CN109401712A - A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive and preparation method thereof - Google Patents
A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive and preparation method thereof Download PDFInfo
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- CN109401712A CN109401712A CN201811218404.2A CN201811218404A CN109401712A CN 109401712 A CN109401712 A CN 109401712A CN 201811218404 A CN201811218404 A CN 201811218404A CN 109401712 A CN109401712 A CN 109401712A
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3855—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur
- C08G18/3857—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur having nitrogen in addition to sulfur
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4202—Two or more polyesters of different physical or chemical nature
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/722—Combination of two or more aliphatic and/or cycloaliphatic polyisocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- 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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/06—Polyurethanes from polyesters
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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- C08G2170/00—Compositions for adhesives
- C08G2170/80—Compositions for aqueous adhesives
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Abstract
The invention discloses a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesives and preparation method thereof, pass through the main body using the polymer that isocyanates, polymer diatomic alcohol, small molecule polyol and chain extender are constituted as pressure sensitive adhesive, using deionized water as solvent, without containing organic solvents such as toluene, it is nontoxic and pollution-free, it is very environmentally friendly；It is additionally added chain extender, stabilizer, regulator and end-capping reagent simultaneously；Chain extender has selected the mixture of 8- amino naphthalenes -1,6- sodium disulfonate, bis- (the butyryl acyloxy) -2- butylene of 1,4- and N- tri- (methylol) methyl-3-aminopropanesulfonicacid acid sodium；It under the collective effect of these three substances, on the one hand can play the role of good chain extension, extend the length of polymer, and adjust the structure of polymer；Synergistic effect is played with polymer body simultaneously；Make pressure sensitive adhesive prepared by the present invention that there is certain temperature tolerance simultaneously；The tack of final pressure sensitive adhesive obtained is very strong, holds viscosity also very by force, expands the application range of waterborne polyurethane pressure-sensitive adhesives significantly.
Description
Technical field
The present invention relates to a kind of pressure sensitive adhesive, more particularly to a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive and its system
Preparation Method.
Background technique
Pressure sensitive adhesive is the abbreviation of pressure-sensitive adhesive, is a kind of adhesive for having and having sensibility to pressure, mainly
It is used to prepare pressure sensitive adhesive tape, effect is to have adhesive tape to pressure-sensitive adhesion characteristics.Pressure sensitive adhesive according to matrix resin at
Two class of rubber-type and resin type can be divided by being divided to.Rubber-type can be divided into natural rubber and synthetic rubber class again；Resin type is again main to be wrapped
Include acrylic compounds, organic silicon and polyurethanes.
Aqueous polyurethane (WPU) refer to polyurethane (PU) be dissolved in water or be dispersed in water and the stable emulsion that is formed, it with
Polyurethane resin is base-material, replaces organic solvent to make decentralized medium with water, becomes nowadays glue with nontoxic and pollution-free huge advantage
The important component of stick industry.The tack of existing waterborne polyurethane pressure-sensitive adhesives is mostly preferable, but pushing away with the time
It moves, the viscosity meeting sharp fall of waterborne polyurethane pressure-sensitive adhesives can not recur to the effect of bonding, limit its application.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive
And preparation method thereof, the tack of the pressure sensitive adhesive is very strong, when one section after still have stronger viscosity.
To achieve the above object, the present invention provides the following technical scheme that a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, packet
Include following parts by weight material composition:
15-30 parts of isocyanates；
30-70 parts of deionized water；
5-15 parts of polymer diatomic alcohol；
5-10 parts of small molecule polyol；
5-10 parts of chain extender；
1-3 parts of stabilizer；
2-5 parts of regulator；
1-3 parts of end-capping reagent；
The chain extender is 8- amino naphthalenes -1,6- sodium disulfonate, bis- (the butyryl acyloxy) -2- butylene of 1,4- and (the hydroxyl first of N- tri-
Base) methyl-3-aminopropanesulfonicacid acid sodium mixture, mass ratio 3:1:1.
As a further improvement of the present invention, the isocyanates is that isophorone diisocyanate, hexa-methylene two are different
At least one of cyanate and trimethyl hexamethylene diisocyanate.
As a further improvement of the present invention, the isocyanates is that isophorone diisocyanate, hexa-methylene two are different
The mixture of cyanate and trimethyl hexamethylene diisocyanate, mass ratio 7:2:1.
