CN116393344B - Preparation method of bamboo-based flame-retardant early warning coating - Google Patents
Preparation method of bamboo-based flame-retardant early warning coating Download PDFInfo
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- CN116393344B CN116393344B CN202310388433.8A CN202310388433A CN116393344B CN 116393344 B CN116393344 B CN 116393344B CN 202310388433 A CN202310388433 A CN 202310388433A CN 116393344 B CN116393344 B CN 116393344B
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 53
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 53
- 241001330002 Bambuseae Species 0.000 title claims abstract description 53
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 53
- 239000011425 bamboo Substances 0.000 title claims abstract description 53
- 239000003063 flame retardant Substances 0.000 title claims abstract description 29
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000011248 coating agent Substances 0.000 title claims abstract description 18
- 238000000576 coating method Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 50
- 230000004044 response Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 18
- 238000000151 deposition Methods 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 15
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 15
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 239000006059 cover glass Substances 0.000 claims description 7
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 6
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- SATVIFGJTRRDQU-UHFFFAOYSA-N potassium hypochlorite Chemical compound [K+].Cl[O-] SATVIFGJTRRDQU-UHFFFAOYSA-N 0.000 claims description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical group [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- 230000002792 vascular Effects 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 12
- 230000008021 deposition Effects 0.000 abstract description 11
- 239000002023 wood Substances 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 3
- 239000002028 Biomass Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a preparation method of a bamboo-based flame-retardant early-warning coating, which comprises the steps of pretreatment of a bamboo-based material, deposition of a response layer and deposition of a flame-retardant response layer, wherein the prepared bamboo-based flame-retardant early-warning coating has excellent fireproof performance (the combustion performance grade reaches B1 level), and has sensitive alarm speed when encountering fire (alarm is given out when encountering fire for 2 s). The bamboo-based composite material prepared by the method has very important practical significance for realizing the great popularization and application of the bamboo-wood composite material and realizing the sustainable development of the industry.
Description
Technical Field
The invention belongs to the field of biomass composite materials, and particularly relates to a manufacturing method of a bamboo-based flame-retardant early-warning coating.
Background
The bamboo-wood-based biomass composite material is widely applied to the fields of construction, interior decoration and the like due to the advantages of good physical and mechanical properties, green environment protection and the like, but the intrinsic flammability of the bamboo-wood-based biomass composite material greatly increases the fire safety hidden trouble. In order to prevent and reduce the occurrence of building fire, a series of mandatory national standards are issued in China, and the bamboo and wood and products thereof are required to reach the flame-retardant B1 level so as to be used in building and decoration. Therefore, if the bamboo-wood based composite material is not subjected to flame retardant treatment, the application range of the bamboo-wood based composite material is severely limited, and even the sustainable development of the bamboo-wood industry is affected.
At present, measures for reducing fire hazard mainly comprise two methods of passive flame retardant treatment and active fire monitoring. The passive flame retardant treatment improves the fireproof performance by adding a flame retardant or constructing a flame retardant coating on the surface; the active fire monitoring detects the temperature, humidity, smoke and other data changes of the fire scene through the sensor, and can give out an alarm in time when the fire happens, thereby providing precious time for personnel evacuation and fire suppression. However, the material subjected to the simple flame retardant treatment cannot sense the external condition, and the aim of fire prevention can be achieved only by carrying out mass treatment; only the early warning device is installed, the fire-retardant performance is not achieved, the fire-retardant fire-fighting equipment cannot be used after a fire attack, and waste of manpower and resources is caused.
Therefore, we consider that combining the two methods is currently the most effective method for improving the fire safety of bamboo-wood based composite materials.
Disclosure of Invention
The invention aims to solve the technical problems that: aiming at the problem that the bamboo-wood based composite material is easy to burn, the preparation method of the multifunctional composite coating with flame retardance, early warning and forecasting functions is provided.
