CN111945293B - Preparation method of PVC melt-blown fabric - Google Patents
Preparation method of PVC melt-blown fabric Download PDFInfo
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- CN111945293B CN111945293B CN202010833447.2A CN202010833447A CN111945293B CN 111945293 B CN111945293 B CN 111945293B CN 202010833447 A CN202010833447 A CN 202010833447A CN 111945293 B CN111945293 B CN 111945293B
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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
- D04H1/542—Adhesive 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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
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- D—TEXTILES; PAPER
- 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
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- 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
- D01F6/48—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 polymers of halogenated hydrocarbons
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention discloses a PVC melt-blown fabric which comprises the following raw materials in parts by weight: PVC resin powder with the polymerization degree of 380-470: 100 parts, stabilizer: 3.5-4.5 parts of auxiliary stabilizer: 1.5-2.5 parts of plasticizer: 20-30 parts of epoxidized soybean oil: 4-6 parts of lanthanum oxide: 5-15 parts of a lubricant: 0.4-0.6 part. The invention prepares the melt-blown fabric material which meets the medical standard by selecting the specific raw material proportion and the process system, solves the bottleneck of melt-blown fabric production, and enlarges the raw material selection range of the melt-blown fabric.
Description
Technical Field
The invention belongs to the technical field of melt-blown fabric preparation, and particularly relates to a preparation method of PVC melt-blown fabric.
Background
The melt-blown fabric mainly uses polypropylene as a main raw material, and the diameter of the fiber can reach 1-5 microns. The superfine fiber with the unique capillary structure increases the number and the surface area of the fiber per unit area, so that the melt-blown fabric has good filtering property, shielding property, heat insulation property and oil absorption property. Can be used in the fields of air and liquid filtering materials, isolating materials, absorbing materials, mask materials, warm-keeping materials, oil absorbing materials, wiping cloth and the like.
With the increasing demand of the melt-blown fabric in the public health field, the melt-blown fabric is in a state of short supply and short demand, which is mainly due to that the raw material of the melt-blown fabric mainly depends on the polypropylene material. The raw material sources of the melt-blown fabric are expanded, so that the melt-blown fabric can be prepared into a melt-blown fabric product meeting the performance index requirements, and the technical problem which needs to be solved urgently by people is solved.
At present, the prior art for preparing the melt-blown fabric by adopting the PVC material is not disclosed, because the PVC has poor flowability, narrow processing temperature, easy decomposition at high temperature and other factors.
Disclosure of Invention
In view of the above problems in the prior art, the present invention is to provide a method for preparing a PVC meltblown fabric, so as to solve the above technical problems.
In order to achieve the above object, the present invention provides the following technical solutions:
the PVC melt-blown fabric comprises the following raw materials in parts by weight:
PVC resin powder with the polymerization degree of 380-470: 100 portions of
A stabilizer: 3.5 to 4.5 portions of
Auxiliary stabilizer: 1.5 to 2.5 portions
Plasticizer: 20-30 parts of
Epoxidized soybean oil: 4 to 6 portions of
Lanthanum oxide: 5-15 parts of
Lubricant: 0.4-0.6 part.
Preferably, the raw materials are in proportion as follows:
PVC resin powder with the polymerization degree of 380-470: 100 portions of
A stabilizer: 4 to 4.5 portions of
Auxiliary stabilizer: 2.0 to 2.5 portions
Plasticizer: 25-30 parts of
Epoxidized soybean oil: 5 portions of
Lanthanum oxide: 10 portions of
Lubricant: 0.5 part.
Preferably, the stabilizer is selected from one or more of an organic tin stabilizer, a calcium zinc stabilizer, a barium zinc stabilizer, a rare earth stabilizer and a rare earth composite stabilizer.
Preferably, the auxiliary stabilizer is one or more selected from beta-diketone, phosphite ester and polyhydric alcohol.
Preferably, the plasticizer is selected from one or more of DOTP, DOA and environment-friendly chlorinated paraffin.
Preferably, the lubricant is selected from one or more of G70S, KG70S and KG 16.
As another object of the invention, the invention also provides a preparation method of the PVC meltblown, which comprises the following steps:
(1) accurately weighing the raw materials according to a metering ratio, stirring and mixing the raw materials to 60 ℃;
(2) plasticizing the mixed raw materials by using a double-screw extruder on a Haake torque rheometer, wherein the rotation number of the extruder is 150 rpm, the temperature of a discharge end is 200 ℃, and ejecting the PVC melt from a melt-blowing die head; wherein the temperature of the die head is controlled to be 225-235 ℃, the temperature of the hot air is controlled to be 235-245 ℃, the web forming distance is 15cm, and the PVC melt-blown fiber cloth is prepared.
