CN107216691A - A kind of solid-solid phase change modified silicon ash base fire retarding wood composite coating - Google Patents
A kind of solid-solid phase change modified silicon ash base fire retarding wood composite coating Download PDFInfo
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- CN107216691A CN107216691A CN201710324999.9A CN201710324999A CN107216691A CN 107216691 A CN107216691 A CN 107216691A CN 201710324999 A CN201710324999 A CN 201710324999A CN 107216691 A CN107216691 A CN 107216691A
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- silicon ash
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
- C09D5/185—Intumescent paints
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Fireproofing Substances (AREA)
Abstract
The present invention proposes a kind of solid-solid phase change modified silicon ash base fire retarding wood composite coating, is calculated in mass percent, including following raw material：25%~30% silicon ash, 17%~22% exciting agent, 0.5%~2% rhodan ammonium, 0.5%~1.5% polyacrylamide, 2%~5% activated carbon, 0.5%~2% tung oil, 42.5%~50.5% water, the mass percent sum of raw material is 100%；Exciting agent is using nine water sodium metasilicate and the mixture of potassium hydroxide.The novelty of the present invention is to open with silicon ash, activated carbon, rhodan ammonium, polyacrylamide, and tung oil prepares silicate coating, 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 solid-solid phase-change modified silicon ash base
Fire retarding wood composite coating and preparation method thereof.
Background technology
Current indoor is fitted up and furniture is frequently with wood-based plates such as fiberboard, particle board and particieboards, its attractive in appearance, lightweight and is torn open
Dress is convenient, but inflammability causes major safety risks to human settlement, and coating anti-flaming dope can improve the passive fire-retardant of timber
Performance, the main filmogen of current aqueous architectural coating is aqueous polyurethane, water soluble acrylic acid and aqueous epoxide resin paint
Deng wherein aqueous polyurethane coating has been widely used because of its premium properties, in particular by the poly- ammonia of acrylic ester modified water-soluble
Ester emulsion prepares inexpensive, safe and nontoxic, environmentally friendly new coating, therefore the main focusing of preparation and research of water flame-proof paint
In organic film-forming material and the adhesive property of wood surface, and growth mechanism of the inorganic nano-particle in organic film-forming material
And fire retarding effect.But the research to inorganic silicon Sol SYSTEMS coating is less, lack using inorganic siliceous filmogen as the fire-retardant of base-material
The researches of fire proofing fire resistance under the preparation of wood coating and performance study, especially low temperature.
The content of the invention
In view of the deficienciess of the prior art, the present invention proposes a kind of new fire-retardant wood of solid-solid phase-change modified silicon ash base
Material composite coating and preparation method thereof.
To solve the above problems, the technical solution adopted by the present invention is：
A kind of solid-solid phase-change modified 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.
The exciting agent includes the sodium metasilicate and 5%~7% potassium hydroxide of mass percent 12%~15%.
The activated carbon is walnut shell activated carbon, 50.82 μm of particle mean size.
The polyacrylamide is anionic white particle.
The tung oil is in lurid transparency liquid.
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
Add and third time stirring is carried out after the activated carbon of formula ratio, rhodan ammonium, polyacrylamide, tung oil, stand and obtain compound painting
Material.
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, rhodan ammonium, polyacrylamide, the tung oil of formula ratio, which are added, continues 5min~8min total time.
Third time stirring condition is that 1000r/min~1500r/min stirs 10min~15min.
Compared with prior art, the present invention has following technique effect：
(1) novelty of the invention is to open with silicon ash, activated carbon, rhodan ammonium, polyacrylamide, prepared by tung oil
Silicate coating, researches and develops the new way of fire retarding wood coating.
(2) composite coating heat endurance prepared by the present invention is high, face veneer is coated onto, during burning, in gluing
When plate temperature reaches 90 DEG C or so, multiple phase transformation can occur for rhodan ammonium, and 140 DEG C or so can be changed into thiocarbamide, and 200 DEG C of ＜ is relatively low
Its fire resistance is given full play to when under temperature, can be effectively fire-retardant particularly with the material of relatively low ignition point, it is a kind of excellent low temperature
Anti-flaming dope.
(3) cost of raw material used in the present invention is cheap, environmental protection, can scale prepared using Industrial Solid Waste silicon ash it is fire-retardant
Wood coating, while also providing utilization ways for Industrial Solid Waste silicon ash.
