CN107541174A - Monocomponent polyurethane building sealant - Google Patents
Monocomponent polyurethane building sealant Download PDFInfo
- Publication number
- CN107541174A CN107541174A CN201710657571.6A CN201710657571A CN107541174A CN 107541174 A CN107541174 A CN 107541174A CN 201710657571 A CN201710657571 A CN 201710657571A CN 107541174 A CN107541174 A CN 107541174A
- Authority
- CN
- China
- Prior art keywords
- building sealant
- polyurethane
- monocomponent polyurethane
- monocomponent
- sealant according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The present invention proposes a kind of monocomponent polyurethane building sealant, is calculated according to percetage by weight, including following components：Polyurethane prepolymer A and polyurethane prepolymer B totally 35~55%, silane coupler 1~3%, modified coal ash 5~10%, latent curative 0.5~0.8%, dicyclopentadiene petroleum resin 10~20%, plasticizer 10~20%, filler 10~30%, ultra-violet absorber and stabilizer 0.1~3%, the modified coal ash are mainly prepared by flyash, sodium silicate and na-montmorillonite.The fluid sealant not only improves the compatibility of polyurethane system, also improves system viscosity and levelability, good weatherability.
Description
Technical field
The invention belongs to fluid sealant technical field, and in particular to a kind of monocomponent polyurethane building sealant.
Background technology
Polyurethane sealant is the Novel glue kind occurred after acrylic sealant, silicone glass glue.It is this kind of close
Sealing can at room temperature solidify using micro-moisture in air as crosslinking accelerator and be resilient state, there is soft durometer can adjust,
The advantages that low temperature resistant, flexible and adhesion strength is big, it is a kind of adhesion type fluid sealant.The glue is to metal, timber, rubber and paint
Deng having good cementability, in addition to encapsulant is made for automobile industry, building, airport, road, bridge are but also widely used for
Etc. making waterproof material.Compared with other fluid sealants, there is the spies such as odorless, pollution-free, elasticity is good, adhesion strength is high, adjustability is good
Point.
One-component polyurethane sealant is crosslinked because terminal isocyanate group contained by its matrix resin molecule can be reacted with moisture
Solidification, therefore also referred to as wet-solidifying single-component polyurethane fluid sealant.Played a significant role in automobile, building and machinery industry.
Wet-solidifying single-component polyurethane fluid sealant is mainly used in concrete making sheet curtain wall, armored concrete and slabstone, thin in construction industry
The sealing of the construction joints such as plate, glass fibre armored concrete, service life was up to 15~20 years.In addition, mono component wet solidifying gathers
Urethane fluid sealant still installs the best adhering and sealing material of windshield, it is contemplated that whole world wet-solidifying single-component polyurethane
The dosage of fluid sealant will be increased with annual 20% speed.
But wet-solidifying single-component polyurethane fluid sealant is remained high temperature resistant is poor, anti-uv-ray is weak with non-porous basal plane
Caking property it is not strong the defects of, and generally contain such as benzene, dimethylbenzene toxic solvent in the glue, have to environment certain
Pollution, has certain harm to human body.
The content of the invention
The present invention proposes a kind of monocomponent polyurethane building sealant, and the fluid sealant not only improves the compatible of polyurethane system
Property, also improve system viscosity and levelability, good weatherability.
The technical proposal of the invention is realized in this way：
A kind of monocomponent polyurethane building sealant, is calculated according to percetage by weight, including following components：
Polyurethane prepolymer A and polyurethane prepolymer B totally 35~55%, silane coupler 1~3%, modified coal ash 5~
10%, latent curative 0.5~0.8%, dicyclopentadiene petroleum resin 10~20%, plasticizer 10~20%, filler 10~
30%, ultra-violet absorber and stabilizer 0.1~3%, the modified coal ash is mainly by flyash, sodium silicate and sodium Ji Mengtuo
Stone is prepared.
Preferably, the modified coal ash preparation method is：
Flyash, sodium silicate, na-montmorillonite are mixed, suitable quantity of water is added, grinds to obtain slurry, reheating is warming up to 80~
95 DEG C, regulation lapping liquid pH is 7~8, spray drying, is produced.
Preferably, flyash, sodium silicate, the mass ratio of na-montmorillonite are 12~16:1~3:7~10.
Preferably, the polyurethane prepolymer A is that IPDI is given birth to polyether polyols reaction
Into polyurethane prepolymer B is that hexamethylene diisocyanate and PEPA react life under dibutyltin dilaurate
Into.
Preferably, the silane coupler is KH550, KH560 or KH570.
Preferably, the latent curative is oxazole alkanes latent curative.
Preferably, the plasticizer chosen any one kind of them in phthalate, alkyl sulfonates, chlorinated paraffin or
Several combinations.
Preferably, the filler is active calcium oxide, silicon powder, carbon black, talcum powder, titanium dioxide or kaolin.
