CN107760249B - Non-bubbling road crack pouring adhesive used in high-temperature and high-humidity environment and preparation method thereof - Google Patents
Non-bubbling road crack pouring adhesive used in high-temperature and high-humidity environment and preparation method thereof Download PDFInfo
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- CN107760249B CN107760249B CN201710834916.0A CN201710834916A CN107760249B CN 107760249 B CN107760249 B CN 107760249B CN 201710834916 A CN201710834916 A CN 201710834916A CN 107760249 B CN107760249 B CN 107760249B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
- C08G18/289—Compounds containing at least one heteroatom other than oxygen or nitrogen containing silicon
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08K2201/011—Nanostructured additives
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention relates to the technical field of road crack pouring glue, in particular to non-bubbling road crack pouring glue used in a high-temperature and high-humidity environment and a preparation method thereof. This non-bubbling road crack pouring adhesive that uses under high temperature and high humidity environment includes: silane modified polyurethane prepolymer, plasticizer, filler, adhesion promoter, anti-settling agent, catalyst, light stabilizer, antioxidant, water scavenger and solvent; the silane modified polyurethane prepolymer comprises: polyoxypropylene diol, isocyanate, silane and catalyst. The preparation method of the non-bubbling road joint grouting glue used in the high-temperature and high-humidity environment comprises the following steps: step one, preparing a silane modified polyurethane prepolymer; and step two, preparing the road crack pouring glue. The road crack pouring adhesive has the advantages of high elongation, low modulus, good adhesion with concrete, no debonding when the displacement of the substrate becomes large, no bubbling in the construction under the high-temperature and high-humidity environment, and suitability for outdoor road construction in summer. The preparation method has the advantage of simple process.
Description
Technical Field
The invention relates to the technical field of road crack pouring glue, in particular to non-bubbling road crack pouring glue used in a high-temperature and high-humidity environment and a preparation method thereof.
Background
In the past, the main use of the asphalt for paving the traffic roads in China is asphalt, but the asphalt is easy to crack at low temperature and flow at high temperature. At present, roads, especially bridges and tunnels are paved by using concrete gradually, in order to reduce the damage of the concrete to the roads caused by thermal expansion and cold contraction, cutting is carried out on the road surfaces at certain intervals to form cutting seams, and grouting and repairing are carried out in the cutting seams to protect the roads.
At present, common road crack pouring materials comprise asphalt, modified asphalt, polyurethane, epoxy resin and the like, wherein the asphalt and the modified asphalt have the defect of complex construction process and need to be heated and grooved in the construction process; due to low elongation of the epoxy resin, the concrete is easy to crack when being greatly deformed; polyurethane joint sealing glue is the most commonly used one, but also has the following disadvantages: the surface temperature of outdoor roads in summer is up to 50-60 ℃, sometimes, water is accumulated on the road surface, and the polyurethane crack pouring adhesive is easy to foam under the high-temperature and high-humidity environment, so that the adhesion of the polyurethane crack pouring adhesive and concrete is influenced, water seepage can be caused in the later period, and the service life of the roads is seriously influenced.
Disclosure of Invention
One of the purposes of the invention is to provide a non-bubbling road joint grouting glue used in a high-temperature and high-humidity environment, aiming at overcoming the defects of the prior art, the road joint grouting glue can not be used for bonding polyurethane joint grouting glue and concrete, can avoid later-stage water seepage, and prolongs the service life of a road.
The second purpose of the invention is to provide a preparation method of the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment aiming at the defects of the prior art.
In order to achieve one of the purposes, the invention adopts the following technical scheme:
the non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment is prepared from the following components in parts by weight:
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
preferably, the non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment is prepared from the following components in parts by weight:
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
the polyoxypropylene diol is of a bifunctional degree, wherein the unsaturation degree of the polyoxypropylene diol is 0.001-0.04 meq/g, and the molecular weight is 8000-20000.
The silane is silane containing active hydrogen;
the silane containing active hydrogen is mercaptosilane or secondary aminosilane.
The plasticizer is one or a composition of more than two of dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, dioctyl adipate, dioctyl sebacate, dioctyl azelate, triphenyl phosphate, diphenyl isooctyl phosphate or alkyl sulfonate plasticizers.
The isocyanate is one or a composition of more than two of toluene 2, 4-diisocyanate, toluene 2, 6-diisocyanate, 4-diphenylmethane diisocyanate, polyphenyl methane polyisocyanate, naphthalene 1, 5-diisocyanate, 1, 3-phenylene diisocyanate, 1, 4-phenylene diisocyanate, 1, 6-hexamethylene diisocyanate, 2, 4-trimethyl-1, 6-hexamethylene diisocyanate, di (isocyanate) cyclohexane, 1, 4-cyclohexane diisocyanate, xylylene diisocyanate, propylene diisocyanate, 1, 12-dodeca diisocyanate, isophorone diisocyanate, 1, 6-hexamethylene diisocyanate or isophorone diisocyanate.
