CN112549707A - Food-grade flame-retardant aviation plate and manufacturing method thereof - Google Patents

Food-grade flame-retardant aviation plate and manufacturing method thereof Download PDF

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Publication number
CN112549707A
CN112549707A CN202011427818.3A CN202011427818A CN112549707A CN 112549707 A CN112549707 A CN 112549707A CN 202011427818 A CN202011427818 A CN 202011427818A CN 112549707 A CN112549707 A CN 112549707A
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China
Prior art keywords
retardant
food
flame
coating
grade
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CN202011427818.3A
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Chinese (zh)
Inventor
陈剑平
殷国祥
张建彬
丁治天
王杰
李文君
袁源
李欣棚
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Second Research Institute of CAAC
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Second Research Institute of CAAC
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Abstract

The invention belongs to the technical field of aviation materials, and particularly relates to a food-grade flame-retardant aviation plate and a manufacturing method thereof. The technical scheme is as follows: the utility model provides a fire-retardant aviation panel of food level, includes inorganic fire-retardant flame retardant coating, base panel, the food level macromolecule barrier layer that sets gradually from inside to outside, and inorganic fire-retardant flame retardant coating and food level macromolecule barrier layer coating or deposit are on the surface of base panel. A manufacturing method of a food-grade flame-retardant aviation plate comprises the following steps: covering an inorganic flame-retardant fireproof layer on one surface of the base plate through a spraying or coating or reaction copolymerization process; and covering the food-grade macromolecular barrier layer on the other side of the base plate by a spraying or coating or reaction copolymerization process. The invention provides an aviation plate with low VOC (volatile organic compound) emission rate, food grade and high flame retardant property and a manufacturing method thereof.

