CN111574772A - Electret master batch, melt-blown fabric and preparation method thereof - Google Patents
Electret master batch, melt-blown fabric and preparation method thereof Download PDFInfo
- Publication number
- CN111574772A CN111574772A CN202010411034.5A CN202010411034A CN111574772A CN 111574772 A CN111574772 A CN 111574772A CN 202010411034 A CN202010411034 A CN 202010411034A CN 111574772 A CN111574772 A CN 111574772A
- Authority
- CN
- China
- Prior art keywords
- polypropylene
- electret
- hot rolling
- drafting
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 36
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- -1 polypropylene Polymers 0.000 claims abstract description 48
- 239000004743 Polypropylene Substances 0.000 claims abstract description 44
- 229920001155 polypropylene Polymers 0.000 claims abstract description 44
- 239000000835 fiber Substances 0.000 claims abstract description 38
- 238000005098 hot rolling Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 9
- 239000011787 zinc oxide Substances 0.000 claims description 9
- 239000004760 aramid Substances 0.000 claims description 6
- 229920003235 aromatic polyamide Polymers 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000004049 embossing Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 14
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- 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
- D04H1/54—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
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
- Electrostatic Separation (AREA)
Abstract
The embodiment of the invention discloses an electret master batch, melt-blown fabric and a preparation method thereof, wherein the electret master batch comprises polypropylene, silicon dioxide, electret powder, wax and an antioxidant; the method comprises the following steps: mixing and melting the electret master batch, spraying out, and performing primary drafting to form fine fibers; placing the fine fibers in a hot rolling mill for primary hot rolling; after the fine fiber subjected to primary hot rolling is cooled, secondary drafting is carried out, and electret treatment is carried out to form superfine fiber; arranging screens on two sides of the superfine fibers, placing the superfine fibers in a hot rolling mill for secondary hot rolling, cooling and rolling to obtain melt-blown fabric; wherein, the wind pressure of the hot wind in the primary drafting process is less than that of the hot wind in the secondary drafting process. The invention realizes the improvement of the filtration performance of the melt-blown fabric by performing two-way regulation on the internal structure and the external structure of the melt-blown fabric by drafting the electret master batch twice and controlling the drafting condition of each time and combining the specific change of the hot rolling step.
Description
Technical Field
The embodiment of the invention relates to the field of melt-blown fabric materials, and particularly relates to an electret master batch, melt-blown fabric and a preparation method thereof.
Background
The electret meltblown fabric is prepared by taking polypropylene as a main raw material, adding an electret material and performing electret treatment on the electret material to form a large number of electrodes among charged fibers, so that the charged fibers can adsorb most charged particles in the environment like a magnet and polarize the uncharged particles, and the adsorption effect is realized. Through the operation, the melt-blown fabric not only has a common interception function, but also has an electrostatic adsorption function, so that the filtering efficiency is effectively improved on the premise of not increasing the ventilation resistance, and the filtering performance of the excellent electret melt-blown fabric can reach more than 95 percent, so that the standard of an N95 mask is met.
However, in the prior art, an electret agent and other additives are directly added into a polypropylene material, mixed and melted, and thermally sprayed to form a fiber structure, and then the fiber structure is formed into electret meltblown through electret treatment, the filtration efficiency of the electret meltblown through the operation can generally reach about 93%, although the filtration efficiency is much higher than about 55% of the common meltblown, the filtration efficiency is still generally kept about 93%, and a certain error is usually caused according to the error of the operation process and the environment at each time, so that the standard of N95 can not be guaranteed at each time, and the requirement of N97 is not generally met, which is the reason that N93 masks on the market are relatively more, and the requirement of N95 is generally met at least in a medical environment, therefore, the mask supply of N95 and the above standards is not required, and under the condition of occurrence of epidemic situation and the like, and the market demand is difficult to meet. Therefore, a preparation process capable of effectively improving the filtration efficiency and ensuring the stability of the melt-blown fabric performance is an urgent problem to be solved at present.
