CN103173006A - Hydrophobic polyurethane grouting materials and method for preparing same - Google Patents
Hydrophobic polyurethane grouting materials and method for preparing same Download PDFInfo
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- CN103173006A CN103173006A CN2012105416495A CN201210541649A CN103173006A CN 103173006 A CN103173006 A CN 103173006A CN 2012105416495 A CN2012105416495 A CN 2012105416495A CN 201210541649 A CN201210541649 A CN 201210541649A CN 103173006 A CN103173006 A CN 103173006A
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- 239000000463 material Substances 0.000 title claims abstract description 42
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 38
- 239000004814 polyurethane Substances 0.000 title claims abstract description 37
- 230000002209 hydrophobic effect Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title abstract description 6
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims abstract description 17
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 16
- 229920000570 polyether Polymers 0.000 claims abstract description 16
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004970 Chain extender Substances 0.000 claims abstract description 10
- 229920005862 polyol Polymers 0.000 claims abstract description 4
- 150000003077 polyols Chemical class 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 33
- 238000002360 preparation method Methods 0.000 claims description 18
- -1 polyoxypropylene Polymers 0.000 claims description 15
- 239000002585 base Substances 0.000 claims description 14
- 150000002148 esters Chemical class 0.000 claims description 13
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 12
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000013543 active substance Substances 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 229920001451 polypropylene glycol Polymers 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 claims description 6
- 150000002576 ketones Chemical class 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 6
- 239000005056 polyisocyanate Substances 0.000 claims description 6
- 239000004902 Softening Agent Substances 0.000 claims description 5
- 150000002009 diols Chemical class 0.000 claims description 5
- 239000012970 tertiary amine catalyst Substances 0.000 claims description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 4
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 4
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 4
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 2
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 2
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 2
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 2
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 2
- 229920000053 polysorbate 80 Polymers 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000012948 isocyanate Substances 0.000 abstract description 3
- 150000002513 isocyanates Chemical class 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000007872 degassing Methods 0.000 abstract 1
- 239000004014 plasticizer Substances 0.000 abstract 1
- 239000004094 surface-active agent Substances 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 238000010276 construction Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a hydrophobic polyurethane grouting material and a method for preparing the same. The method comprises the following steps of: (1) uniformly mixing polyether polyol and a chain extender, dewatering and degassing till the water content is smaller than 0.05%, adding isocyanate after the temperature is reduced to 30-50 DEG C, reacting for 2-3hours at 78-85 DEG C to obtain a polyurethane prepolymer, wherein the reaction endpoint is that -NCOwt% content of the polyurethane prepolymer is 10-20%, the weight part ratio of the polyether polyol, the chain extender to the isocyanate is (15-30): (0.75-3): (67-84.25); and (2) cooling the polyurethane prepolymer to 45-70 DEG C, and adding 7-10% of solvent, 0.001-0.004% of retarder, 1-5% of surfactant, 0.1-2% of catalyst and 10-30% of plasticizer for uniform mixing. The hydrophobic polyurethane grouting material prepared by the invention is superior to the common hydrophobic polyurethane grouting material in utilizing performance, bonding strength, and the like, and is provided with better seepage preventing and water plugging functions compared with the consolidating body of the existing hydrophobic polyurethane grouting material.
Description
Technical field
The present invention relates to a kind of hydrophobic polyurethane grouting material and preparation method thereof.
Background technology
Polyurethane grouting material as the organic rapid hardening chemical grouting material of novel high polymer, is that urethane resin is applied in civil construction project, plays a kind of novel material of reinforcing, water blockoff, antiseepage effect.It is the superpolymer of polyurethane(s), is the urethane resin that is formed by isocyanic ester and multi-hydroxy polyether reaction, the common chemical grout that forms of auxiliary agent relevant to other.Contain excessive unreacted isocyanate groups in the urethane slurries, its slurries produce chemical reaction after meeting water immediately, and produce carbon dioxide, cause volume to expand rapidly, the water-fast polymer of final crosslinked generation namely has the rigid gelinite of some strength.Polyurethane grouting material generally is divided into two kinds of hydrophobic polyurethane grouting material and waterborne polyurethane grouting materials.Concretion body strength after hydrophobic polyurethane grouting material solidifies is large, and is impervious good, generally is used for foundation stabilization, has simultaneously the engineering of waterproofing and leakage-stopping concurrently.