As a further improvement of the present invention, the polymer diatomic alcohol is polyoxypropyleneglycol, poly- allyl
Diethylene glycol (DEG) ester, azelaic acid-at least one of 1,2-PD polyester and polyethylene glycol succinate, the polymer diatomic alcohol
Number-average molecular weight be 2500-3500.
As a further improvement of the present invention, the small molecule polyol be Isosorbide-5-Nitrae butanediol, 3- γ-aminopropylsilane triol,
At least one of glycerine and pentaerythrite.
As a further improvement of the present invention, the stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) third
Alkene, 2- (dimethylamino) vinyl -3- pyridyl ketone and four (3,5- di-t-butyl -4- hydroxyl) benzenpropanoic acid pentaerythritol esters
Mixture, mass ratio 3:2:2.
As a further improvement of the present invention, the regulator is triethanolamine.
As a further improvement of the present invention, the end-capping reagent is diacetylmonoxime.
As a further improvement of the present invention, a kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, including it is following
Step:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 40-50 DEG C, preheating time 10-15min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 100-200rad/min；?
While stirring, is heated up with the heating rate of 1-2 DEG C/min, be warming up to 75-85 DEG C；It keeps temperature-resistant, reacts
30min obtains performed polymer；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 300-500rad/
The revolving speed of min is stirred, and reacts 60-90min；It adds regulator to be adjusted, regulating time 10-15min；Then it uses
End-capping reagent is blocked, the reaction was continued 15-30min, forms mixture；
Step 4: mixture obtained in step 3 is mixed with deionized water, is 200-400rad/ in revolving speed
20-30min is mixed under conditions of min, obtains aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Beneficial effects of the present invention: by being constituted with isocyanates, polymer diatomic alcohol, small molecule polyol and chain extender
Main body of the polymer as pressure sensitive adhesive, it is nontoxic and pollution-free without containing organic solvents such as toluene using deionized water as solvent,
It is very environmentally friendly；When preparing pressure sensitive adhesive, first polymer diatomic alcohol and isocyanates are respectively put into baking oven and carry out the pre-heat treatment,
Oven temperature is 40-50 DEG C；Then polymer diatomic alcohol and isocyanates are mixed again；The pre-heat treatment processing purpose be make it is different
Cyanate mixes more uniform with polymer diatomic alcohol, chemically reacts convenient for subsequent, generates longer segment；Then it is added
On the one hand small molecule polyol, small molecule polyol have more hydroxyl, hydrophilicity is good, convenient for the polymer of subsequent generation
It is mixed with water, lotion is formed, the other end is also used as the soft segment in polymer, so that long segment is not easy to knot, rises
To the effect for the structure for adjusting entire polymer molecule；It after small molecule polyol is added, heats up, when heating will slowly rise
Full, rate is preferably 1-2 DEG C/min, prevents heating rate too fast, and reaction is not enough between reactant, and the degree of polymerization is larger, together
When too fast heating also result in and knot between the segment of polymer and segment, be unable to get ideal product；It is warming up to 75-85
DEG C, it then keeps temperature-resistant, will sufficiently be reacted between polymer diatomic alcohol, isocyanates and small molecule polyol, formed
Performed polymer, the performed polymer formed in this way just have more good tack, preferably continue bonding effect.
Select preferred mass than the isophorone diisocyanate for 7:2:1, hexa-methylene in isocyanate reagents
The mixture of diisocyanate and trimethyl hexamethylene diisocyanate can play the role of adjusting entire polymer chain segment molecule；
Polymer diatomic alcohol is polyoxypropyleneglycol, poly- allyl diethylene glycol (DEG) ester, azelaic acid -1,2- propylene glycol are poly-
At least one of ester and polyethylene glycol succinate, preferred mass is than the polyoxypropyleneglycol and poly- allyl for 1:1
The mixture of base diethylene glycol (DEG) ester, the number-average molecular weight of the polymer diatomic alcohol are 2500-3500, same adjustable polymer
The effect of structure.
Under polymer diatomic alcohol and the preferred situation of isocyanates, synergy can produce, so that whole pressure sensitive adhesive
Tack and hold sticky further promoted.
