CN105542118A - Polyurethane grouting material, preparing method and application - Google Patents
Polyurethane grouting material, preparing method and application Download PDFInfo
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- CN105542118A CN105542118A CN201610024153.9A CN201610024153A CN105542118A CN 105542118 A CN105542118 A CN 105542118A CN 201610024153 A CN201610024153 A CN 201610024153A CN 105542118 A CN105542118 A CN 105542118A
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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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
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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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4829—Polyethers containing at least three hydroxy groups
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
Abstract
The invention discloses a polyurethane grouting material, a preparing method and application. The material comprises a component A and a component B, the component A is prepared from, by weight, 60-80 parts of polyether polyol, 20-40 parts of a first plasticizer, 0.1-2 parts of a catalyst and 0.5-3 parts of foam stabilizer; the component B is prepared from, by weight, 40-60 parts of isocyanate and 40-60 parts of a second plasticizer, wherein the molar ratio of an isocyanate group in isocyanate to a hydroxyl group in polyether polyol is (1.1:1)-(1.25-1). The polyurethane grouting material comprises the two components, operational time is long, a single-shot grouting pump can be used for grouting, the polyurethane grouting material can react when encountering with water to form elastic foam to resist water and stop leakage and forms elastic resin for sealing in the absence of water, the waterproof effect is improved, and the polyurethane grouting material is suitable for preventing seepage and stopping leakage of an expansion joint and/or a movable joint with the seepage quantity smaller than 20 L/(m<2>.d).
Description
Technical field
The invention belongs to waterproof and leaking stoppage technology field, be specifically related to a kind of polyurethane grouting material, preparation method and application.
Background technology
Chemical tanks slurry technology is used widely in the large field of China's water power, building, traffic and mining four.Polyurethane material is the class injection material that in current chemical grouting material, product category at most, the scope of application is the widest, consumption is maximum, can be divided into two kinds on the whole: hydrophilic (water-soluble) and hydrophobic type (oil soluble) according to material behavior.Hydrophilic polyurethane grouting material generates primarily of polyisocyanates and high molecular polyfunctionality hydrophilic polyether glycol polyreaction, with the force feed equipment such as grout pump by polyurethane grouting material penetration concrete gap or loose porous property base material time, hydrophilic polyurethane grouting material take water as solidifying agent, meet after water can disperse immediately, emulsification, generation chemical reaction produce carbonic acid gas, and then expand, consolidation, a kind of water-fast induration of final generation, but this consolidated after can shrink when not having water and cause multiple leakage; And domestic hydrophobic type injection material is mainly monocomponent polyurethane injection material, meets after water and form rigid foam, if be used in the waterproofing and leakage-stopping of expansion joint or mobile seam, can not adaptive deformation, also can form multiple leakage.
Summary of the invention
Technical problem to be solved by this invention is for above shortcomings in prior art, a kind of polyurethane grouting material, preparation method and application are provided, polyurethane grouting material disclosed by the invention is two-component polyurethane grouting material, operable time is long, single liquid grout pump can be used to carry out grouting use, easy to operate, react rapidly when meeting water and form elastic foam waterproofing and leakage-stopping, form elastic resin when not meeting water to seal, greatly improve waterproof effect.
The technical scheme that solution the technology of the present invention problem adopts is to provide a kind of polyurethane grouting material, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: 60 ~ 80 weight part polyether glycols, 20 ~ 40 weight part first softening agent, 0.1 ~ 2 part by weight of catalyst, 0.5 ~ 3 weight part suds-stabilizing agent;
The composition of raw materials preparing described B component comprises: 40 ~ 60 weight part isocyanic ester, 40 ~ 60 weight part second softening agent;
Wherein, the mol ratio of the isocyanate group in described isocyanic ester and the hydroxyl in described polyether glycol is (1.1:1) ~ (1.25:1).