Being of wide application of polyurethane grouting material, application project field constantly increase, and at buildings because of the displacement that the different factors such as the temperature difference, sedimentation, earthquake cause, play certain provide protection.Present rigidity after conventional hydrophobic polyurethane class injection material moulding, as after the structural joint of deformation (expansion joint, settlement joint, aseismatic joint) construction is arranged, deformation occurs repeatedly, thereby cause that induration destroys, the situation that appearance crack that can be again leaks needs construction repeatedly.This phenomenon needs to be resolved hurrily.
Summary of the invention
Technical problem to be solved by this invention is to present rigidity after overcoming existing polyurethane grouting material moulding, after the structural joint construction that deformation is arranged, deformation occurs repeatedly, thereby cause that induration destroys, the crack again occurs and leak, need the defective of construction repeatedly, a kind of hydrophobic polyurethane grouting material and preparation method thereof is provided, the hydrophobic polyurethane grouting material grouting use properties that this preparation method makes is good, and elasticity is high, and cohesive strength is high.
One of purpose of the present invention is that a kind of preparation method of hydrophobic polyurethane grouting material is provided; Its step comprises:
(1) polyether glycol and chainextender are mixed, dewater degassed to water content below 0.05%, after being cooled to 30-50 ℃, add isocyanic ester, reaction is 2-3 hour at 78-85 ℃ of temperature, obtain base polyurethane prepolymer for use as, reaction end take base polyurethane prepolymer for use as-NCOwt% content is as 10-20%; Wherein, polyether glycol in described base polyurethane prepolymer for use as raw material: chainextender: the ratio of weight and number of isocyanic ester is (15-30): (0.75-3): (67-84.25);
(2) above-mentioned base polyurethane prepolymer for use as is cooled to 45 ℃-70 ℃ after, add the solvent of 7-10%, the retarder of 0.001-0.004%, the tensio-active agent of 1-5%, the catalyzer of 0.1-2% and the softening agent of 10-30%, mix, get final product; Wherein, described per-cent is the weight percent that accounts for base polyurethane prepolymer for use as;
Wherein, described polyether glycol comprises polyoxypropylene polyol; Described chainextender comprises ethylene glycol and/or butyleneglycol, and described isocyanic ester comprises vulcabond and/or polyisocyanates; Wherein, described vulcabond is ditan-4, and 4 '-vulcabond (MDI), described polyisocyanates are poly methylene poly phenyl poly isocyanate (PAPI); Described catalyzer is tertiary amine catalyst; Described softening agent is one or more in diethyl phthalate, dibutyl phthalate, dioctyl phthalate (DOP); Described solvent is the organic ketone solvent.
Better, described polyether glycol is Polyoxypropylene diol and/or polyoxytrimethylene trivalent alcohol; The functionality of described polyether glycol is 2 or 3, and number-average molecular weight is 2000-5000;
Better, described Polyoxypropylene diol is that DJ-1(relative molecular weight that Shanghai Dongda Chemical Co., Ltd. makes is 2000 ± 200 Polyoxypropylene diol); Described polyoxytrimethylene trivalent alcohol is that DJ-2(relative molecular weight that Shanghai Dongda Chemical Co., Ltd. makes is 3000 ± 200 polyoxytrimethylene trivalent alcohol) and/or the DJ-3(relative molecular mass be the polyoxytrimethylene trivalent alcohol of 5000 ± 200 use ethylene oxide-capped).
In the present invention, the organic ketone solvent that described organic ketone solvent is this area routine; Better, described organic ketone solvent comprises acetone and/or butanone.
In the present invention, described retarder is the retarder of this area routine; Better, described retarder comprises phosphoric acid and/or Benzoyl chloride.
Described tensio-active agent is the tensio-active agent of this area routine; Better, described tensio-active agent comprises one or more in polysiloxane-many alkoxyl groups ether copolymer, Tween-60 and tween-80; Better, described polysiloxane-many alkoxyl groups ether copolymer is segmented copolymer, number-average molecular weight is 500-1000.
The tertiary amine catalyst of described tertiary amine catalyst this area routine; One or more that better is in triethylamine, triethylene diamine, N-methylmorpholine and dimethyl benzylamine.
In step (1), better, described reaction is carried out in reactor.
In step (1), better, described dehydration is degassed to be carried out under condition of negative pressure, better, and the pressure of the degassed processing of described negative pressure dehydration be-0.090pa ~-0.1pa, dewater time of degassed processing of described negative pressure is 2-3 hour.
