CN215512691U - Flame-retardant honeycomb plate - Google Patents
Flame-retardant honeycomb plate Download PDFInfo
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- CN215512691U CN215512691U CN202120467574.5U CN202120467574U CN215512691U CN 215512691 U CN215512691 U CN 215512691U CN 202120467574 U CN202120467574 U CN 202120467574U CN 215512691 U CN215512691 U CN 215512691U
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Abstract
The utility model belongs to the field of composite materials, and particularly relates to a flame-retardant honeycomb plate. This fire-retardant honeycomb panel includes aramid fiber honeycomb panel (1), upper melamine fiber product (2) and lower floor melamine fiber product (3), its characterized in that: the aramid fiber honeycomb plate (1) is arranged in the middle and serves as a core material; arranging an upper melamine fiber product (2) on the aramid fiber honeycomb plate (1) as an upper surface; the lower layer melamine fiber product (3) is arranged under the aramid fiber honeycomb plate (1) and serves as the lower surface. The honeycomb plate, the foam filling material and the like adopted in the utility model are all high flame retardant materials, and the prepared product flame retardant honeycomb plate inherits the high flame retardant property of the honeycomb plate and the foam filling material. The adopted surface layer is made of melamine fiber material, the density of the surface layer is far lower than that of the commonly adopted metal or mineral surface layer material, and the surface layer can be flexibly adjusted according to different use occasions to obtain better use performances, such as flame retardant property, decorative property, adhesive property and the like.
Description
Technical Field
The utility model belongs to the technical field of composite material preparation, and particularly relates to a flame-retardant honeycomb plate.
Background
Energy conservation is a trend of current social development, and in the field of building heat preservation, particularly filling of light houses and vehicle bulkheads, a large amount of honeycomb materials are applied, but because the honeycomb materials are in a hole structure, inherent defects exist in sound insulation and heat preservation, people usually cover surface layers on two sides of a honeycomb plate to improve the sound insulation and heat preservation performance of the honeycomb plate.
Because the flame retardant effect of gluing agent is relatively poor usually and can drop gradually along with the increase of service life, makes honeycomb material's sound insulation thermal insulation performance lose gradually, consequently the staff in this field begins to use foam to fill honeycomb plate honeycomb holes to obtain better and the stable sound insulation thermal insulation performance that lasts. However, most of the currently used foam materials, such as polystyrene foam and polyurethane foam, have poor flame retardancy and often have great potential safety hazards, and the commonly adopted filling method generally comprises the steps of firstly extruding and filling the foam into honeycomb holes through a press, and then applying glue on the surface of a core material to adhere the outer surface of the core material, so that the process is complicated, the flame retardant property of the adhesive is difficult to ensure, and the honeycomb holes are not tightly filled, so that the development of a honeycomb plate with good flame retardant property is required.
Disclosure of Invention
The utility model aims to provide a flame-retardant honeycomb plate aiming at the limitations of the existing foam-filled honeycomb plate, such as poor flame retardance and the like. The flame-retardant honeycomb plate is simple in structure, the surface layer of the honeycomb plate, the foam filling material and the honeycomb plate are all made of high flame-retardant materials, and the flame retardance is good.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
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A flame-retardant honeycomb plate comprises an aramid honeycomb plate, an upper melamine fiber product and a lower melamine fiber product, wherein the aramid honeycomb plate is arranged in the middle and used as a core material; arranging an upper melamine fiber product on the aramid fiber honeycomb plate to serve as an upper surface; and a lower layer melamine fiber product is arranged under the aramid fiber honeycomb plate and serves as a lower surface.
The lower melamine fiber product is of a two-layer structure, namely a melamine fiber product layer and a melamine rigid closed-cell foam resin layer, and the melamine rigid closed-cell foam resin layer is arranged above the melamine fiber product layer.
The honeycomb shape on the aramid fiber honeycomb plate is round, rectangular or hexagonal, preferably hexagonal.
The materials of the melamine fiber product on the upper layer and the melamine fiber product on the lower layer are melamine fiber woven fabric, melamine fiber and other fiber blended woven fabric, melamine fiber non-woven fabric or melamine fiber paper. Preferably, the melamine fiber is blended with the aramid fiber.
Preferably, the size of the lower layer melamine fiber product is (10-30) cm x (10-30) cm; the size of the aramid fiber honeycomb plate is (10-30) cm multiplied by (10-30) cm; the size of the melamine fiber product on the upper layer is (10-30) cm x (10-30) cm.
