CN101623886B - Loss-resistance and high-efficiency flame-retarding wood and processing method thereof - Google Patents
Loss-resistance and high-efficiency flame-retarding wood and processing method thereof Download PDFInfo
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- CN101623886B CN101623886B CN2009100750327A CN200910075032A CN101623886B CN 101623886 B CN101623886 B CN 101623886B CN 2009100750327 A CN2009100750327 A CN 2009100750327A CN 200910075032 A CN200910075032 A CN 200910075032A CN 101623886 B CN101623886 B CN 101623886B
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Abstract
The present invention provides loss-resistance high-efficiency flame-retarding wood which contains carbonate or bicarbonate and oxide sol compound, wherein the oxide sol comprises SiO2 sol, Al2O3 sol, or SiO2/Al2O3 compound sol, or transitional oxide sol or rare earth oxide sol. The loss-resistance high-efficiency flame-retarding wood is in sharing with the oxide sol by utilizing the advantages of high flame-retarding efficiency, low price and simple preparation of inorganic flame retardant, overcomes the defects of weak moisture absorption and poor weather resistance, and easy loss in water or large-humidity environment, and the like of the inorganic flame retardant, and improves the loss-resistance performance of the material at the same time of improving the flame-retarding efficiency. The present invention has the advantages: 1, the treatment process is simple, the reaction conditions are moderate and easily controlled, and the industrial production can be achieved at the lower temperature and normal pressure; 2, the flame retardant is of an inorganic flame-retarding system and has high flame-retarding efficiency and lower cost, and the flame-retarding solution can be circularly used; and 3, the flame-retarding system has a certain rinsing-resistance performance.
Description
Technical field
The present invention relates to a kind of loss-resistance and high-efficiency flame-retarding wood and processing method, belong to chemical industry fire proofing preparing technical field.
Background technology
Timber belongs to natural polymer, is main building structural materials, also is the main material that interior decoration is decorated.But timber is when being heated, and the series of physical chemical reaction will take place for its inside and surface.In the presence of oxygen, gaseous product generation oxidation finally can violent burning.Therefore, for the fire hazard that prevents combustion of wood to bring, must carry out necessary flame treatment to timber and woodwork thereof.
Fire-retarding of wood is handled and is divided into according to treatment process: two kinds of methods of surface-coated and solvent impregnated processing, the fire retardant of handling timber at first proposed from 1821 with since ammonium phosphate, ammonium chloride and the borax till now, the compound of elements such as that widely used fire-retarding of wood composition is still is nitrogenous, phosphorus, boron, silicon, ammonium.As: APP, diammonium hydrogen phosphate, boric acid, sodium metasilicate etc.Though conventional formulation good flame retardation effect, low price, preparation based on inorganic compound are simple, the shortcoming of the moisture absorption is arranged, weatherability is poor, and chance water or ambient humidity run off when big easily, handle shortcomings such as sample term of validity weak point.For overcoming these shortcomings, have the anti-current mistake, weatherability is strong, effect is lasting fire retardant earns widespread respect, and large development has been arranged.1973, adopt polymerisable monomer directly in the timber that inorganic combustion inhibitor is handled, to plastify, with macromolecular material inorganic combustion inhibitor is solidificated in the timber, well overcome above-mentioned shortcoming.But organic fire-retardant price comparatively speaking is higher, has limited it and has applied.1993, develop a kind of zwitterion system fire retardant: earlier with a kind of anion ((NH
4)
2HPO
4, Na
2HPO
4Solution) impregnated timber uses a kind of cation (as Al again
2(SO
4)
3, BaCl
2, Ba (OH)
2) solution) handle, in timber, form a kind of water-insoluble fire retardant, anticorrosive material.Keeping the high efficiency while of fire retardant, the resistance to water of product is improved, but remain further to be improved.
Summary of the invention
The object of the present invention is to provide a kind of loss-resistance and high-efficiency flame-retarding wood and preparation method, in the hope of utilizing inorganic combustion inhibitor flame retarding efficiency height, low price, the simple advantage of preparation, overcome simultaneously the inorganic combustion inhibitor moisture absorption, weatherability poor, meet water or ambient humidity shortcoming such as loss easily when big.
