CN112080856A - Preparation method of composite sound-absorbing material for motor home - Google Patents
Preparation method of composite sound-absorbing material for motor home Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- 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
- 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
- B32B5/024—Woven fabric
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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
- B32B5/22—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
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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
- 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
- B32B9/047—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 made of fibres or filaments
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- 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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4309—Polyvinyl alcohol
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
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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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
Abstract
The invention provides a preparation method of a composite sound-absorbing material for a motor home, which comprises the following steps: step S1: preparing a molten main material: respectively taking 40-60 parts of PP, 10-15 parts of PET and 5-10 parts of polyethylene glycol isophthalate according to parts by weight, cutting and mixing to form a mixture, and uniformly stirring; step S2: melt extrusion; step S3: forming main material fibers; step S4: preparing auxiliary material fiber; step S5: mixing main and auxiliary material fibers; step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound absorbing material with a net structure on the centrifugal cotton net surface together with the high-speed hot air flow. The invention provides a preparation method of a composite sound-absorbing material for a motor home, which has good sound-absorbing and noise-reducing effects, safety, environmental protection and good rebound resilience.
Description
Technical Field
The invention relates to the field of preparation of sound-absorbing materials for vehicles, in particular to a preparation method of a composite sound-absorbing material for a motor home.
Background
With the development of the automobile industry, the demand of people on the motor home is increasing day by day, and the requirements of comfort, safety and customer experience of the motor home as a high-end automobile are higher than those of a common automobile, wherein the noise control of the motor home in the driving process is attracting people's attention day by day. The noise of the motor home not only increases the fatigue of the driver and the passengers, but also affects the driving safety of the motor home. The noise level of modern motor homes becomes one of important marks for measuring the quality of the motor homes, and the riding comfort, the conversation definition and the recognition capability of drivers on various driving signals are seriously influenced by excessive noise in the motor homes.
Therefore, a preparation method of the composite sound-absorbing material for the motor home, which has good sound-absorbing and noise-reducing effects, safety, environmental protection and good resilience, needs to be researched.
Disclosure of Invention
The invention aims to provide a preparation method of a composite sound-absorbing material for a motor home, which has good sound-absorbing and noise-reducing effects, safety, environmental protection and good rebound resilience.
The technical purpose of the invention is realized by the following technical scheme:
a preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: respectively taking 40-60 parts of PP, 10-15 parts of PET and 5-10 parts of polyethylene glycol isophthalate according to parts by weight, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, and enabling the mixture to pass through a double-melt filter and a double-box metering pump device to reach a spinneret plate;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: according to the weight parts, 8-10 parts of polyvinyl alcohol laurate short fibers are taken and combed to be fluffy by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into high-speed hot air flow of a melt-blown process through a blower;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound absorbing material with a net structure on the centrifugal cotton net surface together with the high-speed hot air flow.
As a further configuration of the present invention, step S4 further comprises 5-10 parts of polytrimethylene terephthalate staple fibers, which are mixed with polyvinyl alcohol laurate staple fibers and fed into the carding machine.
As a further arrangement of the present invention, step S5 is added to the high velocity hot gas stream from the outside in a direction perpendicular to the flow of the high velocity hot gas stream.
As a further configuration of the invention, the melt blowing temperature of the spinneret plate in the step S3 is 220-260 ℃.
As a further arrangement of the invention, the twin-screw extruder in step S2 adopts an electric heating device, the twin-screw extruder is heated by four zones, and the temperature is increased in gradient from low to high: 165 ℃, 190 ℃, 230 ℃ and 260 ℃.
As a further configuration of the present invention, step S6 is followed by step S7: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
As a further arrangement of the invention, an activated carbon fiber net surface is laid on the centrifugal cotton net surface of the step S6.
The invention has the beneficial effects that:
1. the raw materials of the invention are polyethylene glycol isophthalate, the polyethylene glycol isophthalate is melted with PP and PET, and then the spinning operation is carried out on the centrifugal cotton mesh surface by a spinneret plate through a spinneret plate by hot air flow, the polyethylene glycol isophthalate can increase the specific surface area of formed fibers, so that the pores of the prepared sound-absorbing material are smaller, molecular acting force exists between the polyethylene glycol isophthalate and PP and PET in a molten state, the length disorder of the fibers in the generated sound-absorbing material is improved, the structure of the internal pores is more complex, the probability of sound waves reflected in the material is increased, and the sound-absorbing effect of the sound-absorbing material is effectively improved.
