CN111334931A - Novel polypropylene melt-blown fabric formula and processing technology thereof - Google Patents
Novel polypropylene melt-blown fabric formula and processing technology thereof Download PDFInfo
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- CN111334931A CN111334931A CN202010190595.7A CN202010190595A CN111334931A CN 111334931 A CN111334931 A CN 111334931A CN 202010190595 A CN202010190595 A CN 202010190595A CN 111334931 A CN111334931 A CN 111334931A
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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
- D04H1/56—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 association with fibre formation, e.g. immediately following extrusion of staple fibres
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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
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/106—Filtering
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- 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
- D04H1/4291—Olefin series
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a novel polypropylene melt-blown fabric formula which is characterized by comprising the following components in percentage by weight: graphene material: 2-15%; high-carbon alkane: 0.001-0.1%; polypropylene particles: 80% -87%; auxiliary agent: 1% -6%; titanium dioxide: 5% -9%. The graphene material comprises one of graphene and graphene oxide, or a combination thereof. The auxiliary agent comprises any one or combination of more of a coupling agent, a dispersing agent and an antioxidant. The dispersing agent is any one of triethyl hexyl phosphoric acid, methyl amyl alcohol, cellulose derivatives, polyacrylamide and fatty acid polyglycol ester. The coupling agent comprises titanate esters, and the titanate esters comprise butyl titanate and isopropyl titanate. The invention has antibacterial property and charge adsorption property, good filtering effect, large dust holding capacity and high use safety; the melt-blown fabric has excellent quality and performance, and the preparation method has mild melting condition and low production difficulty.
Description
Technical Field
The invention relates to the technical field of melt-blown fabric, in particular to a novel polypropylene melt-blown fabric formula and a processing technology thereof.
Background
The melt blowing method, which began in the 50's of the 20 th century, is a method for preparing ultrafine fibers by blowing a polymer melt at a high speed and high temperature to rapidly draw the polymer melt. The polypropylene has become one of the most common and popular varieties in the melt-blowing process by virtue of the advantages of rich raw material sources, simple synthesis method, good processability, excellent mechanical properties and the like.
The polypropylene melt fiber produced by the melt-blown technology is fine, and the obtained melt-blown fabric has large specific surface area, small pores and large porosity, so the application characteristics of filterability, shielding property, heat insulation property, oil absorption property and the like are difficult to realize by non-woven fabrics produced by other processes. Generally, polypropylene melt-blown fabrics are widely used in the fields of filter materials, medical and health materials, oil absorbing materials, wiping cloths, thermal materials, battery separator materials, sound insulating materials, and the like.
In order to expand the application range of the polypropylene melt-blown fabric, the comprehensive properties of the polypropylene fiber are generally changed by adding inorganic fillers. However, the following problems can be caused in specific application: (1) dispersion problems with the addition of inorganic fillers. Inorganic fillers of different sizes have a significant influence on the polymer properties, and generally, the smaller the particle size, the better the overall polymer properties are, but if the size of the filler is too small, the agglomeration problem may occur. Once the inorganic filler is agglomerated in the fiber, the toughness of the agglomerated fiber is very poor. (2) The control of the addition amount of the inorganic filler. If the amount of the additive is too small, the performance of the fiber cannot be improved, and if the amount of the additive is too large, the performance of the fiber itself is affected. Therefore, how to effectively improve the comprehensive performance of the fibers by adding the inorganic filler is a research hotspot of the melt-blowing process.
In the prior art related to the preparation of graphene/polypropylene composite master batches and melt-blown cloth by a melt-blowing process, a large amount of various additives are used for uniform mixing, and the various additives and additives can finally remain in the graphene/polypropylene composite master batches. The processing performance of the graphene/polypropylene composite master batch is influenced to different degrees, the quality of a melt-blown fabric product is reduced, and the performance is reduced. Meanwhile, graphene is used as a two-dimensional material, although the thickness dimension is in the nanometer level, the range of the sheet layer dimension is several micrometers to hundreds of micrometers, so that for a melt-blown process, graphene with an excessively large sheet layer dimension can form agglomeration and accumulation in the melt-blown fabric production process, the melt-blown fabric quality is damaged, the problem of serious nozzle blockage occurs, and the production is influenced.
The melt-blown cloth takes polypropylene as a main raw material, the fiber diameter can reach 1-5 microns, and the superfine fibers with unique capillary structures increase the number and the surface area of fibers in unit area, so that the melt-blown cloth has good filtering property, shielding property, heat insulation property and oil absorption property, and can be used in the fields of air, liquid filtering materials, isolating materials, absorbing materials, mask materials, heat-insulating materials, wiping cloth and the like.