After forming performed polymer, the reaction was continued for addition chain extender and stabilizer；Wherein chain extender, which plays, continues to extend segment
Purpose；As one of new wound point of the invention, 8- amino naphthalenes -1,6- sodium disulfonate, Isosorbide-5-Nitrae-have been selected in the selection of chain extender
The mixture of bis- (butyryl acyloxy) -2- butylene and N- tri- (methylol) methyl-3-aminopropanesulfonicacid acid sodium；In being total to for these three substances
It under same-action, on the one hand can play the role of good chain extension, extend the length of polymer, and adjust the structure of polymer；Together
When with polymer body play synergistic effect so that the viscosity of holding of pressure sensitive adhesive further increases；Simultaneously because wherein 8- amino naphthalenes-
1,6- sodium disulfonate and N- tri- (methylol) methyl-3-aminopropanesulfonicacid acid sodium are sulfonic acid type chain extender, introduce sulfonic acid group,
So that pressure sensitive adhesive prepared by the present invention has certain temperature tolerance；
As another new wound point of the invention, it joined a small amount of stabilizer, selected 1- methoxyl group-in stabilizer
2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) vinyl-3- pyridyl ketone and four (3,5- di-t-butyls-
4- hydroxyl) benzenpropanoic acid pentaerythritol ester mixture；Under the collective effect of these substances, stable work is on the one hand played
With the heat resistance of pressure sensitive adhesive being improved, so that application range of the invention is more preferable；On the other hand have between polymer body
There is preferable concertedness, further increase pressure sensitive adhesive holds viscosity；
Chain extender and stabilizer are added in reactor again, with other material mixings it is uniform after, add regulator, this hair
Bright middle regulator has selected triethanolamine, is on the one hand used for the pH value of regulation system, on the other hand for reconciling polymer body
With the compatibility between other function auxiliary agent so that the performance of integral material is better；Then with end-capping reagent to polymer body
It is blocked, forms mixture；The mixture is mixed with deionized water, forms aqueous polyurethane emulsion；It finally will be aqueous poly-
Urethane lotion applicator obtains pressure sensitive adhesive in film and drying.The tack of the pressure sensitive adhesive is very strong, holds viscosity also very by force, expands significantly
The big application range of waterborne polyurethane pressure-sensitive adhesives.
Specific embodiment
Embodiment 1:
A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, including following parts by weight material composition:
25 parts of isocyanates；
50 parts of deionized water；
10 parts of polymer diatomic alcohol；
8 parts of small molecule polyol；
6 parts of chain extender；
2 parts of stabilizer；
4 parts of regulator；
2 parts of end-capping reagent；
The chain extender is 8- amino naphthalenes -1,6- sodium disulfonate, bis- (the butyryl acyloxy) -2- butylene of 1,4- and (the hydroxyl first of N- tri-
Base) methyl-3-aminopropanesulfonicacid acid sodium mixture, mass ratio 3:1:1.
The isocyanates is isophorone diisocyanate, hexamethylene diisocyanate and the own diisocyanate of trimethyl
The mixture of ester, mass ratio 7:2:1.
The polymer diatomic alcohol is the mixture of polyoxypropyleneglycol and poly- allyl diethylene glycol (DEG) ester, quality
Than 1:1, the number-average molecular weight of the polymer diatomic alcohol is 2500-3500.
The small molecule polyol is the mixture of Isosorbide-5-Nitrae butanediol and 3- γ-aminopropylsilane triol, mass ratio 4:1.
The stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) ethylene
The mixture of base -3- pyridyl ketone and four (3,5- di-t-butyl -4- hydroxyl) benzenpropanoic acid pentaerythritol esters, mass ratio 3:2:
2。
The regulator is triethanolamine.
The end-capping reagent is diacetylmonoxime.
A kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 45 DEG C, preheating time 15min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 150rad/min；It is stirring
While, it is heated up with the heating rate of 1 DEG C/min, is warming up to 80 DEG C；It keeps temperature-resistant, reacts 30min, obtain pre-polymerization
Body；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 400rad/min
Revolving speed be stirred, react 75min；It adds regulator to be adjusted, regulating time 10min；Then with end-capping reagent into
Row sealing end, the reaction was continued 25min form mixture；Step 4: mixture obtained in step 3 is mixed with deionized water
It closes, mixes 25min under conditions of revolving speed is 300rad/min, obtain aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Embodiment 2:
A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, including following parts by weight material composition:
20 parts of isocyanates；
45 parts of deionized water；
8 parts of polymer diatomic alcohol；
6 parts of small molecule polyol；
5 parts of chain extender；
1 part of stabilizer；
2 parts of regulator；
1 part of end-capping reagent；
The chain extender is 8- amino naphthalenes -1,6- sodium disulfonate, bis- (the butyryl acyloxy) -2- butylene of 1,4- and (the hydroxyl first of N- tri-
Base) methyl-3-aminopropanesulfonicacid acid sodium mixture, mass ratio 3:1:1.
