CN101343516B - API glue host and preparation method - Google Patents
API glue host and preparation method Download PDFInfo
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- CN101343516B CN101343516B CN2008101369855A CN200810136985A CN101343516B CN 101343516 B CN101343516 B CN 101343516B CN 2008101369855 A CN2008101369855 A CN 2008101369855A CN 200810136985 A CN200810136985 A CN 200810136985A CN 101343516 B CN101343516 B CN 101343516B
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Abstract
The invention relates to host crystal of an adhesive and the preparation method, in particular relates to host crystal of API adhesive and the preparation method. The host crystal of the API adhesive solves the problem in the prior art that the water resistance, the release quantity of formaldehyde and the manufacturing cost of the host crystal of the adhesive are not ideal. The host crystal of the API adhesive is made from water, polyvinyl alcohol, emulsifying agent, antifoaming agent, plasticizer, initiating agent, vinyl acetate monomer, unsaturated amide monomer aqueous solution with active hydrogen, amylum, anti-corrosive agent and the aqueous solution of catalytic agent. The preparation steps are the followings: polyvinyl alcohol solution is prepared; auxiliary agent and a certain amount of vinyl acetate monomer are added in the polyvinyl alcohol solution, after completely dissolving, the initiating agent is added, then the vinyl acetate monomer and the unsaturated amide monomer aqueous solution with active hydrogen are added in the solution, and through copolymerizing, decreasing the temperature and adjusting the pH value; the amylum dispersed liquid and the aqueous solutionof the catalytic agent are added, after heating and stirring, the host crystal of the API adhesive is obtained. The host crystal of the API adhesive has the advantages of high water resistance, environment protection and low cost. The preparation method has the advantages of simple manufacturing technique, convenient operation and wide application.
Description
Technical field
The present invention relates to a kind of preparation method of glue host.
Background technology
Polyvinyl acetate (PVA) mainly is to play the effect of tackiness agent host in isocyanic ester (API) glue, also is the main component of API glue.Polyvinyl acetate emulsion adhesive is widely used in fields such as weaving, building, light industry, papermaking, wood working and automobile.But because this body structure of polyvinyl acetate (PVA) and production process, the ubiquity poor water resistance is come unstuck easily; Made number of research projects in order to improve polyvinyl acetate (PVA) homopolymerization emulsion property both at home and abroad, what have adds aldehydes in building-up process, under acidic conditions, protective colloid PVA is carried out the acetalation modification, improve the hydrophobicity of emulsion, but inevitably there is the formaldehyde of some free formaldehydes and release in this in emulsion, and formaldehyde release not only brings pollution to environment, and human body is also had harm; Polyvinyl acetate emulsion adhesive production cost height.These defectives have influenced aqueous polyvinyl acetate emulsion and have used more widely.
Summary of the invention
The objective of the invention is poor water resistance, burst size of methanal height and the high problem of production cost, and the preparation method of API glue host is provided in order to solve API glue host in the prior art.
The API glue host by ratio of weight and the number of copies by 600.0～770.0 parts of water, 40.0～50.0 parts of polyvinyl alcohol, 2.0～8.0 parts of emulsifying agents, 10.0～15.0 parts of defoamers, 11.0～15.0 parts of softening agent, 0.4～0.5 part of initiator, 400.0～500.0 parts of Vinyl Acetate Monomers, 4.0～18.0 parts contain active hydrogen unsaturated amides monomer solution, 100.0～200.0 parts of starch, 2.0～12.5 portions of sanitass and 10.0～30.0 parts of aqueous catalyst solutions and make.