Description

Food-grade flame-retardant aviation plate and manufacturing method thereof
Technical Field
The invention belongs to the technical field of aviation materials, and particularly relates to a food-grade flame-retardant aviation plate and a manufacturing method thereof.
Background
The aviation interior material has higher performance requirements in the aspects of flame retardance, sanitation, safety and the like. The combustion performance of aviation interior materials generally needs to pass through vertical combustion, heat release and smoke density tests, the organic materials (including polymer base materials, composite materials, sandwich structure materials and the like) which can meet the requirements are few in variety, raw materials and technologies are generally monopolized abroad and are high in price, a closed space is formed in an aircraft, the VOC (volatile organic compound) emission of cabin materials is high, certain influence can be generated on passengers, particularly aircraft kitchens, dining cars, dining table plates and the like which are likely to be in contact with food, the higher requirements are required on the aspect of sanitary safety performance, the selectable range of the materials is further reduced, and the technical development in the field of aviation materials is limited.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an aviation plate with low VOC (volatile organic compound) emission rate, food grade and high flame retardant property and a manufacturing method thereof.
The technical scheme adopted by the invention is as follows:
the utility model provides a fire-retardant aviation panel of food level, includes inorganic fire-retardant flame retardant coating, base panel, the food level macromolecule barrier layer that sets gradually from inside to outside, and inorganic fire-retardant flame retardant coating and food level macromolecule barrier layer coating or deposit are on the surface of base panel. An inorganic flame-retardant fireproof layer is compounded on the surface of the base plate through processes of spraying, coating, liquid phase deposition and the like, and the inorganic flame-retardant fireproof layer forms a flame-retardant protective layer during combustion. Compared with a single base plate, the maximum heat release rate of 5min is reduced by 5-15 kw/square meter, the total heat release amount in 2 minutes is reduced by 5-15 kw/square meter, and the average smoke density in 4 minutes is reduced by 10-50. A layer of food-grade macromolecular barrier layer is compounded on the surface of the base plate through processes such as spraying, coating, reactive copolymerization and the like, so that the requirements of contact type food safety and sanitation standards can be met, organic macromolecules are prevented from passing through, and the VOC emission of the base plate is reduced by more than 90%. The invention uses the low-cost basic material for modification, improves the flame retardant property and the sanitary safety property of the material, improves the appearance of the material, ensures that the material meets the standard requirement, can greatly reduce the cost of the aviation interior material, and promotes the localization of the aviation material.
In a preferred embodiment of the present invention, the inorganic flame-retardant fire-retardant layer is an inorganic nano ceramic layer or a silicon coating or a silica coating or an inorganic polymer coating.
In a preferable embodiment of the present invention, the inorganic flame-retardant and fire-retardant layer has a thickness of 0.05 to 0.25 mm.
As a preferred embodiment of the present invention, the base sheet is a plastic sheet or a composite laminate or a composite sandwich sheet. When the base plate is a plastic plate or a composite material laminated plate, the base plate is of a single-layer structure; when the base board is the composite sandwich board, the base board is of a multi-layer structure, and each layer is adhered through epoxy glue.
As the preferred scheme of the invention, the plastic plate is made of one of PC, PVC, PA, PC/ABS and PPO; the composite material laminated board is made of one of glass fiber, carbon fiber, basalt fiber and aramid fiber reinforced resin matrix composite materials.
As a preferable scheme of the invention, the composite material sandwich plate comprises an inner skin, a core plate and an outer skin which are arranged in sequence from inside to outside. The inner skin, the core plate and the outer skin are sequentially adhered by epoxy glue.
As a preferred scheme of the invention, the inner skin and the outer skin are made of one of glass fiber, carbon fiber, basalt fiber and aramid fiber reinforced resin matrix composite materials, and the core plate is made of one of PU foam, PMI foam, PET foam, PI foam, PVC foam, PES foam, aluminum honeycomb core and aramid honeycomb core.
As a preferable scheme of the invention, the food-grade macromolecular barrier layer is a compact film layer of one of EVOH, PAN copolymer, MXD6, PEN, PVDC and PVDC copolymer.
As a preferable scheme of the invention, the thickness of the food-grade macromolecular barrier layer is 0.01-0.15 mm.
A manufacturing method of a food-grade flame-retardant aviation plate comprises the following steps:
covering an inorganic flame-retardant fireproof layer on one surface of the base plate through a spraying or coating or reaction copolymerization process; and covering the food-grade macromolecular barrier layer on the other side of the base plate by a spraying or coating or reaction copolymerization process.
The invention has the beneficial effects that:
