CN115139590A - Preparation method of aerogel fiber composite board for bridge fire resistance - Google Patents
Preparation method of aerogel fiber composite board for bridge fire resistance Download PDFInfo
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- CN115139590A CN115139590A CN202210918346.4A CN202210918346A CN115139590A CN 115139590 A CN115139590 A CN 115139590A CN 202210918346 A CN202210918346 A CN 202210918346A CN 115139590 A CN115139590 A CN 115139590A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/04—Inorganic
- B32B2266/057—Silicon-containing material, e.g. glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- Engineering & Computer Science (AREA)
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Abstract
A preparation method of a aerogel fiber composite board for bridge fire resistance comprises the following steps: (1) Selecting a single-sided anodic oxidation pure aluminum plate and a silicon dioxide aerogel composite high silica fiber felt as raw materials; (2) Preparing a binder by taking phenolic resin liquid, acetylene black, silicon powder, a coupling agent, n-ethane and long and short cut basalt fibers as raw materials; (3) Uniformly coating the binder on the surface of an anodised aluminum oxide plate and attaching the binder to a silicon dioxide aerogel composite high silica fiber felt, and then applying certain pressure to the sandwich structure composite board blank; (4) And after the pressure is removed, transferring the sandwich structure composite board preform into an oven for segmented drying to prepare the aerogel fiber composite board. The invention provides technical support for the preparation of the fire-resistant material of the upper top plate of the lower layer of the double-layer bridge, and the prepared sandwich structure composite board has excellent tensile property and low thermal conductivity.
Description
Technical Field
The invention belongs to the technical field of fire-resistant materials, and particularly relates to a preparation method of a aerogel fiber composite board for bridge fire resistance.
Background
The steel structure is widely applied to large-span bridges due to the characteristics of light weight and high strength. With the increasing traffic volume, the construction of double-layer steel truss bridges is more and more. However, the fire resistance of the steel structure is poor, and its fire resistance limit is usually below 20min. In recent years, the traffic flow of bridges is rapidly increased, and the combustion and ignition events of vehicles caused by the traffic flow are increased. Vehicle fires, especially vehicle fires in the transportation of hazardous chemicals, pose a great deal of harm to bridge safety, so bridge fire prevention technology is more and more emphasized. As bridge fire prevention is a new field, the existing special bridge fire prevention material is seriously lacked. For a double-layer steel truss bridge, the fire risk of an upper top plate of a lower-layer bridge deck is particularly prominent.
The fire-resistant material for the double-layer steel truss bridge has the following requirements: firstly, the material has high-temperature stability, and can maintain stable fire-resistant and heat-insulating properties in a hydrocarbon fire environment at 1100 ℃; secondly, the heat conduction coefficient is low, effective heat insulation can be realized, and the surface of steel is protected from exceeding the damage temperature; thirdly, the paint has good weather resistance and can adapt to the high-humidity environment of the bridge; fourthly, the composite material has better mechanical property and low falling risk after installation. The main refractory felt material is poor in weather resistance, cannot meet the high-humidity environment of a bridge, is poor in mechanical property and high in falling risk after installation, and causes potential safety hazards to a lower lane of a double-layer steel truss bridge. The bridge fire-resistant material can bear hydrocarbon fire above 1100 ℃, and the conventional A2 fire-resistant plate has lower use temperature and can not meet the requirement. The composite board for protecting the upper top plate of the lower layer of the double-layer bridge is relatively simple in preparation process, excellent in mechanical property and low in heat conductivity.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a preparation method of a sandwich structure composite board for fire prevention, which provides technical support for the preparation of a fire-resistant material of an upper top plate of a lower layer of a double-layer bridge, and simultaneously, the influence of the using amount and pressure of a binder on the mechanical property and the thermal conductivity of the sandwich structure composite board is proved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the preparation method of the aerogel fiber composite board for bridge fire resistance comprises the following steps:
(1) Shearing a single-sided anodized pure aluminum plate with the thickness of 0.5-1 mm into a square plate, and simultaneously shearing a single-sided anodized pure aluminum plate with the thickness of 10mm and the density of 210kg/m 3 The silicon dioxide aerogel composite high silica fiber felt is also cut into square plates with the same size for use;
(2) Taking phenolic resin liquid, 500-mesh acetylene black, 400-mesh silicon powder, a coupling agent, n-ethane and 3mm long-short cut basalt fiber as raw materials, adding the acetylene black, the silicon powder, the coupling agent, the n-ethane and the long-short cut basalt fiber into the phenolic resin liquid, continuously stirring, transferring the mixed slurry into a ball mill, carrying out ball milling for 1-2h, and pouring out to obtain a binder;
(3) Taking the binder, uniformly coating the binder on the surface of an anodised aluminum oxide plate, then adhering two aluminum plates coated with the binder to a silicon dioxide aerogel composite high silica fiber felt in a processed mould, then applying pressure to a sandwich structure composite plate blank, and maintaining the pressure for 1h;
(4) And after the pressure is removed, transferring the sandwich structure composite board preform into an oven for sectional drying, heating at 60 ℃ for 24 hours, and then heating at 120 ℃ for 2 hours to prepare the aerogel fiber composite board.
Preferably, the shearing specifications of the single-sided anodized pure aluminum plate and the silica aerogel composite high silica fiber felt in the step (1) are both 300mm × 300mm.
Preferably, the phenolic resin liquid, the acetylene black, the silicon powder, the coupling agent, the n-ethane and the long and short cut basalt fibers are 50%,18%,12%,0.5%,0.5% and 19% respectively in percentage by mass.
Preferably, in the step (3), the amount of the binder added is 40 to 60g.
Preferably, the pressure applied to the sandwich structure composite panel blank in the step (3) is 400N to 600N.
The invention has the following advantages: the method selects a single-sided anodic oxidation pure aluminum plate and a silicon dioxide aerogel composite high silica fiber felt as raw materials, selects a phenolic resin-based binder, attaches two aluminum plates with the binder to the silicon dioxide aerogel composite high silica fiber felt to prepare the gas outlet gel fiber composite plate, and discusses the influence of the binder dosage and the pressure applied on a blank on the mechanical property and the thermal conductivity of the sandwich structure composite plate. Through tests, the sandwich structure composite board has excellent tensile property and low thermal conductivity.
Drawings
FIG. 1 is an optical photograph of the side of a sandwich structured composite sheet.
FIG. 2 is a room temperature force-displacement curve of a sandwich structured composite panel.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1:
a preparation method of a sandwich structure composite board for fire prevention comprises the following steps:
(1) Shearing a single-sided anodized pure aluminum plate with the thickness of 0.5 mm-1 mm into a plate with the thickness of 300mm multiplied by 300mm, and simultaneously shearing a single-sided anodized pure aluminum plate with the thickness of 10mm and the density of 210kg/m 3 The silicon dioxide aerogel composite high silica fiber felt is also cut into plates with the size of 300mm multiplied by 300mm for use.
(2) The phenolic resin liquid, 500-mesh acetylene black, 400-mesh silicon powder, a coupling agent, n-ethane and 3mm long-short cut basalt fiber are taken as raw materials, and the mass percentages of the raw materials are respectively 50%,18%,12%,0.5%,0.5% and 19%. Adding acetylene black, silicon powder, a coupling agent, n-ethane and long and short cut basalt fibers into the phenolic resin liquid, continuously stirring, then transferring the mixed slurry into a ball mill for ball milling for 1-2h, and pouring out to obtain the binder.
(3) And (3) taking 40g of the binder, uniformly coating the binder on the surface of an anodised aluminum oxide plate, then adhering two aluminum plates coated with the binder to the silicon dioxide aerogel composite high silica fiber felt in a processed mould, then applying 400-600N pressure to the sandwich structure composite plate blank, and maintaining the pressure for 1h.