In step (1), better, after adding isocyanic ester, react under 80-85 ℃ of condition;
In step (1), better, the measuring method of described isocyanate content (NCO%) is:
1. get 10mL chlorobenzene-Di-n-Butyl Amine solution and be placed in Erlenmeyer flask, adding wherein 40mL concentration is the 95%(volume percent) alcohol and 3 tetrabromo-mcresolsulfonphthalein indicator, with the thin out yellow of color of salt acidometric titration mixing solutions, calculate the hydrochloric acid volume V that consumes empty;
2. take appropriate sample and be placed in Erlenmeyer flask, get 10mL chlorobenzene-Di-n-Butyl Amine solution, after sample dissolves fully, adding 40mL concentration is the 95%(volume percent) alcohol, add again 3 tetrabromo-mcresolsulfonphthalein indicator, be titrated in Erlenmeyer flask the color of mixing solutions with hydrochloric acid and become faint yellowly, calculate the hydrochloric acid volume V that consumes.
Calculate isocyano-content NCO% according to following formula.
The m-sample mass, g
C
HCl-concentration of hydrochloric acid, mol/L
V
EmptyThe hydrochloric acid volume that-blank titration consumes, mL
The hydrochloric acid volume that V-titration sample consumes, mL
42-is the molecular weight of NCO group, g/mol
In step (2), better, be cooled to 50 ℃.
Better, after making hydrophobic polyurethane grouting material, carry out quality test, qualified rear packing.
In the present invention, the preparation method of described hydrophobic polyurethane grouting material can make the material that makes have good cohesiveness and elasticity after moulding, in the preparation method's of this restriction condition extremely in the scope of processing step, the ratio of soft section during suitably adjustment is filled a prescription, can make this material have fabulous cohesiveness and elasticity after moulding, better, polyether glycol forms soft section of polymkeric substance, chainextender and forms hard section with isocyanic ester, by different proportionings, reach the different performance index of material.Generally, the content of polyether glycol is higher, and the toughness of material improves, and the content of isocyanic ester is higher, and intensity is larger.
Two of purpose of the present invention is, the hydrophobic polyurethane grouting material that provides a kind of preparation method of hydrophobic polyurethane grouting material to make.Better, the quality index that the present invention makes hydrophobic polyurethane grouting material is as follows: solid content 〉=94wt%; Be 300-360s with set time after 5% water contacts under 25 ℃; The viscosity of 25 ℃ is 400-600mPas; Frothing percentage 〉=500%.
On the basis that meets this area general knowledge, above-mentioned each optimum condition, but arbitrary combination namely get the preferred embodiments of the invention.
Agents useful for same of the present invention and raw material be commercially available getting all.
Positive progressive effect of the present invention is: the technical indicators such as the hydrophobic polyurethane grouting material use properties that the present invention makes and cohesive strength are better than general hydrophobic polyurethane grouting material, and with existing hydrophobic polyurethane grouting material induration easily destroyed defective compare, the effect of better antiseepage, water blockoff is arranged.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.The experimental technique of unreceipted actual conditions in the following example according to ordinary method and condition, or is selected according to catalogue.
Source producer and model raw materials used in following embodiment see Table 1.
Table 1: raw material sources producer and model
The kind of each raw material of embodiment 1-4, model and content thereof see Table 2
Table 2: each raw material and the content thereof of embodiment 1-4
Wherein, the addition of polyether glycol, chainextender and isocyanic ester is ratio of weight and number; The addition of solvent, retarder tensio-active agent, catalyzer and softening agent is the weight percent that accounts for base polyurethane prepolymer for use as.
Embodiment 1
The preparation method:
(1) with the ethylene glycol of DJ-1 and 0.75 weight part of 15 weight parts, drop in reactor, under stirring, carry out under-0.090MPa condition the degassed processing of negative pressure dehydration 3 hours, dewater degassed to water content 0.02, after being cooled to 40 ± 2 ℃, add the PM-200 of 50 weight parts and the MDI-100 of 34.25 weight parts, at 80 ± 2 ℃ of temperature, carried out polyreaction 3 hours, the control performed polymer-NCOwt% content is reaction end between 10-20%;
(2) cooling, add auxiliary agent
After above-mentioned base polyurethane prepolymer for use as is cooled to 70 ℃, the diethyl phthalate that adds the weight percentage 30% of base polyurethane prepolymer for use as, after stirring lower fully dissolving, then add 0.001% phosphoric acid, 5% Tween-60,1% triethylamine, 7% acetone, mix;
3. quality test, packing
Sampling, quality test, qualified rear packing.
Obtained hydrophobic polyurethane grouting material, quality index is as follows:
Solid content wt95%; Add the set time/25 ℃ 350s after 5% water set time; 25 ℃ of 450mPas of viscosity; Frothing percentage 450%; Ultimate compression strength 15KPa.