The filler is one or a composition of more than two of light calcium carbonate, fatty acid or fatty acid salt modified calcium carbonate, calcined kaolin, silicon dioxide, PVC powder, talcum powder, organic montmorillonite, diatomite, titanium dioxide, hollow spheres or carbon black;
the adhesion promoter is one or a composition of more than two of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane or gamma-mercaptopropyltrimethoxysilane;
the anti-settling agent is one or a composition of more than two of polyurea derivatives, hydrogenated castor oil, polyamide or nano fumed silica;
the catalyst is one or a composition of more than two of stannous octoate, dibutyltin dilaurate, dibutyltin diacetate, triethylene diamine, bis (dimethylaminoethyl) ether, N-ethyl morpholine, dimorpholine diethyl ether or N-methylimidazole;
the light stabilizer is benzotriazole ultraviolet light absorber or hindered amine ultraviolet light stabilizer;
the antioxidant is one or a composition of more than two of Irgastab PUR68, antioxidant 1010 or Irganox 5057;
the water removing agent is one or a composition of more than two of molecular sieve, calcium oxide, adhesion promoter, p-toluenesulfonyl isocyanate, trimethyl orthoformate or oxazolidine water removing agent;
the solvent is one or a composition of more than two of toluene, xylene, aromatic oil, naphtha or hydrocarbon solvents;
the benzotriazole ultraviolet light absorber is Tinuvin213 or UV-320;
the ultraviolet light stabilizer of the hindered amine is 4-benzoyloxy-2, 2,6, 6-tetramethyl piperidine.
In order to achieve the second purpose, the invention adopts the following technical scheme:
the preparation method of the non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment comprises the following steps:
step one, preparing a silane modified polyurethane prepolymer: adding polyoxypropylene glycol with a formula amount into a reaction kettle, heating to a certain temperature, dehydrating for a certain time under a certain vacuum degree, cooling to a certain temperature, adding isocyanate and a catalyst with a formula amount, reacting for a certain time, adding silane with a formula amount, and reacting for a certain time to obtain the silane modified polyurethane prepolymer;
step two, preparing the road crack pouring glue: and (2) adding the silane-modified polyurethane prepolymer prepared in the step one, the filler, the plasticizer, the anti-settling agent and the solvent into a mixer according to the formula amount, then dispersing for a certain time, adding the adhesion promoter according to the formula amount, then continuing to disperse for a certain time, adding the catalyst and the water removing agent according to the formula amount, continuing to disperse and degassing for a certain time, and thus obtaining the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment.
In the technical scheme, the first step is to prepare the silane-modified polyurethane prepolymer: adding polyoxypropylene glycol with the formula amount into a reaction kettle, heating to 110-120 ℃, dehydrating for 30-60 min under the vacuum degree of 0.01-0.095 MPa, cooling to 55-65 ℃, adding isocyanate and a catalyst with the formula amount, reacting for 1.5-4 h, adding silane with the formula amount, and reacting for 1.5-2.5 h to obtain the silane modified polyurethane prepolymer.
In the above technical scheme, the step two, the preparation of the road crack pouring sealant: adding the silane-modified polyurethane prepolymer prepared in the step one, a filler, a plasticizer, an anti-settling agent and a solvent into a mixer according to the formula amount, then dispersing for 20-40 min, adding an adhesion promoter according to the formula amount, then continuously dispersing for 3-8 min, adding a catalyst and a water removing agent according to the formula amount, continuously dispersing and degassing for 7-15 min to obtain the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment;
the mixer is a double-planet mixer or a kneader with a high-speed dispersion disc;
when the mixer is a double-planet mixer with a high-speed dispersion disc, and the vacuum degree is controlled to be 0.01MPa to 0.095MPa during dispersion;
when the mixer is a kneader and is dispersed, the temperature of the kneader is controlled to be 40-60 ℃.
Compared with the prior art, the invention has the beneficial effects that:
(1) compared with the road crack pouring adhesive in the prior art, the non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment has the advantages of high elongation, low modulus, good adhesion with concrete, no debonding when the displacement of the base material is increased, no bubbling during construction in the high-temperature and high-humidity environment, and suitability for outdoor road construction in summer.
(2) The preparation method of the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment provided by the invention has the characteristics of simple preparation method and suitability for industrial large-scale production.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1.
The non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment is prepared from the following components in parts by weight:
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
wherein the polyoxypropylene diol is a di-functionality, the unsaturation degree of the polyoxypropylene diol is 0.001-0.04 meq/g, and the molecular weight is 8000-20000.
Wherein, the silane is silane containing active hydrogen; wherein the silane containing active hydrogen is mercaptosilane or secondary aminosilane.
