CN103773283B - Preparation method of weather-resistant water-based adhesive - Google Patents
Preparation method of weather-resistant water-based adhesive Download PDFInfo
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Abstract
The invention discloses a preparation method of a weather-resistant water-based adhesive, which mainly comprises the following steps: weighing components in percentage by weight, and adding sodium acetate, disodium hydrogen phosphate dodecahydrate, a protective colloid and a defoaming agent into deionized water to obtain a protective colloid solution; adding part of vinyl acetate and crosslinking monomer into the protective colloid solution, adding all crosslinking agent solution, and adding part of oxydol and tartaric acid to obtain a seed emulsion; and dropwisely adding part of vinyl acetate and oxydol into the seed emulsion, adding the rest of tartaric acid, dropwisely adding the rest of vinyl acetate and oxydol, carrying out curing reaction, adding a film-forming assistant, and adding a mold preventive to obtain the weather-resistant water-based adhesive. The weather-resistant water-based adhesive has the advantages of high bonding strength, excellent heat resistance and excellent water resistance, is convenient to use, enhances the work efficiency and lowers the cost.
Description
Technical field
The present invention relates to a kind of caking agent, be specifically related to a kind of preparation method of weathering resistance aqueous adhesive.
Background technology
The advantages such as bonding strength is high, curing speed is fast owing to having for polyvinyl acetate emulsion, easy to use, low price, nontoxic pollution-free, from being widely used in a lot of industry such as wood working, Furniture manufacture, building decoration, paper product processing, bookbinding, fabric treating, artwork manufacture 20th century so far always.But at present polyvinyl acetate emulsion water-fast, heat-resisting, weather resistance is poor, soak, make moist and easily turn white, ftracture, heat intensity decline, particularly outdoor decoration and kitchen, toilet, bathroom bonding in, customer complaint is more.For this reason, each manufacturer by adding toxic cross-linking agents isocyanic ester in polyvinyl acetate emulsion, improving the water resistance of emulsion, hardly realizing that isocyanic ester has injury to human body one after another, can be carcinogenic.And employing this method, must matching while using during use, deployed glue must be finished in 1 hour, otherwise will solidify, scraps, and both polluted environment, and wasted resource again.Therefore, existing polyvinyl acetate emulsion can not adapt to the needs of industrialized production, seriously constrains the development of himself.Also many producers are had to adopt other formula to prepare tackiness agent at present, as China Patent No. be 201210038155.5 patent discloses a kind of tackiness agent, be made up of formalin, urea, polyvinyl alcohol, trimeric cyanamide and sodium hydroxide, although technique is simple, easily realize suitability for industrialized production, and free formaldehyde content is also low, but still there is the volatile matter of a small amount of formaldehyde, current environmental requirement can not be met; China Patent No. be 200810058298.6 patent discloses a kind of environment-friendly adhesive, make taxi mother liquor by compound emulsifier tween T-80 and water, vinylformic acid, water, thickening material, tensio-active agent, tackifier, properties-correcting agent, initiator, softening agent, sanitas form, not blowdown, not toxin expelling, but bonding strength is low, curing speed is slow, and application is subject to certain restriction.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides one not containing any poisonous and harmful chemical composition, have that curing speed is fast, bonding strength is high, water-fast, heat-resisting, ageing-resistant, easy to use, without the need to allotment, can meet the demand of industrialized production, property indices is all better than the preparation method of the weathering resistance aqueous adhesive of traditional polyvinyl acetate emulsion.
