CN101880349B - Cross linking type methyl acrylate and vinyl acetate emulsion and preparation method thereof - Google Patents
Cross linking type methyl acrylate and vinyl acetate emulsion and preparation method thereof Download PDFInfo
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Abstract
The invention provides cross linking type methyl acrylate and vinyl acetate emulsion and a preparation method thereof. The cross linking type methyl acrylate and vinyl acetate emulsion is prepared from 160 to 200 weight parts of vinyl acetate, 75 to 140 weight parts of butyl acrylate, 60 to 110 weight parts of acrylic acids, 5 to 20 weight parts of polyvinyl alcohol 1788, 5 to 8 weight parts of nonionic emulsifiers OP-10, 2 to 4 weight parts of neopelex, 5 to 7 weight parts of disodium hydrogen phosphate dodecahydrate, 0.7 to 1.5 weight parts of ammonium persulfate and 550 to 750 weight parts of vaal water. The preparation method comprises the following steps: making monomers into pre-emulsion; dissolving the ammonium persulfate to obtain triggering agent solution; dissolving the polyvinyl alcohol 1788; adding the emulsifiers and pH regulators; and carrying out intermittent reaction. The invention has the advantages of high water resistance performance, high heat resistance performance, high ageing resistance performance, good initial adhesion, high adhesion strength, no toxicity and harmlessness.
Description
Technical field
The present invention relates to a kind of cross linking type methyl acrylate and vinyl acetate emulsion and preparation method thereof, belong to the adhesive technology field.
Background technology
Various in the world at present naturality resource shortages, the various timber resources that are applied to house ornamentation on the market are famine especially.Various middle fibre density sheet material, the sheet in market adopt three-aldehyde glue more now, have brought serious pollution and harm for people's living environment.Along with the progress of science and technology, the development in market, many type materials have appearred in whole building materials market, like the PS composition board, are mainly used in billboard, each interlayer board of office, exhibition layout, family's ceiling board etc., belong to market novel light material, the market requirement is big.The PS plate is the facing plate a kind of commonly used that is applied in house decoration, building, the finishing field; But the glossy paper PVC material surface of PS plate has the transportable oily wax material of one deck; Be not just can bond firmly with general Vinyl Acetate Copolymer type cakingagent, and to release the bonding that is applied on PS sheet material and the glazing paper PVC material in the market all be the product that contains organic solvent.Be exactly to have " brand enterprise " same industry of suitable popularity all not have solution to have equivalents release tasteless, nontoxic, complete environmental-protecting performance more in the world.At present the content of development low-carbon economy just comprising nontoxic, harmless, do not have any volatility, not have the obnoxious flavour of pollution.
Generally be used for the PS composition board in the market two kinds of glue are arranged: 1, add and contain the tackifying resin of solvent with common white glues product, because contain poisonous hazardous solvent, not environmental protection, and corrosion PS foam; 2, mix the composite product that forms with other emulsion with conventional PVAC, it is water-fast, heat-resisting, loss of properties on aging.
Can improve water-fast, heat-resisting, the ageing-resistant performance of the bonding action and the product of product with cross linking type methyl acrylate and vinyl acetate emulsion, and can improve cementabilityly to some apolar substances, can enlarge the Application Areas of product and environment-protecting asepsis.Acrylic acid content is no more than 5% of total monomer amount in the conventional acrylate and vinyl acetate emulsion prescription, and this raw material is in case surpass above ratio, and is uncontrollable in the production, causes that particle is thick, viscosity is big.This major cause is: the monomeric reactivity ratios of a, several kinds are different, and reasonably copolymerization, crosslinked in the emulsification system of routine, and cause a certain monomer implode makes the particle chap, and molecular chain is oversize and cause viscosity too big, and is uncontrollable.B, since vinylformic acid than great, wetting ability is not easy to mix with vinyl acetate between to for plastic, Bing Xisuandingzhi, causes mix monomer inhomogeneous, can in vinylformic acid, add less water, emulsifying agent, vinyl acetate between to for plastic, Bing Xisuandingzhi, becomes pre-emulsion under the quick stirring.C, multi-component copolymer all will polymerizations under certain pH value situation in polymerization process, are between the 4-6 in the pH value generally, and it is unfavorable to polymerization to exceed this scope, and cause resistance to gather or implode.