(4) And after the pressure is removed, transferring the sandwich structure composite board preform into an oven for sectional drying, heating at 60 ℃ for 24 hours, and then heating at 120 ℃ for 2 hours to prepare the aerogel fiber composite board.
Example 2:
(1) Shearing a single-sided anodized pure aluminum plate with the thickness of 0.5 mm-1 mm into a plate with the thickness of 300mm multiplied by 300mm, and simultaneously shearing a single-sided anodized pure aluminum plate with the thickness of 10mm and the density of 210kg/m 3 The silica aerogel composite high silica fiber felt of (2) was also cut into a 300mm × 300mm plate for use.
(2) The phenolic resin liquid, 500-mesh acetylene black, 400-mesh silicon powder, a coupling agent, n-ethane and 3mm long-short cut basalt fiber are taken as raw materials, and the mass percentages of the raw materials are respectively 50%,18%,12%,0.5%,0.5% and 19%. Adding acetylene black, silicon powder, a coupling agent, n-ethane and long and short cut basalt fibers into the phenolic resin liquid, continuously stirring, then transferring the mixed slurry into a ball mill for ball milling for 1-2h, and pouring out to obtain the binder.
(3) Taking 50g of the binder, uniformly coating the binder on the surface of an anodised aluminum oxide plate, then pasting two aluminum plates coated with the binder on a silicon dioxide aerogel composite high silica fiber felt in a processed mould, then applying 400-600N pressure to the sandwich structure composite plate blank, and maintaining the pressure for 1h.
(4) And after the pressure is removed, transferring the sandwich structure composite board preform into an oven for sectional drying, heating at 60 ℃ for 24 hours, and then heating at 120 ℃ for 2 hours to prepare the aerogel fiber composite board.
Example 3:
(1) Shearing a single-sided anodized pure aluminum plate with the thickness of 0.5 mm-1 mm into a plate with the thickness of 300mm multiplied by 300mm, and simultaneously shearing a single-sided anodized pure aluminum plate with the thickness of 10mm and the density of 210kg/m 3 The silicon dioxide aerogel composite high silica fiber felt is also cut into plates with the size of 300mm multiplied by 300mm for use.
(2) The phenolic resin liquid, 500-mesh acetylene black, 400-mesh silicon powder, a coupling agent, n-ethane and 3mm long-short cut basalt fiber are taken as raw materials, and the mass percentages of the raw materials are respectively 50%,18%,12%,0.5%,0.5% and 19%. Adding acetylene black, silicon powder, a coupling agent, n-ethane and long and short cut basalt fibers into a phenolic resin liquid, continuously stirring, then transferring the mixed slurry into a ball mill for ball milling for 1-2h, and pouring out to obtain the binder.
(3) 60g of the binder is taken and evenly coated on the surface of an anodised aluminum oxide plate, then two aluminum plates coated with the binder are attached to the silicon dioxide aerogel composite high silica fiber felt in a processed mould, then 400N-600N pressure is applied to the sandwich structure composite plate blank, and the pressure is maintained for 1h.
(4) And after the pressure is removed, transferring the sandwich structure composite board preform into an oven for sectional drying, heating at 60 ℃ for 24 hours, and then heating at 120 ℃ for 2 hours to prepare the aerogel fiber composite board.
Figure 1 is an optical photograph of the side of a sandwich composite panel. FIG. 2 is a room temperature force-displacement curve of a sandwich structured composite panel with a binder dosage of 40 g.
The sandwich-structured composite sheets prepared using 1mm aluminum sheets were subjected to mechanical property and thermal conductivity tests as shown in tables 1 and 2. As can be seen from Table 1, the tensile strength at room temperature of the sandwich structure composite board exceeds 2720N/25mm; as can be seen from Table 2, the cell thermal conductivity of the sandwich structured composite sheet was 0.017W/m.K. Overall, the amount of binder present does not greatly affect the tensile strength and thermal conductivity of sandwich-structured composite panels.
TABLE 1 tensile Strength at Room temperature of Sandwich-structured composite sheets
| Amount of Binder (g) | 40 | 50 | 60 |
| Tensile Strength (N/25 mm) | 2720 | 2743 | 2757 |
Table 2 room temperature thermal conductivity of sandwich structured composite sheet
| Amount of Binder (g) | 40 | 50 | 60 |
| Thermal conductivity (W/m. K) | 0.0171 | 0.0174 | 0.0175 |
While the invention has been shown and described with reference primarily to certain embodiments thereof, it will be understood by those skilled in the art that various changes in construction and details may be made therein without departing from the scope of the invention encompassed by the appended claims. The scope of the invention is, therefore, indicated by the appended claims, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. The preparation method of the aerogel fiber composite board for bridge fire resistance is characterized by comprising the following steps:
(1) Shearing a single-sided anodized pure aluminum plate with the thickness of 0.5-1 mm into a square plate, and simultaneously shearing a single-sided anodized pure aluminum plate with the thickness of 10mm and the density of 210kg/m 3 The silicon dioxide aerogel composite high silica fiber felt is also cut into square plates with the same size for use;
(2) Taking phenolic resin liquid, acetylene black of 500 meshes, silicon powder of 400 meshes, a coupling agent, n-ethane and long and short cut basalt fibers of 3mm as raw materials, adding the acetylene black, the silicon powder, the coupling agent, the n-ethane and the long and short cut basalt fibers into the phenolic resin liquid, continuously stirring, then transferring the mixed slurry into a ball mill for ball milling for 1-2h, and pouring out to prepare a binder;
(3) Taking the binder, uniformly coating the binder on the surface of an anodised aluminum oxide plate, then adhering two aluminum plates coated with the binder to a silicon dioxide aerogel composite high silica fiber felt in a processed mould, then applying pressure to a sandwich structure composite plate blank, and maintaining the pressure for 1h;
(4) And after the pressure is removed, transferring the sandwich structure composite board preform into an oven for sectional drying, heating at 60 ℃ for 24 hours, and then heating at 120 ℃ for 2 hours to prepare the aerogel fiber composite board.
2. The method for preparing a sandwich structured composite board for fire protection as claimed in claim 1, wherein the shear specification of the single-sided anodized pure aluminum plate and the silica aerogel composite high silica fiber felt in step (1) are 300mm x 300mm.
3. The method for preparing the sandwich structure composite board for fire prevention according to claim 1, wherein the phenolic resin liquid, the acetylene black, the silicon powder, the coupling agent, the n-ethane and the long and short cut basalt fiber in the step (2) respectively account for 50%,18%,12%,0.5%,0.5% and 19% in mass percentage.
4. The method for preparing a fire-proof sandwich structure composite board according to claim 1, wherein the binder is added in an amount of 40g to 60g in the step (3).
5. The method of claim 1, wherein the pressure applied to the sandwich structure composite board blank in the step (3) is 400N to 600N.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210918346.4A CN115139590A (en) | 2022-08-01 | 2022-08-01 | Preparation method of aerogel fiber composite board for bridge fire resistance |
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| CN202210918346.4A CN115139590A (en) | 2022-08-01 | 2022-08-01 | Preparation method of aerogel fiber composite board for bridge fire resistance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027168A1 (en) * | 2022-07-31 | 2024-02-08 | 广东省公路建设有限公司湾区特大桥养护技术中心 | Enhanced high-silica fiber composite aerogel fireproof material and preparation method therefor |
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| CN205767834U (en) * | 2016-06-30 | 2016-12-07 | 上海澍澎新材料科技有限公司 | A kind of aeroge integrated board with insulated fire sound insulation and decoration functions |
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| CN112677580A (en) * | 2021-01-06 | 2021-04-20 | 成都希瑞方晓科技有限公司 | Fireproof heat insulation plate and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027168A1 (en) * | 2022-07-31 | 2024-02-08 | 广东省公路建设有限公司湾区特大桥养护技术中心 | Enhanced high-silica fiber composite aerogel fireproof material and preparation method therefor |
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