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IPDI type transparent high-strength polyurethane plate and preparation method thereof

A high-strength, polyurethane technology, used in chemical instruments and methods, mixers, mixers with rotary stirring devices, etc., can solve problems such as low transparency, incomplete crystallization of raw materials, and incomplete cleanliness

Inactive Publication Date: 2021-05-18
JIANGSU IRON ANCHOR GLASS LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] IPDI-type transparent high-strength polyurethane sheet has the advantages of both PC sheet and acrylic, and has excellent weather resistance, optical properties, and mechanical properties. However, after the preparation of polyurethane sheets, there is a common problem, that is, the yellowing of the finished products is common. , the overall transparency is not high, which affects the use effect, and at the same time, it will cause a decrease in the utilization rate of polyurethane boards, resulting in a large waste of resources. A large part of the reason for this phenomenon is the lack of raw materials in the board preparation process. Complete crystallization, how to reduce incomplete cleanliness becomes an important problem to be overcome in the preparation process

Method used

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  • IPDI type transparent high-strength polyurethane plate and preparation method thereof
  • IPDI type transparent high-strength polyurethane plate and preparation method thereof
  • IPDI type transparent high-strength polyurethane plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Seefigure 1 An IPDI-type transparent high-intensity polyurethane sheet comprising: 71% isophorone diisocyanate IPDI, 14% small molecular chain extender, and 15% crosslinking agent.

[0047]An IPDI-type transparent high strength polyurethane sheet, the preparation method thereof includes the following steps:

[0048]S1, A material preparation:

[0049]S11, add BDO to a three-mouth flask equipped with a toner mixer, heated to 110 ° C, dehydrated under vacuum, so that the mass fraction of water in the material is not higher than 0.05%, and the temperature is lowered to 80 ° C;

[0050]S12, the dehydrated BDO is added to the measured IPDI, maintaining the heating of the heating at 80 ° C for 3 h, reaching the theoretical NCO content;

[0051]S2, B material preparation: Heat the crosslinking agent to 80 ° C as B material.

[0052]S3, pouring: mixing A, B material, stirred for 3 minutes, cast into the mold, and standing at 80 ° C for 2 h, then demolding, resulting in finished products;

[0053]S4, test:...

Embodiment 2

[0057]Seefigure 1 An IPDI-type transparent high-intensity polyurethane sheet comprising the following components of mass sharing: 65% isophorone diisocyanate IPDI, 5% small molecular chain extender and 35% crosslinking agent.

[0058]An IPDI-type transparent high strength polyurethane sheet, the preparation method thereof includes the following steps:

[0059]S1, A material preparation:

[0060]S11, add BDO to a three-mouth flask equipped with a toner mixer, heated to 110 ° C, dehydrated under vacuum, so that the mass fraction of water in the material is not higher than 0.05%, and the temperature is lowered to 80 ° C;

[0061]S12, the dehydrated BDO is added to the measured IPDI, maintaining the heating of the heating at 80 ° C for 3 h, reaching the theoretical NCO content;

[0062]S2, B material preparation: Heat the crosslinking agent to 80 ° C as B material.

[0063]S3, pouring: mixing A, B material, stirred for 1.5 minutes, cast into the mold, and standing at 80 ° C for 2 h, then demolding, resul...

Embodiment 3

[0066]Seefigure 1 An IPDI-type transparent high-strength polyurethane sheet, including the following components of mass: 80% isophorone diisocyanate IPDI, 35% small molecular chain extender and 5%-crosslinking agent.

[0067]An IPDI-type transparent high strength polyurethane sheet, the preparation method thereof includes the following steps:

[0068]S1, A material preparation:

[0069]S11, add BDO to three flasks equipped with a very temperature mixer, a thermometer, heated to 100 ° C, dehydrated under vacuum, so that the mass fraction of water in the material is not higher than 0.05%, and the temperature is reduced to 80 ° C.

[0070]S12, the dehydrated BDO is added to the measured IPDI, and the heating and stirring reaction at 80 ° C is maintained at 80 ° C for 2 h, reaching the theoretical NCO content;

[0071]S2, B material preparation: Heat the crosslinking agent to 80 ° C as B material.

[0072]S3, pouring: mixing A, B material, stirred for 2 minutes, cast into the mold, and standing at 80 ° C...

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Abstract

The invention discloses an IPDI type transparent high-strength polyurethane board and a preparation method thereof, and belongs to the field of polyurethane boards. The IPDI type transparent high-strength polyurethane board and the preparation method thereof can effectively improve optical stability and chemical resistance of a polyurethane board finished product through use of IPDI, so that the transparency is higher, and the hardness is higher. Meanwhile, in the preparation process, under the action of centrifugal force, the extension extreme temperature zone transversely extends, the extension ball rod longitudinally extends, and the introduced liquid nitrogen is matched, so that the extension extreme temperature zone can be in an extremely low temperature state, local sudden temperature reduction of the material in contact with the extension extreme temperature zone can be realized, and the crystallinity of the material A in the preparation process is remarkably reduced; and therefore, the transparency of the polyurethane sheet material finished product can be effectively ensured, the yellowing rate of the polyurethane sheet material finished product can be significantly reduced so as to maintain the high transparency after the long-time use, and the use rate of the polyurethane sheet material can be significantly improved and the waste rate of the resource can be reduced compared with the prior art.

Description

Technical field[0001]The present invention relates to the field of polyurethane sheets, and more particularly to an IPDI-type transparent high intensity polyurethane sheet and a preparation method thereof.Background technique[0002]Lightweight is of great significance to energy saving, reducing pollution emissions, improve performance, and industrial health development, and the direction of modern industrial technology.[0003]At present, acrylic and PC boards are the main weight loss organic glass in the market, with good weather resistance in acrylic, PC weather resistance performance. Its performance is as follows:[0004] Performance parameters Acrylic PC board Transmittance 90%88% Tensile Strength 73MPA 68MPA Bending strength 114MPA 100MPa Shore hardness D 8565 Heat distortion temperature 105℃130℃[0005]The IPDi-type transparent high-strength polyurethane sheet has advantages of PC plate and acrylic, with excellent weather resistance, optical properties, mechanical properties, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/32C08G18/10B01F7/00
CPCC08G18/755C08G18/3206C08G18/10B01F27/0542B01F27/1162B01F2101/2805C08G18/3814C08G18/3275
Inventor 吴贲华冯飞袁厚呈孙钰晶王健邹海民张锡祥顾华
Owner JIANGSU IRON ANCHOR GLASS LTD BY SHARE LTD
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