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CN107652935A - Replied immediately for high machine and close bi-component waterborne acrylic ester adhesive and preparation method thereof - Google Patents

Replied immediately for high machine and close bi-component waterborne acrylic ester adhesive and preparation method thereof Download PDF

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Publication number
CN107652935A
CN107652935A CN201711104979.7A CN201711104979A CN107652935A CN 107652935 A CN107652935 A CN 107652935A CN 201711104979 A CN201711104979 A CN 201711104979A CN 107652935 A CN107652935 A CN 107652935A
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component
monomers
total mass
initiator
mass
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骆新然
赫长生
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NANTONG GAOMENG NEW MATERIAL CO Ltd
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NANTONG GAOMENG NEW MATERIAL CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10Esters
    • C08F220/12Esters of monohydric alcohols or phenols
    • C08F220/16Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18Esters 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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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses a kind of replied immediately for high machine to close bi-component waterborne acrylic ester adhesive and preparation method thereof, and the adhesive is made up of component A and B component, and wherein component A is prepared and included:Emulsion synthesizes, the step such as compounding debugging;B component use solid content for 75~100% Isocyanates curing agent.The present invention uses emulsion polymerisation process, later stage compounding debugging formula.By A, B component in mass ratio 50 during use:1 is well mixed.The aqueous binder replies immediately conjunction, high initial bonding strength available for high machine, and lower machine can be cut at once, the service cycle of shortening, reduces cost, water-based adhesive, the addition of zero solvent is green, has the great market advantage.

Description

Double-component water-based acrylate adhesive for high-machine-speed compounding and preparation method thereof
Technical Field
The invention relates to the field of adhesives, in particular to a high-machine-speed composite bi-component water-based acrylate adhesive and a preparation method thereof.
Background
With the increasing environmental protection, the emission of VOC in the production and use processes of the solvent-based adhesives causes serious pollution to the environment. The commonly used water-based acrylate emulsion is mostly single-component, has low strength and single composite structure, and limits the application range. In addition, most of the existing water-based acrylate adhesives have the defects of more foams, incapability of compounding at high machine speed, poor appearance and the like.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a high-machine-speed composite bi-component water-based acrylate adhesive and a preparation method thereof, which can solve the problems that the existing water-based adhesive has more foams at high machine speed and can not run at high speed.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides a high-machine-speed composite double-component water-based acrylate adhesive, which is prepared from the following components in parts by weight of 50: 1, component A and component B: wherein,
the component A is a bi-component water-based acrylate adhesive;
and the component B adopts an isocyanate curing agent with the solid content of 75-100%.
The embodiment of the invention also provides a preparation method of the high-machine-speed composite two-component water-based acrylate adhesive, which is characterized in that the preparation method of the high-machine-speed composite two-component water-based acrylate adhesive comprises the following steps:
step 1, preparing a pre-emulsion: mixing and stirring 100% of acrylate monomer, 20% of deionized water and 2-5% of emulsifier for at least 30min to obtain pre-emulsion, wherein the total mass of the monomer is 100%;
step 2, preparing an initiator aqueous solution, weighing deionized water and an initiator, and fully stirring and dissolving to prepare the initiator aqueous solution, wherein the mass of the deionized water is 10% of the total mass of the monomers in the step 1, and the mass of the initiator is 0.2-0.8% of the total mass of the monomers in the step 1;
step 3, pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30% of the total mass of the monomers in the step 1, adding an emulsifier with the amount of 2-5% of the total mass of the monomers in the step 1, adding an initiator with the amount of 0.3-1% of the total mass of the monomers in the step 1, and heating to 70-85 ℃;
step 4, respectively dripping the pre-emulsion prepared in the step 1 and the initiator aqueous solution prepared in the step 2 into the reaction kettle in the step 3, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping;
step 5, cooling the reaction kettle to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the dosage of the cross-linking agent, the defoaming agent and the wetting agent is respectively 0.05-0.5%, 0.2-0.6% and 1-4% of the total mass of the monomers in the step 1, stirring for 2 hours, cooling, discharging, and obtaining a product, namely the bi-component water-based acrylate adhesive serving as the component A;
the component B adopts an isocyanate curing agent with the solid content of 75-100%;
when in use, A, B comprises the following two components in a mass ratio of 50: 1, and then uniformly mixing to obtain the preparation method of the high-machine-speed composite bi-component water-based acrylate adhesive.
