CN105199656A - Double-component polyurethane sealant for construction - Google Patents
Double-component polyurethane sealant for construction Download PDFInfo
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- CN105199656A CN105199656A CN201510725559.5A CN201510725559A CN105199656A CN 105199656 A CN105199656 A CN 105199656A CN 201510725559 A CN201510725559 A CN 201510725559A CN 105199656 A CN105199656 A CN 105199656A
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Abstract
The invention relates to the technical field of construction materials, in particular to a double-component polyurethane sealant for construction. The double-component polyurethane sealant is prepared from a component A and a component B, wherein the component A is prepared from a raw material in parts by weight as follows: 16-28 parts of diphenyl-methane-diisocyanate; the component B is prepared from raw materials in parts by weight as follows: 152-171 parts of polyoxyethylene ether, 20-30 parts of poly (alkyl ether) trihydric alcohol, 15-25 parts of dibutyl phthalate, 14-28 parts of polytetrafluoroethylene, 15-23 parts of carbon black, 10-20 parts of dioctyl phthalate, 8-17 parts of sodium silicate, 5-15 parts of ferric chloride, 6-13 parts of aluminum sulfate and 8-15 parts of polyglycerol ester. The double-component polyurethane sealant for construction has high adhesive strength, high ageing resistance and water resistance, has elasticity and is long in service life.
Description
Technical field
The present invention relates to building material technical field, particularly a kind of dual-component polyurethane construction sealant.
Background technology
Dual-component polyurethane seal gum is widely used in the connection of building materials and being filled with a sealing of construction joint such as civil construction industry, transportation, concrete precast element.The expansion joint of the connection sealing of first-class road, bridge, airstrip, underground pipeline, joint and tunnel and buildings and the sealing of movement joint.Dual-component polyurethane construction sealant belongs to two component reaction-curable, by A, B two component form.Component A is oyster white or thick pale yellow shape base polyurethane prepolymer for use as, and B component is black body of paste or the liquid of the mixed dehydration such as solidifying agent and auxiliary agent, has certain elasticity and cohesiveness after solidification.This type of seal gum has very high tensile strength, excellent elasticity, wear resistance, oil-proofness and winter hardiness etc., but water tolerance, particularly alkaline-resisting water-based is not good enough.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dual-component polyurethane construction sealant, and bonding force is high, ageing-resistant, and water tolerance is high, flexible, long service life.
For achieving the above object, the present invention adopts following technical scheme:
The invention provides a kind of dual-component polyurethane construction sealant, be made up of A and B two kinds of components, each component is made up of the raw material of following weight part:
Preferably, the quality proportioning of component A and B component is 1:1.1 ~ 1.4.During use, A, B two kinds of components are mixed can construct by described proportioning.
Preferably, Soxylat A 25-7 relative molecular mass of the present invention is 3700 ~ 4500.
Preferably, poly alkyl ether trivalent alcohol relative molecular mass of the present invention is 4500 ~ 5300.
Preferably, dual-component polyurethane construction sealant of the present invention, be made up of A and B two kinds of components, each component is made up of the raw material of following weight part:
Beneficial effect of the present invention is:
1, water-fast, the resistance to chemical attack of dual-component polyurethane construction sealant of the present invention, weathering resistance, ageing-resistant performance are excellent.
2, dual-component polyurethane construction sealant of the present invention environmental protection, nontoxic, tasteless, pollution-free, plug and play, easy construction.
3, dual-component polyurethane construction sealant solids content of the present invention is high, and solid post shrinkage is little, good with various material cohesiveness, can general for building, roofing, bridge, tunnel, pond, lavatory bath between, around sewer line, bituminous pavement, sealing coiled material etc.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited to these embodiments.
Embodiment 1
Dual-component polyurethane construction sealant, be made up of A and B two kinds of components, each component is made up of the raw material of following weight part:
Component A and B component according to quantity proportioning are that 1:1.1 mixes, and can construct.
Described Soxylat A 25-7 relative molecular mass is 3700; Described poly alkyl ether trivalent alcohol relative molecular mass is 4500.
The preparation method of B component is: now add Soxylat A 25-7, poly alkyl ether trivalent alcohol, dibutyl phthalate, the pungent vinegar of phthalandione two and polyglycerol ester by said ratio in a kettle., heat up and stir, add tetrafluoroethylene, carbon black and water glass successively again, be warmed up to 90 DEG C and open vacuum pump dehydration, maintain vacuum more than 520mm mercury slug, stir dehydration more than 1 hour, be cooled to 80 DEG C, add Tai-Ace S 150 and iron(ic) chloride again, continue stirring 1 hour, naturally cooling to less than 40 DEG C can discharging packaging.
