CN110820166A - Environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles and preparation method thereof - Google Patents
Environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles and preparation method thereof Download PDFInfo
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- CN110820166A CN110820166A CN201911102892.5A CN201911102892A CN110820166A CN 110820166 A CN110820166 A CN 110820166A CN 201911102892 A CN201911102892 A CN 201911102892A CN 110820166 A CN110820166 A CN 110820166A
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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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultra-violet radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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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
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
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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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/558—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 by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/26—Textiles, e.g. towels, beds, cloths
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
Abstract
The invention discloses an environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles, which is prepared from a powdery raw material by a vacuum adsorption molding method, wherein the powdery raw material comprises the following components in parts by weight: 30-65 parts of flame-retardant cotton; 45-70 parts of flame-retardant fibers; 30-50 parts of filling fiber; 30-45 parts of low-melting-point fibers. The environment-friendly recycled material low-VOC constant-density cotton for automobiles has uniform product density, does not need an adhesive, and is environment-friendly and nontoxic. The invention also discloses a preparation method of the environment-friendly recycled material low-VOC (volatile organic compound) automobile equal-density cotton, which is simple in process and convenient to operate.
Description
Technical Field
The invention relates to the technical field of automobile articles, in particular to environment-friendly recycled material low-VOC (volatile organic compound) automobile equal-density cotton and a preparation method thereof.
Background
Soundproof cotton is widely used in automobiles, and the soundproof cotton can play roles in sound insulation, heat insulation, buffering and the like. The sound insulation cotton is generally made of proper fibers, and the fiber porous sound insulation material has a large number of tiny communicated pores inside, so that sound waves can penetrate into the material along the pores to generate friction with the material to convert sound energy into heat energy. The specific sound insulation principle is as follows: the sound produced by the vibration of the object → the sound wave is transmitted in the air → the cotton has a multi-fiber structure → the sound wave passes through the reflection, mutual superposition and collision of numerous fibers when passing through the cotton, the energy of the sound wave is converted into heat energy → the intensity of the sound wave is weakened → the sound disappears.
However, the conventional soundproof cotton for automobiles has the following defects:
(1) the soundproof cotton is generally formed by pressing through a die, the density of places with different thicknesses is different, the soundproof effect is unbalanced, and the use experience is not good;
(2) adhesive is generally needed in soundproof cotton preparation, and the adhesive can generate toxic gas, so that the product is difficult to recycle.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the environment-friendly recycled material low-VOC constant-density cotton for the automobiles, which has uniform product density, does not need an adhesive, and is environment-friendly and nontoxic.
The invention also aims to provide a preparation method of the environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles, which is simple in process and convenient to operate.
One of the purposes of the invention is realized by adopting the following technical scheme:
the low-VOC constant-density cotton for the automobiles is prepared from powdery raw materials by a vacuum adsorption molding method, wherein the powdery raw materials comprise the following components in parts by weight: 30-65 parts of flame-retardant cotton; 45-70 parts of flame-retardant fibers; 30-50 parts of filling fiber; 30-45 parts of low-melting-point fibers.
Further, the filling fibers include filling fiber 15D and filling fiber 6D; the low-melting-point fiber is 4080 fiber.
The second purpose of the invention is realized by adopting the following technical scheme:
a preparation method of low-VOC (volatile organic compound) environment-friendly recycled material equal-density cotton for automobiles comprises the following steps:
opening: mixing the flame-retardant cotton, the flame-retardant fibers, the filling fibers and the low-melting-point fibers, loosening the mixture in an opener, and uniformly mixing to obtain mixed fibers;
a disinfection and decomposition step: feeding the mixed fiber into a disinfection reaction chamber for disinfection to obtain purified fiber;
powder preparation: breaking the purified fibers into powder to obtain powder fibers;
a vacuum adsorption step: spraying the powdery fiber into a vacuum adsorption mould for preliminary forming to obtain a preliminary formed product;
a high-temperature shaping step: removing the primary formed product from the vacuum adsorption mold, placing the primary formed product in a shaping mold, and heating and forming to obtain a semi-finished product;
cooling and cutting: and cooling the semi-finished product, and cutting into a preset shape to obtain the product.