The object of the present invention is achieved like this: this loss-resistance and high-efficiency flame-retarding wood, its feature comprises: fire retarding wood contains carbonate or acid carbonate and oxide sol compound.
Described loss-resistance and high-efficiency flame-retarding wood, described oxide sol comprises SiO
2Colloidal sol, Al
2O
3Colloidal sol or SiO
2/ Al
2O
3Complex sol or transition metal oxide colloidal sol or rare earth oxide colloidal sol.
The processing method of described loss-resistance and high-efficiency flame-retarding wood comprises the steps:
A, at first be that 1: 1～1: 50 water soaked 0.5-8 hour in room temperature to 90 ℃ with the timber mass ratio, then room temperature～85 ℃ drying 6～24 hours;
B, be that 1%～20% the soluble carbon hydrochlorate or the acid carbonate aqueous solution soaked 0.5～4 hour under ℃ condition of room temperature～90 with mass concentration, the mass ratio of solution and timber is 50: 1～10: 1, under 60～85 ℃ of conditions, dried 8～24 hours then, obtain carbonate or acid carbonate solution fire retarding wood goods;
C, under ℃ condition of room temperature～90, soaked 0.5～4 hour with oxide sol, the mass ratio of broad glue and timber is 50: 1～10: 1, under 60～85 ℃ of conditions, dried 8～24 hours again, obtain carbonate or acid carbonate/oxide sol composite flame-proof timber-work.
The present invention utilizes inorganic combustion inhibitor flame retarding efficiency height, low price, the simple advantage of preparation, shared with oxide sol, overcome the inorganic combustion inhibitor moisture absorption, weatherability poor, meet water or ambient humidity shortcoming such as loss easily when big, when having improved flame retarding efficiency, improved the anti-flow and failure property of material, be actually to have utilized in combustion process, to have formed and have inorganic salts heat insulation, the oxygen barrier effect, advantage of the present invention is: 1, treatment process is simple, the gentle control easily of reaction condition can realize suitability for industrialized production under lower temperature and normal pressure;
2, fire retardant is inorganic fire-retarded system, the flame retarding efficiency height, and the lower and fire resistant fluid of price can be recycled;
3, flame-retardant system has certain anti-drip washing performance.
The specific embodiment
1, be that 1,5,10,20% wet chemical soaked respectively 1.5 hours at ambient temperature with ready timber mass concentration, the mass ratio of solution and timber is 30: 1, take out, dried 24 hours down, obtain solution of potassium carbonate fire retarding wood goods at 70 ℃;
2, preparation colloidal sol (preparation method does not have specific (special) requirements);
(1) preparation concentration is the SiO of 2.09M
2Colloidal sol;
(2) preparation concentration is the Al of 1.02M
2O
3Colloidal sol;
(3) preparation concentration is respectively 0.7/1.0M, the SiO of 0.85/0.60M
2/ Al
2O
3Complex sol;
3, directly handle timber (being used for contrast test) with preparation colloidal sol
Ready timber was soaked respectively 1.0 hours at ambient temperature with the resulting colloidal sol of preparation, and the mass ratio of colloidal sol and timber is 30: 1, takes out, and dries 24 hours down at 70 ℃, obtains colloidal sol fire retarding wood goods.
4, handle carbonate or the acid carbonate solution fire retarding wood (being used for contrast test) that obtains with colloidal sol
With the colloidal sol of the preparation potash fire retarding wood that obtains of soaking step 1 1.0 hours respectively at ambient temperature, the mass ratio of colloidal sol and timber is 30: 1, dries 24 hours down at 70 ℃ then, obtains colloidal sol/carbonate or acid carbonate composite flame-proof timber-work.