The isocyanates is isophorone diisocyanate, hexamethylene diisocyanate and the own diisocyanate of trimethyl
The mixture of ester, mass ratio 7:2:1.
The polymer diatomic alcohol is azelaic acid -1,2-PD polyester and polyethylene glycol succinate mixture,
Quality is 2:3, and the number-average molecular weight of the polymer diatomic alcohol is 2500-3500.
The small molecule polyol is glycerine.
The stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) ethylene
The mixture of base -3- pyridyl ketone and four (3,5- di-t-butyl -4- hydroxyl) benzenpropanoic acid pentaerythritol esters, mass ratio 3:2:
2。
The regulator is triethanolamine.
The end-capping reagent is diacetylmonoxime.
A kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 45 DEG C, preheating time 12min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 150rad/min；It is stirring
While, it is heated up with the heating rate of 1.5 DEG C/min, is warming up to 80 DEG C；It keeps temperature-resistant, reacts 30min, obtain pre-
Aggressiveness；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 400rad/min
Revolving speed be stirred, react 70min；It adds regulator to be adjusted, regulating time 10min；Then with end-capping reagent into
Row sealing end, the reaction was continued 20min form mixture；Step 4: mixture obtained in step 3 is mixed with deionized water
It closes, mixes 25min under conditions of revolving speed is 300rad/min, obtain aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Embodiment 3:
A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, including following parts by weight material composition:
30 parts of isocyanates；
70 parts of deionized water；
13 parts of polymer diatomic alcohol；
9 parts of small molecule polyol；
8 parts of chain extender；
3 parts of stabilizer；
5 parts of regulator；
3 parts of end-capping reagent；
The chain extender is 8- amino naphthalenes -1,6- sodium disulfonate, bis- (the butyryl acyloxy) -2- butylene of 1,4- and (the hydroxyl first of N- tri-
Base) methyl-3-aminopropanesulfonicacid acid sodium mixture, mass ratio 3:1:1.
The isocyanates is isophorone diisocyanate, hexamethylene diisocyanate and the own diisocyanate of trimethyl
The mixture of ester, mass ratio 7:2:1.
The polymer diatomic alcohol is the mixture of poly- allyl diethylene glycol (DEG) ester and polyethylene glycol succinate, matter
For amount than being 2:1, the number-average molecular weight of the polymer diatomic alcohol is 2500-3500.
The small molecule polyol is pentaerythrite.
The stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) ethylene
The mixture of base -3- pyridyl ketone and four (3,5- di-t-butyl -4- hydroxyl) benzenpropanoic acid pentaerythritol esters, mass ratio 3:2:
2。
The regulator is triethanolamine.
The end-capping reagent is diacetylmonoxime.
A kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 48 DEG C, preheating time 15min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 170rad/min；It is stirring
While, it is heated up with the heating rate of 1.5 DEG C/min, is warming up to 85 DEG C；It keeps temperature-resistant, reacts 30min, obtain pre-
Aggressiveness；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 500rad/min
Revolving speed be stirred, react 90min；It adds regulator to be adjusted, regulating time 15min；Then with end-capping reagent into
Row sealing end, the reaction was continued 30min form mixture；Step 4: mixture obtained in step 3 is mixed with deionized water
It closes, mixes 30min under conditions of revolving speed is 350rad/min, obtain aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Comparative example 1:
A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, including following parts by weight material composition:
25 parts of isocyanates；
50 parts of deionized water；
10 parts of polymer diatomic alcohol；
8 parts of small molecule polyol；
6 parts of chain extender；
2 parts of stabilizer；
4 parts of regulator；
2 parts of end-capping reagent；
The chain extender is 8- amino naphthalenes -1,6- sodium disulfonate.
