CN104194320A - Polyurethane grouting material and preparation method thereof - Google Patents
Polyurethane grouting material and preparation method thereof Download PDFInfo
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- CN104194320A CN104194320A CN201410461032.1A CN201410461032A CN104194320A CN 104194320 A CN104194320 A CN 104194320A CN 201410461032 A CN201410461032 A CN 201410461032A CN 104194320 A CN104194320 A CN 104194320A
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- grouting material
- polyurethane grouting
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Abstract
The invention discloses a polyurethane grouting material which is a high-strength single-component waterborne polyurethane resin material. The polyurethane grouting material is prepared from the following components: a prepolymer, a plasticizer, a catalyst and a solvent, wherein the prepolymer is formed by polyether polyol and polyisocyanate under the effect of a chain extender. The polyurethane grouting material disclosed by the invention has the characteristics of good hydrophilicity, low viscosity, high strength, high reaction speed, convenient construction and the like.
Description
Technical field
The present invention relates to polyurethane grouting material, belong to building material field.
Background technology
Polyurethane material be in current chemical grouting material product category at most, the scope of application the widest, the maximum class injection material of consumption, polyurethane grouting material can be divided into two kinds according to characteristic: hydrophobic type (oil soluble) and hydrophilic (water-soluble).Hydrophobic type polyurethane grouting material does not have wetting ability, meets water post-foaming, produces secondary pressure, can be filled in micro-cracks, and the foams of formation have certain intensity, are applicable to the waterproofing and leakage-stopping occasion with reinforcement and strengthening; Hydrophilic polyurethane grouting material is mainly with polyisocyanates and the polymerization of high molecular polyfunctionality hydrophilic polyether glycol, and in order to guarantee low viscosity, isocyanic ester multiselect low viscosity isocyanic ester, then adds hydrophilic solvent formulated; Hydrophilic polyurethane grouting material viscosity is low, can self-emulsifying to several times even in tens times of water, and together with water rapid gel, form soft elastic polyurethane gle body, reach the order with water sealing, because of its bag water yield large, good penetrability, induration good springiness, is suitable for the water burst leak stopping on moving water stratum, the knot of soil property shallow-layer and upper layer is consolidated and protection, and the impervious leakage-stopping of deformed concrete crack etc.Another kind of sorting technique is to divide by component, is divided into single-component and two component.Monocomponent polyurethane injection material has advantage easy to use, but in order to guarantee lower viscosity, conventionally using two functionality or the relatively high polyether glycol of molecular weight is raw material, this has determined that monocomponent polyurethane injection material major part is soft resilient material, and two-component polyurethane grouting material can provide the material that intensity is very high, but before using, need preparation, not too convenient.
The single-component aqurous ployurethane injection material using at present all adopts high molecular Hydrophilicrto polyether polyvalent alcohol and polyisocyanic acid polyisocyanate polyaddition, because it adopts polyether glycol molecular weight very high, after solidifying, induration elasticity is fine, can adapt to the deformation of buildings, but corresponding intensity is lower, generally below 3MPa, can not bear higher pressure, and dehydration post shrinkage, causes leaking again, has limited its application.
If can invent a kind of monocomponent polyurethane injection material, existing very strong wetting ability, can self-emulsifying forms gelinite together to meeting water in water, and induration has again higher intensity, can play the effect of certain reinforcement and strengthening, will be used widely.
Summary of the invention
Defect for prior art, the invention discloses a kind of monocomponent polyurethane injection material, by raw material and composition, improve, and be aided with the preparation method of optimization, thereby low viscosity, high strength monocomponent polyurethane water-based injection material are provided, after solidifying, have not shunk.
For achieving the above object, the present invention is achieved through the following technical solutions:
A polyurethane grouting material, is a kind of single-component hydrophilic polyurethane performed polymer material, it is characterized in that comprising following component: prepolymer, is formed by polyether glycol, chainextender and polyisocyanates reaction; Softening agent; Solvent; Catalyzer.
In the present invention, the consumption of each composition can carry out suitable adjusting as required, in order to prevent the problems such as raw material reaction is incomplete, reaction efficiency is low, preferably, wherein the consumption of each composition is, in mass fraction: the chainextender of 20～50 polyether glycols, 20～50 vulcabond, 0-10,10～20 softening agent, 10-20 solvent, 1～5 catalyzer.
In above-mentioned statement, as long as the implication of having used the phraseology of 0-10 to represent is to add chainextender to make reaction normally, without specific consumption requirement.
