CN105295819A - One-component polyurethane construction sealant - Google Patents
One-component polyurethane construction sealant Download PDFInfo
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- CN105295819A CN105295819A CN201510725702.0A CN201510725702A CN105295819A CN 105295819 A CN105295819 A CN 105295819A CN 201510725702 A CN201510725702 A CN 201510725702A CN 105295819 A CN105295819 A CN 105295819A
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Abstract
The invention relates to the technical field of construction materials, and in particular relates to a one-component polyurethane construction sealant. The one-component polyurethane construction sealant is prepared from the following raw materials in parts by weight: 130-150 parts of polypropylene ether trihydroxy alcohol, 10-20 parts of diphenyl diisocyanate, 15-25 parts of di-isodecyl phthalate, 10-20 parts of polytetrafluoroethylene, 10-22 parts of silica fume, 15-25 parts of sodium tripolyphosphate, 15-30 parts of sodium chloride, 2-8 parts of magnesium oxide, 20-35 parts of calcium sulphoaluminate, 10-25 parts of ethyl acetate and 5-15 parts of dimethyl silicone oil. The one-component polyurethane construction sealant provided by the invention is good in heat resistance and ultraviolet aging resistance, stable in storage ability and convenient to use.
Description
Technical field
The present invention relates to building material technical field, particularly a kind of monocomponent polyurethane construction sealant.
Background technology
Polyurethane sealant is a wherein large class.It gets up along with petrochemical industry development, take urethane resin as a kind of new sealing compound of bonding component.Although its time is short, development is rapid, with the performance that it is superior, cater to the megatrend that Contemporary Architecture develops to high level, therefore become a kind of sealing material that current consumption is maximum, in Japan, its sales volume accounts for about 1/4th of whole construction sealant sales volume, and China has just just started development.Monocomponent polyurethane sealing compound is in a large number for buildings seams such as horizontal joints, this is necessary withered thick, flexible, the friction resistant of sealing compound of its a this purposes of important use, waterproof, monocomponent polyurethane class is just conforming with this requirement, pointing is simple, and moistening solidification is quite fast, does not need extended protection, thus becoming its length of a kind of material with the most use soaks little to quality influence, and this point also proper horizontal joint filleting is used.It is just because of there is this for a long time immersion water resistance therefore be swimming pool sealing material always in addition.Sealing compound consumption in glass is installed is quite extensively a lot of, and polyurethanes, because of various excellent propertys such as its elasticity, not only protects for general window, and for the large window of high structure.Do not need bottoming during construction, urethane just can securely with glass and metal bonding.Monocomponent polyurethane class is rich in elasticity, and modulus is low, because of but metal curtain wall is installed time optimal material because under metal curtain wall seam, distortion is large, generally needs the advantage giving full play to sealing compound.General sealing compound is used for cannot guaranteeing quality after metal curtain wall is installed, and urethane then can guarantee quality.In addition glass curtain wall in slope also can use.In addition, single-component polyurethane class also has many important purposes, such as facilities for transport and communication aspect.It requires quick solidifying, and elasticity is strong, draw weathering age, and polyurethanes can meet this requirement.When transportation equipment is subject to serious dynamic-load stress, it can play lower modulus.It may be used for the seam jointing material of airfield runway and highway after adding modifier modification in addition.
Polyurethane sealant is compared with other various sealing compound, has following various feature significantly: tensile strength tear strength, and the various mechanical property such as extensibility is good, and physical strength is high, thus other sealing compound of middle-high building obsolete it can use.Cohesiveness is strong especially, buildings no matter new or old concrete, on mortar, dry or damp, just can use without the need to putty bottoming, elasticity is strong; Wear resistance is good; Low-temperature performance is good; Oil-proofness is good; But thermotolerance and ultraviolet-resistant aging poor performance; Storage stability is poor; But weatherability is good; Bubble sometimes and expand; Polyurethane sealant is seen all sidedly in sclerosis rear surface slightly viscosity, and its advantage is far longer than shortcoming, occupies main flow.Polyurethane sealant is the sealing material that a kind of performance is comprehensively excellent, it can have good consistency by the crosslinked performance and it and other many material of improving further, thus number of chemical properties-correcting agent can be added, on purpose improve shortcoming in a certain respect by properties-correcting agent, or make shortcoming be reduced to inferior limit.
Summary of the invention
Technical problem to be solved by this invention is to provide monocomponent polyurethane construction sealant, its thermotolerance and ultraviolet-resistant aging performance good, Storage stablize, easy to use.
For achieving the above object, technical scheme to be solved by this invention is:
The invention provides a kind of monocomponent polyurethane construction sealant, be made up of the raw material of following weight part:
Preferably, monocomponent polyurethane construction sealant of the present invention, be made up of the raw material of following weight part:
Beneficial effect of the present invention is:
1, monocomponent polyurethane construction sealant intensity of the present invention is high, and resistance to chemical attack, weathering resistance, ageing-resistant performance are excellent.
2, monocomponent polyurethane construction sealant Storage of the present invention is good, and storage period reaches at least 12 months.
3, monocomponent polyurethane construction sealant of the present invention environmental protection, nontoxic, tasteless, pollution-free, plug and play, easy construction, moistening quick solidifying, does not need extended protection.