The technical scheme adopted by the invention is as follows:
a preparation method of a bamboo-based flame-retardant early warning coating comprises the following steps:
(1) Pretreatment of bamboo-based materials
Cutting the bamboo-based material into test pieces with certain thickness, wherein the bottom area is recorded as s, and the thickness is recorded as n; boiling in water at 60-100 deg.c for night; preparing hypochlorite solution with the concentration of 1-8%, treating for 3-8 hours at 50-90 ℃, taking out and washing with water until the surface of the bamboo-based material is neutral; finally brushing off thin-wall cells with the thickness of 0.1-1 mm on the surface along the vascular bundle direction by using a brush to enable the surface to be grooved, and storing the treated bamboo-based material in water for later use;
(2) Depositing a response layer
Adhering the bamboo-based material treated in the step (1) to the bottom of a non-cover glass container, and adding titanium carbide MXene (Ti 2 C 3 Tx) suspension, the concentration of the titanium carbide suspension is between 0.1 and 5mg/ml, and volatilizing and depositing are carried out at the temperature of 20 to 60 ℃ until the water content of the bamboo-based material is dried to 5 to 12 percent, and the bamboo-based material is marked as MXene@bamboo-based material;
(3) Depositing a flame retardant response layer
Taking ammonium polyphosphate solution APP with the polymerization degree of less than 20 and the concentration of more than or equal to 5mg/ml and titanium carbide suspension MXene with the concentration of 0.1-5 mg/ml, and mixing the ammonium polyphosphate solution APP with the titanium carbide suspension MXene according to the volume ratio MXene: APP is less than or equal to 3:2, preparing binary suspension, which is marked as AM; then adding aqueous epoxy resin mixed glue EP, and mixing according to the volume ratio EP: AM <7:50, performing auxiliary dispersion on the ternary mixed solution by utilizing ultrasonic waves to obtain uniform suspension, and marking the uniform suspension as AME; and sticking MXene@bamboo-based material to the bottom of a non-cover glass container, adding AME with the volume of about 2-6 sn, and volatilizing and depositing at the temperature of 20-60 ℃ until the water content of the bamboo-based material is 5-12%, and marking the bamboo-based material as MXene/APP@bamboo-based material.
On the basis of the technical scheme, the temperature of the water boiled overnight in the step (1) is preferably 80 ℃, and the hypochlorite is sodium hypochlorite or potassium hypochlorite, and is preferably treated for 7 hours at 70 ℃.
Further, in the above step (2), 4sn by volume of titanium carbide MXene (Ti 2 C 3 Tx) suspension, preferably between 1mg/ml, is volatile deposited at a temperature of 50 ℃ until the moisture content of the bamboo-based material is dried to 7%.
Further, in the step (3), MXene@bamboo-based material is stuck to the bottom of the non-cover glass container, AME with the volume of 4sn is added, and the evaporation deposition is carried out under the condition that the temperature is 50 ℃ until the water content of the bamboo-based material is 7%.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the bamboo-based flame-retardant early-warning coating is prepared through 3 steps of pretreatment of the bamboo-based material, deposition of the response layer and deposition of the flame-retardant response layer, and the prepared bamboo-based flame-retardant early-warning coating has excellent fireproof performance (the combustion performance grade reaches B1 level) and sensitive alarm speed (alarm is given out when the fire is met for 2 s) through optimizing preparation process parameters and preferably preparing reagents. The bamboo-based composite material with high-efficiency flame retardance and sensitive temperature response has very important practical significance for realizing the great popularization and application of the bamboo-wood composite material and realizing the sustainable development of the industry.
Drawings
FIG. 1 is a schematic view of a bamboo material with grooves on the surface in the pretreatment of the bamboo material in the step (1) of the invention.
Detailed Description
To facilitate understanding of the present invention, examples are set forth below. It should be apparent to those skilled in the art that the examples are provided only to aid in understanding the present invention and should not be construed as limiting the invention in any way.
The various raw materials of the present invention may be obtained commercially unless specifically stated; or prepared according to methods conventional in the art. Unless defined or otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, any method and material similar or equivalent to those described may be used in the methods of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
A preparation method of a bamboo-based flame-retardant early warning coating comprises the following steps:
(1) Pretreatment of bamboo-based materials
Cutting the bamboo-based material into test pieces (square, round and the like) with certain thickness, wherein the bottom area is recorded as s, and the thickness is recorded as n; boiling in water at 60-100 deg.c for over night (80 deg.c is superior); hypochlorite solution (such as sodium hypochlorite and potassium hypochlorite) with concentration of 1-8% is prepared, treated for 3-8 h at 50-90 ℃, taken out and washed by water until the surface of the bamboo base material is neutral (70 ℃ and 7h are better). Finally, brushing off thin-wall cells with the thickness of 0.1-1 mm on the surface along the vascular bundle direction by using a brush, enabling the surface to be grooved (as shown in figure 1), and storing the treated bamboo-based material in water for later use.