Preferably, the radius of the lower layer melamine fiber product is 5-15 cm; the radius of the aramid fiber honeycomb plate is 5-15 cm; the radius of the melamine fiber product on the upper layer is 5-15 cm.
As a further preference, the size of the lower layer melamine fiber product is 20cm × 10 cm; the size of the aramid fiber honeycomb plate is 20cm multiplied by 10 cm; the size of the melamine fiber product on the upper layer is 20cm multiplied by 10 cm.
Preferably, one layer close to the aramid fiber honeycomb plate is a melamine rigid closed-cell foam resin layer, and the thickness of the melamine rigid closed-cell foam resin layer is 0.3-0.6 mm.
Still more preferably, the thickness of the melamine rigid closed cell foam resin layer is 0.5 mm.
The preparation method of the flame-retardant honeycomb plate comprises the following steps: the preparation method comprises the steps of uniformly coating or spraying melamine closed-cell foam foaming resin on a melamine fiber product to serve as a lower surface layer, placing an aramid fiber honeycomb plate above the melamine closed-cell foam foaming resin to serve as a core material, finally placing a layer of melamine fiber product on the aramid fiber honeycomb plate to serve as an upper surface layer, laminating, heating, foaming, and continuously heating and curing to obtain the flame-retardant honeycomb plate.
In order to prevent the leakage of the foaming resin, the hot-pressing pressure is more than or equal to 0.5Mpa, the hot-pressing temperature is more than or equal to 70 ℃ so that the resin can be fully foamed and filled in the whole honeycomb gap, and the temperature is more than or equal to 100 ℃ during curing so that the melamine rigid foam is fully cured and the moisture generated in the foaming process is removed.
In order to obtain a thin and uniform layer of foamed resin on the melamine fiber product, the viscosity of the foamed resin can be appropriately reduced or the foamed resin can be applied by spraying.
All the raw materials in the application are commercial products, and the melamine rigid closed-cell foam foaming resin can also be prepared according to patent 201410494905.9.
Compared with the prior art, the utility model has the beneficial effects that:
the surface layer of the honeycomb plate, the foam filling material and the honeycomb plate are all made of high-flame-retardant materials, and the prepared flame-retardant honeycomb plate inherits the high flame-retardant performance of the materials.
And the adopted surface layer is made of melamine fiber material, the density of the surface layer is far lower than that of the commonly adopted metal or mineral surface layer material, and the surface layer can be flexibly adjusted according to different use occasions to obtain better use performance, such as flame retardant performance, decorative performance, adhesive performance and the like.
And the adopted surface layer and the adopted foaming resin layer are both melamine materials, and can be directly bonded through the bonding property of the foaming resin, no additional adhesive is needed, the preparation process is simple, and the melamine resin is not easy to fall off.
And (IV) the honeycomb plate has excellent flame retardant property and good heat and sound insulation effect, and can be applied to the fields of buildings, electrical appliances, vehicles and the like for heat insulation, sound insulation and heat preservation.
Description of the drawings:
fig. 1 is a schematic structural diagram of an upper melamine fiber product and an aramid fiber honeycomb panel in the flame-retardant honeycomb panel of the utility model.
Fig. 2 is a schematic structural view of the flame-retardant honeycomb panel of the present invention.
Fig. 3 is a schematic structural diagram of a lower melamine fiber product in the flame-retardant honeycomb panel of the utility model.
The composite plate comprises 1-aramid honeycomb plate, 2-upper layer melamine fiber product, 3-lower layer melamine fiber product, 3-2 melamine fiber product layer and 3-1 melamine rigid closed-cell foam resin layer.
Detailed Description
In order to facilitate an understanding of the inventive concepts of the present invention, reference will now be made to the following descriptions taken in conjunction with the accompanying drawings. It should not be understood that the scope of the above-described subject matter of the present invention is limited to the following examples.
All the raw materials in the application are commercial products, and the melamine rigid closed-cell foam foaming resin can also be prepared according to patent 201410494905.9.
Example 1:
a flame-retardant honeycomb plate comprises an aramid honeycomb plate, an upper melamine fiber product and a lower melamine fiber product, wherein the aramid honeycomb plate is arranged in the middle and used as a core material; arranging an upper melamine fiber product on the aramid fiber honeycomb plate to serve as an upper surface; and a lower layer melamine fiber product is arranged under the aramid fiber honeycomb plate and serves as a lower surface.
The lower melamine fiber product is of a two-layer structure, namely a melamine fiber product layer and a melamine rigid closed-cell foam resin layer, and the melamine rigid closed-cell foam resin layer is arranged above the melamine fiber product layer.
The honeycomb shape on the aramid fiber honeycomb plate is hexagonal.
