CN103131162B - Specially-used enhanced polyurethane sealing water-stopping material and production method thereof - Google Patents
Specially-used enhanced polyurethane sealing water-stopping material and production method thereof Download PDFInfo
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- CN103131162B CN103131162B CN201110374770.9A CN201110374770A CN103131162B CN 103131162 B CN103131162 B CN 103131162B CN 201110374770 A CN201110374770 A CN 201110374770A CN 103131162 B CN103131162 B CN 103131162B
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Abstract
Dam-special enhanced polyurethane sealing water-stopping material and production method thereof. The dam-special enhanced polyurethane sealing water-stopping material is composed of two materials of A and B, and is stirred and embedded on site when in use till product molding; the A component material is obtained by performing heating dehydration of polyether polyol to form anhydrous polyether polyol, adding MDI, adding a flexibilizer in a maintained constant temperature state, and then cooling; the B component material is obtained by mixing a liquid filler, a powdery filler, and a flexibilizer, adding a chain extender, heating and stirring to obtain the dehydrated mixture, adding an antiager and other additives, and grinding. The material of the invention is obtained by cold working at normal temperature; the operation is simple; the construction is rapid; the material of the invention has excellent binding power, good caking property with concrete, high plasticity, and excellent resilience; the material of the invention has excellent low temperature flexibility, high temperature stability, mechanical properties and endurance performance, and is suitable for sealing water stopping of concrete-faced rockfill dam expansion joints, or sealing water stopping of other high-grade hydraulic structures.
Description
Technical field
The present invention relates to the composition of International Classification of Patents C08L macromolecular compound or the special enhancement type urethane of technical field, especially dam hermetic seal material and the production method thereof of C09D coating composition, filling paste or C09J adhesive application.
background technology
It is open that the use of face polyurethane sealant in face dam at present finds no people, such as medium-sized polyurethane sealant water stop sealing material etc., the variation of the water-proof material that the continuous renewal of waterproof technique is also accelerated, prevents that the material of rainwater, underground water, industry and the civilian intrusion buildings such as plumbing, corrosive liquid and airborne moisture, steam is all referred to as water-proof material substantially on the whole.
According to national standard JC/T482-2003, conventional polyurethanes seal gum density 1.4 ± 0.1g/cm
3surface drying time≤24h, working life>=2h, tensile propcrties, the maximum tensile strength>=0.2MPa, maximum unit elongation>=200%, surely stretches and surely stretches cohesiveness after cementability, cold drawn-hot pressing and-30 ℃ of low temperature flexibilities after cohesiveness, immersion all without destruction, mass loss rate≤5%, elastic restoration ratio>=70%.
The Patent Application Publication of finding relevant urethane sealing material aspect discloses less, as: the environment-friendly type organosilicon modified polyurethane adhesive/seal gum of number of patent application 201010593673 relates to a kind of tackiness agent.In sealing glue, contain base-material, filler, softening agent, catalyzer, wherein said softening agent is the polyphosphazene polymer ethoxylated polyhydric alcohol of molecular weight more than 600.
And for example number of patent application 200910069385 special high-performance spray polyurethane elastic waterproof anti-corrosive paints and preparation method thereof, it is to adopt the production technique of KT-PUP110 special high-performance spray polyurethane elastic waterproof anti-corrosive paint to produce by A, two kinds of components of B to synthesize.
The and for example MDI prepolymer of number of patent application 01812537 liquid stabilising and the curative systems of liquid stabilising, it is suitable for room temperature casting, and under self-vulcanizing state, provides high-performance low contraction polyurethane elastomer.
But as described in aforementioned, composite class low-temperature demulsifying agent still can not meet real world applications requirement.
In face dam, between plate, expansion joint water-tight is most important, this is directly connected to the safety of dam body, therefore to having relatively high expectations of waterproof sealing material, between the panel of development adaptation severe cold area, expansion joint sealing material is significant, the main GB filler of sealing material for expansion joint in face dam at present, this kind of material applied more than 20 years at home, and its price is higher, but property
Energy index is lower, not yet openly the higher face dam expansion joint sealing material of cost performance.
summary of the invention
The object of the invention is to propose a kind of urethane hermetic seal material and production method thereof that is exclusively used in dam class water construction facility.
Goal of the invention of the present invention realizes by following technical measures: be made up of A and B bi-material, Site pointing is to formed product in use; Wherein, form anhydrous polyether glycol by polyether glycol through the dehydration that heats up, then add MDI, then through adding toughner under constant temperature maintaining condition, after cooling, generate A constituent materials; Mixed the mixture that adds the dehydration of chainextender heated and stirred by liquid filler, fleut and toughner, then add antiager and other auxiliary agents, after grinding, generate B constituent materials;
The invention has the beneficial effects as follows: cold-working industry under normal temperature, easy and simple to handle, construction is fast; There is excellent cohesive force, good with concrete binding, there is high-ductility, rebound resilience is good; There is excellent low temperature flexibility, high-temperature stability, mechanical property and endurance quality.Be suitable for the hermetic seal of face dam expansion joint hermetic seal or other high-grade hydraulic structures.
