In-situ ultrasonic flame-retardant protection method for wood structure ancient building in northwest region

A technique of ancient buildings, wooden structures

Active Publication Date: 2022-01-11
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the in-situ flame-retardant modified infiltration reinforcement method of wooden structure ancient buildings in the above-mentioned prior art, which has uneven penetration, poor flame-retardant effect, large color difference after treatment of flame-retardant materials, and uneven penetration of flame-retardant materials. The flame-retardant coating has the disadvantages of poor application degree on the surface of wood materials, easy warping and peeling, and easy loss of flame-retardant materials, resulting in performance failure. It provides a kind of coating that is convenient to operate, transparent in coating, and has excellent in-situ interaction with wood. In-situ ultrasonic flame retardant protection method for ancient wooden structures in Northwest China

Method used

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  • In-situ ultrasonic flame-retardant protection method for wood structure ancient building in northwest region
  • In-situ ultrasonic flame-retardant protection method for wood structure ancient building in northwest region
  • In-situ ultrasonic flame-retardant protection method for wood structure ancient building in northwest region

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Embodiment 1

[0031] An in-situ ultrasonic flame-retardant protection method for ancient wooden structures in Northwest China, comprising the following steps:

[0032] Step 1: Clean the surface of the wooden structure building, use a dry soft brush to clean the surface of the wooden components of the ancient building, and thoroughly remove the floating dust and dirt that stick to the surface of the wooden components.

[0033] The second step: dissolving 0.01mol / L zinc acetate solution to prepare No. 1 humidity control material for use.

[0034] Step 3: prepare a 0.05 mol / L phytic acid aqueous solution to prepare No. 2 flame retardant material for use.

[0035] Step 4: Ultrasonic disperse octadecyltrimethoxysilane in ethanol aqueous solution to prepare No. 3 reinforcement material for use. The volume ratio of deionized water and ethanol is 9:1. In the aqueous solution of octadecyltrimethoxysilane ethanol, the mass percentage of the solute is 3%.

[0036] Step 5: In-situ flame retardant rei...

Embodiment 2

[0041] An in-situ ultrasonic flame-retardant protection method for ancient wooden structures in Northwest China, comprising the following steps:

[0042]Step 1: Clean the surface of the wooden structure building, use a dry soft brush to clean the surface of the wooden components of the ancient building, and thoroughly remove the floating dust and dirt that stick to the surface of the wooden components.

[0043] The second step: dissolving 0.02mol / L zinc acetate solution to prepare No. 1 humidity control material for use.

[0044] Step 3: prepare 0.10 mol / L phytic acid aqueous solution to prepare No. 2 flame retardant material for use.

[0045] Step 4: Ultrasonic disperse octadecyltrimethoxysilane in ethanol aqueous solution to prepare No. 3 reinforcement material for use. The volume ratio of deionized water and ethanol is 7:1. In the aqueous solution of octadecyltrimethoxysilane ethanol, the mass percentage of the solute is 5%.

[0046] Step 5: In-situ flame retardant reinfo...

Embodiment 3

[0051] An in-situ ultrasonic flame-retardant protection method for ancient wooden structures in Northwest China, comprising the following steps:

[0052] Step 1: Clean the surface of the wooden structure building, use a dry soft brush to clean the surface of the wooden components of the ancient building, and thoroughly remove the floating dust and dirt that stick to the surface of the wooden components.

[0053] The second step: dissolving 0.03mol / L zinc acetate solution to prepare No. 1 humidity control material for use.

[0054] Step 3: prepare a 0.15 mol / L phytic acid aqueous solution to prepare No. 2 flame retardant material for use.

[0055] Step 4: Ultrasonic disperse octadecyltrimethoxysilane in ethanol aqueous solution to prepare No. 3 reinforcement material for use. The volume ratio of deionized water and ethanol is 3:1. In the aqueous solution of octadecyltrimethoxysilane ethanol, the mass percentage of the solute is 4%.

[0056] Step 5: In-situ flame retardant rei...

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Abstract

The invention discloses an in-situ ultrasonic flame-retardant protection method for a wood structure ancient building in the northwest region, and belongs to the technical field of wood structure flame retardance. The method is characterized in that according to a biomineralization principle, ultrasonic waves are used as driving force, water and ethyl alcohol are used as flame retardant carrying solvents, and in-situ flame-retardant modification is conducted on wood through a sol-gel method; through permeation treatment of octadecyltrimethoxysilane on a wood component, the octadecyltrimethoxysilane and the wood component fibers form an interactive three-dimensional network structure in a wood component matrix through hydrogen-bond interaction, and the network structure not only has an excellent fiber reinforcing effect, but also can effectively immobilize zinc phytate in the wood component matrix, so that the stability of the wood component matrix is improved; ultrasonic waves can be used for opening a new reaction channel due to the characteristics of good directivity, moderate vibration frequency range, low energy transfer attenuation and the like; and the flame-retardant modification treatment on the wood material of the ancient wood-structure building is realized by physical and chemical methods under the condition of minimum intervention.

Description

technical field [0001] The invention belongs to the technical field of fire prevention and flame retardant of wooden structure ancient building cultural relics, and relates to an in-situ ultrasonic flame retardant protection method of wooden structure ancient buildings in Northwest China. Background technique [0002] Ancient architectural relics are famous for their unique shape and structure, large size and large number, and their historical, cultural and social significance is immeasurable. The materials used in ancient buildings may be different, but as a natural polymer, wood materials are composed of cellulose, hemicellulose and lignin, which shows that no matter what age the ancient buildings with wooden structure, their in-situ flame retardant and fire protection research There are common problems. Fire has become a natural disaster with a high frequency among the frequent disasters in the world today. If a fire occurs, these precious non-renewable wooden structure ...

Claims

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Application Information

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IPC IPC(8): B27K3/52B27K3/02
CPCB27K3/52B27K3/02B27K2240/30
Inventor 汪娟丽李玉虎曹静邓字巍买冰洁邢惠萍韦晗宇
Owner SHAANXI NORMAL UNIV
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