CN102898813A - Hydraulic cavitation-resistant material and preparation method thereof - Google Patents
Hydraulic cavitation-resistant material and preparation method thereof Download PDFInfo
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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
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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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
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Abstract
The invention discloses a hydraulic cavitation-resistant material, which consists of a component A and a component B, wherein the component A at least comprises polyaspartic ester, the component B comprises a curing agent, and the material comprises 100 weight parts of polyaspartic ester and 30 to 180 weight parts of curing agent. The protective material has excellent mechanical property and ultra strong weather resistance and ageing resistance. The invention also discloses a preparation method for the hydraulic cavitation-resistant material.
Description
Technical field
The present invention relates to the anti-cavitation erosion material of a kind of water conservancy project, the invention still further relates to the anti-cavitation erosion material preparation of this water conservancy project method.
Background technology
The erosive wear of hydraulic outlet works and cavitation erosion are the medium-term and long-term major issues of paying close attention to, remaining to be properly settled of water resources and hydropower construction always.In order to prevent that hydraulic outlet works from affecting dam work-ing life because of cavitation erosion; must carry out correct design to engineering; ensure outstanding construction quality, also need hydraulic outlet works is carried out special protection (pasting with the special protection layer at privileged sites) and meticulous Inspection and maintenance (find that surface go wrong on-call maintenance reinforce).More than 80,000 dam had altogether at present in China, is the maximum country of dam in the world, and large-scale dam accounts for 45% of whole world sum.The Yalongjiang River of State Council approved is built the silk screen Huge Power Station in addition, the Xi Luodu in Jinsha jiang River, to family's dam engineering, and the Xiaowan Project in the Lancang River, the Pubugou Project in Dadu River is also all in building nervously.There has been and certainly existed in the future now the cavitation erosion problem of hydraulic outlet works in these Hydraulic and Hydro-Power Engineerings, As time goes on, its will inevitably have influence on the Hydraulic and Hydro-Power Engineering function normally, efficiently the performance, this not only can produce greatly impact to flood control safety, water conservancy shipping, the electric power energy of country, more may bring immeasurable loss to national economy, the cavitation erosion research that therefore solves hydraulic outlet works is the task of top priority.
Through a large amount of investigation and analysis, design, scientific research, construction, fortune pipe and the building materials unit of domestic and international water conservancy and hydropower department just began one's study and adopted special material and technique to improve the anti-impact mill of hydraulic outlet works, anti-cavitation corrosion ability the seventies in last century, to avoid or to reduce its hazard rating.Owing to the macromolecular material superior performance, easily construct, be convenient to the secondary reparation, therefore as the first-selection of the anti-cavitation erosion protecting materials of hydraulic outlet works.Because the destruction that hydraulic outlet works is constantly cavitated for a long time, so protecting materials should have excellent mechanical property and superpower weathering resistance and ageing resistance, so the research and development of material are relatively difficult.
Summary of the invention
The first purpose of the present invention is to provide a kind of and has excellent mechanical property and superpower weathering resistance and the anti-cavitation erosion material of water conservancy project of ageing resistance, thereby can protect for a long time hydraulic outlet works to exempt from cavitation erosion.
The second purpose of the present invention is to provide the anti-cavitation erosion material preparation of this water conservancy project method.
For achieving the above object, the present invention adopts following technical scheme, the anti-cavitation erosion material of water conservancy project, it is comprised of A component and B component, it is characterized in that described A component comprises polyaspartate at least, described B component comprises solidifying agent, and the weight part content of described feed composition polyaspartate is 100 parts, and the weight part content of solidifying agent is 30-180 part.
In technique scheme, described A component also comprises inorganic nano material, organo-silicon coupling agent, reactive thinner; The weight part content of described inorganic nano material is 1～80 part, and the weight part content of described organo-silicon coupling agent is 1～15 part, and the weight part content of described reactive thinner is 1～100 part.
In technique scheme, the synthetic method of described polyaspartate comprises the steps: 1. two functional group's primary amine to be joined in the four-hole boiling flask, stirs, and passes into nitrogen; 2. slowly drip maleic acid ester, and maintain the temperature at 35 ℃; 3. dropwise, be warming up to 90～100 ℃, reaction 12h obtains polyaspartate.
