CN112590316A - Composite soundproof flame-retardant cotton felt for automotive interior and processing technology thereof - Google Patents

Composite soundproof flame-retardant cotton felt for automotive interior and processing technology thereof Download PDF

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Publication number
CN112590316A
CN112590316A CN202011469566.0A CN202011469566A CN112590316A CN 112590316 A CN112590316 A CN 112590316A CN 202011469566 A CN202011469566 A CN 202011469566A CN 112590316 A CN112590316 A CN 112590316A
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cotton felt
layer
fiber
layers
graphene
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李荣联
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Huai'an Boang Automobile Technology Co ltd
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Huai'an Boang Automobile Technology Co ltd
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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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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    • 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
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    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
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    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • 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
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    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • B32B9/025—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch comprising leather
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • 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
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a composite soundproof and flame retardant cotton felt for automotive interiors and a processing technology thereof, and relates to the technical field of soundproof and flame retardant materials; a plurality of fiber cotton felt layers, polyethylene films and graphene layers are fixedly arranged between the pair of metal skins, the fiber cotton felt layers and the graphene layers are alternately arranged, the middle parts of the fiber cotton felt layers and the graphene layers are fixedly bonded through the polyethylene films, a plurality of through holes are equidistantly arranged in the inner cavity of the fiber cotton felt layers, and activated carbon fiber rods are fixedly arranged in the through holes, so that the fiber cotton felt layer has excellent sound insulation performance and also has antibacterial and mothproof performances; by reducing the glue spraying process, a large amount of labor cost and production cost are saved, and the production efficiency is improved; the flame-retardant coating can rapidly diffuse heat, effectively avoids the phenomenon of local overheating, and has a good flame-retardant effect.

Description

Composite soundproof flame-retardant cotton felt for automotive interior and processing technology thereof
Technical Field
The invention belongs to the technical field of sound-proof flame-retardant materials, and particularly relates to a composite sound-proof flame-retardant cotton felt for automotive interiors and a processing technology thereof.
Background
With the rapid development of the world economy, the living standard of people is continuously improved, and the automobile industry develops rapidly. People's requirements for automobiles are not only beautiful in appearance but also new requirements for comfort, functionality, noise resistance and environmental protection of interior decoration.
The existing composite sound-insulation flame-retardant cotton felt has the problems of easy moisture absorption, easy mildew formation, low sound insulation effect, low heat conductivity coefficient and the like.
Disclosure of Invention
Aiming at solving the problems of the defects and the shortcomings of the prior art; the invention aims to provide a composite soundproof and flame-retardant cotton felt for automotive interiors and a processing technology thereof, wherein the composite soundproof and flame-retardant cotton felt has excellent soundproof performance and antibacterial and mothproof performances; by reducing the glue spraying process, a large amount of labor cost and production cost are saved, and the production efficiency is improved; the flame-retardant coating can rapidly diffuse heat, effectively avoids the phenomenon of local overheating, and has a good flame-retardant effect.
In order to realize the purpose, the composite soundproof and flame retardant cotton felt for the automotive interior comprises: the composite material comprises a fiber cotton felt layer, a polyethylene film, a graphene layer and a metal skin; fixed several layers of fiber cotton felt layer, polyethylene film and the graphite alkene layer of being provided with between a pair of metal covering, fiber cotton felt layer and graphite alkene layer keep alternate arrangement and set up, and the centre on fiber cotton felt layer and graphite alkene layer keeps fixed the bonding through the polyethylene film, the inner chamber equidistance on fiber cotton felt layer is provided with the several through-hole, the internal fixation of through-hole is provided with activated carbon fiber stick.
