CN114163726A - Electret masterbatch for melt-blown non-woven fabric and preparation method thereof - Google Patents
Electret masterbatch for melt-blown non-woven fabric and preparation method thereof Download PDFInfo
- Publication number
- CN114163726A CN114163726A CN202111546485.0A CN202111546485A CN114163726A CN 114163726 A CN114163726 A CN 114163726A CN 202111546485 A CN202111546485 A CN 202111546485A CN 114163726 A CN114163726 A CN 114163726A
- Authority
- CN
- China
- Prior art keywords
- melt
- electret
- blown non
- woven fabric
- magnesium stearate
- 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
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 37
- 239000004744 fabric Substances 0.000 title claims abstract description 36
- 239000004750 melt-blown nonwoven Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title description 3
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims abstract description 52
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 30
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 26
- 235000019359 magnesium stearate Nutrition 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000004743 Polypropylene Substances 0.000 claims abstract description 15
- -1 polypropylene Polymers 0.000 claims abstract description 15
- 229920001155 polypropylene Polymers 0.000 claims abstract description 15
- 239000004611 light stabiliser Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 41
- 238000003756 stirring Methods 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- XYXJKPCGSGVSBO-UHFFFAOYSA-N 1,3,5-tris[(4-tert-butyl-3-hydroxy-2,6-dimethylphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C)=C1CN1C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C1=O XYXJKPCGSGVSBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical group CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 abstract description 5
- 239000003570 air Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 239000012257 stirred material Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 238000004887 air purification Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 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 description 1
- BEIOEBMXPVYLRY-UHFFFAOYSA-N [4-[4-bis(2,4-ditert-butylphenoxy)phosphanylphenyl]phenyl]-bis(2,4-ditert-butylphenoxy)phosphane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(C=1C=CC(=CC=1)C=1C=CC(=CC=1)P(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C BEIOEBMXPVYLRY-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 210000003123 bronchiole Anatomy 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 210000003456 pulmonary alveoli Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 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
- 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
-
- 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
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Artificial Filaments (AREA)
- Filtering Materials (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses an electret master batch for melt-blown non-woven fabric, which comprises the following raw materials in percentage by weight: 54.772-66.857% of metallocene polypropylene, 30-40% of magnesium stearate, 3-5% of fumed silica, 0.003-0.008% of main antioxidant, 0.06-0.1% of auxiliary antioxidant and 0.08-0.12% of light stabilizer. According to the invention, magnesium stearate and fumed silica are mixed on the basis of the prior art, the combination of the magnesium stearate and the fumed silica can achieve a very excellent electret coordination effect, the fumed silica can exert better dispersibility due to the addition of the magnesium stearate, the addition amount of the fumed silica is reduced, and the electret master batch can be used for reducing the resistance of melt-blown non-woven fabrics and improving the filtration efficiency of the melt-blown non-woven fabrics under the conditions of the same fiber fineness and gram weight.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to electret master batches for melt-blown non-woven fabrics and a preparation method thereof.
Background
With the progress of human society and the development of industrialization, a large amount of particles, bacteria and viruses float in the ambient air gathered by people, and the harmful substances can be suspended in the air for a long time and are transported for a long distance, so that the influence on the human health and the quality of the atmospheric environment is great. Studies have shown that the smaller the particle diameter, the deeper the site of entry into the respiratory tract, with particles of 10 microns diameter generally deposited in the upper respiratory tract and particles below 2 microns penetrating into the bronchioles and alveoli. After entering pulmonary alveoli, the fine particles directly affect the ventilation function of the lung, so that the organism is easy to be in an anoxic state, and cardiovascular diseases, respiratory diseases and lung cancer can be caused. Bacteria and viruses can directly cause serious diseases of human bodies. Therefore, in the field of air purification and medical protection, there is an increasing emphasis on developing a filter material that can adsorb and isolate these particulate matter, bacteria and viruses.
