CN115073846A - Polypropylene melt-blown material and preparation method thereof - Google Patents
Polypropylene melt-blown material and preparation method thereof Download PDFInfo
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- CN115073846A CN115073846A CN202210771407.9A CN202210771407A CN115073846A CN 115073846 A CN115073846 A CN 115073846A CN 202210771407 A CN202210771407 A CN 202210771407A CN 115073846 A CN115073846 A CN 115073846A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a polypropylene melt-blown material and a preparation method thereof, wherein the polypropylene melt-blown material comprises the following components in parts by weight: 80-120 parts of polypropylene, 2-4 parts of modified nano silicon dioxide, 3-5 parts of composite antibacterial agent, 0.2-0.4 part of antioxidant, 0.3-0.5 part of halogen absorbent and 0.5-1.5 parts of degradation agent. The polypropylene melt-blown material has good antibacterial property and hydrophobic property, and the non-woven fabric prepared from the melt-blown material has good antibacterial property, good touch softness and excellent hydrophobic property.
Description
Technical Field
The invention relates to the technical field of melt-blown non-woven fabrics, in particular to a polypropylene melt-blown material and a preparation method thereof.
Background
The polypropylene melt-blown fabric is the heart of the medical mask, has good filtering property, shielding property, heat insulation property and oil absorption property, and is an important raw material for producing medical surgical masks and N95 masks. The main raw material of the melt-blown fabric is polypropylene, and the melt-blown fabric is superfine electrostatic fiber fabric with the fiber diameter of about 1-5 microns. The diameter of the dust catcher is only one tenth of the diameter of the fiber on the outer layer of the mask, so that dust can be effectively caught; especially, after electret treatment, the electrostatic adsorption effect is also added to the melt-blown cloth besides the mechanical blocking effect, and the flying powder containing virus is adsorbed on the surface of the cloth by electrostatic charge after approaching the melt-blown cloth and can not enter the human body through the cloth, so the cloth is a necessary raw material for producing the mask with the filtering function.
The invention patent with publication number CN112552589B discloses a melt-blown material for antibacterial polypropylene melt-blown fabric and a preparation method and application thereof, wherein chitosan is adopted as an antibacterial agent, but the antibacterial effect of chitosan is poor under a neutral condition. Silver ions are an excellent antimicrobial material and are also commonly used as an antimicrobial agent. However, it also has the disadvantage of poor loading effect and easy migration.
In addition, polypropylene has the advantages of good film-forming property, gloss, weather resistance and the like as a main material of the melt-blown material. However, the mask has poor water resistance, is easily affected by breathing and is wet, and the internal structure of the mask is easily damaged under the wet condition, so that the protection effect is reduced. Based on the above, the technical problem to be solved by the invention is how to design a polypropylene melt-spraying material with excellent antibacterial performance and good waterproof performance and a preparation method thereof.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a polypropylene melt-spraying material with excellent antibacterial performance and good waterproof performance and a preparation method thereof.
The invention solves the technical problems through the following technical means:
the polypropylene melt-spraying material comprises the following components in parts by weight: 80-120 parts of polypropylene, 2-4 parts of modified nano silicon dioxide, 3-5 parts of composite antibacterial agent, 0.2-0.4 part of antioxidant, 0.3-0.5 part of halogen absorbent and 0.5-1.5 parts of degradation agent.
As an improvement of the technical scheme, the preparation method of the modified nano silicon dioxide comprises the following steps: dissolving a silane coupling agent in acetone, adding nano silicon dioxide after uniformly stirring, stirring and carrying out ultrasonic treatment for 0.5h, then adding organic silicon and organic fluorine, continuing ultrasonic dispersion for 0.5h, taking out, drying and grinding.
As an improvement of the technical scheme, the polypropylene melt-blown material is characterized in that the composite antibacterial agent is a chitosan-silver ion composite antibacterial agent, and the preparation method comprises the following steps: taking a silver ion solution with the concentration of 35-55mg/L, adjusting the pH value to 6, adding the nano chitosan fiber in a stirring state, stirring for 3-5h at the temperature of 20-30 ℃ and at the speed of 250r/min, taking out, drying and grinding.