(4) preparation method of the invention uses relatively low heating-up temperature, and preparation process is entered under normal temperature and pressure conditionses indoors
Row, 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, in addition as dispersant and synergistic
The polyacrylamide of flame-proof modifier, it contributes to silicon ash to develop into the finer and close unformed silicrete of structure, to a certain degree
On can improve the fire resistance of silicon ash base coating, but lower temperature (<200 DEG C) under, its fire resistance effect remain unchanged it is not good,
Therefore, inventor's long felt, it is desirable to be effectively improved the flame retardant effect of silicon ash base coating：Rhodan ammonium as one kind it is non-ignitable,
Inexpensively, enthalpy of phase change is higher, the less solid-solid phase change material of degree of supercooling, can be changed into thiocarbamide at 140 DEG C, thiocarbamide is after 180 DEG C
Thermal decomposition on solid-solid phase-change accumulation of heat influence it is smaller, rhodan ammonium lower temperature (<200 DEG C) there is excellent phase transition performance,
And finally can be formed the NH of anti-flammability by thermal decomposition3, but report is had no using its research for preparing anti-flaming dope.Due to
NH4SCN dissolves in alkaline solution, and can occur multiple phase transformation in lower temperature and be changed into thiocarbamide, and thiocarbamide is further being heated
During formed anti-flammability NH3With can be with O2The H of reaction2S；In addition, in Na2SiO3Ludox institute is prepared with KOH modified silicon ash
In the alkaline environment of formation, SCN-Can with rich in Na+、K+Silicon ash base amorphous substance ≡ Si-O-Si ≡ interact,
Promote amorphous ≡ Si-O-Si ≡ chains further wind, be crosslinked, the structure change process such as IPN, that is, improve silicrete
Densification degree.NH in theory4SCN can strengthen aqueous silicon ash base composite coating lower temperature (<200 DEG C) anti-flammability
Energy.
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, incorporation rhodan ammonium is aided with to improve its phase transformation fire resistance
Activated carbon, polyacrylamide and tung oil strengthen compactness, dilatancy and the water resistance that it forms silicrete when being heated, and improve it
Fireproofing passiveness validity；The wherein amount concentration C of sodium ion in liquorNa +For 2molL-1, the amount concentration C of potassium ionK +For
2mol·L-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.
Tung oil of the present invention is in lurid transparency liquid.
Embodiment 1：
The present embodiment provides a kind of solid-solid phase-change modified silicon ash base fire retarding wood composite coating, including following raw material：
Fine wollastonite powder 25wt%
Nine water sodium metasilicate 15wt%
Potassium hydroxide 5wt%
Rhodan ammonium 0.5wt%
Polyacrylamide 1.5wt%
Activated carbon 2wt%
Tung oil 0.5wt%
Water 50.5wt%
Comprise the following steps：
Silicon ash, activated carbon, polyacrylamide, tung oil and rhodan ammonium accurately are weighed, by the exciting agent sodium metasilicate of formula ratio
Dissolved in potassium hydroxide mixture in gauge water, then mixed solution is placed in 60 DEG C of magnetic force heating stirring machine and stirred
30min, mixing speed 1000r/min；Then the silicon ash of formula ratio is slowly added to mix and stir in mixer, about 15min is added, made
Obtain silicon ash based sols；Activated carbon, polyacrylamide, tung oil and the rhodan ammonium of formula ratio are finally sequentially added, about 5min is added,
10min is stirred for 1500r/min speed, it is composite coating finished product to stand.
Composite coating is coated in face veneer, its hot release performance is then tested, during burning, with face veneer
Multiple phase transformation can occur for the rising of temperature, rhodan ammonium, and 140 DEG C can be changed into thiocarbamide, and then decomposite anti-flammability gas NH3,
Its fire resistance is given full play to when compared with low temperature.
It the results are shown in Table 1.
Embodiment 2：
The present embodiment provides a kind of solid-solid phase-change modified silicon ash base fire retarding wood composite coating, including following raw material：
Fine wollastonite powder 30wt%
Nine water sodium metasilicate 12wt%
Potassium hydroxide 7wt%
Rhodan ammonium 1wt%
Polyacrylamide 0.5wt%
Activated carbon 5wt%
Tung oil 2wt%
Water 42.5wt%
Preparation process be the same as Example 1, testing result is shown in Table 1.