In the current filter material, the effect is remarkable in that electrets are added into the filter material such as non-woven fabrics so as to maintain the long-term adsorption effect. An electret is a dielectric material that exhibits permanent electrical polarization, similar to a magnetically permanent magnet, but which can store a single charge and either permanently retain the charge or be in an electrically polarized state. Natural electret materials include carnauba wax, rosin, and the like. Since the 50 s, with the development of polymer materials, polymer electrets, particularly fluorine-containing materials, were found to have excellent charge storage capabilities, thereby extending the field of application of electrets. At present, the polymer material capable of adsorbing the particles after polarization becomes a research hotspot, and is particularly widely applied to the air purification and medical health industries, such as melt-blown polypropylene fiber filter materials used as air conditioner filter screens, medical protective masks, dust masks and the like.
Polypropylene is one of organic electret materials, the distribution of space charge is mainly concentrated on two ends of crystal grains and the interface of a crystallization area and an amorphous area, but due to the characteristics of a melt-blown process, the crystallinity of common polypropylene melt-blown fibers is not high, the crystal grains are large, and the storage of the space charge is influenced. At present, the technical scheme of improving the charge storage capacity of polypropylene by adding an auxiliary agent is available, but the compatibility of the auxiliary agent and a polypropylene matrix is poor, and the problems of short charge storage period, poor stability and the like exist.
Therefore, the electret master batch with long charge electret service life, high efficiency and high filtering efficiency and the preparation method thereof are problems to be solved by technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides an electret master batch for melt-blown non-woven fabric and a preparation method thereof, wherein magnesium stearate and fumed silica are mixed on the basis of the prior art, the combination of the magnesium stearate and the fumed silica can achieve a very excellent electret coordination effect, the fumed silica can better exert dispersibility by adding the magnesium stearate, and the addition amount of the fumed silica is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electret master batch for melt-blown non-woven fabric comprises the following raw materials: metallocene polypropylene, fumed silica, magnesium stearate, a primary antioxidant, a secondary antioxidant and a light stabilizer.
Preferably, the electret master batch for the melt-blown non-woven fabric comprises the following raw materials in percentage by weight: 54.772-66.857% of metallocene polypropylene, 30-40% of magnesium stearate, 3-5% of fumed silica, 0.003-0.008% of main antioxidant, 0.06-0.1% of auxiliary antioxidant and 0.08-0.12% of light stabilizer.
Adopt above-mentioned preferred scheme's beneficial effect to lie in: according to the invention, magnesium stearate and fumed silica are mixed on the basis of the prior art, the combination of the magnesium stearate and the fumed silica can achieve a very excellent electret coordination effect, the fumed silica can exert better dispersibility due to the addition of the magnesium stearate, the addition amount of the fumed silica is reduced, and the electret master batch can be used for reducing the resistance of melt-blown non-woven fabrics and improving the filtration efficiency of the melt-blown non-woven fabrics under the conditions of the same fiber fineness and gram weight.
Further, the magnesium stearate is 325 mesh SW grade magnesium stearate of italian hair base chemistry.
Further, the fumed silica is degussa 380.
The beneficial effect of adopting the further scheme is that: the magnesium stearate and the fumed silica adopted by the invention have very strong electret synergistic effect, and have the functions of a dispersing agent and a lubricating agent, so that the fumed silica can be effectively dispersed in a resin matrix, the extrusion granulation is smoother, and the energy consumption is lower.
Further, the primary antioxidant is primary antioxidant 1790, primary antioxidant 1010 or primary antioxidant 3114, and the auxiliary antioxidant is auxiliary antioxidant 168, auxiliary antioxidant 9228 or auxiliary antioxidant PEPQ.
Preferably, the primary antioxidant is primary antioxidant 1790, and the secondary antioxidant is secondary antioxidant 168.
The beneficial effect of adopting the further scheme is that: the antioxidant defined by the invention has higher cost performance, excellent anti-gas fading performance and lower cost
Further, the light stabilizer is a light stabilizer UV40 or UV70, preferably UV 70.
The invention also provides a preparation method of the electret master batch for melt-blown non-woven fabric, which comprises the following steps:
(4) weighing the raw materials according to the weight percentage for later use;
(5) uniformly mixing all the raw materials, stirring for 8-15min, introducing into an extruder, extruding, and granulating to obtain particles;
(6) and screening, drying and blowing the obtained particles to obtain the electret master batch for the melt-blown non-woven fabric.