Accompanying drawing explanation
Fig. 1 is the technological process of production of the present invention;
Embodiment
The present invention is made up of A and B bi-material, and Site pointing is to formed product in use;
Wherein, form anhydrous polyether glycol by polyether glycol through the dehydration that heats up, then add MDI, then through adding toughner under constant temperature maintaining condition, after cooling, generate A constituent materials;
Mixed the mixture that adds the dehydration of chainextender heated and stirred by liquid filler, fleut and toughner, then add antiager and other auxiliary agents, after grinding, generate B constituent materials;
Below in conjunction with embodiment, further set forth the present invention.
In the present invention, with mass fraction, A component formula is polyether glycol (560S) 400-430 part, polyether glycol (DL-2000) 80-110 part, diphenylmethanediisocyanate (MDI) 70-90 part, subtracts four line oil 30-50 parts.
In the present invention, with mass fraction, B component formula is for subtracting four line oil 90-110 parts, polyether glycol (330N) 14-18 part, polyether Glycols (DL-1000) 15-25 part, urethane vulcanizing agent (MOCA) 5-10 part, Viscotrol C 15-25 part, white carbon black 25-35 part, titanium dioxide 5-15 part, silica flour and superfined flyash mixture 140-180 part, plumbic acid ester coupling agent 5-10 part, 0.3 part of UV light absorber, 0.2 part of antioxidant.
In the present invention, replace traditional TDI with MDI, easily to purchase and cheap petroleum intermediate product subtracts four line oil as toughner, take the environmental protection, the high-performance sealed sealing material that configure as filler through surperficial refinement, activity excitation, drying treatment silica flour and superfined flyash mixture.
The present invention's more environmental protection compared with common polyurethane sealant, has more excellent mechanical property, endurance quality and water conservancy project characteristic index, is more suitable for the hermetic seal of concrete for hydraulic structure dam and top-grade building thing.Lucifuge kept dry of the present invention.
According to national standard JC/T482-2003, density of material 1.4g/cm of the present invention
3surface drying time 6.67h, working life 1.45h, tensile propcrties, the maximum tensile strength 0.466MPa, maximum unit elongation 762%, surely stretch cohesiveness, immersion and surely stretch cohesiveness after cementability, cold drawn-hot pressing and-40 ℃ of low temperature flexibilities after 30d all without destruction, mass loss rate 2%, elastic restoration ratio 80%, impervious 0.8MPa keeps 24h without infiltration, with the cohesiveness 0.01MPa of ice.
Using method of the present invention:
1.. the foreign material in seam, floating ash are removed clean;
2.. concrete surface is carried out to grinding process with electric angle grinder;
3.. configure dedicated interfacial agents is also carried out primary coat brushing;
4.. (A: B=1: 3) two-pack is coordinated to rear fully stirring, by caulking machine or putty knife embedding seam in proportion;
5.. the caulk compound densification embedding is real, must not there be broken end or cavity, after filleting, should repair in time, make its smooth surface, smooth;
6.. construct complete, clean in time various apparatus.
In the present invention's transportation and storage, should note: prevent from exposing to the sun and rain, collide, be inverted; 0-30 ℃ of sealing, dry, without storing under periods of direct sunlight condition; A constituent materials validity period nine months, B constituent materials validity period 2 years.
In the present invention: MDI is 4, the general name of the modifier of 4 ' diphenylmethanediisocyanate (pure MDI), the mixture (polymeric MDI) that contains the pure MDI of certain proportion and polyphenyl polymethylene polyisocyanates and pure MDI and polymeric MDI, be to produce the most important raw material of urethane, a small amount of MDI is applied to the other side except urethane.The elasticity of the existing rubber of urethane, there are again the intensity of plastics and excellent processing characteristics, especially there is the incomparable advantage of other synthetic materials at aspects such as heat insulation, sound insulation, wear-resisting, oil resistant, elasticity, it is the sixth-largest plastics after polyethylene, polyvinyl chloride, polypropylene, polystyrene and ABS (surmounted now ABS and become the fifth-largest plastics), be widely used in the fields such as national defence, space flight, light industry, chemical industry, oil, weaving, traffic, automobile, medical treatment, become the indispensable brand-new material of Economic development and people's lives.
MDI and TDI product alternative each other are all the raw materials of producing urethane.The price of MDI is more lower slightly at present, and toxicity is lower than TDI, but density ratio TDI system is large in the time producing foam, and the mouldability of the polyurethane products that MDI forms is relatively better.
