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High-strength polyurethane film for laminated glass and preparation method thereof

A technology of polyurethane film and laminated glass is applied in the preparation of high-strength polyurethane film. high intensity effect

Inactive Publication Date: 2013-02-27
ZHEJIANG DECENT PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent No. CN98110958.6 discloses a film for safety glass. Its main method is to heat and melt polyurethane, acrylic and epoxy resin and then make it in a specific mixing equipment, which improves the adhesion between reinforced glass and PC / PET. knot; Chinese patent CN200580035278.1 describes some methods for preparing polyurethane with good transparency, but the processing methods described inside all adopt the casting form to obtain transparent polyurethane elastomer, which cannot be used as adhesive; Chinese patent CN101760143A mentions a kind of high-transparency polyurethane hot-melt film that can be used for laminated glass and its preparation method, but its described polyurethane film strength is low

Method used

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  • High-strength polyurethane film for laminated glass and preparation method thereof
  • High-strength polyurethane film for laminated glass and preparation method thereof
  • High-strength polyurethane film for laminated glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1. Vacuum dehydrate 140kg of polyester polyol (molecular weight: 2000) and 9kg of small molecule chain extender at 100-120°C for about 2 hours to make the moisture content less than 0.05%.

[0023] Wherein: polyester polyol is polybutylene adipate diol prepared by condensation of adipic acid and 1,4-butanediol; its reaction chemical equation is as follows:

[0024]

[0025] Among them, nHOOC-R-COOH corresponds to HOOC-(CH2)4-COOH (adipic acid)

[0026] HO-R'-OH corresponds to HO-CH2CH2CH2CH2-OH (1,4-butanediol)

[0027] Step 2, the polyester polyol described in step 1, the small molecule chain extender and 40kg diphenylmethane-4,4'-diisocyanate (MDI), 0.02kg catalyst (0.01kg dibutyltin dilaurate and 0.01kg triethylenetriamine), 1.0kg antioxidant, 4kg compound UV absorber (1.5kg di(2,2,6,6-tetramethyl-4-piperidinyl) sebacate and 2.5kg 2-(2-hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole) were added to the twin-screw extruder in parts by weight (screw spe...

Embodiment 2

[0030] Step 1. Vacuum dehydrate 134kg of polyester polyol (molecular weight: 2000) and 15kg of small molecule chain extender at 100-120°C for about 2 hours to make the moisture content less than 0.05%.

[0031] Step 2, the polyester polyol described in step 1, the small molecule chain extender and 51.5kg diphenylmethane-4,4'-diisocyanate (MDI), 0.02kg catalyst (0.01kg dibutyltin dilaurate and 0.01kg triethylenetriamine), 1.0kg antioxidant, 4kg compound UV absorber (1.5kg di(2,2,6,6-tetramethyl-4-piperidinyl) sebacic acid Esters and 2.5kg 2-(2-hydroxyl-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole) were added to the twin-screw extruder in parts by weight (screw speed between 70-90rpm ) to mix and react. The temperature of the feeding section of the extruder is controlled at 100-140°C, the temperature of the reaction zone is controlled at 150-200°C, the temperature of the extrusion zone is controlled at 160-210°C, the reaction time is 5-10 minutes, and finally the organic head...

Embodiment 3

[0034]Step 1. Vacuum dehydrate 132kg of polyester polyol (molecular weight: 2000) and 14kg of small molecule chain extender at 100-120°C for about 2 hours to make the moisture content less than 0.05%.

[0035] Step 2, the polyester polyol described in step 1, small molecule chain extender and 36kg1,6-hexamethylene diisocyanate (HDI), 0.02kg catalyst (0.01kg dibutyltin dilaurate and 0.01kg triethylene Triamine), 1.0kg antioxidant, 4.0kg complex UV absorber (1.5kg di(2,2,6,6-tetramethyl-4-piperidinyl) sebacate and 2.5kg 2 -(2-Hydroxy-3,5-dibutyl-tert-phenyl)-5-chlorobenzotriazole) is added in parts by weight into a twin-screw extruder (screw speed is between 70-90rpm) for mixing and reaction. The temperature of the feeding section of the extruder is controlled at 100-140°C, the temperature of the reaction zone is controlled at 150-200°C, the temperature of the extrusion zone is controlled at 160-210°C, the reaction time is 5-10 minutes, and finally the organic head extrudes the ...

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Abstract

The invention discloses a high-strength polyurethane film for laminated glass. The high-strength polyurethane film is prepared with the following raw materials by weight percentage: 50-75 percent of polyester polyol with the molecular weight of 2000, 4-10 percent of small-molecule chain extender; 18-35 percent of diisocyanate, 0.01-0.2 percent of catalyst, 0.2-1 percent of antioxidant and 1.5-2.5 percent of complex type ultraviolet light absorber. The preparation method of the high-strength polyurethane film for the laminated glass comprises the steps of vacuum dewatering of the polyester polyol and the small-molecule chain extender until the water content is less than 0.05 percent; addition of all the raw materials into a twin-screw extruder, mixing, reaction, extrusion for granulation, and cooling to obtain transparent polyurethane granules; and addition of the transparent polyurethane granules into the twin-screw extruder for extrusion, casting, cooling and slitting of extrudate, and rolling to obtain the high-strength polyurethane film. After being bonded with glass, the high-strength polyurethane film cannot be easily broken by external strong impact forces. Moreover, the high-strength polyurethane film has the advantages of high strength and high ultraviolet resistance.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polymer materials, and in particular relates to a high-strength polyurethane film used for laminated glass. At the same time, the invention also relates to a preparation method of the high-strength polyurethane film. Background technique [0002] Thermoplastic polyurethane (TPU) is a translucent film that not only has the rubber characteristics of high strength and high wear resistance of cross-linked polyurethane, but also has the thermoplastic properties of linear polymer materials, so that its application can be extended to the field of plastics. Especially in recent decades, TPU has become one of the fastest growing polymer materials. TPU film is an important application form of TPU material. In recent years, it has been more and more widely used with the development and progress of high technology. [0003] TPU is a translucent film with no impurities and good flexibility. The surface...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/32C08K5/134C08K5/3435C08L75/06B29C47/92C03C27/12B29C48/92
CPCB29C48/04B29C48/08B29C48/40
Inventor 陈庚朱立疆叶卫民巩胜男
Owner ZHEJIANG DECENT PLASTIC
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