By component A, B component can be in the milk according to after the mixing of aforementioned proportion Direct Uniform, grout pump pressure and the low viscosity of self can be relied on to infiltrate in all kinds of percolating water passage go, because the component A in the polyurethane grouting material in the present invention comprises catalyzer, thus make polyurethane grouting material be in the milk under water-less environment use time generate elastic resin, this elastic resin not only can waterproof but also have elasticity, there is certain deformation, greatly reduce in process of waterproof the breakage occurring that deformation causes, further enhancing waterproof ability, dimensional stability, project durability.And the polyurethane grouting material in the present invention uses under water environment, still can generate elastic foam and carry out waterproofing and leakage-stopping.
Preferably, the weight ratio of described component A and described B component is (2:1) ~ (1:2).
It is further preferred that the weight ratio of described component A and described B component is 1:1.
Preferably, described polyether glycol is one or more in polyether Glycols, polyether-tribasic alcohol.
Preferably, the molecular weight of described polyether glycol is 400 ~ 4000.
Preferably, described suds-stabilizing agent is one or more in anion surfactant, cats product, nonionogenic tenside.
Preferably, described isocyanic ester be diphenylmethanediisocyanate, many phenyl many methyl polyisocyanates, MDI ?one or more in 50, wherein, MDI ?50 be 2,4 ?diphenylmethanediisocyanate and 4,4' ?the mixture of diphenylmethanediisocyanate.
Preferably, described first softening agent is one or more in o-phthalic acid dibutyl ester, diisononyl phthalate, Di Iso Decyl Phthalate;
Described second softening agent is one or more in o-phthalic acid dibutyl ester, diisononyl phthalate, Di Iso Decyl Phthalate;
Described catalyzer is one or more in triethylamine, dodeca-tertiary amine, 14 tertiary amines, triethylene diamine, diethylenetriamine.
The present invention also provides the preparation method of above-mentioned polyurethane grouting material, comprises the following steps:
The preparation of component A: be 110 ~ 120 DEG C in temperature by polyether glycol, the first softening agent, vacuum tightness is dewater under the condition of ?0.1MPa 2 ~ 3 to be littlely less than 0.05wt% up to moisture content, be cooled to room temperature less than 40 DEG C, add suds-stabilizing agent and catalyzer, discharging;
The preparation of B component: isocyanic ester, the second softening agent are filled at 15 ~ 25 DEG C nitrogen and stir 0.2 ~ 1 hour, discharging.
The present invention also provides the application of above-mentioned polyurethane grouting material, is less than 20L/ (m for water percolating capacity
2﹒ d) expansion joint and/or the impervious leakage-stopping of mobile seam.
Polyurethane grouting material disclosed by the invention is two-component polyurethane grouting material, improved by raw material and composition, operable time is long, single liquid grout pump can be used to carry out grouting use, easy to operate, react rapidly when meeting water and form elastic foam waterproofing and leakage-stopping, form elastic resin when not meeting water to seal, greatly improve waterproof effect, the preparation method of the polyurethane grouting material in the present invention is simple, is specially adapted to water percolating capacity and is less than 20L/ (m
2﹒ d) expansion joint and/or the impervious leakage-stopping of mobile seam.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1
The present embodiment provides a kind of polyurethane grouting material, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: 65 weight part polyether glycols, 25 weight part first softening agent, 0.5 part by weight of catalyst, 1.5 weight part suds-stabilizing agents;
The composition of raw materials preparing described B component comprises: 55 weight part isocyanic ester, 45 weight part second softening agent.
Wherein, the weight ratio of described component A and described B component is 2:1; The mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol is 1.15:1; Described polyether glycol is the mixture of polyether Glycols and polyether-tribasic alcohol, and the molecular-weight average of described polyether glycol is 2000; Described isocyanic ester is diphenylmethanediisocyanate and many phenyl many methyl polyisocyanates (weight ratio is 2:1); Described first softening agent is o-phthalic acid dibutyl ester; Described second softening agent is diisononyl phthalate and Di Iso Decyl Phthalate (weight ratio is 1:4); Described catalyzer is diethylenetriamine; Described suds-stabilizing agent is anion surfactant.