1. the surface of the base plate is compounded with an inorganic flame-retardant fireproof layer by the processes of spraying, coating, liquid phase deposition and the like, and the inorganic flame-retardant fireproof layer forms a flame-retardant protective layer during combustion. The afterflame time of 60-second vertical combustion is less than or equal to 15s, the combustion length is less than or equal to 152mm, and the afterflame time of drops is less than or equal to 3 s; the maximum heat release rate is less than or equal to 65 kw/square meter within 5min, and the total heat release amount is less than or equal to 65 kw/min/square meter within 2 min; the average smoke density is less than or equal to 200 in 4 minutes. Compared with a single base plate, the maximum heat release rate of 5min is reduced by 5-15 kw/square meter, the total heat release amount in 2 minutes is reduced by 5-15 kw/square meter, and the average smoke density in 4 minutes is reduced by 10-50.
2. A layer of food-grade macromolecular barrier layer is compounded on the surface of the base plate through processes such as spraying, coating, reactive copolymerization and the like, so that the requirements of contact type food safety and sanitation standards can be met, organic macromolecules are prevented from passing through, and the VOC emission of the base plate is reduced by more than 90%.
3. The invention uses the low-cost basic material for modification, improves the flame retardant property and the sanitary safety property of the material, improves the appearance of the material, ensures that the material meets the standard requirement, can greatly reduce the cost of the aviation interior material, and promotes the localization of the aviation material.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in example 1;
fig. 2 is a schematic structural view of the present invention in example 2.
In the figure, 1-inorganic flame-retardant fire-proof layer; 2-a base board; 3-a food-grade macromolecular barrier layer; 21-inner skin; 22-a core plate; 23-an outer skin; 24-epoxy glue.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Example 1:
as shown in figure 1, the food-grade flame-retardant aviation board of this embodiment includes inorganic flame-retardant layer 1, base board 2, food-grade macromolecular barrier layer 3 that set gradually from inside to outside, and inorganic flame-retardant layer 1 and food-grade macromolecular barrier layer 3 coat or deposit on the surface of base board 2.
An inorganic flame-retardant fireproof layer 1 is compounded on the surface of a base plate 2 through processes of spraying, coating, liquid phase deposition and the like, and the inorganic flame-retardant fireproof layer 1 forms a flame-retardant protective layer during combustion. The afterflame time of 60-second vertical combustion is less than or equal to 15s, the combustion length is less than or equal to 152mm, and the afterflame time of drops is less than or equal to 3 s; the maximum heat release rate is less than or equal to 65 kw/square meter within 5min, and the total heat release amount is less than or equal to 65 kw/min/square meter within 2 min; the average smoke density is less than or equal to 200 in 4 minutes. Compared with a single base plate material 2, the maximum heat release rate is reduced by 5-15 kw/square meter in 5min, the total heat release amount is reduced by 5-15 kw/square meter in 2 min, and the average smoke density is reduced by 10-50 in 4 min. A layer of food-grade macromolecular barrier layer 3 is compounded on the surface of the base plate 2 through processes such as spraying, coating, reactive copolymerization and the like, so that the requirements of contact type food safety and sanitation standards can be met, organic macromolecules are prevented from passing through, and the VOC emission of the base plate 2 is reduced by more than 90%. The invention uses the low-cost basic material for modification, improves the flame retardant property and the sanitary safety property of the material, improves the appearance of the material, ensures that the material meets the standard requirement, can greatly reduce the cost of the aviation interior material, and promotes the localization of the aviation material.
Wherein, the inorganic flame-retardant fireproof layer 1 is an inorganic nano ceramic layer or a silicon coating or a silica coating or an inorganic polymer coating. The thickness of the inorganic flame-retardant fireproof layer 1 is 0.05-0.25 mm.
Further, the base sheet 2 is a plastic sheet or a composite laminate, and the base sheet 2 has a single-layer structure. The plastic plate is made of one of PC, PVC, PA, PC/ABS and PPO; the composite material laminated board is made of one of glass fiber, carbon fiber, basalt fiber and aramid fiber reinforced resin matrix composite materials.
Still further, the food-grade macromolecular barrier layer 3 is a dense film layer of one of EVOH, PAN copolymer, MXD6, PEN, PVDC copolymer. The thickness of the food-grade macromolecular barrier layer 3 is 0.01-0.15 mm.
When the inorganic flame-retardant fireproof layer 1 is a phosphate coating layer with the thickness of 0.1mm, the base plate 2 is a carbon fiber reinforced phenolic composite plate with the thickness of 0.6mm, and the food-grade macromolecular barrier layer 3 is an EVOH compact film layer with the thickness of 0.1mm, compared with the base material, the maximum heat release rate is reduced by 5 kw/square meter at 5min, the total heat release amount is reduced by 6 kw/square meter at 2 min, and the average smoke density is reduced by 10 at 4 min; the inner layer food safety and sanitation test shows that the total migration amount (ethanol and acetic acid) is less than or equal to 10mg/d square meter, the potassium permanganate consumption is less than or equal to 10mg/d square meter, and simultaneously, the release of macromolecules of the base material is prevented, so that the VOC discharge amount of the base material is reduced by 93 percent.