According to the technical scheme provided by the invention, the double-component water-based acrylate adhesive for high-machine-speed composite and the preparation method thereof provided by the embodiment of the invention have the beneficial effects that:
the special double-component water-based acrylate adhesive is used as a component A, an isocyanate curing agent with the solid content of 75-100% is used as a component B, the double-component water-based acrylate adhesive is prepared by polymerizing an acrylate monomer to obtain an emulsion and adding a cross-linking agent, a defoaming agent and a wetting agent, and the double-component water-based acrylate adhesive is mixed with the component B for use.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The embodiment of the invention provides a high-machine-speed composite bi-component water-based acrylate adhesive, which is prepared from the following components in parts by weight of 50: 1, component A and component B: wherein,
the component A is a bi-component water-based acrylate adhesive;
and the component B adopts an isocyanate curing agent with the solid content of 75-100%.
In the adhesive, the component A adopts a two-component water-based acrylate adhesive prepared by the following method, and comprises the following steps:
step 1, preparing a pre-emulsion: mixing and stirring 100% of acrylate monomer, 20% of deionized water and 2-5% of emulsifier for at least 30min to obtain pre-emulsion, wherein the total mass of the monomer is 100%;
step 2, preparing an initiator aqueous solution, weighing deionized water and an initiator, and fully stirring and dissolving to prepare the initiator aqueous solution, wherein the mass of the deionized water is 10% of the total mass of the monomers in the step 1, and the mass of the initiator is 0.2-0.8% of the total mass of the monomers in the step 1;
step 3, pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30% of the total mass of the monomers in the step 1, adding an emulsifier with the amount of 2-5% of the total mass of the monomers in the step 1, adding an initiator with the amount of 0.3-1% of the total mass of the monomers in the step 1, and heating to 70-85 ℃;
step 4, respectively dripping the pre-emulsion prepared in the step 1 and the initiator aqueous solution prepared in the step 2 into the reaction kettle in the step 3, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping;
and 5, cooling the reaction kettle to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the dosage of the cross-linking agent, the defoaming agent and the wetting agent is 0.05-0.5%, 0.2-0.6% and 1-4% of the total mass of the monomers in the step 1 respectively, stirring for 2 hours, cooling, discharging, and obtaining a product, namely the bi-component water-based acrylate adhesive serving as the component A.
The acrylate monomer in the step 1 consists of the following monomers:
50-85% of ethyl methacrylate or ethyl acrylate, 5-25% of methyl methacrylate or methyl acrylate, 3-20% of butyl methacrylate or butyl acrylate and 2-6% of methacrylic acid or acrylic acid.
The emulsifier in the component A is sodium dodecyl sulfate or sodium dodecyl sulfate;
the initiator in the step 2 is potassium persulfate or ammonium persulfate;
the cross-linking agent in the step 5 is polyhydric alcohol with hydroxyl;
the defoaming agent in the step 5 is a mineral oil defoaming agent;
the wetting agent in the step 5 is an organic silicon or organic silicon modified defoaming agent.
The embodiment of the invention also provides a preparation method of the high-machine-speed composite double-component water-based acrylate adhesive, which is characterized by comprising the following steps of:
step 1, preparing a pre-emulsion: mixing and stirring 100% of acrylate monomer, 20% of deionized water and 2-5% of emulsifier for at least 30min to obtain pre-emulsion, wherein the total mass of the monomer is 100%;
step 2, preparing an initiator aqueous solution, weighing deionized water and an initiator, and fully stirring and dissolving to prepare the initiator aqueous solution, wherein the mass of the deionized water is 10% of the total mass of the monomers in the step 1, and the mass of the initiator is 0.2-0.8% of the total mass of the monomers in the step 1;
step 3, pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30% of the total mass of the monomers in the step 1, adding an emulsifier with the amount of 2-5% of the total mass of the monomers in the step 1, adding an initiator with the amount of 0.3-1% of the total mass of the monomers in the step 1, and heating to 70-85 ℃;
step 4, respectively dripping the pre-emulsion prepared in the step 1 and the initiator aqueous solution prepared in the step 2 into the reaction kettle in the step 3, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping;
step 5, cooling the reaction kettle to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the dosage of the cross-linking agent, the defoaming agent and the wetting agent is respectively 0.05-0.5%, 0.2-0.6% and 1-4% of the total mass of the monomers in the step 1, stirring for 2 hours, cooling, discharging, and obtaining a product, namely the bi-component water-based acrylate adhesive serving as the component A;
the component B adopts an isocyanate curing agent with the solid content of 75-100%;
when in use, A, B comprises the following two components in a mass ratio of 50: 1, and then uniformly mixing to obtain the preparation method of the high-machine-speed composite bi-component water-based acrylate adhesive.
