CN112239919A - Polymer nano biological filter element material and preparation method and application thereof - Google Patents
Polymer nano biological filter element material and preparation method and application thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- 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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—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
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/06—Inorganic compounds or elements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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Abstract
The invention relates to a polymer nano biological filter element material and a preparation method and application thereof, wherein the polymer nano biological filter element material is prepared from the following raw materials in parts by weight: 1-4 parts of nano titanium dioxide, 1-4 parts of nano silicon dioxide, 50-100 parts of high-melt index polypropylene, 2-3 parts of electret master batch, 0.008-0.012 part of coupling agent, 0.01-0.03 part of polymer nano particle, 0.13-0.17 part of toughening agent, 0.008-0.012 part of antioxidant and 0.7-1.3 parts of POE elastic composite material. The polymer nano biological filter core material prepared by the invention has strong adsorption capacity, the antibacterial and bactericidal performance of the material can be improved by coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material, the wound healing is promoted in the aspect of applying wound dressing, and scars are not easy to leave.
Description
Technical Field
The invention belongs to the technical field of nano materials, and particularly relates to a high-molecular nano biological filter element material as well as a preparation method and application thereof.
Background
Pathogenic microorganisms such as bacteria and mold are ubiquitous in the production and daily life environments of people, and the health of human beings is threatened. With the development of science and technology and the improvement of living standard of people, the antibacterial property of durable consumer goods such as clothes, sanitary products, daily necessities, food packaging and the like is required to be higher.
The common antibacterial materials can be classified into several types, inorganic types, natural types and the like, the traditional organic antibacterial materials have the defects of non-broad-spectrum antibacterial property, poor chemical stability, poor heat resistance, easy aging and the like, the natural antibacterial materials start to be carbonized and decomposed at the temperature of 150-180 ℃, the application range is narrow, and the inorganic antibacterial materials have the advantages of broad-spectrum antibacterial property, good heat resistance and the like. However, the common inorganic antibacterial agent at present is mainly prepared by mixing oxide or simple substance particles containing antibacterial ions such as silver, copper, zinc and the like with carriers such as zeolite, phosphate, hydroxyapatite or soluble glass and the like, so that the antibacterial long-acting property is improved through a certain slow release effect, but the antibacterial ions are not uniformly dispersed, the release speed of the antibacterial ions is too fast and random and uncontrollable, the sustained-release effect is short in sustainable time, and the long-term stability of the antibacterial property is poor.
The present invention has been made in view of the above circumstances.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a polymer nano biological filter element material and a preparation method and application thereof.
The invention provides a polymer nano biological filter element material which is prepared from the following raw materials in parts by weight: 1-4 parts of nano titanium dioxide, 1-4 parts of nano silicon dioxide, 50-100 parts of high-melt index polypropylene, 2-3 parts of electret master batch, 0.008-0.012 part of coupling agent, 0.01-0.03 part of polymer nano particle, 0.13-0.17 part of toughening agent, 0.008-0.012 part of antioxidant and 0.7-1.3 parts of POE elastic composite material.
Further, the feed additive is prepared from the following raw materials in parts by weight: 2.5 parts of nano titanium dioxide, 2.5 parts of nano silicon dioxide, 75 parts of high-melt index polypropylene, 2.5 parts of electret master batch, 0.01 part of coupling agent, 0.02 part of polymer nano particle, 0.15 part of toughening agent, 0.01 part of antioxidant and 1 part of POE elastic composite material.
In the invention, all raw materials are purchased from commercial raw materials, the electret master batch takes polypropylene as a main raw material, inorganic materials are added into the melt-blown electret master batch, negative charges (static electricity) can be continuously released on the surface, and the nano tourmaline special powder can increase the filtering effect and the electric adsorption effect after being ground by a tourmaline dispersant.
Furthermore, the particle size of the nano titanium dioxide is 5-10nm, and the particle size of the nano silicon dioxide is 15-25 nm.
Furthermore, the melt index of the high-melt index polypropylene is more than or equal to 1700.