To achieve these goals, the technical solution adopted in the present invention is:
A preparation method for weathering resistance aqueous adhesive, comprises the following steps:
(1) each component is taken by following weight percent:
Deionized water 40 ~ 55%
Sodium-acetate 0.01 ~ 0.02%
Disodium hydrogen phosphate dodecahydrate 0.05 ~ 0.15%
Protective colloid 3 ~ 5%
Tartrate 0.15 ~ 0.3%
Linking agent 0.003 ~ 0.005%
Vinyl acetate between to for plastic 40 ~ 55%
Cross-linking monomer 0.005 ~ 0.007%
Hydrogen peroxide 0.1 ~ 0.2%
Mould inhibitor 0.05 ~ 0.15%
Defoamer 0.01 ~ 0.03%
Film coalescence aid 1.5 ~ 3.5%;
(2) linking agent and deionized water are mixed with the cross-linking agent solution that mass concentration is 1%;
(3) deionized water remaining after adding step (2) preparation cross-linking agent solution in a kettle., start is stirred and adds whole sodium-acetates, disodium hydrogen phosphate dodecahydrate, protective colloid and defoamer, be warming up to 85 ± 5 DEG C, insulation dissolving 1 ~ 1.5 hour, 40 ~ 50 DEG C are cooled to, obtained protective colloid solution after dissolving completely;
(4) in the protective colloid solution of step (3) gained, add 3% and whole cross-linking monomers of vinyl acetate between to for plastic gross weight, add the whole cross-linking agent solution prepared again, be warming up to 68 DEG C, insulation reaction 20 ~ 40 minutes, then 50% of 3% and tartrate gross weight of hydrogen peroxide gross weight is dripped, again temperature is risen to 80 ~ 85 DEG C, form seed emulsion;
(5) continue to drip vinyl acetate between to for plastic and hydrogen peroxide in the seed emulsion of step (4) gained, wherein the dripping quantity of vinyl acetate between to for plastic is that step (4) adds 2/3 of the residuals weight after 3% of vinyl acetate between to for plastic gross weight, the dripping quantity of hydrogen peroxide is 2/3 of the residuals weight after 3% of step (4) dropping hydrogen peroxide gross weight, and then add remaining tartrate, continue again to drip remaining vinyl acetate between to for plastic and hydrogen peroxide, in dropping process, temperature controls at 80 ~ 85 DEG C, drips and controls total time to drip in 4 ~ 6 hours to terminate;
(6), after remaining in step (5) vinyl acetate between to for plastic and hydrogen peroxide drip and terminate, slaking reaction was cooled to 60 ~ 65 DEG C after 1 ~ 1.5 hour, added whole film coalescence aid, stirring reaction is after 0.5 ~ 1 hour, be cooled to 45 DEG C, add whole mould inhibitors, obtained weathering resistance aqueous adhesive.
Described protective colloid is complete alcoholysis polyvinyl alcohol RS-2117.
Described linking agent is ferrous sulfate.
Described cross-linking monomer is vinylbenzene.
Described mould inhibitor is isothiazolinone biocide sanitas.
Described defoamer is polysiloxane-based water-based defoamer.
Described film coalescence aid is 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate or diethylene glycol dibenzoate.
The preparation method of a kind of weathering resistance aqueous adhesive provided by the invention, has following beneficial effect:
(1) formula selects the polyvinyl alcohol RS-2117 containing special hydrophobic group, complete alcoholysis as the protective colloid of weathering resistance aqueous adhesive; utilize it in water, form the body that associates by force; there is higher water resistance and bonding strength, to promote the water resistance of aqueous adhesive.
(2) adopt surfactant-free emulsion polymerization process to replace conventional emulsion polymerizations technique in preparation process, without emulsifying agent in polymerization system, reject bringing into of hydrophilic radical, thus improve water resistance and the environmental-protecting performance of aqueous adhesive.
(3) polyvalent metal FeSO is utilized in polymerization process
4as linking agent, and form very strong ionic linkage between carboxyl, effectively can improve the bonding strength of micro polymer intergranular, be simultaneously main monomer with vinyl acetate between to for plastic, vinylbenzene is cross-linking monomer, modification by copolymerization, to improve bonding strength and the water resistance of water-based adhesion agent, and carry out with hydrogen peroxide and tartaric redox system, utilize the reason due to hydrogen bond, hydroxyl and carboxyl can carry out false crosslinked this principle of effect, enhance the interaction between polyalcohol emulsion particle and protective colloid polyvinyl alcohol, add the compactness extent of glued membrane, thus the bonding strength of aqueous adhesive is significantly improved, heat-resisting, water resistance.
(4) the present invention is not containing APEO(alkylphenol polyoxyethylene), phthalate and isocyanates objectionable impurities, belong to Green Product.
