Method for producing flame-retardant glued board

A production method and technology of plywood, applied in the field of plywood, can solve the problems of high flame retardant level, high density, low flame retardant level, etc., and achieve the effect of low flame retardant treatment cost, simple production process, and good flame retardant performance

Active Publication Date: 2009-04-22
DEHUA TB NEW DECORATION MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former is characterized by a high level of flame retardancy, the highest level can reach the non-combustible level, but the density is much higher than that of ordinary plywood, and its mechanical properties are poor, and its application is greatly limited; the latter is characterized by a simple and mature process, which does not affe

Method used

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  • Method for producing flame-retardant glued board
  • Method for producing flame-retardant glued board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Put the 1.7mm poplar veneer into the flame retardant aqueous solution (the flame retardant is composed of the following mass ratio components: 50 parts of ammonium oligophosphate, 15 parts of ammonium phosphate, 5 parts of ammonium pyrophosphate, 5 parts of urea phosphate , boric acid 10 parts, pentaerythritol 15 parts), flame retardant temperature 50 ℃, concentration 50%, take out after soaking for 30 minutes, balance the moisture content to 20% under natural conditions, and dry it with a mesh belt dryer to a moisture content of 8 %.

[0033] Mixed adhesive: take 100 parts of melamine resin glue, add 60 parts of talcum powder to the melamine resin glue, add 0.5 part of curing agent ammonium chloride, and mix well to obtain a mixed adhesive.

[0034] Use the above mixed adhesive to glue the veneer, the amount of glue is 400g / m 2 . The 0.65mm Okoume veneer is placed on the top and bottom of the poplar veneer to form a slab. The slab is put into a cold press for 30 minu...

Embodiment 2

[0038] Put the 2.6mm miscellaneous wood veneer into the flame retardant aqueous solution (the flame retardant is composed of the following mass ratio components: 62 parts of ammonium oligophosphate, 8 parts of ammonium phosphate, 5 parts of ammonium pyrophosphate, 5 parts of urea phosphate , 5 parts of boric acid, 15 parts of pentaerythritol), flame retardant temperature 50 ℃, concentration 35%, take out after soaking for 50 minutes, balance the moisture content to 20% under natural conditions, and dry it with a mesh belt dryer to a moisture content of 8 %.

[0039] Mixed adhesive: take 100 parts of melamine resin glue, add 60 parts of talcum powder to the melamine resin glue, add 0.5 part of curing agent ammonium chloride, and mix well to obtain a mixed adhesive.

[0040] Use the above mixed adhesive to glue the veneer, the amount of glue is 400g / m 2 . The 0.65mm Okoume veneer is placed on the top and bottom of the miscellaneous wood veneer to form a slab. The slab is put i...

Embodiment 3

[0044] Put the 1.7mm eucalyptus veneer into the flame retardant aqueous solution (the flame retardant is composed of the following mass ratio components: 60 parts of ammonium oligophosphate, 10 parts of ammonium phosphate, 8 parts of ammonium pyrophosphate, 7 parts of urea phosphate , 5 parts of boric acid, 10 parts of pentaerythritol), flame retardant temperature 60 ℃, concentration 25%, take out after soaking for 30 minutes, balance the moisture content to 20% under natural conditions, and dry it with a mesh belt dryer to a moisture content of 12 %.

[0045] Mixed adhesive: Take 70 parts of urea-formaldehyde resin glue and 30 parts of melamine resin glue, add 50 parts of talcum powder, add 50 parts of high clay, add 0.2 part of curing agent phosphoric acid, and 0.5 part of curing agent ammonium chloride, and mix well to obtain a mixed adhesive.

[0046] Use the above mixed adhesive to glue the veneer, the amount of glue is 650g / m 2 . The 7-layer 1.7mm eucalyptus veneer is ...

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Abstract

The invention discloses a method for producing a flame-retardant veneer plywood, which comprises the following steps: placing wood veneers into a flame retardant aqueous solution to perform dipping treatment, applying the mixed adhesive to the upper surfaces and the lower surfaces of the veneers after the veneers are dried, assembling the veneers into a plate blank according to the principle that odd layers are crossed and symmetrical with even layers, and then performing the processes of cold pressing, hot pressing, cutting edge, sanding, surface treating and the like to obtain the flame-retardant veneer plywood product the thickness of which is between 2.7 and 20 millimeters. The flame retardant in the method is a mixture of low ammonium polyphosphate, ammonium phosphate, ammonium pyrophosphate, urea phosphate, boric acid and pentaerythritol, and the mixed adhesive is a uniform mixture of wood adhesive, filler, and a curing agent. The flame-retardant decorative veneer plywood prepared by the method has the advantages of excellent flame-retardant and fireproof performance, environmental prevention performance, and good mechanical properties.

Description

(1) Technical field [0001] The invention relates to a plywood, in particular to a production method of a flame-retardant plywood. (2) Technical background [0002] With the improvement of our country's economic development and living standards, and the improvement of people's affluence, many occasions where plywood is used, such as construction, furniture, vehicles and ships, have put forward higher requirements. Most of the flame-retardant plywood on the market today is composited with inorganic materials or pasted with a fireproof skin on the plywood substrate to achieve the purpose of flame retardancy. The former is characterized by a high level of flame retardant, the highest can reach the non-combustible level, but the density is much higher than that of ordinary plywood, and its mechanical properties are poor, and its application is greatly limited; the latter is characterized by a simple and mature process, which does not affect the mechanical properties and propertie...

Claims

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Application Information

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IPC IPC(8): B27D1/04B32B21/04B27K3/52B27K5/04B27D5/00C09J161/24C09J161/28C09J161/06
Inventor 王晓辉彭晓正沈金祥
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
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