Further, in the step of sterilizing and decomposing, a bearing tray, a steam generator, a carrier and an ultraviolet lamp are arranged in the sterilizing reaction chamber, and a plurality of through holes are formed in the bottom of the bearing tray; the steam generator is arranged below the bearing tray; the carrier is arranged above the bearing tray, a hole which is communicated up and down is arranged along the thickness direction of the carrier, and the inner wall of the hole is coated with photocatalyst.
Further, the ultraviolet lamp is arranged above the carrier, and light rays of the ultraviolet lamp are projected towards the inside of the hole.
Further, the photocatalyst is nano titanium dioxide.
Further, in the vacuum adsorption step, a primary molding cavity is arranged in the vacuum adsorption mold, air in the primary molding cavity is pumped out by a vacuum pump to form negative pressure, and the powdery fibers are adsorbed on the surface of the primary molding cavity; and simultaneously heating the primary forming cavity.
Further, in the high-temperature shaping step, a manipulator is taken, a grabbing part of the manipulator is a vacuum negative pressure part, and the primary molded product is removed from the vacuum adsorption mold through the manipulator.
Further, in the high-temperature shaping step, the heating temperature is 150-.
Further, in the cooling cutting step, the semi-finished product is cooled by cold air.
Compared with the prior art, the invention has the beneficial effects that:
(1) the environment-friendly recycled material low-VOC (volatile organic compound) low-density cotton for automobiles is prepared by firstly scattering raw materials into powder and then carrying out adsorption molding on the powder in a vacuum mode, so that the phenomenon of uneven product density caused by the traditional compression molding mode is avoided. And the raw materials for preparation do not need to use an adhesive, so that the phenomenon of toxic hazard of the adhesive is avoided, and the recovery of waste products is facilitated.
(2) The preparation method of the environment-friendly recycled material low-VOC (volatile organic compound) automobile equal-density cotton has a simple process and is convenient to operate.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
The environment-friendly recyclable material low-VOC (volatile organic compound) constant-density cotton for automobiles is prepared by a vacuum adsorption molding method from powdery raw materials, wherein the powdery raw materials comprise the following components in parts by weight: 30-65 parts of flame-retardant cotton; 45-70 parts of flame-retardant fibers; 30-50 parts of filling fiber; 30-45 parts of low-melting-point fibers.
As a further embodiment, the powdered raw material comprises the following components in parts by weight: the filling fibers comprise filling fibers 15D and filling fibers 6D; the low-melting-point fiber is 4080 fiber.
According to the automobile equal-density cotton, the adopted preparation raw materials are firstly scattered into powder, and then the powder is subjected to adsorption molding in a vacuum mode, so that the phenomenon of uneven product density caused by a traditional compression molding mode is avoided. And the raw materials for preparation do not need to use an adhesive, so that the phenomenon of toxic hazard of the adhesive is avoided, and the recovery of waste products is facilitated. In addition, the low-melting point fiber (4080 fiber) is a heat-bonding fiber, which has low melting point, good fluidity and low price, and the low-melting point fiber is melted during heat forming, so that all raw materials are bonded together.
A preparation method of low-VOC (volatile organic compound) environment-friendly recycled material equal-density cotton for automobiles comprises the following steps:
opening: mixing the flame-retardant cotton, the flame-retardant fibers, the filling fibers and the low-melting-point fibers, loosening the mixture in an opener, and uniformly mixing the mixture to obtain mixed fibers;
a disinfection and decomposition step: feeding the mixed fiber into a disinfection reaction chamber for disinfection to obtain purified fiber;
powder preparation: breaking the purified fibers into powder to obtain powder fibers;
a vacuum adsorption step: spraying the powdery fiber into a vacuum adsorption mould for preliminary forming to obtain a preliminary formed product;
a high-temperature shaping step: removing the primary formed product from the vacuum adsorption mould, placing the primary formed product in a shaping mould, and heating and forming to obtain a semi-finished product;
cooling and cutting: cooling the semi-finished product, and cutting into a preset shape to obtain the final product.
