CN105349087A - Diamino silane-containing low-temperature curing polyurethane-based adhesive and preparation method thereof - Google Patents
Diamino silane-containing low-temperature curing polyurethane-based adhesive and preparation method thereof Download PDFInfo
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- CN105349087A CN105349087A CN201510782836.6A CN201510782836A CN105349087A CN 105349087 A CN105349087 A CN 105349087A CN 201510782836 A CN201510782836 A CN 201510782836A CN 105349087 A CN105349087 A CN 105349087A
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Abstract
The invention relates to a diamino silane-containing low-temperature curing polyurethane-based adhesive and a preparation method thereof. The adhesive comprises an ingredient A and an ingredient B and a ratio of the ingredient A to the ingredient B is 10: 1-1: 1. The ingredient A comprises, by mass, 30-70 parts of an isocyanate prepolymer, 10-30 parts of phthalic acid ester, 10-20 parts of anhydrous calcium chloride powder, 10-20 parts of titanium dioxide powder, 3-10 parts of fumed silica and 3-5 parts of toluene. The ingredient B comprises, by mass, 0.5-3 parts of diamino silane, 20-80 parts of polyether polyol, 0.05-1 part of triethanolamine, 0.05-1 part of triethylenediamine, 0.01-0.5 parts of dibutyltin dilaurate, 10-30 parts of calcium carbonate powder and 3-10 parts of fumed silica. Through use of the characteristics of diamino silane, low-temperature curing performances and bonding intensity of the product are improved. The adhesive is especially suitable for the field of tunnel bar planting and building structure binding in a cold region in winner.
Description
Technical field
The invention belongs to adhesive area, relate to a kind of low-temperature curing polyurethane-based adhesive containing two aminosilane and preparation method thereof, two aminosilane plays an important role wherein.
Background technology
The advantages such as compare with one-component polyurethane adhesive, dual-component polyurethane adhesive has quick solidifying, little by humidity effect, and intensity is large.But under some particular surroundingss, such as winter cold district, because temperature is lower, the curing speed of existing dual-component polyurethane adhesive does not still reach customer demand.If increase the content of catalyzer simply, then the stability in storage of tackiness agent can be caused to be deteriorated, the intensity after shaping reduces.
At present on the market for the dual-component polyurethane adhesive under low temperature environment, be all realized by the catalyst content increased inside tackiness agent, cause the product stock time short, what have can only store 6 months even 3 months.In addition, also cause the intensity of tackiness agent greatly to reduce, what have only has 5MPa even lower.And when this tackiness agent is used for railway, tunnel, during the infrastructure constructions such as bridge, can bring serious security-hidden trouble.
Summary of the invention
The object of the invention is a kind of low-temperature curing polyurethane-based adhesive containing two aminosilane and preparation method thereof, be characterized in, by the characteristic of two aminosilane, improve low-temperature curing performance and the cohesive strength of product.
For achieving the above object, a kind of low-temperature curing polyurethane-based adhesive containing two aminosilane of the present invention, described tackiness agent is made up of A and B two components, and component A and B component ratio are 10: 1-1: 1, wherein according to the mass fraction:
Component A comprises:
Isocyanate prepolymers body 30-70 part;
Phthalic ester 10-30 part;
Anhydrous chlorides of rase calcium powder 10-20 part;
Titania powder 10-20 part;
Aerosil 3-10 part;
Toluene 3-5 part;
B component comprises:
Two aminosilane 0.5-3 part;
Polyether glycol 20-80 part;
Trolamine 0.05-1 part;
Triethylene diamine 0.05-1 part;
Dibutyl tin laurate 0.01-0.5 part;
Calcium carbonate powders 10-30 part;
Aerosil 3-10 part.
As preferred technical scheme:
Low-temperature curing polyurethane-based adhesive containing two aminosilane of the present invention, the molecular weight that described Isocyanate prepolymers body is tolylene diisocyanate, diphenylmethanediisocyanate and polyether glycol are obtained by reacting is the Isocyanate prepolymers body of 3000-15000, it is by being mixed and heated to 70 DEG C by the poly-diphenylmethanediisocyanate of the diphenylmethanediisocyanate of the tolylene diisocyanate of 5wt%, 25wt%, 25wt% and the polyether glycol of 45wt%, and stir 120 minutes obtain; Terminal isocyanate groups content 3-7%.
