CN215283801U - Injection-molded multilayer flame-retardant fireproof structural member - Google Patents
Injection-molded multilayer flame-retardant fireproof structural member Download PDFInfo
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- CN215283801U CN215283801U CN202120338954.9U CN202120338954U CN215283801U CN 215283801 U CN215283801 U CN 215283801U CN 202120338954 U CN202120338954 U CN 202120338954U CN 215283801 U CN215283801 U CN 215283801U
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Abstract
The utility model discloses the anti fire prevention structure that delays of ejection of compact's multilayer includes supporting layer and two fire-retardant layers. The support layer is made of a porous fiber fabric. The support layer has a first face and a second face opposite the first face. The two flame-retardant layers are respectively made of thermoplastic flame-retardant high polymer materials. The two flame-retardant layers are respectively coated on at least the first surface and the second surface of the supporting layer by injection molding.
Description
Technical Field
The utility model relates to a fire prevention structural part, especially about the anti fire prevention structural part that delays of ejection moulding's multilayer.
Background
The existing fiber composite material has good mechanical properties such as high strength, low density and the like, and is widely applied to the fields of aerospace, railways, mechanical manufacturing, buildings and the like. The fiber composite material has flame retardance, so that fire retardance and fire delay are important development directions of the existing flame-retardant fiber composite material.
Generally, inorganic compounds are more flame-retardant and fireproof materials than organic compounds, so that a multi-layer structure formed by compounding inorganic compounds and organic compounds generally uses an inorganic compound layer as a design facing a fire source to achieve the purpose of fire prevention.
At present, most of common multilayer flame-retardant structures are formed into plates in a hot-press forming mode, and complicated structural designs such as reinforcing ribs, screw columns and the like cannot be formed, so that the application range and conditions of the common multilayer flame-retardant structures are greatly limited. The other multilayer flame retardant material is prepared by coating a thermosetting composite material on an inorganic plate (such as a calcium silicate plate, a stainless steel plate and the like), and through the fireproof characteristic of the inorganic plate, flame burnthrough can be avoided, but the thermosetting material cannot be recycled, so that burden is caused to the environment.
Therefore, it is an important issue to provide a structural member having a complicated structural design, excellent fire retardant properties, and effective recycling.
SUMMERY OF THE UTILITY MODEL
The utility model provides an anti fire prevention structure that delays of ejection of compact's multilayer lies in the technical problem that will solve: the current multilayer flame retardant structure cannot have a complex structure and cannot be effectively recycled and reused.
The utility model provides an anti fire prevention structure that delays of ejection of compact's multilayer, including supporting layer and two fire-retardant layers. The support layer is made of a porous fiber fabric. The support layer has a first face and a second face opposite the first face. The two flame-retardant layers are respectively made of thermoplastic flame-retardant high polymer materials. The two flame-retardant layers are respectively coated on at least the first surface and the second surface of the supporting layer by injection molding.
In an embodiment of the present invention, the thermoplastic flame retardant polymer is a semi-crystalline thermoplastic polymer or an amorphous thermoplastic polymer.
In an embodiment of the present invention, the porous fiber fabric is a short fiber fabric, a long fiber fabric, a woven fiber fabric, a non-woven fabric, a unidirectional fiber fabric, a multi-axial multi-layer fabric, or a combination thereof.
In an embodiment of the present invention, the mesh number of the porous fiber fabric is between 100-5000.
In an embodiment of the present invention, the porous fiber fabric is made of graphite fiber, graphene fiber, carbon fiber, glass fiber, ceramic fiber, boron-nitrogen fiber, silicon nitride fiber, mineral salt fiber, aromatic polyamide fiber, aramid synthetic fiber, or a combination thereof.
In an embodiment of the present invention, the thermoplastic flame-retardant polymer material includes: polyamide, wherein the polyamide is nylon 6, nylon 66 or a combination thereof, and the weight percentage of the polyamide is 17.7 to 27.7 percent; the lubricant accounts for 0.1 to 2.5 percent by weight; the antioxidant accounts for 0.1 to 2.5 percent by weight; the surfactant accounts for 0.1 to 2.5 percent by weight; the heat conduction enhancement modifier contains magnesium oxide, and the weight percentage of the heat conduction enhancement modifier is 65-75%; and the flame retardant is a phosphorus-nitrogen halogen-free flame retardant or a halogen flame retardant, and accounts for 7 to 12 percent by weight.
In one embodiment of the present invention, the injection molded multi-layer flame retardant fire resistant structure has a flame retardant rating of UL94-5 VA.