Compared with the prior art that polypropylene is mostly adopted to prepare the melt-blown fabric, the invention prepares the melt-blown fabric material which meets the medical standard by optimizing the formula and selecting the specific raw material proportion and the process system, solves the bottleneck of melt-blown fabric production and expands the raw material selection range of the melt-blown fabric. Through detection, in the melt-blown fabric prepared by the process, the PVC fibers with the diameter of 0-6 mu m account for 30-40 percent; the PVC fiber with the diameter of 0-10 μm accounts for 86-93 percent. The particle filtering efficiency of the PVC melt-blown fiber is tested, and the result shows that the particle filtering efficiency of 3.0 mu m is 85-95%.
Drawings
FIG. 1 is a schematic view of melt indexes of resins of different materials;
FIGS. 2(a) - (c) are schematic diagrams showing the distribution of PVC fiber diameters at different web forming distances in example 3;
FIGS. 3(a) - (d) are schematic diagrams of the distribution of PVC fiber diameters at the hot air temperatures of example 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. 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.
Example 1
The PVC melt-blown fabric comprises the following raw materials in parts by weight:
PVC resin powder with the polymerization degree of 380-470: 100 portions of
A stabilizer: 4.5 parts of
Auxiliary stabilizer: 2.5 parts of
Plasticizer: 30 portions of
Epoxidized soybean oil: 5.0 parts of
Lanthanum oxide: 10 portions of
Lubricant: 0.5 part.
The preparation process comprises the following steps: accurately weighing the raw materials according to a metering ratio, and stirring and mixing the raw materials; and heating the mixed raw materials into a melt, controlling the die head temperature to be 230 ℃, the hot air temperature to be 200 ℃ and the web forming distance to be 15cm, and preparing the melt-blown fiber cloth.
As shown in FIG. 1, the PVC resin powder with the polymerization degree of 380-470 is selected in the invention. FIG. 1 is a graph showing the comparison of flow rates of 4 PVC resin powders with different polymerization degrees and melt-blown PP1500, which are measured at different temperature sections by an extruder, flowing through a fixed circular hole every minute. The No. 1 line is the flow rate per minute of melt-blown PP1500, and the No. 2 line is the flow rate per minute of PVC resin powder with the polymerization degree of 380-470. From the linear relationship, the flow rates of the 2# line and the 1# line intersect at 260 ℃ (shown by the dotted line), so that the PVC resin powder with the polymerization degree of 380-470 is selected.
The particle filtration efficiency of the PVC melt-blown fiber of example 1 was tested and the particle filtration efficiency was 86-93% with a grammage of 50-80 per square meter and a particle size of 3.0 μm.
Example 2
The PVC melt-blown fabric comprises the following raw materials in parts by weight:
PVC resin powder with the polymerization degree of 380-470: 100 portions of
A stabilizer: 4 portions of
Auxiliary stabilizing agent: 2 portions of
Plasticizer: 25 portions of
Epoxidized soybean oil: 5 portions of
Lanthanum oxide: 10 portions of
Lubricant: 0.5 part.
In the present example, the die temperature was 200 ℃ to 260 ℃, 7 temperature sections were examined, and the ejected PVC fibers were collected under the same conditions as in example 1. The yellowness (b-value is positive) of the PVC fibers is compared using a colorimeter (CIE standard, Lab mode test) and the results are shown in Table 1
TABLE 1 die temperature vs. yellowness of PVC fibers
The test result shows that: the temperature of the die head is higher than 235 ℃, and the PVC fiber is obviously yellow. According to the experimental result, the melt-blowing temperature of 225-235 ℃ as the PVC melt-blown cloth is finally determined.
Example 3
In this example, the influence of the web forming distance on the preparation process of the PVC meltblown fabric is mainly examined, wherein three web forming distances of 5cm, 15cm and 20cm are selected, and the rest are the same as those in example 1. See fig. 2(a) - (c) for statistical results.
It can be seen that the average diameter of the PVC fibers tends to increase with increasing web formation distance. When the net forming distance is 15cm, the proportion of the PVC fibers with the diameter of less than 20 micrometers reaches 94%, and the proportion of the PVC fibers with the diameter of less than 20 micrometers at the net forming distances of 5cm and 20cm respectively accounts for 85% and 82%. Thus, a web forming distance of 15cm was chosen.