Further, the coupling agent is a coupling agent ST-5, the polymer nanoparticles are polyglycolide, and the antioxidant is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
The coupling agent ST-5 is selected from polypropylene and is prepared by grafting maleic anhydride on the basis of reaction, and the coupling agent can be a bridge for improving the bonding property and compatibility of polar materials and non-polar materials due to the introduction of a strong-polarity side group on a non-polar molecular main chain. The toughening agent can improve the spinnability of the material, the spinnability is improved along with the increase of the content, the high strength and the high flexibility are reflected, and the toughening agent can be widely applied to the fields of packaging and medical and sanitary products. Better spinnability and finer PP fiber can be obtained, fluctuation of fiber diameter is not observed under the condition of no cooling air at high spinning speed, crystallization of PP is slowed down due to the occurrence of low-isotacticity component, PP is more easily drafted sufficiently, the solidification position of spinning is moved to downstream, neck-shaped deformation is also inhibited, spinnability is improved, and CD strength of nonwoven melt-blown fabric can be enhanced.
The POE elastic composite material is a material used for diapers, elastic waistlines and the like for children or adults, and has low price and low relative density. Excellent heat resistance and cold resistance, and wide application range. The weather resistance and the aging resistance are good. The particularity of the POE molecular structure ensures that the comprehensive performance of the POE is quite excellent; as a toughening material, POE has the characteristics of small addition amount, obvious toughening effect, small influence on the performance of base resin and the like, the appearance of the novel high polymer draws wide attention of the global rubber and plastic world, and brings a brand new concept for modification and processing application of the polymer; compared with other traditional elastomers, POE has the following main characteristics: the molecular chain structure has no unsaturated bond, contains few tertiary carbon atoms and has more excellent weather resistance and thermal stability; the commercial POE is granular and can be directly added into granular polymers such as polypropylene (PP) and the like, and the mixing is more uniform and faster; the material has high transparency, and the density of the non-crosslinked POE is 10 to 20 percent lower than that of SBS and EVA; can be crosslinked by peroxide, silane and radiation, and the thermal aging and ultraviolet light weathering aging performance of the crosslinked POE is superior to EPR and Ethylene Propylene Diene Monomer (EPDM).
The invention provides a preparation method of a high-molecular nano biological filter element material, which comprises the following steps:
(1) weighing the raw materials in parts by weight respectively for later use;
(2) modifying the nano silicon dioxide and the nano titanium dioxide: drying nano silicon dioxide and nano titanium dioxide, dissolving the dried nano silicon dioxide and nano titanium dioxide in toluene, adding a coupling agent, carrying out ultrasonic mixing oscillation, carrying out water bath reflux treatment, cleaning with absolute ethyl alcohol, carrying out suction filtration, and drying to obtain a modified mixture of nano silicon dioxide and nano titanium dioxide;
(3) uniformly mixing the modified mixture of the nano silicon dioxide and the nano titanium dioxide with the high-melt-index polypropylene, the electret master batch, the rest coupling agent, the polymer nano particles, the toughening agent, the antioxidant and the POE elastic composite material, and preparing the polypropylene melt-blown high-molecular polymer non-woven fabric by melt-blown non-woven forming equipment;
(4) performing electret treatment on the polypropylene melt-blown high-molecular polymer non-woven fabric to obtain a nano modified melt-blown non-woven fabric material;
(5) coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material to obtain the polymer nano biological filter element material.
Further, the drying temperature of the nano silicon dioxide and the nano titanium dioxide in the step (2) is 100-140 ℃, and the time of ultrasonic mixing and oscillation is 20-45 min.
Furthermore, in the step (2), the mass of the nano silicon dioxide and the nano titanium dioxide is 1-6% of that of the toluene respectively, and the volume of the coupling agent is 0.05-0.3% of that of the toluene.
Furthermore, the temperature of the water bath reflux is 85-105 ℃, and the reflux time is 150-180 min.
Further, the temperature of the water bath reflux is 95 ℃, and the reflux time is 165 min.
Further, the mass fraction of the montmorillonite in the montmorillonite solution in the step (5) is 4-5%.
The production process of the melt-blown non-woven fabric is as follows:
the composite materials such as polypropylene chips are melted by a screw extruder, sprayed into fiber shape through a spinneret orifice, strongly stretched under the blowing of high-speed (13000m/min) hot air flow to form superfine short fibers, the short fibers are adsorbed on a net forming curtain, and the high temperature can be still kept after the fibers are condensed into a net, so that the fibers are mutually adhered to form melt-blown non-woven fabric, and finally the non-woven fabric is coiled and packed.
