CN112522853A - Production method of self-sterilizing and self-disinfecting material - Google Patents

Production method of self-sterilizing and self-disinfecting material Download PDF

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Publication number
CN112522853A
CN112522853A CN202011464881.4A CN202011464881A CN112522853A CN 112522853 A CN112522853 A CN 112522853A CN 202011464881 A CN202011464881 A CN 202011464881A CN 112522853 A CN112522853 A CN 112522853A
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China
Prior art keywords
nano
self
copper
iodine
silver
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CN202011464881.4A
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Chinese (zh)
Inventor
刘小秦
李兴阳
王战义
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Fan Junge
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Fan Junge
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Priority to CN202011464881.4A priority Critical patent/CN112522853A/en
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    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
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    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/085—Copper
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

Abstract

A production method of a self-sterilizing and self-disinfecting material, which relates to the field of materials. The invention mainly aims to solve the problem that the existing sterilization material can not kill bacteria and viruses at the same time. And (3) placing the polymer slices, nano iodine and nano silver particles or nano copper particles into a screw extruder, stirring, mixing and melting. And preparing the produced molten mixture into non-woven fabric or fine-denier fiber cloth. Stirring, mixing and melting polymer slices and nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles in a screw extruder, or stirring, mixing and melting the polymer slices and the nano copper and nano iodine particles, or the polymer slices and the nano copper and nano silver particles, or the polymer slices and the nano copper particles in the screw extruder, and feeding the molten mixture from the screw extruder into a die to prepare the self-sterilizing and self-disinfecting plate. The material has the advantage of killing bacteria and viruses simultaneously.

Description

Production method of self-sterilizing and self-disinfecting material
The technical field is as follows:
the invention relates to the field of materials, in particular to a production method of a self-sterilizing and self-disinfecting material.
Background art:
the existing sterilization material has single function and narrow application range, and can not kill bacteria and viruses at the same time. In battlefield rescue and natural disaster emergency rescue, gauze and bandages of wounded personnel cannot be replaced in time due to environmental limitation, and wound infection is easily caused.
In the new coronavirus epidemic situation which is suddenly coming in this year, the risk of contact infection is only second to droplet infection. In order to effectively cope with the possible future epidemic situation of bacteria or viruses, the public environmental sanitation level needs to be improved comprehensively.
People with weak self-protection ability often become a breakthrough for epidemic situation pandemics. Therefore, the method has special significance for protecting susceptible people. If the binding material is self-sterilizing and self-disinfecting, the chance of infecting bacteria and viruses can be greatly reduced, the wound infection can be effectively prevented, and even the life can be saved. If the composition is applied to various public places, the composition is helpful to block contact transmission and prevent the large-scale spread of epidemic situations.
The invention content is as follows:
the invention aims to solve the technical problem of providing a production method of a self-sterilizing and self-disinfecting material which can meet the requirements of battlefield rescue and emergency rescue on related sanitary materials, and can improve the environmental sanitation level of public places and the capability of resisting epidemic situations.
The above object is achieved by:
a method for manufacturing self-sterilizing fine-denier fiber cloth or non-woven fabric comprises the following steps:
and (3) placing the polymer slices, nano iodine and nano silver particles or nano copper particles into a screw extruder, stirring, mixing and melting. The polymer slices are polypropylene slices, polyvinyl chloride slices, polyamide slices or polybutylene terephthalate slices, the polymer slices are all common commercial products, and the nano iodine and nano silver particles or nano copper particles are prepared by an ultrasonic method.
The melt mixture produced by the screw extruder is made into non-woven fabric by the existing method, or fine denier fiber cloth with monofilament diameter of 10-30 Tet is made by the existing mature melt spinning method.
The residence time of the polymer slices and the nano iodine, nano silver particles or nano copper particles in the screw extruder is 25-40 minutes, (nano iodine + nano silver)/(nano iodine + nano silver + polymer slices) =10-27% (wt); or nano copper/(nano copper + polymer chip) =10-27% (wt).