The preparation method of API glue host realizes according to the following steps: one, by ratio of weight and the number of copies 400.0～520.0 parts of water and 40.0～50.0 parts of polyvinyl alcohol are joined in the reactor, stir, heat, be warming up to 80～93 ℃, treat to be cooled to 50～80 ℃ again after polyvinyl alcohol dissolves fully, make polyvinyl alcohol solution; Two, in above-mentioned polyvinyl alcohol solution, add 2.0～8.0 parts of emulsifying agents, 11.0～15.0 parts of softening agent, 10.0～15.0 parts of defoamers and 40.0～50.0 parts of Vinyl Acetate Monomers, add 0.2～0.25 part of initiator again after the dissolving fully, heating, be warming up to 75 ℃, to reactor, there is not backflow, add 350.0～450.0 parts of Vinyl Acetate Monomers and 4.0～18.0 parts in the reactor and contain active hydrogen unsaturated amides monomer solution, and mixeding liquid temperature is 80 ℃ in the control reactor, carry out polyreaction, after finishing, reaction is cooled to 30～40 ℃, adjust pH 4～7; Three, by ratio of weight and the number of copies 100.0～200.0 parts of starch, 200.0～250.0 parts of water and 2.0～12.5 portions of sanitass are joined stirring in another reactor, are heated to 50～80 ℃, cool to 40～60 ℃ after 3 hours, adjust pH 4～8 is made starch dispersion liquid; Four, the starch dispersion liquid that makes in the step 3 and 10.0～30.0 parts aqueous catalyst solution are joined in the mixed solution that makes in the step 2,, promptly get the API glue host 40 ℃ of following stirring heating half hours; Described aqueous catalyst solution is made up of solid solute and sulphuric acid soln; Solid solute is one or more in ammonium chloride, aluminum chloride, iron(ic) chloride, cupric chloride, zinc chloride, calcium chloride, ammonium sulfate, ferric sulfate, copper sulfate, the sal epsom; The concentration of sulphuric acid soln is 0.05～0.10mol/L; Solid solute accounts for 5%～30% of aqueous catalyst solution gross weight.
The present invention has added comonomer in polymerization process, the multipolymer that generates makes between the molecular chain crosslinked under heat and catalyzer existence condition, make white glue with vinyl change into heat curing-type by the thermoplastics type, increase the water tolerance of white glue with vinyl, wet bonding strength with these gluing three layers of wood gluing plates that connect reaches 0.8MPa, than the raising that does not add comonomer 110%; Butter is as catalyzer, under hot pressing condition, catalyzer impels in the emulsion and is cross-linked with each other between the molecular chain, has improved the water resistance of API glue host, its wet bonding strength reaches 1.0MPa after adding catalyzer, improves nearly 20% than the API glue host that does not add catalyzer; Starch dispersion liquid had both reduced the production cost of API glue host as the adding of weighting agent, and was lower by 20%～40% than the production cost of the API glue host that does not add starch dispersion liquid, can guarantee every performance of emulsion simultaneously again; The preparation whole process is not added formaldehyde, though this gluing wood gluing plate that connects can be measured release formaldehyde, but burst size is very little, only be 0.007～0.014mg/L, well below national normal value, formaldehyde is released burst size (desiccating method) national standard E0 level≤0.5mg/L in the glued board, has guaranteed the feature of environmental protection of product; This API glue host mixes with the isocyanates linking agent, and three layers of wood single-plate are through applying glue hot pressing, and its wet bonding strength is 1.5MPa, has improved 50% with respect to the API glue host that does not add isocyanic ester.(wet bonding strength is meant that three layers of glued board test specimen leave standstill 3h in 63 ℃ water-bath, takes out the back and soak 10min in cold water, immediately test specimen is carried out the tensile strength test.)
