CN1281702C - Preparing process and application of wet-solidifying single-component polyurethane adhesive - Google Patents
Preparing process and application of wet-solidifying single-component polyurethane adhesive Download PDFInfo
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- CN1281702C CN1281702C CN 02113139 CN02113139A CN1281702C CN 1281702 C CN1281702 C CN 1281702C CN 02113139 CN02113139 CN 02113139 CN 02113139 A CN02113139 A CN 02113139A CN 1281702 C CN1281702 C CN 1281702C
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- polyether
- diphenylmethanediisocyanate
- polyether glycols
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Abstract
The present invention relates to a preparation process and the application of single-component wet solidification polyurethane adhesive. Polyether glycol, or polyether diatomic alcohol and polyether tribasic alcohol react with the diisocyanate of 4, 4'-diphenylmethane, and are prepared into the adhesive. The reaction is easy to control, and is difficult to gelatinize in the preparation process. The storage stability of the adhesive is greater than or equal to one year at (25 DEG C). The adhesive can be used for bonding various rubber particles to make a plastic track, an elastic rubber pad and an elastic slippery road surface, and can also be mixed with pigments and stuffing to make construction seal gum. The adhesive has the advantages of strong cohesive force, innocuity, no pollution and convenient use.
Description
Technical field
The present invention relates to a kind of wet-solidifying single-component polyurethane adhesive preparation method.
Background technology
At present, adopt 2,4 toluene diisocyanate (hereinafter to be referred as TDI) and polyether glycol reaction to make wet-solidifying single-component polyurethane adhesive usually.The isocyanate end that this tackiness agent contains (hereinafter to be referred as the NCO end group) forms the urea key with airborne moisture reaction and reaches settable cementitious purpose.The reason that this preparation method is widely used is: the price of TDI and polyether glycol is lower, and the reactive behavior of two isocyanate group (hereinafter to be referred as the NCO yl) of TDI is subjected to intramolecularly methyl sterically hindered influence, and is active variant.Therefore, easy control of reaction system in the preparation process.But, the vapour pressure of TDI higher (20 ℃ is 0.042mmHg), volatile, in preparation process, adopt excessive TDI again usually, therefore, the free TDI that contains in the product is more, and no matter still all influential to environment to human body surpass environmental regulations value (≤0.7%).4,4 '-diphenylmethanediisocyanate (hereinafter to be referred as MDI), (25 ℃ is～10 to its vapour pressure
-5MmHg), and all be better than the tackiness agent made with TDI with the performance (as cohesive strength, elongation etc.) of tackiness agent of its preparation far below TDI.But because two reactive behavioies that are equal to the NCO base in the MDI molecule equate that when reacting with polyether glycol, its activity is too big, reaction is difficult to control easy generation gel, even made tackiness agent, its package stability is also very poor.Therefore, be that the preparation method of raw material is difficult to industrialization with MDI, also influenced the application of this type of tackiness agent.
Summary of the invention
The objective of the invention is: a kind of wet-solidifying single-component polyurethane adhesive preparation method is provided, and this preparation method can low toxicity, highly active MDI is that gel does not take place for raw material and reaction process, the tackiness agent excellent storage stability that makes.Applied range is nontoxic, pollution-free, easy to use.
Realize the technical scheme of the object of the invention: a kind of wet-solidifying single-component polyurethane adhesive preparation method, it is with vulcabond and polyether glycol prepared in reaction, used polyether glycol is that hydroxyl value is polyether Glycols N-210 and/or the N-220 of 56～300mgKOH/g, or hydroxyl value is that the polyether Glycols N-210 of 56～300mgKOH/g and/or N-220 and hydroxyl value are the polyether-tribasic alcohol N-330 of 56～500mgKOH/g, used vulcabond is 4,4 '-diphenylmethanediisocyanate; Each raw material consumption is as follows by weight percentage: above-mentioned polyether Glycols 27.6～58.0%, and above-mentioned polyether-tribasic alcohol 0～13.0%, 4,4 '-diphenylmethanediisocyanate 31.4～55.0%, solvent 0～20%; Concrete preparation process is as follows: polyether Glycols or polyether Glycols and polyether-tribasic alcohol thermal dehydration are to water content≤0.05%, cool to≤50 ℃, stir down and add 4,4 '-diphenylmethanediisocyanate, add and be warming up to 50～85 ℃ and insulation reaction again,, be cooled to≤60 ℃ until measuring in the scope of isocyanate group content 5～10.5%, discharging and airtight package, the package stability that the gained tackiness agent is 25 ℃ 〉=1 year.
