Environment-friendly polyurethane adhesive used for bonding granulated cork and preparation method thereof

A technology of polyurethane adhesives and cork particles, applied in the direction of polyurea/polyurethane adhesives, adhesive types, non-polymer adhesive additives, etc., can solve problems such as irritating odor, harmful to human health, etc., and achieve high-quality products The effect of excellent performance and shortened mold opening time

Active Publication Date: 2013-01-16
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the enhancement of people's awareness of environmental protection and the advancement of science and technology, the shortcomings of TDI cork adhesives are gradually exposed: it has a pungent smell and is harmful to human health.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 15 grams of polyether polyol DL-2000 (2-functionality, molecular weight 2000) and 15 grams of polyether polyol DL-3000 (2-functionality, molecular weight 3000) into a three-necked bottle at room temperature, and raise it to 80°C- Stir at 100°C, vacuumize, dehydrate and degas until the moisture is qualified (≤0.05%), cool down to 10-40°C, add 35 grams of MDI, 32 grams of carbodiimide-modified MDI, 10 ppm of polymerization inhibitor, and 1010 of anti-aging agent: 3 g, react at 80-85°C for 1.5-2.5 hours, cool down to 30-50°C, and bottle.

[0017] When used, the adhesive is mixed with cork particles in a ratio of 1:10.

Embodiment 2

[0019] Add 10 grams of polyether polyol (DL-3000), 5 grams of polyether polyol (DL-2000) and 5 grams of polyether polyol (MN-3050) into a three-necked bottle at room temperature, and raise the temperature to 80°C-100°C Stir under vacuum, dehydrate and degas until the moisture is qualified, lower the temperature to 10-40°C, add 38 grams of MDI, 40 grams of carbodiimide-modified MDI, 10 ppm of polymerization inhibitor, anti-aging agent (BHT): 2 grams, 80 React at -85°C for 1.5-2.5 hours, cool down to 30-50°C, and bottle.

[0020] When used, the glue is mixed with cork particles in a mass ratio of 1:10.

Embodiment 3

[0022] Add 30 grams of polyether polyol (MN-3050) into a three-necked bottle at room temperature, stir at 80°C-100°C, vacuumize and dehydrate until the water is qualified, then cool down to 10-40°C, add 30 grams of MDI, and carbonize Diimine-modified MDI 39 grams, polymerization inhibitor 10 ppm, anti-aging agent (BHT): 1 gram, react at 80-85 °C for 1.5-2.5 hours, cool to 30-50 °C, and bottle.

[0023] When used, the adhesive is mixed with cork particles in a mass ratio of 1:8.

[0024] cork products

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PUM

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Abstract

The invention relates to an environment-friendly polyurethane adhesive used for bonding a granulated cork. The invention is characterized in that the environment-friendly polyurethane adhesive consists of MDI, modified MDI, polyether glycol, an antiaging agent and a polymerization inhibitor; according to the mass percentage, the proportion of the MDI, the modified MDI, the polyether glycol and the antiaging agent is 20-30:30-40:30-40:1-5, and the addition of the polymerization inhibitor is 10PPM. When in use, the adhesive and the granulated cork are mixed according to the mass proportion of 1:10-1:5. The adhesive is inodorous and environmentally friendly and can be used at different seasons. When the adhesive is used for bonding the granulated cork, the mold opening time is greatly shorter than the TDI adhesive, and the product property is good.

Description

technical field [0001] The invention belongs to the field of polyurethane adhesives, in particular to an environment-friendly polyurethane adhesive for bonding cork particles and a preparation method thereof. Background technique [0002] At present, with the development of the economy and the improvement of people's consumption level, many cork products that were originally mainly exported are becoming more and more common in domestic households, such as cork flooring, cork ornaments, cork paper, etc. However, the polyurethane adhesives currently used in the market for bonding cork particles are generally TDI-type, and there are many free TDIs. TDI type cork adhesive has the characteristics of low viscosity, easy production, good product flexibility and moderate hardness, so it has always been favored, especially in the fields of cork sticks, cork paper and other products. However, with the enhancement of people's awareness of environmental protection and the advancement o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08C09J11/06
Inventor 孙清峰李健鞠伟坦
Owner SHANDONG INOV POLYURETHANE
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