In sum, instant invention overcomes that traditional polyvinyl acetate synthetic emulsion is water-fast, heat-resisting, weather resistance is poor, in use must add toxic cross-linking agents isocyanic ester to improve the water resistance of emulsion, simultaneously must be now with the current, life cycle is short, wastes the defects such as serious, have that bonding strength is high, heat-resisting, water resistance is excellent, easy to use, without the need to allocating direct use, both improve working efficiency and having again reduced cost.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1:
(1) press row weight proportion and take each component:
Deionized water 40%
Sodium-acetate 0.01%
Disodium hydrogen phosphate dodecahydrate 0.05%
Protective colloid polyvinyl alcohol RS-2117 5%
Tartrate 0.3%
Linking agent FeSO
40.003%
Vinyl acetate between to for plastic 52.972%
Cross-linking monomer vinylbenzene 0.005%
Hydrogen peroxide 0.1%
Mould inhibitor fungicidal preservative China Tech-983 0.05%
Defoamer water-based defoamer Defom W-052 0.01%
Film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 1.5%;
(2) by load weighted linking agent FeSO
4the linking agent FeSO that mass concentration is 1% is mixed with deionized water
4solution, stand-by;
(3) preparation FeSO is added in a kettle.
4deionized water remaining after solution, start is stirred and is added whole sodium-acetates, disodium hydrogen phosphate dodecahydrate and protective colloid polyvinyl alcohol RS-2117 and water-based defoamer Defom W-052, be warming up to 85 ± 5 DEG C, insulation dissolving 1 ~ 1.5 hour, 40 ~ 50 DEG C are cooled to, obtained protective colloid solution after polyvinyl alcohol RS-2117 dissolves completely;
(4) in the protective colloid solution of step (3) gained, add 3% and whole cross-linking monomer vinylbenzene of vinyl acetate between to for plastic total amount, then add the whole linking agent FeSO prepared
4solution, be warming up to 68 DEG C, insulation reaction 20 ~ 40 minutes, start to drip hydrogen peroxide and reductive agent tartrate, wherein the dropping weight of hydrogen peroxide is 3% of hydrogen peroxide gross weight, tartaric dropping weight is 50% of tartrate gross weight, then the mixeding liquid temperature after dropping hydrogen peroxide and reductive agent tartrate is risen to 80 ~ 85 DEG C, obtained seed emulsion;
(5) continue to drip vinyl acetate between to for plastic and hydrogen peroxide in the seed emulsion of step (4) gained, wherein the dripping quantity of vinyl acetate between to for plastic is that step (4) adds 2/3 of the residuals weight after 3% of vinyl acetate between to for plastic gross weight, the dripping quantity of hydrogen peroxide is 2/3 of the residuals weight after 3% of step (4) dropping hydrogen peroxide gross weight, and then add remaining tartrate, continue again to drip remaining vinyl acetate between to for plastic and hydrogen peroxide, in dropping process, temperature controls at 80 ~ 85 DEG C, drips and controls total time to drip in 4 ~ 6 hours to terminate;
(6) vinyl acetate between to for plastic remaining in step (5) and hydrogen peroxide are dripped the mixing solutions slaking reaction containing polymkeric substance terminating rear gained to lower the temperature after 1 ~ 1.5 hour, be cooled to 60 ~ 65 DEG C, add whole film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate, stirring reaction is after 0.5 ~ 1 hour, be cooled to 45 DEG C, add whole fungicidal preservative China Tech-983, obtained weathering resistance aqueous adhesive.
Embodiment 2:
(1) press row weight proportion and take each component:
Deionized water 52.638%
Sodium-acetate 0.02%
Disodium hydrogen phosphate dodecahydrate 0.15%
Protective colloid polyvinyl alcohol RS-2117 3%
Tartrate 0.3%
Linking agent FeSO
40.005%
Vinyl acetate between to for plastic 40%
Cross-linking monomer vinylbenzene 0.007%
Hydrogen peroxide 0.2%
Mould inhibitor fungicidal preservative Promex CHS4 0.15%
Defoamer water-based defoamer DEFOMEX 2,063 0.03%
Film coalescence aid diethylene glycol dibenzoate 3.5%;
(2) by load weighted linking agent FeSO
4the linking agent FeSO that mass concentration is 1% is mixed with deionized water
4solution, stand-by;
(3) preparation FeSO is added in a kettle.