In the preparation process of above-mentioned tackiness agent, the dewatering of polyether glycol adopts vacuum hydro-extraction, vacuum tightness 0.4～0.6MPa, and temperature is 80～120 ℃; Be the solvent refluxing dehydration perhaps with benzene, toluene or dimethylbenzene.
In the preparation process of above-mentioned tackiness agent, used 4,4 '-diphenylmethanediisocyanate be modification liquid 4,4 '-diphenylmethanediisocyanate, or pure solid 4,4 '-diphenylmethanediisocyanate.
In the preparation process of above-mentioned tackiness agent, used polyether Glycols can be a kind of polyether Glycols, or more than one different polyether Glycols.
In the preparation process of above-mentioned tackiness agent, solvent for use is dioctyl phthalate (DOP), dibutyl phthalate, whiteruss, N-BUTYL ACETATE or dimethylbenzene.
The tackiness agent that adopts technique scheme to make can be applicable to:
A, described tackiness agent mix with rubber grain ratio 1: 6～7 by weight, make nontoxic, free of contamination plastic cement race track, elasticity road surface and elastic rubber fitting, and at 25 ℃, under the condition of relative humidity 70～80%, 4～6 hours curable, can use after 15 days;
B, described tackiness agent mix with pigment, filler, make nontoxic, free of contamination building sealant, bonding or sealing timber, metal or non-metallic material, and water-repellancy, adhesive fastness are better than the product of the same type that makes with TDI.
In the application of above-mentioned tackiness agent, described rubber grain is the strip or the filamentous particle of waste old ground grains, the fragmentation of waste vapour vehicle tyre, or the synthetic rubber particle.
Technique effect of the present invention: adopt the polyether Glycols of technical solution of the present invention middle finger set pattern lattice or polyether Glycols and polyether-tribasic alcohol as polyether glycol and by the proportioning of the polyether Glycols that provides in the technical scheme, polyether-tribasic alcohol, MDI and solvent, in preparation, adopt the concrete preparation process of stipulating in the technical scheme, can implement control to two reactive behavioies that are equal to NCO base and polyether glycol in the MDI molecule, make the tackiness agent excellent storage stability that in the preparation process gel does not take place and make.In addition, can make the wet-solidifying single-component polyurethane adhesive that generates by MDI and polyether glycol reaction owing to adopt technical solution of the present invention, it is compared by the TDI wet-solidifying single-component polyurethane adhesive that reaction generates with polyether glycol with existing, toxicity is little, the performance of environmentally safe and tackiness agent is good, for example every 1kg tackiness agent 6～7kg rubber grain that can bond, and cohesive force is strong, only need mix during construction and get final product, very convenient.Therefore, but the tackiness agent widespread use of adopting preparation method of the present invention to obtain.
Embodiment
Below in conjunction with embodiment the present invention is further described in detail, but is not limited to this.
(1) preparation of wet-solidifying single-component polyurethane adhesive
1, prescription
| Material name and specification | Charging capacity % (weight percent) | |||
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Polyether Glycols N-220, hydroxyl value 56mgKOH/g N-210, hydroxyl value 100mgKOH/g | 28.16 18.88 | 45.5 12.5 | - 45 | 22.6 25.2 |
| Polyether-tribasic alcohol N-330, hydroxyl value 56mgKOH/g | - | - | - | 2.6 |
| The pure MDI of MDI, industrial goods, solid, 38～39 ℃ of fusing points, modification MDI, industrial goods, liquid, NCO% 25～31 | 32.96 - | 42.0 - | - 55 | - 49.6 |
| The solvent dioctyl phthalate (DOP) | 20.00 | - | - | - |
Annotate: modification MDI is the MDI of carbodiimide modification in the table
2, preparation process
Example 1
In the reactor of existing band vacuum dewatering plant, ratio in the prescription regulation drops into N-220 and N-210, be heated to 95 ℃, in vacuum tightness is that to carry out vacuum hydro-extraction to water content under the 0.6MPa be 0.05%, is cooled to 45 ℃, adds the solvent dioctyl phthalate (DOP) and the pure MDI pressed powder of formula ratio while stirring, add and be warming up to 80 ℃ and insulation reaction again, until measuring NCO content with ordinary method is 7 ± 2%, can be cooled to 60 ℃, discharging and airtight package.