Wherein the plasticizer is one or a composition of more than two of dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, dioctyl adipate, dioctyl sebacate, dioctyl azelate, triphenyl phosphate, diphenylisooctyl phosphate or alkyl sulfonate plasticizers.
Wherein the isocyanate is one or a composition of more than two of toluene 2, 4-diisocyanate, toluene 2, 6-diisocyanate, 4-diphenylmethane diisocyanate, polyphenyl methane polyisocyanate, naphthalene 1, 5-diisocyanate, 1, 3-phenylene diisocyanate, 1, 4-phenylene diisocyanate, 1, 6-hexamethylene diisocyanate, 2, 4-trimethyl-1, 6-hexamethylene diisocyanate, di (isocyanate) cyclohexane, 1, 4-cyclohexane diisocyanate, xylylene diisocyanate, propylene diisocyanate, 1, 12-dodeca diisocyanate, isophorone diisocyanate, 1, 6-hexamethylene diisocyanate or isophorone diisocyanate.
Wherein, the filler is one or a composition of more than two of light calcium carbonate, calcium carbonate modified by fatty acid or fatty acid salt, calcined kaolin, silicon dioxide, PVC powder, talcum powder, organic montmorillonite, diatomite, titanium dioxide, hollow spheres or carbon black;
wherein the adhesion promoter is one or the composition of more than two of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane or gamma-mercaptopropyltrimethoxysilane;
wherein, the anti-settling agent is one or a composition of more than two of polyurea derivatives, hydrogenated castor oil, polyamide or nano fumed silica;
wherein the catalyst is one or a composition of more than two of stannous octoate, dibutyltin dilaurate, dibutyltin diacetate, triethylenediamine, bis (dimethylaminoethyl) ether, N-ethylmorpholine, dimorpholindiethyl ether or N-methylimidazole;
wherein the light stabilizer is benzotriazole ultraviolet light absorber or hindered amine ultraviolet light stabilizer;
wherein the antioxidant is one or a composition of more than two of Irgastab PUR68, antioxidant 1010 and Irganox 5057;
wherein, the water removing agent is one or a composition of more than two of molecular sieve, calcium oxide, adhesion promoter, p-toluenesulfonyl isocyanate, trimethyl orthoformate or oxazolidine water removing agent;
wherein the solvent is one or a composition of more than two of toluene, xylene, aromatic oil, naphtha or hydrocarbon solvents;
wherein, the benzotriazole ultraviolet light absorber is Tinuvin213 or UV-320;
wherein the ultraviolet light stabilizer of the hindered amine is 4-benzoyloxy-2, 2,6, 6-tetramethyl piperidine.
The preparation method of the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment comprises the following steps:
step one, preparing a silane modified polyurethane prepolymer: adding polyoxypropylene glycol with the formula amount into a reaction kettle, heating to 110-120 ℃, dehydrating for 30-60 min under the vacuum degree of 0.01-0.095 MPa, cooling to 55-65 ℃, adding isocyanate and a catalyst with the formula amount, reacting for 1.5-4 h, adding silane with the formula amount, and reacting for 1.5-2.5 h to obtain the silane modified polyurethane prepolymer;
step two, preparing the road crack pouring glue: and (2) adding the silane-modified polyurethane prepolymer prepared in the step one, the filler, the plasticizer, the anti-settling agent and the solvent into a mixer according to the formula amount, then dispersing for 20-40 min, then adding the adhesion promoter according to the formula amount, then continuously dispersing for 3-8 min, then adding the catalyst and the water removal agent according to the formula amount, continuously dispersing and degassing for 7-15 min, and thus obtaining the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment.
Wherein the mixer is a double-planet mixer or a kneader with a high-speed dispersion disc;
when the mixer is a double-planet mixer with a high-speed dispersion disc, the vacuum degree is controlled to be 0.01MPa to 0.095MPa when the dispersion is carried out;
when the mixer is a kneader and the dispersion is carried out, the temperature of the kneader is controlled to be 40-60 ℃.
Example 2.
The non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment is prepared from the following components in parts by weight:
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
wherein the polyoxypropylene diol is a difunctional diol, wherein the polyoxypropylene diol has an unsaturation of 0.01meq/g and a molecular weight of 15000.
Wherein, the silane is silane containing active hydrogen; wherein, the silane containing active hydrogen is mercaptosilane.
Wherein the plasticizer is dioctyl phthalate.
Wherein the isocyanate is toluene 2, 4-diisocyanate.