Example 2:
as shown in fig. 2, the food-grade flame-retardant aviation board of this embodiment includes inorganic flame-retardant layer 1, base board 2, food-grade macromolecular barrier layer 3 that set gradually from inside to outside, and inorganic flame-retardant layer 1 and food-grade macromolecular barrier layer 3 coat or deposit on the surface of base board 2.
An inorganic flame-retardant fireproof layer 1 is compounded on the surface of a base plate 2 through processes of spraying, coating, liquid phase deposition and the like, and the inorganic flame-retardant fireproof layer 1 forms a flame-retardant protective layer during combustion. The afterflame time of 60-second vertical combustion is less than or equal to 15s, the combustion length is less than or equal to 152mm, and the afterflame time of drops is less than or equal to 3 s; the maximum heat release rate is less than or equal to 65 kw/square meter within 5min, and the total heat release amount is less than or equal to 65 kw/min/square meter within 2 min; the average smoke density is less than or equal to 200 in 4 minutes. Compared with a single base plate material 2, the maximum heat release rate is reduced by 5-15 kw/square meter in 5min, the total heat release amount is reduced by 5-15 kw/square meter in 2 min, and the average smoke density is reduced by 10-50 in 4 min. A layer of food-grade macromolecular barrier layer 3 is compounded on the surface of the base plate 2 through processes such as spraying, coating, reactive copolymerization and the like, so that the requirements of contact type food safety and sanitation standards can be met, organic macromolecules are prevented from passing through, and the VOC emission of the base plate 2 is reduced by more than 90%. The invention uses the low-cost basic material for modification, improves the flame retardant property and the sanitary safety property of the material, improves the appearance of the material, ensures that the material meets the standard requirement, can greatly reduce the cost of the aviation interior material, and promotes the localization of the aviation material.
The base plate 2 is a composite sandwich plate which is of a multilayer structure, and the layers are adhered through epoxy glue 24. The plastic plate is made of one of PC, PVC, PA, PC/ABS and PPO; the composite material laminated board is made of one of glass fiber, carbon fiber, basalt fiber and aramid fiber reinforced resin matrix composite materials. The composite sandwich panel comprises an inner skin 21, a core panel 22 and an outer skin 23 which are arranged in sequence from inside to outside. The inner skin 21, the core plate 22 and the outer skin 23 are sequentially adhered by epoxy glue 24. The inner skin 21 and the outer skin 23 are made of one of glass fiber, carbon fiber, basalt fiber and aramid fiber reinforced resin matrix composite materials, and the core plate 22 is made of one of PU foam, PMI foam, PET foam, PI foam, PVC foam, PES foam, aluminum honeycomb core and aramid fiber honeycomb core.
Still further, the food-grade macromolecular barrier layer 3 is a dense film layer of one of EVOH, PAN copolymer, MXD6, PEN, PVDC copolymer. The thickness of the food-grade macromolecular barrier layer 3 is 0.01-0.15 mm.
When the inorganic flame-retardant fireproof layer 1 is a nano ceramic layer with the thickness of 0.1mm, the base plate 2 is a composite sandwich board (the composite sandwich board comprises a glass fiber reinforced phenolic composite outer skin 23 with the thickness of 0.6mm, an epoxy glue 24 with the thickness of 0.15mm, PU foam with the thickness of 10mm, an epoxy glue 24 with the thickness of 0.15mm, a glass fiber reinforced phenolic composite inner skin 21 with the thickness of 0.6mm and a food-grade macromolecular barrier layer 3 is a PVDC compact film layer with the thickness of 0.1mm, compared with the base material, the maximum heat release rate of 5min is reduced by 10 kw/square meter, the total heat release amount of 2 min is reduced by 10 kw/square meter, and the average smoke density of 4 min is reduced by 50; the inner layer food safety and sanitation test shows that the total migration amount (ethanol and acetic acid) is less than or equal to 10mg/d square meter, the potassium permanganate consumption is less than or equal to 10mg/d square meter, and simultaneously, the release of macromolecules of the base material is prevented, so that the VOC discharge amount of the base material is reduced by 95 percent.
Example 3:
the manufacturing method of the food-grade flame-retardant aviation plate comprises the following steps:
one side of the base plate 2 is covered with an inorganic flame-retardant fireproof layer 1 through a spraying or coating or reaction copolymerization process; and the other side of the base plate 2 is covered with a food-grade macromolecular barrier layer 3 by a spraying or coating or reaction copolymerization process.
An inorganic flame-retardant fireproof layer 1 is compounded on the surface of a base plate 2 through processes of spraying, coating, liquid phase deposition and the like, and the inorganic flame-retardant fireproof layer 1 forms a flame-retardant protective layer during combustion. The invention uses the low-cost basic material for modification, improves the flame retardant property and the sanitary safety property of the material, improves the appearance of the material, ensures that the material meets the standard requirement, can greatly reduce the cost of the aviation interior material, and promotes the localization of the aviation material.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims (10)

