution is made；
(3) deionized water of overall reaction is pumped into emulsifying kettle, the quality of deionized water is the monomer gross mass
90%, emulsifier and initiator is added, is warming up to 70~85 DEG C and carries out reaction pre-emulsion is made；
(4) pre-emulsion that step (3) makes is added drop-wise to respectively with the initiator solution made of step (2) and is reacted
In kettle, when being added drop-wise to initiator solution and having instilled the 2/3 of gross mass, self-crosslinking agent is added in pre-emulsion, continues to be added dropwise
Initiator solution, 85 DEG C of heat preservation 1h after being added dropwise；
(5) it is cooled to 50~60 DEG C after the completion of step (4), ammonium hydroxide is added and adjusts pH value to 6~8, rear crosslinking agents are added, disappear
Infusion and wetting agent stir 2h, cool down, discharging, and products therefrom is the waterborne styrene-acrylic emulsion for being used as host agent.
Adhesive of the invention overcomes deficiency of the current aqueous acrylic adhesives in boiling structure, using multiple friendship
It is coupled structure, and then has reached enough peel strengths and water resistance, and waterborne styrene-acrylic emulsion complies fully with environmental requirement, nothing is appointed
What organic solvent addition, it is green safe, and largely reduce material cost.
The embodiment of the present invention is specifically described in further detail below.
Embodiment 1
The present embodiment provides a kind of preparation method of bi-component waterborne styrene-acrylic emulsion adhesive that can be used for boiling packaging, packets
Include host agent and curing agent, wherein host agent preparation the specific process steps are as follows:
It prepares phenylpropyl alcohol pre-emulsion: weighing each monomer, emulsifier and deionized water, the mass percentage of each monomer are as follows: benzene
Ethylene 10%, ethyl acrylate 55%, methyl acrylate 20%, butyl acrylate 5%, hydroxy-ethyl acrylate 5%, acrylic acid
2% and as self-crosslinking agent acetoacetoxyethyl methacrylate 3%, deionized water dosage is all monomer gross mass
50%, emulsifier is the 2% of all monomer gross mass, will remove all monomers and emulsifier and deionization of self-crosslinking agent
Water mixes in reaction kettle, high-speed stirred emulsification, 30min or more；
Initiator solution is prepared, weighs deionized water and initiator, the dosage of deionized water and initiator is respectively institute
There is the 10% and 0.4% of monomer gross mass, dissolution is sufficiently stirred；
Deionized water is pumped into the reaction kettle, deionized water dosage is the 90% of monomer gross mass, emulsifier is added,
Emulsifier is the 3% of monomer gross mass, and initiator is added, and initiator amount is the 0.3% of monomer gross mass, is warming up to 70
Phenylpropyl alcohol pre-emulsion is made in~85 DEG C of reactions；
Initiator solution is added dropwise in the phenylpropyl alcohol pre-emulsion made into the reaction kettle, is being added dropwise to initiator solution
Gross mass 2/3 when, by the acetoacetoxyethyl methacrylate as self-crosslinking agent be added reaction kettle in pre-emulsion in,
Continue that remaining initiator solution is added dropwise, 85 DEG C of heat preservation 1h after being added dropwise；
It is cooled to 50 DEG C after heat preservation, ammonium hydroxide is added and adjusts pH value to 6, rear crosslinking agents are added (using with polyhydroxylated molecule amount
Polyalcohol for 300), defoaming agent and wetting agent, their dosage be respectively 0.5%, 0.4% and the 4% of monomer gross mass, stir
2h is mixed, is cooled down, discharging, products therefrom is the waterborne styrene-acrylic emulsion for being used as host agent；
Curing agent use solid content for 80% Isocyanates curing agent；
In use, host agent and two component of curing agent 100:1.5 in mass ratio are uniformly mixed.
