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Solvent-free, non-yellowing polyurethane adhesive for sports fields

A technology for polyurethane adhesives and sports venues, applied in the direction of polyurea/polyurethane adhesives, adhesive types, non-polymer adhesive additives, etc., can solve low reactivity, poor strength, adhesive storage Reduced stability and other issues, to achieve the effects of excellent mechanical properties, good storage stability, and simple preparation methods

Active Publication Date: 2015-09-02
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low reactivity and poor strength of aliphatic isocyanate adhesives, the sites or products made with them often have a slow curing speed. First of all, they cannot meet the requirements of curing within 24 hours expected by users. Meet the requirements of the national standard tensile strength and elongation, so it is difficult to guarantee the service life of the site
By increasing the amount of catalyst, although the curing speed of the product can be increased to a certain extent, the storage stability of the adhesive will be greatly reduced, and the storage stability period of the product cannot be met.

Method used

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  • Solvent-free, non-yellowing polyurethane adhesive for sports fields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The polyolefin polyol (with H 2 o 2 As an initiator, 1,2 propylene glycol is used as a solvent, and butadiene is subjected to free radical polymerization, the molecular weight is 1000, and the functionality is 2) 25 grams, polyolefin polyol (in the form of H 2 o 2 As an initiator, 1,2 propylene glycol is used as a solvent, butadiene is subjected to free radical polymerization, the molecular weight is 2000, and the functionality is 2) 15 grams, 30 grams of castor oil are added to the reaction kettle at room temperature, and stirred at 97 ° C. Dehydration and degassing at a pressure of -0.095MPa for 2.5 hours. When the water mass fraction is less than 0.05%, cool down to 88°C and add 20 grams of 1,4-cyclohexane diisocyanate and 5 grams of cyclohexane dimethylene diisocyanate. React at 85°C for 2.5 hours, add 1 g of isooctyl 3,5-tert-butyl-4-hydroxyphenylpropionate, bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacic acid 3 grams of ester, 0.8 grams of bismuth isooctanoate, ...

Embodiment 2

[0024] The polyolefin polyol (with H 2 o 2 As an initiator, 1,2 propylene glycol is used as a solvent, butadiene undergoes free radical polymerization, the molecular weight is 1000, and the functionality is 2) 30 grams, and 30 grams of castor oil are added to a three-necked bottle at room temperature, and stirred at 95 ° C. Dehydration and degassing at -0.095MPa for 3 hours, when the water mass fraction is less than 0.05%, cool down to 90°C and add 30 grams of 1,4-cyclohexane diisocyanate, react at 80°C for 3 hours, add 3,5-tert 4 grams of isooctyl butyl-4-hydroxyphenylpropionate, 4 grams of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 2 grams of bismuth isooctanoate, cooled to Bottle at 15°C.

[0025] When using, mix the glue with TPU / EPDM particles in a ratio of 1:5.

Embodiment 3

[0027] The polyolefin polyol (with H 2 o 2 As an initiator, 1,2 propylene glycol is used as a solvent, butadiene undergoes free radical polymerization, the molecular weight is 1000, and the functionality is 2) 35 grams, 25 grams of castor oil are added to a three-necked flask at room temperature, stirred at 100 ° C, ( The pressure is -0.095MPa) dehydration and degassing for 2 hours, when the water mass fraction is less than 0.05%, lower the temperature to 90°C, add 30 grams of 1,4-cyclohexane diisocyanate, 5 grams of isophorone diisocyanate, and react at 83°C After 2.7 hours, add 3 grams of isooctyl 3,5-tert-butyl-4-hydroxyphenylpropionate and 1 gram of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate , 0.65 grams of bismuth isooctanoate, 0.35 grams of N-ethylmorpholine, cooled to 15 ° C for bottling.

[0028] When using, mix the glue with TPU / EPDM particles in a ratio of 1:7.

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Abstract

The invention belongs to the field of polyurethane adhesives, and relates to a solvent-free non-yellowing type polyurethane adhesive for a sport field and a preparation method thereof. The solvent-free non-yellowing type polyurethane adhesive is prepared from isocyanate, polyolefine polyalcohol, castor oil, an antioxidant, a light stabilizer and a catalyst in a mass ratio of (25-35):(30-40):(20-30):(1-4):(1-4):(1-2). The invention relates to the solvent-free non-yellowing type polyurethane adhesive for the sport field and the preparation method thereof. The solvent-free non-yellowing type polyurethane adhesive disclosed by the invention has the characteristics of odorlessness, no yellowing, environmental friendliness, moderation in curing speed, no deformation, good storage stability and excellent mechanical property.

Description

technical field [0001] The invention belongs to the field of polyurethane adhesives, and relates to a solvent-free, non-yellowing polyurethane adhesive used for sports grounds and a preparation method thereof. Background technique [0002] At present, with the development of the economy and the improvement of people's consumption level, there are more and more sports and leisure venues in schools, communities, and parks, such as swimming pools, gyms, and jogging areas in parks. Sports venues have also developed from meeting people's daily sports needs to high-end, personalized, and high-comfort aspects. For example, the bottom of a swimming pool is generally made of ceramic tiles, which are often hard and smooth. Especially after soaking in water, a smooth water film is easy to form on the surface, which can easily cause swimmers to slip when standing, posing potential dangers. Therefore, it has become a fashion trend to replace traditional ceramic tiles with a material tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J11/06C08G18/75C08G18/69C08G18/67
Inventor 孙清峰李立强鞠伟坦王玉霞代金辉
Owner SHANDONG INOV POLYURETHANE
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