CN103865441A - Moisture-proof high-temperciance environment-friendly white latex and preparation method thereof - Google Patents
Moisture-proof high-temperciance environment-friendly white latex and preparation method thereof Download PDFInfo
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- CN103865441A CN103865441A CN201410112098.XA CN201410112098A CN103865441A CN 103865441 A CN103865441 A CN 103865441A CN 201410112098 A CN201410112098 A CN 201410112098A CN 103865441 A CN103865441 A CN 103865441A
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Abstract
The invention provides a formula of a moisture-proof high-temperciance environment-friendly white latex, which relates to improvement of the formula of the white latex and aims to solve the problems of low production efficiency and the like which are caused by the large moisture content, the slow curing speed and the like of laminated woods during a production process. The white latex provided by the invention is prepared from the following components in parts by weight: 40 to 50 parts of deionized water, 6 to 10 parts of polyvinyl alcohol, 30 to 45 parts of vinyl acetate, 0.5 to 1.2 parts of an initiator, 0.05 to 0.1 part of tartaric acid, 0.01 to 0.02 part of sodium bicarbonate, 5 to 10 parts of a modifier and 0.2 to 2 parts of a plasticizer. Based on the basic preparation process of the existing white latex, functional groups and an additive which are capable of changing the performance of the white latex are added, so that the vinyl acetate-based water latex which has the high moisture strength and the rapid curing speed and can meet the assembling requirement of the laminated woods with a large humidity is obtained. Thus, the machining time of workpieces is shortened.
Description
Technical field
The present invention relates to a kind of sizing agent, specifically, relate to just sticky environmental protection white glue with vinyl of a kind of emulsion-type moisture-proof height, also relate to its preparation technology.
Background technology
White glue with vinyl, i.e. acetate emulsion, is a kind of thermoplastic adhesive that vinyl acetate between to for plastic makes by letex polymerization.Nineteen thirty-seven, the W.Starck of method our company and Frendeberg have invented and have adopted polyvinyl alcohol to carry out the method for Emulsion Polymerization of Vinyl Acetate as protection glue, and this invention has promoted the development of Polyethylene Acetate Emulsion Industry greatly.Manufacture field at Cabinetmaker, the sizing agent general layout taking white glue with vinyl as main body does not change substantially, and white glue with vinyl is also the auxiliary material of one of decorations industry large usage quantity.White glue with vinyl because it has that adhesive property is good, safety and environmental protection, the advantage such as economize on resources, be deeply subject to people's favor and attention.Its application is increasingly extensive, current one of the emulsion class tackiness agent that China gives priority to that become.
The conventional preparation method of white glue with vinyl is that employing polyvinyl alcohol is protective colloid, is obtained by free radical reaction polymerization by vinyl acetate between to for plastic.White glue with vinyl water tolerance prepared by this method is poor, and easily moisture absorption is easily come unglued in wet environment, at high temperature uses and can produce creep, and this all can cause the decline of Joint strength.The major cause of poor water resistance is that in white glue with vinyl, the main group that plays gluing effect is the molecular chain that contains great amount of hydroxy group, hydroxyl itself is exactly hydrophilic radical, and in the situation that meeting water, hydroxyl itself moves together with macromolecular chain, cause the strength degradation of glue-line, so that creep.As a same reason, in the situation that timber water capacity is large, there is the problems such as consolidation strength declines, and the parts-moulding time is long.This defect is difficult to meet the requirement of practical application, has also limited to a great extent the application of white glue with vinyl.
In order to improve the water tolerance of white glue with vinyl, a lot of people have carried out the research of this respect.Patent 02111292.4 discloses a kind of modified water resistant low temperature white glue with vinyl; take the method for polymer blending; with the polyethylene aqueous solution be protective colloid, with ethane-acetic acid ethyenyl emulsion be water resistant low temperature properties-correcting agent, with calcium carbonate and kaolin be bonding toughener.Patent 200910204764.1 discloses a kind of water-resistant white latex; adopt polyvinyl alcohol institute formaldehyde to improve water resistance as protective colloid; add butyl acrylate and diacetone-acryloamide(DAA), N hydroxymethyl acrylamide as modified poly body, improve water tolerance and the cohesive strength of polyvinyl acetate emulsion.