Disclosure of Invention
Therefore, the electret master batch, the melt-blown fabric and the preparation method thereof are provided in the embodiment of the invention, the electret master batch is drafted twice, and the specific change of the hot rolling step is combined while the drafting condition of each time is controlled, so that the filtration performance of the melt-blown fabric is improved by bidirectionally adjusting the internal structure and the external structure of the melt-blown fabric.
In order to achieve the above object, an embodiment of the present invention provides the following:
in one aspect of the embodiment of the present invention, an electret master batch is provided, which includes polypropylene, silicon dioxide, electret powder, wax and an antioxidant, and based on the total weight of the electret master batch, the content of the polypropylene is 70 to 80 wt%, the content of the silicon dioxide is 5 to 15 wt%, and the content of the electret powder is 5 to 15 wt%. The content of the wax is 5-15 wt%, and the content of the antioxidant is 0.1-0.5 wt%.
Preferably, the polypropylene is modified by aramid compounds, glass fibers and nano zinc oxide.
In another aspect of an embodiment of the present invention, there is provided a method of manufacturing a meltblown fabric, the method comprising:
1) mixing and melting the electret master batch, spraying out, and performing primary drafting to form fine fibers;
2) placing the fine fibers in a hot rolling mill for primary hot rolling;
3) after the fine fiber subjected to primary hot rolling is cooled, secondary drafting is carried out, and electret treatment is carried out to form superfine fiber;
4) arranging screens on two sides of the superfine fibers, placing the superfine fibers in a hot rolling mill for secondary hot rolling, cooling and rolling to obtain melt-blown fabric; wherein,
the wind pressure of the hot wind in the primary drafting process is smaller than that of the hot wind in the secondary drafting process.
Preferably, the step 1) is modified polypropylene, and the preparation method of the modified polypropylene specifically comprises the following steps:
11) mixing and smelting a part of polypropylene and aramid compounds, extruding, granulating and cooling to obtain pretreated particles;
12) and melting the pretreated particles, adding the other part of polypropylene and glass fibers, continuously mixing at a high speed for 15-30min, adding nano zinc oxide, mixing, melting, extruding and granulating to obtain the modified polypropylene.
Preferably, the ratio of the amount of the polypropylene in the step 11) to the amount of the polypropylene in the step 12) is 3: 6-8;
the dosage of the aromatic amide compound is 0.3-1% of the dosage of the polypropylene, the dosage of the glass fiber is 10-20% of the dosage of the polypropylene, and the dosage of the nano zinc oxide is 5-10% of the dosage of the polypropylene.
Preferably, in the step 1), the temperature of the hot air in the primary drawing process is 240-250 ℃, and the air pressure of the hot air is 0.08-0.12 MPa;
in the step 3), the temperature of the hot air in the secondary drawing process is 220-230 ℃, and the air pressure of the hot air is 0.15-0.2 MPa.
Preferably, the outer surface of the roller of the hot rolling mill is uniformly provided with convex embossing;
the screen cloth is characterized in that screen holes are uniformly distributed on the surface of the screen cloth, and the height of each screen hole is larger than that of the embossing.
Preferably, in the step 1), the temperature of the spray head in the spraying process is 240-250 ℃;
the temperature rising temperature in the temperature rising process in the step 3) is 220-230 ℃.
The invention also provides the melt-blown fabric prepared by the preparation method.
According to the technical scheme, the method adopts the primary drawing and the secondary drawing operations of which the wind pressure is reduced in sequence, realizes the sequential drawing of the fibers in the production process of the melt-blown fabric, combines hot rolling in the two drawing processes, and adopts the indentation on the surface of the hot rolling mill to directly hot roll due to the fact that the diameter of the fibers is slightly larger than the diameter of the fibers formed in the later stage in the first hot rolling to form a primary depression mark; and performing electret treatment after secondary drawing after temperature returning to ensure that the surface of the fiber is uniformly charged, and performing hot rolling by matching a hot rolling mill with a screen to further form stable and uniform and complex concave traces, so that the fiber can effectively adsorb charged particles and stably ensure the filtering efficiency of the fiber.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an electret master batch which comprises polypropylene, silicon dioxide, electret powder, wax and an antioxidant, wherein the content of the polypropylene is 70-80 wt%, the content of the silicon dioxide is 5-15 wt%, and the content of the electret powder is 5-15 wt% based on the total weight of the electret master batch. The content of the wax is 5-15 wt%, and the content of the antioxidant is 0.1-0.5 wt%.