Summary of the invention
The purpose of this invention is to provide a kind of environmental protection and have the decoration sizing agent product of water tolerance, thermotolerance and stability to aging preferably.
In order to achieve the above object; The invention provides a kind of cross linking type methyl acrylate and vinyl acetate emulsion; It is characterized in that, process by vinyl acetate 160-200 weight part, Bing Xisuandingzhi 75-140 weight part, vinylformic acid 60-110 weight part, Z 150PH 1788 5-20 weight parts, nonionic emulsifying agent OP-10 5-8 weight part, X 2073 2-4 weight part, disodium hydrogen phosphate dodecahydrate 5-7 weight part, ammonium persulphate 0.7-1.5 weight part and vaal water 550-750 weight part.
The present invention also provides the preparation method of above-mentioned cross linking type methyl acrylate and vinyl acetate emulsion, it is characterized in that, concrete steps are:
The first step, vinyl acetate 160-200 weight part, Bing Xisuandingzhi 75-140 weight part, vinylformic acid 60-110 weight part, nonionic emulsifying agent OP-10 5/3-8/3 weight part, X 2073 2/3-4/3 weight part and vaal water 100 weight parts are mixed, the 100-150rpm rotating speed is processed pre-emulsion under stirring;
Second goes on foot, ammonium persulphate 0.7-1.5 weight part is dissolved with vaal water 12 weight parts process initiator solution;
The 3rd step, in vaal water 438-638 weight part, add Z 150PH 1788 5-20 weight parts, be warming up to 90 ℃ of insulations 1-2 hour, after the dissolving, be cooled to 60 ℃ fully; Add nonionic emulsifying agent OP-10 10/3-16/3 weight part and X 2073 4/3-8/3 weight part, add disodium hydrogen phosphate dodecahydrate 5-7 weight part, stir; Be warming up to 70 ℃, drip the second step gained initiator solution of 1/5 amount and the first step gained pre-emulsion of 1/10 amount, be warming up to 80 ℃; Insulation reaction drips the second step gained initiator solution of 3/5 amount and the first step gained pre-emulsion of 3/10 amount to there not being backflow basically, adds in 2.5-3 hour; Insulation reaction is cooled to below 40 ℃ to not having backflow basically, leave standstill 5-16 hour after; Be warming up to 78 ℃-80 ℃ again, drip remaining initiator solution and pre-emulsion, added in 3-4 hour; Insulation reaction is warming up to 85-90 ℃ of insulation 1 hour, the cold filtration discharging again until there not being backflow basically.
Principle of the present invention is:
1, because the product of invention is a cross linking type methyl acrylate and vinyl acetate emulsion; Acrylic acid amount is very big; Account for about 25% of monomer total amount, the HLB value of former conventional emulsifier (hydrophilic, oleophylic value) does not just reach and has required, and the present invention strengthens the consumption of emulsifying agent in the letex polymerization; Adopt nonionic emulsifier OP-10 and anionic emulsifier X 2073 to be made into mixed emulsifier according to a certain percentage simultaneously; Contain the needed emulsification system of the acrylic acid mix monomer of excess thereby reach to meet, make mix monomer polymerization stably, to reach the purpose that the control molecular weight increases fast.The molecular formula of nonionic emulsifier OP-10 is following:
.
2, in protective colloid, increase the consumption of PH buffer reagent, can solve, influence polymerization, cause implode or excessive crosslinked, make the letex polymerization failure because of the excessive meta-acid that produces pH value of vinylformic acid in the monomer.