The processing technology of the composite soundproof and flame retardant cotton felt for the automotive interior comprises the following steps:
the method comprises the following steps: selecting raw materials, wherein the raw materials are mixed sheets formed by blending high-melting-point fibers with the melting point range of 150-250 ℃ and low-melting-point fibers with the melting point range of 100-150 ℃, and the content of the high-melting-point fibers is 50-70%;
step two: adding water into a pulper, adjusting the pH value of the water to 2.0-3.5 by using sulfuric acid, starting the pulper, and feeding the mixed sheet to defiber into thick pulp;
step three: feeding the prepared thick slurry into a slurry blending pool, adding water with the pH value of 2.0-3.5 to prepare slurry with the weight concentration of 0.5-2%;
step four: feeding the slurry prepared in the step three into deslagging equipment for deslagging;
step five: feeding the slurry after deslagging into a head box, so that the slurry overflows from the head box to a fourdrinier forming machine to form uniform wet felt, and removing water in the wet felt in a negative pressure mode;
step six: baking the material with the moisture removed, heating the raw material by hot air at the temperature of 200-250 ℃, heating for 5-10 minutes, laying the heated material on a forming die, pressing into a sheet and then punching, wherein in the pressing process, the die closing pressure is 10MPa-30MPa, the pressurizing descending distance is 30-80mm, the pressurizing descending speed is 5-10mm/s, in the punching process, the punching pressure of a punching knife is 15MPa-30MPa, and the pressure maintaining time is 1-5 minutes, and then installing a fiber cotton felt layer prepared by an activated carbon fiber rod in the punched through hole;
step seven: and then polyethylene films are laid between the cellucotton felt layers and the graphene layers which are arranged at intervals and then sent into drying equipment for drying, and the cellucotton felt layers and the graphene layers are effectively bonded together due to the fact that the polyethylene films are low in melting point and have certain viscosity after being melted, and then metal skins are laid on two sides of a dried product to obtain a finished product.
Preferably, the fiber cotton felt layer is 2-5 layers, and the number of the graphene layers is one more than that of the fiber cotton felt layer.
Preferably, the graphene layer is one of single-layer graphene and multi-layer graphene, and the thickness of the graphene layer is 0.2-5 nm.
Preferably, the thickness of the fiber cotton felt layer is 3-10mm, the diameter of a fiber monofilament of the fiber cotton felt layer is 1-5 mu m, and closed vacuum spheres with the diameter less than 15nm are uniformly arranged on the fiber monofilament.
Preferably, the volume of the closed vacuum spheres on the fiber monofilaments is 15-30% of the volume of the fiber monofilaments.
Preferably, the thickness of the metal skin is 0.5-2 mm.
Preferably, the graphene layer contains silicon atoms.
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes the lower melting point of the polyethylene film and certain viscosity after melting to replace the glue spraying process in the production process, so that the fiber cotton felt layer and the graphene layer are bonded together, and a large amount of labor cost and production cost are saved and the production efficiency is improved by reducing the glue spraying process;
the activated carbon fiber rods are arranged in the fiber cotton felt layer, so that the sound insulation material has excellent sound insulation performance, and also has antibacterial and moth-resistant performances;
the graphene layers are arranged on the two sides of the cellucotton felt layer, so that the overall mechanical strength is improved, and the characteristics of high thermal conductivity and high melting point of graphene are utilized, so that heat can be rapidly diffused, the phenomenon of local overheating is effectively avoided, and the flame-retardant effect is good.
Drawings
For ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of a fiber cotton felt layer 1 according to the present invention.
In the figure: the composite material comprises a fiber cotton felt layer 1, a polyethylene film 2, a graphene layer 3, a metal skin 4, a through hole 11 and an activated carbon fiber rod 12.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
As shown in fig. 1 and 2, the composite soundproof and flame retardant cotton felt for automobile interior: the composite material comprises a fiber cotton felt layer 1, a polyethylene film 2, a graphene layer 3 and a metal skin 4; fixed several cellucotton carpet veneer 1, polyethylene film 2 and the graphite alkene layer 3 of being provided with between a pair of metal covering 4, cellucotton carpet veneer 1 and graphite alkene layer 3 keep alternate arrangement and set up, and the centre of cellucotton carpet veneer 1 and graphite alkene layer 3 keeps fixed bonding through polyethylene film 2, the inner chamber equidistance of cellucotton carpet veneer 1 is provided with several through-hole 11, the through-hole 11 internal fixation is provided with activated carbon fiber stick 12.