Wherein, the filler is light calcium carbonate;
wherein the adhesion promoter is gamma-aminopropyl triethoxysilane;
wherein the anti-settling agent is a polyurea derivative;
wherein the catalyst is stannous octoate;
wherein the light stabilizer is benzotriazole ultraviolet light absorber;
wherein the antioxidant is Irgastab PUR 68;
wherein the water removing agent is a molecular sieve;
wherein the solvent is toluene;
wherein, the benzotriazole ultraviolet light absorber is Tinuvin 213;
the preparation method of the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment comprises the following steps:
step one, preparing a silane modified polyurethane prepolymer: adding polyoxypropylene glycol with the formula amount into a reaction kettle, heating to 15 ℃, dehydrating for 45min under the vacuum degree of 0.05MPa, cooling to 60 ℃, adding isocyanate and a catalyst with the formula amount, reacting for 3h, adding silane with the formula amount, and reacting for 2h to obtain the silane modified polyurethane prepolymer;
step two, preparing the road crack pouring glue: and (2) adding the silane-modified polyurethane prepolymer prepared in the step one, the filler, the plasticizer, the anti-settling agent and the solvent into a mixer according to the formula amount, then dispersing for 30min, then adding the adhesion promoter according to the formula amount, then continuing to disperse for 5min, then adding the catalyst and the water removal agent according to the formula amount, continuing to disperse and degassing for 10min, and thus obtaining the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment.
Wherein the mixer is a double-planet mixer with a high-speed dispersion disc;
when the mixer is a double-planetary mixer with a high-speed dispersion disc, the vacuum degree is controlled to be 0.05MPa during dispersion.
Example 3.
The non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment is prepared from the following components in parts by weight:
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
wherein the polyoxypropylene diol is a di-functionality, wherein the polyoxypropylene diol has an unsaturation of 0.001meq/g and a molecular weight of 8000.
Wherein, the silane is silane containing active hydrogen; wherein the silane containing active hydrogen is a secondary aminosilane.
Wherein the plasticizer is diisononyl phthalate.
Wherein the isocyanate is toluene 2, 6-diisocyanate.
Wherein the filler is calcined kaolin;
wherein the adhesion promoter is gamma-aminopropyl trimethoxy silane;
wherein the anti-settling agent is hydrogenated castor oil;
wherein the catalyst is dibutyltin dilaurate;
wherein the light stabilizer is an ultraviolet light stabilizer of hindered amine;
wherein the antioxidant is antioxidant 1010;
wherein the water removing agent is calcium oxide;
wherein the solvent is xylene;
wherein the ultraviolet light stabilizer of the hindered amine is 4-benzoyloxy-2, 2,6, 6-tetramethyl piperidine.
The preparation method of the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment comprises the following steps:
step one, preparing a silane modified polyurethane prepolymer: adding polyoxypropylene glycol with the formula amount into a reaction kettle, heating to 110 ℃, dehydrating for 30min under the vacuum degree of 0.01MPa, cooling to 55 ℃, adding isocyanate and a catalyst with the formula amount, reacting for 1.5h, adding silane with the formula amount, and reacting for 1.5h to obtain the silane modified polyurethane prepolymer;
step two, preparing the road crack pouring glue: and (2) adding the silane-modified polyurethane prepolymer prepared in the step one, the filler, the plasticizer, the anti-settling agent and the solvent into a mixer according to the formula amount, then dispersing for 20min, then adding the adhesion promoter according to the formula amount, then continuing to disperse for 3min, then adding the catalyst and the water removal agent according to the formula amount, continuing to disperse and degas for 7min, and thus obtaining the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment.
Wherein the mixer is a kneader;
when the mixer is a kneader, the temperature of the kneader is controlled to 50 ℃ when dispersing.
Example 4.
The non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment is prepared from the following components in parts by weight:
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
wherein, the polyoxypropylene diol is of two-functionality, wherein the unsaturation degree of the polyoxypropylene diol is 0.04meq/g, and the molecular weight is 20000.
Wherein, the silane is silane containing active hydrogen; wherein, the silane containing active hydrogen is mercaptosilane.
Wherein the plasticizer is a composition of diisodecyl phthalate, dioctyl adipate and dioctyl sebacate.
Wherein the isocyanate is a combination of 4, 4-diphenylmethane diisocyanate, polyphenyl methane polyisocyanate, naphthalene 1, 5-diisocyanate and 1, 3-phenylene diisocyanate.