In a further preferred embodiment, in order to enable polypropylene to be molded more stably, enable electret powder to be uniformly dispersed in the polypropylene, improve the fineness and the homogeneity of overall particles and enable later-stage electrodes to be uniformly distributed, the polypropylene is modified by aramid compounds, glass fibers and nano zinc oxide.
The invention also provides a preparation method of the melt-blown fabric, which comprises the following steps:
1) mixing and melting the electret master batch, spraying out, and performing primary drafting to form fine fibers;
2) placing the fine fibers in a hot rolling mill for primary hot rolling;
3) after the fine fiber subjected to primary hot rolling is cooled, secondary drafting is carried out, and electret treatment is carried out to form superfine fiber;
4) arranging screens on two sides of the superfine fibers, placing the superfine fibers in a hot rolling mill for secondary hot rolling, cooling and rolling to obtain melt-blown fabric; wherein,
the wind pressure of the hot wind in the primary drafting process is smaller than that of the hot wind in the secondary drafting process.
The electret master batches are formed into a fiber state through primary drafting, the diameter of the electret master batches is smaller than that of fibers in the final melt-blown fabric through the adjustment of hot air pressure, and the electret master batches are hot-rolled after the operation, so that uniform and stable depressions are formed on the surfaces of the electret master batches, and charged particles are stably embedded on the basis of not damaging the integral structure of internal fibers; and on the basis, after temperature return, secondary drafting is carried out, so that the specific surface area of the fiber is further improved, meanwhile, due to one-step hot rolling forming, charged particles cannot further move and break away, and after the stability of the overall structure is ensured, electret treatment is carried out, so that a large number of electrodes are uniformly distributed. And the improvement of the filtering performance in the whole process mainly depends on the cooperative cooperation among a plurality of steps and does not depend on specific operating parameters in a certain step, so that each step only needs to realize the effect which can be conventionally achieved in the field, thereby ensuring the stability of the filtering effect of the finally obtained meltblown fabric.
In a preferred embodiment of the present invention, step 1) is modified polypropylene, and the preparation method of the modified polypropylene specifically comprises:
11) mixing and smelting a part of polypropylene and aramid compounds, extruding, granulating and cooling to obtain pretreated particles;
12) and melting the pretreated particles, adding the other part of polypropylene and glass fibers, continuously mixing at a high speed for 15-30min, adding nano zinc oxide, mixing, melting, extruding and granulating to obtain the modified polypropylene.
In a further preferred embodiment, the amount of polypropylene used in step 11) is 3: 6-8 relative to the amount of polypropylene used in step 12);
the dosage of the aromatic amide compound is 0.3-1% of the dosage of the polypropylene, the dosage of the glass fiber is 10-20% of the dosage of the polypropylene, and the dosage of the nano zinc oxide is 5-10% of the dosage of the polypropylene.
Of course, the aromatic amide compounds can adopt any type conventionally used in the field, and are not described in detail herein.
In a further preferred embodiment, in the step 1), the temperature of the hot air in the primary drawing process is 240-;
in the step 3), the temperature of the hot air in the secondary drawing process is 220-230 ℃, and the air pressure of the hot air is 0.15-0.2 MPa.
Of course, in order to ensure that the surface indentations after the primary hot rolling and the secondary hot rolling are uniformly distributed and have relatively consistent shapes, the outer surface of the roller of the hot rolling mill is uniformly distributed with convex embossing;
the screen cloth is characterized in that screen holes are uniformly distributed on the surface of the screen cloth, and the height of each screen hole is larger than that of the embossing.
In a further preferred embodiment, in the step 1), the temperature of the spray head in the spraying process is 240-;
the temperature rising temperature in the temperature rising process in the step 3) is 220-230 ℃.
The invention also provides the melt-blown fabric prepared by the preparation method.