The acrylate monomer in step 1 of the preparation method consists of the following monomers:
50-85% of ethyl methacrylate or ethyl acrylate, 5-25% of methyl methacrylate or methyl acrylate, 3-20% of butyl methacrylate or butyl acrylate and 2-6% of methacrylic acid or acrylic acid.
In the preparation method, the emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfate;
in step 2 of the preparation method, the initiator is potassium persulfate or ammonium persulfate;
in step 5 of the above preparation method, the crosslinking agent is a polyol having a hydroxyl group;
in the step 5 of the preparation method, the defoaming agent is a mineral oil defoaming agent;
in step 5 of the above preparation method, the wetting agent is an organic silicon or organic silicon modified defoaming agent.
The bi-component water-based acrylate adhesive disclosed by the invention has the advantages of low foam, high composite strength, convenience in use, wide bonding surface, high drying speed, good transparency and the like due to the fact that the component A prepared by adding the cross-linking agent, the defoaming agent and the wetting agent into the emulsion obtained by polymerizing the acrylate monomers is matched with the component B of the isocyanate curing agent with the solid content of 75-100%, and the bi-component water-based acrylate adhesive well solves the problems that the existing water-based adhesive has more foams at high machine speed and cannot run at high speed,
the embodiments of the present invention are described in further detail below.
The embodiment provides a preparation method of a bi-component water-based acrylate adhesive for high-speed compounding, which comprises the steps of firstly preparing an acrylate emulsion as a component A by an emulsion polymerization method, and then fully mixing the component A and the component B of the prepared emulsion to obtain the adhesive for coating and compounding.
The method for preparing the A-component and the binder will be explained below.
The specific preparation process of the component A comprises the following steps:
(1) preparing a pre-emulsion, weighing a monomer, an emulsifier and deionized water, and mixing, wherein the mass percentage of each monomer is as follows: 50-85% of ethyl (meth) acrylate, 5-25% of methyl (meth) acrylate, 3-20% of butyl (meth) acrylate, 2-6% of acrylic acid, 100% of the total amount of the monomers, 20% of deionized water by mass, 2-5% of an emulsifier by mass, stirring at high speed and emulsifying for more than 30 min.
(2) Preparing an initiator aqueous solution, weighing deionized water and an initiator, wherein the mass of the deionized water and the mass of the initiator are respectively 10 percent and 0.2-0.8 percent of the total mass of the monomers, and fully stirring for dissolving.
(3) Pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30 percent of the total mass of the monomers, adding an emulsifier, the mass of the emulsifier is 2 to 5 percent of the total mass of the monomers, adding an initiator, the mass of the initiator is 0.3 to 1 percent of the total mass of the monomers, and heating to 70 to 85 ℃.
(4) And respectively dripping the prepared pre-emulsion and an initiator aqueous solution into the reaction kettle, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping.
(5) Cooling to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the mass of the cross-linking agent, the defoaming agent and the wetting agent is 0.05-0.5%, 0.2-0.6% and 1-4% of the total mass of the monomers respectively, stirring for 2h, cooling and discharging.
(6) When in use, A, B comprises the following two components in a mass ratio of 50: 1, mixing uniformly.
In the method, the acrylic ester monomer is ethyl methacrylate or ethyl acrylate, methyl methacrylate or methyl acrylate, butyl methacrylate or butyl acrylate, methacrylic acid or acrylic acid.
In the method, the total amount of the emulsifier is 4-10%, and the total amount of the initiator is 0.5-2%.
In the method, the emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfate.
In the method, the initiator is potassium persulfate or ammonium persulfate.
In the method, the cross-linking agent is polyol with hydroxyl.
In the method, the defoaming agent is a mineral oil defoaming agent.
In the method, the wetting agent is an organic silicon or organic silicon modified defoaming agent.
