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Preparation method of high-wear-resistance floor glue

A kind of floor glue, high anti-wear technology, used in chemical instruments and methods, adhesives, polymer adhesive additives, etc.

Active Publication Date: 2015-05-20
浙江可沛尔新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are relatively few reports in the literature on improving its abrasion resistance, and there is no report on improving the abrasion resistance of floors by adding modified nano-silica aqueous sols.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A. Add 269.0g formaldehyde to the five-necked flask, adjust the pH to 9.3 with 25% NaOH solution by mass percentage, add the first batch of urea 78.5g, gradually raise the temperature of the system to 70°C, and adjust the temperature to 70°C with phosphoric acid after 30 minutes of reaction. pH to 3.8, then the temperature of the feed liquid is raised to 93°C, the reaction time is controlled to 40min, then 30% NaOH solution is added to adjust the pH to 9.3, 0.1g of triethanolamine is added, and the temperature is then lowered to 80°C, and the reaction Add the second batch of urea 52.4g into the kettle, control the reaction time at 40min, cool down to 32°C after the reaction, and set it aside.

[0024] B. add 158.4g formaldehyde solution, 23.8g diethylene glycol in the five-necked flask, be that 25% NaOH solution is adjusted to pH to 10.0 with mass fraction, feed liquid temperature is warming up to 28 ℃, adds 126.7g melamine wherein, with Wash the melamine feeding contai...

Embodiment 2

[0031] A. Add 269.0g formaldehyde to the five-necked flask, adjust the pH to 8.8 with a 30% NaOH solution by mass percentage, add the first batch of urea 78.5g, gradually raise the system temperature to 70°C, and adjust the temperature to 70°C with sulfuric acid after 40 minutes of reaction. pH to 3.5, then raise the temperature of the feed solution to 85°C, control the reaction time to 40min, then add 30% NaOH solution by mass percentage to adjust the pH to 8.9, add 0.1g triethanolamine, then lower the temperature to 80°C, and add to the reaction Add the second batch of urea 52.4g into the kettle, control the reaction time at 40min, cool down to 38°C after the reaction, and set it aside.

[0032] B. add 158.4g formaldehyde solution in the five-necked flask, 23.8g diethylene glycol, be that 30% NaOH solution is adjusted to pH to 9.5 with mass fraction, feed liquid temperature is warming up to 30 ℃, adds 126.7g melamine wherein, with Wash the melamine feeding container with 87....

Embodiment 3

[0039]A. Add 269.0g formaldehyde to the five-necked flask, adjust the pH to 8.8 with a 30% NaOH solution by mass percentage, add the first batch of urea 78.5g, gradually raise the temperature of the system to 68°C, and adjust the temperature to 68°C with nitric acid after reacting for 30min. pH to 3.5, then raise the temperature of the feed solution to 85°C, control the reaction time to 40min, then add 30% NaOH solution by mass percentage to adjust the pH to 8.9, add 0.1g triethanolamine, then lower the temperature to 84°C, to the reaction Add the second batch of urea 52.4g into the kettle, control the reaction time at 40min, cool down to 40°C after the reaction, and set it aside.

[0040] B. add 158.4g formaldehyde solution in the five-necked flask, 23.8g diethylene glycol, be that 30% NaOH solution is adjusted to pH to 9.5 with mass fraction, feed liquid temperature is warming up to 30 ℃, adds 126.7g melamine wherein, with Wash the melamine feeding container with 87.1 g of w...

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Abstract

The invention discloses a preparation method of high-wear-resistance floor glue. According to the method, a modifying nano silicon dioxide hydrosol is added into mixed glue of melamine modified urea glue; and the prepared modifying nano silicon dioxide hydrosol is transparent ana clear and has obvious Tyndall phenomenon. The formaldehyde emission amount of the artificial floor board prepared by using the 0.1-10 wt% nano silicon dioxide hydrosol mixed glue reaches Grade E1 (not greater than 1.5 mg / L), and the wear resistance is enhanced by 30-50% as compared with the existing commercially-available floor boards. The technique is simple and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a preparation method of a high-wear-resistant floor glue. Background technique [0002] Urea-formaldehyde resin has the advantages of abundant and easy-to-obtain raw materials, low price, simple manufacturing process, excellent adhesion to lignocellulose, excellent cohesive strength, and no pollution to wood. In the wood-based panel industry, it accounts for 65-75% of the total amount of resin glue, and is currently the most produced variety of adhesives. However, in the practical application of urea-formaldehyde resin, there are problems such as high free formaldehyde content, poor hot water resistance, and poor wear resistance. [0003] Researchers have adopted different solutions to different problems. In order to reduce the emission of formaldehyde in urea-formaldehyde resin, the researchers optimized the process and conditions of the acidic polycondensation stage to make the methylene ether bond form that is easy to break...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J161/30C09J11/04C09J11/06C09J11/08C08G12/38B32B37/12B32B37/10B32B37/06E04F15/02
Inventor 胡锦猛姚明忠李小红曹忠飞
Owner 浙江可沛尔新材料有限公司
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