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Flame-retardant furfural-modified urea-formaldehyde resin floor glue

A technology of urea-formaldehyde resin and floor adhesive, which is used in adhesives, aldehyde/ketone condensation polymer adhesives, monocarboxylic acid ester copolymer adhesives, etc. problem, to achieve the effect of good flame retardant effect, high oxygen index and improved flame retardant ability

Inactive Publication Date: 2015-07-22
深圳宏耐木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Urea-formaldehyde resin adhesive has many advantages, such as high bonding strength, high cold water resistance, fast curing, good miscibility with water, easy to adjust appropriate viscosity and concentration, etc. However, urea-formaldehyde resin adhesive has resistance Poor flammability, in the event of a fire, can not play a very good flame retardant effect

Method used

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  • Flame-retardant furfural-modified urea-formaldehyde resin floor glue

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Embodiment l

[0020] A kind of flame-retardant furfural modified urea-formaldehyde resin floor glue, this floor glue comprises the following components in parts by weight:

[0021] 250 parts of formaldehyde;

[0022] 120 parts of urea;

[0023] 5 parts of furfural;

[0024] 10 parts of polyvinyl acetate emulsion;

[0025] Phosphoric acid 15 parts;

[0026] 10 parts of borax.

[0027] First prepare polyvinyl acetate emulsion, the preparation method is: add polyvinyl alcohol solution with a mass fraction of 5.5% in the reactor, and add emulsifier OP-10 with 33% polyvinyl alcohol mass, stir and adjust the temperature to 60°C In the emulsion, vinyl acetate with 4.5 times the mass of polyvinyl alcohol and ammonium persulfate solution with a mass fraction of 44% of polyvinyl alcohol and 10% ammonium persulfate solution were added, the air was replaced by nitrogen, and the temperature was kept at 60°C for reflux reaction for 45min. Then raise the temperature to 85-90°C, then add ...

Embodiment 2

[0030] A kind of flame-retardant furfural modified urea-formaldehyde resin floor glue, this floor glue comprises the following components in parts by weight:

[0031] 260 parts of formaldehyde;

[0032] 124 parts of urea;

[0033] 6 parts of furfural;

[0034] 14 parts of polyvinyl acetate emulsion;

[0035] Phosphoric acid 18 parts;

[0036] 12 parts of borax.

[0037] The preparation method of flame retardant furfural modified urea-formaldehyde resin floor adhesive comprises the following steps: adding measured formaldehyde, urea and furfural into a reaction kettle, adjusting the pH value of the solution to 8.0-8.5 with sodium hydroxide solution, and raising the temperature from normal temperature to 72°C, heat preservation reaction for 53 minutes; after the heat preservation reaction, add formic acid solution to adjust the pH value of the reaction to 5.2, measure the viscosity, when the viscosity reaches 22-25 Pa.s, add formic acid solution to adjust the reaction pH va...

Embodiment 3

[0039] A kind of flame-retardant furfural modified urea-formaldehyde resin floor glue, this floor glue comprises the following components in parts by weight:

[0040] 270 parts of formaldehyde;

[0041] 125 parts of urea;

[0042] 7 parts of furfural;

[0043] 18 parts of polyvinyl acetate emulsion;

[0044] Phosphoric acid 20 parts;

[0045] 14 parts of borax.

[0046] The preparation method of the present invention comprises the following steps: adding metered formaldehyde, urea, and furfural into the reaction kettle, adjusting the pH value of the solution to 8.0-8.5 with sodium hydroxide solution, raising the temperature from normal temperature to 70°C, and holding the reaction for 55 minutes After the heat preservation reaction finishes, add formic acid solution to adjust the pH value of the reaction to be 5.2, and measure the viscosity. When the viscosity reaches 22 to 25 Pa.s, add formic acid solution to adjust the pH value of the reaction to be 6.0, add the m...

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Abstract

The invention discloses flame-retardant furfural-modified urea-formaldehyde resin floor glue which comprises the following components in parts by weight: 250-280 parts of formaldehyde, 120-130 parts of urea, 5-8 parts of furfural, 10-20 parts of polyvinyl acetate emulsion, 15-20 parts of a flame retardant A, and l0-15 parts of a flame retardant B. A preparation method of the floor glue comprises the following steps: adding measured formaldehyde, urea and furfural into a reaction kettle to obtain a solution, adjusting the PH value of the solution to be 8.0-8.5 with a sodium hydroxide solution, raising the temperature from room temperature to 70-75 DEG C, performing thermal reaction for 50-55 min; adding a formic acid solution to adjust the PH value of the reaction to be 5.2-5.5 after the thermal reaction, measuring the viscosity, when the viscosity reaches 22-25 Pa.s, adding the formic acid solution to adjust the PH value of the reaction to be 6.0, adding a measured polyvinyl acetate emulsion, raising the temperature to 85-90 DEG C, adding the measured flame retardant A after 10 min, performing thermal reaction for 70-75 min; then adding the measured flame retardant B, stirring the solution uniformly and performing reaction for 30-35 min and cooling to room temperature to obtain the flame-retardant furfural-modified urea-formaldehyde resin floor glue.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a flame-retardant furfural-modified urea-formaldehyde resin floor adhesive and a preparation method thereof. Background technique [0002] With the development of China's economy and the improvement of people's living standards, the requirements for home decoration are also constantly increasing. Because of its natural and beautiful texture and good texture, wooden floor has become the first choice material for home floor decoration. The solid wood composite floor overcomes the disadvantages of solid wood floor swelling and shrinkage, has good dimensional stability, and at the same time retains the natural wood grain and comfortable foot feeling of the solid wood floor, thus becoming an important variety in the floor, producing solid wood composite floor The amount of urea-formaldehyde resin floor glue used has also increased. Urea-formaldehyde resin or modified urea-formal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/32C09J131/04C09J11/04C08G12/40C08G12/12
Inventor 马昭键胡磊磊马昭星李珠肖彭鸿贰苏燕何晓荣苏文雪
Owner 深圳宏耐木业有限公司
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