CN101580699A - Polyurethane sealant and preparation method thereof - Google Patents
Polyurethane sealant and preparation method thereof Download PDFInfo
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- CN101580699A CN101580699A CNA2008101064170A CN200810106417A CN101580699A CN 101580699 A CN101580699 A CN 101580699A CN A2008101064170 A CNA2008101064170 A CN A2008101064170A CN 200810106417 A CN200810106417 A CN 200810106417A CN 101580699 A CN101580699 A CN 101580699A
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Abstract
The invention discloses a polyurethane sealant and a preparation method thereof. The polyurethane sealant comprises 30-70 weight percent of performed polymer, dinonyl phthalate, carbon soot, N,N-dimethyl benzylamine, byk-111, oxazolidine, epoxy silicone hydride and amino-group silicone hydride, wherein the performed polymer is obtained through the reaction of polyoxyalkylene dihydric alcohol, polyoxypropylene trihydric alcohol, hexamethylene glycol and 4,4'-diphenylmethane diisocyanate by taking dibutyl tin laurate as a catalyst. After being solidified, the polyurethane sealant has over 8MPa of tensile strength of elastomer and over 450 percent of elongation at break, not only has better solidifying speed at normal temperature, but also has very high solidifying speed at low temperature and low humidity. The polyurethane sealant is suitable for elastic splicing with high mechanical property, such as the elastic splicing during the installation of glass of automobiles, trains, ships, airplanes, cable cars, and the like and is suitable for the rapid splicing at low temperature and low humidity and other elastic splicing with high mechanical property.
Description
Technical field
The present invention relates to a kind of polyurethane sealant, particularly relate to a kind of high modulus polyurethane seal gum that is used for elastic adhesives such as glass, metal and pottery, stone material, timber and preparation method thereof.
Background technology
Seal gum is to be used for filling space (hole, joint, seam etc.) and to filling the basic unit interface material of bonding effect to be arranged, and it mainly comprises: organosilicon (comprising modified organic silicon) class, polyurethanes, thiorubber class, esters of acrylic acid, SBR rubber-like, butyl type rubber, pitch, oiliness caulk compound class etc.And be used to fill must stand to shake or rising-heat contracting-cold etc. due to have retractility the gap, then must adopt elastic sealant.Elastic sealant is with bonding and two kinds of products that function rolls into one of sealing.Wherein the high-grade elastic sealant of three classes of better performances is respectively organosilicon sealant, polysulfide sealant and polyurethane sealant.In recent years, the application of elastic sealant in many industry, civil areas such as building, building, automobile, boats and ships, electric communication more and more widely.
In the above-mentioned elastic sealant, polyurethane sealant is with the fastest developing speed, and demand increases gradually, is because it has good performance.The characteristics of polyurethane sealant have: the wear resistance that (1) is good; (2) low-temperature pliability; (3) the performance adjustable extent is wide; (4) physical strength is big; (5) cementability is good; (6) good springiness has good Restoration, can be suitable for dynamic seam; (7) good weatherability is 15-20 work-ing life; (8) oil-proofness is good; (9) anti-biological aging; (10) moderate cost.The inventor finds when realizing technical solution of the present invention, the defective that existing polyurethane sealant especially exists when vehicle glass is installed: one-component polyurethane sealant is used for vehicle glass and assembles when bonding, and its body intensity is lower than 8Mpa (GB/T528) or unit elongation is lower than 450%.(GB/T528) 2. at low temperature during as 0 ℃-10 ℃, solidification rate is lower than 3.0mm/24 hour (10 ℃ ± 2 ℃, 30% ± 5% humidity).Above-mentioned defective effect the effect or the work efficiency of one-component polyurethane sealant.
Summary of the invention
Main purpose of the present invention is, overcome the defective that existing one-component polyurethane sealant exists, a kind of new polyurethane sealant and preparation method thereof is provided, technical problem to be solved is to make it improve body intensity and unit elongation, and have high solidification rate at low temperatures, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of polyurethane sealant that the present invention proposes, each components contents is in the quality percentage composition, and this polyurethane sealant comprises:
Performed polymer: 30-70%;
Dinonylphthalate: 10-50%;
Carbon black: 10-40%;
N, N-diformazan benzylamine: 0.05-0.15%;
BYK-111： 0.1-0.5％；
Oxazolidine: 0.2-5%;
Epoxies silane: 0.5-1.5%;
Amino one type of silane: 0.5-1.5%;
Above-mentioned performed polymer be with the weight percentage be polyoxytrimethylene trivalent alcohol, the 0.5-5% of polyoxytrimethylene dibasic alcohol, the 20-55% of 30-60% hexylene glycol, 10-30% 4, the dibutyl tin laurate of 4 '-'-diphenylmethane diisocyanate and 0.1-0.5%, reaction obtains under 90 ℃-100 ℃.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, an embodiment of aforesaid polyurethane sealant, the molecular weight of wherein said polyoxytrimethylene dibasic alcohol is 1500-4000.
