Composite flame retardant for preparing plywood

A composite flame retardant and plywood technology, applied in the field of wood processing, can solve the problems of poor loss resistance and aging resistance, great influence on the mechanical properties of plywood, and inconspicuous flame retardant effect, and achieve good flame retardant effect and smoke suppression Environmentally friendly, good smoke suppression effect

Inactive Publication Date: 2018-12-21
TIANE COUNTY PINGCHANG ECOLOGICAL AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although flame retardants are widely used in plywood, the existing flame retardants still have the following problems: the flame retardant effect is not obvious, the cost is high, the loss resistance and aging resistance are poor, and the mechanical properties of plywood are greatly affected.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A composite flame retardant for preparing plywood, comprising the following raw materials in parts by weight: 60 parts of polyvinyl alcohol, 5 parts of antimony trioxide, 0.1 part of magnesium oxide, 30 parts of nano-montmorillonite and 30 parts of urea; The molecular weight of described polyvinyl alcohol is 8000.

[0017] The preparation method of the composite flame retardant for plywood comprises the following steps: weighing 25 parts of polyvinyl alcohol, 5 parts of antimony trioxide, 0.1 part of magnesium oxide, 30 parts of nano-montmorillonite and 30 parts of urea, Add the pulverizer to pulverize to 120 mesh, then mix the components, and finally add water to prepare a wood composite flame retardant solution with a mass concentration of 10%.

[0018] The application of the described composite flame retardant for preparing plywood in the production of flame retardant fiberboard comprises the following production steps:

[0019] (1) Select a veneer with few knots an...

Embodiment 2

[0024] A composite flame retardant for preparing plywood, comprising the following raw materials in parts by weight: 100 parts of polyvinyl alcohol, 15 parts of antimony trioxide, 0.5 parts of magnesium oxide, 40 parts of nano-montmorillonite and 40 parts of urea; The molecular weight of described polyvinyl alcohol is 8000.

[0025] The preparation method of the flame retardant for plywood comprises the following steps: weighing 35 parts of polyvinyl alcohol, 15 parts of antimony trioxide, 0.5 parts of magnesium oxide, 40 parts of nano-montmorillonite and 40 parts of urea, respectively Put in a pulverizer and pulverize to 150 mesh, then mix the components, and finally add water to prepare a wood composite flame retardant solution with a mass concentration of 15%.

[0026] The application of the composite flame retardant used to prepare plywood in the production of flame-retardant fiberboard is the same as above.

Embodiment 3

[0028] A composite flame retardant for preparing plywood, comprising the following raw materials in parts by weight: 80 parts of polyvinyl alcohol, 10 parts of antimony trioxide, 0.3 parts of magnesium oxide, 35 parts of nano-montmorillonite and 35 parts of urea; The molecular weight of described polyvinyl alcohol is 8000.

[0029] The preparation method of the flame retardant for preparing plywood comprises the following steps: weighing 30 parts of polyvinyl alcohol, 10 parts of antimony trioxide, 0.3 parts of magnesium oxide, 35 parts of nano-montmorillonite and 35 parts of urea, Add a pulverizer to pulverize to 140 mesh, then mix the components, and finally add water to prepare a wood composite flame retardant solution with a mass concentration of 12%.

[0030] The application of the composite flame retardant used to prepare plywood in the production of flame-retardant fiberboard is the same as above.

[0031] The oxygen index value of the flame retardant plywood obtained ...

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PUM

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Abstract

The invention relates to the technical field of wood processing, in particular to a composite flame retardant for preparing a plywood, as well as a preparation method and application thereof in producing the plywood. The composite flame retardant for preparing the plywood is prepared from the following raw materials in parts by weight: 60 to 100 parts of polyvinyl alcohol, 5 to 15 parts of antimonous oxide, 0.1 to 0.5 part of magnesium oxide, 30 to 40 parts of nano-montmorillonite, and 30 to 40 parts of urea. According to the composite flame retardant provided by the invention, the raw materials have synergistic flame retardance, so that the composite flame retardant has the advantages of good flame retardant effect, low toxicity, good smoke suppression and environment protection, and is low in price; and according to the flame-retardant plywood prepared through the flame retardant provided by the invention, the flame retardant property of the flame-retardant plywood can be remarkablyimproved, and the flame-retardant plywood can meet the requirement of the national standard C-grade fireproof grade.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a composite flame retardant for preparing plywood, a preparation method and application thereof. Background technique [0002] Wood-based panels mainly include three categories: plywood, particleboard and fiberboard. Among them, plywood has the best strength and volume stability, and is also the most widely used in practical applications. Plywood is one of the commonly used materials for furniture and building decoration. Wood-based panels are actually a kind of wood material, which is a combustible material with a very low ignition point. Therefore, it is often necessary to add flame retardants for flame-retardant treatment. The quality of flame retardants will affect the fire-proof effect of wood-based panels. [0003] In recent years, with the continuous increase of plywood production and the continuous improvement of people's awareness of fire prevention, a variety o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27K3/00B27K3/02B27D1/08B27D5/00
CPCB27D1/08B27D5/006B27K3/007B27K3/02B27K3/0214B27K3/52B27K2240/30
Inventor 张宗斌
Owner TIANE COUNTY PINGCHANG ECOLOGICAL AGRI
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