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A kind of preparation method of aluminum-wood composite flame-retardant window frame or door frame

An aluminum-wood composite and window frame technology, applied in the field of flame-retardant materials, can solve problems such as unsatisfactory combustion performance, achieve the effect of reducing heat transfer coefficient and improving fire-resistant integrity

Active Publication Date: 2018-06-05
BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the flammability of wood, the combustion performance of the whole window cannot meet the requirement of fire resistance of 0.5h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The present invention has no special requirements on the preparation method of the flame retardant, and it only needs to mix magnesium hydroxide, borax and water uniformly.

[0033] The present invention also provides a method for preparing flame-retardant wood using the flame retardant, comprising the following steps:

[0034] After the wood raw material is vacuumized, it is immersed in a flame retardant system containing a flame retardant and water in a vacuum state;

[0035] Pressure treatment of hybrid systems comprising wood and flame retardant systems;

[0036] Aging treatment is performed on the pressure-treated wood to obtain fire-resistant wood.

[0037] In the invention, after vacuumizing the wood raw material, it is immersed in a flame retardant system containing a flame retardant and water in a vacuum state. In the present invention, wood is preferably placed in an airtight container, and the airtight container is vacuumized. In the present invention, the...

Embodiment 1

[0050] Vacuum the wood at -70KPa for 5 minutes, and then immerse the wood in the flame retardant system under the vacuum condition. The mass ratio of flame retardant and water in the flame retardant system is 1:2, and the mass ratio of magnesium hydroxide, borax and water in the flame retardant is 10:30:65.

[0051] The mixed system of wood and flame retardant system is pressurized, the pressure is 1.8MPa, and the pressurization time is 80 minutes. After the pressure treatment, the flame retardant system was removed, and the obtained wood was evacuated at -90KPa for 5 minutes.

[0052] The obtained wood was aged at 18° C. for 5 days, and the ambient humidity was 40% during aging.

[0053] The aged wood was dried at 70° C. for 36 hours to obtain flame retardant wood.

[0054] The obtained flame-retardant wood is assembled into a frame, a layer of polyurethane foam glue with a thickness of 3 mm is arranged on the surface, and an aluminum gusset is covered to obtain an aluminum...

Embodiment 2

[0058] Vacuum the wood at 0KPa for 20 minutes, and then immerse the wood in the flame retardant system under the vacuum condition. The mass ratio of flame retardant and water in the flame retardant system is 1:5, and the mass ratio of magnesium hydroxide, borax and water in the flame retardant is 20:20:55.

[0059] The mixed system of wood and flame retardant system is pressurized, the pressure is 1MPa, and the pressurization time is 120 minutes. After the pressure treatment, the flame retardant system was removed, and the obtained wood was evacuated at -70KPa for 20 minutes.

[0060] The obtained wood was aged at 23° C. for 4 days, and the ambient humidity was 50% during aging.

[0061] The aged wood was dried at 100° C. for 25 hours to obtain flame retardant wood.

[0062] The obtained flame-retardant wood is assembled into a frame, a layer of polyurethane foam glue with a thickness of 4mm is arranged on the surface, and an aluminum gusset is covered to obtain an aluminum-...

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Abstract

The invention provides a flame retardant. The flame retardant comprises 10-20 parts of magnesium hydroxide, 20-30 parts of boraxes and 55-65 parts of water. The invention further provides a method for manufacturing flame-retardant wood by means of the flame retardant. The method for manufacturing the flame-retardant wood by means of the flame retardant comprises the following steps that after vacuumizing treatment is conducted on a wood material, the wood material is soaked in a flame retardant system containing the flame retardant and water in a vacuum state; pressurizing treatment is conducted on a mixed system containing wood and the flame retardant system; and aging treatment is conducted on the wood subjected to pressurizing treatment, and thus the flame-retardant wood is obtained. Experimental results show that the heat transfer coefficient of an obtained aluminum-wood composite flame-retardant window frame is 1.1 W / (m<2>.K), however, the heat transfer coefficient of an ordinary aluminum-wood composite window frame is 1.8 W / (m<2>.K); and the flame-retardant completeness of the aluminum-wood composite flame-retardant window frame is 40 minutes, and the aluminum-wood composite flame-retardant window frame meets the requirement for 0.5 h specified by (Building Design for Fire Protection) (GB50016-2014).

Description

technical field [0001] The invention relates to the technical field of flame retardant materials, in particular to a flame retardant and a method for preparing an aluminum-wood composite flame retardant window frame or door frame. Background technique [0002] The new version of "Code for Fire Protection Design of Buildings" (GB50016-2014) was officially implemented on May 1, 2015. Article 6.7.7 of the code stipulates that when the external thermal insulation system of the building's external wall adopts thermal insulation materials with a combustion performance of B1, the building height For public buildings larger than 24m and residential buildings with building heights larger than 27m, the fire integrity of doors and windows on the exterior wall of the building should not be less than 0.5h. [0003] With the vigorous promotion and popularization of ultra-low energy buildings, wooden windows have become a window type that is widely used in ultra-low energy buildings, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/08B27K3/32B27K5/00B27M3/18B27M3/00B27D1/00B32B21/04B32B15/20B32B15/04B32B33/00E06B1/32
CPCB27D1/00B27K3/08B27K3/32B27K5/007B27M3/0013B27M3/18B32B15/046B32B15/20B32B21/047B32B33/00B32B2266/0278B32B2307/3065B32B2419/00E06B1/32
Inventor 赵炜璇路国忠张佳阳
Owner BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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