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Sprayable high-temperature-resistant polyurethane adhesive and production method thereof

A polyurethane adhesive, high temperature resistant technology, applied in the direction of polyurea/polyurethane adhesive, adhesive type, adhesive, etc., can solve the problems of inability to achieve fast adhesion, inability to provide initial adhesion, unsuitable for spraying, etc. , achieve excellent heat resistance and water resistance, solve the effects of low initial adhesion and increased molecular chain length

Inactive Publication Date: 2019-12-03
启东绿奥新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional polyurethane adhesive has a small molecular weight and a short molecular chain length, which usually cannot provide initial adhesion and cannot achieve fast adhesion, so it is not suitable for spraying

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A sprayable high temperature resistant polyurethane adhesive formulated to contain the following components, by weight percent:

[0027] Polyether polyol 18.7%

[0028] Polyester polyol 6.2%

[0029] Polyisocyanate 1 14.4%

[0030] Polyisocyanate 2 6.5%

[0031] Solvent 54.2%,

[0032] The solvent is one or more of ethyl acetate, butyl acetate, acetone, dimethyl succinate, dibutyl glutarate, and dimethyl adipate;

[0033] Polyisocyanate 1 is a prepolymer of TDI and trimethylolpropane, or a prepolymer of MDI and trimethylolpropane;

[0034] The polyether polyol is a polyoxypropylene polyol with a molecular weight of 3000 and a functionality of 2, or a polyoxypropylene polyol with a molecular weight of 3000 and a functionality of 3;

[0035] Polyester polyol polyethylene adipate or polyethylene glycol adipate with a molecular weight of 1000 and a functionality of 2, or polyneopentyl adipate with a molecular weight of 2000 and a functionality of 2, or a molecular weig...

Embodiment 2

[0046] A sprayable high temperature resistant polyurethane adhesive formulated to contain the following components, by weight percent:

[0047] Polyether polyol 15.4%

[0048] Polyester polyol 15.4%

[0049] Polyisocyanate 1 21.8%

[0050] Polyisocyanate 2 3.1%

[0051] Solvent 44.3%,

[0052] The solvent is one or more of ethyl acetate, butyl acetate, acetone, dimethyl succinate, dibutyl glutarate, and dimethyl adipate;

[0053] Polyisocyanate 1 is a prepolymer of TDI and trimethylolpropane, or a prepolymer of MDI and trimethylolpropane;

[0054] The polyether polyol is a polyoxypropylene polyol with a molecular weight of 3000 and a functionality of 2, or a polyoxypropylene polyol with a molecular weight of 3000 and a functionality of 3;

[0055] Polyester polyol polyethylene adipate or polyethylene glycol adipate with a molecular weight of 1000 and a functionality of 2, or polyneopentyl adipate with a molecular weight of 2000 and a functionality of 2, or a molecular wei...

Embodiment 3

[0066] A sprayable high temperature resistant polyurethane adhesive formulated to contain the following components, by weight percent:

[0067] Polyether polyol 17.4%

[0068] Polyester polyol 14.3%

[0069] Polyisocyanate 1 25.32%

[0070] Polyisocyanate 2 4.6%

[0071] Solvent 38.38%,

[0072] The solvent is one or more of ethyl acetate, butyl acetate, acetone, dimethyl succinate, dibutyl glutarate, and dimethyl adipate;

[0073] Polyisocyanate 1 is a prepolymer of TDI and trimethylolpropane, or a prepolymer of MDI and trimethylolpropane;

[0074]The polyether polyol is a polyoxypropylene polyol with a molecular weight of 3000 and a functionality of 2, or a polyoxypropylene polyol with a molecular weight of 3000 and a functionality of 3;

[0075] Polyester polyol polyethylene adipate or polyethylene glycol adipate with a molecular weight of 1000 and a functionality of 2, or polyneopentyl adipate with a molecular weight of 2000 and a functionality of 2, or a molecular we...

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PUM

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Abstract

The invention discloses sprayable high-temperature-resistant polyurethane adhesive. The sprayable high-temperature-resistant polyurethane adhesive contains the following components: polyether polyol,polyester polyol, polyisocyanate 1, polyisocyanate 2 and a solvent. A production method comprises the following steps: checking a reaction kettle before feeding is conducted; absorbing the measured polyether polyol and polyester polyol into the reaction kettle through a suction pipeline in sequence; conducting stirring, and in a stirring state, absorbing the measured polyisocyanate 1 and polyisocyanate 2 into the reaction kettle through the suction pipeline; maintaining temperature at 65-75 DEG C, and carrying out a reaction for 4-6 hours in the stirring state; reducing temperature to be 50-60DEG C, adding the solvent by means of a solvent pump, and conducting stirring for 0.5 hour; reducing temperature of an obtained material to be lower than 40 DEG C, and conducting discharging; and conducting sampling, and detecting NCO%, the viscosity and appearance. According to the sprayable high-temperature-resistant polyurethane adhesive, a cross-linked net structure is formed, polyurethane spray adhesive is endowed with excellent heat resistance and water resistance, the cross-linking density is improved, the polyurethane spray adhesive obtains good initial adhesion, and used solvents areall environment-friendly solvents.

Description

technical field [0001] The invention relates to a polyurethane adhesive, in particular to a sprayable high-temperature-resistant polyurethane adhesive and a preparation method thereof. Background technique [0002] Composite fabric is a new type of material formed by bonding one or more layers of textile materials, non-woven materials and other functional materials. It is widely used in furniture, sofas, clothing, automobiles and other industries. One of the essential fabrics. [0003] The preparation process of composite fabrics requires the use of corresponding adhesives. According to different preparation processes, it is generally divided into adhesives for spraying and adhesives for roller coating, referred to as spray glue and roller glue. Among them, the spray glue requires a sufficiently large initial bonding force, and after simple pressing, a strong initial bonding strength can be obtained to achieve rapid bonding. [0004] Traditional solvent-based spray adhesi...

Claims

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Application Information

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IPC IPC(8): C09J175/06C09J175/08C08G18/79C08G18/40C08G18/48C08G18/42
CPCC08G18/4018C08G18/4238C08G18/4804C08G18/794C09J175/06C09J175/08
Inventor 盛义鑫赵长荣
Owner 启东绿奥新材料有限公司
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