Further, the stirring speed in step (2) is 600-1200 rpm.
Further, the extruder in the step (2) adopts a double-screw extruder;
the barrel temperature of the twin-screw extruder is 120, 150, 180, 200, 210, 220, 200, 180, 160, 150, 160 and 160 ℃, the rotating speed is 120-300rpm, and the die head temperature is 165-180 ℃.
The beneficial effect of adopting the further scheme is that: the synergistic effect of UV70 and primary antioxidant 1790 is better, and the cost is lower than that of UV 40.
Further, the temperature of the water for pelletizing in the step (2) is 32-45 ℃, and the speed is 300-600 rpm.
The beneficial effect of adopting the further scheme is that: the limiting scheme can ensure that the brace is smoother, avoids broken brace and has higher yield
Compared with the prior art, the invention has the following beneficial effects:
1. compared with other products, the master batch of the invention reduces the resistance of the melt-blown non-woven fabric under the condition of the same fiber fineness and gram weight, and simultaneously improves the filtration efficiency of the melt-blown non-woven fabric;
2. the master batch has long charge electret service life (more than 6 months) and high electret efficiency (32L flow, filter efficiency more than 99.5 percent, 85L flow, filter efficiency more than 97 percent);
3. the master batch has high oily particle filtering efficiency (95L flow, DOP filtering efficiency is more than 93%);
4. the master batch does not influence the normal cleaning period and the service life of the spinneret plate;
5. the master batch of the invention is used without greatly adjusting the prior melt-blown non-woven fabric production process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
In the examples of the invention, the magnesium stearate is 325-mesh SW-grade magnesium stearate of Italian hair-base chemistry; the fumed silicas are both degussa a 380.
Example 1
A preparation method of electret master batch for melt-blown non-woven fabric specifically comprises the following steps:
(1) weighing the following raw materials in percentage by weight: 54.772% of metallocene polypropylene, 5% of fumed silica, 40% of magnesium stearate, 0.008% of main antioxidant, 0.1% of auxiliary antioxidant and 0.12% of light stabilizer for later use;
(2) putting the raw materials into a high-speed stirrer, stirring for 15min at the speed of 600 revolutions per minute, introducing the stirred materials into a low-speed stirrer, continuously stirring at the speed of 100 revolutions per minute, introducing into a mixing barrel of a double-screw extruder, and carrying out technical and particle cutting to obtain particles; wherein the barrel temperature of the twin-screw extruder is 120, 150, 180, 200, 210, 220, 200, 180, 160, 150, 160 and 160 ℃, the rotating speed is 120rpm, and the die head temperature is 180 ℃;
(3) vibrating the particles to remove particles with unqualified particle size, then sending the particles to a finished product bin by an air blower, drying and blowing to obtain the electret master batch for melt-blown non-woven fabric.
Example 2
A preparation method of electret master batch for melt-blown non-woven fabric specifically comprises the following steps:
(1) weighing the following raw materials in percentage by weight: 66.857% of metallocene polypropylene, 3% of fumed silica, 30% of magnesium stearate, 17900.003% of main antioxidant, 1680.06% of auxiliary antioxidant and 700.08% of light stabilizer UV for later use;
(2) putting the raw materials into a high-speed stirrer, stirring for 8min at the speed of 1200rpm, introducing the stirred materials into a low-speed stirrer, continuously stirring at the speed of 100 rpm, introducing into a mixing barrel of a double-screw extruder, and carrying out technical and particle cutting to obtain particles; wherein the barrel temperature of the twin-screw extruder is 120, 150, 180, 200, 210, 220, 200, 180, 160, 150, 160 and 160 ℃, the rotating speed is 300rpm, and the die head temperature is 165 ℃;
(3) vibrating the particles to remove particles with unqualified particle size, then sending the particles to a finished product bin by an air blower, drying and blowing to obtain the electret master batch for melt-blown non-woven fabric.
