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Compound flame retardant and method for improving performance of flame-retardant plywood by adopting compound flame retardant

A technology for compounding flame retardants and flame retardants, which is used in the joining of wooden veneers, wood processing, wood processing appliances, etc. problems such as low conductivity, to achieve excellent application potential and industrial production value, good performance such as deformation resistance, and strong overall strength.

Inactive Publication Date: 2021-03-30
TREEZO NEW MATERIAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (3) Utilize the flame retardant soaking of the middle board to make the plywood use the middle board material to achieve a certain flame retardant effect, so that the entire plywood can achieve flame retardancy. The above (2) and (3) schemes are for the glue between the middle board and the middle board layer The performance is affected, the pass rate is low, and the flame retardant board has problems of gluing and elastic modulus, which cannot meet the relevant engineering requirements
In the actual use of the flame-retardant plywood, pyrographers create art on the surfaces of the first and second operating panels through devices such as spray guns that emit high-temperature flames, and the high temperature passes through the first and second operating panels to Permeation in the direction of the fixed plate, since the first insulation plate and the second insulation plate are made of silica airgel, the fine nano-network structure of silica airgel effectively limits the propagation of local thermal excitation , its solid-state thermal conductivity is 2-3 orders of magnitude lower than that of the corresponding glassy material, and has an excellent thermal insulation effect, but this patent also does not solve the problems in terms of bonding strength and elastic modulus properties

Method used

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  • Compound flame retardant and method for improving performance of flame-retardant plywood by adopting compound flame retardant
  • Compound flame retardant and method for improving performance of flame-retardant plywood by adopting compound flame retardant
  • Compound flame retardant and method for improving performance of flame-retardant plywood by adopting compound flame retardant

Examples

Experimental program
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Effect test

Embodiment 1

[0084] A method for improving the performance of flame-retardant plywood, the preparation method specifically includes the following steps:

[0085] (1) Preparation of compound flame retardant, raw materials include flame retardant, silane coupling agent and melamine modified rubber, said flame retardant: silane coupling agent: melamine modified rubber = 100:0.6:105. Specifically, the flame retardant is composed of the following raw materials in parts by weight: 13 parts of magnesium hydroxide, 25 parts of magnesium carbonate, 15 parts of zinc borate, 7 parts of ammonium polyphosphate, 15 parts of polyaryl phosphoric acid, 7 parts of acrylonitrile, benzene Ethylene 17 parts.

[0086] (2) Choose a suitable thickness of the middle board and impregnate it with a compound flame retardant; use a 1.8mm thick middle board to increase the overall number of plywood layers, the overall strength is stronger, especially the elastic modulus and deformation resistance are better; through va...

Embodiment 2

[0099] A kind of flame-retardant plywood, similar to embodiment 1, the difference is, different middle board thickness:

[0100] Table 2

[0101]

[0102] It can be seen from the above table 2 that when the thickness of the middle plate of the present application is 1.7mm, the test results of the elastic modulus (stripe) and the elastic modulus (stripe) are much higher than the test results of the middle plate thickness of 2.2mm and 3.0mm respectively.

Embodiment 3

[0104] A kind of flame-retardant plywood, similar to Example 1, the difference is that the flame retardant is composed of the following raw materials in parts by weight: 10 parts of magnesium hydroxide, 20 parts of magnesium carbonate, 10 parts of zinc borate, 5 parts of ammonium polyphosphate, and more 10 parts of polyaryl phosphoric acid, 5 parts of acrylonitrile, 15 parts of styrene.

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Abstract

The invention provides a compound flame retardant and a method for improving the performance of flame-retardant plywood by adopting the compound flame retardant. The compound flame retardant comprisesa flame retardant, a silane coupling agent and glue, wherein ratio of the flame retardant to the silane coupling agent to the melamine modified glue is (0.5-2): (0.004-0.01): (0.8-2). According to the invention, a reaction of the flame retardant with the melamine modified glue is utilized to increase the adhesiveness of the glue; and the melamine modified glue is utilized to produce the flame-retardant plywood, and the production process and technical parameters of the flame-retardant plywood are optimized and improved, thereby achieving the goals of improving the bonding strength, elasticitymodulus and other properties of the plywood while achieving a good flame-retardant effect.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a compound flame retardant and a method for improving the performance of a flame-retardant plywood using the compound flame retardant. Background technique [0002] Plywood is a three-layer or multi-layer board-like material that is made of wood sections that are peeled into veneers or sliced ​​into thin wood, and then glued with adhesives. Usually, odd-numbered veneers are used, and adjacent layers of veneers are used. The fiber directions are glued perpendicular to each other. At present, the traditional flame retardant board production process has the following types: [0003] (1) Use the powdered flame retardant to add to the glue and then apply the glue layer by layer to form the flame retardancy of each glue layer of the plywood, so that the product can achieve a certain flame retardant effect; [0004] (2) Directly use flame-retardant glue to press...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K5/04B27K3/52B27D1/08
CPCB27D1/08B27K3/02B27K3/52B27K5/04B27K2240/30
Inventor 徐俊田茂华林荣淡闻建平刘昊陆铜华
Owner TREEZO NEW MATERIAL TECH GRP CO LTD