Hydrolysis-resistant polyurethane adhesive and preparation method thereof

A polyurethane adhesive and hydrolysis-resistant technology, applied in the field of polyurethane adhesive and its preparation, can solve the problems of wasting materials, poor water resistance, affecting the service life, etc., and achieve strong corrosion resistance, high initial strength, and production saving cost effect

Inactive Publication Date: 2014-02-12
SUZHOU V I P NEW MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, due to the introduction of some hydrophilic groups into the molecular structure, i

Method used

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Example Embodiment

[0024] Example

[0025] The hydrolysis-resistant polyurethane adhesive in this embodiment is composed of a main agent and a curing agent. The main ingredients include polyester polyol, carbodiimide, diphenylmethane diisocyanate, adipic acid, polycaprolactone, polytetrahydrofuran ether polyol, defoamer and deionized water. The mass percentage of polyester polyol, carbodiimide, triethylamine, diphenylmethane diisocyanate, adipic acid, polycaprolactone, and polytetrahydrofuran ether polyol in the main agent is:

[0026] Polytetrahydrofuran ether polyol 70%

[0027] Diphenylmethane diisocyanate 7%

[0028] Carbodiimide 6%

[0029] Polyester polyol 4%

[0030] Adipic acid 5%

[0031] Triethylamine 4%

[0032] Polycaprolactone 0.6%

[0033] When the adhesive is prepared, the specific sequence steps are as follows:

[0034] (1) After the polyester polyol is dehydrated, it is melted with adipic acid and polycaprolactone in a nitrogen atmosphere to form a homogeneous mixture at a temperature of 60°...

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Abstract

The invention discloses a hydrolysis-resistant polyurethane adhesive and a preparation method thereof. The hydrolysis-resistant polyurethane adhesive comprises a host agent and a curing agent, wherein the host agent comprises the following components: polyester polyol, carbodiimide, diphenylmethane diisocyanate, adipic acid, polycaprolactone, polytetrahydrofuran ether polyol, a defoaming agent and deionized water, and the curing agent in the hydrolysis-resistant polyurethane adhesive is one or two of HDI (hexamethylene diisocyanate) and HMDI (hexamethylene diisocyanate). The hydrolysis-resistant polyurethane adhesive has excellent hydrolysis resistance, application range of the polyurethane adhesive is greatly widened, the hydrolysis-resistant polyurethane adhesive is especially applicable to the fields of paint and packaging with extremely high water resistance, and a preparation technology is simple, so that production cost is saved, and the effects of saving energy and reducing consumption are realized.

Description

technical field [0001] The invention relates to a polyurethane adhesive and a preparation method thereof, in particular to a hydrolysis-resistant polyurethane adhesive and a preparation method thereof. Background technique [0002] At present, water-based polyurethane adhesives have been widely used in printing and food packaging industries. Since the water-based polyurethane adhesive uses water as the medium, it has the advantages of non-toxic, non-flammable, environmentally friendly, and low cost. But at the same time, due to the introduction of some hydrophilic groups into the molecular structure, its water resistance is poor, which in turn affects the service life of the product and wastes materials. In recent years, with the increasingly severe problems of the earth's environmental protection and the strengthening of people's awareness of safety and environmental protection, researchers have paid more and more attention to the development and application of hydrolysis-...

Claims

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Application Information

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IPC IPC(8): C09J175/06C09J175/08C08G18/76C08G18/73C08G18/66C08G18/10
Inventor 陈照峰金莎莎徐滕州周介明
Owner SUZHOU V I P NEW MATERIAL
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