Wherein the mass ratio of the nano iodine to the nano silver is (1-10): 1, or the mass ratio of the nano iodine to the nano silver is 1: (1-10).
The preparation method of the nano iodine and nano silver particles or nano copper particles comprises the following steps: respectively grinding iodine powder and silver blocks or copper scraps in a high-speed grinding machine, respectively grinding the iodine powder and the silver blocks into millimeter or micron-sized particles by adopting a grinding tool with Boron Nitride (BN) particles lined on the surface, and then crushing the particles into nano-sized particles by using an ultrasonic crusher with the frequency of 35-50MHZ, wherein the particle size of the nano-sized particles is 5-40 nanometers.
The prepared non-woven fabric is particularly suitable for gauze, bandage, medical mask and the like for bandaging, and plays an active and important role in battlefield rescue and natural disaster rescue. The surface of the non-woven fabric is rich in nano silver and nano iodine particles or nano copper, so that bacteria and viruses can be killed, sterility is realized, and the non-woven fabric can be automatically kept clean for a long time.
The prepared fine denier fiber cloth is used for medical protective clothing, can obtain the protective effect of zero penetration of bacteria and viruses, is light, breathable and comfortable to wear, and has great advantages compared with the traditional protective clothing, such as heaviness, sultriness and impermeability.
Secondly, a manufacturing method of the self-sterilization and self-disinfection plate or wire;
and (3) stirring, mixing and melting the polymer slices, nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles in a screw extruder. The polymer slice and the nano iodine, nano silver, nano copper, nano aluminum and nano zinc stay in the screw extruder for 30-60 minutes. The molten mixture from the screw extruder is fed into a die made of conventional stainless steel (e.g., 304 or 316L) or conventional engineering plastic (e.g., nylon, polyvinyl chloride) to form self-sterilizing, self-sterilizing sheets and strands or other shaped materials.
The molten mixture from the screw extruder may be sprayed by plasma spraying onto the surface of desk, chair, counter, elevator, shopping cart, body building equipment, recreation facility, etc. to reach self-sterilizing and disinfecting function for long period.
The polymer slice is high-density linear polyethylene or polyvinyl chloride or polytetrafluoroethylene or polyamide or polycarbonate or polymethyl methacrylate or poly (m) terephthalic acid p- (m) phenylenediamine slice.
(nano iodine + nano silver + nano copper + nano aluminum + nano zinc)/(nano iodine + nano silver + nano copper + nano aluminum + nano zinc + polymer slice) =10-35% (wt);
the mass ratio of each substance is as follows:
nano iodine: nano silver = (1-5): (1-5), namely nano iodine: nano silver = (1-5): 1; or nano iodine: nano silver =1: (1-5);
(nano iodine + nano silver): (nano copper + nano aluminum + nano zinc) = (10-20): 1;
nano copper: nano aluminum: nano zinc =1:1: 1; the mass ratio of the nano copper, the nano aluminum and the nano zinc can be any ratio.
The preparation method of the nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles comprises the following steps: respectively grinding iodine powder, silver blocks, copper scraps, aluminum blocks and zinc blocks in a high-speed grinding machine, respectively grinding the five substances into millimeter or micron-sized particles by adopting a grinding tool with Boron Nitride (BN) particles lined on the surface, and then crushing the millimeter or micron-sized particles into nano-sized particles by using an ultrasonic crusher with the frequency of 35-50MHZ, wherein the particle size of the nano-sized particles is 5-40 nanometers.
And (3) stirring, mixing and melting the polymer slices and the nano-copper and nano-iodine particles, or the polymer slices and the nano-copper and nano-silver particles, or the polymer slices and the nano-copper particles in a screw extruder. The residence time of the polymer chips and the nanoparticles in the screw extruder is 30-60 minutes. The molten mixture from the screw extruder is fed into a die made of a common stainless steel (e.g., 304 or 316L) or common engineering plastic (e.g., nylon, polyvinyl chloride) to form a self-sterilizing, self-sterilizing sheet, strand or other shaped material.