Wherein, the filler is a composition of calcium carbonate modified by fatty acid or fatty acid salt, PVC powder and talcum powder;
wherein the adhesion promoter is a composition of gamma-glycidoxypropyltrimethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane and beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane;
wherein the anti-settling agent is a composition of polyamide and nano fumed silica;
wherein the catalyst is a composition of dibutyltin diacetate, triethylenediamine, bis (dimethylaminoethyl) ether and N-ethylmorpholine;
wherein the light stabilizer is benzotriazole ultraviolet light absorber
Wherein the antioxidant is a composition of antioxidant 1010 and Irganox 5057;
wherein the water removing agent is a composition of an adhesion promoter, p-toluenesulfonyl isocyanate and trimethyl orthoformate;
wherein the solvent is a composition of aromatic oil and naphtha;
wherein, the benzotriazole ultraviolet light absorber is UV-320;
the preparation method of the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment comprises the following steps:
step one, preparing a silane modified polyurethane prepolymer: adding polyoxypropylene glycol with the formula amount into a reaction kettle, heating to 120 ℃, dehydrating for 60min under the vacuum degree of 0.095MPa, cooling to 65 ℃, adding isocyanate and a catalyst with the formula amount, reacting for 4h, adding silane with the formula amount, and reacting for 2.5h to obtain the silane modified polyurethane prepolymer;
step two, preparing the road crack pouring glue: and (2) adding the silane-modified polyurethane prepolymer prepared in the step one, the filler, the plasticizer, the anti-settling agent and the solvent into a mixer according to the formula amount, then dispersing for 40min, then adding the adhesion promoter according to the formula amount, then continuing to disperse for 8min, then adding the catalyst and the water removal agent according to the formula amount, continuing to disperse and degassing for 15min, and thus obtaining the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment.
Wherein the mixer is a double-planet mixer with a high-speed dispersion disc;
when the mixer is a double-planetary mixer with a high-speed dispersion disc, the vacuum degree is controlled to be 0.01MPa during dispersion. Example 5.
The non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment is prepared from the following components in parts by weight:
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
wherein the polyoxypropylene diol has a difunctional degree, wherein the polyoxypropylene diol has an unsaturation degree of 0.03meq/g and a molecular weight of 10000.
Wherein, the silane is silane containing active hydrogen; wherein, the silane containing active hydrogen is mercaptosilane.
Wherein the plasticizer is a composition of triphenyl phosphate, diphenyl isooctyl phosphate and alkyl sulfonate plasticizer.
Wherein the isocyanate is a composition of xylylene diisocyanate, propylene diisocyanate, 1, 12-dodecane diisocyanate and isophorone diisocyanate.
Wherein, the filler is a composition of diatomite, titanium dioxide and carbon black;
wherein the adhesion promoter is a composition of beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane and gamma-mercaptopropyltrimethoxysilane;
wherein the anti-settling agent is a composition of polyamide and nano fumed silica;
wherein the catalyst is a composition of bis (dimethylaminoethyl) ether, N-ethylmorpholine, dimorpholinodiethylether and N-methylimidazole;
wherein the light stabilizer is an ultraviolet light stabilizer of hindered amine;
wherein the antioxidant is Irganox 5057;
wherein the water removing agent is a composition of p-toluenesulfonyl isocyanate, trimethyl orthoformate and oxazolidine water removing agent;
wherein the solvent is a hydrocarbon solvent;
wherein the ultraviolet light stabilizer of the hindered amine is 4-benzoyloxy-2, 2,6, 6-tetramethyl piperidine.
The preparation method of the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment comprises the following steps:
step one, preparing a silane modified polyurethane prepolymer: adding polyoxypropylene glycol with the formula amount into a reaction kettle, heating to 112 ℃, dehydrating for 35min under the vacuum degree of 0.08MPa, cooling to 58 ℃, adding isocyanate and a catalyst with the formula amount, reacting for 3h, adding silane with the formula amount, and reacting for 1.8h to obtain the silane modified polyurethane prepolymer;
step two, preparing the road crack pouring glue: and (2) adding the silane-modified polyurethane prepolymer prepared in the step one, the filler, the plasticizer, the anti-settling agent and the solvent into a mixer according to the formula amount, then dispersing for 35min, then adding the adhesion promoter according to the formula amount, then continuing to disperse for 7min, then adding the catalyst and the water removal agent according to the formula amount, continuing to disperse and degassing for 9min, and thus obtaining the non-bubbling road crack pouring sealant used in the high-temperature and high-humidity environment.
Wherein the mixer is a kneader;
when the mixer is a kneader, the temperature of the kneader is controlled to 40 ℃ when dispersing.
Comparative experiment:
preparation example 1:
the preparation method of the non-bubbling road crack pouring adhesive used in the high-temperature and high-humidity environment comprises the following steps:
the method comprises the following steps: preparing a silane modified polyurethane prepolymer P1: 2400g of polyoxypropylene ether glycol with the molecular weight of 12000 is dehydrated for 2h in a reaction kettle at the temperature of 110 ℃ and 120 ℃ under the vacuum condition of 0.096MPa, the temperature is reduced to 60 ℃, 70g of Toluene Diisocyanate (TDI) and dibutyltin dilaurate (T12) accounting for 0.02 percent of the total mass of the mixture are added for reaction for 3.0h, 47g N-n-butyl aminopropyl trimethoxysilane is added for reaction until no NCO peak exists, and the modified polyurethane prepolymer is obtained.