4, monocomponent polyurethane construction sealant water-swellable of the present invention adds its resilient seal sealing, has superpower water-repellancy, and long-term immersion is little to its quality influence.
5, monocomponent polyurethane construction sealant thermotolerance of the present invention and ultraviolet-resistant aging performance good.
6, monocomponent polyurethane construction sealant of the present invention also has good anti-freezing property, can also keep good over-all properties-20 ~-35.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited to these embodiments.
Embodiment 1
Monocomponent polyurethane construction sealant, be made up of the raw material of following weight part:
The preparation method of monocomponent polyurethane construction sealant is as follows: add polypropylene ether trivalent alcohol and diphenyl diisocyanate in a kettle., be warming up to 90 DEG C, stir 45min, add adjacent benzene two isodecyl ester again, stir 60min, then continue slowly to add tetrafluoroethylene and wollastonite powder, stir 55min, then continue to add sodium-chlor, magnesium oxide and calcium sulphoaluminate, continue to stir 45min, finally add tripoly phosphate sodium STPP, ethyl acetate and dimethyl silicone oil, be stirred to viscosity when reaching 2Pas, stop stirring, be cooled to room temperature discharging, obtain finished product, be packaged into.
Embodiment 2
Monocomponent polyurethane construction sealant, be made up of the raw material of following weight part:
The preparation method of monocomponent polyurethane construction sealant is as follows: add polypropylene ether trivalent alcohol and diphenyl diisocyanate in a kettle., be warming up to 85 DEG C, stir 45min, add adjacent benzene two isodecyl ester again, stir 65min, then continue slowly to add tetrafluoroethylene and wollastonite powder, stir 60min, then continue to add sodium-chlor, magnesium oxide and calcium sulphoaluminate, continue to stir 40min, finally add tripoly phosphate sodium STPP, ethyl acetate and dimethyl silicone oil, be stirred to viscosity when reaching 2Pas, stop stirring, be cooled to room temperature discharging, obtain finished product, be packaged into.
Embodiment 3
Monocomponent polyurethane construction sealant, be made up of the raw material of following weight part:
The preparation method of monocomponent polyurethane construction sealant is as follows: add polypropylene ether trivalent alcohol and diphenyl diisocyanate in a kettle., be warming up to 80 DEG C, stir 45min, add adjacent benzene two isodecyl ester again, stir 70min, then continue slowly to add tetrafluoroethylene and wollastonite powder, stir 65min, then continue to add sodium-chlor, magnesium oxide and calcium sulphoaluminate, continue to stir 35min, finally add tripoly phosphate sodium STPP, ethyl acetate and dimethyl silicone oil, be stirred to viscosity when reaching 2Pas, stop stirring, be cooled to room temperature discharging, obtain finished product, be packaged into.
The performance index that monocomponent polyurethane construction sealant of the present invention reaches are as follows:
| sequence number | test subject | technical indicator |
| 1 | outward appearance | without caking, without the uniform and smooth body of paste of emanating. |
| 2 | density (g/cm3) | 1.8 ± 0.1 |
| 3 | extrudability (mL/min) | >=115 |
| 4 | surface drying time (h) | ≤ 18 |
| 5 | exudative index | ≤ 2 |
| 6 | Sag (mm) | ≤2.5 |
| 7 | Low temperature flexibility (DEG C) | -40 |
| 8 | Bonding force KN/M | ≥3.5 |
| 9 | Life-span (year) | ≥45 |
| 10 | Storage period (moon) | ≥12 |
Claims (2)
1. a monocomponent polyurethane construction sealant, is characterized in that, is made up of the raw material of following weight part:
2. monocomponent polyurethane construction sealant according to claim 1, is characterized in that, is made up of the raw material of following weight part:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725702.0A CN105295819A (en) | 2015-10-30 | 2015-10-30 | One-component polyurethane construction sealant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725702.0A CN105295819A (en) | 2015-10-30 | 2015-10-30 | One-component polyurethane construction sealant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105295819A true CN105295819A (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510725702.0A Pending CN105295819A (en) | 2015-10-30 | 2015-10-30 | One-component polyurethane construction sealant |
Country Status (1)
| Country | Link |
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| CN (1) | CN105295819A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109401638A (en) * | 2018-08-31 | 2019-03-01 | 重庆交通大学 | Railway ballastless track road bed waterproof layer expansion joint sealing material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146273A (en) * | 2011-02-12 | 2011-08-10 | 东营正化环保科技有限公司 | Formaldehyde-free phenol-free adhesive and preparation method thereof |
-
2015
- 2015-10-30 CN CN201510725702.0A patent/CN105295819A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146273A (en) * | 2011-02-12 | 2011-08-10 | 东营正化环保科技有限公司 | Formaldehyde-free phenol-free adhesive and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 沈春林: "《防水工程手册》", 30 September 2006, 中国建筑工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109401638A (en) * | 2018-08-31 | 2019-03-01 | 重庆交通大学 | Railway ballastless track road bed waterproof layer expansion joint sealing material |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
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| WD01 | Invention patent application deemed withdrawn after publication |