Embodiment 2
Dual-component polyurethane construction sealant, be made up of A and B two kinds of components, each component is made up of the raw material of following weight part:
Component A and B component according to quantity proportioning are that 1:1.2 mixes, and can construct.
Described Soxylat A 25-7 relative molecular mass is 4100; Described poly alkyl ether trivalent alcohol relative molecular mass is 5300.
The preparation method of component A is: add each component by said ratio in a kettle. and stir, be warming up to 90 DEG C of reactions and synthesize for 2 hours, and being cooled to less than 45 DEG C can discharging packaging.
The preparation method of B component is: now add Soxylat A 25-7, poly alkyl ether trivalent alcohol, dibutyl phthalate, the pungent vinegar of phthalandione two and polyglycerol ester by said ratio in a kettle., heat up and stir, add tetrafluoroethylene, carbon black and water glass successively again, be warmed up to 90 DEG C and open vacuum pump dehydration, maintain vacuum more than 520mm mercury slug, stir dehydration more than 1 hour, be cooled to 80 DEG C, add Tai-Ace S 150 and iron(ic) chloride again, continue stirring 1 hour, naturally cooling to less than 40 DEG C can discharging packaging.
Embodiment 3
Dual-component polyurethane construction sealant, be made up of A and B two kinds of components, each component is made up of the raw material of following weight part:
Component A and B component according to quantity proportioning are that 1:1.4 mixes, and can construct.
Described Soxylat A 25-7 relative molecular mass is 4500; Described poly alkyl ether trivalent alcohol relative molecular mass is 4900.
The preparation method of B component is: now add Soxylat A 25-7, poly alkyl ether trivalent alcohol, dibutyl phthalate, the pungent vinegar of phthalandione two and polyglycerol ester by said ratio in a kettle., heat up and stir, add tetrafluoroethylene, carbon black and water glass successively again, be warmed up to 90 DEG C and open vacuum pump dehydration, maintain vacuum more than 520mm mercury slug, stir dehydration more than 1 hour, be cooled to 80 DEG C, add Tai-Ace S 150 and iron(ic) chloride again, continue stirring 1 hour, naturally cooling to less than 40 DEG C can discharging packaging.
The performance index that dual-component 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/cm 3) | 1.8 ± 0.1 |
| 3 | extrudability (mL/min) | >=120 |
| 4 | surface drying time (h) | ≤ 20 |
| 5 | exudative index | ≤ 2 |
| 6 | sag (mm) | ≤ 2 |
| 7 | low temperature flexibility (DEG C) | -35 |
| 8 | bonding force KN/M | >=2.5 |
| 9 | life-span (year) | >=40 |
Claims (2)
1. a dual-component polyurethane construction sealant, is characterized in that, be made up of A and B two kinds of components, each component is made up of the raw material of following weight part:
The quality proportioning of component A and B component is 1:1.1 ~ 1.4;
Described Soxylat A 25-7 relative molecular mass is 3700 ~ 4500;
Described poly alkyl ether trivalent alcohol relative molecular mass is 4500 ~ 5300.
2. dual-component polyurethane construction sealant according to claim 1, is characterized in that, be made up of A and B two kinds of components, each component is made up of the raw material of following weight part:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725559.5A CN105199656A (en) | 2015-10-30 | 2015-10-30 | Double-component polyurethane sealant for construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510725559.5A CN105199656A (en) | 2015-10-30 | 2015-10-30 | Double-component polyurethane sealant for construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105199656A true CN105199656A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510725559.5A Pending CN105199656A (en) | 2015-10-30 | 2015-10-30 | Double-component polyurethane sealant for construction |
Country Status (1)
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| CN (1) | CN105199656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106554746A (en) * | 2016-10-28 | 2017-04-05 | 无锡市永兴金属软管有限公司 | A kind of wavy metal pipe binder being modified based on sodium silicate and preparation method thereof |
Citations (2)
| 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 |
| CN103820070A (en) * | 2014-03-07 | 2014-05-28 | 广州北峻工业材料有限公司 | Water-based polyurethane pressure-sensitive adhesive and preparation method thereof |
-
2015
- 2015-10-30 CN CN201510725559.5A patent/CN105199656A/en active Pending
Patent Citations (2)
| 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 |
| CN103820070A (en) * | 2014-03-07 | 2014-05-28 | 广州北峻工业材料有限公司 | Water-based polyurethane pressure-sensitive 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 |
|---|---|---|---|---|
| CN106554746A (en) * | 2016-10-28 | 2017-04-05 | 无锡市永兴金属软管有限公司 | A kind of wavy metal pipe binder being modified based on sodium silicate and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |