CN116285099A - Electrode master batch for melt-blown fabric and preparation method thereof - Google Patents
Electrode master batch for melt-blown fabric and preparation method thereof Download PDFInfo
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- CN116285099A CN116285099A CN202211681693.6A CN202211681693A CN116285099A CN 116285099 A CN116285099 A CN 116285099A CN 202211681693 A CN202211681693 A CN 202211681693A CN 116285099 A CN116285099 A CN 116285099A
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- 239000004744 fabric Substances 0.000 title claims abstract description 59
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 95
- 229920001661 Chitosan Polymers 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 38
- -1 polypropylene Polymers 0.000 claims abstract description 28
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 28
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 23
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 21
- 239000004743 Polypropylene Substances 0.000 claims abstract description 17
- 229920001155 polypropylene Polymers 0.000 claims abstract description 17
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004698 Polyethylene Substances 0.000 claims abstract description 11
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 11
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000008116 calcium stearate Substances 0.000 claims abstract description 11
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 11
- QOKYJGZIKILTCY-UHFFFAOYSA-J hydrogen phosphate;zirconium(4+) Chemical compound [Zr+4].OP([O-])([O-])=O.OP([O-])([O-])=O QOKYJGZIKILTCY-UHFFFAOYSA-J 0.000 claims abstract description 11
- 229920000573 polyethylene Polymers 0.000 claims abstract description 11
- 229910000166 zirconium phosphate Inorganic materials 0.000 claims abstract description 11
- 238000005469 granulation Methods 0.000 claims abstract description 10
- 230000003179 granulation Effects 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 238000002791 soaking Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims description 10
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 229940015043 glyoxal Drugs 0.000 claims description 10
- 235000002949 phytic acid Nutrition 0.000 claims description 10
- 229940068041 phytic acid Drugs 0.000 claims description 10
- 239000000467 phytic acid Substances 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 9
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 5
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 5
- 229960003237 betaine Drugs 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229940113115 polyethylene glycol 200 Drugs 0.000 claims description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 5
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 5
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 5
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 3
- 238000007909 melt granulation Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims 2
- 238000012545 processing Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 abstract description 7
- 230000008018 melting Effects 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 4
- 230000002045 lasting effect Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- 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
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- 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
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses an electrode master batch for melt-blown cloth and a preparation method thereof, belonging to the technical field of melt-blown cloth, wherein the electrode master batch comprises the following components in parts by weight: 100-110 parts of polypropylene, 15-20 parts of light calcium carbonate, 5-10 parts of nano silicon dioxide, 5-8 parts of modified chitosan, 3-6 parts of nano boron nitride, 0.8-1 part of calcium stearate, 0.1-0.15 part of antioxidant 1010, 1.3-1.6 parts of polyethylene wax, 1.5-2 parts of silane coupling agent KH560 and 0.1-0.12 part of zirconium hydrogen phosphate; the preparation method of the electrode master batch comprises high-speed mixing, melting granulation and post-treatment; the invention can delay charge dissipation of the melt-blown fabric, improve lasting filtering performance, reduce air resistance of the melt-blown fabric, improve air permeability and improve softness, breaking strength and breaking elongation of the melt-blown fabric.
Description
Technical Field
The invention relates to the technical field of melt-blown cloth, in particular to an electrode master batch for melt-blown cloth and a preparation method thereof.
Background
The melt-blown cloth is the core material of the mask, mainly takes polypropylene as the main raw material, has a fiber diameter of 1-5 mu m, has a plurality of gaps, a fluffy structure and good crease resistance, and has a unique capillary structure, and the superfine fiber can increase the number and the surface area of the fiber per unit area, so that the melt-blown cloth has good filterability, shielding property, heat insulation property and oil absorption property, and can be used in the fields of air, liquid filter materials, isolation materials, absorbing materials, mask materials, thermal insulation materials, oil absorption materials, wiping cloth and the like.
The electric electret is characterized in that charges are attached to the melt-blown cloth through high-voltage discharge, so that the filter material fibers are charged, and a large number of electrodes are formed among the charged fibers by combining the characteristic of compactness of the melt-blown superfine fiber materials.
However, the electric electret melt-blown cloth can cause charge dissipation after long-time storage, so that the filtering performance is affected, the air resistance of the electric electret melt-blown cloth is high, the air permeability is low, and in order to solve the problems, the most common method at present is to add inorganic nano particles into the electric electret master batch, but the addition of the inorganic nano particles can affect the softness, breaking strength and breaking elongation of the melt-blown cloth.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the electricity electret master batch for the melt-blown fabric and the preparation method thereof, which can delay charge dissipation of the melt-blown fabric, improve lasting filtering performance, reduce air resistance of the melt-blown fabric, improve air permeability and improve softness, breaking strength and breaking elongation of the melt-blown fabric.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the electric electret master batch for the melt-blown fabric comprises the following components in parts by weight: 100-110 parts of polypropylene, 15-20 parts of light calcium carbonate, 5-10 parts of nano silicon dioxide, 5-8 parts of modified chitosan, 3-6 parts of nano boron nitride, 0.8-1 part of calcium stearate, 0.1-0.15 part of antioxidant 1010, 1.3-1.6 parts of polyethylene wax, 1.5-2 parts of silane coupling agent KH560 and 0.1-0.12 part of zirconium hydrogen phosphate;
the melt index of the polypropylene resin is 1000-1200g/10min at 230 ℃ under the condition of 2.16 kg;
the particle size of the nano silicon dioxide is 60-80nm;
the particle size of the nano boron nitride is 120-150nm;
the preparation method of the modified chitosan comprises the following steps: adding a silane coupling agent KH550, nano-silica and deionized water into a reaction kettle, stirring at 70-75 ℃, cooling, filtering, and drying filter residues at 105-110 ℃ to obtain primary modified silica; adding primary modified silicon dioxide and absolute ethyl alcohol into a reaction kettle, controlling the temperature of the reaction kettle to 40-45 ℃, stirring, then dropwise adding glyoxal, controlling the dropwise adding speed to 8-10mL/min, continuously stirring for 2-2.5h after the dropwise adding is finished, cooling, filtering, and drying filter residues at 80-85 ℃ to obtain modified silicon dioxide; adding chitosan and acetone into a reaction kettle, controlling the temperature of the reaction kettle to 40-45 ℃, stirring for 20-25min, adding phytic acid, continuously stirring for 25-30min, then adding modified silicon dioxide, continuously stirring for 1-1.5h, cooling, filtering, and drying filter residues at 60-65 ℃ to obtain silicon dioxide modified chitosan;
in the preparation of the modified chitosan, the particle size of the nano silicon dioxide is 60-80nm;
in the preparation of the modified chitosan, the weight ratio of the silane coupling agent KH550, the nano-silica and the deionized water is 10-12:17-20:37-40;
in the preparation of the modified chitosan, the weight ratio of the primary modified silicon dioxide to the absolute ethyl alcohol to the glyoxal is 10:50-55:4-7;
in the preparation of the modified chitosan, the weight ratio of chitosan, acetone, phytic acid and modified silicon dioxide is 10-12:50-55:4-6:12-15.
The preparation process of electrode mother particle for smelting spray includes high speed mixing, smelting pelletizing and post treatment;
the high-speed mixing is carried out by adding polypropylene, light calcium carbonate, nano silicon dioxide, modified chitosan, nano boron nitride, calcium stearate, antioxidant 1010, polyethylene wax, silane coupling agent KH560 and zirconium hydrogen phosphate into a high-speed mixer, high-speed mixing is carried out, the rotating speed during high-speed mixing is controlled to be 1200-1500rpm, the time is 2-3min, and premix is obtained after the high-speed mixing is finished;
the melting granulation is carried out, premix is melted and extruded by a double-screw extruder, the length-diameter ratio of the double-screw extruder is controlled to be 40-42:1, the rotating speed of a host machine is 140-160Hz, and the extrusion temperatures of all the areas are respectively as follows: 180-185 ℃,185-190 ℃,195-205 ℃,205-210 ℃,210-215 ℃,205-215 ℃ and 195-200 ℃ and obtaining the primary electrode master batch after the melt extrusion granulation;
the post-treatment is carried out, primary electrode master batches are placed in post-treatment liquid for soaking, the soaking temperature is controlled to be 40-45 ℃, micro-current is introduced into the post-treatment liquid after soaking for 30-35min, the micro-current is carried out while soaking, the micro-current is controlled to be 6-8 mu A, after 1-1.2h, the micro-current treatment and soaking are stopped, filtrate is removed after filtration, and the master batches obtained through filtration are dried at 80-85 ℃ to obtain the electrode master batches;
in the post-treatment, the weight ratio of the primary electrode master batch to the post-treatment liquid is 1:1.8-2;
the post-treatment liquid comprises the following components in parts by weight: 3-5 parts of polyvinylpyrrolidone, 1-2 parts of sodium chloride, 0.5-0.8 part of sodium pyrophosphate, 0.5-0.7 part of betaine, 0.4-0.6 part of polyethylene glycol 200 and 100-105 parts of deionized water.