Low-temperature curing polyurethane-based adhesive containing two aminosilane of the present invention, the polyether glycol of described polyether glycol to be molecular weight be 2000-8000 and functionality 2-6.
The present invention also proposes the preparation method of the above-described low-temperature curing polyurethane-based adhesive containing two aminosilane, comprises the following steps:
1) prepare component A: feed intake according to the feeding sequence of Isocyanate prepolymers body-phthalic ester-anhydrous chlorides of rase calcium powder-titania powder-aerosil-toluene, vacuumize and stir 1-2 hour;
2) prepare B component: feed intake according to the feeding sequence of two aminosilane-polyether glycol-trolamine-triethylene diamine-dibutyl tin laurate-calcium carbonate powders-aerosil, vacuumize and stir 1-2 hour;
3) by component A and the obtained described low-temperature curing polyurethane-based adhesive containing two aminosilane of B component mixing.
Beneficial effect
Owing to adopting above technical scheme, a kind of low-temperature curing polyurethane-based adhesive containing two aminosilane of the present invention, Amino End Group in its pair of aminosilane serves the effect of catalyzer when amino reacts, serve again the effect of linking agent, the reactive behavior of Amino End Group and isocyano is the highest, and at a lower temperature, still can take the lead in exothermic heat of reaction, liberated heat promotes A further, B two component reaction.In addition, due to the surfactivity of silane, the distribution of Amino End Group in system is very even, improves the homogeneity of product thus improves the intensity of product.Low-temperature curing polyurethane-based adhesive containing two aminosilane of the present invention is particularly suitable for being used in cold district in winter, tunnel bar planting, the fields such as building structure link.
Embodiment
Below in conjunction with embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
In the present invention, the molecular weight that Isocyanate prepolymers body is tolylene diisocyanate, diphenylmethanediisocyanate and polyether glycol are obtained by reacting is the Isocyanate prepolymers body of 3000-15000, it is by being mixed and heated to 70 DEG C by the poly-diphenylmethanediisocyanate of the diphenylmethanediisocyanate of the tolylene diisocyanate of 5wt%, 25wt%, 25wt% and the polyether glycol of 45wt%, and stir 120 minutes obtain; Terminal isocyanate groups content 3-7%.
Embodiment 1
A preparation method for low-temperature curing polyurethane-based adhesive containing two aminosilane, comprises the following steps:
1) component A is prepared: in mass fraction, feed intake according to the feeding sequence of 35 parts of Isocyanate prepolymers bodies-30 parts of phthalic esters-10 parts of anhydrous chlorides of rase calcium powders-10 parts of titania powders-10 parts of aerosils-5 parts of toluene, vacuumize stirring 1 hour;
2) B component is prepared: in mass fraction, feed intake according to the feeding sequence of 0.5 part of two aminosilane-80 parts of polyether glycols-0.05 part of trolamine-0.05 part of triethylene diamine-0.4 part of dibutyl tin laurate-10 parts of calcium carbonate powderss-9 parts of aerosil, vacuumize stirring 1 hour;
3) with glue rifle, component A and B component are mixed when using, actual measurement tensile strength 11.2MPa after solidification.
Embodiment 2
A preparation method for low-temperature curing polyurethane-based adhesive containing two aminosilane, comprises the following steps:
1) component A is prepared: in mass fraction, feed intake according to the feeding sequence of 62 parts of Isocyanate prepolymers bodies-10 parts of phthalic esters-10 parts of anhydrous chlorides of rase calcium powders-10 parts of titania powders-3 parts of aerosils-5 parts of toluene, vacuumize stirring 2 hours;
2) B component is prepared: in mass fraction, feed intake according to the feeding sequence of 0.6 part of two aminosilane-59 parts of polyether glycols-0.1 part of trolamine-0.1 part of triethylene diamine-0.2 part of dibutyl tin laurate-30 parts of calcium carbonate powderss-10 parts of aerosil, vacuumize stirring 2 hours;
3) with glue rifle, component A and B component are mixed when using, actual measurement tensile strength 13.2MPa after solidification.