Comparative example 1：
This comparative example provides a kind of silicon ash base fire retarding wood composite coating, and raw material constitutes be the same as Example 1, and different is,
Do not include rhodan ammonium wherein.
Preparation process be the same as Example 1, testing result is shown in Table 1.
Comparative example 2：
This comparative example provides a kind of silicon ash base fire retarding wood composite coating, including following raw material：
Fine wollastonite powder 25wt%
Nine water sodium metasilicate 15wt%
Potassium hydroxide 5wt%
Rhodan ammonium 2.5wt%
Polyacrylamide 1wt%
Activated carbon 4wt%
Tung oil 1wt%
Water 47.5wt%
Preparation process be the same as Example 1, testing result is shown in Table 1.
As seen from Table 1 use " solid-solid phase change " modified silicon ash base anti-flaming dope, because rhodan ammonium lower temperature (<200
DEG C) there is excellent phase transition performance, appropriate rhodan ammonium can reduce the Total amount of heat release of sample simultaneously and improve its ignitor firing time
(embodiment), if but the excessive rhodan ammonium of incorporation be difficult to because causing dope viscosity too high wood surface formed completely,
Uniformly, continuous siliceous film layer, causes its ignitor firing time significantly to shorten (comparative example 2).
The hot release performance of the embodiment of table 1 and comparative example
Claims (7)
1. a kind of solid-solid phase-change modified silicon ash base fire retarding wood composite coating, it is characterised in that be 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.
2. composite coating as claimed in claim 1, it is characterised in that the exciting agent includes mass percent 12%~15%
Sodium metasilicate and 5%~7% potassium hydroxide.
3. composite coating as claimed in claim 1, it is characterised in that the preparation method of the compound painting comprises the following steps：
The exciting agent of formula ratio is dissolved in gauge water to the silicon ash for added after first time stirring formula ratio and carries out second again
Secondary stirring, is made silicon ash based sols；The activated carbon, rhodan ammonium, polyacrylamide of formula ratio are sequentially added into silicon ash based sols
Third time stirring is carried out after amine, tung oil, stands and obtains composite coating.
4. composite coating as claimed in claim 3, it is characterised in that first time stirring condition is 60 DEG C~70 DEG C, 1000r/min
~1500r/min stirs 30min.
5. composite coating as claimed in claim 3, it is characterised in that the time lasting 15min that formula ratio silicon ash is added~
20min。
6. composite coating as claimed in claim 3, it is characterised in that the activated carbon of formula ratio, rhodan ammonium, polyacrylamide,
Tung oil, which is added, continues 5min~8min total time.
7. composite coating as claimed in claim 3, it is characterised in that third time stirring condition is 1000r/min~1500r/min
Stir 10min~15min.
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| CN201710324999.9A CN107216691B (en) | 2017-05-10 | 2017-05-10 | A kind of solid-solid phase-change modified silicon ash base fire retarding wood composite coating |
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| CN201710324999.9A CN107216691B (en) | 2017-05-10 | 2017-05-10 | A kind of solid-solid phase-change modified silicon ash base fire retarding wood composite coating |
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| CN107216691A true CN107216691A (en) | 2017-09-29 |
| CN107216691B CN107216691B (en) | 2019-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483439A (en) * | 2018-05-29 | 2018-09-04 | 西安建筑科技大学 | A kind of inerting powder preparation method of quick inhibition wood powder detonation |
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2017
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Patent Citations (3)
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| US20060004130A1 (en) * | 2004-06-30 | 2006-01-05 | Strominger Michael G | Inverse emulsion polymer and method of use thereof |
| CN1731070A (en) * | 2005-09-16 | 2006-02-08 | 李建民 | Fluidized multiphase enhanced heat transfer method and heat transfer medium |
| CN106119653A (en) * | 2016-06-29 | 2016-11-16 | 北京态金科技有限公司 | A kind of phase-changing metal alloy, alloy constant temperature quilt and the preparation method of alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483439A (en) * | 2018-05-29 | 2018-09-04 | 西安建筑科技大学 | A kind of inerting powder preparation method of quick inhibition wood powder detonation |
| CN108483439B (en) * | 2018-05-29 | 2021-07-06 | 西安建筑科技大学 | Preparation method of inerting powder for rapidly inhibiting wood powder deflagration |
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| CN107216691B (en) | 2019-04-09 |
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