Step two: a preparation method of a non-bubbling road crack pouring adhesive used in a high-temperature and high-humidity environment comprises the following steps:
200g of the silane-modified polyurethane prepolymer prepared by the method, 240g of dried nano calcium carbonate, 240g of didecyl phthalate, 12g of anti-settling agent and 40g of xylene, wherein 1.0g of color master batch (black) is mixed and dispersed for 30min in a double-planetary mixer with a high-speed dispersion disc at the vacuum degree of 0.096MPa and the temperature of 50 ℃, 6g of vinyltrimethoxysilane, 1.8g of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane (A-187), 6.0g of N- (aminoethyl) -3-aminopropyltrimethoxysilane (A-1120) are added and dispersed for 5min, 1.0g of dibutyltin dilaurate, 0.8g of light stabilizer (292) and 0.8g of antioxidant (245) are added and dispersed and degassed for 10min to obtain the single-component road crack pouring sealant, and the composition and the performance of the single-component road crack pouring sealant are shown in tables 1 and 2.
Preparation example 2:
the method comprises the following steps: preparing a modified polyurethane prepolymer P2: 2400g of polyoxypropylene diol with the molecular weight of 8000 is dehydrated for 2 hours in a reaction kettle at the temperature of 110-20 ℃ under the vacuum condition of 0.096MPa, the temperature is reduced to 80 ℃, 133.3 isophorone cyanate (IPDI) and dibutyltin dilaurate (T12) accounting for 0.02 percent of the total mass of the mixture are added for reaction for 3.0 hours, 58.8g of 3-mercaptopropyl trimethoxy silane is added for reaction until no NCO peak exists, and the modified polyurethane prepolymer is obtained.
Step two: preparing a crack pouring adhesive: the composition and properties of step two of example 1 were the same except that P2 was used instead of P1, as shown in tables 1 and 2 below.
Preparation example 3:
the method comprises the following steps: preparing a modified polyurethane prepolymer P3: 3200g of polyoxypropylene glycol with the molecular weight of 16000 is dehydrated for 2 hours in a reaction kettle at the temperature of 110-20 ℃ under the vacuum condition of 0.096MPa, the temperature is reduced to 80 ℃, 67.2g of 1, 6-Hexamethylene Diisocyanate (HDI) and dibutyltin dilaurate (T12) accounting for 0.02 percent of the total mass of the mixture are added for reaction for 3.0 hours, 51g N-phenyl-gamma-aminopropyltrimethoxysilane is added for reaction until no NCO peak exists, and the modified polyurethane prepolymer is obtained.
Step two: preparing a crack pouring adhesive: the composition and properties of step two of example 1 were the same except that P3 was used instead of P1, as shown in tables 1 and 2 below.
Comparative example 1:
the method comprises the following steps: preparation of polyurethane prepolymer P4: 2400g of polyoxypropylene diol with the molecular weight of 12000 is dehydrated for 2 hours in a reaction kettle at the temperature of 110 ℃ and 120 ℃ under the vacuum condition of 0.096MPa, the temperature is reduced to 60 ℃, 70g of Toluene Diisocyanate (TDI) and dibutyltin dilaurate (T12) accounting for 0.02 percent of the total mass of the mixture are added, and the reaction is carried out for 3.0 hours, so as to obtain the polyurethane prepolymer.
Step two: preparation of a single-component road crack pouring adhesive:
200g of polyurethane prepolymer prepared by the method, 240g of dried nano calcium carbonate, 240g of didecyl phthalate, 12g of anti-settling agent and 40g of xylene, wherein 1.0g of color master batch (black) is mixed and dispersed for 30min in a double-planetary mixer with a high-speed dispersion disc at the vacuum degree of 0.096MPa and the temperature of 50 ℃, 6g of p-methyl benzenesulfonyl isocyanate (PTSI) and 1.8g of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane (A-187) are added and dispersed for 5min, 1.0g of dibutyltin dilaurate, 0.8g of light stabilizer (292) and 0.8g of antioxidant (245) are added and dispersed and degassed for 10min to obtain the single-component road crack pouring sealant, and the composition and the performance of the single-component road crack pouring sealant are shown in tables 1 and 2 below.
Table 1: composition of sealant
Table 2: performance of the sealant
The test method comprises the following steps:
(1) high temperature and high humidity bubble test: applying adhesive tape with thickness of 2-3mm on a concrete substrate with thickness of 100mm, 50mm and 10mm, immediately putting the concrete substrate into a 60 ℃ oven (internally provided with a cup of water) to be dried for 1h, cutting off and observing bubbles, wherein the bubbles are excellent, the number of the bubbles is 3-20, the common number is larger than 20, and the difference is larger than 20.