Compared with the prior art, the invention has the beneficial effects that:
(1) The electrode master batch for the melt-blown fabric can delay charge dissipation of the melt-blown fabric, so that the lasting filtering performance is improved, the initial filtering efficiency of the melt-blown fabric prepared by the electrode master batch is 95.6-96.5%, the filtering efficiency after the high-temperature high-humidity treatment for 120 hours at the temperature of 85 ℃ and the humidity of 85% is 94.1-94.5%, and the filtering efficiency after the high-temperature aging treatment for 12 hours at the temperature of 120 ℃ is 93.5-94.6%;
(2) The electrode master batch for the melt-blown fabric can reduce the air resistance of the melt-blown fabric, and the air resistance of the melt-blown fabric prepared from the electrode master batch is 47-52Pa;
(3) The electrode master batch for the melt-blown fabric can improve the air permeability of the melt-blown fabric, and the pressure difference of the melt-blown fabric prepared by the electrode master batch is 26.4-28.7Pa/cm 2 ；
(4) The electrode master batch for the melt-blown fabric can improve the softness of the melt-blown fabric, and the longitudinal softness of the melt-blown fabric prepared by the electrode master batch is 121-127mN, and the transverse softness is 133-138mN;
(5) The electrode master batch for the melt-blown fabric can improve the breaking strength and breaking elongation of the melt-blown fabric, the longitudinal breaking strength of the melt-blown fabric prepared by the electrode master batch is 47-51N, the transverse breaking strength is 52-55N, the longitudinal breaking elongation is 187-194%, and the transverse breaking elongation is 195-203%.
Detailed Description
Specific embodiments of the present invention will now be described in order to provide a clearer understanding of the technical features, objects and effects of the present invention.
Example 1
The electric electret master batch for the melt-blown fabric comprises the following components in parts by weight: 100 parts of polypropylene, 15 parts of light calcium carbonate, 5 parts of nano silicon dioxide, 5 parts of modified chitosan, 3 parts of nano boron nitride, 0.8 part of calcium stearate, 0.1 part of antioxidant 1010, 1.3 parts of polyethylene wax, 1.5 parts of silane coupling agent KH560 and 0.1 part of zirconium hydrogen phosphate;
the melt index of the polypropylene resin under the conditions of 230 ℃ and 2.16kg is 1000g/10min;
the particle size of the nano silicon dioxide is 60nm;
the grain diameter of the nanometer boron nitride is 120nm;
the preparation method of the modified chitosan comprises the following steps: adding a silane coupling agent KH550, nano-silica and deionized water into a reaction kettle, stirring at a stirring speed of 100rpm at 70 ℃ for 1h, cooling, filtering, and drying filter residues at 105 ℃ to obtain primary modified silica; adding primary modified silicon dioxide and absolute ethyl alcohol into a reaction kettle, controlling the temperature of the reaction kettle to 40 ℃, controlling the stirring speed to 120rpm, then dropwise adding glyoxal, controlling the dripping speed to 8mL/min, continuously stirring for 2 hours after the dripping is finished, cooling, filtering, and drying filter residues at 80 ℃ to obtain modified silicon dioxide; adding chitosan and acetone into a reaction kettle, controlling the temperature of the reaction kettle to 40 ℃, controlling the stirring speed to 120rpm, stirring for 20min, adding phytic acid, continuously stirring for 25min, then adding modified silicon dioxide, continuously stirring for 1h, cooling, filtering, and drying filter residues at 60 ℃ to obtain silicon dioxide modified chitosan;
the particle size of the nano silicon dioxide is 60nm;
wherein, the weight ratio of the silane coupling agent KH550, the nano silicon dioxide and the deionized water is 10:17:37;
wherein the weight ratio of the primary modified silicon dioxide to the absolute ethyl alcohol to the glyoxal is 10:50:4;
wherein the weight ratio of chitosan, acetone, phytic acid and modified silicon dioxide is 10:50:4:12.
The preparation method of the electrode master batch for the melt-blown fabric specifically comprises the following steps:
1. high speed mixing: adding the polypropylene, the light calcium carbonate, the nano silicon dioxide, the modified chitosan, the nano boron nitride, the calcium stearate, the antioxidant 1010, the polyethylene wax, the silane coupling agent KH560 and the zirconium hydrogen phosphate which are in a specified part into a high-speed mixer for high-speed mixing, controlling the rotating speed at 1200rpm during the high-speed mixing for 2min, and obtaining the premix after the high-speed mixing is finished;
2. and (3) melting and granulating: carrying out melt extrusion granulation on the premix by a double-screw extruder, controlling the length-diameter ratio of the double-screw extruder to be 40:1, and controlling the rotating speed of a host to be 140Hz, wherein the extrusion temperature of each zone is respectively as follows: 180 ℃,185 ℃,195 ℃,205 ℃,210 ℃,205 ℃,195 ℃ and the primary electrode master batch is obtained after the melt extrusion granulation;
3. post-treatment: placing primary electrode master batch into post-treatment liquid for soaking, controlling the soaking temperature to be 40 ℃, introducing micro-current into the post-treatment liquid after soaking for 30min, carrying out micro-current treatment while soaking, controlling the micro-current to be 6 mu A, stopping the micro-current treatment and soaking after 1h, removing filtrate after filtering, and drying the master batch obtained by filtering at 80 ℃ to obtain the electrode master batch;
wherein, the weight ratio of the primary electrode master batch to the post-treatment liquid is 1:1.8;
the post-treatment liquid comprises the following components in parts by weight: 3 parts of polyvinylpyrrolidone, 1 part of sodium chloride, 0.5 part of sodium pyrophosphate, 0.5 part of betaine, 0.4 part of polyethylene glycol 200 and 100 parts of deionized water.
Example 2
The electric electret master batch for the melt-blown fabric comprises the following components in parts by weight: 105 parts of polypropylene, 17 parts of light calcium carbonate, 8 parts of nano silicon dioxide, 6 parts of modified chitosan, 5 parts of nano boron nitride, 0.9 part of calcium stearate, 0.12 part of antioxidant 1010, 1.4 parts of polyethylene wax, 1.7 parts of silane coupling agent KH560 and 0.11 part of zirconium hydrogen phosphate;
the melt index of the polypropylene resin is 1100g/10min at 230 ℃ under the condition of 2.16 kg;
the particle size of the nano silicon dioxide is 70nm;
the grain diameter of the nanometer boron nitride is 140nm;
the preparation method of the modified chitosan comprises the following steps: adding a silane coupling agent KH550, nano-silica and deionized water into a reaction kettle, stirring at a stirring speed of 100-120rpm at 72 ℃ for 1.2 hours, cooling, filtering, and drying filter residues at 107 ℃ to obtain primary modified silica; adding primary modified silicon dioxide and absolute ethyl alcohol into a reaction kettle, controlling the temperature of the reaction kettle to 42 ℃, controlling the stirring speed to 140rpm, then dropwise adding glyoxal, controlling the dripping speed to 9mL/min, continuously stirring for 2.2h after the dripping is finished, cooling, filtering, and drying filter residues at 82 ℃ to obtain modified silicon dioxide; adding chitosan and acetone into a reaction kettle, controlling the temperature of the reaction kettle to 42 ℃, controlling the stirring speed to 140rpm, stirring for 22min, adding phytic acid, continuously stirring for 28min, then adding modified silicon dioxide, continuously stirring for 1.2h, cooling, filtering, and drying filter residues at 62 ℃ to obtain silicon dioxide modified chitosan;
the particle size of the nano silicon dioxide is 70nm;
wherein, the weight ratio of the silane coupling agent KH550, the nano silicon dioxide and the deionized water is 11:18:38;
wherein the weight ratio of the primary modified silicon dioxide to the absolute ethyl alcohol to the glyoxal is 10:52:5;
wherein the weight ratio of chitosan, acetone, phytic acid and modified silicon dioxide is 11:52:5:14.