In an embodiment of the present invention, at least one of the two flame-retardant layers is formed with a plurality of first ribs extending along a first direction on a side different from the supporting layer by injection molding.
In another embodiment of the present invention, the flame retardant layer formed with the plurality of first ribs is further formed with a plurality of second ribs extending along a second direction orthogonal to the first direction by injection molding, and the plurality of second ribs and the plurality of first ribs are connected to each other in an interlaced manner. Above-mentioned first rib and second rib structure are favorable to structural strength's promotion and then increase the intensity of protection.
In another embodiment of the present invention, at least one of the two flame-retardant layers is formed with a plurality of screw studs on a side different from the supporting layer by injection molding. This screw post structure is favorable to the utility model discloses assemble with other structures or part and combine.
Based on the above, in the above embodiments of the present invention, the flame retardant layer is made of the thermoplastic flame retardant polymer material, so that the flame retardant layer can be effectively recycled. The fire-retardant grade of the thermoplastic flame-retardant high polymer material is certified by UL94-5VA, so that the flame-retardant layers made of the thermoplastic flame-retardant high polymer material are arranged on two outer sides of the multi-layer flame-retardant fire-resistant structural member, and the purpose of fire prevention can be effectively achieved no matter a fire source is positioned on any side of the multi-layer flame-retardant fire-resistant structural member. Besides, the flame-retardant layer made of thermoplastic flame-retardant high polymer materials can bear the flame of 1000 ℃ and can be directly roasted without being penetrated by the flame except for obtaining the UL94-5VA flame-retardant grade, and can generate a carbonized layer structure after being roasted by the flame, so that the flame can be further effectively blocked, the supporting layer positioned in the middle can provide structural strength, the multilayer flame-retardant fire-retardant structural member still keeps a complete structure under the roasting of the flame, and the flame-retardant layer without being contacted with the flame on the other side can not be penetrated by the flame and can not generate the carbonized layer structure. In addition, the two flame-retardant layers are respectively coated on the first surface and the second surface of the supporting layer through injection molding, have design elasticity, can be directly molded into a complex shape, are different from the embarrassment that the traditional hot-press molding can only form a plate, and are beneficial to the structural design of a product.
Drawings
FIG. 1 is an exploded view of a first embodiment of an injection molded multi-layer fire resistant structure of the present invention.
FIG. 2 is a schematic cross-sectional view of a first embodiment of the injection molded multi-layer flame retardant fire resistant structural member of the present invention.
FIG. 3 is a schematic exterior view of a second embodiment of an injection molded multi-layer flame retardant fire resistant structural member of the present invention.
FIG. 4 is a schematic exterior view of a third embodiment of an injection molded multi-layer flame retardant fire resistant structural member of the present invention.
FIG. 5 is a schematic exterior view of a fourth embodiment of an injection molded multi-layer flame retardant fire resistant structural member of the present invention.
Description of reference numerals: 10-support layer, 11-first face, 12-second face, 20-flame retardant layer, 21-first rib, 22-second rib, 23-stud.
Detailed Description
Referring to fig. 1 and 2, an explosion diagram and a cross-sectional diagram of a first embodiment of the injection-molded multi-layer fire-retardant structure of the present invention are shown, in which the injection-molded multi-layer fire-retardant structure of the present embodiment includes a support layer 10 and at least two flame-retardant layers 20.
The support layer 10 is formed of a porous fiber fabric, and the support layer 10 has a first side 11 and a second side 12 opposite to the first side 11. The porous fiber fabric may be a short fiber fabric, a long fiber fabric, a woven fiber fabric, a non-woven fabric, a unidirectional fiber fabric, a multiaxial multilayer fabric, or a combination thereof. In addition, the mesh number of the porous fiber fabric can be between 100 and 5000. Further, the porous fiber fabric may be composed of graphite fibers, graphene fibers, carbon fibers, glass fibers, ceramic fibers, boron-nitrogen fibers, silicon nitride fibers, mineral salt fibers, aromatic polyamide fibers, aramid synthetic fibers, or a combination thereof.
The two flame retardant layers 20 are each made of a thermoplastic flame retardant polymer material, and the two flame retardant layers 20 are respectively injection molded to cover at least the first surface 11 and the second surface 12 of the support layer 10. In the embodiment, one of the two flame retardant layers 20 is coated on the first surface 11 of the supporting layer 10 by a polymer injection molding process, and the other flame retardant layer 20 is coated on the second surface 12 of the supporting layer 10 by a polymer injection molding process, that is, the two flame retardant layers 20 are respectively located on two opposite sides of the supporting layer 10, and then cross-linked to form a sandwich multi-layer structure as shown in fig. 2, and since the flame retardant layer 20 is made of a thermoplastic flame retardant polymer material, the flame retardant layer 20 can be effectively recycled and reused.