Specifically, in actual production, the amount of the modified polypropylene is 76 parts by weight, the amount of the silicon dioxide is 10 parts by weight, the amount of the electret powder is 10 parts by weight, the amount of the wax is 10 parts by weight, and the amount of the antioxidant is 0.3 part by weight, and the detection shows that the meltblown fabric obtained by the proportioning scheme is:
the melt-blown fabric prepared by the method has the average filtering efficiency of 97.2 percent, and the lowest value of the filtering efficiency is not lower than 95.6 percent after a plurality of times of parallel test detection (operation environment, replacement of operators and the like), namely the filtering efficiency of the melt-blown fabric obtained by the method can meet the requirement of an N95 mask no matter in which environment, and can meet the requirement of N97 under the common condition, thereby ensuring that the use requirement of medical personnel can be met, and effectively overcoming the problem that the prior art can only meet the requirement of N93 generally.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. The electret master batch is characterized by comprising polypropylene, silicon dioxide, electret powder, wax and an antioxidant, wherein the content of the polypropylene is 70-80 wt%, the content of the silicon dioxide is 5-15 wt%, and the content of the electret powder is 5-15 wt% based on the total weight of the electret master batch. The content of the wax is 5-15 wt%, and the content of the antioxidant is 0.1-0.5 wt%.
2. The electret masterbatch of claim 1, wherein the polypropylene is modified with aramid compounds, glass fibers and nano zinc oxide.
3. A method of making meltblown fabric, the method comprising:
1) mixing and melting the electret masterbatch according to claim 1 or 2, spraying out, and performing primary drafting to form fine fibers;
2) placing the fine fibers in a hot rolling mill for primary hot rolling;
3) after the fine fiber subjected to primary hot rolling is cooled, secondary drafting is carried out, and electret treatment is carried out to form superfine fiber;
4) arranging screens on two sides of the superfine fibers, placing the superfine fibers in a hot rolling mill for secondary hot rolling, cooling and rolling to obtain melt-blown fabric; wherein,
the wind pressure of the hot wind in the primary drafting process is smaller than that of the hot wind in the secondary drafting process.
4. The method according to claim 3, wherein the modified polypropylene is obtained in step 1), and the method specifically comprises:
11) mixing and smelting a part of polypropylene and aramid compounds, extruding, granulating and cooling to obtain pretreated particles;
12) and melting the pretreated particles, adding the other part of polypropylene and glass fibers, continuously mixing at a high speed for 15-30min, adding nano zinc oxide, mixing, melting, extruding and granulating to obtain the modified polypropylene.
5. The method according to claim 4, wherein the ratio of the amount of the polypropylene used in step 11) to the amount of the polypropylene used in step 12) is 3: 6-8;
the dosage of the aromatic amide compound is 0.3-1% of the dosage of the polypropylene, the dosage of the glass fiber is 10-20% of the dosage of the polypropylene, and the dosage of the nano zinc oxide is 5-10% of the dosage of the polypropylene.
6. The preparation method according to claim 3 or 4, wherein in the step 1), the temperature of the hot air in the primary drawing process is 240-250 ℃, and the air pressure of the hot air is 0.08-0.12 MPa;
in the step 3), the temperature of the hot air in the secondary drawing process is 220-230 ℃, and the air pressure of the hot air is 0.15-0.2 MPa.
7. The manufacturing method according to claim 3 or 4, wherein the outer surface of the roll of the hot rolling mill is uniformly provided with raised embossments;
the screen cloth is characterized in that screen holes are uniformly distributed on the surface of the screen cloth, and the height of each screen hole is larger than that of the embossing.
8. The preparation method according to claim 3 or 4, wherein in the step 1), the temperature of the nozzle during the spraying process is 240 ℃ and 250 ℃;
the temperature rising temperature in the temperature rising process in the step 3) is 220-230 ℃.