In technique scheme, described two functional group's primary amine are one or more in following two functional group's primary amine: 1. low-molecular-weight two functional group's primary amine: hexanediamine, isophorone diamine, dicyclohexyl methyl hydride diamines or 3,3 '-dimethyl 4,4 '-dicyclohexyl methyl hydride diamines; 2. two functional group's polyetheramines: polypropylene glycol diamine or polyethylene glycol diamines; 3. two functional group's heterocyclic diamines: 4,7-dioxadecane-1,10-diamines, 4,9-dioxa dodecane-1,12-diamines or 4,7,10-trioxa, three decane-1,13-diamines; Described maleic acid ester is ethyl maleate, dimethyl maleate, dipropyl maleate, dibutyl maleinate, toxilic acid methyl-propyl ester.
In technique scheme, described inorganic nano material comprises nano-TiO
2, nanometer SiO
2, nano-ZnO, nanometer CaCO
3, nanometer Fe
3O
4In one or more.
In technique scheme, described solidifying agent is multiple solidifying agent with different structure, described solidifying agent is tolylene diisocyanate, n-butyl isocyanate, polymeric polyisocyanate, polyisocyanates, parachlorobenzyl isocyanic ester, Sulfuryl chloride isocyanate, tolysulfonyl isocyanic ester, methyl isocyanate, isopropyl isocyanate, diphenylmethanediisocyanate, 1, the uniform mixture at room temperature of two or more in 6-hexamethylene diisocyanate, isophorone diisocyanate or the diphenylmethanediisocyanate.
In technique scheme, described organo-silicon coupling agent is one or more among KH550, KH570, KH151, KH171, the KH792; Described reactive thinner is one or more in ethanol, ethylene glycol, propylene glycol, polyoxyethylene glycol, the polypropylene glycol.
The anti-cavitation erosion material preparation of water conservancy project method, it is characterized in that it comprises the steps: to react with different two functional group's primary amine and maleic acid ester, acquisition has the polyaspartate of different gel times, add simultaneously inorganic nano material and polyaspartate Material cladding, add again corresponding organo-silicon coupling agent and reactive thinner and improve its performance, as the A component of the anti-cavitation erosion material of water conservancy project; Multiplely has the solidifying agent of different structure as the B component of the anti-cavitation erosion material of water conservancy project by choosing; The weight part content of described material component polyaspartate is 100 parts, and the weight part content of described inorganic nano material is 0～80 part, and the weight part content of described organo-silicon coupling agent is 0～15 part, and the weight part content of described reactive thinner is 0～100 part;
The weight part content of described solidifying agent is 30-180 part.
The present invention adopts different two functional group's primary amine and maleic acid ester to react; acquisition has the polyaspartate of different gel times; react curing by choosing multiple solidifying agent and polyaspartate with different structure; add simultaneously inorganic nano material and polyaspartate Material cladding; add corresponding organo-silicon coupling agent and reactive thinner and improve its performance, reduce cost, finally obtain having the concrete surface protecting material of excellent comprehensive performance.
The invention has the beneficial effects as follows: (1) reactive thinner participates in curing reaction, has improved solid content, has reduced VOC, more is conducive to environmental protection, and the simultaneously adding of reactive thinner has reduced the viscosity of material, for construction is provided convenience; (2) utilize inorganic nano material and organic polyaspartate Material cladding, prepared a kind of novel environment friendly inorganic-organic composite material, be conducive to improve shock resistance and the weather resistance of poly aspartic acid ester material; (3) by adding organo-silicon coupling agent, as the bridge between inorganic materials and organic materials, strengthen the reactive force between matrix material and the base material, further improved the water resistance of matrix material simultaneously.
Embodiment
Describe performance of the present invention in detail below in conjunction with specific embodiment, but they do not consist of limitation of the invention, only for example.Simultaneously by illustrating that advantage of the present invention will become more clear and easily understanding.
The anti-cavitation erosion material of water conservancy project, it is comprised of A component and B component, it is characterized in that described A component comprises polyaspartate at least, and described B component comprises solidifying agent, the weight part content of described feed composition polyaspartate is 100 parts, and the weight part content of solidifying agent is 30-180 part.
Wherein, the A component also comprises inorganic nano material, organo-silicon coupling agent, reactive thinner; The weight part content of described inorganic nano material is 1～80 part, and the weight part content of described organo-silicon coupling agent is 1～15 part, and the weight part content of described reactive thinner is 1～100 part.
