Single-component polyurethane adhesive and preparation method thereof

A polyurethane adhesive, one-component technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of skinning, agglomeration, short storage period, etc., achieve strong catalytic effect, storage The effect of stability and breaking through the catalytic limit

CN105542700AActive Publication Date: 2016-05-04GUANGZHOU RETAN NEW MATERIALS & HI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-05-04

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Abstract

The invention relates to a single-component polyurethane adhesive and a preparation method thereof. The single-component polyurethane adhesive comprises an adhesive and a quick-drying agent. The adhesive is prepared from 0-3% of dibasic alcohol, 15-50% of polymer polylol, 30-70% of isocyanate, 0-0.3% of catalyst, 0-25% of solvent and 0-15% of plasticizer, totaling 100%. The quick-drying agent is prepared from 1-50% of catalyst, 0-80% of solvent, 0-80% of plasticizer, 0.1-15% of silane coupling agent, 0-10% of dibasic alcohol, 0-10% of polylol and 10-20% of polymer polylol, totaling 100%. The quick-drying agent accounts for 0-10% of the adhesive. The single-component polyurethane adhesive has the advantages of high storage stability and adjustable curing speed, and can adapt to different technological conditions and operating environment temperatures.
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Description

technical field

[0001] The invention relates to the field of adhesives, in particular to a one-component polyurethane adhesive and a preparation method thereof. Background technique

[0002] Polyurethane adhesives are generally divided into one-component polyurethane adhesives and two-component polyurethane adhesives.

[0003] Two-component polyurethane adhesives are generally composed of two components, A and B. When used, the two components must be mixed evenly according to a certain ratio. A and B components should not be used alone; at the same time, the stirred glue must After the time is used up, especially in the high temperature season, the viscosity of the glue increases rapidly after mixing, which makes it difficult to use later, a large amount of glue is scrapped or cannot form a good bond, and a large number of substandard products are produced. However, since the two components A and B are stored separately, the storage stability is relatively high, which can g...

Examples

Embodiment 1

[0042] A one-component polyurethane adhesive consisting of an adhesive and a quick-drying agent:

[0043] The raw material composition and weight percentage of the adhesive are: 46% of polyether polyol PPG-2000, 51% of isocyanate Suprasec2020, and 3% of diol 1,4-butanediol.

[0044] Quick-drying agent composition and percentage by weight are: 20% catalyst dibutyltin dilaurate, 15% polyester polyol I-stickpolyolY, 5% silane coupling agent SilquestA-187, 10% silane coupling agent SilquestA-Link597, 50% solvent ethyl acetate.

[0045] In this embodiment, a quick-drying agent component of 2% by weight of the adhesive is added.

[0046] The preparation method of above-mentioned one-component polyurethane adhesive comprises the steps:

[0047](1) Preparation of adhesive: Accurately weigh each raw material according to the weight percentage, pour the isocyanate Suprasec2020 into the stirring tank, heat the stirring tank to 70-90°C, add polyether polyol PPG2000 and stir evenly, seal...

Embodiment 2

[0050] A one-component polyurethane adhesive consisting of an adhesive and a quick-drying agent:

[0051] The raw material composition and weight percentage of the adhesive are: 15% polyether polyol PPG-400, 7% polyester polyol I-stickpolyol160, 55% isocyanate Suprasec3056, 1% diol 1,4-butyl Diol, 13.7% solvent ethyl acetate, 8% solvent acetone, 0.3% catalyst I-stickcatalyst001.

[0052] Quick-drying agent composition and percentage by weight are: 18% catalyst dibutyltin dilaurate, 2% catalyst triethylenediamine, 15% polyester polyol I-stickpolyolY, 3% silane coupling agent SilquestA- 187. 5% silane coupling agent SilquestA-Link597, 50% solvent ethyl acetate, 7% solvent acetone.

[0053] In this embodiment, different weights of quick-drying agent components are added with different temperatures, as shown in Table 2 below.

[0054] The preparation method of above-mentioned one-component polyurethane adhesive comprises the steps:

[0055] (1) Preparation of adhesive: Accurate...

Embodiment 3

[0058] A one-component polyurethane adhesive consisting of an adhesive and a quick-drying agent:

[0059] The raw material composition and weight percentage of the adhesive are: 30% polyester polyol I-stickpolyol160, 60% isocyanate Suprasec3056, and 10% solvent ethyl acetate.

[0060] The quick-drying agent composition and percentage by weight are: 20% catalyst dibutyltin dilaurate, 1% catalyst triethylenediamine, 15% polyester polyol I-stickpolyolY, 3% silane coupling agent SilquestA- 187. 5% silane coupling agent SilquestA-Link597, 10% plasticizer trioctyl citrate, 46% solvent ethyl acetate.

[0061] In this embodiment, a quick-drying agent component of 5% by weight of the adhesive is added.

[0062] The preparation method of above-mentioned one-component polyurethane adhesive comprises the steps:

[0063] (1) Preparation of adhesive: Accurately weigh each raw material according to the weight percentage, pour the isocyanate Suprasec3056 into the stirring tank, heat the sti...