The polymer slice is high-density linear polyethylene, or polyvinyl chloride, or polytetrafluoroethylene, or polyamide, or polycarbonate, or polymethyl methacrylate, or poly (m) -p- (m) -phenylenediamine terephthalate slice.
The mass ratio of each substance is as follows:
(nano copper + nano iodine)/(nano copper + nano iodine + polymer chip) =10-45% (wt);
(nano copper + nano silver)/(nano copper + nano silver + polymer chip) =10-45% (wt);
nano copper/(nano copper + polymer slice) =15-45% (wt);
nano copper: nano iodine = 100: (10-25);
nano copper: nano silver = 100: (10-25);
the preparation method of the nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles comprises the following steps: respectively grinding iodine powder, silver blocks, copper scraps, aluminum blocks and zinc blocks in a high-speed grinding machine, respectively grinding the five substances into millimeter or micron-sized particles by adopting a grinding tool with a Boron Nitride (BN) particle lining on the surface, and then crushing the millimeter or micron-sized particles into nano-sized particles by using ultrasonic waves with the frequency of 35-50MHZ, wherein the particle size of the nano-sized particles is 5-40 nanometers.
The self-sterilizing and self-disinfecting plate or wire obtained by the method can be used for manufacturing shells of electrical appliances such as computers, televisions and the like, keyboards, mobile phone shells, various furniture, counters, toilet sanitary wares and the like, and the appearance of the appliances has the functions of self-sterilizing and self-disinfecting for a long time.
The invention has the advantages that: the material can kill bacteria and viruses at the same time; the material can be made into self-sterilizing and self-disinfecting cloth, or plates and wires, or can be applied to places such as hospitals, schools, kindergartens, restaurants, markets, entertainment places, vehicles, office buildings, vegetable markets, parks, banks, public toilets and the like in a plasma spraying mode, and is helpful for blocking contact propagation and preventing large-scale spreading of epidemic situations. The medical protective clothing made of the material has the characteristics of comfort, ventilation, good protective effect, superior human body experience effect and the like, can effectively avoid the defects of sultriness, heaviness, air impermeability and the like of the existing protective clothing, lightens the physical and mental burdens of medical workers, and is particularly suitable for high-risk infection environments. The material has low cost and convenient application.
If the self-sterilizing and self-disinfecting material coating is not damaged by human, the self-sterilizing and self-disinfecting function can be realized within 1 to 2 years, various appliances made of self-sterilizing and self-disinfecting plates or wires can have the self-sterilizing and self-disinfecting function within 2 to 3 years, and non-woven fabrics and fine denier fiber cloth made of the self-sterilizing and self-disinfecting materials can be repeatedly cleaned and used, and the self-sterilizing and self-disinfecting function can be maintained within 2 to 3 years.
The specific implementation mode is as follows:
a method for manufacturing self-sterilizing fine-denier fiber cloth or non-woven fabric comprises the following steps:
and (3) placing the polymer slices, nano iodine and nano silver particles or nano copper particles into a screw extruder, stirring, mixing and melting. The polymer slices are polypropylene slices, polyvinyl chloride slices, polyamide slices or polybutylene terephthalate slices, the polymer slices are all common commercial products, and the nano iodine and nano silver particles or nano copper particles are prepared by an ultrasonic method.
The melt mixture produced by the screw extruder is made into non-woven fabric by the existing method, or fine denier fiber cloth with monofilament diameter of 10-30 Tet is made by the existing mature melt spinning method.
The residence time of the polymer slices and the nano iodine, nano silver particles or nano copper particles in the screw extruder is 25-40 minutes, (nano iodine + nano silver)/(nano iodine + nano silver + polymer slices) =10-27% (wt); or nano copper/(nano copper + polymer chip) =10-27% (wt).