The thermoplastic flame-retardant polymer material can be a semi-crystalline thermoplastic polymer material compound or a non-crystalline thermoplastic polymer material compound. Furthermore, the thermoplastic flame-retardant high polymer material comprises polyamide, a lubricant, an antioxidant, a surfactant, a heat conduction enhancement modifier and a flame retardant. The polyamide is nylon 6, nylon 66 or the combination of the nylon 6 and the nylon 66, and the weight percentage of the polyamide is 17.7 to 27.7 percent. The lubricant accounts for 0.1 to 2.5 percent by weight. The antioxidant accounts for 0.1 to 2.5 percent by weight. The weight percentage of the surfactant is 0.1 to 2.5 percent. The heat conduction enhancing modifier contains magnesium oxide, and the weight percentage of the heat conduction enhancing modifier is 65-75%. The flame retardant is phosphorus-nitrogen halogen-free flame retardant or halogen flame retardant, and the weight percentage of the flame retardant is 7-12%.
Because the thermoplastic flame-retardant high polymer material has the fireproof effect which is not inferior to that of an inorganic compound, and the fireproof grade of the thermoplastic flame-retardant high polymer material is certified by UL94-5VA, the flame-retardant layers 20 made of the thermoplastic flame-retardant high polymer material are arranged on the two outer sides of the multi-layer flame-retardant fireproof structural member, and the purpose of fire prevention can be effectively achieved no matter whether a fire source is positioned on any side of the multi-layer flame-retardant fireproof structural member.
Furthermore, the flame retardant layer 20 made of thermoplastic flame retardant polymer material can bear the flame of 1000 ℃ to be directly roasted without being penetrated by the flame except for obtaining UL94-5VA flame retardant rating, and can generate a carbonized layer structure after being roasted by the flame, so that the flame can be further effectively blocked, the support layer 10 positioned in the middle can provide structural strength, the multilayer flame retardant fireproof structural member still keeps a complete structure under the flame roasting, and the flame retardant layer 20 without being contacted with the flame on the other side can not be penetrated by the flame and can not generate the carbonized layer structure.
In addition, the two flame retardant layers 20 are respectively coated on the first surface 11 and the second surface 12 of the supporting layer 10 by injection molding, and have design elasticity, which can be directly molded into a complex shape, which is different from the conventional hot press molding, which can only form a plate, and is beneficial to the product structure design, which will be described in detail later.
Referring to fig. 3, an appearance of a second embodiment of the injection-molded multi-layer fire-retardant structure of the present invention is shown, the structure of the present embodiment is substantially the same as that of the first embodiment, and the difference is: at least one of the two flame retardant layers 20 is formed with a plurality of first ribs 21 extending along a first direction on a side of the flame retardant layer 20 different from the supporting layer 10 by injection molding. In other words, one of the two flame retardant layers 20 is not only coated on the supporting layer 10 by the polymer injection molding process, but also a plurality of first ribs 21 are formed on a side different from the supporting layer 10, and the first direction in this embodiment can be the length direction of the multi-layer flame retardant structure, and the plurality of first ribs 21 extend parallel to each other.
Referring to fig. 4, an appearance of the injection molded multi-layer fire-retardant structure of the present invention is schematically shown, the structure of the present embodiment is substantially the same as that of the second embodiment, and the difference is: the flame retardant layer 20 formed with a plurality of first ribs 21 is injection molded to form a plurality of second ribs 22 extending along a second direction orthogonal to the first direction, and the plurality of second ribs 22 and the plurality of first ribs 21 are connected to each other in an interlaced manner. The second direction in this embodiment can be the width direction of the multi-layer flame retardant structure, and the plurality of second ribs 22 extend parallel to each other to form a lattice structure with the plurality of first ribs 21. The first rib 21 and the second rib 22 are beneficial to improving the structural strength and increasing the protection strength.