Preferably, an embodiment of aforesaid polyurethane sealant, the molecular weight 4800-6500 of wherein said polyoxytrimethylene trivalent alcohol.
Preferably, an embodiment of aforesaid polyurethane sealant, wherein said performed polymer is to prepare under nitrogen protection.
The object of the invention to solve the technical problems can also realize by the following technical solutions.The preparation method of a kind of polyurethane sealant that proposes according to the present invention, it may further comprise the steps:
With the quality percentage composition is that the amino one type of silane of 0.5-1.5% epoxies silane and 0.5-1.5% is mixed, and places more than 24 hours; Then, add performed polymer, Dinonylphthalate, carbon black, N, N-diformazan benzylamine, BYK-111 mix the paste seal gum to reach oxazolidine under vacuum state.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, embodiment of the preparation method of aforesaid polyurethane sealant, the quality percentage composition of wherein said performed polymer is 30-70%; The quality percentage composition of Dinonylphthalate is 10-50%; Sooty quality percentage composition is 10-40%; N, the quality percentage composition of N-diformazan benzylamine is 0.05-0.15%; The quality percentage composition of BYK-111 is 0.1-0.5%; The quality percentage composition of oxazolidine is 0.2-5%.
Preferably, embodiment of the preparation method of aforesaid polyurethane sealant, wherein said performed polymer be with the weight percentage be polyoxytrimethylene trivalent alcohol, the 0.5-5% of polyoxytrimethylene dibasic alcohol, the 20-55% of 30-60% hexylene glycol, 10-30% 4, the dibutyl tin laurate of 4 '-'-diphenylmethane diisocyanate and 0.1-0.5%, reaction obtains under 90 ℃-100 ℃.
Preferably, embodiment of the preparation method of aforesaid polyurethane sealant, the molecular weight of wherein said polyoxytrimethylene dibasic alcohol is 1500-4000.
Preferably, embodiment of the preparation method of aforesaid polyurethane sealant, the molecular weight 4800-6500 of wherein said polyoxytrimethylene trivalent alcohol.
Preferably, embodiment of the preparation method of aforesaid polyurethane sealant, wherein said performed polymer is to prepare under nitrogen protection.
By technique scheme, polyurethane sealant of the present invention has following advantage: the elastomeric tensile strength of urethanes (GB/T528) more than 8Mpa after this polyurethane sealant solidifies, and its elongation at break is at (GB/T528) more than 450%.This polyurethane sealant is not only under 15 ℃-30 ℃ of normal temperature, 50 ± 5% humidity environments, it has solidification rate preferably, as greater than 4mm/24 hour, simultaneously under low temperature (0 ℃-15 ℃) and low humidity (30 ± 5% humidity) condition, very high solidification rate is also arranged, greater than 3mm/24 hour.Polyurethane sealant of the present invention is applicable to the elastic adhesive of strong mechanical performance, glass cementation such as, boats and ships bonding as vehicle glass, aircraft, cable car.Be applicable to bonding fast under the low temperature and low humidity environment, and the elastic adhesive of other strong mechanical performance, bonding as metal, timber, stone material etc.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technique means of the present invention, and can be implemented according to the content of specification sheets, below with preferred embodiment of the present invention describe in detail as after.
Embodiment
Reach technique means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with preferred embodiment, the embodiment of the polyurethane sealant that foundation the present invention is proposed describe in detail as after.
Synthesizing of performed polymer
Performed polymer; be with the weight percentage be polyoxytrimethylene trivalent alcohol (molecular weight 4800-6500), the 0.5-5% of polyoxytrimethylene dibasic alcohol (molecular weight 1500-4000), the 20-55% of 30-60% hexylene glycol, 10-30% 4; the dibutyl tin laurate of 4 '-'-diphenylmethane diisocyanate and 0.1-0.5% (as catalyzer); under the nitrogen protection, reaction obtained in 2-5 hour under 90 ℃-100 ℃ in reactor.Described performed polymer be molecular weight at least isocyanate terminated the and molecular weight of the difunctionality more than 1500 molecular weight at least in the three-functionality-degree blocked isocyanate more than 4800 and their mixture, the perhaps intermediate polymer that forms by the two chain extension.