The melt-blown fabric is a non-woven fabric which is formed by extruding, melting and plasticizing high polymer resin through a screw extruder, accurately metering the high polymer resin through a metering pump, feeding the high polymer resin to a spinning assembly, drawing the high polymer resin into superfine fibers under the action of high-speed high-pressure hot air flow, and collecting the superfine fibers on a collecting device. Since the meltblown fabric has a fine structure, a large specific surface area, small pores and a large porosity, it has excellent characteristics such as filtration, shielding, heat insulation and oil absorption, and thus is widely used in the fields of medical and industrial masks, thermal insulation materials, filter materials, medical and sanitary materials, oil absorption materials, battery separators and sound insulation materials, and meanwhile, the functional meltblown fabric has been a research focus due to its versatility (e.g., antibacterial, electret, far infrared, etc.).
Current melt and spout cloth structure in filtering the use, traditional melt and spout cloth structure is not ideal to the filter effect of pollutants such as haze, and partial melt and spout cloth adopts when the preparation to add graphite alkene material, becomes fused integrative structure, can not carry out the dismouting during the use and change, directly abandons after the use, causes the waste.
Disclosure of Invention
In order to overcome the problems, the invention provides a novel polypropylene melt-blown fabric formula and a processing technology thereof.
The technical scheme of the invention is to provide a novel polypropylene melt-blown fabric formula which is characterized by comprising the following components in percentage by weight:
graphene material: 2-15%;
high-carbon alkane: 0.001-0.1%;
polypropylene particles: 80% -87%;
auxiliary agent: 1% -6%;
titanium dioxide: 5% -9%.
Further, the graphene material includes one of graphene, graphene oxide, or a combination thereof.
Further, the auxiliary agent comprises any one or a combination of more of a coupling agent, a dispersing agent and an antioxidant.
Further, the dispersant is any one of triethylhexyl phosphoric acid, methyl amyl alcohol, cellulose derivatives, polyacrylamide and fatty acid polyglycol ester.
Further, the coupling agent comprises titanate esters, and the titanate esters comprise butyl titanate and isopropyl titanate.
Furthermore, the particle size of the graphene material is less than or equal to 6 microns.
Further, the particle size of the graphene material is preferably 2.2 μm.
A novel polypropylene melt-blown fabric processing technology is characterized by comprising the following steps:
(1) preparing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent in parts by weight;
(2) mixing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent one by one, stirring and mixing;
(3) heating the mixed raw materials into a melt at the heating temperature of 187-194 ℃;
(4) filtering the melt, and filtering impurities to obtain a filtered melt;
(5) after adding the melt into the polymer, carrying out a spinning process to obtain a melt-blown fiber line;
(6) the melt-blown fiber threads are woven into cloth, so that melt-blown cloth with various specifications can be obtained;
further, in the step (4), a composite filter screen is adopted for filtering, the composite filter screen comprises a plurality of layers of fine filter screens, and the meshes of the fine filter screens on the surface are heightened layer by layer.
Further, in the step (5), the spinning process conveys quantitative melt, the quantitative melt is sprayed by a nozzle, and a melt-blown fiber line is formed by the blowing of high-pressure hot air flow.
The invention has the beneficial effects that: the novel polypropylene melt-blown fabric formula and the processing technology thereof have the following advantages:
1, the superfine fiber has good light resistance, weather resistance and heat resistance, has ultrahigh dispersibility and can be suitable for melt-blown non-woven fabrics;
2, the graphene is uniformly dispersed, so that the problem of nozzle blockage caused by agglomeration of graphene materials is effectively solved, and the method is suitable for a melt-blowing process and manufacturing melt-blown cloth;
3 has antibacterial property and charge adsorption property, good filtering effect, large dust holding capacity and high use safety;
4 has high compatibility with polypropylene resin, good cooperativity with other additives, strong coloring ability and small color difference, and can effectively reduce the phenomena of yarn breakage and yarn dropping in the spinning process
5 the melt-blown fabric has excellent quality and performance, and the preparation method has mild melting condition and low production difficulty.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1:
the invention relates to a novel polypropylene melt-blown fabric formula which is characterized by comprising the following components in percentage by weight:
graphene material: 3 percent; high-carbon alkane: 0.02 percent; auxiliary agent: 1 percent; titanium dioxide: 5 percent.
Polypropylene particles: the balance;
the graphene material comprises one of graphene and graphene oxide, or a combination thereof.
The auxiliary agent comprises any one or combination of more of a coupling agent, a dispersing agent and an antioxidant.
The dispersing agent is any one of triethyl hexyl phosphoric acid, methyl amyl alcohol, cellulose derivatives, polyacrylamide and fatty acid polyglycol ester.
Further, the coupling agent comprises titanate esters, and the titanate esters comprise butyl titanate and isopropyl titanate.
Further, the particle size of the graphene material is preferably 2.2 μm.