4deionized water remaining after solution, start is stirred and is added whole sodium-acetates, disodium hydrogen phosphate dodecahydrate and protective colloid polyvinyl alcohol RS-2117 and water-based defoamer DEFOMEX 2063, be warming up to 85 ± 5 DEG C, insulation dissolving 1 ~ 1.5 hour, 40 ~ 50 DEG C are cooled to, obtained protective colloid solution after polyvinyl alcohol RS-2117 dissolves completely;
(4) in the protective colloid solution of step (3) gained, add 3% and whole cross-linking monomer vinylbenzene of vinyl acetate between to for plastic total amount, then add the whole linking agent FeSO prepared
4solution, be warming up to 68 DEG C, insulation reaction 20 ~ 40 minutes, start to drip hydrogen peroxide and reductive agent tartrate, wherein the dropping weight of hydrogen peroxide is 3% of hydrogen peroxide gross weight, tartaric dropping weight is 50% of tartrate gross weight, then the mixeding liquid temperature after dropping hydrogen peroxide and reductive agent tartrate is risen to 80 ~ 85 DEG C, obtained seed emulsion;
(5) continue to drip vinyl acetate between to for plastic and hydrogen peroxide in the seed emulsion of step (4) gained, wherein the dripping quantity of vinyl acetate between to for plastic is that step (4) adds 2/3 of the residuals weight after 3% of vinyl acetate between to for plastic gross weight, the dripping quantity of hydrogen peroxide is 2/3 of the residuals weight after 3% of step (4) dropping hydrogen peroxide gross weight, and then add remaining tartrate, continue again to drip remaining vinyl acetate between to for plastic and hydrogen peroxide, in dropping process, temperature controls at 80 ~ 85 DEG C, drips and controls total time to drip in 4 ~ 6 hours to terminate;
(6) vinyl acetate between to for plastic remaining in step (5) and hydrogen peroxide are dripped the mixing solutions slaking reaction containing polymkeric substance terminating rear gained to lower the temperature after 1 ~ 1.5 hour, be cooled to 60 ~ 65 DEG C, add whole film coalescence aid diethylene glycol dibenzoate, stirring reaction is after 0.5 ~ 1 hour, be cooled to 45 DEG C, add whole fungicidal preservative Promex CHS4, obtained weathering resistance aqueous adhesive.
Embodiment 3:
(1) press row weight proportion and take each component:
Deionized water 55%
Sodium-acetate 0.01%
Disodium hydrogen phosphate dodecahydrate 0.05%
Protective colloid polyvinyl alcohol RS-2117 3%
Tartrate 0.15%
Linking agent FeSO
40.003%
Vinyl acetate between to for plastic 40.122%
Cross-linking monomer vinylbenzene 0.005%
Hydrogen peroxide 0.1%
Mould inhibitor fungicidal preservative Promex CHS4 0.05%
Defoamer water-based defoamer DEFOMEX 2,063 0.01%
Film coalescence aid diethylene glycol dibenzoate 1.5%;
(2) by load weighted linking agent FeSO
4the linking agent FeSO that mass concentration is 1% is mixed with deionized water
4solution, stand-by;
(3) preparation FeSO is added in a kettle.