The preparation method of the electrode master batch for the melt-blown fabric specifically comprises the following steps:
1. high speed mixing: adding the polypropylene, the light calcium carbonate, the nano silicon dioxide, the modified chitosan, the nano boron nitride, the calcium stearate, the antioxidant 1010, the polyethylene wax, the silane coupling agent KH560 and the zirconium hydrogen phosphate which are in a specified part into a high-speed mixer for high-speed mixing, controlling the rotating speed at 1400rpm during the high-speed mixing for 2.5min, and obtaining the premix after the high-speed mixing is finished;
2. and (3) melting and granulating: carrying out melt extrusion granulation on the premix by a double-screw extruder, controlling the length-diameter ratio of the double-screw extruder to be 41:1, and controlling the rotating speed of a host to be 150Hz, wherein the extrusion temperature of each zone is respectively as follows: 182 ℃,188 ℃,200 ℃,208 ℃,212 ℃,210 ℃,198 ℃ and the primary electrode master batch is obtained after the melt extrusion granulation;
3. post-treatment: placing primary electrode master batch into post-treatment liquid for soaking, controlling the soaking temperature to be 42 ℃, introducing micro-current into the post-treatment liquid after soaking for 32min, carrying out micro-current treatment while soaking, controlling the micro-current to be 7 mu A, stopping the micro-current treatment and soaking after 1.1h, removing filtrate after filtering, and drying the master batch obtained by filtering at 82 ℃ to obtain the electrode master batch;
wherein, the weight ratio of the primary electrode master batch to the post-treatment liquid is 1:1.9;
the post-treatment liquid comprises the following components in parts by weight: 4 parts of polyvinylpyrrolidone, 1.5 parts of sodium chloride, 0.7 part of sodium pyrophosphate, 0.6 part of betaine, 0.5 part of polyethylene glycol 200 and 102 parts of deionized water.
Example 3
The electric electret master batch for the melt-blown fabric comprises the following components in parts by weight: 110 parts of polypropylene, 20 parts of light calcium carbonate, 10 parts of nano silicon dioxide, 8 parts of modified chitosan, 6 parts of nano boron nitride, 1 part of calcium stearate, 0.15 part of antioxidant 1010, 1.6 parts of polyethylene wax, 2 parts of silane coupling agent KH560 and 0.12 part of zirconium hydrogen phosphate;
the melt index of the polypropylene resin is 1200g/10min at 230 ℃ under the condition of 2.16 kg;
the particle size of the nano silicon dioxide is 80nm;
the particle size of the nano boron nitride is 150nm;
the preparation method of the modified chitosan comprises the following steps: adding a silane coupling agent KH550, nano-silica and deionized water into a reaction kettle, stirring at a stirring speed of 120rpm at 75 ℃ for 1.5 hours, cooling, filtering, and drying filter residues at 110 ℃ to obtain primary modified silica; adding primary modified silicon dioxide and absolute ethyl alcohol into a reaction kettle, controlling the temperature of the reaction kettle to 45 ℃, controlling the stirring speed to 150rpm, then dropwise adding glyoxal, controlling the dripping speed to be 10mL/min, continuously stirring for 2.5h after the dripping is finished, cooling, filtering, and drying filter residues at 85 ℃ to obtain modified silicon dioxide; adding chitosan and acetone into a reaction kettle, controlling the temperature of the reaction kettle to 45 ℃, controlling the stirring speed to 150rpm, stirring for 25min, adding phytic acid, continuously stirring for 30min, then adding modified silicon dioxide, continuously stirring for 1.5h, cooling, filtering, and drying filter residues at 65 ℃ to obtain silicon dioxide modified chitosan;
the particle size of the nano silicon dioxide is 80nm;
wherein, the weight ratio of the silane coupling agent KH550, the nano silicon dioxide and the deionized water is 12:20:40;
wherein the weight ratio of the primary modified silicon dioxide to the absolute ethyl alcohol to the glyoxal is 10:55:7;
wherein the weight ratio of chitosan, acetone, phytic acid and modified silicon dioxide is 12:55:6:15.