3, above two kinds of schemes can solve solid content in the polymerization below 30%, but to solid content greater than 30% product, only depend on these two kinds of schemes not enough; Must adopt the batchwise polymerization method again, promptly in reaction process, adopt batchwise polymerization; Macromole is no longer infinitely increased, and molecular chain no longer continues lengthening, stage feeding polymerization; Can control molecular weight like this, produce qualified cross linking type methyl acrylate and vinyl acetate emulsion.
4, increase emulsifying agent, increase the PH buffer reagent, just implode does not take place with resistance gathers in control, can only play steady polymeric effect to reacting; But the linking agent bridging property in the cross linking type methyl acrylate and vinyl acetate is very strong, when pre-emulsion is added drop-wise to 30% left and right sides of total amount, only depends on above two kinds of methods can't stop molecular weight further to increase, and at this moment molecular chain has all reached a certain amount of; Intermolecular density causes polymerization velocity to accelerate, and product viscosity is sharply risen, in this case; Take to interrupt reaction, stop polymerization, temperature drops to below 40 ℃; Make reaction not have the condition of repolymerization, thereby control its viscosity, and then recover polymerization; So new emulsive molecule be difficult to originally the polymeric molecular chain link, finally promptly improved solid content again within the specific limits with product viscosity control, produce qualified cross linking type methyl acrylate and vinyl acetate emulsion.
Advantage of the present invention is:
1, acrylic acid amount is the 20-28% of monomer total amount, thereby has improved water tolerance, thermotolerance and the stability to aging of cross linking type methyl acrylate and vinyl acetate emulsion.
2, new polymerization technology has solved excess adding vinylformic acid (linking agent) employing rhythmic reaction, and the method for stage feeding polymerization has been controlled the viscosity of cross linking type methyl acrylate and vinyl acetate emulsion effectively.
3, the present invention adopts best innovation prescription and technological operation circuit; Improved the rhythmic reaction synthesis route of film forming properties, gluing performance and the over-all properties of emulsion; Carry out the performance supplemental links, thereby improve and improved snappiness, bonding action and the best film-forming properties of glue greatly.
4, tack is good, and bonding action is high, water-tolerant, and ageing-resistant performance is good, processes glued membrane to this glue with common acrylate and vinyl acetate emulsion is processed glued membrane, uses water drip test, and rising to more than one times the gonorrhoea time appears in the comparison water tolerance.The pH value does not have influence near neutral to the PS foam material, ability gluing timber and PS foam material, and the cold applying of ability normal temperature, the stickup composite curing time is fast, uses technology convenient, does not contain any organic solvent, reaches GB 18583-2001 and the GPS of European Union requirement standard respectively.
5, nontoxic, harmless, do not have any volatility, do not have the obnoxious flavour that pollutes.
Embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment 1
Vinyl acetate 200 weight parts, Bing Xisuandingzhi 140 weight parts, vinylformic acid 110 weight parts, nonionic emulsifying agent OP-10 8/3 weight part, X 2073 4/3 weight part and vaal water 100 weight parts are mixed, and it is subsequent use to process pre-emulsion under the 120rpm rotating speed stirs; It is subsequent use that ammonium persulphate 1.5 weight parts are processed initiator solution with the dissolving of vaal water 12 weight parts;
In vaal water 638 weight parts, add Z 150PH 1,788 20 weight parts, be warming up to 90 ℃ of insulations 2 hours, after the dissolving, be cooled to 60 ℃ fully; Add nonionic emulsifying agent OP-10 16/3 weight part and X 2073 8/3 weight part, add disodium hydrogen phosphate dodecahydrate 7 weight parts, stir, be warming up to 70 ℃; Drip the 3rd step gained initiator solution of 1/5 amount and the second step gained pre-emulsion of 1/10 amount, be warming up to 80 ℃, reaction solution blueing light, insulation reaction is about 1 hour; To there not being backflow basically, drip the 3rd step gained initiator solution of 3/5 amount and the second step gained pre-emulsion of 3/10 amount, added in 3 hours; Insulation reaction is cooled to below 40 ℃ to not having backflow basically, leave standstill 10 hours after; Be warming up to 80 ℃ again, drip remaining initiator solution and pre-emulsion, added in 4 hours; Insulation reaction is warming up to 90 ℃ of insulations 1 hour, the cold filtration discharging again until there not being backflow basically.Gained emulsion solids content is about 37.8%, the about 200000mpa.s of viscosity, PH:4-6.Water tolerance: process glued membrane to emulsion and do water drip test.See attached list:
| Name of product | Acrylate and vinyl acetate emulsion | Contain the acrylic acid cross linking type methyl acrylate and vinyl acetate emulsion of 3% monomer | Contain the acrylic acid cross linking type methyl acrylate and vinyl acetate emulsion of 25% monomer |
| The time that the gonorrhoea phenomenon occurs | 2 minutes 30 seconds | 3 minutes 50 seconds | 8 minutes 06 second |
Embodiment 2
Vinyl acetate 160 weight parts, Bing Xisuandingzhi 75 weight parts, vinylformic acid 60 weight parts, nonionic emulsifying agent OP-10 5/3 weight part, X 2073 2/3 weight part and vaal water 100 weight parts are mixed, and it is subsequent use to process pre-emulsion under the 110rpm rotating speed stirs; It is subsequent use that ammonium persulphate 1 weight part is processed initiator solution with the dissolving of vaal water 12 weight parts;
In vaal water 438 weight parts, add Z 150PH 1,788 5 weight parts, be warming up to 90 ℃ of insulations 1 hour, after the dissolving, be cooled to 60 ℃ fully; Add nonionic emulsifying agent OP-10 10/3 weight part and X 2073 4/3 weight part, add disodium hydrogen phosphate dodecahydrate 5 weight parts, stir, be warming up to 70 ℃; Drip the 3rd step gained initiator solution of 1/5 amount and the second step gained pre-emulsion of 1/10 amount, be warming up to 80 ℃, reaction solution blueing light, insulation reaction is about 1 hour; To there not being backflow basically, drip the 3rd step gained initiator solution of 3/5 amount and the second step gained pre-emulsion of 3/10 amount, added in 2.5 hours; Insulation reaction is cooled to below 40 ℃ to not having backflow basically, leave standstill 6 hours after; Be warming up to 78 ℃ again, drip remaining initiator solution and pre-emulsion, added in 3 hours; Insulation reaction is warming up to 85 ℃ of insulations 1 hour, the cold filtration discharging again until there not being backflow basically.Gained emulsion solids content is about 34.7%, the about 20000mpa.s of viscosity, PH:4-6.Water tolerance: the water drip test time reaches 7 minutes and 59 seconds.
Embodiment 3
Vinyl acetate 180 weight parts, Bing Xisuandingzhi 120 weight parts, vinylformic acid 100 weight parts, nonionic emulsifying agent OP-10 2.2 weight parts, X 2073 1.1 weight parts and vaal water 100 weight parts are mixed, and it is subsequent use to process pre-emulsion under the 120rpm rotating speed stirs; It is subsequent use that ammonium persulphate 1.2 weight parts are processed initiator solution with the dissolving of vaal water 12 weight parts;
In vaal water 453.1 weight parts, add Z 150PH 1,788 18 weight parts, be warming up to 90 ℃ of insulations 1 hour, after the dissolving, be cooled to 60 ℃ fully; Add nonionic emulsifying agent OP-10 4.4 weight parts and X 2073 2.2 weight parts, add disodium hydrogen phosphate dodecahydrate 5.8 weight parts, stir, be warming up to 70 ℃; Drip the 3rd step gained initiator solution of 1/5 amount and the second step gained pre-emulsion of 1/10 amount, be warming up to 80 ℃, reaction solution blueing light, insulation reaction is about 1 hour; To there not being backflow basically, drip the 3rd step gained initiator solution of 3/5 amount and the second step gained pre-emulsion of 3/10 amount, added in 2.5 hours; Insulation reaction is cooled to below 40 ℃ to not having backflow basically, leave standstill 5 hours after; Be warming up to 78 ℃ again, drip remaining initiator solution and pre-emulsion, added in 3 hours; Insulation reaction is warming up to 85 ℃ of insulations 1 hour, the cold filtration discharging again until there not being backflow basically.Gained emulsion solids content is about 41.5%, the about 200000mpa.s of viscosity, PH:4-6.Water tolerance: the water drip test time reaches 9 minutes and 06 second.
