Method for preparing environment-friendly polyurethane adhesive for plastic track

A technology of polyurethane adhesives and plastic runways, which is applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesive additives, etc., and can solve problems such as environmental pollution, adhesive performance differences, and risks for builders and users , to reduce cost, increase tensile strength and high peel strength

Inactive Publication Date: 2015-11-11
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Along with the rapid development of plastic runways, adhesives for plastic runways have been widely researched and produced. At present, there are many types of polyurethane adhesives for plastic runways on the market. There are large differences in performance, and a large part of the use will cause risks to builders and users, causing environmental pollution

Method used

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  • Method for preparing environment-friendly polyurethane adhesive for plastic track
  • Method for preparing environment-friendly polyurethane adhesive for plastic track

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 150.39g of propylene oxide polyether triol (ZS-1618A, 5000), 50.37g of polytetrahydrofuran ether glycol (PTMG1500), and 4.02g of fumed silica into a 500ml three-necked flask and stir rapidly at -0.1MPa, Carry out dehydration treatment at 100°C for 2 hours, when the temperature drops to about 45°C, add 96.57g of diphenylmethane diisocyanate (MDI-50), react naturally for 30 minutes, then slowly raise the temperature to 80°C and continue the reaction for 1 hour Finally, add 0.20 g of an organotin catalyst to continue the reaction for 1 h to obtain a polyurethane prepolymer with terminal isocyanate groups. The obtained prepolymer was cooled to 40° C., and 25.03 g of 52° chlorinated paraffin and 25.03 g of dibutyl phthalate (DBP) were added respectively, and then ultraviolet absorber UV-329 (0.9 g), UV-622 (0.9g) and antioxidant 1010 (0.6g), then stirred at high speed for 30 minutes to make them evenly mixed. Finally, vacuumize and defoam the adhesive prepared above for...

Embodiment 2

[0024]Add 153.68g of polyether triol (ZS-1618A, 5000), 51.76g of polypropylene oxide diol (PPG3000), and 2.1g of fumed silica into a 500ml three-necked flask and stir rapidly, at -0.1MPa, 110°C Under the conditions of dehydration for 3 hours, when the temperature drops to about 55°C, add 95.43g of diphenylmethane diisocyanate (MDI-50), react naturally for 40 minutes, then slowly raise the temperature to 85°C and continue the reaction for 1 hour. Add 0.16 g of organotin catalyst and continue to react for 30 minutes to prepare isocyanate-terminated polyurethane prepolymer. The obtained prepolymer was cooled to 45°C, and 25.91g of 52°C chlorinated paraffin and 25.91g of dibutyl phthalate (DBP) were added respectively, and then the ultraviolet absorber UV-329 (1.2g), UV-622 (1.2g) and antioxidant 1010 (0.8g), then stirred at high speed for 60 minutes to make them evenly mixed. Finally, vacuumize and defoam the adhesive prepared above for 23 minutes, and pass nitrogen gas into it,...

Embodiment 3

[0027] Add 151.88g of polyether triol (ZS-1618A, 5000), 78.71g of polypropylene oxide diol (PPG3000), and 4.76g of fumed silica into a 500ml three-necked flask and stir rapidly at -0.1MPa, 105°C Dehydration treatment was carried out for 2 hours under certain conditions, and when the temperature dropped to about 50°C, 99.24g of diphenylmethane diisocyanate (MDI-50) was added, and reacted naturally for 30 minutes, and then slowly raised to 80°C to continue the reaction for 1 hour. Add 0.18 g of organotin catalyst and continue to react for 1 h to obtain isocyanate-terminated polyurethane prepolymer. The obtained prepolymer was cooled to 45°C, and 27.24g of 52°C chlorinated paraffin and 27.24g of dibutyl phthalate (DBP) were added respectively, and then the ultraviolet light absorber UV-329 (1.2g), UV-622 (1.2g) and antioxidant 1010 (0.8g), then stirred at high speed for 30 minutes to make them evenly mixed. Finally, vacuumize and defoam the adhesive prepared above for 18 minutes...

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Abstract

The invention discloses a method for preparing an environment-friendly polyurethane adhesive for a plastic track. According to the method, polyether polyol and aromatic diisocyanate serve as raw materials, chlorinated paraffins and dibutyl phthalate serve as auxiliaries, white carbon black serves as packing, organotin serves as a catalyst, and the environment-friendly high-performance polyurethane adhesive for the plastic track is prepared through a prepolymer method. The prepared adhesive is moderate in system viscosity in the preparation process, the temperature can be controlled easily, and the adhesive is good in product quality, stable in performance and high in yield and room temperature bonding strength. After the adhesive is evenly mixed with rubber particles according to a certain proportion and compressed, a sample is very excellent in mechanical property, and the surface drying time and curing time are short. The adhesive is low in volatility, non-toxic and free of pungent smell, does not cause damage to constructors and users, is good in breathability and conforms to the environmental protection and construction requirements.

Description

technical field [0001] The invention relates to a preparation method of a polyurethane adhesive for an environment-friendly plastic runway, and belongs to the field of adhesive preparation. Background technique [0002] Polyurethane adhesives are polyaddition organic diisocyanates or polyisocyanates and dihydroxy or polyhydroxy compounds. The main chain contains carbamate groups and isocyanate groups. It is a type of adhesive with high polarity and activity. my country's polyurethane adhesive products started in the 1980s. Since the reform and opening up, along with the development of my country's economy and to meet the rapidly growing demand of the domestic market, the production of polyurethane adhesives in my country has increased significantly. By changing the types of raw materials and adjusting the ratio of raw materials, polyurethane adhesives with different properties can be designed, which have a wide range of applications, high bonding strength, simple bonding pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/08C09J11/06C08G18/76C08G18/48
Inventor 李娟张时涛
Owner YANCHENG INST OF TECH
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