CN107214799A - A kind of chemical modification silicon ash base fire retarding wood composite coating - Google Patents
A kind of chemical modification silicon ash base fire retarding wood composite coating Download PDFInfo
- Publication number
- CN107214799A CN107214799A CN201710325122.1A CN201710325122A CN107214799A CN 107214799 A CN107214799 A CN 107214799A CN 201710325122 A CN201710325122 A CN 201710325122A CN 107214799 A CN107214799 A CN 107214799A
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- CN
- China
- Prior art keywords
- composite coating
- silicon ash
- titanium dioxide
- formula ratio
- activated carbon
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/30—Fireproofing
Abstract
The invention discloses a kind of chemical modification silicon ash base fire retarding wood composite coating, it is calculated in mass percent, including following raw material：Silicon ash 25%~35%, exciting agent 17%~25%, titanium dioxide 4%~6%, polyacrylamide 0.5%~1.5%, activated carbon 2%~5%, water 31.5%~47.5%, the mass percent sum of raw material is 100%；Exciting agent is using sodium metasilicate and the mixture of potassium hydroxide.The novelty of the present invention is to open with silicon ash, activated carbon, titanium dioxide, and polyacrylamide prepares inorganic silica sol, researches and develops the new way of fire retarding wood coating.
Description
Technical field
The invention belongs to chemical building material and technical field of fire safety, and in particular to a kind of fire-retardant wood of chemical modification silicon ash base
Material composite coating and preparation method thereof.
Background technology
The main filmogen of current aqueous architectural coating is aqueous polyurethane, water soluble acrylic acid and aqueous epoxy resins are applied
Material etc., wherein aqueous polyurethane coating have been widely used because of its premium properties, poly- in particular by acrylic ester modified water-soluble
Urethane emulsion prepares inexpensive, safe and nontoxic, environmentally friendly new coating, therefore the preparation and research of water flame-proof paint are main poly-
Jiao is in organic film-forming material and the adhesive property of wood surface, and growth machine of the inorganic nano-particle in organic film-forming material
Reason and fire retarding effect.But the research to inorganic silicon Sol SYSTEMS coating is less, lack the resistance using inorganic siliceous filmogen as base-material
Fire preparation and the performance study of wood coating.
The content of the invention
In view of the deficienciess of the prior art, the present invention proposes that a kind of new chemical modification silicon ash base fire retarding wood is combined
Coating and preparation method thereof.
To solve the above problems, the technical solution adopted by the present invention is：
A kind of chemical modification silicon ash base fire retarding wood composite coating, is calculated in mass percent, including following raw material：
The mass percent sum of raw material is 100%；
Exciting agent is using sodium metasilicate and the mixture of potassium hydroxide.
Exciting agent includes the sodium metasilicate and 5%~7% potassium hydroxide of mass percent 12%~18%.
The activated carbon is walnut shell activated carbon, 50.82 μm of particle mean size.
The polyacrylamide is anionic white particle.
The titanium dioxide coarseness is 0.15 μm~0.3 μm, and breadth of particle size distribution is 0.1~0.2, and oil-dispersing property is 40 μm
~60 μm.
The preparation method of the compound painting comprises the following steps：The exciting agent of formula ratio is dissolved in first is carried out in gauge water
The silicon ash that formula ratio is added after secondary stirring carries out second of stirring again, and silicon ash based sols are made；Into silicon ash based sols successively
Third time stirring is carried out after the activated carbon, titanium dioxide, polyacrylamide that add formula ratio, stands and obtains composite coating.
First time stirring condition is 60 DEG C~70 DEG C, 1000r/min~1500r/min stirrings 30min.
The time that formula ratio silicon ash is added continues 15min~20min.
Activated carbon, titanium dioxide, the polyacrylamide of formula ratio, which are added, continues 15~20min total time.
Third time stirring condition is that 1000r/min~1500r/min stirs 20min~30min.
Compared with prior art, the present invention has following technique effect：
1) novelty of the invention is to open with silicon ash, activated carbon, titanium dioxide, and polyacrylamide prepares inorganic silicon
Matter colloidal sol, researches and develops the new way of fire retarding wood coating.
2) heat endurance of composite coating prepared by the present invention is high, to the excellent fireproof performance of timber.
3) the preparation process cost of raw material of the present invention is cheap, environmental protection, can scale prepared using Industrial Solid Waste silicon ash it is fire-retardant
Wood coating, and coating is nontoxic in whole life cycle.
4) preparation method of the invention uses relatively low heating-up temperature, preparation process normal temperature and pressure bar indoors
Carried out under part, preparation condition is soft.
In order that objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
Describe in detail.The specific embodiments described herein are merely illustrative of the present invention, is not intended to limit the present invention.