Summary of the invention
The present invention is directed in furniture production process because the reasons such as integrated timber water capacity is large, curing speed is slow cause the problems such as production efficiency is low to improve the formulating of recipe of white glue with vinyl, the just formula of sticky environmental protection white glue with vinyl of a kind of moisture-proof height has been proposed, described white glue with vinyl has shaping speed faster aspect the integrated timber processing of higher water capacity, has reduced workpiece process period.
Technical scheme of the present invention: moisture-proof height is sticky environmental protection white glue with vinyl just, according to the mass fraction, composed of the following components: 40-50 part deionized water, 6-10 part polyvinyl alcohol, 30-45 part vinyl acetate between to for plastic, 0.5-1.2 part initiator, 0.05-0.1 part tartrate, 0.01-0.02 part sodium bicarbonate; 5-10 part properties-correcting agent; 0.2-2 part softening agent.
Preferably, described polyvinyl alcohol is polyvinyl alcohol 17-88, polyvinyl alcohol 20-88, one or more in polyvinyl alcohol 17-99 and polyvinyl alcohol 22-99.
Preferably, described polyvinyl alcohol is by 2-2.5 part polyvinyl alcohol 17-88, and 0.5-1 part polyvinyl alcohol 20-88 and 1.5-2.5 part polyvinyl alcohol 17-99 form.
Preferably, described properties-correcting agent is made up of one or more in benzene emulsion, olefin polymerization emulsion and polyvinyl alcohol silicon sol.
Preferably, described properties-correcting agent is made up of 3-6 part benzene emulsion and 2-4 part olefin polymerization emulsion.
Preferably, described initiator is ammonium persulphate or hydrogen peroxide.
Preferably, described deionized water is 40-45 part, and polyvinyl alcohol is 8-10 part, vinyl acetate between to for plastic 30-38 part, initiator 0.5-0.7 part, tartrate 0.05-0.07 part, sodium bicarbonate 0.01-0.02 part; Modified component 6-9 part; Softening agent 0.3-1 part.
Moisture-proof height according to claim 1 is the preparation method of sticky environmental protection white glue with vinyl just, comprises the following steps:
(1) according to formula requirement, take the raw material being up to the standards, for subsequent use;
(2) water is pumped into dissolution kettle, add polyvinyl alcohol, be heated to 90 DEG C of left and right polyvinyl alcohol and dissolve, stir, mix, obtain polyvinyl alcohol solution;
(3) polyvinyl alcohol solution is pumped into reactor, add after sodium bicarbonate and tartrate under the temperature condition of 78～82 DEG C, point adds vinyl acetate between to for plastic and initiator carries out polymerization, obtains work in-process;
(4) work in-process are pumped into adjusting still, under the temperature condition of 50 DEG C, properties-correcting agent is added complete in 30～45 minutes, and add as required soft water, sodium bicarbonate and tartrate, described sodium bicarbonate and tartrate are used for regulating pH value, be stirred to and mix with the speed of 30-40 rev/min, obtain the finished product.
Beneficial effect of the present invention:
(1) the present invention, on the basis of the basic manufacturing process of existing white glue with vinyl, adds the functional group and the additive that change its performance, obtains having compared with high wet strength, very fast curing speed, meets the vinyl acetate between to for plastic base water-based emulsion of the larger integrated timber assembling of humidity;
(2) the present invention is by adding modified component, introduce the larger group of molecular chain, make up defect less compared with macoradical on vinyl acetate between to for plastic molecular chain, molecular chain steric hindrance is increased, increase the difficulty of molecular chain migration, make white glue breast can adapt to the operating mode that humidity is larger, greatly improved the water tolerance of white glue with vinyl;
(3) the present invention is by adding the polyvinyl alcohol of viscosity higher that the tack of white glue with vinyl is increased, better compensate tack because the squeeze time of bringing compared with the reduction of wet cooling condition lengthens, vinyl alcohol also has better consistency for workpiece surface moisture simultaneously, has avoided due to the situation that causes two-layer skin because of moisture; For paper, fabric, other workpiece such as flocking, also have better adaptability;
(4) the present invention does not contain containing formaldehyde and other releasable toxic ingredients, be a kind of real meaning without aldehyde glue, reach real environmental requirement;
(5) reasonably combined by component of the present invention, makes in sizing agent each component can compatible and performance larger performance separately; Production technique is simple simultaneously, and production cost is reasonable, meets service requirements.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1:
Moisture-proof height is sticky environmental protection white glue with vinyl just, according to the mass fraction, composed of the following components: 40 parts of deionized waters, 8 parts of polyvinyl alcohol 17-88,38 parts of vinyl acetate between to for plastics, 0.5 part of ammonium persulphate, 0.07 part of tartrate, 0.01 part of sodium bicarbonate, 3 parts of benzene emulsions, 2 parts of olefin polymerization emulsions, 1 part of softening agent.