Film laminated, composite construction PET/AL/PE are carried out using uniformly mixed adhesive, spread is 2.0~
2.6g/m2, 50 DEG C cure 8 hours, test intensity.100 DEG C boiling 30 minutes, test intensity, specific structure see the table below:
| Structure | Intensity N/15mm before boiling | Intensity N/15mm after boiling |
| PET/AL | 2.8~4.0 | 2.5~3.8 |
| AL/PE | 2.5~3.5 | 2.5~3.3 |
Embodiment 2
The present embodiment provides a kind of preparation methods of bi-component waterborne styrene-acrylic emulsion adhesive that can be used for boiling packaging, divide
For host agent and curing agent, wherein host agent preparation the specific process steps are as follows:
It prepares phenylpropyl alcohol pre-emulsion: weighing each monomer, emulsifier and deionized water, the mass percentage of each monomer are as follows: benzene
Ethylene 15%, ethyl acrylate 63%, methyl methacrylate 5%, butyl acrylate 5%, hydroxy-ethyl acrylate 2%, propylene
The different monooctyl ester 3% of acid, acrylic acid 3% and the Diacetone Acrylamide 4% as self-crosslinking agent, deionized water dosage are all monomers
The 50% of gross mass, the dosage of emulsifier are the 2% of all monomer gross mass, will remove each monomer of monomer and cream of self-crosslinking agent
Agent and deionized water mix in reaction kettle, high-speed stirred emulsification, 30min or more；
Initiator solution is prepared, weighs deionized water and initiator, the dosage of deionized water and initiator is respectively institute
There is the 10% and 0.4% of monomer gross mass, dissolution is sufficiently stirred；
It is pumped into deionized water to the reaction kettle, deionized water dosage is the 90% of all monomer gross mass, and emulsification is added
Agent, emulsifier are the 3% of monomer gross mass, and initiator is added, and the dosage of initiator is the 0.3% of monomer gross mass, are risen
Phenylpropyl alcohol pre-emulsion is made in temperature to 70~85 DEG C of reactions；
Initiator solution is added dropwise in the phenylpropyl alcohol pre-emulsion made into reaction kettle, is being added dropwise to the total matter of initiator solution
Amount 2/3 when, by the Diacetone Acrylamide as self-crosslinking agent be added phenylpropyl alcohol pre-emulsion, continue that remaining initiator is added dropwise
Aqueous solution, 85 DEG C of heat preservation 1h after being added dropwise；
Heat preservation is cooled to 50 DEG C after the completion, and ammonium hydroxide is added and adjusts pH value to 6.5, rear crosslinking agents are added (using with hydroxyl
The polyalcohol that molecular weight is 300), defoaming agent and wetting agent, the dosage of rear crosslinking agents, defoaming agent and wetting agent be respectively all lists
0.3%, 0.2% and the 4% of body gross mass stirs 2h, cools down, discharging, and products therefrom is the aqueous phenylpropyl alcohol cream for being used as host agent
Liquid；
Curing agent use solid content for 90% Isocyanates curing agent；
In use, host agent, two component of curing agent 100:1.5 in mass ratio are uniformly mixed.
Film laminated, composite construction PET/AL/PE are carried out using uniformly mixed adhesive, spread is 2.0~
2.6g/m2, 50 DEG C cure 8 hours, test intensity.100 DEG C boiling 30 minutes, test intensity, specific structure see the table below:
| Structure | Intensity N/15mm before boiling | Intensity N/15mm after boiling |
| PET/AL | 2.6~4.0 | 2.5~3.8 |
| AL/PE | 2.4~3.3 | 2.2~3.3 |
It can be seen from above-described embodiment that waterborne styrene-acrylic emulsion adhesive of the invention, is used for PET/AL/PE composite junction
When structure, intensity and Strength Changes very little after boiling, have good water resistance and preferable peel strength before boiling.
The present invention is using styrene, (methyl) acrylate monomer and cross-linking monomer as raw material, using emulsion polymerisation process, system
It is standby go out the waterborne styrene-acrylic emulsion containing self-crosslinking structure, the later period using when curing agent be added be prepared into two component adhesive, it is multiple
Crosslinking ensures later period water-fast test passes, and peel strength hardly declines after boiling.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of bi-component waterborne styrene-acrylic emulsion adhesive for boiling packaging characterized by comprising host agent and solidification
Agent；Wherein,
The host agent is the aqueous phenylpropyl alcohol cream for adding the acrylic ester monomer of crosslinking agent, defoaming agent and wetting agent and polymerizeing
Liquid；
The curing agent is Isocyanates curing agent；
The mass ratio when host agent and two component of curing agent are used in mixed way is 100:1.5.