The preparation method of monocomponent polyurethane building sealant of the present invention：
Polyurethane prepolymer A, polyurethane prepolymer B, silane coupler and modified coal ash are stirred and heated up, temperature control
System opens vacuum pumping negative pressure, Stress control is below -0.08MPa at 100 DEG C~120 DEG C；Then less than 70 DEG C are cooled to,
It is passed through drying nitrogen and releases vacuum, temperature control adds plasticizer and the dicyclopentadiene oil tree of formula ratio at 60~70 DEG C
Fat stirring reaction, reaction adds latent curative filler and ultra-violet absorber after terminating and stabilizer is well mixed, you can.
Beneficial effects of the present invention：
1st, fabulous storage stability, using the miberal powder coal ash and catalyst Jing Guo modification, do not reunite, viscosity is fitted
In, drastically increase the storage stability of system.
2nd, it is eager to do well in everything to concrete and metal-based layer adhesive force, pliability is good, weather-proof, hydrolysis.Can rapid curing (once apply
Work thickness 10mm can also be fully cured in 2h), and bubble will not be also produced in moisture substrate construction, available for various seams
Seal.
Embodiment
Embodiment 1
Modified coal ash preparation method is：
Flyash, sodium silicate, na-montmorillonite are mixed, add suitable quantity of water, grinds to obtain slurry, reheating is warming up to 80
DEG C, regulation lapping liquid pH is 7, spray drying, is produced.Flyash：Sodium silicate：The mass ratio of na-montmorillonite is 16:3:7.
Embodiment 2
Modified coal ash preparation method is：
Flyash, sodium silicate, na-montmorillonite are mixed, add suitable quantity of water, grinds to obtain slurry, reheating is warming up to 95
DEG C, regulation lapping liquid pH is 8, spray drying, is produced.Flyash, sodium silicate, the mass ratio of na-montmorillonite are 12:1:10.
Embodiment 3
A kind of monocomponent polyurethane building sealant, is calculated according to percetage by weight, including following components：
Polyurethane prepolymer A and polyurethane prepolymer B totally 45%, KH5502%, the modified coal ash 8% of embodiment 1, dislike
Oxazolidine class latent curative 0.5%, dicyclopentadiene petroleum resin 14%, alkyl sulfonates 10%, silicon powder 20% are ultraviolet
Light absorbers and stabilizer 0.5%.
Embodiment 4
A kind of monocomponent polyurethane building sealant, is calculated according to percetage by weight, including following components：
Polyurethane prepolymer A and polyurethane prepolymer B totally 35%, KH5601%, the modified coal ash 5% of embodiment 2, dislike
Oxazolidine class latent curative 0.8%, dicyclopentadiene petroleum resin 20%, chlorinated paraffin 20%, titanium dioxide 18%, ultraviolet are inhaled
Receive agent and stabilizer 0.2%.
Embodiment 5
A kind of monocomponent polyurethane building sealant, is calculated according to percetage by weight, including following components：
Polyurethane prepolymer A and polyurethane prepolymer B totally 55%, KH5603%, the modified coal ash 5% of embodiment 1, dislike
Oxazolidine class latent curative 0.5%, dicyclopentadiene petroleum resin 10%, phthalate 16%, kaolin 10% are purple
Ultraviolet absorbers and stabilizer 0.5%
Embodiment 6
A kind of monocomponent polyurethane building sealant, is calculated according to percetage by weight, including following components：
Polyurethane prepolymer A and polyurethane prepolymer B totally 50%, KH5701%, the modified coal ash 5% of embodiment 1, dislike
Oxazolidine class latent curative 0.8%, dicyclopentadiene petroleum resin 10.2%, phthalate 18%, talcum powder 12%,
Ultra-violet absorber and stabilizer 3%.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (8)
- A kind of 1. monocomponent polyurethane building sealant, it is characterised in that calculated according to percetage by weight, including following components：Polyurethane prepolymer A and polyurethane prepolymer B totally 35~55%, silane coupler 1~3%, modified coal ash 5~ 10%, latent curative 0.5~0.8%, dicyclopentadiene petroleum resin 10~20%, plasticizer 10~20%, filler 10~ 30%, ultra-violet absorber and stabilizer 0.1~3%, the modified coal ash is mainly by flyash, sodium silicate and sodium Ji Mengtuo Stone is prepared.
- 2. monocomponent polyurethane building sealant according to claim 1, it is characterised in that prepared by the modified coal ash Method is：Flyash, sodium silicate, na-montmorillonite are mixed, add suitable quantity of water, grinds to obtain slurry, reheating is warming up to 80~95 DEG C, regulation lapping liquid pH is 7~8, spray drying, is produced.
- 3. monocomponent polyurethane building sealant according to claim 2, it is characterised in that flyash, sodium silicate, sodium base The mass ratio of montmorillonite is 12~16:1~3:7~10.
- 4. monocomponent polyurethane building sealant according to claim 1, it is characterised in that the polyurethane prepolymer A It is that IPDI generates with polyether polyols reaction, polyurethane prepolymer B is the isocyanide of hexa-methylene two Acid esters and PEPA react generation under dibutyltin dilaurate.