Embodiment
Silicon ash comes from metallurgical industry solid waste, and powder of the category rich in activated silica, inventor's research finds that silicon ash is through exciting agent
Chemical modification can form the Ludox with-Si-O-Si- structures, mix auxiliary agent or handled through maintenance, can be formed and plank is adhered to
Property stronger siliceous film layer, fire retarding effect can be produced in theory, but its actual flame retardant effect is not good.Also sent out through inventor's research
Existing, the addition of exciting agent sodium metasilicate and potassium hydroxide has the effect of concerted reaction to silicon ash, and polyacrylamide is used as dispersant
With synergistic modifying agent, it contributes to silicon ash to develop into the finer and close unformed silicrete of structure, silicon can be improved to a certain extent
The fire resistance of grey base coating, but the weatherability and fire resistance effect of prepared silicon ash base coating still need to improve, therefore, hair
Person of good sense's long felt, it is desirable to be effectively improved the flame retardant effect of silicon ash base coating：TiO is mixed in timber structure organic coating2Deng
The rhermal decomposition rate of timber can be delayed, heat endurance, the antioxygenic property of coating is improved, formation structure is more closely knit, dilatancy
Can the lower expanding layer of higher, heat conductivility, effectively prevention propagation of flame and its fire resistance of raising；In addition, TiO2It is absorbable
Easily make the ultraviolet of organic matter aging, so as to improve the ageing resistace of timber, its antibiotic property can also be to wood preservation；In alkalescence
Under environment, TiO2The Ti (OH) hydrolyzed to form4Can also occur certain polycondensation reaction, shape with ≡ Si-O-Si ≡ in Ludox etc.
Into the siliceous amorphous substance that structure is finer and close；Active carbon powder can improve the hydrophobicity of silicon ash base coating, rich in micropore
Architectural feature can also improve the compactness that silicrete is formed after coating expanded by heating.Activated carbon and titanium dioxide can be made in theory
For the modifying agent of silicon ash base coating to optimize its fire resistance and weatherability.
Therefore, the silicon ash that utilization of the present invention can provide inorganic aluminosilicate composition is raw material, in chemical modifier sodium metasilicate
In the presence of potassium hydroxide, inorganic silicon ash based sols are generated, and are aided with activated carbon, titanium dioxide, polyacrylamide strengthens it
The compactness and dilatancy of silicrete are formed when being heated, its fire resistance is improved；Wherein, the weight of silicon ash is raw material weight
25~35%, nine water sodium metasilicate are 12-18wt%, and potassium hydroxide is 5~7wt%, the amount concentration C of sodium ion in liquorNa +For
2mol·L-1, the amount concentration C of potassium ionK +For 2molL-1。
Silicon ash of the present invention can be directly commercially available in market, and its primary chemical mass percent composition is：SiO2：
86.18%, Al2O3：2.49%, MgO：1.95%, Fe2O3：1.85%, K2O：1.66%, CaO：1.61%, Na2O：1.18%,
TiO2：0.84%, SO3：0.38%, it is other：1.86%.
Activated carbon of the present invention is walnut shell activated carbon, 50.82 μm of particle mean size.
Polyacrylamide of the present invention is anionic white particle.
Embodiment 1：
The present embodiment provides a kind of chemical modification silicon ash base fire retarding wood composite coating, including following raw material：
Fine wollastonite powder 25wt%
Nine water sodium metasilicate 12wt%
Potassium hydroxide 5wt%
Titanium dioxide 4wt%
Polyacrylamide 1.5wt%
Activated carbon 5wt%
Water 47.5wt%
Its preparation comprises the following steps：
Silicon ash, activated carbon, polyacrylamide and titanium dioxide accurately are weighed, by the exciting agent sodium metasilicate and hydrogen-oxygen of formula ratio
Change potassium mixture to dissolve in gauge water, then mixed solution is placed in 60 DEG C of magnetic force heating stirring machine and stirs 30min, stir
Speed 1000r/min；Then the silicon ash of formula ratio is slowly added to mix and stir in mixer, about 15min is added, silicon ash base is made molten
Glue；The activated carbon, polyacrylamide and titanium dioxide of formula ratio are finally sequentially added, about 15min is added, with 1500r/min's
Speed is stirred for 20min, and it is composite coating finished product to stand.
Composite coating is coated in face veneer, its hot release performance is then detected, the results are shown in Table 1.
Embodiment 2：
The present embodiment provides a kind of chemical modification silicon ash base fire retarding wood composite coating, including following raw material：
Fine wollastonite powder 30wt%
Nine water sodium metasilicate 15wt%
Potassium hydroxide 6wt%
Titanium dioxide 5wt%
Polyacrylamide 1wt%
Activated carbon 4wt%
Water 44wt%
Preparation process be the same as Example 1, testing result is shown in Table 1.