Example 3
A preparation method of electret master batch for melt-blown non-woven fabric specifically comprises the following steps:
(1) weighing the following raw materials in percentage by weight: 59.815% of metallocene polypropylene, 4% of fumed silica, 36% of magnesium stearate, 17900.005% of main antioxidant, 1680.08% of auxiliary antioxidant and 700.1% of light stabilizer UV for later use;
(2) putting the raw materials into a high-speed stirrer, stirring for 8min at the speed of 1000 revolutions per minute, introducing the stirred materials into a low-speed stirrer, continuously stirring at the speed of 100 revolutions per minute, introducing into a mixing barrel of a double-screw extruder, and carrying out technical and particle cutting to obtain particles; wherein the barrel temperature of the twin-screw extruder is 120, 150, 180, 200, 210, 220, 200, 180, 160, 150, 160 and 160 ℃, the rotating speed is 200rpm, and the die head temperature is 170 ℃;
(3) vibrating the particles to remove particles with unqualified particle size, then sending the particles to a finished product bin by an air blower, drying and blowing to obtain the electret master batch for melt-blown non-woven fabric.
Example 4
A preparation method of electret master batch for melt-blown non-woven fabric specifically comprises the following steps:
(1) weighing the following raw materials in percentage by weight: 94.815% of metallocene polypropylene, 5% of fumed silica, 17900.005% of main antioxidant, 1680.08% of auxiliary antioxidant and 700.1% of light stabilizer UV for later use;
(2) putting the raw materials into a high-speed stirrer, stirring for 8min at the speed of 1000 revolutions per minute, introducing the stirred materials into a low-speed stirrer, continuously stirring at the speed of 100 revolutions per minute, introducing into a mixing barrel of a double-screw extruder, and carrying out technical and particle cutting to obtain particles; wherein the barrel temperature of the twin-screw extruder is 120, 160, 200, 220, 225, 230, 225, 200, 180, 160, 150, 160 and 160 ℃, the rotating speed is 200rpm, and the die head temperature is 170 ℃;
(3) vibrating the particles to remove particles with unqualified particle size, then sending the particles to a finished product bin by an air blower, drying and blowing to obtain the electret master batch for melt-blown non-woven fabric.
Example 5
A preparation method of electret master batch for melt-blown non-woven fabric specifically comprises the following steps:
(1) weighing the following raw materials in percentage by weight: 59.815% of metallocene polypropylene, 40% of magnesium stearate, 17900.005% of main antioxidant, 1680.08% of auxiliary antioxidant and 700.1% of light stabilizer UV for later use;
(2) putting the raw materials into a high-speed stirrer, stirring for 8min at the speed of 1000 revolutions per minute, introducing the stirred materials into a low-speed stirrer, continuously stirring at the speed of 100 revolutions per minute, introducing into a mixing barrel of a double-screw extruder, and carrying out technical and particle cutting to obtain particles; wherein the barrel temperature of the twin-screw extruder is 120, 150, 180, 200, 210, 220, 200, 180, 160, 150, 160 and 160 ℃, the rotating speed is 200rpm, and the die head temperature is 170 ℃;
(3) vibrating the particles to remove particles with unqualified particle size, then sending the particles to a finished product bin by an air blower, drying and blowing to obtain the electret master batch for melt-blown non-woven fabric.
Comparative example
Commercially available electret masterbatch 7073
Spray coating was performed using examples 3 to 5 and comparative example, respectively, with the results shown in Table 1, where examples 3 to 5 were each added in an amount of 2% and comparative example was added in an amount of 10%.