Obtain performed polymer A-D according to such scheme, it is specifically formed referring to table 1
Table 1
| Performed polymer | Polyether Glycols % | Polyether-tribasic alcohol % | 4,4 '-'-diphenylmethane diisocyanate % | Hexylene glycol % | Dibutyl tin laurate % |
| A | 30 | 53 | 14.5 | 2 | 0.5 |
| B | 37 | 45 | 15 | 2.5 | 0.5 |
| C | 40 | 42 | 15 | 2.9 | 0.1 |
| D | 45 | 36 | 15.7 | 2.8 | 0.5 |
The preparation of polyurethane sealant
Mix by two coupling agents earlier, promptly use epoxies silane and amino one type of silane hybrid reaction, place after 24 hours, add above-mentioned performed polymer, Dinonylphthalate (DINP), carbon black, N, N-diformazan benzylamine (BDMA), BYK-111 mix the paste seal gum to reach oxazolidine under vacuum state.In weight percentage is 100%, and each above-mentioned component concentration is by percentage to the quality:
Performed polymer: 30-70%;
Dinonylphthalate: 10-50%;
Carbon black: 10-40%; (commercially available)
N, N-diformazan benzylamine: 0.05-0.15% (commercially available)
BYK-111:0.1-0.5% (commercially available)
Oxazolidine: 0.2-5% (commercially available)
Epoxies silane: 0.5-1.5% (commercially available)
Amino one type of silane: 0.5-1.5% (commercially available)
Following table 2 is the example 1-6 of the polyurethane sealant for preparing according to such scheme.
Table 2
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1, a kind of polyurethane sealant is characterized in that it comprises:
Performed polymer: 30-70%;
Dinonylphthalate: 10-50%;
Carbon black: 10-40%;
N, N-diformazan benzylamine: 0.05-0.15%;
BYK-111： 0.1-0.5％；
Oxazolidine: 0.2-5%;
Epoxies silane: 0.5-1.5%;
Amino one type of silane: 0.5-1.5%;
Above-mentioned each components contents is in the quality percentage composition;
Above-mentioned performed polymer be with the weight percentage be polyoxytrimethylene trivalent alcohol, the 0.5-5% of polyoxytrimethylene dibasic alcohol, the 20-55% of 30-60% hexylene glycol, 10-30% 4, the dibutyl tin laurate of 4 '-'-diphenylmethane diisocyanate and 0.1-0.5%, reaction obtains under 90 ℃-100 ℃.
2, polyurethane sealant according to claim 1, the molecular weight that it is characterized in that wherein said polyoxytrimethylene dibasic alcohol is 1500-4000.
3, polyurethane sealant according to claim 1 is characterized in that the molecular weight 4800-6500 of wherein said polyoxytrimethylene trivalent alcohol.
4, polyurethane sealant according to claim 1 is characterized in that wherein said performed polymer is to prepare under protection of inert gas such as nitrogen.
5, a kind of preparation method of polyurethane sealant is characterized in that it may further comprise the steps:
With the quality percentage composition is that the amino one type of silane of 0.5-1.5% epoxies silane and 0.5-1.5% is mixed, and places more than 24 hours;
Then, add performed polymer, Dinonylphthalate, carbon black, N, N-diformazan benzylamine, BYK-111 and oxazolidine mix the paste seal gum under vacuum state.
6, the preparation method of polyurethane sealant according to claim 5, the quality percentage composition that it is characterized in that wherein said performed polymer is 30-70%; The quality percentage composition of Dinonylphthalate is 10-50%; Sooty quality percentage composition is 10-40%; N, the quality percentage composition of N-diformazan benzylamine is 0.05-0.15%; The quality percentage composition of BYK-111 is 0.1-0.5%; The quality percentage composition of oxazolidine is 0.2-5%.
7, the preparation method of polyurethane sealant according to claim 6, it is characterized in that wherein said performed polymer be with the weight percentage be polyoxytrimethylene trivalent alcohol, the 0.5-5% of polyoxytrimethylene dibasic alcohol, the 20-55% of 30-60% hexylene glycol, 10-30% 4, the dibutyl tin laurate of 4 '-'-diphenylmethane diisocyanate and 0.1-0.5%, reaction obtains under 90 ℃-100 ℃.