As a further implementation mode, in the step of disinfection and decomposition, a bearing tray, a steam generator, a carrier and an ultraviolet lamp are arranged in the disinfection reaction chamber, and a plurality of through holes are formed in the bottom of the bearing tray; the steam generator is arranged below the bearing tray; the carrier is arranged above the bearing tray, a hole which is communicated up and down is arranged along the thickness direction of the carrier, and the inner wall of the hole is coated with photocatalyst. The ultraviolet lamp is preferably arranged above the carrier, and the light of the ultraviolet lamp is projected towards the inside of the hole. When carrying out the disinfection and decomposition, the hybrid fiber is put on the tray, steam generator produces high temperature steam, high temperature steam gets into from the through-hole of tray bottom, the hybrid fiber then flows through, at this in-process, high temperature steam plays the disinfection effect to the hybrid fiber, can take out Volatile Organic Compounds (VOC) such as aldehyde, benzene class in the hybrid fiber simultaneously, the high temperature steam who mixes the VOC gas passes through the hole of carrier, take place catalytic decomposition reaction under the effect of photocatalyst and ultraviolet ray.
In a further embodiment, the photocatalyst is nano titanium dioxide, which has the performances of thread resistance, antibiosis, self-cleaning and ageing resistance, and can improve the decomposition rate of VOC gas.
As a further implementation mode, in the vacuum adsorption step, a primary forming cavity is arranged in a vacuum adsorption mould, air in the primary forming cavity is pumped out by using a vacuum pump and forms negative pressure, the powdery fiber is adsorbed on the surface of the primary forming cavity, the primary forming cavity is heated at the same time, and 4080 fiber powder is melted, so that the adsorbed mixed powder forms a whole.
In a further embodiment, in the high-temperature setting step, a manipulator is taken out, a gripping part of the manipulator is a vacuum negative pressure part, and the manipulator removes the primary molded product from the vacuum adsorption mold. The vacuum mode moves and gets the primary formed article, moves and gets efficiently, and can not lead to the primary formed article to damage.
As a further embodiment, in the high-temperature setting step, the heating temperature is 150-200 ℃. At the temperature, the low-melting-point fiber (4080 fiber) is melted, the flame-retardant cotton, the flame-retardant fiber and the filling fiber are softened, and the melted 4080 fiber can bond other raw materials together, so that the product has good bonding degree and high integrity.
As a further embodiment, in the cooling cutting step, the semi-finished product is cooled by cold air. The cooling efficiency of the cold air is high, and the heat of the semi-finished product can be rapidly taken away, so that the temperature of the semi-finished product is reduced to the room temperature.
The following are specific examples of the present invention, and raw materials, equipments and the like used in the following examples can be obtained by purchasing them unless otherwise specified.
Example 1:
an environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles is prepared from 30 parts of flame-retardant cotton; 45 parts of flame-retardant fiber; 30 parts of filling fiber (including 6D 15 parts of filling fiber and 15D15 parts of filling fiber); 4080 and 30 parts of fiber, wherein the preparation method comprises the following steps:
opening: mixing the flame-retardant cotton, the flame-retardant fibers, the filling fibers and the low-melting-point fibers, loosening the mixture in an opener, and uniformly mixing the mixture to obtain mixed fibers;
a disinfection and decomposition step: the mixed fiber is sent into a disinfection reaction chamber for disinfection, when disinfection and decomposition are carried out, the mixed fiber is placed on a bearing tray, a steam generator generates high-temperature steam, the high-temperature steam enters from a through hole at the bottom of the bearing tray, flows through the mixed fiber and then flows out, in the process, the high-temperature steam has a disinfection effect on the mixed fiber, Volatile Organic Compounds (VOC) such as aldehydes, benzenes and the like in the mixed fiber can be taken out, the high-temperature steam mixed with VOC gas passes through holes of a carrier and undergoes catalytic decomposition reaction under the action of nano titanium dioxide powder and ultraviolet light, and the purified fiber is obtained;
powder preparation: breaking the purified fibers into powder to obtain powder fibers;
a vacuum adsorption step: spraying powdery fibers into a vacuum adsorption mould, wherein a primary forming cavity is arranged in the vacuum adsorption mould, pumping air in the primary forming cavity out by using a vacuum pump to form negative pressure, adsorbing the powdery fibers on the surface of the primary forming cavity, heating the primary forming cavity at the same time, and melting 4080 fiber powder to enable the adsorbed mixed powder to form a whole to obtain a primary formed product;
a high-temperature shaping step: taking a manipulator, wherein a grabbing part of the manipulator is a vacuum negative pressure part, moving the primary formed product out of a vacuum adsorption mould through the manipulator, placing the primary formed product in a shaping mould, and heating to 150 ℃ for forming to obtain a semi-finished product;
cooling and cutting: cooling the semi-finished product with cold air, and cutting into preset shape.