Wherein, the synthetic method of polyaspartate comprises the steps: 1. two functional group's primary amine to be joined in the four-hole boiling flask, stirs, and passes into nitrogen; 2. slowly drip maleic acid ester, and maintain the temperature at 35 ℃; 3. dropwise, be warming up to 90～100 ℃, reaction 12h obtains polyaspartate.
Wherein, two functional group's primary amine types of preparation polyaspartate are as follows: 1. low-molecular-weight two functional group's primary amine, as: hexanediamine, isophorone diamine, dicyclohexyl methyl hydride diamines (HMDA), 3,3 '-dimethyl 4,4 '-dicyclohexyl methyl hydride diamines etc.; 2. two functional group's polyetheramines comprise polypropylene glycol diamine or polyethylene glycol diamines, as: Jeffamine D-230, Jeffamine D-400, Jeffamine D-2000, Jeffamine D-4000, Jeffamine EDR-148, Jeffamine EDR-192, Jeffamine ED-600, Jeffamine ED-900 and Jeffamine ED-2000 etc.; 3. two functional group's heterocyclic diamines, as: 4,7-dioxadecane-1,10-diamines, 4,9-dioxa dodecane-1,12-diamines, 4,7,10-trioxa three decane-1,13-diamines etc.
Wherein, the maleic acid ester of preparation polyaspartate comprises: ethyl maleate, dimethyl maleate, dipropyl maleate, dibutyl maleinate, toxilic acid methyl-propyl ester etc.
Wherein, inorganic nano material comprises nano-TiO
2, nanometer SiO
2, nano-ZnO, nanometer CaCO
3, nanometer Fe
3O
4In one or more.
Wherein, solidifying agent is multiple solidifying agent with different structure, described solidifying agent is tolylene diisocyanate, n-butyl isocyanate, polymeric polyisocyanate, polyisocyanates, parachlorobenzyl isocyanic ester, Sulfuryl chloride isocyanate, tolysulfonyl isocyanic ester, methyl isocyanate, isopropyl isocyanate, diphenylmethanediisocyanate, 1, the uniform mixture at room temperature of two or more in 6-hexamethylene diisocyanate, isophorone diisocyanate or the diphenylmethanediisocyanate.
Wherein, organo-silicon coupling agent is that KH550, KH570, KH151, KH171, KH792(are all commercially available) in one or more; Described reactive thinner is one or more in ethanol, ethylene glycol, propylene glycol, polyoxyethylene glycol, the polypropylene glycol.
The anti-cavitation erosion material preparation of water conservancy project method, it is characterized in that it comprises the steps: to react with different two functional group's primary amine and maleic acid ester, acquisition has the polyaspartate of different gel times, add simultaneously inorganic nano material and polyaspartate Material cladding, add again corresponding organo-silicon coupling agent and reactive thinner and improve its performance, as the A component of the anti-cavitation erosion material of water conservancy project; Multiplely has the solidifying agent of different structure as the B component of the anti-cavitation erosion material of water conservancy project by choosing; The weight part content of described material component polyaspartate is 100 parts, and the weight part content of described inorganic nano material is 0～80 part, and the weight part content of described organo-silicon coupling agent is 0～15 part, and the weight part content of described reactive thinner is 0～100 part;
The weight part content of described solidifying agent is 30-180 part.
During use, A component and B component mixed getting final product, the surface drying time of material of the present invention does not wait by several hours from several minutes, solidify fully and time of reaching optimum performance about 7 days.
Embodiment 1:
The preparation of the anti-cavitation erosion material C of water conservancy project W830-A.
With 3,3 '-dimethyl 4,4 '-dicyclohexyl methyl hydride diamines joins in the four-hole boiling flask, stirs, and passes into nitrogen.Slowly drip ethyl maleate, and maintain the temperature at about 35 ℃.Dropwise, be warming up to 90～100 ℃, react about 12 h and obtain polyaspartate.
Choose solidifying agent 2,4-, 2,6-tolylene diisocyanate mixture (TDI) and diphenylmethanediisocyanate (MDI) fully mix with stirrer under the room temperature in any proportion.
Choosing reactive thinner ethylene glycol and propylene glycol fully mixes with stirrer under the room temperature by a certain percentage.
