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Polyaspartic acid ester-based polyurethane adhesive and preparation method thereof

An aspartic acid ester and polyurethane technology, which is applied in the field of polyurethane adhesive based on polyaspartic acid ester and its preparation, can solve the problems of poor environmental resistance, short construction time, high reactivity, etc. The effect of reaction speed, prolongation of operation time, and improvement of manufacturability

Active Publication Date: 2019-03-15
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, general polyurethane adhesives have high reactivity, short construction time and high requirements on the humidity of the construction environment; after curing, the product has low hardness and poor environmental applicability. After a long period of drastic changes in temperature and humidity Afterwards, it is easy to age, fall off, etc. These defects largely limit the application of polyurethane in wind power motors

Method used

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  • Polyaspartic acid ester-based polyurethane adhesive and preparation method thereof
  • Polyaspartic acid ester-based polyurethane adhesive and preparation method thereof
  • Polyaspartic acid ester-based polyurethane adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A polyurethane adhesive based on polyaspartic acid ester is a two-component, including A component and B component, and the A component is mainly prepared from the following raw materials in parts by mass:

[0037]

[0038]

[0039] Component B is a polyurethane adhesive curing agent system, which is mainly composed of the following components in parts by mass:

[0040] 50 parts of high-functionality isocyanate (isocyanate > 4),

[0041] 10 parts of diphenylmethane diisocyanate,

[0042] 10 parts of polyurethane thinner (hexanedione).

[0043] The preparation method of the polyurethane adhesive glue of the present embodiment may further comprise the steps:

[0044] (1) Preparation of resin component A: Add 10 parts of polyurethane diluent, 5 parts of pigment, 1 part of defoamer, 1 part of white to 20 parts of polyaspartic acid ester resin and 5 parts of polyether polyol resin Carbon black and 40 parts of light calcium carbonate were dispersed at a high speed fo...

Embodiment 2

[0049] A polyurethane adhesive based on polyaspartic acid ester is a two-component, including A component and B component, and the A component is mainly prepared from the following raw materials in parts by mass:

[0050]

[0051] Component B is a polyurethane adhesive curing agent system, which is mainly composed of the following components in parts by mass:

[0052] 70 parts of high-functionality isocyanate (isocyanate > 4),

[0053] 20 parts of diphenylmethane diisocyanate,

[0054] Polyurethane diluent (diacetyl) 25 parts.

[0055] The preparation method of the polyurethane adhesive glue of the present embodiment may further comprise the steps:

[0056](1) Preparation of resin component A system: Add 10 parts of polyurethane diluent, 10 parts of pigment, 5 parts of defoamer, 3 parts of White carbon black and 65 parts of light calcium carbonate were dispersed at high speed for 30 minutes under the protection of nitrogen, and the rotation speed was 3500 rpm to prepare ...

Embodiment 3

[0061] A polyurethane adhesive based on polyaspartic acid ester is a two-component, including A component and B component, and the A component is mainly prepared from the following raw materials in parts by mass:

[0062]

[0063] Component B is a polyurethane adhesive curing agent system, which is mainly composed of the following components in parts by mass:

[0064] 60 parts of high-functionality isocyanate (isocyanate > 4),

[0065] 15 parts of diphenylmethane diisocyanate,

[0066] 20 parts of polyurethane thinner (cyclohexanedione).

[0067] The preparation method of the polyurethane adhesive glue of the present embodiment may further comprise the steps:

[0068] (1) Preparation of resin component A system: Add 13 parts of polyurethane diluent, 8 parts of pigment, 3 parts of defoamer, 2 parts of White carbon black and 55 parts of light calcium carbonate were dispersed at high speed for 30 minutes under the protection of nitrogen, and the rotation speed was 3500 rpm ...

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Abstract

The invention discloses a polyaspartic acid ester-based polyurethane adhesive which comprises a component A and a component B, wherein the component A is prepared from the following main raw materialsin parts by mass: polyaspartic acid ester, polyether polyol resin, a polyurethane diluent, pigment, a defoaming agent, white carbon black and light calcium carbonate; and component B is prepared fromthe following main raw materials in parts by mass: high-functionality isocyanate, diphenylmethane diisocyanate and a polyurethane diluent. The invention also discloses a preparation method of the polyurethane adhesive. According to the invention, the polyaspartic acid ester is applied in the polyurethane adhesive for the first time, so that the density of hydroxyl groups of a product can be limitedly controlled, the operation time of the polyurethane adhesive is obviously prolonged, and the polyaspartic acid ester is ensured to have relatively good toughness after curing; and at the same time, the polyaspartic acid ester has excellent weatherability, therefore, the polyurethane adhesive is also endowed with excellent weatherability and mechanical strength.

Description

technical field [0001] The invention belongs to the field of adhesives, in particular to a polyaspartic acid-based polyurethane adhesive and a preparation method thereof. Background technique [0002] With the continuous increase of people's demand for energy, the ways of obtaining new energy are also becoming more and more diversified. Among them, the sudden emergence of wind power technology has provided human beings with a new channel to obtain clean and renewable energy. Wind turbines have the characteristics of huge size and diverse operating environments. The insulating materials used in them are also required to have excellent environmental adaptability, and can withstand long-term low temperature, high temperature, rain erosion, salt spray, high and low temperature changes, etc. Especially the erosion of rainwater, salt spray and moisture is particularly prominent. At present, the treatment of wind power motors at home and abroad basically uses polymer insulating ma...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/04C09J11/00
CPCC08K3/36C08K2003/265C09J11/00C09J11/04C09J175/08
Inventor 曾亮黎超华尹超邢国华曾智李鸿岩
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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