The present invention can be applicable to that beech, oak, birch, maple, walnut, teak, rice straw and wheat straw etc. are hard, composition board, glued board, integrated timber and all kinds of articles for use made of paper of soft wood and non-wooden material.Production unit required for the present invention is simple, and is easy to operate, and raw material sources are extensive, with low cost.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment API glue host is by ratio of weight and the number of copies by 600.0～770.0 parts of water, 40.0～50.0 parts of polyvinyl alcohol, 2.0～8.0 parts of emulsifying agents, 10.0～15.0 parts of defoamers, 11.0～15.0 parts of softening agent, 0.4～0.5 part of initiator, 400.0～500.0 parts of Vinyl Acetate Monomers, 4.0～18.0 parts contain active hydrogen unsaturated amides monomer solution, 100.0～200.0 parts of starch, 2.0～12.5 portions of sanitass and 10.0～30.0 parts of aqueous catalyst solutions are made.
Embodiment two: present embodiment and embodiment one are different be the API glue host by ratio of weight and the number of copies by 660.0 parts of water, 45.0 parts of polyvinyl alcohol, 5.0 parts of emulsifying agents, 12.0 parts of defoamers, 13.0 parts of softening agent, 0.45 part of initiator, 450.0 parts of Vinyl Acetate Monomers, 10.0 parts contain active hydrogen unsaturated amides monomer solution, 150.0 parts of starch, 7.0 portions of sanitass and 20.0 parts of aqueous catalyst solutions and make.Other is identical with embodiment one.
Embodiment three: present embodiment is different with embodiment one or two is that emulsifying agent is one or more the mixing in OP-10, tween 80, the sodium lauryl sulphate.Other is identical with embodiment one or two.
In the present embodiment emulsifying agent consist of two or more the time, each component is pressed arbitrary proportion and is mixed.
Embodiment four: what present embodiment was different with embodiment one or two is that defoamer is dimethyl silicone oil, organosilicon water-in-oil emulsion or THIX-288 polyethers GPE.Other is identical with embodiment one or two.
Embodiment five: what present embodiment was different with embodiment one or two is that softening agent is dibutyl phthalate or tributyl phosphate.Other is identical with embodiment one or two.
Embodiment six: what present embodiment was different with embodiment one or two is that initiator is ammonium persulphate or Potassium Persulphate or peroxophosphoric acid sodium.Other is identical with embodiment one or two.
Embodiment seven: present embodiment is different with embodiment one or two is that the massfraction that contains active hydrogen unsaturated amides monomer solution is 20%～50%.Other is identical with embodiment one or two.
Containing active hydrogen unsaturated amides monomer solution in the present embodiment is N hydroxymethyl acrylamide monomer solution, N-methoxymethyl propenamide monomer solution or the N-isobutyl oxygen methyl acrylamide monomer aqueous solution.
Embodiment eight: what present embodiment was different with embodiment one or two is that polyvinyl alcohol is 1799 types or 1899 types.Other is identical with embodiment one or two.
Embodiment nine: what present embodiment was different with embodiment one or two is that aqueous catalyst solution is made up of solid solute and sulphuric acid soln; Solid solute is one or more in ammonium chloride, aluminum chloride, iron(ic) chloride, cupric chloride, zinc chloride, calcium chloride, ammonium sulfate, ferric sulfate, copper sulfate, the sal epsom; The concentration of sulphuric acid soln is 0.05～0.10mol/L; Solid solute accounts for 5%～30% of aqueous catalyst solution gross weight.Other is identical with embodiment one or two.
Ammonium chloride in the present embodiment, aluminum chloride, iron(ic) chloride, cupric chloride, zinc chloride, calcium chloride, ammonium sulfate, ferric sulfate, copper sulfate, when sal epsom is two or more, each component is pressed arbitrary proportion and is mixed.
