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Method for improving flame retardance of fraxinus mandshurica wood

A flame-retardant, wood-based technology, applied in the field of wood product processing, can solve the problems of resin-type flame retardants such as poor effect, reduced effect, and easy moisture absorption, so as to speed up impregnation speed and impregnation amount, and improve penetration The effect of improving the mechanical properties

Inactive Publication Date: 2017-09-26
FUNAN XINGGUANG ARTS & CRAFTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the method of flame retardant treatment of Fraxinus mandshurica wood, the traditional method is to use inorganic salt flame retardants for soaking treatment. However, inorganic salt flame retardants have disadvantages such as easy loss and moisture absorption, and are gradually eliminated by people. Existing flame retardant methods Resin-type flame retardants are mostly used. At present, for woods with large shrinkage and deformation such as Fraxinus ash, the effect of ordinary resin-type flame retardants is not very good. As time goes by, the effect decreases rapidly.

Method used

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  • Method for improving flame retardance of fraxinus mandshurica wood

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Embodiment 1

[0016] A method for improving the flame retardancy of Fraxinus mandshurica wood. The flame retardant used is made of the following components in terms of mass percentage: tricresyl phosphate accounts for 12.5%, tetrachlorophthalic anhydride accounts for 11.0%, melamine-formaldehyde Resin accounts for 7.5%, epoxidized polyamide resin accounts for 7.0%, ethylenediamine accounts for 6.2%, dialkyl-p-phenylenediamine accounts for 5.0%, pentaerythritol accounts for 4.5%, 2,6 di-tert-butyl-4-methylphenol Accounting for 2.8%, dioctadecylmethylamino quaternary ammonium salt accounts for 2.5%, and the remainder is water, and its technological method comprises the following steps:

[0017] (1) Put the ash wood in an oven preheated at 100°C, and dry it until the quality is constant. After drying, take out the wood, then put the wood in a pressure tank, and vacuumize it for 15 minutes, with a vacuum degree of 50KPa , inject the prepared flame retardant into the pressure tank, completely so...

Embodiment 2

[0025] A method for improving the flame retardancy of Fraxinus mandshurica wood. The flame retardant used is made of the following components in terms of mass percentage: tricresyl phosphate accounts for 12.7%, tetrachlorophthalic anhydride accounts for 11.5%, melamine-formaldehyde Resin accounts for 7.8%, epoxidized polyamide resin accounts for 7.2%, ethylenediamine accounts for 6.3%, dialkyl-p-phenylenediamine accounts for 5.3%, pentaerythritol accounts for 4.7%, 2,6 di-tert-butyl-4-methylphenol Account for 2.9%, dioctadecylmethylamino quaternary ammonium salt accounts for 2.7%, and the remainder is water, and its process method comprises the following steps:

[0026] (1) Put the ash wood in an oven preheated at 102°C, and dry it until the quality is constant. After baking, take out the wood, then put the wood into a pressure tank, and vacuumize it for 17 minutes, with a vacuum degree of 55KPa , inject the prepared flame retardant into the pressure tank, completely soak the ...

Embodiment 3

[0034]A method for improving the flame retardancy of Fraxinus mandshurica wood. The flame retardant used is made of the following components in terms of mass percentage: tricresyl phosphate accounts for 13.0%, tetrachlorophthalic anhydride accounts for 12.0%, melamine-formaldehyde Resin accounts for 8.0%, epoxidized polyamide resin accounts for 7.5%, ethylenediamine accounts for 6.5%, dialkyl-p-phenylenediamine accounts for 5.5%, pentaerythritol accounts for 5.0%, 2,6 di-tert-butyl-4-methylphenol Accounting for 3.0%, dioctadecylmethylamino quaternary ammonium salt accounts for 3.0%, the remainder is water, and its process method comprises the following steps:

[0035] (1) Put the ash wood in an oven preheated at 105°C, and dry it until the quality is constant. After baking, take out the wood, then put the wood in a pressure tank, and vacuumize it for 20 minutes, with a vacuum degree of 60KPa , inject the prepared flame retardant into the pressure tank, completely soak the wood...

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Abstract

The invention relates to the technical field of wooden product processing and manufacturing and discloses a method for improving flame retardance of fraxinus mandshurica wood. A used flame retardant is prepared from the following components of, by mass, 12.5-13.0% of tricresyl phosphate, 11.0-12.0% of tetrachlorophthalic anhydride, 7.5-8.0% of tripolycyanamide- formaldehyde resin, 7.0-7.5% of epoxy polyamide resin, 6.2-6.5% of ethidene diamine, 5.0-5.5% of dialkyl p-phenylenediamine, 4.5-5.0% of pentaerythritol, 2.8-3.0% of 2,6 ditert-butyl-4-cresol, 2.5-3.0% of bioctadecyl methylamino quaternary ammonium salt and the balance water. The flame retardant is applicable to the wood characteristic of fraxinus mandshurica, and meanwhile, a vacuum pressure treatment technology and microwave treatment are applied to wood flame retardance treatment, and the flame retardance effect is enhanced.

Description

technical field [0001] The invention belongs to the technical field of wood product processing and manufacture, and in particular relates to a method for improving the flame retardancy of Fraxinus mandshurica wood. Background technique [0002] Fraxinus mandshurica, also known as: big-leaved ash tree, big-leaved ash, and willow, is a large deciduous tree in the family Oleaceae and the genus Ash. The bark is taupe, smooth, and lobed when old. The winter buds are broadly ovoid, with a pointed top, dark brown, shiny, and the inner side is densely covered with brown curly hairs. The young branches of the current year are light yellow, straight and glabrous, and the last year's branches are dark brown with scattered lenticels. Samara linear, apex obtuse, acute or slightly concave, wings extending down to the middle of the nut, about 1 cm long, slightly raised; with persistent calyx. The flowering period is April-May, and the fruiting period is September-October. Fraxinus mands...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/08B27K3/12B27K3/52B27K5/00B27K5/04
CPCB27K3/0214B27K3/08B27K3/12B27K3/52B27K5/0055B27K5/04B27K2240/50
Inventor 陈献军陈子玉
Owner FUNAN XINGGUANG ARTS & CRAFTS CO LTD
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