The isocyanates is isophorone diisocyanate, hexamethylene diisocyanate and the own diisocyanate of trimethyl
The mixture of ester, mass ratio 7:2:1.
The polymer diatomic alcohol is the mixture of polyoxypropyleneglycol and poly- allyl diethylene glycol (DEG) ester, quality
Than 1:1, the number-average molecular weight of the polymer diatomic alcohol is 2500-3500.
The small molecule polyol is the mixture of Isosorbide-5-Nitrae butanediol and 3- γ-aminopropylsilane triol, mass ratio 4:1.
The stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) ethylene
The mixture of base -3- pyridyl ketone and four (3,5- di-t-butyl -4- hydroxyl) benzenpropanoic acid pentaerythritol esters, mass ratio 3:2:
2。
The regulator is triethanolamine.
The end-capping reagent is diacetylmonoxime.
A kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 45 DEG C, preheating time 15min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 150rad/min；It is stirring
While, it is heated up with the heating rate of 1 DEG C/min, is warming up to 80 DEG C；It keeps temperature-resistant, reacts 30min, obtain pre-polymerization
Body；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 400rad/min
Revolving speed be stirred, react 75min；It adds regulator to be adjusted, regulating time 10min；Then with end-capping reagent into
Row sealing end, the reaction was continued 25min form mixture；Step 4: mixture obtained in step 3 is mixed with deionized water
It closes, mixes 25min under conditions of revolving speed is 300rad/min, obtain aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Comparative example 2:
A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, including following parts by weight material composition:
25 parts of isocyanates；
50 parts of deionized water；
10 parts of polymer diatomic alcohol；
8 parts of small molecule polyol；
6 parts of chain extender；
2 parts of stabilizer；
4 parts of regulator；
2 parts of end-capping reagent；
The chain extender is N- tri- (methylol) methyl-3-aminopropanesulfonicacid acid sodium.
The isocyanates is isophorone diisocyanate, hexamethylene diisocyanate and the own diisocyanate of trimethyl
The mixture of ester, mass ratio 7:2:1.
The polymer diatomic alcohol is the mixture of polyoxypropyleneglycol and poly- allyl diethylene glycol (DEG) ester, quality
Than 1:1, the number-average molecular weight of the polymer diatomic alcohol is 2500-3500.
The small molecule polyol is the mixture of Isosorbide-5-Nitrae butanediol and 3- γ-aminopropylsilane triol, mass ratio 4:1.
The stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) ethylene
The mixture of base -3- pyridyl ketone and four (3,5- di-t-butyl -4- hydroxyl) benzenpropanoic acid pentaerythritol esters, mass ratio 3:2:
2。
The regulator is triethanolamine.
The end-capping reagent is diacetylmonoxime.
A kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 45 DEG C, preheating time 15min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 150rad/min；It is stirring
While, it is heated up with the heating rate of 1 DEG C/min, is warming up to 80 DEG C；It keeps temperature-resistant, reacts 30min, obtain pre-polymerization
Body；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 400rad/min
Revolving speed be stirred, react 75min；It adds regulator to be adjusted, regulating time 10min；Then with end-capping reagent into
Row sealing end, the reaction was continued 25min form mixture；Step 4: mixture obtained in step 3 is mixed with deionized water
It closes, mixes 25min under conditions of revolving speed is 300rad/min, obtain aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Comparative example 3:
A kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, including following parts by weight material composition:
25 parts of isocyanates；
50 parts of deionized water；
10 parts of polymer diatomic alcohol；
8 parts of small molecule polyol；
6 parts of chain extender；
2 parts of stabilizer；
4 parts of regulator；
2 parts of end-capping reagent；
The chain extender is bis- (the butyryl acyloxy) -2- butylene of 1,4-.
The isocyanates is isophorone diisocyanate, hexamethylene diisocyanate and the own diisocyanate of trimethyl
The mixture of ester, mass ratio 7:2:1.
The polymer diatomic alcohol is the mixture of polyoxypropyleneglycol and poly- allyl diethylene glycol (DEG) ester, quality
Than 1:1, the number-average molecular weight of the polymer diatomic alcohol is 2500-3500.
The small molecule polyol is the mixture of Isosorbide-5-Nitrae butanediol and 3- γ-aminopropylsilane triol, mass ratio 4:1.
The stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) ethylene
The mixture of base -3- pyridyl ketone and four (3,5- di-t-butyl -4- hydroxyl) benzenpropanoic acid pentaerythritol esters, mass ratio 3:2:
2。
The regulator is triethanolamine.
The end-capping reagent is diacetylmonoxime.
A kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 45 DEG C, preheating time 15min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 150rad/min；It is stirring
While, it is heated up with the heating rate of 1 DEG C/min, is warming up to 80 DEG C；It keeps temperature-resistant, reacts 30min, obtain pre-polymerization
Body；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 400rad/min
Revolving speed be stirred, react 75min；It adds regulator to be adjusted, regulating time 10min；Then with end-capping reagent into
Row sealing end, the reaction was continued 25min form mixture；Step 4: mixture obtained in step 3 and deionized water water are carried out
Mixing mixes 25min under conditions of revolving speed is 300rad/min, obtains aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Comparative example 4:
Kind sulfonic acid type water-based polyurethane pressure sensitive adhesive, including following parts by weight material composition:
25 parts of isocyanates；
50 parts of deionized water；
10 parts of polymer diatomic alcohol；
8 parts of small molecule polyol；
6 parts of chain extender；
2 parts of stabilizer；
4 parts of regulator；
2 parts of end-capping reagent；
The chain extender is 8- amino naphthalenes -1,6- sodium disulfonate, bis- (the butyryl acyloxy) -2- butylene of 1,4- and (the hydroxyl first of N- tri-
Base) methyl-3-aminopropanesulfonicacid acid sodium mixture, mass ratio 3:1:1.
The isocyanates is isophorone diisocyanate, hexamethylene diisocyanate and the own diisocyanate of trimethyl
The mixture of ester, mass ratio 7:2:1.
The polymer diatomic alcohol is the mixture of polyoxypropyleneglycol and poly- allyl diethylene glycol (DEG) ester, quality
Than 1:1, the number-average molecular weight of the polymer diatomic alcohol is 2500-3500.
The small molecule polyol is the mixture of Isosorbide-5-Nitrae butanediol and 3- γ-aminopropylsilane triol, mass ratio 4:1.
The stabilizer is 1- methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene.
The regulator is triethanolamine.
The end-capping reagent is diacetylmonoxime.
A kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into
It is preheated in baking oven, oven temperature is set as 45 DEG C, preheating time 15min；
Step 2: after preheating, polymer diatomic alcohol and isocyanates is mixed, is then placed in reaction vessel, connects
Will small molecule polyol be added reaction vessel in be stirred mixing, be stirred with the revolving speed of 150rad/min；It is stirring
While, it is heated up with the heating rate of 1 DEG C/min, is warming up to 80 DEG C；It keeps temperature-resistant, reacts 30min, obtain pre-polymerization
Body；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 400rad/min
Revolving speed be stirred, react 75min；It adds regulator to be adjusted, regulating time 10min；Then with end-capping reagent into
Row sealing end, the reaction was continued 25min form mixture；Step 4: mixture obtained in step 3 and deionized water water are carried out
Mixing mixes 25min under conditions of revolving speed is 300rad/min, obtains aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
Tack test: tack test is carried out to sample according to the standard of GB/T4852-1984；
It holds sticky test: sample being carried out according to the standard of GB/T4851-1998 to hold sticky test；
Temperature is 25 DEG C
| Sample | Tack (steel ball number) | Hold sticky (h) |
| Embodiment 1 | 11 | 23.5 |
| Embodiment 2 | 10 | 22.0 |
| Embodiment 3 | 10 | 22.5 |
| Comparative example 1 | 8 | 14.5 |
| Comparative example 2 | 7 | 14.0 |
| Comparative example 3 | 7 | 12.5 |
| Comparative example 4 | 8 | 17.5 |
Sample is tested after baking oven 2 hours at 80 DEG C:
| Sample | Hold sticky (h) |
| Embodiment 1 | 21.5 |
| Embodiment 2 | 20.0 |
| Embodiment 3 | 20.5 |
| Comparative example 1 | 11.0 |
| Comparative example 2 | 10.0 |
| Comparative example 3 | 9,5 |
| Comparative example 4 | 9.0 |
In the present invention, the main body of entire pressure sensitive adhesive is isocyanates, polymer diatomic alcohol, small molecule polyol and chain extension
The polymer that agent is constituted, it is nontoxic and pollution-free without containing organic solvents such as toluene using deionized water as solvent, it is very environmentally friendly；?