Moisture-proof height is the preparation method of sticky environmental protection white glue with vinyl just, comprises the following steps:
(1) according to formula requirement, take the raw material being up to the standards, for subsequent use;
(2) water is pumped into dissolution kettle, add polyvinyl alcohol, be heated to 90 DEG C of left and right polyvinyl alcohol and dissolve, stir, mix, obtain polyvinyl alcohol solution;
(3) polyvinyl alcohol solution is pumped into reactor, add after sodium bicarbonate and tartrate under the temperature condition of 78～82 DEG C, point adds vinyl acetate between to for plastic and initiator carries out polymerization, obtains work in-process;
(4) work in-process are pumped into adjusting still, under the temperature condition of 50 DEG C, properties-correcting agent is added complete in 30～45 minutes, and add as required soft water, sodium bicarbonate and tartrate, described sodium bicarbonate and tartrate are used for regulating pH value, be stirred to and mix with the speed of 30-40 rev/min, obtain the finished product.
Embodiment 2:
Moisture-proof height is sticky environmental protection white glue with vinyl just, according to the mass fraction, composed of the following components: 45 parts of deionized waters, 6 parts of polyvinyl alcohol 20-88,40 parts of vinyl acetate between to for plastics, 0.7 part of hydrogen peroxide, 0.1 part of tartrate, 0.02 part of sodium bicarbonate, 5 parts of benzene emulsions, 4 parts of olefin polymerization emulsions; 0.3 part of softening agent.
Moisture-proof height is the preparation method of sticky environmental protection white glue with vinyl just, comprises the following steps:
(1) according to formula requirement, take the raw material being up to the standards, for subsequent use;
(2) water is pumped into dissolution kettle, add polyvinyl alcohol, be heated to 90 DEG C of left and right polyvinyl alcohol and dissolve, stir, mix, obtain polyvinyl alcohol solution;
(3) polyvinyl alcohol solution is pumped into reactor, add after sodium bicarbonate and tartrate under the temperature condition of 78～82 DEG C, point adds vinyl acetate between to for plastic and initiator carries out polymerization, obtains work in-process;
(4) work in-process are pumped into adjusting still, under the temperature condition of 50 DEG C, properties-correcting agent is added complete in 30～45 minutes, and add as required soft water, sodium bicarbonate and tartrate, described sodium bicarbonate and tartrate are used for regulating pH value, be stirred to and mix with the speed of 30-40 rev/min, obtain the finished product.
Embodiment 3:
Moisture-proof height is sticky environmental protection white glue with vinyl just, according to the mass fraction, composed of the following components: 50 parts of deionized waters, 6 parts of polyvinyl alcohol 26-99,30 parts of vinyl acetate between to for plastics, 1.0 parts of ammonium persulphates, 0.05 part of tartrate, 0.015 part of sodium bicarbonate; 5 parts of polyvinyl alcohol silicon sol; 0.7 part of softening agent.
Moisture-proof height according to claim 1 is the preparation method of sticky environmental protection white glue with vinyl just, comprises the following steps:
(1) according to formula requirement, take the raw material being up to the standards, for subsequent use;
(2) water is pumped into dissolution kettle, add polyvinyl alcohol, be heated to 90 DEG C of left and right polyvinyl alcohol and dissolve, stir, mix, obtain polyvinyl alcohol solution;
(3) polyvinyl alcohol solution is pumped into reactor, add after sodium bicarbonate and tartrate under the temperature condition of 78～82 DEG C, point adds vinyl acetate between to for plastic and initiator carries out polymerization, obtains work in-process;
(4) work in-process are pumped into adjusting still, under the temperature condition of 50 DEG C, properties-correcting agent is added complete in 30～45 minutes, and add as required soft water, sodium bicarbonate and tartrate, described sodium bicarbonate and tartrate are used for regulating pH value, be stirred to and mix with the speed of 30-40 rev/min, obtain the finished product.