The preparation method of the electrode master batch for the melt-blown fabric specifically comprises the following steps:
1. high speed mixing: adding the polypropylene, the light calcium carbonate, the nano silicon dioxide, the modified chitosan, the nano boron nitride, the calcium stearate, the antioxidant 1010, the polyethylene wax, the silane coupling agent KH560 and the zirconium hydrogen phosphate which are in a specified part into a high-speed mixer for high-speed mixing, controlling the rotating speed at 1500rpm during the high-speed mixing for 3min, and obtaining the premix after the high-speed mixing is finished;
2. and (3) melting and granulating: carrying out melt extrusion granulation on the premix by a double-screw extruder, controlling the length-diameter ratio of the double-screw extruder to be 42:1, controlling the rotating speed of a host to be 160Hz, and respectively controlling the extrusion temperature of each zone to be: 185 ℃,190 ℃,205 ℃,210 ℃,215 ℃,215 ℃,200 ℃ and obtaining primary electrode master batch after melt extrusion granulation;
3. post-treatment: placing primary electrode master batch into post-treatment liquid for soaking, controlling the soaking temperature to be 45 ℃, introducing micro-current into the post-treatment liquid after soaking for 35min, carrying out micro-current treatment while soaking, controlling the micro-current to be 8 mu A, stopping the micro-current treatment and soaking after 1.2h, removing filtrate after filtering, and drying the master batch obtained by filtering at 85 ℃ to obtain the electrode master batch;
wherein, the weight ratio of the primary electrode master batch to the post-treatment liquid is 1:2;
the post-treatment liquid comprises the following components in parts by weight: 5 parts of polyvinylpyrrolidone, 2 parts of sodium chloride, 0.8 part of sodium pyrophosphate, 0.7 part of betaine, 0.6 part of polyethylene glycol 200 and 105 parts of deionized water.
Comparative example 1
The electrode master batch for melt-blown fabric and the preparation method thereof are adopted in the embodiment 1, and the difference is that: the modified chitosan is replaced by chitosan in the composition of the electrode master batch for melt-blown cloth.
Comparative example 2
The electrode master batch for melt-blown fabric and the preparation method thereof are adopted in the embodiment 1, and the difference is that: in the preparation method of the electrode master batch for the melt-blown cloth, the post-treatment of the step 3 is omitted, namely the electrode master batch is obtained after the step 2 of melt granulation.
Test example 1
Melting, spinning, drafting and screening the electrode master batches prepared in the examples 1-3 and the comparative examples 1-2 respectively, and then respectively carrying out corona discharge electrode treatment, wherein the electrode voltage is controlled to be 80kV, the electrode distance is 6cm, and the corona discharge electrode treatment is finished to obtain the electrode melt-blown cloth; each electret meltblown was divided into 3 samples for the following tests:
testing the filtration efficiency of the 1 st electrode melt-blown sample as the initial filtration efficiency; the 2 nd electrode melt-blown sample is placed in an environment with the temperature of 85 ℃ and the humidity of 85% for high-temperature high-humidity treatment, the treatment time is 120 hours, and then the filtration efficiency is tested after the 2 nd electrode melt-blown sample is naturally restored to the room temperature and is used as the filtration efficiency after the high-temperature high-humidity treatment; and (3) placing the 3 rd electrode melt-blown fabric sample at 120 ℃ for high-temperature aging treatment for 12 hours, and then naturally recovering the 3 rd electrode melt-blown fabric sample to room temperature, and testing the filtration efficiency as the filtration efficiency after the high-temperature aging treatment. The detection results are as follows:
test example 2
Melting, spinning, drafting and screening the electrode master batches prepared in the examples 1-3 and the comparative examples 1-2 respectively, and then respectively carrying out corona discharge electrode treatment, wherein the electrode voltage is controlled to be 30kV, the electrode distance is 6cm, and the corona discharge electrode treatment is finished to obtain the electrode melt-blown cloth; the air resistance, pressure difference, softness, breaking strength and breaking elongation of the electret melt-blown cloth were tested separately, and the test results were as follows:
the percentages used in the present invention are mass percentages unless otherwise indicated.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The electric electret master batch for the melt-blown fabric is characterized by comprising the following components in parts by weight: 100-110 parts of polypropylene, 15-20 parts of light calcium carbonate, 5-10 parts of nano silicon dioxide, 5-8 parts of modified chitosan, 3-6 parts of nano boron nitride, 0.8-1 part of calcium stearate, 0.1-0.15 part of antioxidant 1010, 1.3-1.6 parts of polyethylene wax, 1.5-2 parts of silane coupling agent KH560 and 0.1-0.12 part of zirconium hydrogen phosphate.