The processing technology of the composite soundproof and flame retardant cotton felt for the automotive interior comprises the following steps:
the method comprises the following steps: selecting raw materials, wherein the raw materials are mixed sheets formed by blending high-melting-point fibers with the melting point range of 150-250 ℃ and low-melting-point fibers with the melting point range of 100-150 ℃, and the content of the high-melting-point fibers is 50-70%;
step two: adding water into a pulper, adjusting the pH value of the water to 2.0-3.5 by using sulfuric acid, starting the pulper, and feeding the mixed sheet to defiber into thick pulp;
step three: feeding the prepared thick slurry into a slurry blending pool, adding water with the pH value of 2.0-3.5 to prepare slurry with the weight concentration of 0.5-2%;
step four: feeding the slurry prepared in the step three into deslagging equipment for deslagging;
step five: feeding the slurry after deslagging into a head box, so that the slurry overflows from the head box to a fourdrinier forming machine to form uniform wet felt, and removing water in the wet felt in a negative pressure mode;
step six: baking the material with the moisture removed, heating the raw material by hot air at the temperature of 200-250 ℃, heating for 5-10 minutes, laying the heated material on a forming die, pressing into a sheet and then punching, wherein in the pressing process, the die closing pressure is 10MPa-30MPa, the pressurizing descending distance is 30-80mm, the pressurizing descending speed is 5-10mm/s, in the punching process, the punching pressure of a punching knife is 15MPa-30MPa, and the pressure maintaining time is 1-5 minutes, and then installing a fiber cotton felt layer prepared by an activated carbon fiber rod in the punched through hole;
step seven: and then polyethylene films are laid between the cellucotton felt layers and the graphene layers which are arranged at intervals and then sent into drying equipment for drying, and the cellucotton felt layers and the graphene layers are effectively bonded together due to the fact that the polyethylene films are low in melting point and have certain viscosity after being melted, and then metal skins are laid on two sides of a dried product to obtain a finished product.
The fiber cotton felt layer 1 is 2-5 layers, the number of layers of the graphene layer 3 is one more than that of the fiber cotton felt layer 1, the graphene layer 3 is one of single-layer graphene and multi-layer graphene, the thickness of the graphene layer 3 is 0.2-5nm, the thickness of the fiber cotton felt layer 1 is 3-10mm, the diameter of a fiber monofilament of the fiber cotton felt layer 1 is 1-5 mu m, closed vacuum spheres with the diameter smaller than 15nm are uniformly arranged on the fiber monofilament, the volume of the closed vacuum spheres on the fiber monofilament is 15-30% of the volume of the fiber monofilament, the thickness of the metal skin 4 is 0.5-2mm, and the graphene layer 3 contains silicon atoms.
The beneficial effects of the embodiment are as follows: the invention utilizes the lower melting point of the polyethylene film and the certain viscosity after melting to replace the glue spraying process in the production process, so that the fiber cotton felt layer and the graphene layer are bonded together, and by reducing the glue spraying process, a large amount of labor cost and production cost are saved, and the production efficiency is improved; the invention not only has excellent sound insulation performance, but also has antibacterial and moth-proof performance by arranging the activated carbon fiber rod in the fiber cotton felt layer; according to the invention, the graphene layers are arranged on the two sides of the cellucotton felt layer, so that the overall mechanical strength is improved, and the characteristics of high thermal conductivity and high melting point of graphene are utilized, so that heat can be rapidly diffused, the phenomenon of local overheating is effectively avoided, and the flame-retardant effect is good.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. Compound syllable-dividing fire-retardant cotton felt for automotive interior, its characterized in that: the composite material comprises a fiber cotton felt layer (1), a polyethylene film (2), a graphene layer (3) and a metal skin (4); fixed several layers of fiber cotton felt layer (1), polyethylene film (2) and graphite alkene layer (3) of being provided with between a pair of metal covering (4), fiber cotton felt layer (1) and graphite alkene layer (3) keep alternate arrangement and set up in turn, and the centre of fiber cotton felt layer (1) and graphite alkene layer (3) keeps fixed the bonding through polyethylene film (2), the inner chamber equidistance of fiber cotton felt layer (1) is provided with several through-hole (11), through-hole (11) internal fixation is provided with activated carbon fiber stick (12).