2. The raw materials of the invention also comprise polyvinyl alcohol laurate short fibers, the polyvinyl alcohol laurate short fibers are added from the outside and perpendicular to the direction of hot air flow, the polyvinyl alcohol laurate short fibers can be bonded with polyethylene glycol isophthalate, PP and PET to be mutually entangled in the process of drying the melted polyethylene glycol isophthalate, PP and PET from viscous and undried liquid materials along with air flow to form fibers, thereby improving the disorder and connectivity of the main material fibers of the sound-absorbing material formed by falling on a centrifugal cotton mesh surface, and the main material fibers (the polyethylene glycol isophthalate, PP and PET) can be provided with the polyvinyl alcohol laurate short fibers in different directions, thereby improving the blocking steric hindrance and the support of the sound-absorbing material in all directions, improving the effect of the sound-absorbing material on sound wave energy absorption and simultaneously improving the rebound resilience of the sound-absorbing material.
3. The raw materials of the invention also comprise polytrimethylene terephthalate short fibers, the polytrimethylene terephthalate short fibers and the polyvinyl alcohol laurate short fibers are mechanically mixed and then added from the outside in a direction perpendicular to the hot air flow, and the polytrimethylene terephthalate short fibers can further improve the connectivity of the polyvinyl alcohol laurate short fibers and the polyethylene glycol terephthalate, PP and PET, improve the tensile property of the material, effectively improve the bulkiness of the formed fiber sound-absorbing material, reduce the difficulty of sound waves entering the sound-absorbing material, and improve the absorption height and the absorption effect of noise.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
First, an embodiment
Example 1
A preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: according to the weight parts, respectively taking 40 parts of PP, 10 parts of PET and 5 parts of polyethylene glycol isophthalate, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, wherein the double-screw extruder adopts an electric heating device and is divided into four regions for heating, and the temperature is increased in a gradient manner from low to high: the temperature is 165 ℃, 190 ℃, 230 ℃ and 260 ℃, and the mixture is fed into a spinneret plate through a double-melt filter and a double-box metering pump device;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate with the temperature of 220 ℃, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: according to the weight parts, 8 parts of polyvinyl alcohol laurate short fibers and 5 parts of polytrimethylene terephthalate short fibers are mixed and carded to be fluffy by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into the high-speed hot air flow of the melt-blown process from the outside by a blower along the direction vertical to the flow of the high-speed hot air flow;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound-absorbing material with a net structure on a centrifugal cotton net surface together with high-speed hot air, wherein an activated carbon fiber net surface is further paved on the centrifugal cotton net surface.
Step S7: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
Example 2
A preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: according to the weight parts, respectively taking 60 parts of PP, 15 parts of PET and 10 parts of polyethylene glycol isophthalate, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, wherein the double-screw extruder adopts an electric heating device and is divided into four regions for heating, and the temperature is increased in a gradient manner from low to high: the temperature is 165 ℃, 190 ℃, 230 ℃ and 260 ℃, and the mixture is fed into a spinneret plate through a double-melt filter and a double-box metering pump device;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate with the temperature of 260 ℃, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: according to the weight parts, 10 parts of polyvinyl alcohol laurate short fibers and 10 parts of polytrimethylene terephthalate short fibers are mixed and then combed to be fluffy by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into the high-speed hot air flow of the melt-blown process from the outside by a blower along the direction vertical to the flow of the high-speed hot air flow;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound-absorbing material with a net structure on a centrifugal cotton net surface together with high-speed hot air, wherein an activated carbon fiber net surface is further paved on the centrifugal cotton net surface.