Example 4
In this example, the influence of hot air temperature on the preparation process of the PVC meltblown fabric was mainly examined, wherein four hot air temperatures of 215 ℃, 225 ℃, 235 ℃ and 245 ℃ were selected, and the rest were the same as in example 1. See fig. 3(a) - (d) for statistical results.
It can be seen from the figure that the average diameter of the PVC fibers tends to decrease as the temperature of the hot air increases. Increasing PVC fibers with the diameter of less than 10 mu m when the temperature of the hot air is 235 ℃; when the temperature of the hot air is increased to 245 ℃, the diameter of the PVC fiber is obviously reduced, and the PVC fiber accounts for about 95 percent below 20 mu m. Therefore, the hot air temperature was selected to be 235 ℃ and 245 ℃.
PP meltblown to PVC meltblown were compared from a 3.0 μm particulate filtration efficiency: the filtration efficiency of 3.0 mu m particles of PP melt-blown cloth is 90-95% under the condition of no electrostatic electret; and the filtering efficiency of 3.0 mu m particles of the PVC melt-blown cloth is 86-93% under the condition of no electrostatic electret, although the PVC melt-blown cloth has a difference with the PP melt-blown cloth, and the filtering effect equivalent to that of the PP melt-blown cloth can be achieved with the further adjustment of the processing technology.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (1)
1. The preparation method of the PVC meltblown is characterized in that the PVC meltblown comprises the following raw materials in parts by weight:
the stabilizer is selected from one or more of an organic tin stabilizer, a calcium zinc stabilizer, a barium zinc stabilizer, a rare earth stabilizer and a rare earth composite stabilizer;
the auxiliary stabilizer is selected from one or more of beta-diketone, phosphite ester and polyhydric alcohol;
the plasticizer is selected from one or more of DOTP, DOA and environment-friendly chlorinated paraffin;
the lubricant is selected from one or more of G70S, KG70S and KG 16;
the method comprises the following steps:
(1) accurately weighing the raw materials according to a metering ratio, stirring and mixing the raw materials to 60 ℃;
(2) plasticizing the mixed raw materials by using a double-screw extruder on a Haake torque rheometer, wherein the rotation number of the extruder is 150 rpm, the temperature of a discharge end is 200 ℃, and ejecting the PVC melt from a melt-blowing die head; wherein the temperature of the die head is controlled to be 225-235 ℃, the temperature of the hot air is controlled to be 235-245 ℃, the web forming distance is 15cm, and the PVC melt-blown fiber cloth is prepared.
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| CN202010833447.2A CN111945293B (en) | 2020-08-18 | 2020-08-18 | Preparation method of PVC melt-blown fabric |
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| CN202010833447.2A CN111945293B (en) | 2020-08-18 | 2020-08-18 | Preparation method of PVC melt-blown fabric |
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| CN111945293B true CN111945293B (en) | 2022-08-16 |
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| CN111303534A (en) * | 2020-04-09 | 2020-06-19 | 天津科创医药中间体技术生产力促进有限公司 | Special rare earth/polypropylene composite master batch for melt-blowing, melt-blown fabric and preparation method thereof |
| CN113512259B (en) * | 2021-04-21 | 2022-08-16 | 江苏金材科技有限公司 | Special material for PVC (polyvinyl chloride) antibacterial melt-blown fabric and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050096575A (en) * | 2004-03-31 | 2005-10-06 | 주식회사 모드테크 | A process for manufacturing functional pvc fine filament |
| CN104746237A (en) * | 2015-04-02 | 2015-07-01 | 天津工业大学 | Novel melt-blown non-woven cloth and preparation method thereof |
| CN106192217A (en) * | 2016-07-22 | 2016-12-07 | 丁少忠 | Plant base biodegradable non-woven fabrics and manufacture method thereof |
| CN108823815A (en) * | 2018-06-29 | 2018-11-16 | 南通志乐新材料有限公司 | A kind of low-resistance environmental protection filtering material |
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2020
- 2020-08-18 CN CN202010833447.2A patent/CN111945293B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050096575A (en) * | 2004-03-31 | 2005-10-06 | 주식회사 모드테크 | A process for manufacturing functional pvc fine filament |
| CN104746237A (en) * | 2015-04-02 | 2015-07-01 | 天津工业大学 | Novel melt-blown non-woven cloth and preparation method thereof |
| CN106192217A (en) * | 2016-07-22 | 2016-12-07 | 丁少忠 | Plant base biodegradable non-woven fabrics and manufacture method thereof |
| CN108823815A (en) * | 2018-06-29 | 2018-11-16 | 南通志乐新材料有限公司 | A kind of low-resistance environmental protection filtering material |
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