By component A, B component can be in the milk according to after the mixing of aforementioned proportion Direct Uniform, grout pump pressure and the low viscosity of self can be relied on to infiltrate in all kinds of percolating water passage go, because the component A in the polyurethane grouting material in the present embodiment comprises catalyzer, the mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol thus polyurethane grouting material is in the milk when using under water-less environment generate elastic resin, this elastic resin not only can waterproof but also have elasticity, there is certain deformation, greatly reduce in process of waterproof the breakage occurring that deformation causes, further enhancing waterproof ability, dimensional stability, project durability.And the polyurethane grouting material in the present embodiment uses under water environment, still can generate elastic foam and carry out waterproofing and leakage-stopping.
The present embodiment also provides the preparation method of above-mentioned polyurethane grouting material, comprises the following steps:
The preparation of component A: be 112 DEG C in temperature by polyether glycol, the first softening agent, vacuum tightness is dewater under the condition of ?0.1MPa 2.2 to be littlely less than 0.05wt% up to moisture content, be cooled to room temperature less than 40 DEG C, add suds-stabilizing agent, catalyzer, discharging after stirring, filters inflated with nitrogen packaging;
The preparation of B component: isocyanic ester, the second softening agent are filled nitrogen at 17 DEG C and stirs 0.6 hour, filters discharging nitrogen-filled packaging.Component A, B component can be in the milk according to after the mixing of aforementioned proportion Direct Uniform, use after self-vulcanizing.
Polyurethane grouting material disclosed in the present embodiment is two-component polyurethane grouting material, improved by raw material and composition, operable time is long, single liquid grout pump can be used to carry out grouting use, easy to operate, react rapidly when meeting water and form elastic foam waterproofing and leakage-stopping, form elastic resin when not meeting water to seal, greatly improve waterproof effect, the preparation method of the polyurethane grouting material in the present embodiment is simple, is specially adapted to water percolating capacity and is less than 20L/ (m
2﹒ d) expansion joint and/or the impervious leakage-stopping of mobile seam.
Embodiment 2
The present embodiment provides a kind of polyurethane grouting material, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: 60 weight part polyether glycols, 40 weight part first softening agent, 1.8 part by weight of catalyst, 3 weight part suds-stabilizing agents;
The composition of raw materials preparing described B component comprises: 50 weight part isocyanic ester, 50 weight part second softening agent.
Wherein, the weight ratio of described component A and described B component is 1:1; The mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol is 1.1:1; Described polyether glycol is polyether-tribasic alcohol, and the molecular weight of described polyether glycol is 500; Described isocyanic ester be MDI ?50, wherein, MDI ?50 be 2,4 ?diphenylmethanediisocyanate and 4,4' ?the mixture of diphenylmethanediisocyanate; Described first softening agent is Di Iso Decyl Phthalate; Described second softening agent is Di Iso Decyl Phthalate; Described catalyzer is 14 tertiary amines; Described suds-stabilizing agent is cats product.
The present embodiment also provides the preparation method of above-mentioned polyurethane grouting material, comprises the following steps:
The preparation of component A: be 118 DEG C in temperature by polyether glycol, the first softening agent, vacuum tightness is dewater under the condition of ?0.1MPa 2.8 to be littlely less than 0.05wt% up to moisture content, be cooled to room temperature less than 40 DEG C, add suds-stabilizing agent, catalyzer, discharging after stirring, filters inflated with nitrogen packaging;
The preparation of B component: isocyanic ester, the second softening agent are filled nitrogen at 22 DEG C and stirs 0.8 hour, filters discharging nitrogen-filled packaging.Component A, B component can be in the milk according to after the mixing of aforementioned proportion Direct Uniform, use after self-vulcanizing.
Embodiment 3
The present embodiment provides a kind of polyurethane grouting material, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: 80 weight part polyether glycols, 20 weight part first softening agent, 1.5 part by weight of catalyst, 0.5 weight part suds-stabilizing agent;
The composition of raw materials preparing described B component comprises: 40 weight part isocyanic ester, 60 weight part second softening agent.