When preparing pressure sensitive adhesive, first polymer diatomic alcohol and isocyanates are respectively put into baking oven and carry out the pre-heat treatment, oven temperature is
40-50℃；Then polymer diatomic alcohol and isocyanates are mixed again；The purpose of the pre-heat treatment processing is to make isocyanates and gather
It is more uniform to close the mixing of object dihydric alcohol, is chemically reacted convenient for subsequent, generates longer segment；Then it is polynary that small molecule is added
On the one hand alcohol, small molecule polyol have more hydroxyl, hydrophilicity is good, mixed convenient for the polymer and water phase of subsequent generation
It closes, forms lotion, the other end is also used as the soft segment in polymer, so that long segment is not easy to knot, it is whole to play adjusting
The effect of the structure of a polymer molecule；It after small molecule polyol is added, heats up, when heating will slowly rise full, and rate is excellent
It is selected as 1-2 DEG C/min, prevents heating rate too fast, reaction is not enough between reactant, and the degree of polymerization is larger, while too fast heating
It also results in and knots between the segment of polymer and segment, be unable to get ideal product；It is warming up to 75-85 DEG C, is then kept
It is temperature-resistant, it will sufficiently be reacted between polymer diatomic alcohol, isocyanates and small molecule polyol, form performed polymer, in this way
The performed polymer of formation just has more good tack, preferably continues bonding effect.
Select preferred mass than the isophorone diisocyanate for 7:2:1, hexa-methylene in isocyanate reagents
The mixture of diisocyanate and trimethyl hexamethylene diisocyanate can play the role of adjusting entire polymer chain segment molecule；
Polymer diatomic alcohol is polyoxypropyleneglycol, poly- allyl diethylene glycol (DEG) ester, azelaic acid -1,2- propylene glycol are poly-
At least one of ester and polyethylene glycol succinate, preferred mass is than the polyoxypropyleneglycol and poly- allyl for 1:1
The mixture of base diethylene glycol (DEG) ester, the number-average molecular weight of the polymer diatomic alcohol are 2500-3500, same adjustable polymer
The effect of structure.
Under polymer diatomic alcohol and the preferred situation of isocyanates, synergy can produce, so that whole pressure sensitive adhesive
Tack and hold sticky further promoted.
After forming performed polymer, the reaction was continued for addition chain extender and stabilizer；Wherein chain extender, which plays, continues to extend segment
Purpose；As one of new wound point of the invention, 8- amino naphthalenes -1,6- sodium disulfonate, Isosorbide-5-Nitrae-have been selected in the selection of chain extender
The mixture of bis- (butyryl acyloxy) -2- butylene and N- tri- (methylol) methyl-3-aminopropanesulfonicacid acid sodium；In being total to for these three substances
It under same-action, on the one hand can play the role of good chain extension, extend the length of polymer, and adjust the structure of polymer；Together
When with polymer body play synergistic effect so that the viscosity of holding of pressure sensitive adhesive further increases；Simultaneously because wherein 8- amino naphthalenes-
1,6- sodium disulfonate and N- tri- (methylol) methyl-3-aminopropanesulfonicacid acid sodium are sulfonic acid type chain extender, introduce sulfonic acid group,
So that pressure sensitive adhesive prepared by the present invention has certain temperature tolerance；
As another new wound point of the invention, it joined a small amount of stabilizer, selected 1- methoxyl group-in stabilizer
2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) vinyl-3- pyridyl ketone and four (3,5- di-t-butyls-
4- hydroxyl) benzenpropanoic acid pentaerythritol ester mixture；Under the collective effect of these substances, stable work is on the one hand played
With the heat resistance of pressure sensitive adhesive being improved, so that application range of the invention is more preferable；On the other hand have between polymer body
There is preferable concertedness, further increase pressure sensitive adhesive holds viscosity；
Chain extender and stabilizer are added in reactor again, with other material mixings it is uniform after, add regulator, this hair
Bright middle regulator has selected triethanolamine, is on the one hand used for the pH value of regulation system, on the other hand for reconciling polymer body
With the compatibility between other function auxiliary agent, be conducive to the overall performance of reinforcing material；Then with end-capping reagent to polymer body
It is blocked, forms mixture；The mixture is mixed with deionized water, forms aqueous polyurethane emulsion；It finally will be aqueous poly-
Urethane lotion applicator obtains pressure sensitive adhesive in film and drying.The tack of the pressure sensitive adhesive is very strong, holds viscosity also very by force, expands significantly
The big application range of waterborne polyurethane pressure-sensitive adhesives.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive, it is characterised in that: including following parts by weight material composition:
15-30 parts of isocyanates；
30-70 parts of deionized water；
5-15 parts of polymer diatomic alcohol；
5-10 parts of small molecule polyol；
5-10 parts of chain extender；
1-3 parts of stabilizer；
2-5 parts of regulator；
1-3 parts of end-capping reagent；
The chain extender is 8- amino naphthalenes -1,6- sodium disulfonate, bis- (the butyryl acyloxy) -2- butylene of 1,4- and N- tri- (methylol) first
Base-Homotaurine sodium mixture, mass ratio 3:1:1.
2. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive according to claim 1, it is characterised in that: the isocyanates is
At least one of isophorone diisocyanate, hexamethylene diisocyanate and trimethyl hexamethylene diisocyanate.
3. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive according to claim 2, it is characterised in that: the isocyanates is
The mixture of isophorone diisocyanate, hexamethylene diisocyanate and trimethyl hexamethylene diisocyanate, mass ratio are
7:2:1。
4. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive according to claim 3, it is characterised in that: the polymer binary
Alcohol is polyoxypropyleneglycol, poly- allyl diethylene glycol (DEG) ester, azelaic acid -1,2- propanediol polyester and poly-succinic ethylene glycol
At least one of ester, the number-average molecular weight of the polymer diatomic alcohol are 2500-3500.
5. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive according to claim 4, it is characterised in that: the small molecule is polynary
Alcohol is Isosorbide-5-Nitrae butanediol, 3- γ-aminopropylsilane triol, at least one of glycerine and pentaerythrite.
6. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive according to claim 1, it is characterised in that: the stabilizer is 1-
Methoxyl group-2- methyl-1-(trimethylsiloxy group) propylene, 2- (dimethylamino) vinyl-3- pyridyl ketone and four (3,5- bis-
Tertiary butyl-4-hydroxy) benzenpropanoic acid pentaerythritol ester mixture, mass ratio 3:2:2.
7. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive according to claim 6, it is characterised in that: the regulator is three
Ethanol amine.
8. a kind of sulfonic acid type water-based polyurethane pressure sensitive adhesive according to claim 7, it is characterised in that: the end-capping reagent is fourth
Ketoxime.
9. a kind of preparation method of sulfonic acid type water-based polyurethane pressure sensitive adhesive as claimed in any of claims 1 to 8,
It is characterized in that: the following steps are included:
Step 1: required substance is weighed according to the parts by weight of setting, polymer diatomic alcohol and isocyanates are respectively put into baking oven
In preheated, oven temperature is set as 40-50 DEG C, preheating time 10-15min；
Step 2: after preheatings, polymer diatomic alcohol and isocyanates being mixed, are then placed in reaction vessel, then will
Small molecule polyol is added in reaction vessel and is stirred mixing, is stirred with the revolving speed of 100-200rad/min；It is stirring
While, it is heated up with the heating rate of 1-2 DEG C/min, is warming up to 75-85 DEG C；It keeps temperature-resistant, reacts 30min, obtain
To performed polymer；
Step 3: then chain extender and stabilizer are added in reactor and carry out hybrid reaction, while with 300-500rad/min
Revolving speed be stirred, react 60-90min；It adds regulator to be adjusted, regulating time 10-15min；Then with envelope
End agent is blocked, the reaction was continued 15-30min, forms mixture；
Step 4: mixture obtained in step 3 is mixed with deionized water, is 200-400rad/min's in revolving speed
Under the conditions of mix 20-30min, obtain aqueous polyurethane emulsion；
Step 5: aqueous polyurethane emulsion is coated on film and drying, obtains pressure sensitive adhesive.
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| CN110128613B (en) * | 2019-04-08 | 2021-05-28 | 温州大学 | Waterborne polyurethane for leather with high water vapor permeability |
| CN113621322A (en) * | 2021-07-19 | 2021-11-09 | 宁波卓越印务有限公司 | Multifunctional adhesive label and preparation method thereof |
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