Embodiment 2-4
According to method and the step of embodiment 1, prepare hydrophobic polyurethane grouting material of the present invention according to the formula of table 1.
Embodiment 5
In step (1), the degassed pressure of negative pressure dehydration be-0.098pa, and dewater time of degassed processing of negative pressure is 2, and all the other conditions are all identical with embodiment 1.
Embodiment 6,7
In step (1), negative pressure dehydration is degassed is cooled to respectively 30 ℃ and 50 ℃ afterwards, and all the other conditions are all identical with embodiment 4.
Embodiment 8
In step (1), after adding isocyanic ester, the temperature of reaction is 83 ± 2 ℃, and all the other conditions are all identical with embodiment 2.
Embodiment 9,10
In step (2), carry out subsequent step after base polyurethane prepolymer for use as is cooled to respectively 45 ℃ and 60 ℃, all the other conditions are all identical with embodiment 3.
Comparative Examples 1
Product performance and the index of the hydrophobic polyurethane grouting material that embodiment 1-4 makes see Table 3.
Table 3: the product performance of the hydrophobic polyurethane grouting material that embodiment 1-4 makes and index
DOPU-201 is for buying the hydrophobic polyurethane grouting material from Shanghai Dongda Polyurethane Co., Ltd.
The witness mark Chinese building material industry standard of above-mentioned indices: polyurethane grouting material JC/2041-2010.
Wherein, the viscosity of described 25 ℃ between 400-800mPa.s, the better performances of product.
Described tension set is the smaller the better, low permanentset is the Focal point and difficult point of this area research and development of products just, permanentset of the present invention compared with prior art, is only below 1/10th of prior art, and this is also the positive progressive effect place that the present invention gives prominence to.
Claims (10)
1. the preparation method of a hydrophobic polyurethane grouting material, it is characterized in that: its step comprises:
(1) polyether glycol and chainextender are mixed, dewater degassed to water content below 0.05%, after being cooled to 30-50 ℃, add isocyanic ester, reaction is 2-3 hour at 78-85 ℃ of temperature, obtain base polyurethane prepolymer for use as, reaction end take base polyurethane prepolymer for use as-NCOwt% content is as 10-20%; Wherein, polyether glycol in described base polyurethane prepolymer for use as raw material: chainextender: the ratio of weight and number of isocyanic ester is (15-30): (0.75-3): (67-84.25);
(2) above-mentioned base polyurethane prepolymer for use as is cooled to 45 ℃-70 ℃ after, add the solvent of 7-10%, the retarder of 0.001-0.004%, the tensio-active agent of 1-5%, the catalyzer of 0.1-2% and the softening agent of 10-30%, mix, get final product; Wherein, described per-cent is the weight percent that accounts for base polyurethane prepolymer for use as;
Wherein, described polyether glycol comprises polyoxypropylene polyol; Described chainextender comprises ethylene glycol and/or butyleneglycol, and described isocyanic ester comprises vulcabond and/or polyisocyanates; Wherein, described vulcabond is ditan-4, and 4 '-vulcabond, described polyisocyanates are poly methylene poly phenyl poly isocyanate; Described catalyzer is tertiary amine catalyst; Described softening agent is one or more in diethyl phthalate, dibutyl phthalate, dioctyl phthalate (DOP); Described solvent is the organic ketone solvent.
2. preparation method as claimed in claim 1, it is characterized in that: described polyether glycol is Polyoxypropylene diol and/or polyoxytrimethylene trivalent alcohol; The functionality of described polyether glycol is 2 or 3, and number-average molecular weight is 2000-5000;
Wherein, the better DJ-1 that makes for Shanghai Dongda Chemical Co., Ltd. of described Polyoxypropylene diol; The DJ-2 and/or the DJ-3 that make for Shanghai Dongda Chemical Co., Ltd. that described polyoxytrimethylene trivalent alcohol is better.
3. preparation method as claimed in claim 1, it is characterized in that: described organic ketone solvent comprises acetone and/or butanone.
4. preparation method as claimed in claim 1, it is characterized in that: described retarder comprises phosphoric acid and/or Benzoyl chloride.
5. preparation method as claimed in claim 1, it is characterized in that: described tensio-active agent comprises one or more in polysiloxane-many alkoxyl groups ether copolymer, Tween-60 and tween-80; Better, described polysiloxane-many alkoxyl groups ether copolymer is segmented copolymer, number-average molecular weight is 500-1000.