In mentioned component, thereby being polyether glycol, polyisocyanates, prepolymer under chainextender effect, make molecular chain expansion, molecular weight increase formation, in the present invention, described chainextender is preferably small molecule alcohol chainextender, include but not limited to as ethylene glycol, 1, in ammediol, BDO, hexylene glycol, one or more mixture of TriMethylolPropane(TMP) etc.
In order to make product there is otherwise performance, such as being convenient to preserve, not perishable, permanent stability are better etc., polyurethane grouting material of the present invention also includes auxiliary agent, and described auxiliary agent includes but not limited to a kind of in oxidation inhibitor, tensio-active agent, stablizer etc. and/or more than one mixture.It is known that this described analog assistant is generally those skilled in the art institute, and the present invention does not repeat; Described auxiliary dosage, in mass fraction, not higher than 10.
Technique scheme is by the design to base polyurethane prepolymer for use as structure, the selection of chainextender, softening agent and adjust proportioning, and the single-component injection material viscosity of composition is low, uses efficient and conveniently, and wetting ability is strong, has good elasticity.
Accordingly, the invention provides the preparation method of above-mentioned injection material, comprise the steps:
Get each raw material of required quality, in interlayer reactor, first by proportioning, add successively polyether glycol and softening agent, in temperature, it is 110～120 ℃, under the condition that vacuum tightness is-0.1MPa, dewater 2～3 hours, be cooled to 60 ℃, add chainextender and isocyanic ester, continue to be warming up to 70～85 ℃, react 2～3 hours, be cooled to below 30 ℃, add as required auxiliary agent, discharging after stirring, filters inflated with nitrogen and packs.
It will be appreciated by those skilled in the art that, in above-mentioned preparation technology, applicant has used " adding as required auxiliary agent ", and implication to be expressed is that auxiliary agent is to add, also can not add, specifically adding which kind of auxiliary agent is also applicant's choose reasonable as required.
Simultaneously, in above-mentioned preparation technology, applicant is illustrated time, the temperature of reaction, and this processing condition are preferred, and unrestricted product of the present invention only can adopt this method preparation, it is that those skilled in the art can expect that temperature of reaction, reaction times etc. is adjusted.
Of the present invention be described in further detail and concrete enforcement in; the invention discloses the preferred type of various compositions used; so that better, clearer description the present invention; yet this detailed description does not form special restriction of the present invention; do not rely on these detailed information and adopt other general chemical materials of the technology of the present invention field; as long as it meets the above-mentioned restriction that each moiety title is done of the present invention, still belong to protection scope of the present invention.
Wherein, described hydrophilic polyether glycol is the polyether glycol that propylene oxide and ethylene oxide blending polymerization form, and wherein oxidic polyethylene content is greater than 50%.
Wherein, described polyether glycol molecular weight is at the polyether glycol below 1000, as one or more the mixture in DL400, MN500, MN700, Viscotrol C.
Wherein, described polyisocyanates is one or more the mixture in tolylene diisocyanate, diphenylmethanediisocyanate, MDI-50.
Wherein, described softening agent is for increasing the Degree of Liquefaction of mixture, reduce dry required time, include but not limited to one or more the mixture in dioctyl phthalate (DOP), Dinonylphthalate, diisononyl phthalate, Di Iso Decyl Phthalate.
Wherein, described catalyzer is used for promoting isocyanate group and hydroxyl reaction, play booster action, the present invention's catalyzer used is amine and/or organo-metallic salt catalyzer, include but not limited to triethylenediamine, N, N-dimethylcyclohexylamine, N, N-dimethyl benzylamine, N, one or more mixtures such as N-thebaine, dibutyl tin laurate, isocaprylic acid lead, Potassium ethanoate.
Wherein, solvent is small molecules organic solvent, comprise in acetone, butanone, toluene, dimethylbenzene, ethyl acetate etc. one or more mixture.
Embodiment
Following examples further illustrate application of the present invention and specific implementation, but protection scope of the present invention are not produced to any specific limited.Those skilled in the art all belong to protection scope of the present invention understanding the change carried out on the basis of connotation of the present invention, replacement etc., and protection domain of the present invention is covered by its claim and equivalents thereof.
In following examples, each composition all represents with mass fraction; Wherein protective agent used is for improving the long-term photostabilization of placing of product, and industrial any this available analog assistant of plastic cement all can be applied.