Wherein, the weight ratio of described component A and described B component is 1:2; The mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol is 1.25:1; Described polyether glycol is polyether Glycols, and the molecular weight of described polyether glycol is 350; Described polyphenyl polyisocyanate (PM ?200); Described first softening agent is o-phthalic acid dibutyl ester; Described second softening agent is o-phthalic acid dibutyl ester; Described catalyzer is dodeca-tertiary amine; Described suds-stabilizing agent is nonionogenic tenside.
The present embodiment also provides the preparation method of above-mentioned polyurethane grouting material, comprises the following steps:
The preparation of component A: be 116 DEG C in temperature by polyether glycol, the first softening agent, vacuum tightness is dewater under the condition of ?0.1MPa 2.6 to be littlely less than 0.05wt% up to moisture content, be cooled to room temperature less than 40 DEG C, add suds-stabilizing agent, catalyzer, discharging after stirring, filters inflated with nitrogen packaging;
The preparation of B component: isocyanic ester, the second softening agent are filled nitrogen at 23 DEG C and stirs 0.7 hour, filters discharging nitrogen-filled packaging.Component A, B component can be in the milk according to after the mixing of aforementioned proportion Direct Uniform, use after self-vulcanizing.
Embodiment 4
The present embodiment provides a kind of polyurethane grouting material, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: the polyether glycol DG of 20 weight parts ?2000,55 weight parts polyether glycol MN ?the first plasticizer phthalic acid two fat in the ninth of the ten Heavenly Stems, catalyzer 14 tertiary amine of 0.3 weight part, the suds-stabilizing agent nonionogenic tenside of 1 weight part of 500,23.7 weight parts;
The composition of raw materials preparing described B component comprises: the isocyanic ester MDI of 48 weight parts ?the second plasticizer phthalic acid two fat in the ninth of the ten Heavenly Stems of 50,52 weight parts.
Wherein, the weight ratio of described component A and described B component is 1:1; The mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol is 1.16:1.
By component A, B component can be in the milk according to after the mixing of aforementioned proportion Direct Uniform, grout pump pressure and the low viscosity of self can be relied on to infiltrate in all kinds of percolating water passage go, because the component A in the polyurethane grouting material in the present embodiment comprises catalyzer, the mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol thus polyurethane grouting material is in the milk when using under water-less environment generate elastic resin, this elastic resin not only can waterproof but also have elasticity, there is certain deformation, greatly reduce in process of waterproof the breakage occurring that deformation causes, further enhancing waterproof ability, dimensional stability, project durability.And the polyurethane grouting material in the present embodiment uses under water environment, still can generate elastic foam and carry out waterproofing and leakage-stopping.
The present embodiment also provides the preparation method of above-mentioned polyurethane grouting material, comprises the following steps:
(1) in interlayer reactor, by formula ratio first add 20 weight parts polyether glycol DG ?2000,55 weight parts polyether glycol MN ?phthalic acid two fat in the ninth of the ten Heavenly Stems of 500 parts and 23.7 weight parts, it is 110 ~ 120 DEG C in temperature, vacuum tightness Wei ?0.1MPa condition under dehydration 2 ~ 3 hours, be cooled to less than 40 DEG C, add 14 tertiary amines of 0.3 weight part and the suds-stabilizing agent of 1 weight part, discharging after stirring, nitrogen-filled seal is packed.Open packaging during use directly to use.
(2) in interlayer reactor, by formula ratio first add 48 weight parts MDI ?phthalic acid two fat in the ninth of the ten Heavenly Stems of 50 and 52 weight parts, fill nitrogen stirring at room temperature half an hour, discharging, nitrogen-filled seal is packed.
Polyurethane grouting material disclosed in the present embodiment is two-component polyurethane grouting material, improved by raw material and composition, operable time is long, single liquid grout pump can be used to carry out grouting use, easy to operate, react rapidly when meeting water and form elastic foam waterproofing and leakage-stopping, form elastic resin when not meeting water to seal, greatly improve waterproof effect, the preparation method of the polyurethane grouting material in the present embodiment is simple, is specially adapted to water percolating capacity and is less than 20L/ (m
2﹒ d) expansion joint and/or the impervious leakage-stopping of mobile seam.
