Chemical agent with adhesiveness and flame resistance, and preparation method thereof

A dual-function, chemical agent technology, applied in the direction of adhesives, adhesive types, aldehyde/ketone condensation polymer adhesives, etc., to achieve long-lasting flame-retardant effects, convenient use, and good loss resistance

Inactive Publication Date: 2013-12-11
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no chemical agent with both gluing and flame retardant functions applied to the wood-based panel production process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] ① Weigh raw materials: 90g phosphoric acid, 600g formaldehyde, 56g urea, 233g dicyandiamide and 500g diammonium hydrogen phosphate.

[0026] ②Put formaldehyde into a 2000ml four-neck flask, install a stirrer, a thermometer and a condenser tube, and adjust the pH of the formaldehyde solution to 8 with a 30% NaOH aqueous solution.

[0027] ③Heat the formaldehyde solution to 80°C at a heating rate of 1°C / min, add the mixture of urea and dicyandiamide, and keep stirring for 30 minutes.

[0028] ④ Cool down to 55°C, slowly add diammonium hydrogen phosphate, keep stirring for 30 minutes.

[0029] ⑤ Cool down to 30°C, slowly add phosphoric acid, and discharge after stirring for 5 minutes to obtain 1470g of a liquid product of a chemical agent with dual functions of gluing and flame retardancy, with a solid content of 51.2%.

[0030] ⑥Add this liquid to the wood fiber raw material with a moisture content of 4-6% by spraying method (the amount added is the solid mass of the che...

Embodiment 2

[0033] ① Weigh raw materials: phosphoric acid 76g, formaldehyde 600g, urea 37g, dicyandiamide 155g and diammonium hydrogen phosphate 300g.

[0034] ②Put formaldehyde into a 2000ml four-neck flask, install a stirrer, thermometer and condenser tube, and adjust the pH value of the formaldehyde solution to 9 with a 30% NaOH aqueous solution.

[0035] ③Heat the formaldehyde solution to 90°C at a heating rate of 1°C / min, add the mixture of urea and dicyandiamide, and keep stirring for 30 minutes.

[0036] ④ Cool down to 60°C, slowly add diammonium hydrogen phosphate, keep stirring for 30 minutes.

[0037] ⑤ Cool down to 20°C, slowly add phosphoric acid, stir for 5 minutes and discharge to obtain a clear liquid.

[0038] ⑥Use a spray dryer to evaporate and dry the above-mentioned liquid into granular objects, and then use a pulverizer to crush the granular objects to 100-250 meshes, and then obtain 607g of chemical agent solid products with dual functions of gluing and flame retarda...

Embodiment 3

[0043] ① Weigh raw materials: 70g of phosphoric acid, 600g of formaldehyde, 167g of urea, 80g of dicyandiamide and 460g of diammonium hydrogen phosphate.

[0044] ②Put formaldehyde into a 2000ml four-neck flask, install a stirrer, a thermometer and a condenser, and adjust the pH of the formaldehyde solution to 8.5 with a 30% NaOH aqueous solution.

[0045] ③Heat the formaldehyde solution to 85°C at a heating rate of 1°C / min, add the mixture of urea and dicyandiamide, and keep stirring for 30 minutes.

[0046] ④ Cool down to 70°C, slowly add diammonium hydrogen phosphate, keep stirring for 30 minutes.

[0047] ⑤ Cool down to 25°C, slowly add phosphoric acid, and discharge after stirring for 5 minutes to obtain 1370g of a liquid product of a chemical agent with dual functions of gluing and flame retardancy, with a solid content of 52.4%.

[0048] ⑥Add this liquid to the wood fiber raw material with a moisture content of 4-6% by spraying method (the amount added is the solid mas...

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PUM

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Abstract

The invention discloses a chemical agent with adhesiveness and flame resistance, and a preparation method thereof. The chemical agent comprises following raw materials, by weight: 1.0 portion of urea, 0.45 to 4.2 portions of dicyandiamide, 3.6 to 16.3 portions of formaldehyde with a mass concentration of 37%, 0.4 to 2.1 portions of phosphoric acid with a mass concentration of 85%, and 2.75 to 9.0 portions of diammonium hydrogen phosphate. The chemical agent possesses both adhesiveness and flame resistance, and compatibility with urea-formaldehyde resin adhesive which is widely used in production of wood-based plate. Adhesive can be replaced by the chemical agent completely in production of wood-based plate, and be partially replaced by the chemical agent by adding the chemical agent into a prepared glue solution directly, so that it is convenient to use the chemical agent for producing of flame-retardant wood-based plate, and cost is reduced. In addition, the chemical agent possesses adhesiveness, and is excellent in leachibility, so that flame retardant effect lasts long.

Description

technical field [0001] The invention belongs to the technical field of wood-based panel production, and in particular relates to a chemical agent with dual functions of gluing and flame retardancy and a preparation method thereof. technical background [0002] Wood-based panels are usually board-shaped materials made of small wood units glued together with adhesives, and are widely used in architectural decoration and indoor furniture manufacturing. Wood is naturally flammable, especially for small wood units, so there are certain fire hazards in the use of wood-based panels, which puts forward requirements for wood-based panels to be flame-retardant. However, there is no chemical agent with both gluing and flame retardant functions applied to the wood-based panel production process. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a chemical agent with dual functions of gluing and flame retardant and its prepara...

Claims

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Application Information

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IPC IPC(8): C09J161/24C09J161/22C08G12/14C08G12/12B27D1/04
Inventor 罗建举葛浙东
Owner GUANGXI UNIV
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