The equipment of the continuous production line of the melt-blown non-woven fabric is about 6m in height, about 5m in width and about 20m in length, and the production equipment is as follows:
(1) screw extruder: the screw diameter is generally 100 to 120mm, and the length/diameter ratio is 30, so that the screw can melt the chips.
(2) A metering pump: the function of the pump is to accurately meter, control the yield and fineness of the fibers, and to continuously feed the melt to the spinneret as a gear pump.
(3) A melt filter: the function of the filter is to filter out impurities in the melt so as not to block the spinneret orifices.
(4) Conveying the net curtain: the melt-blown fiber is uniformly received and spread on a net, and is conveyed forwards, and a suction fan is arranged below the net to discharge hot air from the top.
(5) Spinning a box body: the key equipment of the melt-blown process is 1 long strip-shaped spinneret plate, a long row of spinneret orifices are distributed on the spinneret plate, and generally about 1500 nozzle orifices are arranged in each meter. Hot air nozzles are arranged on two side surfaces of the spinneret plate, hot air nozzles are arranged below the spinneret plate, and an angle of 50 degrees is formed between the hot air nozzles and the spinneret holes, so that after the fibers are sprayed out, high-speed hot air is used for carrying out airflow drawing immediately, and the fibers are blown and broken into superfine fibers.
(6) A feeding system: the device consists of 3 metering hoppers which are respectively used for metering white chips, color master batches and additives, and 3 components are uniformly mixed in a mixing stirrer below, namely, the device is put into production.
(7) The hot air blower and the heater provide the temperature and the pressure of hot air used in spinning airflow stretching, and are electrically heated, so that the power consumption is larger.
(8) The recoiling machine adopts full-automatic recoiling, and the melt-blown fabric is packaged in a coiled mode. The fiber of the melt-blown non-woven fabric is characterized by being superfine, and the minimum fiber diameter can reach 0.5Lm, generally between 1 and 5 Lm. Finer fibers give better quality meltblown but relatively lower throughput. The superfine fiber has great specific surface area and high adsorption capacity, and this is the most outstanding advantage of melt blown fabric.
The invention also provides application of the polymer nano biological filter element material in medical surgical dressings, hospital bed nursing pads, female daily nursing products, water works filter elements, medical and military joint patches, plasters, muscle key protection patches, military and police hats, helmets, knee pads, elbow pads, wrist pads, wearable devices, patch filter elements, effective bacteriostasis, sterilization, oil absorption and deodorization, military insoles and underwear filter elements for men and women.
The polymer nano biological filter element material is applied to medical surgical accessories, directly kills bacteria, controls wound infection, accelerates wound healing, removes peculiar smell generated by the bacteria, and is an ideal anti-infection dressing.
The multifunctional nursing pad is used on a nursing pad of a sickbed, can better treat bloodstains, stains and the like on the sickbed, is clean and sanitary, greatly lightens the workload of nursing personnel, makes patients more comfortable, effectively and actively sterilize, and can be used for treating skin tissue infection and bedsore. Can also be used for puerpera pads, gynecological examination pads, operation pads, hemostatic pads and long-term bedridden patient nursing medical institutions.
The product is applied to female daily care products, such as sanitary pads, sanitary towels, safety pants and the like, so that female friends can be better cared and cared for in daily care during menstrual period, the normal pH value of a human body can be maintained, active sterilization is realized, and gynecological inflammation is prevented.
Compared with the prior art, the invention has the beneficial effects that:
(1) the polymer nano biological filter element material prepared by the invention has strong adsorption capacity, the antibacterial and bactericidal performance of the material can be improved by coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material, the wound healing is promoted in the aspect of applying wound dressing, scars are not easy to remain, the nano biological filter element material is applied to underpants, inhibits the regeneration of flora in the field of underwear in a humid environment, and has the functions of ventilation, water resistance and bacteriostasis in the fields of gynecological cloth pads, operation patches, medical nursing mattresses, water purification, military underwear, tactical underwear and the like;
(2) according to the preparation method of the polymer nano biological filter element material, the nano silicon dioxide and the nano titanium dioxide are firstly modified, so that the mechanical property and the strength of the finally prepared polymer nano biological filter element material are improved, and meanwhile, the inventor discovers through a large number of experiments that the antibacterial property of the polymer nano biological filter element material is greatly improved after modification treatment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the following examples, the starting materials are commercially available and conventional ones in the art are used.