In the present invention: MDI (tolylene diisocyanate) is the one of conventional polyisocyanates, and polyisocyanates is urethane (PU) material and important foundation raw material.
In the present invention: polyether glycol 330N is take a kind of glycerine as initiator, propylene oxide, oxyethane are polymerization single polymerization monomer, contain higher primary hydroxyl active ingredient, ethylene oxide-capped, and molecular weight reaches 4800 general polyether glycol.330N polyether glycol is desirable high reactivity molding polyether glycol, can be used as the raw material of polymer polyatomic alcohol (graft polyether), be used in conjunction with the moulded foam that can make excellent performance with graft polyether, be applicable to various high-low pressure foaming machines, TYHR-330N is equivalent to the V-4701 of U.S. pottery scholar chemistry.TYHR-330N is mainly used in molding foaming foam, as car mat, vehicle internal decoration seat armrest, bearing circle, panel board, headrest, bumper material etc.
In the present invention: MOCA (urethane vulcanizing agent): 3,3 '-bis-chloro-4,4 '-diaminodiphenyl-methanes or two adjacent chlorodiphenyl amine methane, be dissolved in the organic solvents such as ethanol, acetone, chlorobenzene, toluene, butanone, water insoluble; The linking agent that is used as vulcanizing agent, polyurethane coating and the tackiness agent of pouring polyurethane rubber, also can be used for cured epoxy resin.
In the present invention: polyether glycol GEP-560S is that a kind of multi-metal cyanide complex (MMC) that adopts is prepared from for catalyzer, the polyether glycol GEP-560S that itself and traditional KOH catalysis are made has done frothing test contrast and has found, foam performance and the foaming properties of the polyurethane flexible foam making with the polyether glycol of two kinds of methods productions are all very approaching.
In the present invention: subtracting four line oil is the one in readymade oil.Readymade oil refers to the oil of crude oil vacuum still output, is mainly divided into a line to four lines according to the difference of boiling point, and boiling point is more and more higher.Wherein, subtracting four line oil is basic materials of producing lubricating oil.
In the present invention: polyether glycol [be the oligopolymer of terminal hydroxy group, the hydroxyl on main chain is connected by ehter bond, be take low molecular weight polyols, polyamine or containing the compound of reactive hydrogen as initiator ,-form with olefin oxide ring-opening polymerization under catalyst action.
In the present invention: stopping composition is selected, to subtract four line oil as liquid filler; Powdery stopping composition take the mixture of silica flour and superfined flyash as product, and this mixture is carried out to a series of processing such as fineness adjustment, surface modification, high temperature drying, its related index is strictly controlled, made it meet the requirement of product performance and suitability for industrialized production completely.
In the present invention: chainextender is selected with polyvalent alcohol and the compound crosslinking and curing agent as product of polyamine.The further crosslinking curing of A component performed polymer, both satisfiability energy requirement, meanwhile, liquid polyhydric alcohols solidifying agent also can be used as a part for stopping composition carrier, B component is not being participated under the condition of any solvent, reach desired certain degree of mobilization when producing and constructing.
In the present invention: selecting liquid filler material to subtract four line oil is toughner.
In the present invention: in antiager and other auxiliary agents, use adjustable solidification agent, adjustable solidification agent mainly comprises catalyzer and retardant, be mainly the curing time of drying of adjusting material, be beneficial to product and construct under differing temps.
The present invention uses specific examples to comprise:
Advantage of the present invention is more, and under normal temperature, cold-working industry, easy and simple to handle, and construction fast; There is excellent cohesive force, good with concrete binding, there is high-ductility, rebound resilience is good; There is excellent low temperature flexibility, high-temperature stability, mechanical property and endurance quality.Be applicable to the hermetic seal at face dam expansion joint or the hermetic seal of other high-grade hydraulic structures.
Claims (1)
1. the production method of the special enhancement type urethane of dam hermetic seal material, is characterized in that: be made up of A and B bi-material, Site pointing is to formed product in use; Wherein, form anhydrous polyether glycol by polyether glycol through the dehydration that heats up, then add MDI, then through adding toughner under constant temperature maintaining condition, after cooling, generate A constituent materials; Mixed the mixture that adds the dehydration of chainextender heated and stirred by liquid filler, fleut and toughner, then add antiager and other auxiliary agents, after grinding, generate B constituent materials;
With mass fraction, A component formula is polyether glycol 560S 400-430 part, polyether glycol DL-2000 80-110 part, and diphenylmethanediisocyanate MDI 70-90 part, subtracts four line oil 30-50 parts;
With mass fraction, B component formula is for subtracting four line oil 90-110 parts, polyether glycol 330N 14-18 part, polyether Glycols DL-1000 15-25 part, urethane vulcanizing agent MOCA 5-10 part, Viscotrol C 15-25 part, white carbon black 25-35 part, titanium dioxide 5-15 part, silica flour and superfined flyash mixture 140-180 part, plumbic acid ester coupling agent 5-10 part, 0.3 part of UV light absorber, 0.2 part of antioxidant.