Example 2:
example 2 differs from example 1 in that: the powdery raw materials comprise the following components in parts by weight: 65 parts of flame-retardant cotton; 70 parts of flame-retardant fiber; 50 parts of filling fiber (6D 30 parts of filling fiber and 15D 20 parts of filling fiber); 45 parts of low-melting-point fiber.
The rest is the same as in embodiment 1.
Example 3:
the difference between the embodiment 3 and the embodiment 1 is that the powdery raw material comprises the following components in parts by weight: 45 parts of flame-retardant cotton; 55 parts of flame-retardant fiber; 35 parts of filling fiber (6D 10 parts of filling fiber and 15D25 parts of filling fiber); 40 parts of low-melting-point fiber;
in the high-temperature setting step, the heating temperature is 200 ℃.
The rest is the same as in embodiment 1.
Example 4:
the difference between the embodiment 4 and the embodiment 1 is that the powdery raw material comprises the following components in parts by weight: 55 parts of flame-retardant cotton; 60 parts of flame-retardant fiber; 45 parts of filling fiber (6D 30 parts of filling fiber and 15D15 parts of filling fiber); 35 parts of low-melting-point fiber;
in the high-temperature shaping step, the heating temperature is 180 ℃.
The rest is the same as in embodiment 1.
Example 5:
the difference between the embodiment 5 and the embodiment 1 is that the powdery raw material comprises the following components in parts by weight: 60 parts of flame-retardant cotton; 62 parts of flame-retardant fiber; 40 parts of filling fiber (6D 18 parts of filling fiber and 15D 22 parts of filling fiber); 35 parts of low-melting-point fiber;
in the high-temperature setting step, the heating temperature is 175 ℃.
The rest is the same as in embodiment 1.
Comparative example 1:
comparative example 1 differs from example 1 in that: the flame-retardant cotton, the flame-retardant fibers, the filling fibers and the low-melting-point fibers are formed into products by a traditional pressing forming method, and fiber raw materials are not scattered into powder or subjected to a disinfection reaction step.
Effect evaluation and Performance detection
1. Density test
The densities of the surface, at a thickness of 10cm, at a thickness of 30cm and at a thickness of 50cm were measured from the equal-density cotton for automobiles obtained in examples 1 to 5 and comparative example 1, respectively, and the results are shown in the following table 1.
| Surface density | Density at 10cm | Density at 30cm | Density at 50cm | |
| Example 1 | 65kg/m3 | 66kg/m3 | 66kg/m3 | 67kg/m3 |
| Example 2 | 70kg/m3 | 70kg/m3 | 71kg/m3 | 73kg/m3 |
| Example 3 | 75kg/m3 | 78kg/m3 | 77kg/m3 | 75kg/m3 |
| Example 4 | 90kg/m3 | 91kg/m3 | 93kg/m3 | 92.5kg/m3 |
| Comparative example 1 | 198kg/m3 | 145kg/m3 | 96kg/m3 | 50kg/m3 |
As can be seen from the data in Table 1, the cotton materials obtained in examples 1 to 5 had almost no difference in density at different thicknesses of the same cotton material, and were equal-density cotton. The comparison example is prepared by a traditional press forming method, the density difference is large at positions with different thicknesses, the density of the pressed thin position is large, the density of the pressed thick position is small, and the density difference is large.