Embodiment 1
The preparation method of monocomponent polyurethane injection material is as follows:
In interlayer reactor, by formula ratio, first adding polyether glycol, Dinonylphthalate, is 110～120 ℃ in temperature, under the condition that vacuum tightness is-0.1MPa, dewaters 2～3 hours, be cooled to 60 ℃, after stirring, add TDI, be slowly warming up to 85 ℃, react two hours, be cooled to below 30 ℃, add solvent, discharging after stirring, nitrogen-filled seal packing.During use, unpack and directly use.
Embodiment 2
The preparation method of monocomponent polyurethane injection material is as follows:
In interlayer reactor, by formula ratio, first add polyether glycol, dioctyl phthalate (DOP), in temperature, be 110～120 ℃, under the condition that vacuum tightness is-0.1MPa, dewater 2～3 hours, be cooled to 60 ℃, add MDI-50 and TMP, free responding half an hour, slowly be warming up to 80 ℃, react two hours, be cooled to below 30 ℃, add solvent and auxiliary agent, discharging after stirring, nitrogen-filled seal packing.During use, unpack and directly use.
Embodiment 3
The preparation method of monocomponent polyurethane injection material is as follows:
In interlayer reactor, by formula ratio, first add polyether glycol, Di Iso Decyl Phthalate, in temperature, be 110～120 ℃, under the condition that vacuum tightness is-0.1MPa, dewater 2～3 hours, be cooled to 60 ℃, add TDI, free responding half an hour, slowly be warming up to 85 ℃, react two hours, be cooled to below 30 ℃, add solvent and auxiliary agent, discharging after stirring, nitrogen-filled seal packing.During use, unpack and directly use.
The monocomponent polyurethane injection material that applicant obtains above embodiment detects, and the key technical indexes is as follows:
Table 1 embodiment the key technical indexes
By above-mentioned data, can be seen, monocomponent polyurethane injection material of the present invention is by the design to base polyurethane prepolymer for use as structure, obtain a kind of without any solvent, Environmental Safety, easy to use, the injection material of good springiness.
The above, be only preferred embodiments of the present invention, not the present invention done to any pro forma restriction.Every foundation technical spirit of the present invention is made any simple modification to above embodiment, and equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a polyurethane grouting material, is characterized in that, for single-component hydrophilic polyurethane performed polymer material, comprising following component: prepolymer, is formed by polyether glycol, chainextender and polyisocyanates reaction; Softening agent, catalyzer, solvent, wherein the consumption of each composition is, in mass fraction: the chainextender of 20～50 polyether glycols, 20～50 vulcabond, 0-10,10～20 softening agent, 10-20 solvent, 1～5 catalyzer.
2. according to right 1, require described polyurethane grouting material, it is characterized in that described prepolymer is that Hydrophilicrto polyether polyvalent alcohol, polyether glycol, small molecule chain extender react with polyisocyanates, gained end group is the macromolecule prepolymer of NCO group.
3. according to right 2, require described polyurethane grouting material, it is characterized in that Hydrophilicrto polyether polyvalent alcohol is the polyether glycol that propylene oxide and ethylene oxide blending polymerization form, wherein oxidic polyethylene content is greater than 50%.
4. according to right 2, require described polyurethane grouting material, it is characterized in that polyether glycol be molecular weight at the polyether glycol below 1000, comprise one or more the mixture in DL400, MN500, MN700, Viscotrol C.
5. according to right 2, require described polyurethane grouting material, it is characterized in that small molecule chain extender is small molecule alcohol, comprise one or more the mixture in propylene glycol, butyleneglycol, glycerol, TMP.
6. according to right 2, require described polyurethane grouting material, it is characterized in that polyisocyanates is one or more the mixture in tolylene diisocyanate, diphenylmethanediisocyanate, MDI-50.
7. according to right 1, require described polyurethane grouting material, it is characterized in that softening agent is one or more the mixture in dioctyl phthalate (DOP), Dinonylphthalate, diisononyl phthalate, Di Iso Decyl Phthalate.
8. according to right 1, require described polyurethane grouting material, it is characterized in that catalyzer is amine and/or organo-metallic salt catalyzer.
9. according to right 1, require described polyurethane grouting material, it is characterized in that solvent is small molecules organic solvent, comprise in acetone, butanone, toluene, dimethylbenzene, ethyl acetate one or more mixture.