In the method, the component B is isocyanate curing agent, and the solid content is 75-100%.
Example 1
The embodiment provides a preparation method of a bi-component acrylate composite adhesive, which can be used for preparing a total adhesive with the characteristics of high machine speed compounding, excellent bonding strength, convenience in use, wide bonding surface, high drying speed, good transparency and the like, wherein the adhesive is divided into A, B components, a component A is prepared firstly, and the preparation process specifically comprises the following steps:
preparing a pre-emulsion, weighing a monomer, an emulsifier and deionized water, and mixing, wherein the mass percentage of each monomer is as follows: 70% of ethyl acrylate, 23% of methyl acrylate, 5% of butyl acrylate, 2% of acrylic acid, 20% of deionized water by mass of the monomer, 2% of emulsifier by mass of the total mass of the monomer, and stirring and emulsifying at high speed for more than 30 min.
Preparing an initiator aqueous solution, weighing deionized water and an initiator, wherein the mass of the deionized water and the mass of the initiator are respectively 10% and 0.4% of the total mass of the monomers, and fully stirring and dissolving.
Pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30 percent of the total mass of the monomers, adding an emulsifier, the mass of the emulsifier is 4 percent of the total mass of the monomers, adding an initiator, the mass of the initiator is 0.3 percent of the total mass of the monomers, and heating to 70-85 ℃.
And respectively dripping the prepared pre-emulsion and an initiator aqueous solution into the reaction kettle, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping.
Cooling to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the mass of the cross-linking agent, the mass of the defoaming agent and the mass of the wetting agent are respectively 0.2 percent and 0.3 percent and 1 percent of the total mass of the monomers, stirring for 2 hours, cooling and discharging.
When in use, A, B comprises the following two components in a mass ratio of 50: 1, mixing uniformly.
Example 2
The embodiment provides a preparation method of a bi-component acrylate composite adhesive, which can be used for preparing a total adhesive with the characteristics of high machine speed compounding, excellent bonding strength, convenience in use, wide bonding surface, high drying speed, good transparency and the like, wherein the adhesive is divided into A, B components, a component A is prepared firstly, and the preparation process specifically comprises the following steps:
preparing a pre-emulsion, weighing a monomer, an emulsifier and deionized water, and mixing, wherein the mass percentage of each monomer is as follows: 75% of ethyl acrylate, 15% of methyl methacrylate, 6% of butyl acrylate, 4% of acrylic acid, 20% of deionized water by mass of the monomer, 2% of emulsifier by mass of the total mass of the monomer, and stirring and emulsifying at high speed for more than 30 min.
Preparing an initiator aqueous solution, weighing deionized water and an initiator, wherein the mass of the deionized water and the mass of the initiator are respectively 10% and 0.4% of the total mass of the monomers, and fully stirring and dissolving.
Pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30 percent of the total mass of the monomers, adding an emulsifier, the mass of the emulsifier is 3 percent of the total mass of the monomers, adding an initiator, the mass of the initiator is 0.3 percent of the total mass of the monomers, and heating to 70-85 ℃.
And respectively dripping the prepared pre-emulsion and an initiator aqueous solution into the reaction kettle, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping.
Cooling to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the mass of the cross-linking agent, the mass of the defoaming agent and the mass of the wetting agent are respectively 0.3 percent and 1 percent of the total mass of the monomers, stirring for 2 hours, cooling and discharging.
When in use, A, B comprises the following two components in a mass ratio of 50: 1, mixing uniformly.
Example 3
The embodiment provides a preparation method of a bi-component acrylate composite adhesive, which can be used for preparing a total adhesive with the characteristics of high machine speed compounding, excellent bonding strength, convenience in use, wide bonding surface, high drying speed, good transparency and the like, wherein the adhesive is divided into A, B components, a component A is prepared firstly, and the preparation process specifically comprises the following steps:
preparing a pre-emulsion, weighing a monomer, an emulsifier and deionized water, and mixing, wherein the mass percentage of each monomer is as follows: 85% of ethyl acrylate, 10% of methyl methacrylate, 3% of butyl methacrylate, 2% of acrylic acid, 20% of deionized water by mass of the monomers, 3% of an emulsifier by mass of the total monomers, and stirring and emulsifying at high speed for more than 30 min.