TABLE 1 spray results of examples 1-5 and comparative examples
| Test items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 7073 |
| 32L/min single salt | 99.9％ | 99.8％ | 99.9％ | 99.2％ | 99.8％ | 99.8％ |
| 85L/min double salt property | 99.5％ | 99.1％ | 99.6％ | 98.6％ | 99.5％ | 99.5％ |
| 95L/min double-layer oiliness | 95.6％ | 94.2％ | 95.6％ | 90.2％ | 93.6％ | 92.9％ |
| 72H95L efficiency | 94.9％ | 92.6％ | 95.2％ | 89.8％ | 92.1％ | 92.2％ |
| 95L efficiency in 3 months | 92.5％ | 91.7％ | 94.6％ | 89.3％ | 90.4％ | 91.1％ |
| 95L efficiency in 6 months | 92.1％ | 90.2％ | 94.2％ | 89.2％ | 88.8％ | 89.7％ |
| Network change period | For 5 months | 6 months old | 6 months old | 3 months old | 6 months old | 2 months old |
From the data in the above table, it can be seen that the electret effect is best when the content of fumed silica is 4% and the content of magnesium stearate is 36%, and particularly the filtration efficiency of oily particles is obviously improved.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An electret masterbatch for melt-blown non-woven fabric is characterized by comprising the following raw materials: metallocene polypropylene, fumed silica, magnesium stearate, a primary antioxidant, a secondary antioxidant and a light stabilizer.
2. The electret masterbatch for melt-blown non-woven fabric according to claim 1, which comprises the following raw materials by weight: 54.772-66.857% of metallocene polypropylene, 30-40% of magnesium stearate, 3-5% of fumed silica, 0.003-0.008% of main antioxidant, 0.06-0.1% of auxiliary antioxidant and 0.08-0.12% of light stabilizer.
3. The electret masterbatch for melt-blown nonwoven fabric according to claim 1 or 2, wherein the magnesium stearate is 325 mesh SW-grade magnesium stearate of italian hair-based chemistry.
4. The electret masterbatch for meltblown nonwoven fabric according to claim 1 or 2, wherein the fumed silica is degussa 380.
5. The electret masterbatch for melt-blown non-woven fabric according to claim 1 or 2, wherein the primary antioxidant is primary antioxidant 1790, and the secondary antioxidant is secondary antioxidant 168.
6. The electret masterbatch for melt-blown nonwoven fabric according to claim 1 or 2, wherein the light stabilizer is light stabilizer UV 70.
7. The preparation method of the electret masterbatch for melt-blown non-woven fabric is characterized by comprising the following steps:
(1) weighing the raw materials according to the weight percentage of any one of claims 1 to 6 for later use;
(2) uniformly mixing all the raw materials, stirring for 8-15min, introducing into an extruder, extruding, and granulating to obtain particles;
(3) and screening, drying and blowing the obtained particles to obtain the electret master batch for the melt-blown non-woven fabric.
8. The method of claim 7, wherein the stirring speed in step (2) is 600-1200 rpm.
9. The method for preparing the electret masterbatch for melt-blown non-woven fabric according to claim 7, wherein the extruder is a twin-screw extruder;
the barrel temperature of the twin-screw extruder is 120, 150, 180, 200, 210, 220, 200, 180, 160, 150, 160 and 160 ℃, the rotating speed is 120-300rpm, and the die head temperature is 165-180 ℃.
10. The method for preparing the electret masterbatch for melt-blown non-woven fabric according to claim 7, wherein the temperature of the water for granulating in the step (2) is 32-45 ℃, and the speed is 300-600 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111546485.0A CN114163726A (en) | 2021-12-16 | 2021-12-16 | Electret masterbatch for melt-blown non-woven fabric and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111546485.0A CN114163726A (en) | 2021-12-16 | 2021-12-16 | Electret masterbatch for melt-blown non-woven fabric and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114163726A true CN114163726A (en) | 2022-03-11 |
Family
ID=80487016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111546485.0A Pending CN114163726A (en) | 2021-12-16 | 2021-12-16 | Electret masterbatch for melt-blown non-woven fabric and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114163726A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115956726A (en) * | 2022-12-20 | 2023-04-14 | 江苏美韦纶新材料科技有限公司 | Novel polylactic acid biodegradable protective isolation suit and processing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484678A (en) * | 2020-06-29 | 2020-08-04 | 金发科技股份有限公司 | Electret master batch for melt-blown non-woven fabric for low-resistance mask and preparation method thereof |