Embodiment 3
A preparation method for low-temperature curing polyurethane-based adhesive containing two aminosilane, comprises the following steps:
1) component A is prepared: in mass fraction, feed intake according to the feeding sequence of 37 parts of Isocyanate prepolymers bodies-10 parts of phthalic esters-20 parts of anhydrous chlorides of rase calcium powders-20 parts of titania powders-10 parts of aerosils-3 parts of toluene, vacuumize stirring 1.5 hours;
2) B component is prepared: in mass fraction, feed intake according to the feeding sequence of 0.9 part of two aminosilane 80 parts of polyether glycols-1 part of trolamine-0.05 part of triethylene diamine-0.05 part of dibutyl tin laurate-10 parts of calcium carbonate powderss-8 parts of aerosil, vacuumize stirring 1.5 hours;
3) with glue rifle, component A and B component are mixed when using, actual measurement tensile strength 7.2MPa after solidification.
Embodiment 4
A preparation method for low-temperature curing polyurethane-based adhesive containing two aminosilane, comprises the following steps:
1) component A is prepared: in mass fraction, feed intake according to the feeding sequence of 30 parts of Isocyanate prepolymers bodies-30 parts of phthalic esters-10 parts of anhydrous chlorides of rase calcium powders-15 parts of titania powders-10 parts of aerosils-5 parts of toluene, vacuumize stirring 2 hours;
2) B component is prepared: in mass fraction, feed intake according to the feeding sequence of 3 parts of two aminosilane-70 parts of polyether glycols-0.6 part of trolamine-1 part of triethylene diamine-0.4 part of dibutyl tin laurate-20 parts of calcium carbonate powderss-5 parts of aerosils, vacuumize stirring 1 hour;
3) with glue rifle, component A and B component are mixed when using, actual measurement tensile strength 9.1MPa after solidification.
Embodiment 5
A preparation method for low-temperature curing polyurethane-based adhesive containing two aminosilane, comprises the following steps:
1) component A is prepared: in mass fraction, feed intake according to the feeding sequence of 60 parts of Isocyanate prepolymers bodies-10 parts of phthalic esters-14 parts of anhydrous chlorides of rase calcium powders-10 parts of titania powders-3 parts of aerosils-3 parts of toluene, vacuumize and stir 1-2 hour;
2) B component is prepared: in mass fraction, feed intake according to the feeding sequence of 2 parts of two aminosilane-60 parts of polyether glycols-0.2 part of trolamine-0.7 part of triethylene diamine-0.1 part of dibutyl tin laurate-27 parts of calcium carbonate powderss-10 parts of aerosils, vacuumize stirring 2 hours;
3) with glue rifle, component A and B component are mixed when using, actual measurement tensile strength 8.9MPa after solidification.
Claims (5)
1. the low-temperature curing polyurethane-based adhesive containing two aminosilane, it is characterized in that, described tackiness agent is made up of A and B two components, and component A and B component ratio are 10: 1-1: 1, wherein according to the mass fraction:
Component A comprises:
Isocyanate prepolymers body 30-70 part;
Phthalic ester 10-30 part;
Anhydrous chlorides of rase calcium powder 10-20 part;
Titania powder 10-20 part;
Aerosil 3-10 part;
Toluene 3-5 part;
B component comprises:
Two aminosilane 0.5-3 part;
Polyether glycol 20-80 part;
Trolamine 0.05-1 part;
Triethylene diamine 0.05-1 part;
Dibutyl tin laurate 0.01-0.5 part;
Calcium carbonate powders 10-30 part;
Aerosil 3-10 part.