As an improvement of the technical scheme, the polypropylene melt-spraying material comprises the following components in parts by mass of 1 (45-55): (2-3): (8-12): (8-12).
As an improvement of the technical scheme, the mass ratio of the silver ion solution to the nano chitosan fiber is 200: 1.
As the improvement of the technical proposal, the antioxidant of the polypropylene melt-blown material is one or the combination of phosphite ester antioxidant or hindered phenol antioxidant; the halogen absorbent is one or more of zinc stearate, magnesium stearate, calcium stearate or barium stearate; the degradation agent is one or a plurality of compositions of benzoyl peroxide, dicumyl peroxide or di-tert-butyl peroxide.
The preparation method of the polypropylene melt-blown material comprises the following steps:
mixing materials: weighing polypropylene, modified nano-silica, a composite antibacterial agent, an antioxidant, a halogen absorbent and a degrading agent according to the weight parts, and feeding the materials into a mixer to be uniformly mixed;
II, melt extrusion: feeding the uniformly mixed materials into a double-screw extruder for melting and extruding;
and III, pelletizing: and cooling and pelletizing after extrusion.
As an improvement of the technical scheme, in the preparation method of the polypropylene melt-blown material, in the step I, the mixing time is 0.1-0.2 h.
As an improvement of the technical scheme, in the step II, the melting temperature is 250-350 ℃, and the rotating speed of the double-screw extruder is 250-450 rpm.
The invention has the advantages that: the nano silicon dioxide is used as a carrier, organic silicon and organic fluorine are introduced into the melt-blown material, and fluorine atoms in the organic fluorine have larger electronegativity and can be combined with carbon atoms to form a more stable F-C bond, so that the surface energy of polypropylene is reduced, and the prepared melt-blown material has excellent hydrophobicity; the Si-O bond energy in the organic silicon is higher, and the bond angle of the Si-O-Si is larger, so that the flexibility of the main chain can be increased, and the flexibility of a non-woven fabric product can be further increased; the nano silicon dioxide is used as a carrier, so that the stain resistance and the weather resistance of the non-woven fabric product can be improved.
The antibacterial agent adopts a chitosan and silver ion composite antibacterial agent, and silver ions are loaded on the surface of chitosan fibers by utilizing the adsorption effect of the chitosan fibers on the silver ions, so that the antibacterial capability of the chitosan can be improved, the silver ions are well fixed, the complementary advantages of the chitosan and the silver ions are exerted, the antibacterial effect is improved, and the antibacterial rate to escherichia coli and staphylococcus aureus is close to 100%.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the 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.
The polypropylene melt-spraying material comprises the following components in parts by weight: 80-120 parts of polypropylene, 2-4 parts of modified nano silicon dioxide, 3-5 parts of composite antibacterial agent, 0.2-0.4 part of antioxidant, 0.3-0.5 part of halogen absorbent and 0.5-1.5 parts of degradation agent.
As an improvement of the technical scheme, the preparation method of the modified nano silicon dioxide comprises the following steps: dissolving a silane coupling agent in acetone, adding nano silicon dioxide after uniformly stirring, stirring and carrying out ultrasonic treatment for 0.5h, then adding organic silicon and organic fluorine, continuing ultrasonic dispersion for 0.5h, taking out, drying and grinding.
As an improvement of the technical scheme, the polypropylene melt-blown material is characterized in that the composite antibacterial agent is a chitosan-silver ion composite antibacterial agent, and the preparation method comprises the following steps: taking a silver ion solution with the concentration of 35-55mg/L, adjusting the pH value to 6, adding the nano chitosan fiber in a stirring state, stirring for 3-5h at the temperature of 20-30 ℃ and at the speed of 250r/min, taking out, drying and grinding.
