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Highly-transparent polyurethane hot-melt film applicable to sandwich glass and preparation method thereof

A polyurethane hot-melt and hot-melt film technology, applied in polyurea/polyurethane adhesives, chemical instruments and methods, glass/slag layered products, etc., can solve problems such as failure to use adhesives, and achieve easy control and production The effect of simple process and good adhesion

Active Publication Date: 2010-06-30
GUANGZHOU LUSHAN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are many reports for preparing polyurethane with good transparency, such as U.S. Patent US6222999, US6174984 and Chinese patent CN200580035278.1 all describe some methods for preparing polyurethane with good transparency, but these technologies only It involves polyurethane elastomers that are casted to obtain transparency and cannot be used as adhesives

Method used

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  • Highly-transparent polyurethane hot-melt film applicable to sandwich glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 100Kg of polytetrahydrofuran diol with a molecular weight of 2000 and 50Kg of polyoxypropylene diol with a molecular weight of 2000 were dehydrated under vacuum at 120°C for 2 hours to make the moisture content less than 0.05%.

[0033] Mix the above-mentioned just dehydrated polyol mixture with 0.8Kg catalyst (a mixture of 0.4Kg dibutyltin dilaurate and 0.4Kg triethylamine), 1Kg antioxidant 1010, 1Kg optical stabilizer UV328, and then mix it with 34Kg MDI flows continuously into the twin-screw extruder for mixing and reaction at a ratio of 4.5:1. When the material flows through the middle of the extruder, start to add the dehydrated mixed chain extender at a ratio of 10:1 of the actual flow rate. agent (7Kg methylpropanediol, 7Kg1,6-hexanediol), 2.4Kg coupling agent KH560, 0.8Kg catalyst (mixture of 0.4Kg dibutyltin dilaurate and 0.4Kg triethylamine), screw speed 70 rev / The temperature in the feeding zone is 120°C, the temperature in the reaction zone is 190°C, and th...

Embodiment 2

[0035] 176Kg of polytetrahydrofuran diol with a molecular weight of 2000 was vacuum dehydrated at 120°C for 2 hours to make the moisture content less than 0.05%.

[0036] Mix the above-mentioned freshly dehydrated polyol mixture with 0.8Kg catalyst (a mixture of 0.4Kg dibutyltin dilaurate and 0.4Kg triethylamine), 1Kg antioxidant 245, 1Kg optical stabilizer UV9, and then mix it with 20Kg IPDI flows continuously into the twin-screw extruder for mixing and reaction at a ratio of 8.8:1. When the material flows through the middle of the extruder, add the dehydrated mixed chain extender at a ratio of 37.8:1 of the actual flow rate. agent (1Kg methylpropanediol and 2Kg 1,6-hexanediol), 2Kg coupling agent KH550, 0.2Kg catalyst (mixture of 0.1Kg dibutyltin dilaurate and 0.1Kg triethylamine), screw speed 80 rpm The temperature in the feeding zone is 120°C, the temperature in the reaction zone is 170°C, and the temperature in the extrusion zone is 190°C. Finally, it is extruded, cooled...

Embodiment 3

[0038] 80Kg of polyoxypropylene diol with a molecular weight of 1000 was vacuum dehydrated at 120° C. for 2 hours to make the moisture content less than 0.05%.

[0039]Mix the above-mentioned just dehydrated polyol mixture with 0.8Kg catalyst (a mixture of 0.4Kg dibutyltin dilaurate and 0.4Kg triethylamine), 2Kg antioxidant 1010, 2Kg optical stabilizer UV327, and then mix it with 66Kg HDI continuously flows into the twin-screw extruder for mixing and reaction at a ratio of 1.28:1. When the material flows through the middle of the extruder, start to add the dehydrated mixed chain extender ( 4Kg methylpropanediol and 36Kg dipropylene glycol), 9Kg coupling agent A-172, 0.2Kg catalyzer (the mixed solution of 0.1Kg dibutyltin dilaurate and 0.1Kg triethylamine), screw speed 80 revs / min, feed intake The zone temperature is 110°C, the reaction zone temperature is 180°C, and the extrusion zone temperature is 190°C. Finally, it is extruded, cooled and granulated for later use, and the ...

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Abstract

The invention discloses a highly-transparent polyurethane hot-melt film applicable to sandwich glass. The hot-melt film consists of the following materials by weight percent: 40.0-86.0% of polyether polyol, 1.5-20.0% of small molecule chain extender, 10.0-33.0% of diisocyanate; 0.01%-0.50% of catalyst, 0.1-1.0% of antioxidant, 0.1-1.0% of optical stabilizer and 1.0-4.5% of coupling agent. The invention also discloses a preparation method of the highly-transparent polyurethane hot-melt film. The highly-transparent polyurethane hot-melt film prepared according to the invention performs well in terms of agglutinating glass and PC panels, has high light transmission rate and low dimness. In addition, the preparation process of the highly-transparent polyurethane hot-melt film is simple and easy to control. The highly-transparent polyurethane hot-melt film can be widely used in automobile, aviation, architecture, financial and other industries.

Description

technical field [0001] The invention relates to a high-transparency polyurethane hot-melt film with good adhesion to glass and PC boards, and a method for preparing the high-transparency polyurethane hot-melt film. Background technique [0002] Laminated glass is a kind of decorative glass that integrates decoration and safety, and has broad application prospects. It can not only protect personal and property safety, but also keep the glass beautiful and transparent. At the same time, you can choose the pattern of the decorative film according to your preferences, and has a wide range of applications. [0003] At present, the interlayer bonding material widely used in my country's laminated glass industry is polyvinyl butyral film (PVB film). PVB film can effectively bond inorganic glass in a wide temperature range, but it is not compatible with polycarbonate ( PC) boards, PET boards, etc. have low bonding strength, and PVB films tend to become brittle at low temperatures, a...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J175/08B32B7/12B32B17/10
Inventor 靳东杰欧阳效明唐舫成汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
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