5, the resistance leachability of sample can be tested and refer to that it is to be respectively 10min, 20min, 30min in 30: 1 the deionized water that the fire-retardant sample that different flame retardant was handled is immersed in mass ratio with fire-retardant sample, then sample was dried 24 hours down at 70 ℃, obtain resistance to water experiment fire retarding wood goods.
6, the fire resistance of fire-retardant sample and resistance leachability can test results
Limited oxygen index (LOI) is in nitrogen oxygen mixed gas, keeps the required minimum oxygen percentage of sample combustion, is used for characterizing the flame retardant effect of sample.Press ASTM D2863-2000 standard, use HC-2 oxygen index instrument (Jiangning, Nanjing analytical instrument factory) to measure.
Table 1 K
2CO
3Fire resistance with sol system processing sample
The oxygen index (OI) (LOI) of the different soak times of table 2 sample
The foregoing description table 1 test data mainly is all good for the common timber of handling than colloidal sol simple processes of carbonate treatment or simple that uses of carbonate and colloidal sol is described; And echo mutually with the resistance to water experiment in the table 2, carbonate and colloidal sol use the resistance to water of sample to be enhanced jointly.
Listed examples of the present invention is intended to further illustrate the preparation method and the application direction of this loss-resistance and high-efficiency flame-retarding wood, and protection scope of the present invention is not constituted any restriction.
Claims (1)
1. the processing method of a loss-resistance and high-efficiency flame-retarding wood, its feature comprises the steps:
A, at first be that 1: 1～1: 50 water soaked 0.5-8 hour in room temperature to 90 ℃ with the timber mass ratio, then room temperature～85 ℃ drying 6～24 hours;
B, be that 1%～20% the soluble carbon hydrochlorate or the acid carbonate aqueous solution soaked 0.5～4 hour under ℃ condition of room temperature～90 with mass concentration, the mass ratio of solution and timber is 50: 1～10: 1, under 60～85 ℃ of conditions, dried 8～24 hours then, obtain carbonate or acid carbonate solution fire retarding wood goods;
C, use SiO
2Colloidal sol, Al
2O
3Colloidal sol or SiO
2/ Al
2O
3Complex sol or transition metal oxide colloidal sol or rare earth oxide colloidal sol soaked 0.5～4 hour under ℃ condition of room temperature～90, the mass ratio of colloidal sol and timber is 50: 1～10: 1, under 60～85 ℃ of conditions, dried 8～24 hours again, obtain carbonate or acid carbonate/oxide sol composite flame-proof timber-work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100750327A CN101623886B (en) | 2009-08-03 | 2009-08-03 | Loss-resistance and high-efficiency flame-retarding wood and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100750327A CN101623886B (en) | 2009-08-03 | 2009-08-03 | Loss-resistance and high-efficiency flame-retarding wood and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101623886A CN101623886A (en) | 2010-01-13 |
| CN101623886B true CN101623886B (en) | 2011-06-08 |
Family
ID=41519953
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100750327A Expired - Fee Related CN101623886B (en) | 2009-08-03 | 2009-08-03 | Loss-resistance and high-efficiency flame-retarding wood and processing method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259363A (en) * | 2011-07-01 | 2011-11-30 | 浙江农林大学 | Bamboo wood anti-flaming impregnation liquid and production method and application thereof |
| CN106625948A (en) * | 2016-12-02 | 2017-05-10 | 攀枝花学院 | Soaking liquid for moth, crack and fire resistance of wood and preparation method of soaking liquid |
| CN108748503A (en) * | 2018-06-12 | 2018-11-06 | 阜南县创发工艺品有限公司 | A method of extending the fast growing wood outdoor application time limit |
| CN108943246A (en) * | 2018-09-04 | 2018-12-07 | 安徽美之然木业有限公司 | A kind of flame-proof treatment method of household timber |
| CN112720748A (en) * | 2020-12-30 | 2021-04-30 | 廊坊华日家具股份有限公司 | Phosphorus-nitrogen-boron wood flame retardant |
| CN113386223A (en) * | 2021-07-07 | 2021-09-14 | 中南林业科技大学 | Transparent bamboo material and preparation method and application thereof |
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2009
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