(2) Soaking and bonding: applying adhesive tape with thickness of 2-3mm on a concrete substrate with thickness of 100mm x 50mm x 10mm, curing for 7 days under the condition of 23 ℃/50% humidity, soaking in hot water with temperature of 75 ℃ for 3 days, observing the bonding condition, judging that the cohesive failure is greater than 80% as excellent, 70-80% as good, and the cohesive failure is less than 70% as poor.
As shown in tables 1 and 2: the crack pouring glue prepared in the preparation examples 1 to 3 has high elongation, is free from bubbles after being cured in a high-temperature and high-humidity environment, has excellent bonding performance with concrete, and can well meet the construction environment of road crack pouring in summer.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a road crack pouring glue that does not bubble of construction under high temperature and high humidity environment which characterized in that: the paint is prepared from the following components in parts by weight:
20 to 60 portions of silane modified polyurethane prepolymer
15 to 35 portions of plasticizer
20 to 60 portions of filler
0.2 to 1 portion of adhesion promoter
1 to 15 portions of anti-settling agent
0.01 to 0.5 portion of catalyst
0.1 to 0.4 portion of light stabilizer
0.1 to 0.4 portion of antioxidant
0.3 to 2 portions of water removing agent
1-10 parts of a solvent;
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
70 to 90 portions of polyoxypropylene diol
5 to 15 portions of diisocyanate
4 to 13 portions of silane
0.001 to 0.005 portion of catalyst;
the polyoxypropylene diol is of a bifunctional degree, wherein the unsaturation degree of the polyoxypropylene diol is 0.001-0.04 meq/g, and the molecular weight is 8000-20000;
the silane is silane containing active hydrogen;
the silane containing active hydrogen is mercaptosilane or secondary aminosilane;
the adhesion promoter is prepared from vinyl trimethoxy silane, gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and N- (2-aminoethyl) -3-aminopropyl trimethoxy silane in a mass ratio of 6: 1.8: 6.
2. The non-bubbling road crack pouring adhesive constructed in a high-temperature and high-humidity environment according to claim 1 is characterized in that: the paint is prepared from the following components in parts by weight:
20-40 parts of silane modified polyurethane prepolymer
15 to 30 portions of plasticizer
20 to 40 portions of filler
0.2 to 1 portion of adhesion promoter
5 to 15 portions of anti-settling agent
0.1 to 0.5 portion of catalyst
0.1 to 0.3 portion of light stabilizer
0.2 to 0.4 portion of antioxidant
0.3 to 1 portion of water removing agent
4-10 parts of a solvent;
the silane modified polyurethane prepolymer is prepared from the following components in parts by weight:
75 to 85 portions of polyoxypropylene dihydric alcohol
7 to 12 portions of diisocyanate
6 to 10 portions of silane
0.001 to 0.003 portion of catalyst.
3. The non-bubbling road crack pouring adhesive constructed in a high-temperature and high-humidity environment according to claim 1 is characterized in that: the plasticizer is one or a composition of more than two of dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, dioctyl adipate, dioctyl sebacate, dioctyl azelate, triphenyl phosphate, diphenyl isooctyl phosphate or alkyl sulfonate plasticizers.
4. The non-bubbling road crack pouring adhesive constructed in a high-temperature and high-humidity environment according to claim 1 is characterized in that: the diisocyanate is one or a composition of more than two of toluene 2, 4-diisocyanate, toluene 2, 6-diisocyanate, 4-diphenylmethane diisocyanate, naphthalene 1, 5-diisocyanate, 1, 3-phenylene diisocyanate, 1, 4-phenylene diisocyanate, 2, 4-trimethyl-1, 6-hexamethylene diisocyanate, 1, 4-cyclohexane diisocyanate, phenylene diisocyanate, propylene diisocyanate, 1, 12-dodecane diisocyanate, 1, 6-hexamethylene diisocyanate or isophorone diisocyanate.
5. The non-bubbling road crack pouring adhesive constructed in a high-temperature and high-humidity environment according to claim 1 is characterized in that: the filler is one or a composition of more than two of light calcium carbonate, fatty acid or fatty acid salt modified calcium carbonate, calcined kaolin, silicon dioxide, PVC powder, talcum powder, organic montmorillonite, diatomite, titanium dioxide, hollow spheres or carbon black;
the anti-settling agent is one or a composition of more than two of polyurea derivatives, hydrogenated castor oil, polyamide or nano fumed silica;
the catalyst is one or a composition of more than two of stannous octoate, dibutyltin dilaurate, dibutyltin diacetate, triethylene diamine, bis (dimethylaminoethyl) ether, N-ethyl morpholine, dimorpholine diethyl ether or N-methylimidazole;
the light stabilizer is benzotriazole ultraviolet light absorber or hindered amine ultraviolet light stabilizer;
the antioxidant is one or a composition of more than two of Irgastab PUR68, antioxidant 1010 or Irganox 5057;
the water removing agent is one or a composition of more than two of molecular sieve, calcium oxide, adhesion promoter, p-toluenesulfonyl isocyanate, trimethyl orthoformate or oxazolidine water removing agent;
the solvent is one or a composition of more than two of toluene, xylene, aromatic oil or naphtha;
the benzotriazole ultraviolet light absorber is Tinuvin213 or UV-320;
the ultraviolet light stabilizer of the hindered amine is 4-benzoyloxy-2, 2,6, 6-tetramethyl piperidine.