10. the preparation method of polyurethane grouting material described in above-mentioned arbitrary claim, it is characterized in that comprising the steps: to get each raw material of required quality, in interlayer reactor, by proportioning, add successively polyether glycol and softening agent, in temperature, it is 110～120 ℃, under the condition that vacuum tightness is-0.1MPa, dewater 2～3 hours, be cooled to 60 ℃, add chainextender and isocyanic ester, continue to be warming up to 70～80 ℃, react 1～2 hour, be cooled to below 50 ℃, add solvent, add as required auxiliary agent, discharging after stirring, filters inflated with nitrogen and packs.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106608961A (en) * | 2016-12-07 | 2017-05-03 | 江苏卓美聚氨酯科技有限公司 | Polyurethane compound suitable for grouting and preparation method thereof |
| CN108395514A (en) * | 2018-03-03 | 2018-08-14 | 厦门力嘉诚防水工程有限公司 | A kind of graphene polyurethane injection slurry |
| CN108587117A (en) * | 2018-05-25 | 2018-09-28 | 孙培吉 | A kind of hydraulic engineering grouting flame retardant polyurethane compositions and preparation method thereof |
| CN108892765A (en) * | 2018-06-08 | 2018-11-27 | 重庆科顺化工新材料有限公司 | A kind of non-solvent single-component polyurethane grouting material and preparation method thereof |
| CN109468109A (en) * | 2018-10-16 | 2019-03-15 | 珠海格力电器股份有限公司 | Dual-component polyurethane adhesive, process for filling colloid and its application in high defense controls devices field |
| CN109734362A (en) * | 2019-01-23 | 2019-05-10 | 四川共拓岩土科技股份有限公司 | A kind of inorganic matter composite polyurethane grouting material and preparation method thereof |
| CN109957085A (en) * | 2019-04-10 | 2019-07-02 | 山东科技大学 | A kind of thin coal pillar wind leaking stoppage flexible material |
| CN110643017A (en) * | 2019-09-29 | 2020-01-03 | 湖南师范大学 | Hydrophilic environment-friendly polyurethane grouting material and preparation method and application thereof |
| CN111564800A (en) * | 2020-05-26 | 2020-08-21 | 中电保力（北京）科技有限公司 | Waterproof method for cable pipeline to pass through wall |
| CN112388794A (en) * | 2019-08-19 | 2021-02-23 | 万华化学集团股份有限公司 | Aldehyde-free light-weight shaving board and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106608961A (en) * | 2016-12-07 | 2017-05-03 | 江苏卓美聚氨酯科技有限公司 | Polyurethane compound suitable for grouting and preparation method thereof |
| CN108395514A (en) * | 2018-03-03 | 2018-08-14 | 厦门力嘉诚防水工程有限公司 | A kind of graphene polyurethane injection slurry |
| CN108587117A (en) * | 2018-05-25 | 2018-09-28 | 孙培吉 | A kind of hydraulic engineering grouting flame retardant polyurethane compositions and preparation method thereof |
| CN108892765A (en) * | 2018-06-08 | 2018-11-27 | 重庆科顺化工新材料有限公司 | A kind of non-solvent single-component polyurethane grouting material and preparation method thereof |
| CN109468109A (en) * | 2018-10-16 | 2019-03-15 | 珠海格力电器股份有限公司 | Dual-component polyurethane adhesive, process for filling colloid and its application in high defense controls devices field |
| CN109734362A (en) * | 2019-01-23 | 2019-05-10 | 四川共拓岩土科技股份有限公司 | A kind of inorganic matter composite polyurethane grouting material and preparation method thereof |
| CN109734362B (en) * | 2019-01-23 | 2022-02-25 | 四川共拓岩土科技股份有限公司 | Inorganic compound polyurethane grouting material and preparation method thereof |
| CN109957085A (en) * | 2019-04-10 | 2019-07-02 | 山东科技大学 | A kind of thin coal pillar wind leaking stoppage flexible material |
| CN112388794A (en) * | 2019-08-19 | 2021-02-23 | 万华化学集团股份有限公司 | Aldehyde-free light-weight shaving board and preparation method thereof |
| CN112388794B (en) * | 2019-08-19 | 2022-07-12 | 万华化学集团股份有限公司 | Aldehyde-free light shaving board and preparation method thereof |
| CN110643017A (en) * | 2019-09-29 | 2020-01-03 | 湖南师范大学 | Hydrophilic environment-friendly polyurethane grouting material and preparation method and application thereof |
| CN111564800A (en) * | 2020-05-26 | 2020-08-21 | 中电保力（北京）科技有限公司 | Waterproof method for cable pipeline to pass through wall |
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Application publication date: 20141210 |