Step S7: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
Example 3
A preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: according to the weight parts, respectively taking 50 parts of PP, 12 parts of PET and 8 parts of polyethylene glycol isophthalate, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, wherein the double-screw extruder adopts an electric heating device and is divided into four regions for heating, and the temperature is increased in a gradient manner from low to high: the temperature is 165 ℃, 190 ℃, 230 ℃ and 260 ℃, and the mixture is fed into a spinneret plate through a double-melt filter and a double-box metering pump device;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate with the temperature of 240 ℃, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: according to the weight parts, 9 parts of polyvinyl alcohol laurate short fibers and 8 parts of polytrimethylene terephthalate short fibers are mixed and carded to be fluffy by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into the high-speed hot air flow of the melt-blown process from the outside by a blower along the direction vertical to the flow of the high-speed hot air flow;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound-absorbing material with a net structure on a centrifugal cotton net surface together with high-speed hot air, wherein an activated carbon fiber net surface is further paved on the centrifugal cotton net surface.
Step S7: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
Example 4
A preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: respectively taking 50 parts of PP and 12 parts of PET according to parts by weight, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, wherein the double-screw extruder adopts an electric heating device and is divided into four regions for heating, and the temperature is increased in a gradient manner from low to high: the temperature is 165 ℃, 190 ℃, 230 ℃ and 260 ℃, and the mixture is fed into a spinneret plate through a double-melt filter and a double-box metering pump device;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate with the temperature of 240 ℃, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: according to the weight parts, 9 parts of polyvinyl alcohol laurate short fibers and 8 parts of polytrimethylene terephthalate short fibers are mixed and carded to be fluffy by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into the high-speed hot air flow of the melt-blown process from the outside by a blower along the direction vertical to the flow of the high-speed hot air flow;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound-absorbing material with a net structure on a centrifugal cotton net surface together with high-speed hot air, wherein an activated carbon fiber net surface is further paved on the centrifugal cotton net surface.
Step S7: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
Example 5
A preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: according to the weight parts, respectively taking 50 parts of PP, 12 parts of PET and 8 parts of polyethylene glycol isophthalate, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, wherein the double-screw extruder adopts an electric heating device and is divided into four regions for heating, and the temperature is increased in a gradient manner from low to high: the temperature is 165 ℃, 190 ℃, 230 ℃ and 260 ℃, and the mixture is fed into a spinneret plate through a double-melt filter and a double-box metering pump device;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate with the temperature of 240 ℃, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: taking 8 parts by weight of polytrimethylene terephthalate short fibers, and carding and fluffing the polytrimethylene terephthalate short fibers by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into the high-speed hot air flow of the melt-blown process from the outside by a blower along the direction vertical to the flow of the high-speed hot air flow;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound-absorbing material with a net structure on a centrifugal cotton net surface together with high-speed hot air, wherein an activated carbon fiber net surface is further paved on the centrifugal cotton net surface.
Step S7: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
Example 6
A preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: according to the weight parts, respectively taking 50 parts of PP, 12 parts of PET and 8 parts of polyethylene glycol isophthalate, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, wherein the double-screw extruder adopts an electric heating device and is divided into four regions for heating, and the temperature is increased in a gradient manner from low to high: the temperature is 165 ℃, 190 ℃, 230 ℃ and 260 ℃, and the mixture is fed into a spinneret plate through a double-melt filter and a double-box metering pump device;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate with the temperature of 240 ℃, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: according to the weight parts, 9 parts of polyvinyl alcohol laurate short fibers are taken and combed to be fluffy by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into the high-speed hot air flow of the melt-blown process from the outside by a blower along the direction vertical to the flow of the high-speed hot air flow;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound-absorbing material with a net structure on a centrifugal cotton net surface together with high-speed hot air, wherein an activated carbon fiber net surface is further paved on the centrifugal cotton net surface.
Step S7: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
Example 7
A preparation method of a composite sound absorbing material for a motor home comprises the following steps:
step S1: preparing a molten main material: respectively taking 50 parts of PP and 12 parts of PET according to parts by weight, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, wherein the double-screw extruder adopts an electric heating device and is divided into four regions for heating, and the temperature is increased in a gradient manner from low to high: the temperature is 165 ℃, 190 ℃, 230 ℃ and 260 ℃, and the mixture is fed into a spinneret plate through a double-melt filter and a double-box metering pump device;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate with the temperature of 240 ℃, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing a fiber sound-absorbing material: the main material fiber forms a fiber sound absorbing material with a net structure on a centrifugal cotton net surface together with the high-speed hot air flow, wherein the centrifugal cotton net surface is also paved with an activated carbon fiber net surface.
