Composite material floor with flame-retardant and sound-insulation functions
Technical Field
The utility model relates to a laminate flooring field, in particular to a composite material floor with fire-retardant and sound insulation function.
Background
As is well known, sandwich structure composite materials have very wide application in the fields of aerospace, rail transit and the like due to the fact that the sandwich structure composite materials are convenient for structural and functional integrated design. With the rapid development of rail transit, urgent needs are provided for the weight reduction of interior parts of a carriage, and not only the mechanical performance indexes of stretching, compression, bending and the like are required to be met, but also the functional requirements of sound insulation, flame retardance, environmental protection and the like are required to be met. At present, the common practice is to add a damping rubber layer in the floor structure, which not only increases the weight of the floor significantly, but also increases the process of the composite process.
Disclosure of Invention
In order to overcome the not enough of prior art, the utility model provides a combined material floor with fire-retardant and sound insulation function, preparation simple process has light weight, high strength, ageing resistance, shock resistance, high bearing, excellent performance such as corrosion-resistant, especially its excellent syllable-dividing, fire-retardant and feature of environmental protection.
The utility model provides a technical scheme that its technical problem adopted is: a composite material floor with flame-retardant and sound-insulation functions is provided with light core steel and is characterized in that an upper covering and a lower covering are respectively bonded to the upper side and the lower side of the light core steel through an upper adhesive layer and a lower adhesive layer, and the upper covering and the lower covering are made of continuous fiber reinforced epoxy resin prepreg; the continuous fiber is one or more of unidirectional glass fiber, glass fiber fabric, unidirectional carbon fiber and carbon fiber fabric, and the density of the light core steel is 160kg/m3-600kg/m3The thickness of the light core steel is 10-50 mm, and the thickness of the upper skin and the thickness of the lower skin are 0.2-3 mm.
The beneficial effects of the utility model are that, preparation simple process has excellent properties such as light weight, high strength, ageing resistance, shock resistance, high bearing, corrosion resistance, especially its excellent syllable-dividing, fire-retardant and feature of environmental protection can be popularized and applied in the track traffic field comprehensively.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is an upper covering, 2 is an upper glue line, 3 is light core steel, 4 is a lower glue line, and 5 is a lower covering.
Detailed Description
In fig. 1, the utility model is provided with a light core steel 3, the upper side surface and the lower side surface of the light core steel 3 are respectively adhered with an upper skin 1 and a lower skin 5 through an upper adhesive layer 2 and a lower adhesive layer 4, the upper skin 1 and the lower skin 5 are made of continuous fiber reinforced epoxy resin prepreg; the continuous fiber is one or more of unidirectional glass fiber, glass fiber fabric, unidirectional carbon fiber and carbon fiber fabric, and the density of the light core steel 3 is 160kg/m3-600kg/m3The thickness of the light core steel 3 is 10-50 mm, the thickness of the upper skin 1 and the thickness of the lower skin 5 are both 0.2-3 mm, the upper adhesive layer 2 and the lower adhesive layer 4 are epoxy resin adhesive films or adhesives, and the usage amount is 150-500 g/m-2。
Example 1
Preparing a composite floor with the thickness of 18mm, wherein the upper skin 1 and the lower skin 5 are all 1mm, the upper skin 1 and the lower skin 5 are all made of glass fiber fabric flame-retardant epoxy resin prepreg, the thickness of the light core steel 3 is 15.9-16mm, the density is 200kg/m3, the upper surface and the lower surface of the light core steel 3 are respectively coated with an upper glue layer 2 and a lower glue layer 4 of 200g/m2 flame-retardant epoxy glue film, a prefabricated body of five layers of glass fiber fabric flame-retardant epoxy prepreg, 150g/m2 flame-retardant epoxy glue film, light core steel 3, 150g/m2 flame-retardant epoxy glue film and five layers of glass fiber fabric flame-retardant epoxy prepreg is obtained, the prefabricated body is solidified in a hot press at the temperature of 130 ℃, and is cooled to the temperature below 60 ℃ after the solidification, and the composite floor is obtained after demoulding.
Example 2
Preparing a 30mm composite material floor, wherein an upper skin 1 is 2mm, a lower skin 5 is 1.5mm, the thickness of a light core steel 3 is 26.5-26.4mm, the density is 210kg/m3, the upper skin 1 and the lower skin are all mixed and layered by adopting carbon fiber fabrics and glass fiber fabrics, then curing at 130 ℃ in a hot press, cooling below 60 ℃ after curing, and demoulding to obtain the skin. The upper surface and the lower surface of the light core steel 3 are respectively coated with an upper adhesive layer 2 and a lower adhesive layer 4 of flame-retardant epoxy glue 400g/m2, then the skin bonding surface is bonded with the light core steel 3, the prefabricated body is cured in a hot press at 60 ℃ for 2 hours under the pressure of 0.05Mpa, and the composite material floor is obtained after the curing and demoulding.
Example 3
Preparing a 50mm composite material floor, wherein the thickness of an upper skin 1 and a lower skin 5 is 2mm, the thickness of a light core steel 3 is 45.9-46mm, the density is 300kg/m3, the upper skin 1 and the lower skin 5 are all formed by mixing and laying carbon fiber fabrics and carbon fiber unidirectional prepreg, then curing at 130 ℃ in an autoclave, cooling below 60 ℃ after curing, and demoulding to obtain the skin. The upper surface and the lower surface of the light core steel 3 are respectively coated with an upper adhesive layer 2 and a lower adhesive layer 4 of flame-retardant epoxy glue 500g/m2, then the skin bonding surface is bonded with the light core steel 3, the prefabricated body is cured in a hot press at 60 ℃ for 2 hours under the pressure of 0.05Mpa, and the composite material floor is obtained after the curing and demoulding.