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

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...

Examples

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.

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...

Examples

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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