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Double-ingredient polyurethane adhesive and application thereof

A two-component polyurethane and adhesive technology, used in polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of single polyurethane water resistance and hardness that cannot be used alone for a long time

Active Publication Date: 2018-07-20
河南省海绵城市建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The water resistance and hardness of a single polyurethane cannot be used alone for a long time

Method used

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  • Double-ingredient polyurethane adhesive and application thereof
  • Double-ingredient polyurethane adhesive and application thereof

Examples

Experimental program
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Embodiment approach

[0030] As an embodiment of the present invention, the hydroxyl-containing alkane is preferably one of trimethylolpropane, 3-fluoro-3-(hydroxymethyl)oxetane and 1-hydroxycyclopentane ethanol one or more species.

[0031] As an embodiment of the present invention, the hydroxyl-containing alkane is trimethylolpropane.

[0032] vegetable oleic acid

[0033] Oleic acid is a monounsaturated Omega-9 fatty acid found in plants and animals. In the present invention, the vegetable oleic acid is selected from castor oil or epoxidized soybean oil.

[0034] As an embodiment of the present invention, the vegetable oleic acid is castor oil.

[0035] Polyol

[0036] Polyols are alcohols with two or more hydroxyl groups in their molecules. In the field of polyurethane, polyols are generally divided into two categories: polyether polyols and polyester polyols.

[0037] In the present invention, the polyol is a spiro polyol.

[0038] As an embodiment of the present invention, the spir...

Embodiment approach 1

[0087] Embodiment 1: This embodiment provides a two-component polyurethane adhesive, and the preparation raw materials of the two-component polyurethane adhesive include A component and B component,

[0088] The A component includes: hydroxyl-containing alkanes, vegetable oleic acid, polyols, silane coupling agent complexes, wetting agents, catalysts, ultraviolet absorbers and antioxidants;

[0089] The B component includes: isocyanate.

[0090] Embodiment 2. The two-component polyurethane adhesive described in Embodiment 1, the alkane containing hydroxyl is selected from trimethylolpropane, 1,1-cyclopentane dimethanol, 1-hydroxycyclopentane ethanol, 3- One or more of fluoro-3-(hydroxymethyl)oxetane and 1,1-cyclobutanedimethanol.

[0091] Embodiment 3. The two-component polyurethane adhesive described in embodiment 1, the vegetable oleic acid is selected from castor oil or epoxidized soybean oil.

[0092] Embodiment 4. The two-component polyurethane adhesive described in emb...

Embodiment 1

[0100] Embodiment 1: This embodiment provides two-component polyurethane adhesive, the preparation raw material of described two-component polyurethane adhesive comprises A component and B component,

[0101] The A component includes: hydroxyl-containing alkanes, vegetable oleic acid, polyols, silane coupling agent complexes, wetting agents, catalysts, ultraviolet absorbers, antioxidants and slow-release agents;

[0102] The B component includes: isocyanate.

[0103] The hydroxyl-containing alkane is trimethylolpropane; the vegetable oleic acid is castor oil.

[0104] The polyol is a spiro polyol, and the spiro polyol is an oligomer prepared from terephthalaldehyde and pentaerythritol, and the specific preparation method is as follows:

[0105] (1) In the reactor, add 0.0062mol p-benzaldehyde, 0.0026mol p-toluenesulfonic acid and 300mL chloroform, after heating to dissolve, after the solids in the reactor are all dissolved, start to slowly add the ethanol solution of pentaery...

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Abstract

The invention provides a double-ingredient polyurethane adhesive, which is prepared from the following raw materials including an ingredient A and an ingredient B, wherein the ingredient A is preparedfrom hydroxy-containing alkane, plant oleic acid, polylol, silane coupling agent compounds, wetting agents, catalysts, ultraviolet absorbents and anti-oxidants; the ingredient B is prepared from isocyanate. The double-ingredient polyurethane adhesive provided by the invention has excellent adhesion performance and high temperature resistance performance, is applied to the field of pervious bricks, and has excellent water percolation rate.

Description

technical field [0001] The invention relates to a polyurethane adhesive, and more particularly to a two-component polyurethane adhesive and its application in the field of building materials. Background technique [0002] Polyurethane adhesives refer to adhesives containing carbamate groups (-NHCOO-) or isocyanate groups (-NCO) in the molecular chain. Due to the strong polar isocyanate group and carbamate group, polyurethane has high reactivity and strong adhesion. Polyurethane adhesives have excellent shear strength and impact resistance, and can withstand shock vibration and bending fatigue. Polyurethane has a low glass transition temperature and excellent low temperature resistance. In addition, the polyurethane adhesive also has the characteristics of adjustable film hardness, simple bonding process, and can be cured at room temperature and heating. [0003] It is precisely because polyurethane adhesives have excellent bonding properties and strong bonding adaptabilit...

Claims

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Application Information

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IPC IPC(8): C09J175/04C08G18/32C08G18/36
CPCC08G18/3206C08G18/36C09J175/04
Inventor 李冰
Owner 河南省海绵城市建设有限公司
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