6. The method for preparing the non-bubbling road joint grouting glue constructed in the high-temperature and high-humidity environment according to any one of claims 1 to 5, is characterized by comprising the following steps: it comprises the following steps:
step one, preparing a silane modified polyurethane prepolymer: adding polyoxypropylene glycol with a formula amount into a reaction kettle, heating to a certain temperature, dehydrating for a certain time under a certain vacuum degree, cooling to a certain temperature, adding diisocyanate and a catalyst with a formula amount, reacting for a certain time, adding silane with a formula amount, and reacting for a certain time to obtain the silane modified polyurethane prepolymer;
step two, preparing the road crack pouring glue: and (2) adding the silane-modified polyurethane prepolymer prepared in the step one, a filler, a plasticizer, an anti-settling agent and a solvent into a mixer according to the formula amount, then dispersing for a certain time, adding an adhesion promoter according to the formula amount, then continuing to disperse for a certain time, adding a catalyst, a water removing agent, a light stabilizer and an antioxidant according to the formula amount, continuing to disperse and degassing for a certain time, and thus obtaining the non-bubbling road crack pouring sealant constructed in the high-temperature high-humidity environment.
7. The preparation method of the non-bubbling road crack pouring sealant constructed under the high-temperature and high-humidity environment according to claim 6, is characterized by comprising the following steps of: the first step is to prepare the silane modified polyurethane prepolymer: adding polyoxypropylene glycol with the formula amount into a reaction kettle, heating to 110-120 ℃, dehydrating for 30-60 min under the vacuum degree of 0.01-0.095 MPa, cooling to 55-65 ℃, adding diisocyanate and a catalyst with the formula amount, reacting for 1.5-4 h, adding silane with the formula amount, and reacting for 1.5-2.5 h to obtain the silane modified polyurethane prepolymer.
8. The preparation method of the non-bubbling road crack pouring sealant constructed under the high-temperature and high-humidity environment according to claim 6, is characterized by comprising the following steps of: step two, preparing the road crack pouring glue: adding the silane-modified polyurethane prepolymer prepared in the step one, a filler, a plasticizer, an anti-settling agent and a solvent into a mixer according to the formula amount, then dispersing for 20-40 min, adding an adhesion promoter according to the formula amount, then continuing to disperse for 3-8 min, adding a catalyst, a water removing agent, a light stabilizer and an antioxidant according to the formula amount, continuing to disperse and degas for 7-15 min, and thus obtaining the non-bubbling road crack pouring sealant constructed under the high-temperature and high-humidity environment;
the mixer is a double-planet mixer or a kneader with a high-speed dispersion disc;
when the mixer is a double-planet mixer with a high-speed dispersion disc, and the vacuum degree is controlled to be 0.01MPa to 0.095MPa during dispersion;
when the mixer is a kneader and is dispersed, the temperature of the kneader is controlled to be 40-60 ℃.
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| CN110294926A (en) * | 2019-06-28 | 2019-10-01 | 江苏中路工程技术研究院有限公司 | A kind of silicane-modified polyurethane material and its preparation method and application method |
| CN110577815A (en) * | 2019-10-16 | 2019-12-17 | 衡水大禹工程橡塑科技开发有限公司 | moisture-resistant single-component polyurethane sealant |
| CN112159511B (en) * | 2020-09-15 | 2022-09-06 | 山东省交通科学研究院 | Polyether polyurethane grouting material and method for treating grout pumping diseases of asphalt pavement |
| CN112143450A (en) * | 2020-09-30 | 2020-12-29 | 山东福瑞斯新材料科技有限公司 | Silane modified polyether cold crack pouring adhesive for roads and preparation method thereof |
| US20230265349A1 (en) * | 2022-02-18 | 2023-08-24 | General Electric Technology Gmbh | Soluble water scavenger molecules for use with dielectric fluids |
| CN114989763A (en) * | 2022-06-16 | 2022-09-02 | 江苏承固新材料科技有限公司 | Environment-friendly asphalt modified silane polymer sealant and preparation method thereof |
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| CN106947426A (en) * | 2017-03-28 | 2017-07-14 | 常州大学 | A kind of preparation method of weather resistant fluid sealant for building |
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