6. preparation method as claimed in claim 1, it is characterized in that: described tertiary amine catalyst is one or more in triethylamine, triethylene diamine, N-methylmorpholine and dimethyl benzylamine.
7. preparation method as claimed in claim 1, it is characterized in that: in step (1), described reaction is carried out in reactor.
8. preparation method as claimed in claim 1, it is characterized in that: in step (1), described dehydration is degassed to be carried out under condition of negative pressure, better, the pressure of the degassed processing of described negative pressure dehydration be-0.090pa ~-0.1pa, dewater time of degassed processing of described negative pressure is 2-3 hour;
In step (1), after adding isocyanic ester, react under 80-85 ℃ of condition;
In step (2), better, be cooled to 50 ℃.
9. hydrophobic polyurethane grouting material that preparation method as described in any one in claim 1-8 makes.
10. hydrophobic polyurethane grouting material as claimed in claim 9, it is characterized in that: the quality index of described hydrophobic polyurethane grouting material is as follows: solid content 〉=94wt%; Be 300-360s with set time after 5% water contacts under 25 ℃; The viscosity of 25 ℃ is 400-600mPas; Frothing percentage 〉=500%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105985518A (en) * | 2015-01-27 | 2016-10-05 | 上海东大化学有限公司 | Polyether polyol, synthesis method thereof, and polyurethane grouting material prepared therefrom |
| CN110643017A (en) * | 2019-09-29 | 2020-01-03 | 湖南师范大学 | A kind of hydrophilic environment-friendly polyurethane grouting material and preparation method and application |
| CN111978709A (en) * | 2020-08-27 | 2020-11-24 | 四川童燊防水工程有限公司 | TS-68 hydrophobic polyurethane grouting material and preparation method thereof |
| CN112876635A (en) * | 2021-02-05 | 2021-06-01 | 浙江鲁班建材科技股份有限公司 | Low-foaming strong-bonding elastic polyurethane grouting material and preparation method thereof |
| CN115124300A (en) * | 2022-05-20 | 2022-09-30 | 中铁上海工程局集团市政环保工程有限公司 | Special waterborne polyurethane grouting material for trenchless spiral winding repairing technology and preparation method thereof |
Citations (3)
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| CN102070761A (en) * | 2010-11-23 | 2011-05-25 | 上海东大聚氨酯有限公司 | Chemic grouting polyurethane material, prepolymer thereof and preparation method |
| CN102093536A (en) * | 2010-12-30 | 2011-06-15 | 上海东大聚氨酯有限公司 | Polyurethane prepolymer, polyurethane grouting material and preparation method thereof |
| CN102492287A (en) * | 2011-11-30 | 2012-06-13 | 上海东大化学有限公司 | Preparation method of environment-friendly hydrophobic polyurethane grouting material |
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| CN102070761A (en) * | 2010-11-23 | 2011-05-25 | 上海东大聚氨酯有限公司 | Chemic grouting polyurethane material, prepolymer thereof and preparation method |
| CN102093536A (en) * | 2010-12-30 | 2011-06-15 | 上海东大聚氨酯有限公司 | Polyurethane prepolymer, polyurethane grouting material and preparation method thereof |
| CN102492287A (en) * | 2011-11-30 | 2012-06-13 | 上海东大化学有限公司 | Preparation method of environment-friendly hydrophobic polyurethane grouting material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105985518A (en) * | 2015-01-27 | 2016-10-05 | 上海东大化学有限公司 | Polyether polyol, synthesis method thereof, and polyurethane grouting material prepared therefrom |
| CN105985518B (en) * | 2015-01-27 | 2019-01-01 | 上海东大化学有限公司 | A kind of polyurethane grouting material of polyether polyol, synthetic method and its preparation |
| CN110643017A (en) * | 2019-09-29 | 2020-01-03 | 湖南师范大学 | A kind of hydrophilic environment-friendly polyurethane grouting material and preparation method and application |
| CN111978709A (en) * | 2020-08-27 | 2020-11-24 | 四川童燊防水工程有限公司 | TS-68 hydrophobic polyurethane grouting material and preparation method thereof |
| CN112876635A (en) * | 2021-02-05 | 2021-06-01 | 浙江鲁班建材科技股份有限公司 | Low-foaming strong-bonding elastic polyurethane grouting material and preparation method thereof |
| CN115124300A (en) * | 2022-05-20 | 2022-09-30 | 中铁上海工程局集团市政环保工程有限公司 | Special waterborne polyurethane grouting material for trenchless spiral winding repairing technology and preparation method thereof |
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