4deionized water remaining after solution, start is stirred and is added whole sodium-acetates, disodium hydrogen phosphate dodecahydrate and protective colloid polyvinyl alcohol RS-2117 and water-based defoamer DEFOMEX 2063, be warming up to 85 ± 5 DEG C, insulation dissolving 1 ~ 1.5 hour, 40 ~ 50 DEG C are cooled to, obtained protective colloid solution after polyvinyl alcohol RS-2117 dissolves completely;
(4) in the protective colloid solution of step (3) gained, add 3% and whole cross-linking monomer vinylbenzene of vinyl acetate between to for plastic total amount, then add the whole linking agent FeSO prepared
4solution, be warming up to 68 DEG C, insulation reaction 20 ~ 40 minutes, start to drip hydrogen peroxide and reductive agent tartrate, wherein the dropping weight of hydrogen peroxide is 3% of hydrogen peroxide gross weight, tartaric dropping weight is 50% of tartrate gross weight, then the mixeding liquid temperature after dropping hydrogen peroxide and reductive agent tartrate is risen to 80 ~ 85 DEG C, obtained seed emulsion;
(5) continue to drip vinyl acetate between to for plastic and hydrogen peroxide in the seed emulsion of step (4) gained, wherein the dripping quantity of vinyl acetate between to for plastic is that step (4) adds 2/3 of the residuals weight after 3% of vinyl acetate between to for plastic gross weight, the dripping quantity of hydrogen peroxide is 2/3 of the residuals weight after 3% of step (4) dropping hydrogen peroxide gross weight, and then add remaining tartrate, continue again to drip remaining vinyl acetate between to for plastic and hydrogen peroxide, in dropping process, temperature controls at 80 ~ 85 DEG C, drips and controls total time to drip in 4 ~ 6 hours to terminate;
(6) vinyl acetate between to for plastic remaining in step (5) and hydrogen peroxide are dripped the mixing solutions slaking reaction containing polymkeric substance terminating rear gained to lower the temperature after 1 ~ 1.5 hour, be cooled to 60 ~ 65 DEG C, add whole film coalescence aid diethylene glycol dibenzoate, stirring reaction is after 0.5 ~ 1 hour, be cooled to 45 DEG C, add whole fungicidal preservative Promex CHS4, obtained weathering resistance aqueous adhesive.
Embodiment 4:
(1) press row weight proportion and take each component:
Deionized water 40.122%
Sodium-acetate 0.01%
Disodium hydrogen phosphate dodecahydrate 0.05%
Protective colloid polyvinyl alcohol RS-2117 3%
Tartrate 0.15%
Linking agent FeSO
40.003%
Vinyl acetate between to for plastic 55%
Cross-linking monomer vinylbenzene 0.005%
Hydrogen peroxide 0.1%
Mould inhibitor fungicidal preservative China Tech-983 0.05%
Defoamer water-based defoamer Defom W-052 0.01%
Film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 1.5%;
(2) by load weighted linking agent FeSO
4the linking agent FeSO that mass concentration is 1% is mixed with deionized water
4solution, stand-by;
(3) preparation FeSO is added in a kettle.
4deionized water remaining after solution, start is stirred and is added whole sodium-acetates, disodium hydrogen phosphate dodecahydrate and protective colloid polyvinyl alcohol RS-2117 and water-based defoamer Defom W-052, be warming up to 85 ± 5 DEG C, insulation dissolving 1 ~ 1.5 hour, 40 ~ 50 DEG C are cooled to, obtained protective colloid solution after polyvinyl alcohol RS-2117 dissolves completely;
(4) in the protective colloid solution of step (3) gained, add 3% and whole cross-linking monomer vinylbenzene of vinyl acetate between to for plastic total amount, then add the whole linking agent FeSO prepared
4solution, be warming up to 68 DEG C, insulation reaction 20 ~ 40 minutes, start to drip hydrogen peroxide and reductive agent tartrate, wherein the dropping weight of hydrogen peroxide is 3% of hydrogen peroxide gross weight, tartaric dropping weight is 50% of tartrate gross weight, then the mixeding liquid temperature after dropping hydrogen peroxide and reductive agent tartrate is risen to 80 ~ 85 DEG C, obtained seed emulsion;
(5) continue to drip vinyl acetate between to for plastic and hydrogen peroxide in the seed emulsion of step (4) gained, wherein the dripping quantity of vinyl acetate between to for plastic is that step (4) adds 2/3 of the residuals weight after 3% of vinyl acetate between to for plastic gross weight, the dripping quantity of hydrogen peroxide is 2/3 of the residuals weight after 3% of step (4) dropping hydrogen peroxide gross weight, and then add remaining tartrate, continue again to drip remaining vinyl acetate between to for plastic and hydrogen peroxide, in dropping process, temperature controls at 80 ~ 85 DEG C, drips and controls total time to drip in 4 ~ 6 hours to terminate;
(6) vinyl acetate between to for plastic remaining in step (5) and hydrogen peroxide are dripped the mixing solutions slaking reaction containing polymkeric substance terminating rear gained to lower the temperature after 1 ~ 1.5 hour, be cooled to 60 ~ 65 DEG C, add whole film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate, stirring reaction is after 0.5 ~ 1 hour, be cooled to 45 DEG C, add whole fungicidal preservative China Tech-983, obtained weathering resistance aqueous adhesive.