2. The electrode master batch for meltblown fabrics according to claim 1, wherein the polypropylene resin has a melt index of 1000-1200g/10min at 230 ℃ under 2.16kg conditions;
the particle size of the nano silicon dioxide is 60-80nm;
the grain diameter of the nanometer boron nitride is 120-150nm.
3. The electrode master batch for melt-blown fabric according to claim 1, wherein the preparation method of the modified chitosan is as follows: adding a silane coupling agent KH550, nano-silica and deionized water into a reaction kettle, stirring at 70-75 ℃, cooling, filtering, and drying filter residues at 105-110 ℃ to obtain primary modified silica; adding primary modified silicon dioxide and absolute ethyl alcohol into a reaction kettle, controlling the temperature of the reaction kettle to 40-45 ℃, stirring, then dropwise adding glyoxal, controlling the dropwise adding speed to 8-10mL/min, continuously stirring for 2-2.5h after the dropwise adding is finished, cooling, filtering, and drying filter residues at 80-85 ℃ to obtain modified silicon dioxide; adding chitosan and acetone into a reaction kettle, controlling the temperature of the reaction kettle to 40-45 ℃, stirring for 20-25min, adding phytic acid, continuously stirring for 25-30min, then adding modified silicon dioxide, continuously stirring for 1-1.5h, cooling, filtering, and drying filter residues at 60-65 ℃ to obtain the silicon dioxide modified chitosan.
4. The electrode master batch for meltblown fabrics according to claim 3, wherein in the preparation of the modified chitosan, the nano silica has a particle size of 60-80nm;
in the preparation of the modified chitosan, the weight ratio of the silane coupling agent KH550, the nano-silica and the deionized water is 10-12:17-20:37-40;
in the preparation of the modified chitosan, the weight ratio of the primary modified silicon dioxide to the absolute ethyl alcohol to the glyoxal is 10:50-55:4-7;
in the preparation of the modified chitosan, the weight ratio of chitosan, acetone, phytic acid and modified silicon dioxide is 10-12:50-55:4-6:12-15.
5. A method for preparing the electrode master batch for melt-blown fabric according to claim 1, which is characterized by comprising high-speed mixing, melt granulation and post-treatment;
the post-treatment is carried out, primary electrode master batches are placed in post-treatment liquid for soaking, the soaking temperature is controlled to be 40-45 ℃, micro-current is introduced into the post-treatment liquid after soaking for 30-35min, the micro-current treatment is carried out while soaking, the micro-current is controlled to be 6-8 mu A, after 1-1.2h, the micro-current treatment and soaking are stopped, filtrate is removed after filtration, and the master batches obtained after filtration are dried at 80-85 ℃ to obtain the electrode master batches.
6. The method for preparing the electrode master batch for the melt-blown fabric according to claim 5, wherein the high-speed mixing is carried out by adding the prescribed parts of polypropylene, light calcium carbonate, nano silicon dioxide, modified chitosan, nano boron nitride, calcium stearate, antioxidant 1010, polyethylene wax, silane coupling agent KH560 and zirconium hydrogen phosphate into a high-speed mixer for high-speed mixing, controlling the rotating speed at 1200-1500rpm for 2-3min, and obtaining the premix after the high-speed mixing is finished.
7. The method for preparing the electrode master batch for melt-blown fabric according to claim 5, wherein the melt granulation is carried out on the premix by a double-screw extruder, the length-diameter ratio of the double-screw extruder is controlled to be 40-42:1, the rotating speed of a host machine is 140-160Hz, and the extrusion temperatures of all the areas are respectively: 180-185 ℃,185-190 ℃,195-205 ℃,205-210 ℃,210-215 ℃,205-215 ℃,195-200 ℃ and obtaining the primary electrode master batch after the melt extrusion granulation.
8. The method for producing an electric electret master batch for meltblown processing according to claim 5, wherein the weight ratio of the primary electric electret master batch to the post-processing liquid in the post-processing is 1:1.8-2.
9. The method for preparing an electrode master batch for meltblown fabrics according to claim 5, wherein the post-treatment liquid comprises, in parts by weight: 3-5 parts of polyvinylpyrrolidone, 1-2 parts of sodium chloride, 0.5-0.8 part of sodium pyrophosphate, 0.5-0.7 part of betaine, 0.4-0.6 part of polyethylene glycol 200 and 100-105 parts of deionized water.
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