Embodiment 5
The present embodiment provides a kind of polyurethane grouting material, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: the polyether glycol N330 of 10 weight parts, the polyether glycol DL of 60 weight parts ?400 parts, the first plasticizer phthalic acid dibutyl ester of 27 weight parts, the catalyst of triethylamine of 1 weight part, the suds-stabilizing agent cats product of 2 weight parts.
The composition of raw materials preparing described B component comprises: the polymethylene multi-phenenyl isocyanate of 56 weight parts, the second plasticizer phthalic acid dibutyl ester of 44 weight parts.
Wherein, the weight ratio of described component A and described B component is 1:1.5; The mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol is 1.1:1.
The present embodiment also provides the preparation method of above-mentioned polyurethane grouting material, comprises the following steps:
(1) in interlayer reactor, by formula ratio first add the polyether glycol N330 of 10 weight parts, 60 weight parts polyether glycol DL ?the o-phthalic acid dibutyl ester of 400 parts and 27 weight parts, it is 110 ~ 120 DEG C in temperature, vacuum tightness Wei ?0.1MPa condition under dehydration 2 ~ 3 hours, be cooled to less than 40 DEG C, add the triethylamine of 1 weight part and the suds-stabilizing agent of 2 weight parts, discharging after stirring, nitrogen-filled seal is packed.Open packaging during use directly to use.
(2) in interlayer reactor, first add the polymethylene multi-phenenyl isocyanate of 56 weight parts and the o-phthalic acid dibutyl ester of 44 weight parts by formula ratio, fill nitrogen stirring at room temperature half an hour, discharging, nitrogen-filled seal is packed.
Embodiment 6
The present embodiment provides a kind of polyurethane grouting material, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: the polyether glycol MN of 40 weight parts ?700,20 weight parts polyether glycol DL ?400 parts, the first plasticizer phthalic acid dibutylester fat of 35 weight parts, the catalyst of triethylamine of 1 weight part, the suds-stabilizing agent anion surfactant of 2 weight parts.
The composition of raw materials preparing described B component comprises: the polymethylene multi-phenenyl isocyanate of 42 weight parts, the second plasticizer phthalic acid dibutylester of 58 weight parts.
Wherein, the weight ratio of described component A and described B component is 1:1; The mol ratio of the hydroxyl in the isocyanate group in described isocyanic ester and described polyether glycol is 1.14:1.
The present embodiment also provides the preparation method of above-mentioned polyurethane grouting material, comprises the following steps:
(1) in interlayer reactor, by formula ratio first add 40 weight parts polyether glycol MN ?700,20 weight parts polyether glycol DL ?the dibutyl phthalate fat of 400 parts and 35 weight parts, it is 110 ~ 120 DEG C in temperature, vacuum tightness Wei ?0.1MPa condition under dehydration 2 ~ 3 hours, be cooled to less than 40 DEG C, add the triethylamine of 1 weight part and the suds-stabilizing agent of 2 weight parts, discharging after stirring, nitrogen-filled seal is packed.Open packaging during use directly to use.
(2) in interlayer reactor, first add the polymethylene multi-phenenyl isocyanate of 42 weight parts and the dibutyl phthalate (DBP) of 58 weight parts by formula ratio, fill nitrogen stirring at room temperature half an hour, discharging, nitrogen-filled seal is packed.
Detect the polyurethane grouting material in above-described embodiment 4 ~ 6 respectively, the key technical indexes is as shown in table 1 below:
The key technical indexes of the polyurethane grouting material in table 1 embodiment 4 ~ 6
Can be seen by above-mentioned data, without any solvent, Environmental Safety in the elastic polyurethane injection material in embodiment 4 ~ 6, available single liquid grout pump construction.Polyurethane grouting material is not met after water forms elastomerics, chance water and is formed elastic foam injection material, is specially adapted to water percolating capacity and is less than 20L/ (m
2.d) impervious leakage-stopping of expansion joint and/or mobile seam.
