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Handmade polyurea, its preparation method and use

A polyurea, manual technology, applied in the field of polyurea, can solve the problems of long gel time, prolong gel time, and mechanical properties can not be guaranteed at the same time, achieve the effect of no VOC emission, reduce use cost, and prolong the operation time

Inactive Publication Date: 2016-05-04
大连怿文新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to propose a kind of manual polyurea, which can ensure mechanical properties while ensuring mechanical properties, Extended gel time for hand painting in tight, complex environments

Method used

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  • Handmade polyurea, its preparation method and use
  • Handmade polyurea, its preparation method and use
  • Handmade polyurea, its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment discloses an artificial polyurea, including the following components by weight ratio:

[0048] A component:

[0049] Toluene diisocyanate 41.9g;

[0050] DesmophenNH142022.4g;

[0051] Polyether polyol PPG-100080.7g;

[0052] Propyl carbonate PC5g;

[0053] B component:

[0054]

[0055]

[0056] The preparation steps of the artificial polyurea are as follows:

[0057] Preparation of component A: add 22.4g of DesmophenNH1420 and 80.7g of PPG-1000 into the container, stir the liquid at low speed for 5 minutes, heat it to 110~120℃, turn on the vacuum pump, and the vacuum degree is -0.1~-0.08 MPa, vacuum dehydration for 2 hours to remove a small amount of water contained in the raw materials, the detected moisture content is below three ten thousandths, and the liquid material temperature is cooled to about 25°C. Add 41.9g of toluene diisocyanate into the container, stir and react at room temperature for 1 hour. After the exotherm of the reaction is over, slowly incre...

Embodiment 2

[0066] This embodiment discloses an artificial polyurea, including the following components by weight ratio:

[0067] A component:

[0068] Diphenylmethane diisocyanate 62.6g;

[0069] Polyether polyol PPG-200071.4g;

[0070] Unilink420011g;

[0071] Propyl carbonate PC5g;

[0072] B component:

[0073]

[0074] The preparation steps of the artificial polyurea are as follows:

[0075] Preparation of component A: add 11g of Unilink4200 and 71.4g of PPG-2000 into the container, stir the liquid at low speed for 5 minutes, then heat to 110~120℃, turn on the vacuum pump, the vacuum degree is -0.1~-0.08MPa , Vacuum dehydration for 2 hours to remove a small amount of water contained in the raw materials, the detected moisture content is below three ten thousandths, and the liquid material temperature is cooled to about 25 ℃. Add 62.6g of diphenylmethane diisocyanate to the container, stir and react at room temperature for 1 hour. After the exotherm of the reaction, slowly increase the temperatu...

Embodiment 3

[0083] This embodiment discloses an artificial polyurea, including the following components by weight ratio:

[0084] A component:

[0085] Toluene diisocyanate 54.1g;

[0086] DesmophenNH152057.8g;

[0087] Polytetrahydrofuran polyol PTMG-100033.1g;

[0088] Propyl carbonate PC5g;

[0089] B component:

[0090]

[0091] The preparation steps of the artificial polyurea are as follows:

[0092] Preparation of component A: add 57.8g of DesmophenNH1520 and 33.1g of PTMG-1000 into the container, stir the liquid at low speed for 5 minutes, then heat to 110~120℃, turn on the vacuum pump, and the vacuum degree is -0.1~-0.08 MPa, vacuum dehydration for 2 hours to remove a small amount of water contained in the raw materials, the detected moisture content is below three ten thousandths, and the liquid material temperature is cooled to about 25°C. Add 54.1g of toluene diisocyanate into the container, stir and react at room temperature for 1 hour. After the exotherm of the reaction is over, slowly ...

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Abstract

The invention provides a manual polyurea, as well as a preparation method and use thereof. The manual polyurea comprises a component A and a component B at a weight ratio of (2:1)-(5:1), wherein the component A comprises the following components in parts by weight: 20-70 parts of aromatic isocyanate, 5-60 parts of steric hindrance ammoniate, 20-85 parts of polyether polyol and 1-5 parts of active diluent carbonic acid; the component B comprises the following components in parts by weight: 48-93 parts of steric hindrance ammoniate, 5-50 parts of filler, 2-4 parts of auxiliary and 1-3 parts of pigment. The invention further discloses a preparation method of the manual polyurea. The manual polyurea provided by the invention is scientific and reasonable in formulation, and the preparation method is simple and easy to realize; the gelation time is prolonged by the manual polyurea while the dynamic performance is guaranteed, so that the manual painting in narrow and complex environment can be realized.

Description

Technical field [0001] The invention relates to polyurea technology, in particular to a manual polyurea, its preparation method and application. Background technique [0002] Polyurethane is a kind of synthetic material with a very wide range of uses. Its industrial production is mainly made by the reaction of binary or polyisocyanate and various hydrogen donor compounds. Polyurethane materials have gradually formed a series of new synthetic materials with various varieties and excellent performance, which are widely used in various fields such as civil engineering, mechanical and electrical, shipbuilding, aviation, vehicles, light industry, textiles and so on. Products and varieties are increasing year by year, occupying a very important position in the material industry. [0003] Polyurea material is a kind of elastomer material produced by the reaction of isocyanate prepolymer and amino compound, which belongs to a branch of polyurethane material. With the development of moder...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D7/12C08G18/76C08G18/48
Inventor 彭瑞姜鹏波李同信史立彤蓝晨
Owner 大连怿文新材料科技发展有限公司
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