The melamine fiber product on the upper layer and the melamine fiber product on the lower layer are both made of melamine fiber woven fabrics, and the size of the melamine fiber woven fabrics is 20cm x 10 cm.
The preparation method of the flame-retardant honeycomb plate comprises the following steps:
the manufacturing method comprises the steps of flatly paving and fixing a melamine fiber woven cloth with the size of 20cm by 10cm on a stainless steel plate, then uniformly spraying 15g of melamine rigid closed-cell foam foaming resin on the melamine fiber woven cloth, then flatly paving an aramid fiber honeycomb plate with the size of 20cm by 10cm on the melamine fiber woven cloth coated with the foaming resin, paving a melamine fiber woven cloth with the size of 20cm by 10cm on the upper surface of the aramid fiber honeycomb plate, and finally placing a stainless steel plate on the melamine fiber woven cloth.
Clamping two stainless steel plates, an aramid fiber honeycomb plate and melamine woven fabric by using a clamp, putting the stainless steel plates, the aramid fiber honeycomb plate and the melamine woven fabric into a 70 ℃ oven for heating for 30min, then heating to 100 ℃ for continuously heating for 60min, and removing the clamp and the stainless steel plates to obtain the flame-retardant honeycomb plate filled with the melamine rigid closed-cell foam.
The test shows that the density of the flame-retardant honeycomb plate is 92kg/m3Compression strength of 1.7MPa and flame-retardant grade GB 8624-B1.
Example 2:
a flame-retardant honeycomb plate comprises an aramid honeycomb plate, an upper melamine fiber product and a lower melamine fiber product, wherein the aramid honeycomb plate is arranged in the middle and used as a core material; arranging an upper melamine fiber product on the aramid fiber honeycomb plate to serve as an upper surface; and a lower layer melamine fiber product is arranged under the aramid fiber honeycomb plate and serves as a lower surface.
The lower melamine fiber product is of a two-layer structure, namely a melamine fiber product layer and a melamine rigid closed-cell foam resin layer, and the melamine rigid closed-cell foam resin layer is arranged above the melamine fiber product layer.
The honeycomb shape on the aramid fiber honeycomb plate is rectangular.
The melamine fiber product on the upper layer and the melamine fiber product on the lower layer are both made of melamine fiber paper. The radius of the melamine fiber paper is 10 cm.
The preparation method of the flame-retardant honeycomb plate comprises the following steps:
the method comprises the steps of flatly laying melamine fiber paper with the radius of 10cm and fixing the melamine fiber paper on a lower flat plate of a universal testing machine, then blade-coating a layer of melamine rigid closed-cell foam foaming resin with the thickness of 0.5mm on melamine fiber papermaking paper by using a wet film preparation device, flatly laying an aramid fiber honeycomb plate with the radius of 10cm on the melamine fiber papermaking paper coated with the foaming resin, then laying a piece of melamine fiber papermaking paper with the radius of 10cm on the upper surface of the aramid fiber honeycomb plate, finally lowering the upper flat plate of the universal testing machine to tightly press the honeycomb plate, and adjusting the pressure to 15 KN.
Wrapping the lower flat plate of the universal testing machine by using a heating tape, inserting a temperature sensor, electrifying and heating the heating tape to 70 ℃ for 30min, then lifting the upper flat plate of the universal testing machine, transferring the honeycomb plate into an oven, and continuously heating for 60min at 100 ℃ to obtain the flame-retardant honeycomb plate.
The test shows that the density of the flame-retardant honeycomb plate is 101kg/m3Compressive strength of 2.0MPa, flame retardant grade GB 8624-B1.
Example 3:
a flame-retardant honeycomb plate comprises an aramid honeycomb plate, an upper melamine fiber product and a lower melamine fiber product, wherein the aramid honeycomb plate is arranged in the middle and used as a core material; arranging an upper melamine fiber product on the aramid fiber honeycomb plate to serve as an upper surface; and a lower layer melamine fiber product is arranged under the aramid fiber honeycomb plate and serves as a lower surface.
The lower melamine fiber product is of a two-layer structure, namely a melamine fiber product layer and a melamine rigid closed-cell foam resin layer, and the melamine rigid closed-cell foam resin layer is arranged above the melamine fiber product layer.
The honeycomb shape on the aramid fiber honeycomb plate is circular.
The material of the melamine fiber product on the upper layer and the material of the melamine fiber product on the lower layer are both melamine fiber and aramid fiber blended fabric. The size of the melamine fiber and aramid fiber blended fabric is 40cm by 40 cm.