Preparing an initiator aqueous solution, weighing deionized water and an initiator, wherein the mass of the deionized water and the mass of the initiator are respectively 10% and 0.4% of the total mass of the monomers, and fully stirring and dissolving.
Pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30 percent of the total mass of the monomers, adding an emulsifier, the mass of the emulsifier is 4 percent of the total mass of the monomers, adding an initiator, the mass of the initiator is 0.3 percent of the total mass of the monomers, and heating to 70-85 ℃.
And respectively dripping the prepared pre-emulsion and an initiator aqueous solution into the reaction kettle, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping.
Cooling to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the mass of the cross-linking agent, the mass of the defoaming agent and the mass of the wetting agent are respectively 0.2 percent, 0.5 percent and 4 percent of the total mass of the monomers, stirring for 2 hours, cooling and discharging.
When in use, A, B comprises the following two components in a mass ratio of 50: 1, mixing uniformly.
Example 4
The embodiment provides a preparation method of a bi-component acrylate composite adhesive, which can be used for preparing a total adhesive with the characteristics of high machine speed compounding, excellent bonding strength, convenience in use, wide bonding surface, high drying speed, good transparency and the like, wherein the adhesive is divided into A, B components, a component A is prepared firstly, and the preparation process specifically comprises the following steps:
preparing a pre-emulsion, weighing a monomer, an emulsifier and deionized water, and mixing, wherein the mass percentage of each monomer is as follows: 60% of ethyl acrylate, 20% of methyl methacrylate, 17% of butyl acrylate, 3% of acrylic acid, 20% of deionized water by mass of the monomer, 2% of emulsifier by mass of the total mass of the monomer, and stirring and emulsifying at high speed for more than 30 min.
Preparing an initiator aqueous solution, weighing deionized water and an initiator, wherein the mass of the deionized water and the mass of the initiator are respectively 10% and 0.3% of the total mass of the monomers, and fully stirring and dissolving.
Pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30 percent of the total mass of the monomers, adding an emulsifier, the mass of the emulsifier is 4 percent of the total mass of the monomers, adding an initiator, the mass of the initiator is 0.2 percent of the total mass of the monomers, and heating to 70-85 ℃.
And respectively dripping the prepared pre-emulsion and an initiator aqueous solution into the reaction kettle, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping.
Cooling to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the mass of the cross-linking agent, the mass of the defoaming agent and the mass of the wetting agent are respectively 0.3 percent, 0.5 percent and 4 percent of the total mass of the monomers, stirring for 2 hours, cooling and discharging.
When in use, A, B comprises the following two components in a mass ratio of 50: 1, mixing uniformly.
The water-based adhesive prepared by the invention can be used for high-machine-speed compounding and high initial adhesion, can be immediately cut off when being taken off a machine, shortens the running period, reduces the cost, is a pure water-based adhesive, is free from solvent addition, is green and environment-friendly, and has great market advantages.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The two-component water-based acrylate adhesive for high-machine-speed compounding is characterized by comprising the following components in percentage by weight of 50: 1, component A and component B: wherein,
the component A is a bi-component water-based acrylate adhesive;
and the component B adopts an isocyanate curing agent with the solid content of 75-100%.
2. The two-component waterborne acrylate adhesive for high-speed compounding of claim 1, wherein the a component is a two-component waterborne acrylate adhesive prepared by:
step 1, preparing a pre-emulsion: mixing and stirring 100% of acrylate monomer, 20% of deionized water and 2-5% of emulsifier for at least 30min to obtain pre-emulsion, wherein the total mass of the monomer is 100%;
step 2, preparing an initiator aqueous solution, weighing deionized water and an initiator, and fully stirring and dissolving to prepare the initiator aqueous solution, wherein the mass of the deionized water is 10% of the total mass of the monomers in the step 1, and the mass of the initiator is 0.2-0.8% of the total mass of the monomers in the step 1;
step 3, pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30% of the total mass of the monomers in the step 1, adding an emulsifier with the amount of 2-5% of the total mass of the monomers in the step 1, adding an initiator with the amount of 0.3-1% of the total mass of the monomers in the step 1, and heating to 70-85 ℃;
step 4, respectively dripping the pre-emulsion prepared in the step 1 and the initiator aqueous solution prepared in the step 2 into the reaction kettle in the step 3, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping;
and 5, cooling the reaction kettle to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the dosage of the cross-linking agent, the defoaming agent and the wetting agent is 0.05-0.5%, 0.2-0.6% and 1-4% of the total mass of the monomers in the step 1 respectively, stirring for 2 hours, cooling, discharging, and obtaining a product, namely the bi-component water-based acrylate adhesive serving as the component A.