Embodiment 4
Vinyl acetate 112 weight parts, Bing Xisuandingzhi 75 weight parts, vinylformic acid 62.3 weight parts, nonionic emulsifying agent OP-10 2.2 weight parts, X 2073 1.1 weight parts and vaal water 100 weight parts are mixed, and it is subsequent use to process pre-emulsion under the 120rpm rotating speed stirs; It is subsequent use that ammonium persulphate 0.7 weight part is processed initiator solution with the dissolving of vaal water 12 weight parts;
In vaal water 614.3 weight parts, add Z 150PH 1,788 8 weight parts, be warming up to 90 ℃ of insulations 1 hour, after the dissolving, be cooled to 60 ℃ fully; Add nonionic emulsifying agent OP-10 4.4 weight parts and X 2073 2.2 weight parts, add disodium hydrogen phosphate dodecahydrate 5.8 weight parts, stir, be warming up to 70 ℃; Drip the 3rd step gained initiator solution of 1/5 amount and the second step gained pre-emulsion of 1/10 amount, be warming up to 80 ℃, reaction solution blueing light, insulation reaction is about 1 hour; To there not being backflow basically, drip the 3rd step gained initiator solution of 3/5 amount and the second step gained pre-emulsion of 3/10 amount, added in 2.5 hours; Insulation reaction is cooled to below 40 ℃ to not having backflow basically, leave standstill 8 hours after; Be warming up to 78 ℃ again, drip remaining initiator solution and pre-emulsion, added in 3 hours; Insulation reaction is warming up to 85 ℃ of insulations 1 hour, the cold filtration discharging again until there not being backflow basically.Gained emulsion solids content is about 25.7%, the about 20000mpa.s of viscosity, PH:4-6.Water tolerance: the water drip test time reaches 9 minutes and 10 seconds.
Claims (2)
1. cross linking type methyl acrylate and vinyl acetate emulsion; It is characterized in that; Processed by vinyl acetate 160-200 weight part, Bing Xisuandingzhi 75-140 weight part, vinylformic acid 60-110 weight part, Z 150PH 1788 5-20 weight parts, nonionic emulsifying agent OP-10 5-8 weight part, X 2073 2-4 weight part, disodium hydrogen phosphate dodecahydrate 5-7 weight part, ammonium persulphate 0.7-1.5 weight part and vaal water 550-750 weight part, its preparation method is:
The first step, vinyl acetate 160-200 weight part, Bing Xisuandingzhi 75-140 weight part, vinylformic acid 60-110 weight part, nonionic emulsifying agent OP-10 5/3-8/3 weight part, X 2073 2/3-4/3 weight part and vaal water 100 weight parts are mixed, the 100-150rpm rotating speed is processed pre-emulsion under stirring;
Second goes on foot, ammonium persulphate 0.7-1.5 weight part is dissolved with vaal water 12 weight parts process initiator solution;
The 3rd step, in vaal water 438-638 weight part, add Z 150PH 1788 5-20 weight parts, be warming up to 90 ℃ of insulations 1-2 hour, after the dissolving, be cooled to 60 ℃ fully; Add nonionic emulsifying agent OP-10 10/3-16/3 weight part and X 2073 4/3-8/3 weight part, add disodium hydrogen phosphate dodecahydrate 5-7 weight part, stir; Be warming up to 70 ℃, drip the second step gained initiator solution of 1/5 amount and the first step gained pre-emulsion of 1/10 amount, be warming up to 80 ℃; Insulation reaction drips the second step gained initiator solution of 3/5 amount and the first step gained pre-emulsion of 3/10 amount to there not being backflow basically, adds in 2.5-3 hour; Insulation reaction is cooled to below 40 ℃ to not having backflow basically, leave standstill 5-16 hour after; Be warming up to 78 ℃-80 ℃ again, drip remaining initiator solution and pre-emulsion, added in 3-4 hour; Insulation reaction is warming up to 85-90 ℃ of insulation 1 hour, the cold filtration discharging again until there not being backflow basically.