Example 1
The polymer nano biological filter element material comprises the following raw materials: 1kg of nano titanium dioxide, 4kg of nano silicon dioxide, 50kg of high-melt-index polypropylene, 3kg of electret master batch, 0.008kg of coupling agent, 0.03kg of high-molecular nano particle, 0.13kg of toughening agent, 0.012kg of antioxidant and 0.7kg of POE elastic composite material; the particle size of the nano titanium dioxide is 5nm, the particle size of the nano silicon dioxide is 25nm, the melt index of the high-melting index polypropylene is more than or equal to 1700, the coupling agent is a coupling agent ST-5, the polymer nano particles are polyglycolide, and the antioxidant is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
The preparation method of the polymer nano biological filter element material comprises the following steps:
(1) weighing the raw materials in parts by weight respectively for later use;
(2) modifying the nano silicon dioxide and the nano titanium dioxide: drying nano silicon dioxide and nano titanium dioxide at the drying temperature of 100 ℃, dissolving the nano silicon dioxide and the nano titanium dioxide in toluene, wherein the mass of each nano silicon dioxide and the mass of each nano titanium dioxide is 1% of that of the toluene, adding a coupling agent, the volume of the coupling agent is 0.05% of that of the toluene, carrying out ultrasonic mixing oscillation for 20min, carrying out water bath reflux treatment, carrying out water bath reflux at the water bath reflux temperature of 85 ℃, carrying out reflux time for 180min, cleaning with absolute ethyl alcohol, carrying out suction filtration, and drying to obtain a mixture of the modified nano silicon dioxide and the nano titanium dioxide;
(3) uniformly mixing the modified mixture of the nano silicon dioxide and the nano titanium dioxide with the high-melt-index polypropylene, the electret master batch, the rest coupling agent, the polymer nano particles, the toughening agent, the antioxidant and the POE elastic composite material, and preparing the polypropylene melt-blown high-molecular polymer non-woven fabric by melt-blown non-woven forming equipment;
(4) performing electret treatment on the polypropylene melt-blown high-molecular polymer non-woven fabric to obtain a nano modified melt-blown non-woven fabric material;
(5) coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material, wherein the mass fraction of montmorillonite in the montmorillonite solution is 4 percent, and obtaining the polymer nano biological filter element material.
Example 2
The polymer nano biological filter element material comprises the following raw materials: 2.5kg of nano titanium dioxide, 2.5kg of nano silicon dioxide, 75kg of high-melt index polypropylene, 2.5kg of electret master batch, 0.01kg of coupling agent, 0.02kg of polymer nano particle, 0.15kg of toughening agent, 0.01kg of antioxidant and 1kg of POE elastic composite material; the particle size of the nano titanium dioxide is 7.5nm, the particle size of the nano silicon dioxide is 20nm, the melt index of the high-melting index polypropylene is more than or equal to 1700, the coupling agent is a coupling agent ST-5, the polymer nano particles are polyglycolide, and the antioxidant is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
The preparation method of the polymer nano biological filter element material comprises the following steps:
(1) weighing the raw materials in parts by weight respectively for later use;
(2) modifying the nano silicon dioxide and the nano titanium dioxide: drying nano silicon dioxide and nano titanium dioxide at the drying temperature of 120 ℃, dissolving the nano silicon dioxide and the nano titanium dioxide in toluene, wherein the mass of the nano silicon dioxide and the nano titanium dioxide is respectively 3.5 percent of that of the toluene, adding a coupling agent, the volume of the coupling agent is 0.175 percent of that of the toluene, carrying out ultrasonic mixing oscillation for 32.5min, carrying out water bath reflux treatment, wherein the water bath reflux temperature is 95 ℃, the reflux time is 165min, cleaning with absolute ethyl alcohol, carrying out suction filtration and drying to obtain a mixture of the modified nano silicon dioxide and the nano titanium dioxide;
(3) uniformly mixing the modified mixture of the nano silicon dioxide and the nano titanium dioxide with the high-melt-index polypropylene, the electret master batch, the rest coupling agent, the polymer nano particles, the toughening agent, the antioxidant and the POE elastic composite material, and preparing the polypropylene melt-blown high-molecular polymer non-woven fabric by melt-blown non-woven forming equipment;
(4) performing electret treatment on the polypropylene melt-blown high-molecular polymer non-woven fabric to obtain a nano modified melt-blown non-woven fabric material;
(5) coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material, wherein the mass fraction of montmorillonite in the montmorillonite solution is 4.5 percent, and obtaining the polymer nano biological filter element material.