9. A meltblown fabric produced by the process according to any of claims 3 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010411034.5A CN111574772A (en) | 2020-05-14 | 2020-05-14 | Electret master batch, melt-blown fabric and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010411034.5A CN111574772A (en) | 2020-05-14 | 2020-05-14 | Electret master batch, melt-blown fabric and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111574772A true CN111574772A (en) | 2020-08-25 |
Family
ID=72115447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010411034.5A Pending CN111574772A (en) | 2020-05-14 | 2020-05-14 | Electret master batch, melt-blown fabric and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111574772A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112694669A (en) * | 2020-12-25 | 2021-04-23 | 贵州凯科特材料有限公司 | Melt-blown material with long-term maintained filtering efficiency and preparation method thereof |
| CN112870850A (en) * | 2020-12-29 | 2021-06-01 | 广东金发科技有限公司 | Antibacterial melt-blown material and preparation method and application thereof |
| CN112941723A (en) * | 2021-01-26 | 2021-06-11 | 南京捷纳思新材料有限公司 | Preparation method of electret treated modified polypropylene melt-blown fabric |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718910A (en) * | 2005-07-18 | 2006-01-11 | 天津工业大学 | Modified polypropylene mother particle for melt spray, its preparation method and use |
| CN101476170A (en) * | 2008-12-29 | 2009-07-08 | 闫镇达 | Method and apparatus for producing high strength, high modulus polyethylene filament by melt drawing |
| CN101851794A (en) * | 2009-03-31 | 2010-10-06 | 中国水产科学研究院东海水产研究所 | Method for preparing modified polypropylene monofilaments for processing small-size fishing rope |
| CN102505348A (en) * | 2011-11-28 | 2012-06-20 | 浙江三象新材料科技有限公司 | Preparation method of ultra-soft spunbond meltblown spunbond (SMS) nonwoven fabric |
| CN204875075U (en) * | 2015-09-08 | 2015-12-16 | 山东泰鹏环保材料股份有限公司 | Manufacture of non -woven fabric system of multi -functional machine |
| CN107237048A (en) * | 2017-06-01 | 2017-10-10 | 山东荣泰新材料科技有限公司 | A kind of production method of the cloud cotton non-woven cloth of spun-bond process |
| CN110306293A (en) * | 2019-05-13 | 2019-10-08 | 山东寿光鲁清石化有限公司 | A kind of super soft non-woven fabrics and preparation process and the application in baby's diaper |
| CN110965203A (en) * | 2018-09-30 | 2020-04-07 | 俊富非织造材料有限公司 | Low-energy-consumption environment-friendly polypropylene spun-bonded non-woven fabric and preparation process thereof |
| CN210287612U (en) * | 2019-03-02 | 2020-04-10 | 江苏神鹤科技发展有限公司 | A dry draft machine for production of ultra high molecular weight polyethylene |
-
2020
- 2020-05-14 CN CN202010411034.5A patent/CN111574772A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718910A (en) * | 2005-07-18 | 2006-01-11 | 天津工业大学 | Modified polypropylene mother particle for melt spray, its preparation method and use |
| CN101476170A (en) * | 2008-12-29 | 2009-07-08 | 闫镇达 | Method and apparatus for producing high strength, high modulus polyethylene filament by melt drawing |
| CN101851794A (en) * | 2009-03-31 | 2010-10-06 | 中国水产科学研究院东海水产研究所 | Method for preparing modified polypropylene monofilaments for processing small-size fishing rope |
| CN102505348A (en) * | 2011-11-28 | 2012-06-20 | 浙江三象新材料科技有限公司 | Preparation method of ultra-soft spunbond meltblown spunbond (SMS) nonwoven fabric |
| CN204875075U (en) * | 2015-09-08 | 2015-12-16 | 山东泰鹏环保材料股份有限公司 | Manufacture of non -woven fabric system of multi -functional machine |
| CN107237048A (en) * | 2017-06-01 | 2017-10-10 | 山东荣泰新材料科技有限公司 | A kind of production method of the cloud cotton non-woven cloth of spun-bond process |
| CN110965203A (en) * | 2018-09-30 | 2020-04-07 | 俊富非织造材料有限公司 | Low-energy-consumption environment-friendly polypropylene spun-bonded non-woven fabric and preparation process thereof |