Step S5: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
Film formation time test method: and respectively calculating the surface drying time and the actual drying time of the film body by adopting a finger touch method and a blade method. After the coating is uniformly coated on the sample wafer, the sample wafer is placed under the set ventilation condition of 30 ℃, and the surface drying time of film forming of the film body is observed according to the measurement.
The test method comprises the following steps:
(1) mechanical properties: testing the dry breaking strength of the melt-blown nonwoven material by adopting a YG028 type universal strength tester according to a non-woven fabric breaking strength test standard FZ/T60005-1991;
(2) compression resilience: a model YG141 digital textile thickness gauge was used with a light load of 200CN and a heavy load of 700 CN. A thickness h0 after being applied for 30 seconds under a light load of 20OCN, a thickness h1 after being applied for 30 seconds with a heavy load of 70OCN, a rest for 1min under a no-load state and a light load of 200CN are added, a thickness h2 after 30 seconds is measured, and the compression elastic modulus is (h2-h1)/(h0-h 1);
(3) sound absorption performance: measuring the average sound absorption coefficient of different samples at 100-5000Hz by adopting a standing wave tube method;
(4) porosity: the porosity of the samples was measured and calculated by bubbling using a PSM-165 pore size tester.
The samples prepared in examples 1 to 7 were tested for mechanical properties, compression resilience, sound absorption and porosity, and the results were as follows:
TABLE 1 test results for each sample
The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. A preparation method of a composite sound absorbing material for a motor home is characterized by comprising the following steps:
step S1: preparing a molten main material: respectively taking 40-60 parts of PP, 10-15 parts of PET and 5-10 parts of polyethylene glycol isophthalate according to parts by weight, cutting and mixing to form a mixture, and uniformly stirring;
step S2: melt extrusion: putting the mixture into a double-screw extruder, and enabling the mixture to pass through a double-melt filter and a double-box metering pump device to reach a spinneret plate;
step S3: forming main material fibers: after the mixture in the step S2 is sprayed out by a spinneret plate, a melt-blown superfine fiber flow is formed in a hot air drafting system to form main material fibers;
step S4: preparing auxiliary material fiber: according to the weight parts, 8-10 parts of polyvinyl alcohol laurate short fibers are taken and combed to be fluffy by a carding machine to form auxiliary material fibers;
step S5: mixing main and auxiliary material fibers: blowing the secondary material fiber into high-speed hot air flow of a melt-blown process through a blower;
step S6: preparing a fiber sound-absorbing material: the main material fiber and the auxiliary material fiber form a fiber sound absorbing material with a net structure on the centrifugal cotton net surface together with the high-speed hot air flow.
2. The method of claim 1, wherein the step S4 further comprises 5-10 parts of polytrimethylene terephthalate staple fibers, and the polytrimethylene terephthalate staple fibers and polyvinyl alcohol laurate staple fibers are mixed and fed into a carding machine.
3. The method of claim 1, wherein the step S5 is performed by externally feeding the high-speed hot air in a direction perpendicular to the flow of the high-speed hot air.
4. The method for preparing the composite sound absorbing material for a recreational vehicle according to claim 1, wherein the melt blowing temperature of the spinneret plate in the step S3 is 220 ℃ to 260 ℃.
5. The method of claim 1, wherein the twin-screw extruder in step S2 employs an electric heating device, and the twin-screw extruder is heated in four zones, and the temperature is increased in a gradient from low to high: 165 ℃, 190 ℃, 230 ℃ and 260 ℃.
6. The method of claim 1, further comprising a step S7 after the step S6: preparing a finished product: the fiber sound-absorbing material with the net structure is subjected to embossing, winding, cutting and stamping to obtain a finished product of the sound-absorbing material.