As an improvement of the technical scheme, the polypropylene melt-spray material comprises the following components in parts by mass of 1 (45-55): (2-3): (8-12): (8-12).
As an improvement of the technical scheme, the mass ratio of the silver ion solution to the nano chitosan fiber is 200: 1.
As the improvement of the technical proposal, the antioxidant of the polypropylene melt-blown material is one or the combination of phosphite ester antioxidant or hindered phenol antioxidant; the halogen absorbent is one or more of zinc stearate, magnesium stearate, calcium stearate or barium stearate; the degradation agent is one or a plurality of compositions of benzoyl peroxide, dicumyl peroxide or di-tert-butyl peroxide.
The preparation method of the polypropylene melt-blown material comprises the following steps:
mixing materials: weighing the polypropylene, the modified nano-silica, the composite antibacterial agent, the antioxidant, the halogen absorbent and the degrading agent according to the weight parts, and feeding the materials into a mixer to mix for 0.1 to 0.2 h;
II, melt extrusion: feeding the uniformly mixed materials into a double-screw extruder for melting and extruding, wherein the melting temperature is 250-350 ℃, and the rotating speed of the double-screw extruder is 250-450 rpm;
III, pelletizing: and cooling and pelletizing after extrusion.
Table 1, table of ingredients of each example and comparative example, the compounding ratio of each ingredient is in parts by weight (kg).
The melt-blown materials obtained in the above examples and comparative examples were produced into nonwoven fabrics, and the properties of the produced nonwoven fabrics are shown in Table 2.
TABLE 2 Properties of nonwoven fabrics from meltblown obtained in examples and comparative examples
Wherein, the water contact angle and the Escherichia coli antibacterial rate are detected by Chinese national standards; the hand feel was evaluated by touching the nonwoven fabric with a hand, with grade A being the best, grade B being the next to grade B, and grade C being the worst.
As can be seen from the analysis of the data in tables 1 and 2, the non-woven fabrics prepared by the examples 1-3 added with the modified nano silicon dioxide raw material have larger water distribution contact angle, i.e. better hydrophobic property; meanwhile, compared with the non-woven fabric without the modified nano silicon dioxide, the hand feeling is softer;
the composite antibacterial agent of silver ions and chitosan is added in the examples 1-3, and the chitosan is added in the comparative examples 1-3 for antibiosis, and obviously, the antibacterial performance of the non-woven fabric product added with the composite antibacterial agent of silver ions and chitosan is more excellent.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The polypropylene melt-spraying material is characterized by comprising the following components in parts by weight: 80-120 parts of polypropylene, 2-4 parts of modified nano silicon dioxide, 3-5 parts of composite antibacterial agent, 0.2-0.4 part of antioxidant, 0.3-0.5 part of halogen absorbent and 0.5-1.5 parts of degradation agent.
2. The polypropylene meltblown according to claim 1, wherein the modified nano silica is prepared by a method comprising: dissolving a silane coupling agent in acetone, adding nano silicon dioxide after uniformly stirring, stirring and carrying out ultrasonic treatment for 0.5h, then adding organic silicon and organic fluorine, continuing ultrasonic dispersion for 0.5h, taking out, drying and grinding.
3. The polypropylene meltblown material of claim 1, wherein: the composite antibacterial agent is a chitosan-silver ion composite antibacterial agent, and the preparation method comprises the following steps: taking a silver ion solution with the concentration of 35-55mg/L, adjusting the pH value to 6, adding the nano chitosan fiber in a stirring state, stirring for 3-5h at the temperature of 20-30 ℃ and at the speed of 250r/min, taking out, drying and grinding.
4. The polypropylene meltblown of claim 2 wherein: the mass ratio of the silane coupling agent to the nano silicon dioxide to the acetone to the organic silicon to the organic fluorine is 1 (45-55): (2-3): (8-12): (8-12).
5. The polypropylene meltblown of claim 3, wherein: the mass ratio of the silver ion solution to the nano chitosan fiber is 200: 1.