In polyaspartate, add nanometer SiO
2, organo-silicon coupling agent KH550 and reactive thinner, stir.Then add curing system and be cured reaction.
Wherein: polyaspartate 100 grams, solidifying agent 30 grams, nano material 50 grams, organo-silicon coupling agent 15 grams, reactive thinner 100 grams.
The fundamental property of concrete surface protecting material CW830-A is as follows:
Embodiment 2:
The preparation of concrete surface protecting material CW830-B.
The dicyclohexyl methyl hydride diamines is joined in the four-hole boiling flask, stir, pass into nitrogen.Slowly drip dimethyl maleate, and maintain the temperature at about 35 ℃.Dropwise, be warming up to 90～100 ℃, react about 12 h and obtain polyaspartate.
Choose solidifying agent isophorone-vulcabond (IPDI) and 1,6-hexamethylene diisocyanate (HDI) fully mixes with stirrer under the room temperature by a certain percentage.
Choosing reactive thinner ethylene glycol and polyoxyethylene glycol fully mixes with stirrer under the room temperature by a certain percentage.
In polyaspartate, add nano-TiO
2, organo-silicon coupling agent KH570 and reactive thinner, stir.Then add curing system and be cured reaction.
Wherein: polyaspartate 100 grams, solidifying agent 100 grams, nano material 80 grams, organo-silicon coupling agent 10 grams, reactive thinner 50 grams.
The fundamental property of concrete surface protecting material CW830-B is as follows:
Embodiment 3:
The preparation of concrete surface protecting material CW830-C.
Polypropylene oxide diamine Jeffamine D-230 is joined in the four-hole boiling flask, stir, pass into nitrogen.Slow dropping dipropyl maleate,, and maintain the temperature at about 35 ℃.Dropwise, be warming up to 90～100 ℃, react about 12 h and obtain polyaspartate.
Choose solidifying agent PPDI (PPDI) and xylylene diisocyanate (XDI) fully mixes with stirrer under the room temperature by a certain percentage.
Choosing reactive thinner propylene glycol and polypropylene glycol fully mixes with stirrer under the room temperature by a certain percentage.
In polyaspartate, add nanometer SiO
2, organo-silicon coupling agent KH550 and reactive thinner, stir.Then add curing system and be cured reaction.
Wherein: polyaspartate 100 grams, solidifying agent 180 grams, nano material 10 grams, organo-silicon coupling agent 5 grams, reactive thinner 10 grams.
The fundamental property of concrete surface protecting material CW830-C is as follows:
Embodiment 4
Polyaspartate 100 grams, solidifying agent 180 grams, nano material 1 gram, organo-silicon coupling agent 1 gram, reactive thinner 1 gram.Wherein, the maleic acid ester of preparation polyaspartate is dipropyl maleate.
Choosing solidifying agent n-butyl isocyanate and diphenylmethanediisocyanate fully mixes with stirrer under the room temperature in any proportion.
Choosing reactive thinner ethanol and polypropylene glycol fully mixes with stirrer under the room temperature in any proportion.
In polyaspartate, add nano-ZnO, nanometer CaCO
3, organo-silicon coupling agent KH550, KH171, KH792 and reactive thinner, stir.Then add curing system and be cured reaction.
The other the same as in Example 3
Embodiment 5
Polyaspartate 100 grams, solidifying agent 30 grams, nano material 5 grams, organo-silicon coupling agent 3 grams, reactive thinner 20 grams.Wherein, the maleic acid ester of preparation polyaspartate is dibutyl maleinate.
Choosing solidifying agent polymeric polyisocyanate, Sulfuryl chloride isocyanate and isopropyl isocyanate fully mixes with stirrer under the room temperature in any proportion.
Choosing reactive thinner ethanol and polypropylene glycol fully mixes with stirrer under the room temperature in any proportion.
In polyaspartate, add nanometer SiO
2, nanometer Fe
3O
4, organo-silicon coupling agent KH550, KH151, KH570 and reactive thinner, stir.Then add curing system and be cured reaction.
The other the same as in Example 3
Embodiment 6
Polyaspartate 100 grams, solidifying agent 90 grams, nano material 40 grams, organo-silicon coupling agent 7 grams, reactive thinner 60 grams.Wherein, the maleic acid ester of preparation polyaspartate is toxilic acid methyl-propyl ester.