2. the bi-component waterborne styrene-acrylic emulsion adhesive according to claim 1 for boiling packaging, which is characterized in that institute
State host agent waterborne styrene-acrylic emulsion include: monomer, self-crosslinking agent, deionized water, emulsifier, initiator, initiator solution, after
Crosslinking agent, defoaming agent and wetting agent；
Wherein, the monomer includes: styrene 10~40%, (methyl) ethyl acrylate 50~85%, (methyl) acrylic acid first
Ester 5~25%, (methyl) butyl acrylate 3~20%, (methyl) acrylic acid 2~6% and self-crosslinking agent 2~10%, Suo Youdan
The total amount of body is 100%；
The dosage of the deionized water is the 140% of the monomer gross mass；
The dosage of the emulsifier is the 4~10% of the monomer gross mass；
The dosage of the initiator is the 0.2~0.8% of the monomer gross mass；
In the initiator solution, the dosage of deionized water used is the 5~10% of the monomer gross mass, the initiator
Dosage be the monomer gross mass 0.3~1%；
The dosage of the rear crosslinking agents, defoaming agent and wetting agent is respectively the 0.5~5% of the monomer gross mass, 0.05~
0.6% and 0.5~4%.
3. the bi-component waterborne styrene-acrylic emulsion adhesive according to claim 2 for boiling packaging, which is characterized in that institute
State monomer further include: (methyl) hydroxy-ethyl acrylate 0.1~5% and Isooctyl acrylate monomer 0.1~5%.
4. the bi-component waterborne styrene-acrylic emulsion adhesive according to claim 2 for boiling packaging, which is characterized in that institute
State self-crosslinking agent are as follows: the positive fourth of Diacetone Acrylamide, acetoacetoxyethyl methacrylate, N- (different) oxygroup methacryl
At least one of amine, glycidyl methacrylate, adipic dihydrazide.
5. the bi-component waterborne styrene-acrylic emulsion adhesive according to claim 2 for boiling packaging, which is characterized in that
The initiator uses potassium peroxydisulfate or ammonium persulfate；
The rear crosslinking agents, which use, has polyhydroxylated molecule amount as 300~1500 polyalcohol；
The defoaming agent uses mineral oil defoaming agent or organic silicon defoaming agent；
The wetting agent uses organic silicon or organic-silicon-modified class wetting agent.
6. the bi-component waterborne styrene-acrylic emulsion adhesive according to any one of claims 2 to 5 for boiling packaging, special
Sign is that the waterborne styrene-acrylic emulsion of the host agent is made in the following manner, comprising:
(1) phenylpropyl alcohol pre-emulsion is prepared: by styrene, (methyl) ethyl acrylate, (methyl) methyl acrylate, (first in monomer
Base) it butyl acrylate and (methyl) acrylic acid and accounts for the emulsifier of all monomer gross mass 2%~5% and accounts for the total matter of all monomers
The deionized water of amount 50% stirs 30min or more in reaction kettle；
(2) initiator solution is prepared, dissolution is sufficiently stirred in deionized water used in initiator solution and initiator and is made
Initiator solution；
(3) deionized water is pumped into Xiang Suoshu reaction kettle, the quality of deionized water is the 90% of the monomer gross mass, and addition is drawn
Agent and remaining emulsifier are sent out, 70~85 DEG C is warming up to and carries out reaction phenylpropyl alcohol pre-emulsion is made；
(4) initiator solution made of a dropping step (2) in the reaction kettle of phenylpropyl alcohol pre-emulsion is made to step (3), when
When being added dropwise to the 2/3 of the initiator solution gross mass, self-crosslinking agent is added in the phenylpropyl alcohol pre-emulsion of reaction kettle, is continued
Remaining initiator solution is added dropwise, 85 DEG C of heat preservation 1h after being added dropwise；
(5) 50~60 DEG C are cooled to after the completion of step (4) heat preservation, ammonium hydroxide is added and adjusts pH value to 6~8, rear crosslinking agents are added, disappear
Infusion and wetting agent stir 2h, cool down, discharging, and products therefrom is the waterborne styrene-acrylic emulsion for being used as host agent.