Example 2
In having the reactor of reflux, ratio in the prescription regulation drops into N-220 and N-210, add an amount of reflux solvent dimethylbenzene, reflux dewatering is to water content 0.05%, be cooled to 45 ℃, add the pure MDI pressed powder of prescription regulation ratio while stirring, add and be warming up to 85 ℃ and insulation reaction again, measure NCO content 7 ± 2% with ordinary method, can be cooled to 55 ℃ of dischargings and pack.
Example 3 and 4
Except that changing prescription, all the other are all with example 1.
In the preparation process of example 1～4, the gel phenomenon does not all take place.
3, product performance
The product appearance that example 1～4 makes is the extremely muddy shape thick liquid of little Huang of water white transparency, is coated with-4 glasss of viscosity more than 50 seconds, 25 ℃ of package stabilities, and performance is not seen change after 1 year.
(2) application of wet-solidifying single-component polyurethane adhesive
1, mixes with rubber grain
1. get in example 1～4 gained tackiness agent any 100 kilograms, with 600 kilograms of old rubber grains (after particle diameter 1～4mm) mixes, by hand or mechanical means, the 9～11mm that paves on asphalt concrete surface or cement flooring is thick, makes the stadium plastic cement race track.Normal temperature (25 ℃), relative humidity 70～80% referred to touch dried in 30 minutes, did solid work in 4～6 hours, did not need catalyzer, can use after 15 days.Working life is more than 4 hours.The tensile strength of measuring the plastic cement race track glue-line of making of example 1～4 gained tackiness agent is 0.6～0.8MPa, elongation 50～70%, shore hardness 45～65 degree meet International Track and Field Association's specified standards (tensile strength 〉=0.6MPa, shore hardness 45～60 degree) fully.
2. get any 100 kilograms in example 1～4 gained tackiness agent; mix with 650 kilograms of strip particles that are broken into the waste vapour vehicle tyre; be placed on normal temperature press forming in the shaping mould, make elastic rubber fitting for usefulness such as kindergarten, playground, golf course passages.Its dryness is identical with the making plastic cement race track.Measure rebound degree 〉=95% of the elastic rubber fitting that makes with example 1～4 gained tackiness agent.
3. get any 100 kilograms in example 1～4 gained tackiness agent; mix with 700 kilograms of synthetic colour polyurethane rubber grains; pave on the walkway (metallic surface or cement flooring) of city overpass by above-mentioned 1. middle same procedure; make the elastic anti-slip road surface, its dryness and every performance all can reach above-mentioned every standard in 1..
2, mix with pigment, filler
Any in example 1～4 gained tackiness agent replaces the used similar tackiness agent of being made by TDI in the existing seal gum, the preparation building sealant, and binder dosage is few, water resistance good and nontoxic, pollution-free.
Raw material selected among the preparation method of the present invention is easy to get, and reaction process is easy to control, and is very easy during application, need not to use catalyzer, and dryness is good, and excellent storage stability is all harmless to human body and environment, has a extensive future.
Claims (5)
1, a kind of wet-solidifying single-component polyurethane adhesive preparation method, it is with vulcabond and polyether glycol prepared in reaction, it is characterized in that: used polyether glycol is that hydroxyl value is polyether Glycols N-210 and/or the N-220 of 56～300mgKOH/g, or hydroxyl value is that the polyether Glycols N-210 of 56～300mgKOH/g and/or N-220 and hydroxyl value are the polyether-tribasic alcohol N-330 of 56～500mgKOH/g, used vulcabond is 4,4 '-diphenylmethanediisocyanate; Each raw material consumption is as follows by weight percentage: above-mentioned polyether Glycols 27.6～58.0%, and above-mentioned polyether-tribasic alcohol 0～13.0%, 4,4 '-diphenylmethanediisocyanate 31.4～55.0%, solvent 0～20%; Concrete preparation process is as follows: polyether Glycols or polyether Glycols and polyether-tribasic alcohol thermal dehydration are to water content≤0.05%, cool to≤50 ℃, stir down and add 4,4 '-diphenylmethanediisocyanate, add and be warming up to 50～85 ℃ and insulation reaction again,, be cooled to≤60 ℃ until measuring in the scope of isocyanate group content 5～10.5%, discharging and airtight package, the package stability that the gained tackiness agent is 25 ℃ 〉=1 year.
2, adhesive preparation method according to claim 1 is characterized in that: the dewatering of polyether glycol adopts vacuum hydro-extraction, vacuum tightness 0.4～0.6MPa, and temperature is 80～120 ℃; Be the solvent refluxing dehydration perhaps with benzene, toluene or dimethylbenzene.