6. The polypropylene meltblown of claim 1, wherein: the antioxidant is one or a combination of phosphite antioxidant and hindered phenol antioxidant; the halogen absorbent is one or more of zinc stearate, magnesium stearate, calcium stearate or barium stearate; the degradation agent is one or a plurality of compositions of benzoyl peroxide, dicumyl peroxide or di-tert-butyl peroxide.
7. A process for the preparation of a polypropylene meltblown according to any of claims 1-6, comprising the steps of:
mixing materials: weighing polypropylene, modified nano-silica, a composite antibacterial agent, an antioxidant, a halogen absorbent and a degrading agent according to the weight parts, and feeding the materials into a mixer to be uniformly mixed;
II, melt extrusion: feeding the uniformly mixed materials into a double-screw extruder for melting and extruding;
and III, pelletizing: cooling and pelletizing after extrusion.
8. The method of claim 7, wherein: in the step I, the mixing time is 0.1-0.2 h.
9. The method of claim 7, wherein: in the step II, the melting temperature is 250-350 ℃, and the rotating speed of the double-screw extruder is 250-450 rpm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210771407.9A CN115073846A (en) | 2022-06-30 | 2022-06-30 | Polypropylene melt-blown material and preparation method thereof |
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| CN202210771407.9A CN115073846A (en) | 2022-06-30 | 2022-06-30 | Polypropylene melt-blown material and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040259973A1 (en) * | 2001-10-17 | 2004-12-23 | Shuji Sakuma | Anti-bacterial composite particles and anti-bacterial resin composition |
| JP2008088609A (en) * | 2006-10-04 | 2008-04-17 | Kuraray Co Ltd | Antibacterial fiber sheet |
| CN110343327A (en) * | 2019-07-19 | 2019-10-18 | 泉州师范学院 | A kind of chitosan loaded nanometer silver antimicrobial polypropylene material and preparation method thereof |
| CN111469295A (en) * | 2020-04-14 | 2020-07-31 | 苏州禾昌聚合材料股份有限公司 | Production method and production equipment of polypropylene melt-blown material |
| CN112940391A (en) * | 2019-12-10 | 2021-06-11 | 杭州如墨科技有限公司 | Preparation method of oil-stain-resistant polypropylene plastic |
| CN114106458A (en) * | 2021-11-17 | 2022-03-01 | 中核同辐（长春）辐射技术有限公司 | Irradiation modified PP melt-blown material and composite forming process thereof |
| CN114196104A (en) * | 2021-12-17 | 2022-03-18 | 江苏尚艾新材料科技有限公司 | Antibacterial oil-stain-resistant polypropylene material and preparation method thereof |
-
2022
- 2022-06-30 CN CN202210771407.9A patent/CN115073846A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040259973A1 (en) * | 2001-10-17 | 2004-12-23 | Shuji Sakuma | Anti-bacterial composite particles and anti-bacterial resin composition |
| JP2008088609A (en) * | 2006-10-04 | 2008-04-17 | Kuraray Co Ltd | Antibacterial fiber sheet |
| CN110343327A (en) * | 2019-07-19 | 2019-10-18 | 泉州师范学院 | A kind of chitosan loaded nanometer silver antimicrobial polypropylene material and preparation method thereof |
| CN112940391A (en) * | 2019-12-10 | 2021-06-11 | 杭州如墨科技有限公司 | Preparation method of oil-stain-resistant polypropylene plastic |
| CN111469295A (en) * | 2020-04-14 | 2020-07-31 | 苏州禾昌聚合材料股份有限公司 | Production method and production equipment of polypropylene melt-blown material |
| CN114106458A (en) * | 2021-11-17 | 2022-03-01 | 中核同辐（长春）辐射技术有限公司 | Irradiation modified PP melt-blown material and composite forming process thereof |
| CN114196104A (en) * | 2021-12-17 | 2022-03-18 | 江苏尚艾新材料科技有限公司 | Antibacterial oil-stain-resistant polypropylene material and preparation method thereof |
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