2. The processing technology of the composite soundproof and flame retardant cotton felt for the automotive interior comprises the following steps:
the method comprises the following steps: selecting raw materials, wherein the raw materials are mixed sheets formed by blending high-melting-point fibers with the melting point range of 150-250 ℃ and low-melting-point fibers with the melting point range of 100-150 ℃, and the content of the high-melting-point fibers is 50-70%;
step two: adding water into a pulper, adjusting the pH value of the water to 2.0-3.5 by using sulfuric acid, starting the pulper, and feeding the mixed sheet to defiber into thick pulp;
step three: feeding the prepared thick slurry into a slurry blending pool, adding water with the pH value of 2.0-3.5 to prepare slurry with the weight concentration of 0.5-2%;
step four: feeding the slurry prepared in the step three into deslagging equipment for deslagging;
step five: feeding the slurry after deslagging into a head box, so that the slurry overflows from the head box to a fourdrinier forming machine to form uniform wet felt, and removing water in the wet felt in a negative pressure mode;
step six: baking the material with the moisture removed, heating the raw material by hot air at the temperature of 200-250 ℃, heating for 5-10 minutes, laying the heated material on a forming die, pressing into a sheet and then punching, wherein in the pressing process, the die closing pressure is 10MPa-30MPa, the pressurizing descending distance is 30-80mm, the pressurizing descending speed is 5-10mm/s, in the punching process, the punching pressure of a punching knife is 15MPa-30MPa, and the pressure maintaining time is 1-5 minutes, and then installing a fiber cotton felt layer prepared by an activated carbon fiber rod in the punched through hole;
step seven: and then polyethylene films are laid between the cellucotton felt layers and the graphene layers which are arranged at intervals and then sent into drying equipment for drying, and the cellucotton felt layers and the graphene layers are effectively bonded together due to the fact that the polyethylene films are low in melting point and have certain viscosity after being melted, and then metal skins are laid on two sides of a dried product to obtain a finished product.
3. The composite soundproof and flame retardant cotton felt for automotive interiors according to claim 1, characterized in that: the fiber cotton felt layer (1) is 2-5 layers, and the number of the graphene layer (3) is one layer more than that of the fiber cotton felt layer (1).
4. The composite soundproof and flame retardant cotton felt for automotive interiors according to claim 1, characterized in that: the graphene layer (3) is one of single-layer graphene and multi-layer graphene, and the thickness of the graphene layer (3) is 0.2-5 nm.
5. The composite soundproof and flame retardant cotton felt for automotive interiors according to claim 1, characterized in that: the thickness of the fiber cotton felt layer (1) is 3-10mm, the diameter of a fiber monofilament of the fiber cotton felt layer (1) is 1-5 mu m, and closed vacuum spheres with the diameter smaller than 15nm are uniformly arranged on the fiber monofilament.
6. The composite soundproof and flame retardant cotton felt for automotive interiors according to claim 5, characterized in that: the volume of the closed vacuum spheres on the fiber monofilaments is 15-30% of the volume of the fiber monofilaments.
7. The composite soundproof and flame retardant cotton felt for automotive interiors according to claim 1, characterized in that: the thickness of the metal skin (4) is 0.5-2 mm.
8. The composite soundproof and flame retardant cotton felt for automotive interiors according to claim 1, characterized in that: the graphene layer (3) contains silicon atoms.
CN202011469566.0A 2020-12-15 2020-12-15 Composite soundproof flame-retardant cotton felt for automotive interior and processing technology thereof Pending CN112590316A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101314A (en) * 2010-11-25 2011-06-22 中材科技股份有限公司 Method for preparing sound and heat insulation rock wool felt
CN204825267U (en) * 2015-08-07 2015-12-02 沈阳广源东响玻璃制品有限公司 Adiabatic sound control glass cellucotton felt
CN205573833U (en) * 2016-01-21 2016-09-14 合肥良骏汽车材料有限公司 A cotton felt for making car gives sound insulation and fills up
CN106205589A (en) * 2016-08-02 2016-12-07 常熟市嘉淀纺织有限公司 A kind of favorable moth-proof complex sound insulation is cotton
CN207565075U (en) * 2017-10-13 2018-07-03 宿迁南航新材料与装备制造研究院有限公司 A kind of compound blanket of novel heat-insulation
KR101976417B1 (en) * 2018-10-22 2019-05-09 강지숙 Flame resistance insulating panel and manufacturing method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101314A (en) * 2010-11-25 2011-06-22 中材科技股份有限公司 Method for preparing sound and heat insulation rock wool felt
CN204825267U (en) * 2015-08-07 2015-12-02 沈阳广源东响玻璃制品有限公司 Adiabatic sound control glass cellucotton felt
CN205573833U (en) * 2016-01-21 2016-09-14 合肥良骏汽车材料有限公司 A cotton felt for making car gives sound insulation and fills up
CN106205589A (en) * 2016-08-02 2016-12-07 常熟市嘉淀纺织有限公司 A kind of favorable moth-proof complex sound insulation is cotton
CN207565075U (en) * 2017-10-13 2018-07-03 宿迁南航新材料与装备制造研究院有限公司 A kind of compound blanket of novel heat-insulation
KR101976417B1 (en) * 2018-10-22 2019-05-09 강지숙 Flame resistance insulating panel and manufacturing method thereof

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