Embodiment 5:
(1) press row weight proportion and take each component:
Deionized water 45.405%
Sodium-acetate 0.015%
Disodium hydrogen phosphate dodecahydrate 0.10%
Protective colloid polyvinyl alcohol RS-2117 4%
Tartrate 0.20%
Linking agent FeSO
40.004%
Vinyl acetate between to for plastic 48%
Cross-linking monomer vinylbenzene 0.006%
Hydrogen peroxide 0.15%
Mould inhibitor fungicidal preservative China Tech-983 0.10%
Defoamer water-based defoamer Defom W-052 0.02%
Film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 2.0%;
(2) by load weighted linking agent FeSO
4the linking agent FeSO that mass concentration is 1% is mixed with deionized water
4solution, stand-by;
(3) preparation FeSO is added in a kettle.
4deionized water remaining after solution, start is stirred and is added whole sodium-acetates, disodium hydrogen phosphate dodecahydrate and protective colloid polyvinyl alcohol RS-2117 and water-based defoamer Defom W-052, be warming up to 85 ± 5 DEG C, insulation dissolving 1 ~ 1.5 hour, 40 ~ 50 DEG C are cooled to, obtained protective colloid solution after polyvinyl alcohol RS-2117 dissolves completely;
(4) in the protective colloid solution of step (3) gained, add 3% and whole cross-linking monomer vinylbenzene of vinyl acetate between to for plastic total amount, then add the whole linking agent FeSO prepared
4solution, be warming up to 68 DEG C, insulation reaction 20 ~ 40 minutes, start to drip hydrogen peroxide and reductive agent tartrate, wherein the dropping weight of hydrogen peroxide is 3% of hydrogen peroxide gross weight, tartaric dropping weight is 50% of tartrate gross weight, then the mixeding liquid temperature after dropping hydrogen peroxide and reductive agent tartrate is risen to 80 ~ 85 DEG C, obtained seed emulsion;
(5) continue to drip vinyl acetate between to for plastic and hydrogen peroxide in the seed emulsion of step (4) gained, wherein the dripping quantity of vinyl acetate between to for plastic is that step (4) adds 2/3 of the residuals weight after 3% of vinyl acetate between to for plastic gross weight, the dripping quantity of hydrogen peroxide is 2/3 of the residuals weight after 3% of step (4) dropping hydrogen peroxide gross weight, and then add remaining tartrate, continue again to drip remaining vinyl acetate between to for plastic and hydrogen peroxide, in dropping process, temperature controls at 80 ~ 85 DEG C, drips and controls total time to drip in 4 ~ 6 hours to terminate;
(6) vinyl acetate between to for plastic remaining in step (5) and hydrogen peroxide are dripped the mixing solutions slaking reaction containing polymkeric substance terminating rear gained to lower the temperature after 1 ~ 1.5 hour, be cooled to 60 ~ 65 DEG C, add whole film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate, stirring reaction is after 0.5 ~ 1 hour, be cooled to 45 DEG C, add whole fungicidal preservative China Tech-983, obtained weathering resistance aqueous adhesive.
The salient features of the weathering resistance aqueous adhesive of table 1 obtained by embodiment 1 ~ 5 and with comparable situation that is domestic, same kind of products at abroad.
The detected result of table 1 embodiment 1-5 gained weathering resistance aqueous adhesive and the test result of like product.
In above-described embodiment, polyvinyl alcohol RS-2117 is provided by Kuraray; Sanitas China Tech-983 and sanitas Promex CHS4 are isothiazolinone biocide sanitas, and sanitas China Tech-983 is provided by Shanxi Petro-Chemical Design Inst., and sanitas Promex CHS4 is provided by Prom chem company of Britain; Defoamer Defom W-052 and defoamer DEFOMEX 2063 all belongs to polysiloxane-based water-based defoamer, and defoamer Defom W-052 is provided by Deuchem Co., Ltd., and defoamer DEFOMEX 2063 is provided by Italian Ning Baidi company; Ferrous sulfate, vinylbenzene, 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrates, diethylene glycol dibenzoate are known substance well known to those skilled in the art of the present technique, and are the titles of academicly specification.