Example 3
The polymer nano biological filter element material comprises the following raw materials: 4kg of nano titanium dioxide, 1kg of nano silicon dioxide, 100kg of high-melt-index polypropylene, 2kg of electret master batch, 0.012kg of coupling agent, 0.01kg of polymer nano particles, 0.17kg of toughening agent, 0.008kg of antioxidant and 1.3kg of POE elastic composite material; the particle size of the nano titanium dioxide is 10nm, the particle size of the nano silicon dioxide is 15nm, the melt index of the high-melting index polypropylene is more than or equal to 1700, the coupling agent is a coupling agent ST-5, the polymer nano particles are polyglycolide, and the antioxidant is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
The preparation method of the polymer nano biological filter element material comprises the following steps:
(1) weighing the raw materials in parts by weight respectively for later use;
(2) modifying the nano silicon dioxide and the nano titanium dioxide: drying nano silicon dioxide and nano titanium dioxide at the drying temperature of 140 ℃, dissolving the nano silicon dioxide and the nano titanium dioxide in toluene, adding a coupling agent, wherein the volume of the coupling agent is 0.3% of that of the toluene, carrying out ultrasonic mixing oscillation for 45min, carrying out water bath reflux treatment at the water bath reflux temperature of 105 ℃ for 150min, cleaning with absolute ethyl alcohol, carrying out suction filtration and drying to obtain a mixture of the modified nano silicon dioxide and the modified nano titanium dioxide;
(3) uniformly mixing the modified mixture of the nano silicon dioxide and the nano titanium dioxide with the high-melt-index polypropylene, the electret master batch, the rest coupling agent, the polymer nano particles, the toughening agent, the antioxidant and the POE elastic composite material, and preparing the polypropylene melt-blown high-molecular polymer non-woven fabric by melt-blown non-woven forming equipment;
(4) performing electret treatment on the polypropylene melt-blown high-molecular polymer non-woven fabric to obtain a nano modified melt-blown non-woven fabric material;
(5) coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material, wherein the mass fraction of montmorillonite in the montmorillonite solution is 5 percent, and obtaining the polymer nano biological filter element material.
Comparative example 1
The raw materials and preparation method of the polymer nano biological filter element material of the comparative example are the same as those of the example 2, except that the nano titanium dioxide and the nano silicon dioxide are not modified.
Comparative example 2
The raw materials and preparation method of the polymer nano biological filter core material of the comparative example are the same as those of the example 2, except that the montmorillonite solution is not coated in the step (5).
Comparative example 3
The raw materials and the preparation method of the polymer nano biological filter core material of the comparative example are the same as those of the example 2, except that the POE elastic composite material is not added in the raw materials.
Test example 1
Respectively carrying out bacteriostasis tests on the polymer nano biological filter core materials prepared in the examples 1-3 and the comparative examples 1 and 2, mainly testing escherichia coli, aspergillus flavus and candida, and determining bacteriostasis performance, referring to GB/T20944.3-2008 part 3 of evaluation of antibacterial performance of textiles: the results of the shaking method are shown in Table 1.
TABLE 1
As can be seen from the data in Table 1, the polymer nano biological filter element material prepared by the method has higher bacteriostatic rate, the bacteriostatic rate can be obviously improved after the nano titanium dioxide and the nano silicon dioxide are modified, meanwhile, the bacteriostatic rate can also be improved by coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material, and the bacteriostatic rate can be improved by the POE elastic composite material.
Test example 2
The polymer nano biological filter core materials prepared in examples 1-3 and comparative examples 1 and 2 are respectively tested for fracture strength and air permeability, the fracture strength refers to the requirements of GB/T24218.3-2010, the air permeability is tested, and the results refer to GB/T5453-1997 determination of textile fabric air permeability, which is shown in Table 2.