7. The method of claim 1, wherein an activated carbon fiber mesh is further laid on the centrifugal cotton mesh of step S6.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1650280A1 (en) * | 2004-10-19 | 2006-04-26 | 3M Innovative Properties Company | Adhesive articles comprising fibrous webs |
| US20080315454A1 (en) * | 2007-06-22 | 2008-12-25 | 3M Innovative Properties Company | Method of making meltblown fiber web with staple fibers |
| CN102320171A (en) * | 2011-08-27 | 2012-01-18 | 卢霖 | A kind of many components high molecular polymerization fibres acoustical absorption heat preserving material and manufacturing approach thereof |
| CN103088549A (en) * | 2012-12-04 | 2013-05-08 | 江苏六鑫洁净新材料有限公司 | Two-component sound absorption and heat insulation cotton based on polypropylene superfine fibers and polyester staple fibers and preparation method thereof |
| CN103276535A (en) * | 2013-06-19 | 2013-09-04 | 天津泰达洁净材料有限公司 | Double-component melt-blown non-woven material and manufacturing method thereof |
| CN104379826A (en) * | 2012-06-12 | 2015-02-25 | 霓佳斯株式会社 | Soundproof cover for automobile and method for manufacturing soundproof cover for automobile |
| CN107571561A (en) * | 2017-09-19 | 2018-01-12 | 南通大学 | A kind of down-like acoustic material and preparation method thereof |
| CN107599564A (en) * | 2017-07-25 | 2018-01-19 | 芜湖尚唯汽车饰件有限公司 | A kind of preparation method of PET/PP composite sound-absorbings material |
| CN108823814A (en) * | 2018-08-24 | 2018-11-16 | 芜湖跃飞新型吸音材料股份有限公司 | A kind of short fine production technology with melt-blown composite molding acoustical cotton |
| CN108866829A (en) * | 2018-08-24 | 2018-11-23 | 芜湖跃飞新型吸音材料股份有限公司 | A kind of preparation process of tri- component acoustical cotton of high resiliency PP/PET/PTT |
| CN110644143A (en) * | 2018-12-13 | 2020-01-03 | 北京钧毅微纳新材科技有限公司 | Composite flocculus and preparation method and application thereof |
-
2020
- 2020-09-21 CN CN202010994581.0A patent/CN112080856B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1650280A1 (en) * | 2004-10-19 | 2006-04-26 | 3M Innovative Properties Company | Adhesive articles comprising fibrous webs |
| US20080315454A1 (en) * | 2007-06-22 | 2008-12-25 | 3M Innovative Properties Company | Method of making meltblown fiber web with staple fibers |
| CN102320171A (en) * | 2011-08-27 | 2012-01-18 | 卢霖 | A kind of many components high molecular polymerization fibres acoustical absorption heat preserving material and manufacturing approach thereof |
| CN104379826A (en) * | 2012-06-12 | 2015-02-25 | 霓佳斯株式会社 | Soundproof cover for automobile and method for manufacturing soundproof cover for automobile |
| CN103088549A (en) * | 2012-12-04 | 2013-05-08 | 江苏六鑫洁净新材料有限公司 | Two-component sound absorption and heat insulation cotton based on polypropylene superfine fibers and polyester staple fibers and preparation method thereof |
| CN103276535A (en) * | 2013-06-19 | 2013-09-04 | 天津泰达洁净材料有限公司 | Double-component melt-blown non-woven material and manufacturing method thereof |
| CN107599564A (en) * | 2017-07-25 | 2018-01-19 | 芜湖尚唯汽车饰件有限公司 | A kind of preparation method of PET/PP composite sound-absorbings material |
| CN107571561A (en) * | 2017-09-19 | 2018-01-12 | 南通大学 | A kind of down-like acoustic material and preparation method thereof |
| CN108823814A (en) * | 2018-08-24 | 2018-11-16 | 芜湖跃飞新型吸音材料股份有限公司 | A kind of short fine production technology with melt-blown composite molding acoustical cotton |
| CN108866829A (en) * | 2018-08-24 | 2018-11-23 | 芜湖跃飞新型吸音材料股份有限公司 | A kind of preparation process of tri- component acoustical cotton of high resiliency PP/PET/PTT |
| CN110644143A (en) * | 2018-12-13 | 2020-01-03 | 北京钧毅微纳新材科技有限公司 | Composite flocculus and preparation method and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| EUR.CHEM.NEWS: "聚对苯二甲酸亚丙基酯将工业生产", 《石油化工》 * |
| 梅自强: "《纺织辞典》", 31 January 2007, 中国纺织出版社 * |
| 陈运能等: "《新型纺织原料》", 31 October 1998, 中国纺织出版社 * |
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