Referring to fig. 5, an appearance of the fourth embodiment of the injection molded multi-layer fire-retardant structure of the present invention is shown, the structure of the present embodiment is substantially the same as that of the third embodiment, and the difference is: at least one of the two flame retardant layers 20, in this embodiment, the flame retardant layer 20 is formed with a plurality of first ribs 21 and a plurality of second ribs 22, and a plurality of screw studs 23 are further formed on a side different from the side of the support layer 10, that is, the side formed with the plurality of first ribs 21 and the plurality of second ribs 22, by injection molding. In this embodiment, the plurality of studs 23 are formed at a plurality of positions among the plurality of staggered connections between the plurality of second ribs 22 and the plurality of first ribs 21. The screw column 23 structure is favorable for the utility model discloses assemble and combine with other structures or part
To sum up, the utility model discloses the anti fire prevention structure that delays of ejection of compact's multilayer that above-mentioned embodiment provided relies on fire-retardant layer 20 to constitute by thermoplastic fire-retardant macromolecular material, so can effectively retrieve and cyclic utilization. The fire-retardant grade of the thermoplastic flame-retardant high polymer material is certified by UL94-5VA, so that the flame-retardant layers 20 made of the thermoplastic flame-retardant high polymer material are arranged on two outer sides of the multi-layer flame-retardant structure, and the purpose of fire prevention can be effectively achieved no matter the fire source is positioned on any side of the multi-layer flame-retardant structure. Furthermore, the flame retardant layer 20 made of thermoplastic flame retardant polymer material can bear the flame of 1000 ℃ to be directly roasted without being penetrated by the flame except for obtaining UL94-5VA flame retardant rating, and can generate a carbonized layer structure after being roasted by the flame, so that the flame can be further effectively blocked, the support layer 10 positioned in the middle can provide structural strength, the multilayer flame retardant fireproof structure still keeps a complete structure under the flame roasting, and the flame retardant layer without being contacted with the flame on the other side can not be penetrated by the flame and can not generate the carbonized layer structure. In addition, the two flame retardant layers 20 are respectively coated on the first surface 11 and the second surface 12 of the support layer 10 by injection molding, have design elasticity, can be directly molded into a complex shape, are different from the embarrassment that the traditional hot press molding can only form a plate, and are beneficial to the structural design of a product.
Claims (9)
1. An injection molded, multi-layer, fire resistant structure, comprising:
a support layer formed by a porous fiber fabric, wherein the support layer is provided with a first surface and a second surface opposite to the first surface; and
two flame-retardant layers, each of which is made of a thermoplastic flame-retardant polymer material, wherein the two flame-retardant layers are respectively at least coated on the first surface and the second surface of the supporting layer by injection molding.
2. An injection molded, multilayer, fire retardant structural member of claim 1, wherein: the thermoplastic flame-retardant high polymer material is a semi-crystalline thermoplastic high polymer material compound or a non-crystalline thermoplastic high polymer material compound.
3. An injection molded, multilayer, fire retardant structural member of claim 1, wherein: the porous fiber fabric is short fiber cloth, long fiber cloth, woven fiber cloth, non-woven cloth, unidirectional fiber cloth or multiaxial multilayer fabric.
4. An injection molded, multilayer, fire retardant structural member of claim 1, wherein: the mesh number of the porous fiber fabric is between 100 and 5000.
5. An injection molded, multilayer, fire retardant structural member of claim 1, wherein: the porous fiber fabric is composed of graphite fibers, graphene fibers, carbon fibers, glass fibers, ceramic fibers, boron-nitrogen fibers, silicon nitride fibers, mineral salt fibers, aromatic polyamide fibers or aramid synthetic fibers.
6. An injection molded, multilayer, fire retardant structural member of claim 1, wherein: it has a flame resistance rating of UL94-5 VA.
7. An injection molded, multi-layer, fire-retardant structure as claimed in any one of claims 1 to 6, wherein: at least one of the two flame-retardant layers is formed with a plurality of first ribs extending along a first direction on one side different from the supporting layer by injection molding.
8. An injection molded, multi-layer, fire-retardant structure as claimed in claim 7, wherein: the flame retardant layer with the plurality of first ribs is formed with a plurality of second ribs extending along a second direction orthogonal to the first direction through injection molding, and the plurality of second ribs and the plurality of first ribs are connected in a staggered manner.
9. An injection molded, multi-layer, fire-retardant structure as claimed in any one of claims 1 to 6, wherein: at least one of the two flame-retardant layers is formed with a plurality of screw posts by injection molding on one side different from the supporting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120338954.9U CN215283801U (en) | 2021-02-05 | 2021-02-05 | Injection-molded multilayer flame-retardant fireproof structural member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120338954.9U CN215283801U (en) | 2021-02-05 | 2021-02-05 | Injection-molded multilayer flame-retardant fireproof structural member |
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| Publication Number | Publication Date |
|---|---|
| CN215283801U true CN215283801U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120338954.9U Active CN215283801U (en) | 2021-02-05 | 2021-02-05 | Injection-molded multilayer flame-retardant fireproof structural member |
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| CN (1) | CN215283801U (en) |
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- 2021-02-05 CN CN202120338954.9U patent/CN215283801U/en active Active
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