Embodiment ten: present embodiment API glue host prepares according to the following steps: one, by ratio of weight and the number of copies 400.0～520.0 parts of water and 40.0～50.0 parts of polyvinyl alcohol are joined stirring in the reactor, heating, be warming up to 80～93 ℃, treat to be cooled to 50～80 ℃ again after polyvinyl alcohol dissolves fully, make polyvinyl alcohol solution; Two, in the reactor of above-mentioned polyvinyl alcohol solution, add 2.0～8.0 parts of emulsifying agents, 11.0～15.0 parts of softening agent, 10.0～15.0 parts of defoamers and 40.0～50.0 parts of Vinyl Acetate Monomers, add 0.2～0.25 part of initiator again after the dissolving fully, heating, be warming up to 75 ℃, to reactor, there is not backflow, add 350.0～450.0 parts of Vinyl Acetate Monomers and 4.0～18.0 parts in the reactor and contain active hydrogen unsaturated amides monomer solution, and mixeding liquid temperature is 80 ℃ in the control reactor, carry out polyreaction, after finishing, reaction is cooled to 30～40 ℃, adjust pH 4～7; Three, by ratio of weight and the number of copies 100.0～200.0 parts of starch, 200.0～250.0 parts of water and 2.0～12.5 portions of sanitass are joined stirring in the reactor, are heated to 50～80 ℃, cool to 40～60 ℃ after 3 hours, adjust pH 4～8 is made starch dispersion liquid; Four, the starch dispersion liquid that makes in the step 3 and 10.0～30.0 parts aqueous catalyst solution are joined in the mixed solution that makes in the step 2,, promptly get the API glue host 40 ℃ of following stirring heating half hours.
Embodiment 11: present embodiment API glue host prepares according to the following steps: one, by ratio of weight and the number of copies 460.0 parts of water and 45.0 parts of polyvinyl alcohol are joined stirring in the reactor, heating, be warming up to 85 ℃, treat to be cooled to 60 ℃ again after polyvinyl alcohol dissolves fully, make polyvinyl alcohol solution; Two, in the reactor of above-mentioned polyvinyl alcohol solution, add 5.0 parts of emulsifier op-10s, 12.0 parts of dibutyl phthalates, 12.0 parts of dimethyl silicone oils and 45.0 parts of Vinyl Acetate Monomers, after the dissolving fully, add 0.22 part of ammonium persulphate, heating, be warming up to 75 ℃, to reactor, there is not backflow, in reactor, add 400.0 parts of Vinyl Acetate Monomers and 10.0 parts of N-butoxymethyl acrylamide monomer solutions, and mixeding liquid temperature is 80 ℃ in the control reactor, carry out polyreaction, after finishing, reaction is cooled to 35 ℃, adjust pH 6; Three, by ratio of weight and the number of copies 150 parts of starch, 220.0 parts of water and 8.0 portions of sanitass are joined in another reactor, stir, be heated to 70 ℃, cool to 50 ℃ after 3 hours, adjust pH 6 is made starch dispersion liquid; Four, the starch dispersion liquid that makes in the step 3 and 20.0 parts aqueous catalyst solution are joined in the mixed solution that makes in the step 2,, promptly get the API glue host 40 ℃ of following stirring heating half hours.
The outward appearance of gained API glue host is milky white thick colloid in the present embodiment; Solid content is 30%～70%; Viscosity is 2.5～24.8MPas; Storage stability is better, under 60 ℃, places 20h, and glue is stablized not stratified; The wet bonding strength of three layers of gluing birch plywood is 1.2～1.4MPa; The burst size of methanal of glued board is 0.005～0.013mg/L.