A novel polypropylene melt-blown fabric processing technology comprises the following steps:
(1) preparing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent in parts by weight;
(2) mixing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent one by one, stirring and mixing;
(3) heating the mixed raw materials into a melt, wherein the heating temperature is 187 ℃;
(4) filtering the melt, and filtering impurities to obtain a filtered melt;
(5) after adding the melt into the polymer, carrying out a spinning process to obtain a melt-blown fiber line;
(6) the melt-blown fiber threads are woven into cloth, so that melt-blown cloth with various specifications can be obtained;
in the step (4), the filtration adopts a composite filter screen, the composite filter screen comprises a plurality of layers of fine filter screens, and the meshes of the fine filter screens on the surface are heightened layer by layer.
In the step (5), quantitative melt is conveyed in the spinning process, is sprayed by a spray head, and is blown by high-pressure hot air to form melt-blown fiber threads.
Example 2:
the invention relates to a novel polypropylene melt-blown fabric formula which is characterized by comprising the following components in percentage by weight:
graphene material: 10 percent;
high-carbon alkane: 0.05 percent;
auxiliary agent: 3 percent;
titanium dioxide: 7 percent.
Polypropylene particles: the balance;
the graphene material comprises one of graphene and graphene oxide, or a combination thereof.
The auxiliary agent comprises any one or combination of more of a coupling agent, a dispersing agent and an antioxidant.
The dispersing agent is any one of triethyl hexyl phosphoric acid, methyl amyl alcohol, cellulose derivatives, polyacrylamide and fatty acid polyglycol ester.
Further, the coupling agent comprises titanate esters, and the titanate esters comprise butyl titanate and isopropyl titanate.
Further, the particle size of the graphene material is preferably 2.2 μm.
A novel polypropylene melt-blown fabric processing technology comprises the following steps:
(1) preparing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent in parts by weight;
(2) mixing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent one by one, stirring and mixing;
(3) heating the mixed raw materials into a melt, wherein the heating temperature is 190 ℃;
(4) filtering the melt, and filtering impurities to obtain a filtered melt;
(5) after adding the melt into the polymer, carrying out a spinning process to obtain a melt-blown fiber line;
(6) the melt-blown fiber threads are woven into cloth, so that melt-blown cloth with various specifications can be obtained;
in the step (4), the filtration adopts a composite filter screen, the composite filter screen comprises a plurality of layers of fine filter screens, and the meshes of the fine filter screens on the surface are heightened layer by layer.
In the step (5), quantitative melt is conveyed in the spinning process, is sprayed by a spray head, and is blown by high-pressure hot air to form melt-blown fiber threads.
Example 3:
the invention relates to a novel polypropylene melt-blown fabric formula which is characterized by comprising the following components in percentage by weight:
graphene material: 12 percent;
high-carbon alkane: 0.08 percent;
auxiliary agent: 6 percent;
titanium dioxide: 9 percent;
polypropylene particles: the balance;
the graphene material comprises one of graphene and graphene oxide, or a combination thereof.
The auxiliary agent comprises any one or combination of more of a coupling agent, a dispersing agent and an antioxidant.
The dispersing agent is any one of triethyl hexyl phosphoric acid, methyl amyl alcohol, cellulose derivatives, polyacrylamide and fatty acid polyglycol ester.
Further, the coupling agent comprises titanate esters, and the titanate esters comprise butyl titanate and isopropyl titanate.
Further, the particle size of the graphene material is preferably 2.2 μm.
A novel polypropylene melt-blown fabric processing technology comprises the following steps:
(1) preparing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent in parts by weight;
(2) mixing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent one by one, stirring and mixing;
(3) heating the mixed raw materials into a melt at a heating temperature of 194 ℃;
(4) filtering the melt, and filtering impurities to obtain a filtered melt;
(5) after adding the melt into the polymer, carrying out a spinning process to obtain a melt-blown fiber line;
(6) the melt-blown fiber threads are woven into cloth, so that melt-blown cloth with various specifications can be obtained;
in the step (4), the filtration adopts a composite filter screen, the composite filter screen comprises a plurality of layers of fine filter screens, and the meshes of the fine filter screens on the surface are heightened layer by layer.
In the step (5), quantitative melt is conveyed in the spinning process, is sprayed by a spray head, and is blown by high-pressure hot air to form melt-blown fiber threads.
The above embodiment is only one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The novel polypropylene melt-blown fabric formula is characterized by comprising the following components in percentage by weight:
graphene material: 2-15%;
high-carbon alkane: 0.001-0.1%;
polypropylene particles: 80% -87%;
auxiliary agent: 1% -6%;
titanium dioxide: 5% -9%.
2. The novel polypropylene meltblown formulation according to claim 1, wherein: the graphene material comprises one of graphene and graphene oxide, or a combination thereof.