8, the preparation method of polyurethane sealant according to claim 7, the molecular weight that it is characterized in that wherein said polyoxytrimethylene dibasic alcohol is 1500-4000.
9, the preparation method of polyurethane sealant according to claim 7 is characterized in that the molecular weight 4800-6500 of wherein said polyoxytrimethylene trivalent alcohol.
10, the preparation method of polyurethane sealant according to claim 7 is characterized in that wherein said performed polymer is to prepare under nitrogen protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810106417A CN101580699B (en) | 2008-05-13 | 2008-05-13 | Polyurethane sealant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810106417A CN101580699B (en) | 2008-05-13 | 2008-05-13 | Polyurethane sealant and preparation method thereof |
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| CN101580699A true CN101580699A (en) | 2009-11-18 |
| CN101580699B CN101580699B (en) | 2012-10-10 |
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| CN200810106417A Expired - Fee Related CN101580699B (en) | 2008-05-13 | 2008-05-13 | Polyurethane sealant and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827569A (en) * | 2012-08-23 | 2012-12-19 | 江门亿源生化工程有限公司 | Quick-drying polyurethane adhesive with single component and no solvent and preparation method thereof |
| CN102903969A (en) * | 2012-10-18 | 2013-01-30 | 双登集团股份有限公司 | Glue-sealing process for lead-acid storage battery |
| CN103215005A (en) * | 2013-05-07 | 2013-07-24 | 东北林业大学 | Lignin-containing polyurethane sealant and preparation method thereof |
| CN103923322A (en) * | 2014-02-20 | 2014-07-16 | 上海大学 | Epoxy/polyurethane/organosilicon HB-LED packaging material preparation method |
| CN105199657A (en) * | 2015-11-12 | 2015-12-30 | 三友（天津）高分子技术有限公司 | Polyurethane sealant and preparation method thereof |
| CN106833495A (en) * | 2017-03-21 | 2017-06-13 | 新疆科能防水防护技术股份有限公司 | Polyurethane sealant and preparation method thereof |
| CN108822786A (en) * | 2018-07-07 | 2018-11-16 | 深圳市鸿三松实业有限公司 | One-component damp solidifying polyurethane sealant that is a kind of containing reflective pigment and not flowing Heisui River |
| CN109777338A (en) * | 2018-12-25 | 2019-05-21 | 三友（天津）高分子技术有限公司 | High-intensitive high elongation at tear monocomponent polyurethane adhesive and preparation method |
| WO2022111623A1 (en) * | 2020-11-26 | 2022-06-02 | Sika技术股份公司 | Polyurethane composition having reduced foaming and matte effect |
-
2008
- 2008-05-13 CN CN200810106417A patent/CN101580699B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827569A (en) * | 2012-08-23 | 2012-12-19 | 江门亿源生化工程有限公司 | Quick-drying polyurethane adhesive with single component and no solvent and preparation method thereof |
| CN102903969A (en) * | 2012-10-18 | 2013-01-30 | 双登集团股份有限公司 | Glue-sealing process for lead-acid storage battery |
| CN103215005A (en) * | 2013-05-07 | 2013-07-24 | 东北林业大学 | Lignin-containing polyurethane sealant and preparation method thereof |
| CN103923322A (en) * | 2014-02-20 | 2014-07-16 | 上海大学 | Epoxy/polyurethane/organosilicon HB-LED packaging material preparation method |
| CN103923322B (en) * | 2014-02-20 | 2016-06-29 | 上海大学 | A kind of epoxy/polyurethane/organosilicon HB-LED encapsulating material preparation method |
| CN105199657A (en) * | 2015-11-12 | 2015-12-30 | 三友（天津）高分子技术有限公司 | Polyurethane sealant and preparation method thereof |
| CN106833495A (en) * | 2017-03-21 | 2017-06-13 | 新疆科能防水防护技术股份有限公司 | Polyurethane sealant and preparation method thereof |
| CN108822786A (en) * | 2018-07-07 | 2018-11-16 | 深圳市鸿三松实业有限公司 | One-component damp solidifying polyurethane sealant that is a kind of containing reflective pigment and not flowing Heisui River |
| CN109777338A (en) * | 2018-12-25 | 2019-05-21 | 三友（天津）高分子技术有限公司 | High-intensitive high elongation at tear monocomponent polyurethane adhesive and preparation method |
| WO2022111623A1 (en) * | 2020-11-26 | 2022-06-02 | Sika技术股份公司 | Polyurethane composition having reduced foaming and matte effect |
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| CN101580699B (en) | 2012-10-10 |
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