Embodiment 3：
The present embodiment provides a kind of chemical modification silicon ash base fire retarding wood composite coating, including following raw material：
Fine wollastonite powder 35wt%
Nine water sodium metasilicate 18wt%
Potassium hydroxide 7wt%
Titanium dioxide 6wt%
Polyacrylamide 0.5wt%
Activated carbon 2wt%
Water 31.5wt%
Preparation process be the same as Example 1, testing result is shown in Table 1.
Table 1 coats the experimental result of composite coating sample (comparative example) of the present invention for 3 embodiment coating and without surface,
Therefrom the excellent fireproof performance of visible prepared coating, shows as Heat Release Rate of Materials and Total amount of heat release reduction, flaming combustion
Time shortens the extension with ignitor firing time.
The hot release performance of the embodiment of table 1 and comparative example
Claims (8)
1. a kind of chemical modification silicon ash base fire retarding wood composite coating, it is characterised in that be calculated in mass percent, including following original
Material：
The mass percent sum of raw material is 100%；
Exciting agent is using sodium metasilicate and the mixture of potassium hydroxide.
2. composite coating as claimed in claim 1, it is characterised in that the exciting agent includes mass percent 12%~18%
Sodium metasilicate and 5%~7% potassium hydroxide.
3. composite coating as claimed in claim 1, it is characterised in that the titanium dioxide coarseness is 0.15 μm~0.3 μm, granularity
The dispersion of distribution is 0.1~0.2, and oil-dispersing property is 40 μm~60 μm.
4. composite coating as claimed in claim 1, it is characterised in that the preparation method of the compound painting comprises the following steps：Will
The exciting agent of formula ratio dissolves in gauge water the silicon ash for added after first time stirring formula ratio and carries out second of stirring again,
Silicon ash based sols are made；Sequentially add and carried out after the activated carbon, titanium dioxide, polyacrylamide of formula ratio into silicon ash based sols
Third time is stirred, and is stood and is obtained composite coating.
5. composite coating as claimed in claim 4, it is characterised in that first time stirring condition is 60 DEG C~70 DEG C, 1000r/min
~1500r/min stirs 30min.
6. composite coating as claimed in claim 4, it is characterised in that the time lasting 15min that formula ratio silicon ash is added~
20min。
7. composite coating as claimed in claim 4, it is characterised in that activated carbon, titanium dioxide, the polyacrylamide of formula ratio add
Enter and total time continue 15min~20min.
8. composite coating as claimed in claim 4, it is characterised in that third time stirring condition is 1000r/min~1500r/min
Stir 20min~30min.
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| CN201710325122.1A CN107214799B (en) | 2017-05-10 | 2017-05-10 | A kind of chemical modification silicon ash base fire retarding wood composite coating |
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| CN201710325122.1A CN107214799B (en) | 2017-05-10 | 2017-05-10 | A kind of chemical modification silicon ash base fire retarding wood composite coating |
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| CN107214799A true CN107214799A (en) | 2017-09-29 |
| CN107214799B CN107214799B (en) | 2019-08-02 |
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| CN201710325122.1A Expired - Fee Related CN107214799B (en) | 2017-05-10 | 2017-05-10 | A kind of chemical modification silicon ash base fire retarding wood composite coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249881A (en) * | 2018-01-29 | 2018-07-06 | 黄河科技学院 | A kind of silicon-aluminum polymer coating and preparation method thereof |
| CN108640119A (en) * | 2018-05-29 | 2018-10-12 | 西安建筑科技大学 | A kind of inerting powder preparation method inhibiting starch detonation |
| CN109519087A (en) * | 2018-12-14 | 2019-03-26 | 广西祖昌门业有限公司 | Kitchen door special |
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| CN101077947A (en) * | 2007-06-01 | 2007-11-28 | 严家华 | Architectural decoration coating material and preparation method thereof |
| CN101492259A (en) * | 2008-01-21 | 2009-07-29 | 润弘精密工程事业股份有限公司 | Cementitious material for construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249881A (en) * | 2018-01-29 | 2018-07-06 | 黄河科技学院 | A kind of silicon-aluminum polymer coating and preparation method thereof |
| CN108640119A (en) * | 2018-05-29 | 2018-10-12 | 西安建筑科技大学 | A kind of inerting powder preparation method inhibiting starch detonation |
| CN109519087A (en) * | 2018-12-14 | 2019-03-26 | 广西祖昌门业有限公司 | Kitchen door special |
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| CN107214799B (en) | 2019-08-02 |
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Granted publication date: 20190802 |