2. the preparation method of the described cross linking type methyl acrylate and vinyl acetate emulsion of claim 1 is characterized in that, concrete steps are:
The first step, vinyl acetate 160-200 weight part, Bing Xisuandingzhi 75-140 weight part, vinylformic acid 60-110 weight part, nonionic emulsifying agent OP-10 5/3-8/3 weight part, X 2073 2/3-4/3 weight part and vaal water 100 weight parts are mixed, the 100-150rpm rotating speed is processed pre-emulsion under stirring;
Second goes on foot, ammonium persulphate 0.7-1.5 weight part is dissolved with vaal water 12 weight parts process initiator solution;
The 3rd step, in vaal water 438-638 weight part, add Z 150PH 1788 5-20 weight parts, be warming up to 90 ℃ of insulations 1-2 hour, after the dissolving, be cooled to 60 ℃ fully; Add nonionic emulsifying agent OP-10 10/3-16/3 weight part and X 2073 4/3-8/3 weight part, add disodium hydrogen phosphate dodecahydrate 5-7 weight part, stir; Be warming up to 70 ℃, drip the second step gained initiator solution of 1/5 amount and the first step gained pre-emulsion of 1/10 amount, be warming up to 80 ℃; Insulation reaction drips the second step gained initiator solution of 3/5 amount and the first step gained pre-emulsion of 3/10 amount to there not being backflow basically, adds in 2.5-3 hour; Insulation reaction is cooled to below 40 ℃ to not having backflow basically, leave standstill 5-16 hour after; Be warming up to 78 ℃-80 ℃ again, drip remaining initiator solution and pre-emulsion, added in 3-4 hour; Insulation reaction is warming up to 85-90 ℃ of insulation 1 hour, the cold filtration discharging again until there not being backflow basically.
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| CN1524911A (en) * | 2003-02-24 | 2004-09-01 | 中国科学院成都有机化学研究所 | Preparing process for environment-friendly type vinyl acetate adhesive |
| CN1268658C (en) * | 2004-03-17 | 2006-08-09 | 中国科学院广州化学研究所 | Water dispersion type emulsion of crylic acid, preparation method and usage |
| CN100381530C (en) * | 2006-01-12 | 2008-04-16 | 珠海元盛电子科技股份有限公司 | Prossure sensitive glue and its compounding method |
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Effective date of registration: 20210120 Address after: Yan Jiang Zhen Shui Yang Cun, Linhai City, Taizhou City, Zhejiang Province Patentee after: DINGLI NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 201108, No. 1038 Jin Du Road, Shanghai, Minhang District Patentee before: SHANGHAI DONGHE ADHESIVE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Yan Jiang Zhen Shui Yang Cun, Linhai City, Taizhou City, Zhejiang Province Patentee after: Dingli New Material Technology Co.,Ltd. Address before: Yan Jiang Zhen Shui Yang Cun, Linhai City, Taizhou City, Zhejiang Province Patentee before: DINGLI NEW MATERIAL TECHNOLOGY CO.,LTD. |