(2) Depositing a response layer
The bamboo-based material is stuck on the bottom (square and round) of the uncovered glass container, and titanium carbide MXene (Ti) with the volume of about 2-6 sn (namely 2-6 times and 4 times better than the surface of the substrate) is added 2 C 3 Tx) suspension (purchased from Xinken technologies Co., ltd. In Buddha), the concentration of the titanium carbide suspension is between 0.1 and 5mg/ml (1 mg/ml of which has better response effect and is economical and applicable), and the suspension is volatilized and deposited under the condition of 20 to 60 ℃ at 50 ℃ until the water content of the bamboo-based material is dried to 5 to 12 percent (7 percent is preferred). Is denoted as MXene@bamboo-based material. Compared with other coating preparation processes, the technology achieves the aim of obtaining a firm coating without adding an organic solvent and an adhesive by preprocessing the bamboo-based material, and greatly improves the environmental protection of the preparation process.
(3) Depositing a flame retardant response layer
Ammonium polyphosphate solution APP (the polymerization degree is less than 20, the concentration is more than or equal to 5mg/ml, and the ammonium polyphosphate solution APP is purchased from national drug groups) and titanium carbide suspension MXene (0.1-5 mg/ml) are mixed according to a certain volume ratio (the volume ratio MXene: APP is less than or equal to 3:2), so as to prepare binary suspension, and the binary suspension is marked as AM. Then adding a proper amount of aqueous epoxy resin mixed glue EP (volume ratio of aqueous epoxy resin mixed glue: AM < 7:50), and carrying out auxiliary dispersion on the ternary mixed liquid by utilizing ultrasound to obtain a uniform suspension, and marking the uniform suspension as AME. Similarly, MXene@bamboo-based material is adhered to the bottom of a non-cover glass container, AME with a volume of about 2-6 sn (i.e., 2-6 times, preferably 4 times, the surface of the substrate) is added, and the material is volatilized and deposited at a temperature of 20-60 ℃ (preferably 50 ℃), until the water content of the bamboo-based material is between 5 and 12% (preferably 7%). Is marked as MXene/APP@bamboo-based material.
The combustion performance test and the early warning response test are carried out on the bamboo-based flame-retardant early warning coating prepared by the embodiment:
1. combustion performance test
The samples prepared under the conditions of the preferred and both end values were tested for combustion performance according to GB 8624-2012 classification of combustion performance of building materials and articles. The test results were as follows:
(1) When the volume of the deposition solution is 4sn and the volatilization temperature is 50 ℃, the ignition time is 15s, and the critical heat radiation energy of the sample is 8.6kw/m 2 Sample flame tip height within 20s<150mm, and no molten drop phenomenon from fire, and reaches the B1 (B) level.
(2) When the volume of the deposition solution is 2sn and the volatilization temperature is 20 ℃, the ignition time is 15s, and the critical heat radiation energy of the sample is 4.9kw/m 2 Sample flame tip height within 20s<150mm, no molten drop phenomenon from fire, and reaching B1 (C) level.
(3) When the volume of the deposition solution is 6sn and the volatilization temperature is 60 ℃, the ignition time is 15s, and the critical heat radiation energy of the sample is 9.4kw/m 2 Sample flame tip height within 20s<150mm, no molten drop phenomenon after leaving fire, and reaching B1 (B) level.
2. Early warning response test
The response test is carried out by respectively connecting 3 groups of samples prepared under the preferable condition and the two end value conditions with a direct current power supply (less than 36V) and an early warning lamp in series. The response test results were as follows:
(1) When the volume of the deposition solution is 4sn and the volatilization temperature is 50 ℃, an alarm is triggered within 2 seconds after the outer flame of the alcohol lamp attacks the sample.
(2) When the volume of the deposition solution is 2sn and the volatilization temperature is 20 ℃, an alarm is triggered within 10 seconds after the outer flame of the alcohol lamp attacks the sample.