7. the bi-component waterborne styrene-acrylic emulsion adhesive according to any one of claims 1 to 5 for boiling packaging, special
Sign is, in described adhesive, the solid content of the Isocyanates curing agent as curing agent is 75~100%.
8. a kind of preparation method of the bi-component waterborne styrene-acrylic emulsion adhesive for boiling packaging, which is characterized in that for making
The standby described in any item bi-component waterborne styrene-acrylic emulsion adhesives of claim 1 to 7, comprising the following steps:
The waterborne styrene-acrylic emulsion that the acrylic ester monomer of preparation addition crosslinking agent, defoaming agent and wetting agent polymerize is as master
Agent, using Isocyanates curing agent as curing agent, in use, host agent is mixed with two constituent mass ratio of curing agent for 100:1.5
It closes and uniformly obtains the bi-component waterborne styrene-acrylic emulsion adhesive.
9. the preparation method of the bi-component waterborne styrene-acrylic emulsion adhesive according to claim 8 for boiling packaging,
It is characterized in that, in the method, preparing waterborne styrene-acrylic emulsion as component used in host agent includes:
Monomer, self-crosslinking agent, deionized water, emulsifier, initiator, initiator solution, rear crosslinking agents, defoaming agent and wetting
Agent；Wherein, the monomer includes: styrene 10~40%, (methyl) ethyl acrylate 50~85%, (methyl) methyl acrylate
5~25%, (methyl) butyl acrylate 3~20%, (methyl) acrylic acid 2~6% and self-crosslinking agent 2-10%, all monomers
Total amount is 100%；
The quality of the deionized water is the 50% of the monomer gross mass；
The quality of the emulsifier is the 4~10% of the monomer gross mass；
The quality of the rear crosslinking agents, defoaming agent and wetting agent is respectively the 0.5~5% of the monomer gross mass, 0.05~
0.6% and 0.5~4%；
The quality of the initiator is the 0.2~0.8% of the monomer gross mass；
In the initiator solution, the quality of deionized water used is the 5~10% of the monomer gross mass, the initiator
Quality be the monomer gross mass 0.3~1%.
10. the preparation method of the bi-component waterborne styrene-acrylic emulsion adhesive according to claim 9 for boiling packaging,
It is characterized in that, in the method, the water that the acrylic ester monomer of crosslinking agent, defoaming agent and wetting agent polymerize is added in preparation
Property styrene-acrylic emulsion includes: as the step of host agent
(1) phenylpropyl alcohol pre-emulsion is prepared: by styrene, (methyl) ethyl acrylate, (methyl) methyl acrylate, (first in monomer
Base) it butyl acrylate and (methyl) acrylic acid and accounts for the emulsifier of all monomer gross mass 2%~4% and accounts for the total matter of all monomers
The deionized water of amount 50% stirs 30min or more in reaction kettle；
(2) initiator solution is prepared, dissolution is sufficiently stirred in deionized water used in initiator solution and initiator and is made
Initiator solution；
(3) deionized water is pumped into Xiang Suoshu reaction kettle, the quality of deionized water is the 90% of the monomer gross mass, and addition is drawn
Agent and remaining emulsifier are sent out, 70~85 DEG C is warming up to and carries out reaction phenylpropyl alcohol pre-emulsion is made；
(4) initiator solution made of a dropping step (2) in the reaction kettle of phenylpropyl alcohol pre-emulsion is made to step (3), when
When being added dropwise to the 2/3 of the initiator solution gross mass, self-crosslinking agent is added in the phenylpropyl alcohol pre-emulsion of reaction kettle, is continued
Remaining initiator solution is added dropwise, 85 DEG C of heat preservation 1h after being added dropwise；
(5) 50~60 DEG C are cooled to after the completion of step (4) heat preservation, ammonium hydroxide is added and adjusts pH value to 6~8, rear crosslinking agents are added, disappear
Infusion and wetting agent stir 2h, cool down, discharging, and products therefrom is the waterborne styrene-acrylic emulsion for being used as host agent.
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