Choosing solidifying agent polyisocyanates, parachlorobenzyl isocyanic ester, tolysulfonyl isocyanic ester and methyl isocyanate fully mixes with stirrer under the room temperature in any proportion.
Choosing reactive thinner ethanol and polypropylene glycol fully mixes with stirrer under the room temperature in any proportion.
In polyaspartate, add nanometer SiO
2, nano-TiO
2, nanometer CaCO
3, organo-silicon coupling agent KH550, KH792, KH171 and reactive thinner, stir.Then add curing system and be cured reaction.
The other the same as in Example 3
Embodiment 7
Polyaspartate 100 grams (A component), solidifying agent 30 grams (B component), other composition is zero.
With 4,7-dioxadecane-1, the 10-diamines joins in the four-hole boiling flask, stirs, and passes into nitrogen.Slowly drip dimethyl maleate, and maintain the temperature at about 35 ℃.Dropwise, be warming up to 90 ℃, react about 12 h and obtain polyaspartate.
Embodiment 8
Polyaspartate 100 grams (A component), solidifying agent 80 grams (B component), other composition is zero.
With 4,9-dioxa dodecane-1,12-diamines and 4,7,10-trioxa, three decane-1, the 13-diamines joins in the four-hole boiling flask, stirs, and passes into nitrogen.Slowly drip dimethyl maleate, and maintain the temperature at about 35 ℃.Dropwise, be warming up to 100 ℃, react about 12 h and obtain polyaspartate.
Claims (8)
1. the anti-cavitation erosion material of water conservancy project, it is comprised of A component and B component, it is characterized in that described A component comprises polyaspartate at least, and described B component comprises solidifying agent, the weight part content of described feed composition polyaspartate is 100 parts, and the weight part content of solidifying agent is 30-180 part.
2. the anti-cavitation erosion material of water conservancy project according to claim 1 is characterized in that described A component also comprises inorganic nano material, organo-silicon coupling agent, reactive thinner; The weight part content of described inorganic nano material is 1～80 part, and the weight part content of described organo-silicon coupling agent is 1～15 part, and the weight part content of described reactive thinner is 1～100 part.
3. the anti-cavitation erosion material of water conservancy project according to claim 1 and 2 is characterized in that the synthetic method of described polyaspartate comprises the steps: 1. two functional group's primary amine to be joined in the four-hole boiling flask, stirs, and passes into nitrogen; 2. slowly drip maleic acid ester, and maintain the temperature at 35 ℃; 3. dropwise, be warming up to 90～100 ℃, reaction 12h obtains polyaspartate.
4. the anti-cavitation erosion material of water conservancy project according to claim 3, it is characterized in that described two functional group's primary amine are one or more in following two functional group's primary amine: 1. low-molecular-weight two functional group's primary amine: hexanediamine, isophorone diamine, dicyclohexyl methyl hydride diamines or 3,3 '-dimethyl 4,4 '-dicyclohexyl methyl hydride diamines; 2. two functional group's polyetheramines: polypropylene glycol diamine or polyethylene glycol diamines; 3. two functional group's heterocyclic diamines: 4,7-dioxadecane-1,10-diamines, 4,9-dioxa dodecane-1,12-diamines or 4,7,10-trioxa, three decane-1,13-diamines; Described maleic acid ester is ethyl maleate, dimethyl maleate, dipropyl maleate, dibutyl maleinate, toxilic acid methyl-propyl ester.
5. the anti-cavitation erosion material of water conservancy project according to claim 2 is characterized in that described inorganic nano material comprises nano-TiO
2, nanometer SiO
2, nano-ZnO, nanometer CaCO
3, nanometer Fe
3O
4In one or more.
6. the anti-cavitation erosion material of water conservancy project according to claim 1, it is characterized in that described solidifying agent is multiple solidifying agent with different structure, described solidifying agent is tolylene diisocyanate, n-butyl isocyanate, polymeric polyisocyanate, polyisocyanates, parachlorobenzyl isocyanic ester, Sulfuryl chloride isocyanate, the tolysulfonyl isocyanic ester, methyl isocyanate, isopropyl isocyanate, diphenylmethanediisocyanate, 1,6-hexamethylene diisocyanate, in isophorone diisocyanate or the diphenylmethanediisocyanate two or more uniform mixture at room temperature.