(3) When the volume of the deposition solution is 6sn and the volatilization temperature is 60 ℃, the alarm is triggered within 3s after the outer flame of the alcohol lamp attacks the sample.
In conclusion, the bamboo-based material prepared by the method has good flame retardant property and sensitive fire early warning property.
While the invention has been described and illustrated in detail in the foregoing description with reference to specific embodiments thereof, it should be noted that various equivalent changes and modifications could be made to the above described embodiments without departing from the spirit of the invention as defined by the appended claims.
Claims (4)
1. The preparation method of the bamboo-based flame-retardant early-warning coating is characterized by comprising the following steps of:
(1) Pretreatment of bamboo-based materials
Cutting the bamboo-based material into test pieces with certain thickness, wherein the bottom area is recorded as s, and the thickness is recorded as n; boiling in water at 60-100 deg.c for night; preparing hypochlorite solution with the concentration of 1-8%, treating for 3-8 hours at 50-90 ℃, taking out and washing with water until the surface of the bamboo-based material is neutral; finally brushing off thin-wall cells with the thickness of 0.1-1 mm on the surface along the vascular bundle direction by using a brush to enable the surface to be grooved, and storing the treated bamboo-based material in water for later use;
(2) Depositing a response layer
Adhering the bamboo-based material treated in the step (1) to the bottom of a non-cover glass container, and adding titanium carbide MXene (Ti 2 C 3 T x ) The suspension, titanium carbide suspension concentration is between 0.1-5 mg/mL, volatilize and deposit under the temperature of 20-60 ℃ until the water content of the bamboo-based material is dried to 5-12%, and the bamboo-based material is marked as MXene@bamboo-based material;
(3) Depositing a flame retardant response layer
Taking ammonium polyphosphate solution APP with the polymerization degree of less than 20 and the concentration of more than or equal to 5mg/mL and titanium carbide suspension MXene with the concentration of 0.1-5 mg/mL, and mixing the ammonium polyphosphate solution APP with the titanium carbide suspension MXene according to the volume ratio MXene: APP is less than or equal to 3:2, preparing binary suspension, which is marked as AM; then adding aqueous epoxy resin mixed glue EP, and mixing according to the volume ratio EP: AM <7:50, performing auxiliary dispersion on the ternary mixed solution by utilizing ultrasonic waves to obtain uniform suspension, and marking the uniform suspension as AME; and sticking MXene@bamboo-based material to the bottom of a non-cover glass container, adding AME with the volume of 2-6 sn, and volatilizing and depositing at the temperature of 20-60 ℃ until the water content of the bamboo-based material is 5-12%, and marking the bamboo-based material as MXene/APP@bamboo-based material.
2. The method for preparing the bamboo-based flame-retardant early-warning coating according to claim 1, wherein the temperature of the water boiled in the step (1) is 80 ℃, the hypochlorite is sodium hypochlorite or potassium hypochlorite, and the treatment is carried out for 7 hours at 70 ℃.
3. The method for preparing the bamboo-based flame-retardant early-warning coating according to claim 1Characterized in that in the step (2), titanium carbide MXene (Ti) with the volume of 4sn is added 2 C 3 T x ) And the concentration of the titanium carbide suspension is 1mg/mL, and the titanium carbide suspension is volatilized and deposited at the temperature of 50 ℃ until the water content of the bamboo-based material is dried to 7%.
4. The method for preparing the bamboo-based flame-retardant early-warning coating according to claim 1, wherein in the step (3), MXene@bamboo-based material is stuck to the bottom of a non-cover glass container, AME with the volume of 4sn is added, and the bamboo-based material is volatilized and deposited under the condition that the temperature is 50 ℃ until the water content of the bamboo-based material is 7%.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112210156A (en) * | 2020-08-19 | 2021-01-12 | 宁夏师范学院 | Ceramic halogen-free flame-retardant polymer composite material and application thereof |
| DE102020112115A1 (en) * | 2020-05-05 | 2021-11-11 | Elringklinger Ag | Electrochemical cell |
| CN113717511A (en) * | 2021-09-27 | 2021-11-30 | 华北科技学院(中国煤矿安全技术培训中心) | Mxene-based flame-retardant unsaturated resin material and preparation method thereof |
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