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Title:
HALOGEN-FREE INORGANIC FLAME-RETARDANT MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/189606
Kind Code:
A1
Abstract:
Disclosed are a halogen-free inorganic flame-retardant material, a preparation method therefor and the use thereof, belonging to the field of inorganic liquid phase flame-retardant technology. The halogen-free inorganic flame-retardant material is prepared by mixing raw materials comprising the following components: an aqueous aluminum sulfate solution, a saturated aqueous iron sulfate solution and an aqueous sodium metasilicate solution at a volume ratio of 2.5 : 2.5 : 1 to 2 : 3 : 1, wherein the molar concentrations of the aqueous sodium metasilicate solution and the aqueous aluminum sulfate solution are independently 0.09-0.11 mol/L; and the saturated aqueous iron sulfate solution is a saturated aqueous solution at 15-17ºC. After the halogen-free inorganic flame-retardant material is applied to the surface of a combustible, various solute components in the raw materials can undergo a decomposition reaction at a high temperature to prevent further combustion of the combustible; and in addition, the various solute components in the raw materials absorb heat during the decomposition process to reduce the surface temperature of the combustible and have a flame retardant effect. Moreover, the remaining attachments after flame retardation are easily recovered and have almost no negative effect on the environment.

Inventors:
YUAN ZHIZHONG (CN)
LIU GUANGLEI (CN)
LUO RUI (CN)
CAO FUYANG (CN)
MA WENLONG (CN)
SONG YI (CN)
LIU JUNLING (CN)
XU HAITAO (CN)
Application Number:
PCT/CN2020/089169
Publication Date:
September 30, 2021
Filing Date:
May 08, 2020
Export Citation:
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Assignee:
UNIV JIANGSU (CN)
International Classes:
D21H17/66; B27K3/20; B27K3/26; B27K3/32; D21H21/34; D21H27/00
Domestic Patent References:
WO2019004846A12019-01-03
Foreign References:
CN109824940A2019-05-31
CN107206616A2017-09-26
Other References:
PANG, WEIFENG ET AL.: "Development and Prospect of Flame Retardant Technique and Standards for Wooden Materials", GUANGDONG FORESTRY SCIENCE AND TECHNOLOGY, vol. 28, no. 3, 31 December 2012 (2012-12-31), pages 57 - 61, XP055853946
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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