2. the low-temperature curing polyurethane-based adhesive containing two aminosilane according to claim 1, it is characterized in that, the molecular weight that described Isocyanate prepolymers body is tolylene diisocyanate, diphenylmethanediisocyanate and polyether glycol are obtained by reacting is the Isocyanate prepolymers body of 3000-15000, it is by being mixed and heated to 70 DEG C by the poly-diphenylmethanediisocyanate of the diphenylmethanediisocyanate of the tolylene diisocyanate of 5wt%, 25wt%, 25wt% and the polyether glycol of 45wt%, and stir 120 minutes obtain.
3. the low-temperature curing polyurethane-based adhesive containing two aminosilane according to claim 2, it is characterized in that, described terminal isocyanate groups content is 3-7%.
4. the low-temperature curing polyurethane-based adhesive containing two aminosilane according to claim 1, is characterized in that, the polyether glycol of described polyether glycol to be molecular weight be 2000-8000 and functionality 2-6.
5. the preparation method of the low-temperature curing polyurethane-based adhesive containing two aminosilane according to any one of above claim 1-4, is characterized in that, comprise the following steps:
1) prepare component A: feed intake according to the feeding sequence of Isocyanate prepolymers body-phthalic ester-anhydrous chlorides of rase calcium powder-titania powder-aerosil-toluene, vacuumize and stir 1-2 hour;
2) prepare B component: feed intake according to the feeding sequence of two aminosilane-polyether glycol-trolamine-triethylene diamine-dibutyl tin laurate-calcium carbonate powders-aerosil, vacuumize and stir 1-2 hour;
3) by component A and the obtained described low-temperature curing polyurethane-based adhesive containing two aminosilane of B component mixing.
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| CN201510782836.6A CN105349087B (en) | 2015-11-16 | 2015-11-16 | A kind of low-temperature setting polyurethane-based adhesive containing double amino silanes and preparation method thereof |
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| CN201510782836.6A CN105349087B (en) | 2015-11-16 | 2015-11-16 | A kind of low-temperature setting polyurethane-based adhesive containing double amino silanes and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752852A (en) * | 2017-03-21 | 2017-05-31 | 新疆科能防水防护技术股份有限公司 | A kind of epoxy resin modification agent and preparation method thereof |
| CN108841354A (en) * | 2018-04-25 | 2018-11-20 | 襄阳精信汇明科技股份有限公司 | A kind of two-component solvent borne polyurethane Universal adhesive and preparation method thereof |
| CN112898526A (en) * | 2021-01-22 | 2021-06-04 | 南京大学 | Two-component instantaneous-drying temperature-resistant polyurethane and preparation method thereof |
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2015
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Patent Citations (6)
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| JPH01310622A (en) * | 1988-06-08 | 1989-12-14 | Matsushita Electric Ind Co Ltd | Cleaning device |
| CN101402845A (en) * | 2008-11-11 | 2009-04-08 | 北京市化学工业研究院 | Process for producing flame-proof fluid sealant for construction |
| CN102391455A (en) * | 2011-10-08 | 2012-03-28 | 广州柏胜化工有限公司 | Double-component organic silicon polyurethane elastomer and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752852A (en) * | 2017-03-21 | 2017-05-31 | 新疆科能防水防护技术股份有限公司 | A kind of epoxy resin modification agent and preparation method thereof |
| CN108841354A (en) * | 2018-04-25 | 2018-11-20 | 襄阳精信汇明科技股份有限公司 | A kind of two-component solvent borne polyurethane Universal adhesive and preparation method thereof |
| CN112898526A (en) * | 2021-01-22 | 2021-06-04 | 南京大学 | Two-component instantaneous-drying temperature-resistant polyurethane and preparation method thereof |
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| CN105349087B (en) | 2018-03-16 |
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Effective date of registration: 20180814 Address after: 201100 L3054 3 floor, 41 building, 398 Heqing Road, Minhang District, Shanghai. Patentee after: Shanghai snow Chen Construction Engineering Co., Ltd. Address before: 201612 307 Lane 1588, Ming Zhong Road, Songjiang District, Shanghai. Patentee before: Liu Waiwai |