[1] operable time: according to product regulation precise component A and B component, after component A and B component are stirred, the test method adopting rotational viscosimeter to specify by GB/T2794 carries out viscosity measurement, timing from component A and B component mixing, the time that component A and B component viscosity of mixed liquid reach 10Pa.s is operable time.
Embodiment 7
The present embodiment provides the application of the polyurethane grouting material in embodiment 1 ~ 6, is less than 20L/ (m for water percolating capacity
2﹒ d) expansion joint and/or the impervious leakage-stopping of mobile seam.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (9)
1. a polyurethane grouting material, is characterized in that, comprising: component A, B component,
The composition of raw materials preparing described component A comprises: 60 ~ 80 weight part polyether glycols, 20 ~ 40 weight part first softening agent, 0.1 ~ 2 part by weight of catalyst, 0.5 ~ 3 weight part suds-stabilizing agent;
The composition of raw materials preparing described B component comprises: 40 ~ 60 weight part isocyanic ester, 40 ~ 60 weight part second softening agent;
Wherein, the mol ratio of the isocyanate group in described isocyanic ester and the hydroxyl in described polyether glycol is (1.1:1) ~ (1.25:1).
2. polyurethane grouting material according to claim 1, is characterized in that, the weight ratio of described component A and described B component is (2:1) ~ (1:2).
3. polyurethane grouting material according to claim 1, is characterized in that, described polyether glycol is one or more in polyether Glycols, polyether-tribasic alcohol.
4. polyurethane grouting material according to claim 1, is characterized in that, the molecular weight of described polyether glycol is 400 ~ 4000.
5. polyurethane grouting material according to claim 1, is characterized in that, described suds-stabilizing agent is one or more in anion surfactant, cats product, nonionogenic tenside.
6. polyurethane grouting material according to claim 1, it is characterized in that, described isocyanic ester be diphenylmethanediisocyanate, many phenyl many methyl polyisocyanates, MDI ?one or more in 50, wherein, MDI ?50 be 2,4 ?diphenylmethanediisocyanate and 4,4' ?the mixture of diphenylmethanediisocyanate.
7. polyurethane grouting material according to claim 1, is characterized in that, described first softening agent is one or more in o-phthalic acid dibutyl ester, diisononyl phthalate, Di Iso Decyl Phthalate;
Described second softening agent is one or more in o-phthalic acid dibutyl ester, diisononyl phthalate, Di Iso Decyl Phthalate;
Described catalyzer is one or more in triethylamine, dodeca-tertiary amine, 14 tertiary amines, triethylene diamine, diethylenetriamine.
8. a preparation method for the polyurethane grouting material in claim 1 ~ 7 any one, is characterized in that, comprise the following steps:
The preparation of component A: be 110 ~ 120 DEG C in temperature by polyether glycol, the first softening agent, vacuum tightness is dewater under the condition of ?0.1MPa 2 ~ 3 to be littlely less than 0.05wt% up to moisture content, be cooled to room temperature less than 40 DEG C, add suds-stabilizing agent and catalyzer, discharging;
The preparation of B component: isocyanic ester, the second softening agent are filled at 15 ~ 25 DEG C nitrogen and stir 0.2 ~ 1 hour, discharging.
9. an application for the polyurethane grouting material described in claim 1 ~ 7 any one, is characterized in that, is less than 20L/ (m for water percolating capacity
2﹒ d) expansion joint and/or the impervious leakage-stopping of mobile seam.
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| CN112521577A (en) * | 2020-12-28 | 2021-03-19 | 无锡琛华复合材料有限公司 | High-toughness polyurethane grouting material and preparation method thereof |
| CN112521577B (en) * | 2020-12-28 | 2022-09-13 | 无锡琛华复合材料有限公司 | High-toughness polyurethane grouting material and preparation method thereof |
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Application publication date: 20160504 |