| CN111849074A (en) * | 2020-08-04 | 2020-10-30 | 广东聚石化学股份有限公司 | Electret master batch and preparation method and application thereof |
| CN111875886A (en) * | 2020-08-06 | 2020-11-03 | 广州鹿山新材料股份有限公司 | Polypropylene electret masterbatch, preparation method thereof and polypropylene melt-blown non-woven fabric |
| CN112773019A (en) * | 2021-01-29 | 2021-05-11 | 腾飞科技股份有限公司 | Protective mask capable of being washed repeatedly and preparation process 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 |
| CN113105692A (en) * | 2021-04-12 | 2021-07-13 | 广东众和化塑股份公司 | Electret master batch and preparation method and application thereof |
-
2021
- 2021-12-16 CN CN202111546485.0A patent/CN114163726A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484678A (en) * | 2020-06-29 | 2020-08-04 | 金发科技股份有限公司 | Electret master batch for melt-blown non-woven fabric for low-resistance mask and preparation method thereof |
| CN111849074A (en) * | 2020-08-04 | 2020-10-30 | 广东聚石化学股份有限公司 | Electret master batch and preparation method and application thereof |
| CN111875886A (en) * | 2020-08-06 | 2020-11-03 | 广州鹿山新材料股份有限公司 | Polypropylene electret masterbatch, preparation method thereof and polypropylene melt-blown non-woven fabric |
| 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 |
| CN112773019A (en) * | 2021-01-29 | 2021-05-11 | 腾飞科技股份有限公司 | Protective mask capable of being washed repeatedly and preparation process thereof |
| CN113105692A (en) * | 2021-04-12 | 2021-07-13 | 广东众和化塑股份公司 | Electret master batch and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115956726A (en) * | 2022-12-20 | 2023-04-14 | 江苏美韦纶新材料科技有限公司 | Novel polylactic acid biodegradable protective isolation suit and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107119342B (en) | A kind of superelevation conductive graphene polyester fiber and preparation method thereof | |
| CN111875886A (en) | Polypropylene electret masterbatch, preparation method thereof and polypropylene melt-blown non-woven fabric | |
| CN1293243C (en) | Bamboo-charcoal viscose fiber and method for making same | |
| CN112870848A (en) | Multifunctional melt-blown filter element and preparation process thereof | |
| CN112921502A (en) | Antibacterial and antiviral melt-blown fabric and preparation method thereof | |
| CN111484674A (en) | Preparation method of polypropylene melt-blown electret master batch | |
| CN114163726A (en) | Electret masterbatch for melt-blown non-woven fabric and preparation method thereof | |
| CN113430717B (en) | Preparation method of bactericidal and antiviral melt-blown filter material | |
| CN107880500B (en) | Silver-series antibacterial polyester master batch and preparation method thereof | |
| CN112694667A (en) | Polypropylene electret masterbatch, melt-blown fabric and preparation method thereof | |
| CN108499220A (en) | Graphene/polypropylene nonwoven filter screen preparation method and applications | |
| CN112870850A (en) | Antibacterial melt-blown material and preparation method and application thereof | |
| CN111303534A (en) | Special rare earth/polypropylene composite master batch for melt-blowing, melt-blown fabric and preparation method thereof | |
| CN111749017A (en) | High-strength antibacterial melt-blown air filter material and preparation method thereof | |
| CN111334931A (en) | Novel polypropylene melt-blown fabric formula and processing technology thereof | |
| CN112251910A (en) | Mineral graphene melt-blown fabric and preparation method thereof | |
| CN109468691A (en) | A kind of antibiotic polyester fiber and preparation method thereof | |
| CN111602903A (en) | Preparation process method of high-polymer-material high-filterability non-woven mask | |
| CN113980392A (en) | Electret master batch for melt-blown fabric and preparation method thereof | |
| CN107189223A (en) | A kind of special ultra-dispersed Masterbatch of polypropylene melt spraying and preparation method thereof | |
| CN112480542A (en) | Preparation method of high-filterability polypropylene melt-blown non-woven fabric electret master batch material | |
| CN111534000A (en) | Process for producing melt-blown material | |
| CN114367149B (en) | Filter material and preparation method and application thereof | |
| CN113198255B (en) | Ultralow-resistance melt-blown filter material and production process thereof | |
| CN112920508B (en) | Polypropylene electret master batch with high dielectric constant and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220311 |