Claims (1)
1.API the preparation method of glue host, the preparation method who it is characterized in that the API glue host carries out according to the following steps: one, by ratio of weight and the number of copies 400.0～520.0 parts of water and 40.0～50.0 parts of polyvinyl alcohol are joined stirring in the reactor, heating, be warming up to 80～93 ℃, treat to be cooled to 50～80 ℃ again after polyvinyl alcohol dissolves fully, make polyvinyl alcohol solution; Two, in the reactor of above-mentioned polyvinyl alcohol solution, add 2.0～8.0 parts of emulsifying agents, 11.0～15.0 parts of softening agent, 10.0～15.0 parts of defoamers and 40.0～50.0 parts of Vinyl Acetate Monomers, add 0.2～0.25 part of initiator again after the dissolving fully, heating, be warming up to 75 ℃, to reactor, there is not backflow, add 350.0～450.0 parts of Vinyl Acetate Monomers and 4.0～18.0 parts in the reactor and contain active hydrogen unsaturated amides monomer solution, and mixeding liquid temperature is 80 ℃ in the control reactor, carry out polyreaction, after finishing, reaction is cooled to 30～40 ℃, adjust pH 4～7; Three, by ratio of weight and the number of copies 100.0～200.0 parts of starch, 200.0～250.0 parts of water and 2.0～12.5 portions of sanitass are joined stirring in another reactor, are heated to 50～80 ℃, cool to 40～60 ℃ after 3 hours, adjust pH 4～8 is made starch dispersion liquid; Four, the starch dispersion liquid that makes in the step 3 and 10.0～30.0 parts aqueous catalyst solution are joined in the mixed solution that makes in the step 2,, promptly get the API glue host 40 ℃ of following heated and stirred half hours; Wherein the massfraction that contains active hydrogen unsaturated amides monomer solution described in the step 2 is 20%～50%; Aqueous catalyst solution described in the step 4 is made up of solid solute and sulphuric acid soln; Solid solute is one or more in ammonium chloride, aluminum chloride, iron(ic) chloride, cupric chloride, zinc chloride, calcium chloride, ammonium sulfate, ferric sulfate, copper sulfate, the sal epsom; The concentration of sulphuric acid soln is 0.05～0.10mol/L; Solid solute accounts for 5%～30% of aqueous catalyst solution gross weight.
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| CN2008101369855A CN101343516B (en) | 2008-08-22 | 2008-08-22 | API glue host and preparation method |
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| CN2008101369855A CN101343516B (en) | 2008-08-22 | 2008-08-22 | API glue host and preparation method |
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| CN101343516A CN101343516A (en) | 2009-01-14 |
| CN101343516B true CN101343516B (en) | 2010-08-18 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102485820A (en) * | 2010-12-06 | 2012-06-06 | 圣象实业（江苏）有限公司 | White emulsion with environmental protection and high viscosity and its preparation method |
| CN102031083A (en) * | 2010-12-10 | 2011-04-27 | 湖南福湘木业有限责任公司 | Plywood adhesive |
| CN103289610B (en) * | 2013-06-13 | 2015-08-26 | 廊坊三利木业有限公司 | Rapid-curing cutback waterproof overlay glue |
| CN103952107B (en) * | 2014-04-22 | 2016-05-18 | 四川省奥宁太阳能科技有限公司 | Fast bonding agent and preparation method thereof and application for heating floor |
| CN104673147A (en) * | 2015-01-28 | 2015-06-03 | 海安县紫石涂料有限公司 | Strong water-resistant white emulsion and preparation method thereof |
| CN104673148A (en) * | 2015-01-28 | 2015-06-03 | 南通市鸿瑞化工有限公司 | Environmental-friendly adhesive and preparation method thereof |
| CN104726042B (en) * | 2015-01-28 | 2016-09-07 | 南通市鸿瑞化工有限公司 | High-strength glue |
| CN106010362A (en) * | 2016-07-01 | 2016-10-12 | 宋俊柳 | Composite adhesive |
| CN110872481B (en) * | 2018-08-30 | 2022-02-18 | 万华化学集团股份有限公司 | Adhesive for aldehyde-free plywood and preparation method thereof, plywood and preparation method thereof |
| CN111995971A (en) * | 2020-09-07 | 2020-11-27 | 顶立新材料科技有限公司 | Environment-friendly high-frequency assembly adhesive and preparation method thereof |
| CN114147821A (en) * | 2021-12-06 | 2022-03-08 | 德华兔宝宝装饰新材股份有限公司 | Preparation method of aldehyde-free recombined decorative veneer |
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