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Ultralow-temperature-resistant transparent polyurethane film for laminated glass and preparation method thereof

A technology of laminated glass and polyurethane, applied in the direction of polyurea/polyurethane adhesive, film/sheet without carrier, adhesive, etc., can solve the problems of decreased bonding strength, degumming of laminated glass, etc., and achieve bonding strength that meets, High optical transparency and improved safety in use

Pending Publication Date: 2021-11-19
锦西化工研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bonding properties of the film are the basis of the safety properties of laminated glass. However, there is a problem of debonding in laminated glass, and the bonding strength will decrease under the condition of too low temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Heat up 105g of polytetrahydrofuran ether diol (molecular weight: 1000) to 110-120°C, vacuumize for 1.5hr, then cool down to 65°C, add catalysts such as 0.03g of dibutyltin dilaurate, 10.5g of 1,4-butanediol, ethylene glycol 4.8 g of alcohol, 79.29 g of 4,4′-dicyclohexyl diisocyanate, 0.20 g of Irganox1010, and 0.20 g of UV-9 were injected into the mold (groove on one side of the polytetrafluoroethylene plate) after vacuuming for 6 minutes. Put the mold in an oven at 80°C to dry for 24 hours, then raise the temperature of the oven to 100°C and dry for 24 hours, then take out the film. The film is sampled, the sample size is 5mg to 20mg, and the sample is tested according to GB / T19466.2-2004 (determination of glass transition temperature) and GB / T 2410-2008.

Embodiment 2

[0021] Heat up 105g of polytetrahydrofuran ether diol (molecular weight: 1000) to 110-120°C, vacuumize for 1.5hrs, then cool down to 65°C, add catalyst dibutyltin dilaurate 0.03g, ethylene glycol 12.45g, isophorone diisocyanate 71.25g, 0.19g Irganox1010, 0.19g UV-9, vacuumize and react for 6 minutes and inject into the mold (one-sided groove of polytetrafluoroethylene plate). Put the mold in an oven at 80°C to dry for 24 hours, then raise the temperature of the oven to 100°C and continue drying for 24 hours, then take out the film. The film is sampled, the sample size is 5mg to 20mg, and the sample performance test is carried out according to GB / T19466.2-2004 and GB / T 2410-2008.

Embodiment 3

[0023] Heat up 105g of polytetrahydrofuran ether diol (molecular weight: 1000) to 110-120°C, vacuumize for 1.5hr, then cool down to 65°C, add catalysts such as 0.03g of dibutyltin dilaurate, 10.5g of 1,4-butanediol, ethylene glycol 4.8 g of alcohol, 61.57 g of 4,4′-dicyclohexyl diisocyanate, 11.59 g of hexamethylene diisocyanate, 0.18 g of Irganox1010, 0.18 g of UV-9, evacuated for 6 minutes and injected into the mold (polytetrafluoroethylene sheet surface groove). Put the mold in an oven at 80°C to dry for 24 hours, then raise the temperature of the oven to 100°C and continue drying for 24 hours, then take out the film. The film is sampled, the sample size is 5mg to 20mg, and the sample performance test is carried out according to GB / T19466.2-2004 and GB / T 2410-2008.

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Abstract

The invention discloses an ultralow-temperature-resistant transparent polyurethane film for laminated glass and a preparation method of the ultralow-temperature-resistant transparent polyurethane film, and relates to the technical field of preparation of transparent polyurethane films. The preparation method comprises the following steps: 1, heating polytetrahydrofuran ether diol to 110-120 DEG C, and vacuumizing for 1.5 hours to dehydrate; 2, after dehydration, cooling to 60-80 DEG C, adding a catalyst, a small molecule chain extender and diisocyanate, and carrying out a vacuum-pumping reaction for 5-10 min; and 3, pouring the liquid obtained in the step 2 into a polyfluortetraethylene plate single-sided groove mold, drying for 24 hours in a drying oven at 80-100 DEG C, heating, and continuously drying for 24 hours to prepare the transparent polyurethane film. According to the method, the reaction time is short, the curing speed is high, the prepared polyurethane film is high in optical transparency, high bonding strength can be kept at the low temperature of-65 DEG C, the bonding firmness of laminated glass is guaranteed, and the use safety of the laminated glass is improved.

Description

technical field [0001] The invention relates to the technical field of transparent polyurethane film preparation, in particular to an ultra-low temperature resistant transparent polyurethane film for laminated glass and a preparation method thereof. Background technique [0002] Transparent polyurethane film is an ideal bonding material, and it has good bonding performance with inorganic glass, organic glass and polycarbonate. In foreign countries, transparent polyurethane film has been successfully used to laminate transparent materials. The main production companies include PPG, Bayer, Asahi, HUNTSMAN, etc., but there is no report on the industrial production of this elastomer in China. Transparent polyurethane film as a bonding layer or intermediate layer will be widely used in the production of interlayer transparent materials, such as aviation transparent parts (windshield glass, porthole glass, etc.), high-speed rail windshield glass, military (aircraft, military vehic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J175/08C08G18/66C08G18/48C08G18/32
CPCC09J7/10C09J175/08C08G18/6674C08G18/4854C08G18/3206C09J2475/00
Inventor 郑晓秋季璐王迪
Owner 锦西化工研究院有限公司
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