Embodiment 4:
Moisture-proof height is sticky environmental protection white glue with vinyl just, according to the mass fraction, composed of the following components: 43 parts of deionized waters, 10 parts of polyvinyl alcohol 22-99,35 parts of vinyl acetate between to for plastics, 1.2 parts of hydrogen peroxide, 0.06 part of tartrate, 0.02 part of sodium bicarbonate; 4 parts of benzene emulsions, 2 parts of olefin polymerization emulsions; 1.5 parts of softening agent.
Moisture-proof height according to claim 1 is the preparation method of sticky environmental protection white glue with vinyl just, comprises the following steps:
(1) according to formula requirement, take the raw material being up to the standards, for subsequent use;
(2) water is pumped into dissolution kettle, add polyvinyl alcohol, be heated to 90 DEG C of left and right polyvinyl alcohol and dissolve, stir, mix, obtain polyvinyl alcohol solution;
(3) polyvinyl alcohol solution is pumped into reactor, add after sodium bicarbonate and tartrate under the temperature condition of 78～82 DEG C, point adds vinyl acetate between to for plastic and initiator carries out polymerization, obtains work in-process;
(4) work in-process are pumped into adjusting still, under the temperature condition of 50 DEG C, properties-correcting agent is added complete in 30～45 minutes, and add as required soft water, sodium bicarbonate and tartrate, described sodium bicarbonate and tartrate are used for regulating pH value, be stirred to and mix with the speed of 30-40 rev/min, obtain the finished product.
Embodiment 5:
Moisture-proof height is sticky environmental protection white glue with vinyl just, according to the mass fraction, composed of the following components: 48 parts of deionized waters, 7 parts of polyvinyl alcohol 17-88,45 parts of vinyl acetate between to for plastics, 0.6 part of ammonium persulphate, 0.08 part of tartrate, 0.01 part of sodium bicarbonate; 8 parts of benzene emulsions; 2 parts of softening agent.
Moisture-proof height according to claim 1 is the preparation method of sticky environmental protection white glue with vinyl just, comprises the following steps:
(1) according to formula requirement, take the raw material being up to the standards, for subsequent use;
(2) water is pumped into dissolution kettle, add polyvinyl alcohol, be heated to 90 DEG C of left and right polyvinyl alcohol and dissolve, stir, mix, obtain polyvinyl alcohol solution;
(3) polyvinyl alcohol solution is pumped into reactor, add after sodium bicarbonate and tartrate under the temperature condition of 78～82 DEG C, point adds vinyl acetate between to for plastic and initiator carries out polymerization, obtains work in-process;
(4) work in-process are pumped into adjusting still, under the temperature condition of 50 degree, properties-correcting agent is added complete in 30～45 minutes, and add as required soft water, sodium bicarbonate and tartrate, described sodium bicarbonate and tartrate are used for regulating pH value, be stirred to and mix with the speed of 30-40 rev/min, obtain the finished product.
Moisture-proof height prepared by embodiment 1-5 just glues the technical indicator contrast of environmental protection white glue with vinyl and common white latex
Remarks: water resistance test method: test specimen health, after 3 days, is immersed in normal-temperature water, soak 4 hours, take out and dry 30 minutes, put into the dry baking of 60 ± 1 DEG C of baking ovens 18 hours, observe test specimen bonding plane cracking rate.
Claims (7)
1. just sticky environmental protection white glue with vinyl of moisture-proof height, is characterized in that: according to the mass fraction, composed of the following components: 40-50 part deionized water, 6-10 part polyvinyl alcohol, 30-45 part vinyl acetate between to for plastic, 0.5-1.2 part initiator, 0.05-0.1 part tartrate, 0.01-0.02 part sodium bicarbonate; 5-10 part properties-correcting agent; 0.2-2 part softening agent.