7. the anti-cavitation erosion material of water conservancy project according to claim 2 is characterized in that described organo-silicon coupling agent is one or more among KH550, KH570, KH151, KH171, the KH792; Described reactive thinner is one or more in ethanol, ethylene glycol, propylene glycol, polyoxyethylene glycol, the polypropylene glycol.
8. the anti-cavitation erosion material preparation of water conservancy project method, it is characterized in that it comprises the steps: to react with different two functional group's primary amine and maleic acid ester, acquisition has the polyaspartate of different gel times, add simultaneously inorganic nano material and polyaspartate Material cladding, add again corresponding organo-silicon coupling agent and reactive thinner and improve its performance, as the A component of the anti-cavitation erosion material of water conservancy project; Multiplely has the solidifying agent of different structure as the B component of the anti-cavitation erosion material of water conservancy project by choosing; The weight part content of described material component polyaspartate is 100 parts, and the weight part content of described inorganic nano material is 0～80 part, and the weight part content of described organo-silicon coupling agent is 0～15 part, and the weight part content of described reactive thinner is 0～100 part;
The weight part content of described solidifying agent is 30-180 part.
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| CN2012103763706A CN102898813A (en) | 2012-09-29 | 2012-09-29 | Hydraulic cavitation-resistant material and preparation method thereof |
| PCT/CN2013/083626 WO2014048264A1 (en) | 2012-09-29 | 2013-09-17 | Hydraulic cavitation-resistant material and preparation method therefor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014048264A1 (en) * | 2012-09-29 | 2014-04-03 | 长江水利委员会长江科学院 | Hydraulic cavitation-resistant material and preparation method therefor |
| CN104312398A (en) * | 2014-10-22 | 2015-01-28 | 武汉长江科创科技发展有限公司 | Polyurea-polysiloxane organic-inorganic hybridized concrete biological pollution protection material and preparation method thereof |
| CN104387114A (en) * | 2014-10-22 | 2015-03-04 | 武汉长江科创科技发展有限公司 | Water-immune nanometer polyurea hydraulic concrete repairing material and preparation method thereof |
| CN105215266A (en) * | 2015-09-21 | 2016-01-06 | 蚌埠冠宜型材科技有限公司 | A kind of casting Wooden Pattern Making method of high stability |
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| CN101812267A (en) * | 2010-05-24 | 2010-08-25 | 唐山市思远涂料有限公司 | Antistatic, heat-insulating and corrosion-resistance coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102898813A (en) * | 2012-09-29 | 2013-01-30 | 长江水利委员会长江科学院 | Hydraulic cavitation-resistant material and preparation method thereof |
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| US5126170A (en) * | 1989-06-23 | 1992-06-30 | Bayer Aktiengesellschaft | Process for the production of polyurethane coatings |
| EP0816326B1 (en) * | 1996-07-02 | 2000-05-10 | Bayer Ag | Process for preparing mono- and polyspartic acid esters |
| CN101318832A (en) * | 2008-07-23 | 2008-12-10 | 长江水利委员会长江科学院 | Concrete surface protecting material and method of manufacturing the same |
| CN101817924A (en) * | 2010-03-19 | 2010-09-01 | 上海市建筑科学研究院(集团)有限公司 | Method for preparing novel polyaspartic ester and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014048264A1 (en) * | 2012-09-29 | 2014-04-03 | 长江水利委员会长江科学院 | Hydraulic cavitation-resistant material and preparation method therefor |
| CN104312398A (en) * | 2014-10-22 | 2015-01-28 | 武汉长江科创科技发展有限公司 | Polyurea-polysiloxane organic-inorganic hybridized concrete biological pollution protection material and preparation method thereof |
| CN104387114A (en) * | 2014-10-22 | 2015-03-04 | 武汉长江科创科技发展有限公司 | Water-immune nanometer polyurea hydraulic concrete repairing material and preparation method thereof |
| CN104387114B (en) * | 2014-10-22 | 2016-07-20 | 武汉长江科创科技发展有限公司 | Water immune nano polyureas concrete for hydraulic structure material for repairing and preparation method thereof |
| CN105215266A (en) * | 2015-09-21 | 2016-01-06 | 蚌埠冠宜型材科技有限公司 | A kind of casting Wooden Pattern Making method of high stability |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014048264A1 (en) | 2014-04-03 |
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