2. TVOC test
TABLE 2 TVOC test results record table
As can be seen from the data in Table 2, the isodensity cottons of examples 1-5 have low or no TVOC content, while the cotton of comparative example 1 has no high TVOC content after steam sterilization and photocatalytic degradation.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The low-VOC constant-density cotton for the automobiles is characterized by being prepared from a powdery raw material by a vacuum adsorption molding method, wherein the powdery raw material comprises the following components in parts by weight: 30-65 parts of flame-retardant cotton; 45-70 parts of flame-retardant fibers; 30-50 parts of filling fiber; 30-45 parts of low-melting-point fibers.
2. The environmentally friendly recyclable material low VOC, as constant density cotton for automobiles as claimed in claim 1, wherein the filler fibers comprise filler fibers 15D and filler fibers 6D.
3. The method for preparing the environmentally friendly recycled material low-VOC constant-density cotton for automobiles as claimed in claim 1 or 2, comprising:
opening: mixing the flame-retardant cotton, the flame-retardant fibers, the filling fibers and the low-melting-point fibers, loosening the mixture in an opener, and uniformly mixing to obtain mixed fibers;
a disinfection and decomposition step: feeding the mixed fiber into a disinfection reaction chamber for disinfection to obtain purified fiber;
powder preparation: breaking the purified fibers into powder to obtain powder fibers;
a vacuum adsorption step: spraying the powdery fiber into a vacuum adsorption mould for preliminary forming to obtain a preliminary formed product;
a high-temperature shaping step: removing the primary formed product from the vacuum adsorption mold, placing the primary formed product in a shaping mold, and heating and forming to obtain a semi-finished product;
cooling and cutting: and cooling the semi-finished product, and cutting into a preset shape to obtain the product.
4. The method for preparing the environment-friendly recycled material low-VOC constant-density cotton for automobiles according to claim 3, wherein in the step of sterilizing and decomposing, a bearing tray, a steam generator, a carrier and an ultraviolet lamp are arranged in the sterilizing reaction chamber, and a plurality of through holes are arranged at the bottom of the bearing tray; the steam generator is arranged below the bearing tray; the carrier is arranged above the bearing tray, a hole which is communicated up and down is arranged along the thickness direction of the carrier, and the inner wall of the hole is coated with photocatalyst.
5. The method for preparing environmentally friendly recyclable material low VOC iso-density cotton for automobiles as claimed in claim 4, wherein the ultraviolet lamp is disposed above the carrier, and light from the ultraviolet lamp is projected into the holes.
6. The method for preparing the environmentally friendly recyclable material low-VOC constant density cotton for automobiles as claimed in claim 4, wherein the photocatalyst is nano titanium dioxide.
7. The method for manufacturing constant-density cotton for automobiles with low VOC as claimed in claim 3, wherein in the vacuum adsorption step, a primary molding chamber is provided in the vacuum adsorption mold, air in the primary molding chamber is evacuated by a vacuum pump to form a negative pressure, and the powdered fibers are adsorbed on the surface of the primary molding chamber; and simultaneously heating the primary forming cavity.
8. The method for preparing low-VOC constant density cotton for automobiles according to claim 3, wherein in the step of high-temperature shaping, a mechanical arm is taken, a grabbing part of the mechanical arm is a vacuum negative pressure part, and the mechanical arm is used for removing the primary molded product from the vacuum adsorption mold.
9. The method as claimed in claim 3, wherein the heating temperature in the high temperature setting step is 150-200 ℃.
10. The method for manufacturing environmentally friendly recyclable material low VOC constant density cotton for automobiles as claimed in claim 3, wherein the semi-finished product is cooled by cold air in the cooling cutting step.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102892.5A CN110820166A (en) | 2019-11-12 | 2019-11-12 | Environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102892.5A CN110820166A (en) | 2019-11-12 | 2019-11-12 | Environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles and preparation method thereof |
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| CN110820166A true CN110820166A (en) | 2020-02-21 |
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| CN201911102892.5A Pending CN110820166A (en) | 2019-11-12 | 2019-11-12 | Environment-friendly recycled material low-VOC (volatile organic compound) constant-density cotton for automobiles and preparation method thereof |
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