2. just sticky environmental protection white glue with vinyl of moisture-proof height according to claim 1, is characterized in that: described polyvinyl alcohol is by polyvinyl alcohol 17-88, polyvinyl alcohol 20-88, one or more compositions in polyvinyl alcohol 17-99 and polyvinyl alcohol 22-99.
3. just sticky environmental protection white glue with vinyl of moisture-proof height according to claim 1, is characterized in that: described properties-correcting agent is made up of one or more in benzene emulsion, olefin polymerization emulsion and polyvinyl alcohol silicon sol.
4. just sticky environmental protection white glue with vinyl of moisture-proof height according to claim 1, is characterized in that: described properties-correcting agent is made up of 3-6 part benzene emulsion and 2-4 part olefin polymerization emulsion.
5. just sticky environmental protection white glue with vinyl of moisture-proof height according to claim 1, is characterized in that: described initiator is ammonium persulphate or hydrogen peroxide.
6. according to just sticky environmental protection white glue with vinyl of the moisture-proof height described in claim 1-5 any one, it is characterized in that: described deionized water is 40-45 part, polyvinyl alcohol is 8-10 part, vinyl acetate between to for plastic 30-38 part, initiator 0.5-0.7 part, tartrate 0.05-0.07 part, sodium bicarbonate 0.01-0.02 part; Modified component 6-9 part; Softening agent 0.3-1 part.
7. the just preparation method of sticky environmental protection white glue with vinyl of moisture-proof height according to claim 1, is characterized in that: comprise the following steps: (1), according to formula requirement, takes the raw material being up to the standards, for subsequent use;
(2) water is pumped into dissolution kettle, add polyvinyl alcohol, be heated to 90 DEG C of left and right polyvinyl alcohol and dissolve, stir, mix, obtain polyvinyl alcohol solution;
(3) polyvinyl alcohol solution is pumped into reactor, add after sodium bicarbonate and tartrate under 78-82 DEG C of condition, point adds vinyl acetate between to for plastic and initiator carries out polymerization, obtains work in-process;
(4) work in-process are pumped into adjusting still, under the temperature condition of 50 DEG C, properties-correcting agent is added completely in 30-45 minute, and add as required soft water, be stirred to and mix with the speed of 30-40 rev/min, obtain the finished product.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418495A (en) * | 2017-07-28 | 2017-12-01 | 安徽安大华泰新材料有限公司 | A kind of high waterproof adhesive for timber processing and preparation method thereof |
| WO2018196033A1 (en) * | 2017-04-27 | 2018-11-01 | 龚彩萍 | White latex adhesive and preparation method therefor |
| CN110437775A (en) * | 2019-08-08 | 2019-11-12 | 东莞市顺威粘合剂有限公司 | Surfactant-free white glue with vinyl |
| 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 |
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| CN1377929A (en) * | 2002-04-09 | 2002-11-06 | 上海工程技术大学 | Modified water resistant low temperature white emulsoid |
| CN101130586A (en) * | 2007-09-18 | 2008-02-27 | 林玉珠 | Novel copolymerized white latex |
| CN102372885A (en) * | 2010-08-24 | 2012-03-14 | 中国石油化工集团公司 | High viscosity polyvinyl acetate emulsion and preparation method thereof |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1377929A (en) * | 2002-04-09 | 2002-11-06 | 上海工程技术大学 | Modified water resistant low temperature white emulsoid |
| CN101130586A (en) * | 2007-09-18 | 2008-02-27 | 林玉珠 | Novel copolymerized white latex |
| CN102372885A (en) * | 2010-08-24 | 2012-03-14 | 中国石油化工集团公司 | High viscosity polyvinyl acetate emulsion and preparation method thereof |
Non-Patent Citations (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196033A1 (en) * | 2017-04-27 | 2018-11-01 | 龚彩萍 | White latex adhesive and preparation method therefor |
| CN107418495A (en) * | 2017-07-28 | 2017-12-01 | 安徽安大华泰新材料有限公司 | A kind of high waterproof adhesive for timber processing and preparation method thereof |
| CN110437775A (en) * | 2019-08-08 | 2019-11-12 | 东莞市顺威粘合剂有限公司 | Surfactant-free white glue with vinyl |
| 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 |
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| CN103865441B (en) | 2016-01-20 |
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