TABLE 2
As can be seen from the data in Table 2, the polymer nano biological filter core material prepared by the invention has higher breaking strength and air permeability, the breaking strength and the air permeability can be improved after the nano titanium dioxide and the nano silicon dioxide are modified, and the breaking strength and the air permeability can be improved by the POE elastic composite material.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A polymer nano biological filter element material is characterized by comprising the following raw materials in parts by weight: 1-4 parts of nano titanium dioxide, 1-4 parts of nano silicon dioxide, 50-100 parts of high-melt index polypropylene, 2-3 parts of electret master batch, 0.008-0.012 part of coupling agent, 0.01-0.03 part of polymer nano particle, 0.13-0.17 part of toughening agent, 0.008-0.012 part of antioxidant and 0.7-1.3 parts of POE elastic composite material.
2. The polymer nano biological filter element material according to claim 1, which is prepared from the following raw materials in parts by weight: 2.5 parts of nano titanium dioxide, 2.5 parts of nano silicon dioxide, 75 parts of high-melt index polypropylene, 2.5 parts of electret master batch, 0.01 part of coupling agent, 0.02 part of polymer nano particle, 0.15 part of toughening agent, 0.01 part of antioxidant and 1 part of POE elastic composite material.
3. The polymer nano biological filter element material according to claim 1 or 2, wherein the nano titanium dioxide has a particle size of 5-10nm, and the nano silicon dioxide has a particle size of 15-25 nm.
4. The polymer nano biological filter element material according to claim 1 or 2, wherein the melt index of the high-melt index polypropylene is not less than 1700.
5. The polymeric nano biological filter element material according to claim 1 or 2, wherein the coupling agent is a coupling agent ST-5, the polymeric nano particles are polyglycolide, and the antioxidant is pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
6. A preparation method of the polymer nanometer biological filter element material as claimed in any one of claims 1 to 5, characterized in that the method comprises the following steps:
(1) weighing the raw materials in parts by weight respectively for later use;
(2) modifying the nano silicon dioxide and the nano titanium dioxide: drying nano silicon dioxide and nano titanium dioxide, dissolving the dried nano silicon dioxide and nano titanium dioxide in toluene, adding a coupling agent, carrying out ultrasonic mixing oscillation, carrying out water bath reflux treatment, cleaning with absolute ethyl alcohol, carrying out suction filtration, and drying to obtain a modified mixture of nano silicon dioxide and nano titanium dioxide;
(3) uniformly mixing the modified mixture of the nano silicon dioxide and the nano titanium dioxide with the high-melt-index polypropylene, the electret master batch, the rest coupling agent, the polymer nano particles, the toughening agent, the antioxidant and the POE elastic composite material, and preparing the polypropylene melt-blown high-molecular polymer non-woven fabric by melt-blown non-woven forming equipment;
(4) performing electret treatment on the polypropylene melt-blown high-molecular polymer non-woven fabric to obtain a nano modified melt-blown non-woven fabric material;
(5) coating a layer of montmorillonite solution on the surface layer of the nano modified melt-blown non-woven fabric material to obtain the polymer nano biological filter element material.
7. The method for preparing a polymer nano biological filter element material according to claim 6, wherein the drying temperature of the nano silicon dioxide and the nano titanium dioxide in the step (2) is 100-140 ℃, and the time of ultrasonic mixing and oscillation is 20-45 min.
8. The preparation method of the polymer nano biological filter element material according to the claim 6, wherein the mass of the nano silicon dioxide and the nano titanium dioxide in the step (2) is 1-6% of the mass of the toluene, the volume of the coupling agent is 0.05-0.3% of the volume of the toluene, the water bath reflux temperature is preferably 85-105 ℃, the reflux time is preferably 150-180min, the water bath reflux temperature is more preferably 95 ℃, and the reflux time is 165 min.
9. The method for preparing a polymer nano biological filter element material according to claim 6, wherein the mass fraction of montmorillonite in the montmorillonite solution in the step (5) is 4-5%.
10. The use of the polymeric nanofabric material of any of claims 1-9, wherein the polymeric nanofabric material is used in surgical dressings for medical applications, hospital bed care pads, feminine care products for daily use, water works filters, medical and military joint patches, muscle key protection patches, military and police caps, helmets, knee, elbow, wrist wear, patch filters, military insoles, and underwear and men and women filters.
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