Above-described embodiment is only for illustration of content of the present invention; should be understood that; providing of these embodiments only understands content of the present invention and advantage in order to help; not in order to limit the present invention; all any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a preparation method for weathering resistance aqueous adhesive, is characterized in that: comprise the following steps:
(1) each component is taken by following weight percent:
Deionized water 40 ~ 55%
Sodium-acetate 0.01 ~ 0.02%
Disodium hydrogen phosphate dodecahydrate 0.05 ~ 0.15%
Protective colloid 3 ~ 5%
Tartrate 0.15 ~ 0.3%
Linking agent 0.003 ~ 0.005%
Vinyl acetate between to for plastic 40 ~ 55%
Cross-linking monomer 0.005 ~ 0.007%
Hydrogen peroxide 0.1 ~ 0.2%
Mould inhibitor 0.05 ~ 0.15%
Defoamer 0.01 ~ 0.03%
Film coalescence aid 1.5 ~ 3.5%;
(2) linking agent and deionized water are mixed with the cross-linking agent solution that mass concentration is 1%;
(3) deionized water remaining after adding step (2) preparation cross-linking agent solution in a kettle., start is stirred and adds whole sodium-acetates, disodium hydrogen phosphate dodecahydrate, protective colloid and defoamer, be warming up to 85 ± 5 DEG C, insulation dissolving 1 ~ 1.5 hour, 40 ~ 50 DEG C are cooled to, obtained protective colloid solution after dissolving completely;
(4) in the protective colloid solution of step (3) gained, add 3% and whole cross-linking monomers of vinyl acetate between to for plastic gross weight, add the whole cross-linking agent solution prepared again, be warming up to 68 DEG C, insulation reaction 20 ~ 40 minutes, then 50% of 3% and tartrate gross weight of hydrogen peroxide gross weight is dripped, again temperature is risen to 80 ~ 85 DEG C, form seed emulsion;
(5) continue to drip vinyl acetate between to for plastic and hydrogen peroxide in the seed emulsion of step (4) gained, wherein the dripping quantity of vinyl acetate between to for plastic is that step (4) adds 2/3 of the residuals weight after 3% of vinyl acetate between to for plastic gross weight, the dripping quantity of hydrogen peroxide is 2/3 of the residuals weight after 3% of step (4) dropping hydrogen peroxide gross weight, and then add remaining tartrate, continue again to drip remaining vinyl acetate between to for plastic and hydrogen peroxide, in dropping process, temperature controls at 80 ~ 85 DEG C, drips and controls total time to drip in 4 ~ 6 hours to terminate;
(6), after remaining in step (5) vinyl acetate between to for plastic and hydrogen peroxide drip and terminate, slaking reaction was cooled to 60 ~ 65 DEG C after 1 ~ 1.5 hour, added whole film coalescence aid, stirring reaction is after 0.5 ~ 1 hour, be cooled to 45 DEG C, add whole mould inhibitors, obtained weathering resistance aqueous adhesive.
2. the preparation method of a kind of weathering resistance aqueous adhesive according to claim 1, is characterized in that: described protective colloid is complete alcoholysis polyvinyl alcohol RS-2117.
3. the preparation method of a kind of weathering resistance aqueous adhesive according to claim 1, is characterized in that: described linking agent is ferrous sulfate.
4. the preparation method of a kind of weathering resistance aqueous adhesive according to claim 1, is characterized in that: described cross-linking monomer is vinylbenzene.
5. the preparation method of a kind of weathering resistance aqueous adhesive according to claim 1, is characterized in that: described mould inhibitor is isothiazolinone biocide sanitas.
6. the preparation method of a kind of weathering resistance aqueous adhesive according to claim 1, is characterized in that: described defoamer is polysiloxane-based water-based defoamer.
7. the preparation method of a kind of weathering resistance aqueous adhesive according to claim 1, is characterized in that: described film coalescence aid is 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate or diethylene glycol dibenzoate.
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| CN102372885B (en) * | 2010-08-24 | 2015-08-05 | 中国石油化工集团公司 | A kind of high viscosity polyvinyl acetate emulsion and preparation method thereof |
| CN102977818B (en) * | 2012-11-29 | 2014-10-01 | 南通高盟新材料有限公司 | Water-based aluminium foil adhesive for cigarette packing and preparation method thereof |
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