- 5. monocomponent polyurethane building sealant according to claim 1, it is characterised in that the silane coupler is KH550, KH560 or KH570.
- 6. monocomponent polyurethane building sealant according to claim 1, it is characterised in that the latent curative is evil Oxazolidine class latent curative.
- 7. monocomponent polyurethane building sealant according to claim 1, it is characterised in that the plasticizer is selected from adjacent benzene Chosen any one kind of them in diformic ester, alkyl sulfonates, chlorinated paraffin or several combinations.
- 8. monocomponent polyurethane building sealant according to claim 1, it is characterised in that the filler is active oxidation Calcium, silicon powder, carbon black, talcum powder, titanium dioxide or kaolin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710657571.6A CN107541174A (en) | 2017-08-03 | 2017-08-03 | Monocomponent polyurethane building sealant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710657571.6A CN107541174A (en) | 2017-08-03 | 2017-08-03 | Monocomponent polyurethane building sealant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107541174A true CN107541174A (en) | 2018-01-05 |
Family
ID=60970494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710657571.6A Pending CN107541174A (en) | 2017-08-03 | 2017-08-03 | Monocomponent polyurethane building sealant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107541174A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818039A (en) * | 2010-04-01 | 2010-09-01 | 濮阳市万泉化工有限公司 | Single-component low-modulus polyurethane building sealant and preparation method 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 |
| CN104845580A (en) * | 2015-05-15 | 2015-08-19 | 饶玉明 | Single-component elastic polyurethane sealant |
| CN104861921A (en) * | 2015-05-15 | 2015-08-26 | 饶玉明 | Preparation method of one-component elastic polyurethane sealant |
-
2017
- 2017-08-03 CN CN201710657571.6A patent/CN107541174A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818039A (en) * | 2010-04-01 | 2010-09-01 | 濮阳市万泉化工有限公司 | Single-component low-modulus polyurethane building sealant and preparation method 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 |
| CN104845580A (en) * | 2015-05-15 | 2015-08-19 | 饶玉明 | Single-component elastic polyurethane sealant |
| CN104861921A (en) * | 2015-05-15 | 2015-08-26 | 饶玉明 | Preparation method of one-component elastic polyurethane sealant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107892900B (en) | Low-modulus high-resilience single-component silane modified polyether sealant and preparation method thereof | |
| CN105567148B (en) | Silane modified polyether glue and its manufacturing method for assembly concrete building sealing | |
| CN102391819B (en) | Fast cured moist-heat aging resistant double-component sealing adhesive and preparation process thereof | |
| CN107216845A (en) | A kind of environment-friendly type end siloxy group polyurethane sealant and preparation method thereof | |
| CN108531120A (en) | Low modulus one-component silane modified polyether seal glue of a kind of high resiliency and preparation method thereof | |
| CN105038681A (en) | Silane modified resin sealing gum and preparing method thereof | |
| CN103509169A (en) | Thick-film and low-foam one-component polyurethane elastomer and preparation method thereof | |
| CN103910847A (en) | Silane terminated polyurethane oligomer and its preparation method | |
| CN102304340A (en) | Double-component silane-terminated sealing adhesive and preparation method thereof | |
| CN105086914A (en) | One-component polyurethane sealing glue applicable to metal bonding and preparing method of one-component polyurethane sealing glue | |
| CN102181257A (en) | Single-component silane modified polyurethane sealant and preparation method | |
| CN103627003B (en) | A kind of fluorine silicon graftomer Graft Epoxy Resin and preparation method thereof | |
| BRPI0920079A2 (en) | alpha-silane-containing polyurethane composition with anisotropic material properties | |
| CN104861918B (en) | A kind of Short-Term High Temperature cures the one-component polyurethane sealant of not bulge | |
| CN105176439A (en) | Adhesive used adhesion promoter, and synthetic method and applications thereof | |
| CN109400870B (en) | Modified polyether resin and preparation method and application thereof | |
| CN108753198B (en) | Adhesion promoter for silicone sealant, preparation method of adhesion promoter, silicone sealant applied to ballastless track and preparation method of silicone sealant | |
| CN104232013A (en) | Silicone sealant and preparation method thereof | |
| CN104059592A (en) | Single-component silane modified polyether sealant and preparation method thereof | |
| CN105176479A (en) | High-strength silicone rubber and preparation method therefor | |
| CN1281702C (en) | Preparing process and application of wet-solidifying single-component polyurethane adhesive | |
| CN105647459A (en) | Reaction-bonding-type two-component self-leveling polyurethane seal gum and preparing method thereof | |
| JP2013534951A (en) | 2-Ethylhexyl-methyl-terephthalate as plasticizer in adhesives and sealants | |
| CN111386323B (en) | Novel system for applying a primer and bonding floor coverings | |
| CN111378413A (en) | Primer-free single-component polyurethane sealant and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180105 |