The preparation method of the flame-retardant honeycomb plate comprises the following steps:
the manufacturing method comprises the steps of flatly paving a melamine fiber and aramid fiber blended fabric with the size of 40cm by 40cm and fixing the melamine fiber and aramid fiber blended fabric on a four-column hydraulic press, uniformly spraying 160g of melamine rigid closed-cell foam foaming resin on the melamine fiber and aramid fiber blended fabric, then flatly paving an aramid honeycomb plate with the size of 40cm by 40cm on the melamine fiber and aramid fiber blended fabric coated with the foaming resin, paving a melamine fiber and aramid fiber woven fabric with the size of 40cm by 40cm on the upper surface of the aramid honeycomb plate, then lowering a flat plate on the four-column hydraulic press to compress materials and adjusting the pressure to 160 KN.
And starting to heat to 70 ℃ and keeping the temperature for 30min, and then heating to 100 ℃ and keeping the temperature for 100min to obtain the flame-retardant honeycomb plate.
The test shows that the density of the flame-retardant honeycomb plate is 95kg/m3Compression strength of 1.9MPa and flame-retardant grade GB 8624-B1.
Although the present invention has been described in detail with respect to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model encompassed by the appended claims.
Claims (8)
1. The utility model provides a fire-retardant honeycomb panel, includes aramid fiber honeycomb panel (1), upper melamine fiber product (2) and lower floor melamine fiber product (3), its characterized in that: the aramid fiber honeycomb plate (1) is arranged in the middle and serves as a core material; arranging an upper melamine fiber product (2) on the aramid fiber honeycomb plate (1) as an upper surface; the lower layer melamine fiber product (3) is arranged under the aramid fiber honeycomb plate (1) and serves as the lower surface.
2. The flame retardant honeycomb panel of claim 1, wherein: the lower melamine fiber product (3) is of a two-layer structure, namely a melamine fiber product layer (3-2) and a melamine rigid closed-cell foam resin layer (3-1), and the melamine rigid closed-cell foam resin layer (3-1) is arranged above the melamine fiber product layer (3-2).
3. The flame retardant honeycomb panel of claim 1, wherein: the honeycomb shape on the aramid fiber honeycomb plate (1) is round, rectangular or hexagonal.
4. The flame retardant honeycomb panel of claim 1, wherein: the size of the lower layer melamine fiber product (3) is 10-30cm multiplied by 10-30 cm; the size of the aramid fiber honeycomb plate (1) is 10-30cm multiplied by 10-30 cm; the size of the melamine fiber product (2) on the upper layer is 10-30cm multiplied by 10-30 cm.
5. The flame retardant honeycomb panel of claim 1, wherein: the radius of the lower layer melamine fiber product (3) is 5-15 cm; the radius of the aramid fiber honeycomb plate (1) is 5-15 cm; the radius of the melamine fiber product (2) on the upper layer is 5-15 cm.
6. The flame retardant honeycomb panel of claim 1, wherein: the size of the lower layer melamine fiber product (3) is 20cm multiplied by 10 cm; the size of the aramid fiber honeycomb plate (1) is 20cm multiplied by 10 cm; the size of the melamine fiber product (2) on the upper layer is 20cm multiplied by 10 cm.
7. The flame retardant honeycomb panel of claim 2, wherein: one layer close to the aramid fiber honeycomb plate (1) is a melamine rigid closed-cell foamed resin layer (3-1), and the thickness of the melamine rigid closed-cell foamed resin layer (3-1) is 0.3-0.6 mm.
8. The flame retardant honeycomb panel of claim 7, wherein: the thickness of the melamine rigid closed-cell foam resin layer (3-1) is 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120467574.5U CN215512691U (en) | 2021-03-04 | 2021-03-04 | Flame-retardant honeycomb plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120467574.5U CN215512691U (en) | 2021-03-04 | 2021-03-04 | Flame-retardant honeycomb plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114506098A (en) * | 2022-02-24 | 2022-05-17 | 四川金象赛瑞化工股份有限公司 | Resin-based fiber reinforced composite material for copper-clad plate and preparation method thereof |
-
2021
- 2021-03-04 CN CN202120467574.5U patent/CN215512691U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114506098A (en) * | 2022-02-24 | 2022-05-17 | 四川金象赛瑞化工股份有限公司 | Resin-based fiber reinforced composite material for copper-clad plate and preparation method thereof |
| CN114506098B (en) * | 2022-02-24 | 2023-07-21 | 四川金象赛瑞化工股份有限公司 | Resin-based fiber reinforced composite material for copper-clad plate and preparation method thereof |
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