3. The two-component waterborne acrylate adhesive for high machine speed compounding of claim 2, wherein the acrylate monomers of step 1 are composed of the following monomers:
50-85% of ethyl methacrylate or ethyl acrylate, 5-25% of methyl methacrylate or methyl acrylate, 3-20% of butyl methacrylate or butyl acrylate and 2-6% of methacrylic acid or acrylic acid.
4. The two-component waterborne acrylate adhesive for high machine speed compounding according to claim 2 or 3, wherein the emulsifier is sodium dodecyl sulfate or sodium dodecyl sulfate;
the initiator in the step 2 is potassium persulfate or ammonium persulfate;
the cross-linking agent in the step 5 is polyhydric alcohol with hydroxyl;
the defoaming agent in the step 5 is a mineral oil defoaming agent;
the wetting agent in the step 5 is an organic silicon or organic silicon modified defoaming agent.
5. A preparation method of the two-component waterborne acrylate adhesive for high-machine-speed compounding is characterized by comprising the following steps of:
step 1, preparing a pre-emulsion: mixing and stirring 100% of acrylate monomer, 20% of deionized water and 2-5% of emulsifier for at least 30min to obtain pre-emulsion, wherein the total mass of the monomer is 100%;
step 2, preparing an initiator aqueous solution, weighing deionized water and an initiator, and fully stirring and dissolving to prepare the initiator aqueous solution, wherein the mass of the deionized water is 10% of the total mass of the monomers in the step 1, and the mass of the initiator is 0.2-0.8% of the total mass of the monomers in the step 1;
step 3, pumping deionized water into the reaction kettle, wherein the amount of the deionized water is 30% of the total mass of the monomers in the step 1, adding an emulsifier with the amount of 2-5% of the total mass of the monomers in the step 1, adding an initiator with the amount of 0.3-1% of the total mass of the monomers in the step 1, and heating to 70-85 ℃;
step 4, respectively dripping the pre-emulsion prepared in the step 1 and the initiator aqueous solution prepared in the step 2 into the reaction kettle in the step 3, finishing dripping within 2-3 hours, and preserving heat for 1 hour after finishing dripping;
step 5, cooling the reaction kettle to 50-60 ℃, adding ammonia water to adjust the pH value to 6-8, adding a cross-linking agent, a defoaming agent and a wetting agent, wherein the dosage of the cross-linking agent, the defoaming agent and the wetting agent is respectively 0.05-0.5%, 0.2-0.6% and 1-4% of the total mass of the monomers in the step 1, stirring for 2 hours, cooling, discharging, and obtaining a product, namely the bi-component water-based acrylate adhesive serving as the component A;
the component B adopts an isocyanate curing agent with the solid content of 75-100%;
when in use, A, B comprises the following two components in a mass ratio of 50: 1, and then uniformly mixing to obtain the preparation method of the high-machine-speed composite bi-component water-based acrylate adhesive.
6. The preparation method of the high-machine-speed composite two-component water-based acrylate adhesive according to claim 5, wherein the acrylate monomers in the step 1 are composed of the following monomers:
50-85% of ethyl methacrylate or ethyl acrylate, 5-25% of methyl methacrylate or methyl acrylate, 3-20% of butyl methacrylate or butyl acrylate and 2-6% of methacrylic acid or acrylic acid.
7. The method for preparing the high-machine-speed composite two-component water-based acrylate adhesive according to claim 5 or 6, wherein the emulsifier in the method is sodium dodecyl sulfate or sodium dodecyl sulfate;
the initiator in the step 2 is potassium persulfate or ammonium persulfate;
the cross-linking agent in the step 5 is polyhydric alcohol with hydroxyl;
the defoaming agent in the step 5 is a mineral oil defoaming agent;
the wetting agent in the step 5 is an organic silicon or organic silicon modified defoaming agent.
CN201711104979.7A 2017-11-10 2017-11-10 Replied immediately for high machine and close bi-component waterborne acrylic ester adhesive and preparation method thereof Pending CN107652935A (en)

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