| CN210287612U (en) * | 2019-03-02 | 2020-04-10 | 江苏神鹤科技发展有限公司 | A dry draft machine for production of ultra high molecular weight polyethylene |
| CN110306293A (en) * | 2019-05-13 | 2019-10-08 | 山东寿光鲁清石化有限公司 | A kind of super soft non-woven fabrics and preparation process and the application in baby's diaper |
Non-Patent Citations (4)
| Title |
|---|
| 夏民强等: "聚丙烯用酰胺类成核剂研究进展", 《塑料》 * |
| 李少波: "对聚丙烯纺粘法非织造布生产技术的探讨", 《非织造布》 * |
| 王洪等: "牵伸和热处理对聚丙烯熔喷非织造材料结构和力学性能的影响", 《东华大学学报(自然科学版)》 * |
| 韩磊: "《静电探测机理与引用》", 30 June 2012, 国防工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112694669A (en) * | 2020-12-25 | 2021-04-23 | 贵州凯科特材料有限公司 | Melt-blown material with long-term maintained filtering efficiency and preparation method thereof |
| CN112694669B (en) * | 2020-12-25 | 2023-03-07 | 贵州凯科特材料有限公司 | Melt-blown material with long-term filtration efficiency and preparation method thereof |
| CN112870850A (en) * | 2020-12-29 | 2021-06-01 | 广东金发科技有限公司 | Antibacterial melt-blown material and preparation method and application thereof |
| CN112941723A (en) * | 2021-01-26 | 2021-06-11 | 南京捷纳思新材料有限公司 | Preparation method of electret treated modified polypropylene melt-blown fabric |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111574772A (en) | Electret master batch, melt-blown fabric and preparation method thereof | |
| CN112876853B (en) | Melt-blown material auxiliary agent and application thereof | |
| CN111172621B (en) | Polyester filament yarn containing wormwood extract and preparation method thereof | |
| CN112870850A (en) | Antibacterial melt-blown material and preparation method and application thereof | |
| CN111945295A (en) | Preparation method of efficient antibacterial meltblown fabric and prepared efficient antibacterial meltblown fabric | |
| CN111334931A (en) | Novel polypropylene melt-blown fabric formula and processing technology thereof | |
| CN111058104A (en) | Environmental temperature control method, control device, melt-blown nonwoven material production line and preparation system | |
| CN106894158A (en) | It is a kind of for diaper, protection pad, the soft non-woven fabrics of pro-skin cotton of diaper and preparation method thereof | |
| CN111602903A (en) | Preparation process method of high-polymer-material high-filterability non-woven mask | |
| CN113235223A (en) | Graphene modified melt-blown fabric and preparation method and application thereof | |
| CN112552592A (en) | Preparation process of antibacterial PP melt-spray material with fresh smell | |
| CN114108127A (en) | Degradable melt-blown filter material and preparation method and application thereof | |
| CN113969447A (en) | Preparation process of nylon floating-dark heterochromatic air-coated yarn | |
| CN113718423A (en) | Porous rare earth-doped antibacterial melt-blown material and preparation method thereof | |
| CN113969448B (en) | Preparation process of chinlon black-white de-screening air-coated yarn | |
| CN107715571A (en) | A kind of composite of antibacterial bacteriostatic, dust suction and Chalk-dust filtering and preparation method thereof | |
| CN105624825A (en) | Flame-retardant melt-blowing nonwoven material and preparation method thereof | |
| CN115216891A (en) | Antibacterial polypropylene melt-blown cloth material and preparation process thereof | |
| CN205022070U (en) | Spin compound nonwoven material of two ingredients of heat | |
| CN112708175B (en) | Composite functional master batch and preparation method and application thereof | |
| CN105109125B (en) | Spun-hot two component composite non-woven material as well as production method and application thereof | |
| CN111560711A (en) | Filter non-woven fabric and mask using same | |
| CN112941719A (en) | Hot air non-woven fabric special for electrostatic cotton mask and preparation method thereof | |
| CN113293518A (en) | Melt-blown fabric spinning method | |
| CN113005558A (en) | High-permeability mask with good antibacterial effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200825 |