2
.the production method of the special enhancement type urethane of dam as claimed in claim 1 hermetic seal material, is characterized in that density of material 1.4g/cm
3surface drying time 6.67h, working life 1.45h, tensile propcrties, the maximum tensile strength 0.466MPa, maximum unit elongation 762%, surely stretch cohesiveness, immersion and surely stretch cohesiveness after cementability, cold drawn-hot pressing and-40 ℃ of low temperature flexibilities after 30d all without destruction, mass loss rate 2%, elastic restoration ratio 80%, impervious 0.8MPa keeps 24h without infiltration, with the cohesiveness 0.01MPa of ice.
3
.the production method of the special enhancement type urethane of dam as claimed in claim 1 or 2 hermetic seal material, is characterized in that using method:
1.. the foreign material in seam, floating ash are removed clean;
2.. concrete surface is carried out to grinding process with electric angle grinder;
3.. configure dedicated interfacial agents is also carried out primary coat brushing;
4.. A in proportion: B=1: two-pack is coordinated rear fully stirring by 3, by caulking machine or putty knife embedding seam;
5.. the caulk compound densification embedding is real, must not there be broken end or cavity, after filleting, should repair in time, make its smooth surface, smooth;
6.. construct complete, clean in time various apparatus.
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| CN103666371A (en) * | 2013-12-24 | 2014-03-26 | 中铁十九局集团第三工程有限公司 | Method for preparing blocking agent for filling deformation joints of high-speed railway concrete structure |
| CN107286834B (en) * | 2016-04-01 | 2019-09-24 | 新疆科能新材料技术股份有限公司 | Large arch dam environment protection type single-component carbamide paint and preparation method thereof |
| CN107286894B (en) * | 2016-04-01 | 2020-04-17 | 新疆科能防水防护技术股份有限公司 | Low-modulus single-component polyurethane sealant for hydraulic engineering and production method thereof |
| CN107286835B (en) * | 2016-04-01 | 2019-10-29 | 新疆科能防水防护技术股份有限公司 | A kind of monocomponent high elastic silylated polyurethane water-repellent paint and its production method |
| CN107345406B (en) * | 2017-08-14 | 2019-12-13 | 洛阳双瑞特种装备有限公司 | waterproof sealing method for deformation joint of pipe gallery |
| CN114163800A (en) * | 2021-11-16 | 2022-03-11 | 四川童燊防水工程有限公司 | TS-136 creep elastic grouting material and preparation process thereof |
| CN115961544B (en) * | 2023-01-16 | 2023-08-18 | 黑龙江鑫交研桥梁科技开发有限公司 | Elastomer and assembled telescopic device suitable for middle-small span bridge |
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| CN1226349C (en) * | 2003-05-20 | 2005-11-09 | 天津新技术产业园区北洋新技术工程有限公司 | Expanding liquid rubber |
| CN101538356B (en) * | 2009-04-21 | 2011-06-29 | 上海世鹏聚氨酯科技发展有限公司 | Nano waste fly ash reinforced polyurethane polyurea elastic material as well as preparation method and application thereof |
| CN101864165A (en) * | 2010-05-05 | 2010-10-20 | 陕西浩瀚新宇科技发展有限公司 | Organic-silicon-modified polyurethane sealant and processing technology thereof |
| CN102234499A (en) * | 2010-05-07 | 2011-11-09 | 王文立 | Self-heal waterproof sealant and production method thereof |
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Address after: 830000 the Xinjiang Uygur Autonomous Region Urumqi development zone two phase Jinyang satellite phase two 45-1-403 Patentee after: Xinjiang Keneng Waterproof and Protection Technology Co., Ltd. Address before: 830000 the Xinjiang Uygur Autonomous Region Urumqi development zone two phase Jinyang satellite phase two 45-1-403 Patentee before: Xinjiang Keneng Waterproof Protection Material Co., Ltd. |
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Address after: No.69 Yinxing street, Urumqi Economic and Technological Development Zone (Toutunhe District), 830000 Xinjiang Uygur Autonomous Region Patentee after: Xinjiang Keneng New Material Technology Co.,Ltd. Address before: 830000 Jinyang satellite phase II 45-1-403, Urumqi Development Zone Phase II, Xinjiang Uygur Autonomous Region Patentee before: XINJIANG KENENG WATERPROOF PROTECTION TECHNOLOGY CO.,LTD. |
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