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Self-antibacterial type high-bonding strength melamine resin adhesive and preparation method thereof

A melamine, adhesive strength technology, applied in the direction of adhesive types, aldehyde/ketone condensation polymer adhesives, adhesives, etc., can solve the problems of mildew deterioration, water absorption and swelling, and achieve excellent water resistance and extremely low formaldehyde release. , The effect of good wear resistance

Inactive Publication Date: 2019-11-15
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the wood-based panels produced by melamine resin glue are prone to problems such as mildew and deterioration, water absorption and swelling during use, so there is an urgent need to develop an antibacterial antibacterial agent while ensuring that the adhesive strength of melamine resin glue remains unchanged or even improved. The melamine resin glue with mildew resistance and high bonding strength is extremely important

Method used

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  • Self-antibacterial type high-bonding strength melamine resin adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of self-antibacterial type high adhesive strength melamine resin glue, its preparation process is as follows:

[0028] a. Put 60.0 parts of 37.0% formaldehyde, 16.0 parts of urea, 2.0 parts of acrylamide, 10.0 parts of melamine, and 2.2 parts of polyvinyl alcohol into the reaction kettle in order according to the weight of the formula. Adjust the pH value of the mixture to 7.5-8.0, raise the temperature to 68°C, and keep it warm for 30 minutes;

[0029] b. Cool down to 63°C, add 0.2 parts of ammonium chloride aqueous solution dropwise every 5 minutes, stir evenly, and check the pH value until the pH value of the mixture is adjusted to 4.5, continue the reaction for 10 minutes; then slowly add 0.5 parts of sodium hydroxide aqueous solution dropwise Adjust the pH value of the reaction mixture to 7.2 to 8.0, and at the same time raise the temperature to 78°C, add 5.0 parts of silane coupling agent, 8.0 parts of urea and 10.0 parts of melamine to continue the reactio...

Embodiment 2

[0032] A kind of self-antibacterial type high adhesive strength melamine resin glue, its preparation process is as follows:

[0033] a. Put 56.0 parts of 36.5% formaldehyde, 14.0 parts of urea, 8.0 parts of acrylamide, melamine, and 1.8 parts of polyvinyl alcohol into the reaction kettle in order according to the weight of the formula. Adjust the pH value to 7.5-8.0, raise the temperature to 66°C, and keep it warm for 40 minutes;

[0034] b. Cool down to 62°C, add 0.2 parts of ammonium chloride aqueous solution dropwise every 5 minutes, stir evenly, and check the pH value until the pH value of the mixture is adjusted to 4.5, continue the reaction for 10 minutes; then slowly add 0.4 parts of sodium hydroxide aqueous solution dropwise Adjust the pH value of the reaction mixture to 7.2-8.0 in 2 parts, and raise the temperature to 76°C at the same time, add 6.2 parts of silane coupling agent, 7.0 parts of urea and 8.0 parts of melamine to continue the reaction for 15-20 minutes, a...

Embodiment 3

[0037] A kind of self-antibacterial type high adhesive strength melamine resin glue, its preparation process is as follows:

[0038] a. Put 65.0 parts of 36.0% formaldehyde, 18.0 parts of urea, 2.2 parts of acrylamide, 9.5 parts of melamine and 3.5 parts of polyvinyl alcohol into the reaction kettle in sequence according to the weight of the formula. Adjust the pH value of the mixture to 7.5-8.0, raise the temperature to 70°C, and keep it warm for 30 minutes;

[0039]b. Cool down to 62°C, add 0.2 parts of ammonium chloride aqueous solution dropwise every 5 minutes, stir evenly, and check the pH value until the pH value of the mixture is adjusted to 4.5, continue the reaction for 10 minutes; then slowly add 0.6 parts of sodium hydroxide aqueous solution dropwise Adjust the pH value of the reaction mixture to 7.2 to 8.0, and at the same time raise the temperature to 76°C, add 6.6 parts of silane coupling agent, 9.0 parts of urea and 9.5 parts of melamine to continue the reaction...

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Abstract

The invention relates to a self-antibacterial type high-bonding strength melamine resin adhesive and a preparation method thereof. The adhesive comprises the following constitution components in partsby weight: 40.0-85.0 part of formaldehyde, 20.0-40.0 parts of urea, 15.0-25.0 parts of hydrazine hydrate, 10.0-25.0 parts of melamine, 0.2-0.8 part of a sodium hydroxide solution, 0.4-2.0 parts of anammonium chloride solution, 3.0-8.0 parts of a silane coupling agent, 5.0-10.0 parts of N,N,N-triethyl-N-(3-formyl-4-hydroxyl benzyl) ammonium chloride quaternary ammonium salt, 1.0-4.0 parts of polyvinyl alcohol, 0.5-3.0 parts of acrylamide and 4.0-10.0 parts of ammonium hydroxide. The self-antibacterial type high-bonding strength melamine resin adhesive provided by the invention has good and long-lasting antibacterial property, high in bonding strength, very low in formaldehyde release, good in wearing resistance, excellent in water resistance, good in aging resistance, good in chemical drug resistance, and the like, needs no external antibacterial agents and is long-lasting in antibacterial effect.

Description

technical field [0001] The invention relates to a modified melamine resin glue, in particular to a self-antibacterial high-adhesion strength melamine resin glue and a preparation method thereof, belonging to the field of polymer synthetic materials. Background technique [0002] Wood-based panels are boards made of wood or other non-wood plants as the main raw material and processed by adding adhesives. At present, the most commonly used adhesive for wood-based panels is urea-formaldehyde resin or modified urea-formaldehyde resin. The production process of urea-formaldehyde resin is simple and convenient, and the cost is low, but its water resistance and adhesive strength are low, so only the modified urea-formaldehyde resin can better meet the market demand. [0003] In recent years, with the development of science and technology and the improvement of people's living standards, people have higher and higher requirements for hygiene and health, and people have begun to pay...

Claims

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Application Information

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IPC IPC(8): C09J161/32C08G12/40
CPCC08G12/40C09J161/32
Inventor 张武康伦国姚东生
Owner UNION FOSHAN CHEM
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