3. The novel polypropylene meltblown formulation according to claim 1, wherein: the auxiliary agent comprises any one or combination of more of a coupling agent, a dispersing agent and an antioxidant.
4. The novel polypropylene meltblown formulation according to claim 3, wherein: the dispersing agent is any one of triethyl hexyl phosphoric acid, methyl amyl alcohol, cellulose derivatives, polyacrylamide and fatty acid polyglycol ester.
5. The novel polypropylene meltblown formulation according to claim 3, wherein: the coupling agent comprises titanate esters, and the titanate esters comprise butyl titanate and isopropyl titanate.
6. The novel polypropylene meltblown formulation according to claim 1 or 2, characterized in that: the particle size of the graphene material is less than or equal to 6 mu m.
7. The novel polypropylene meltblown formulation according to claim 4 wherein: the particle size of the graphene material is preferably 2.2 μm.
8. A novel polypropylene melt-blown fabric processing technology is characterized by comprising the following steps:
(1) preparing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent in parts by weight;
(2) mixing polypropylene particles, a graphene material, high-carbon alkane, titanium dioxide and an auxiliary agent one by one, stirring and mixing;
(3) heating the mixed raw materials into a melt at the heating temperature of 187-194 ℃;
(4) filtering the melt, and filtering impurities to obtain a filtered melt;
(5) after adding the melt into the polymer, carrying out a spinning process to obtain a melt-blown fiber line;
(6) the melt-blown fiber threads are woven into cloth, and melt-blown cloth with various specifications can be obtained.
9. The novel polypropylene melt-blown fabric processing technology according to claim 8, wherein: in the step (4), the filtration adopts a composite filter screen, the composite filter screen comprises a plurality of layers of fine filter screens, and the meshes of the fine filter screens on the surface are heightened layer by layer.
10. The novel polypropylene melt-blown fabric processing technology according to claim 8, wherein: in the step (5), quantitative melt is conveyed in the spinning process, is sprayed by a spray head, and is blown by high-pressure hot air to form melt-blown fiber threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010190595.7A CN111334931A (en) | 2020-03-18 | 2020-03-18 | Novel polypropylene melt-blown fabric formula and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010190595.7A CN111334931A (en) | 2020-03-18 | 2020-03-18 | Novel polypropylene melt-blown fabric formula and processing technology thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876903A (en) * | 2020-07-08 | 2020-11-03 | 湖南仁康医养家具科技有限公司 | Non-woven fabric suitable for nursing massage bed and preparation method thereof |
| CN112251910A (en) * | 2020-09-07 | 2021-01-22 | 陕西金灃科技有限公司 | Mineral graphene melt-blown fabric and preparation method thereof |
| CN112267210A (en) * | 2020-09-07 | 2021-01-26 | 陕西金灃科技有限公司 | Modified mineral substance graphene melt-blown fabric and preparation method thereof |
| CN112358679A (en) * | 2020-10-30 | 2021-02-12 | 深圳前海石墨烯产业有限公司 | Graphene polypropylene composite material, preparation method, melt-blown cloth and filtering device |
| CN112522802A (en) * | 2020-12-15 | 2021-03-19 | 湖南工程学院 | Anti-ultraviolet antibacterial polypropylene filament and preparation method thereof |
-
2020
- 2020-03-18 CN CN202010190595.7A patent/CN111334931A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876903A (en) * | 2020-07-08 | 2020-11-03 | 湖南仁康医养家具科技有限公司 | Non-woven fabric suitable for nursing massage bed and preparation method thereof |
| CN112251910A (en) * | 2020-09-07 | 2021-01-22 | 陕西金灃科技有限公司 | Mineral graphene melt-blown fabric and preparation method thereof |
| CN112267210A (en) * | 2020-09-07 | 2021-01-26 | 陕西金灃科技有限公司 | Modified mineral substance graphene melt-blown fabric and preparation method thereof |
| CN112358679A (en) * | 2020-10-30 | 2021-02-12 | 深圳前海石墨烯产业有限公司 | Graphene polypropylene composite material, preparation method, melt-blown cloth and filtering device |
| CN112522802A (en) * | 2020-12-15 | 2021-03-19 | 湖南工程学院 | Anti-ultraviolet antibacterial polypropylene filament and preparation method thereof |
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Effective date of registration: 20210624 Address after: Room 44, North 1808, building 2, Hualong Plaza, Jiaxing Economic Development Zone, Zhejiang Province Applicant after: Jiaxing Afu Information Technology Co.,Ltd. Address before: Room 506, 5 / F, building 2, Lianchuang building, intersection of Guangyi road and Qingfeng Road, Nanhu District, Jiaxing City, Zhejiang Province, 314003 Applicant before: Jiaxing Afu Textile Co.,Ltd. |
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Application publication date: 20200626 |