1. The utility model provides a fire-retardant aviation panel of food level which characterized in that, includes inorganic fire-retardant flame retardant coating (1), base plate material (2), food level macromolecule barrier layer (3) that set gradually from inside to outside, inorganic fire-retardant flame retardant coating (1) and food level macromolecule barrier layer (3) coating or deposit on the surface of base plate material (2).
2. A food grade fire retardant aviation plate according to claim 1, wherein the inorganic fire retardant layer (1) is an inorganic nano ceramic layer or a silicon coating or a silica coating or an inorganic polymer coating.
3. The food-grade flame-retardant aviation board as claimed in claim 1, wherein the inorganic flame-retardant fire-retardant layer (1) has a thickness of 0.05-0.25 mm.
4. A food grade fire retardant aerospace panel according to claim 1 wherein the base panel (2) is a plastic panel or composite laminate or composite sandwich panel.
5. A food grade flame retardant aviation plate as claimed in claim 4, wherein the plastic plate is made of one of PC, PVC, PA, PC/ABS and PPO; the composite material laminated board is made of one of glass fiber, carbon fiber, basalt fiber and aramid fiber reinforced resin matrix composite materials.
6. A food grade fire retardant aerospace panel according to claim 4 wherein the composite sandwich panel comprises an inner skin (21), a core panel (22) and an outer skin (23) arranged in that order from the inside out.
7. A food grade fire retardant aviation plate according to claim 6, wherein the material of the inner skin (21) and the outer skin (23) is one of glass fiber, carbon fiber, basalt fiber and aramid fiber reinforced resin matrix composite, and the material of the core plate (22) is one of PU foam, PMI foam, PET foam, PI foam, PVC foam, PES foam, aluminum honeycomb core and aramid honeycomb core.
8. A food grade fire retardant aircraft panel according to claim 1, characterized in that the food grade macromolecular barrier layer (3) is a dense film layer of one of EVOH, PAN copolymer, MXD6, PEN, PVDC copolymer.
9. The food-grade flame-retardant aviation plate as claimed in claim 1, wherein the thickness of the food-grade macromolecular barrier layer (3) is 0.01-0.15 mm.
10. A manufacturing method of a food-grade flame-retardant aviation plate is characterized by comprising the following steps:
one side of the base plate (2) is covered with an inorganic flame-retardant fireproof layer (1) through a spraying or coating or reaction copolymerization process; and the other side of the base plate (2) is covered with a food-grade macromolecular barrier layer (3) by a spraying or coating or reaction copolymerization process.
CN202011427818.3A 2020-12-09 2020-12-09 Food-grade flame-retardant aviation plate and manufacturing method thereof Pending CN112549707A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113981705A (en) * 2021-11-05 2022-01-28 中国民用航空总局第二研究所 Fire-resistant flame-retardant aviation container plate and preparation method thereof

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CN105555518A (en) * 2013-07-18 2016-05-04 考特克斯·特克斯罗恩有限公司及两合公司 Multilayered composite material and objects made therefrom
CN109177352A (en) * 2018-07-10 2019-01-11 嘉兴领科材料技术有限公司 A kind of high-strength thermoplasticity light composite board and preparation method thereof
CN109747257A (en) * 2018-11-30 2019-05-14 江苏骏源新材料有限公司 Ceramic coating composite plate and preparation method thereof

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN105555518A (en) * 2013-07-18 2016-05-04 考特克斯·特克斯罗恩有限公司及两合公司 Multilayered composite material and objects made therefrom
CN109177352A (en) * 2018-07-10 2019-01-11 嘉兴领科材料技术有限公司 A kind of high-strength thermoplasticity light composite board and preparation method thereof
CN109747257A (en) * 2018-11-30 2019-05-14 江苏骏源新材料有限公司 Ceramic coating composite plate and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113981705A (en) * 2021-11-05 2022-01-28 中国民用航空总局第二研究所 Fire-resistant flame-retardant aviation container plate and preparation method thereof

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Application publication date: 20210326