3, adhesive preparation method according to claim 1, it is characterized in that: used 4,4 '-diphenylmethanediisocyanate be modification liquid 4,4 '-diphenylmethanediisocyanate, or pure solid 4,4 '-diphenylmethanediisocyanate.
4, adhesive preparation method according to claim 1 is characterized in that: used polyether Glycols is a kind of polyether Glycols, or more than one different polyether Glycols.
5, adhesive preparation method according to claim 1 is characterized in that: solvent for use is dioctyl phthalate (DOP), dibutyl phthalate, whiteruss, N-BUTYL ACETATE or dimethylbenzene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113139 CN1281702C (en) | 2002-06-07 | 2002-06-07 | Preparing process and application of wet-solidifying single-component polyurethane adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113139 CN1281702C (en) | 2002-06-07 | 2002-06-07 | Preparing process and application of wet-solidifying single-component polyurethane adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1386815A CN1386815A (en) | 2002-12-25 |
| CN1281702C true CN1281702C (en) | 2006-10-25 |
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| CN 02113139 Expired - Fee Related CN1281702C (en) | 2002-06-07 | 2002-06-07 | Preparing process and application of wet-solidifying single-component polyurethane adhesive |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1595902A1 (en) * | 2004-05-10 | 2005-11-16 | Sika Technology AG | Polyurethane composition having high early strength |
| CN1296452C (en) * | 2004-05-11 | 2007-01-24 | 北京市建筑材料科学研究院 | Method for preparing polyurethane adhesive in use for rubber tiles |
| CN1295288C (en) * | 2004-06-10 | 2007-01-17 | 北京宝利通纳米橡塑材料有限公司 | Sports ground paving material prepared with nanometer montmorillonite and polyurethane plastic and its prepn process |
| US20070088103A1 (en) * | 2005-10-14 | 2007-04-19 | Dow Global Technologies Inc. | Composite article and method of manufacture using an isocyanate-terminated prepolymer as binder |
| CN101130680B (en) * | 2007-09-29 | 2011-03-23 | 山东东大一诺威聚氨酯有限公司 | Environment protection type single-component polyurethane binder, production and use method of the same |
| CN101824298B (en) * | 2010-04-13 | 2013-01-09 | 苏州膜华材料科技有限公司 | Potting material for hollow fiber membrane modules |
| CN101845785A (en) * | 2010-04-19 | 2010-09-29 | 中国矿业大学(北京) | Novel environment-friendly water-based plastic track |
| CN101885957A (en) * | 2010-07-09 | 2010-11-17 | 山东北方现代化学工业有限公司 | Room-temperature moisture cured one-component water-expansion polyurethane sealant |
| CN102898969A (en) * | 2012-10-22 | 2013-01-30 | 东莞隽思印刷有限公司 | Water-washable non-setting adhesive and preparation method thereof |
| CN103965765B (en) * | 2013-02-01 | 2016-12-28 | 烟台东聚防水保温工程有限公司 | A kind of single-component moisture curing polyurethane water-repellent paint and preparation method thereof |
| CN104046314A (en) * | 2013-03-12 | 2014-09-17 | 杭州宝力物资再生利用有限公司 | Diphenyl-methane-diisocyanate (MDI)-type mono-component moisture-curable polyurethane adhesive and manufacturing method thereof |
| CN104044306A (en) * | 2013-03-14 | 2014-09-17 | 上海昊海化工有限公司 | Surface bonding strength enhanced phenolic foam composite thermal insulation plate prepared by continuous method |
| CN105419717B (en) * | 2015-12-31 | 2018-04-10 | 山东一诺威聚氨酯股份有限公司 | Polyurethane binder for sticking rubber particle and preparation method thereof |
| CN105670482A (en) * | 2016-04-21 | 2016-06-15 | 苏州群力防滑材料有限公司 | Anti-skid composition coating deck |
| CN106497493A (en) * | 2016-09-29 | 2017-03-15 | 上海回天新材料有限公司 | One-component solvent-free type polyurethane adhesive and its preparation method and application |
| CN106832731B (en) * | 2017-01-05 | 2019-12-10 | 上海力茵地面弹性材料有限公司 | elastic floor, rubber particle mixture thereof, construction method thereof and method for manufacturing round thermoplastic polyolefin particles |
| CN109705796A (en) * | 2019-01-09 | 2019-05-03 | 匠欣环保家居用品科技(浙江)有限公司 | A kind of high fastness discards sponge adhesive and preparation method |
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2002
- 2002-06-07 CN CN 02113139 patent/CN1281702C/en not_active Expired - Fee Related
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| CN1386815A (en) | 2002-12-25 |
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