Wherein the mass ratio of the nano iodine to the nano silver is (1-10): 1, or the mass ratio of the nano iodine to the nano silver is 1: (1-10).
The preparation method of the nano iodine, nano silver particles and nano copper particles comprises the following steps: respectively grinding iodine powder and silver blocks or copper scraps in a high-speed grinding machine, respectively grinding the iodine powder and the silver blocks into millimeter or micron-sized particles by adopting a grinding tool with Boron Nitride (BN) particles lined on the surface, and then crushing the particles into nano-sized particles by using an ultrasonic crusher with the frequency of 35-50MHZ, wherein the particle size of the nano-sized particles is 5-40 nanometers.
The prepared non-woven fabric is particularly suitable for gauze, bandage, medical mask and the like for bandaging, and plays an active and important role in battlefield rescue and natural disaster rescue. The surface of the non-woven fabric is rich in nano silver and nano iodine particles or nano copper, so that bacteria and viruses can be killed, sterility is realized, and the non-woven fabric can be automatically kept clean for a long time.
The prepared fine denier fiber cloth is used for medical protective clothing, can obtain the protective effect of zero penetration of bacteria and viruses, is light, breathable and comfortable to wear, and has great advantages compared with the traditional protective clothing, such as heaviness, sultriness and impermeability.
Secondly, a manufacturing method of the self-sterilization and self-disinfection plate or wire;
and (3) stirring, mixing and melting the polymer slices, nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles in a screw extruder. The polymer slice and the nano iodine, nano silver, nano copper, nano aluminum and nano zinc stay in the screw extruder for 30-60 minutes. The molten mixture from the screw extruder is fed into a die made of conventional stainless steel (e.g., 304 or 316L) or conventional engineering plastic (e.g., nylon, polyvinyl chloride) to form self-sterilizing, self-sterilizing sheets and strands or other shaped materials.
The molten mixture from the screw extruder may be sprayed by plasma spraying onto the surface of desk, chair, counter, elevator, shopping cart, body building equipment, recreation facility, etc. to reach self-sterilizing and disinfecting function for long period.
The polymer slice is high-density linear polyethylene or polyvinyl chloride or polytetrafluoroethylene or polyamide or polycarbonate or polymethyl methacrylate or poly (m) terephthalic acid p- (m) phenylenediamine slice.
(nano iodine + nano silver + nano copper + nano aluminum + nano zinc)/(nano iodine + nano silver + nano copper + nano aluminum + nano zinc + polymer slice) =10-35% (wt);
the mass ratio of each substance is as follows:
nano iodine: nano silver = (1-5): (1-5), namely nano iodine: nano silver = (1-5): 1; or nano iodine: nano silver =1: (1-5);
(nano iodine + nano silver): (nano copper + nano aluminum + nano zinc) = (10-20): 1;
nano copper: nano aluminum: nano zinc =1:1: 1; the mass ratio of the nano copper, the nano aluminum and the nano zinc can be any ratio.
The preparation method of the nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles comprises the following steps: respectively grinding iodine powder, silver blocks, copper scraps, aluminum blocks and zinc blocks in a high-speed grinding machine, respectively grinding the five substances into millimeter or micron-sized particles by adopting a grinding tool with Boron Nitride (BN) particles lined on the surface, and then crushing the millimeter or micron-sized particles into nano-sized particles by using an ultrasonic crusher with the frequency of 35-50MHZ, wherein the particle size of the nano-sized particles is 5-40 nanometers.
And (3) stirring, mixing and melting the polymer slices and the nano-copper and nano-iodine particles, or the polymer slices and the nano-copper and nano-silver particles, or the polymer slices and the nano-copper particles in a screw extruder. The residence time of the polymer chips and the nanoparticles in the screw extruder is 30-60 minutes. The molten mixture from the screw extruder is fed into a die made of a common stainless steel (e.g., 304 or 316L) or common engineering plastic (e.g., nylon, polyvinyl chloride) to form a self-sterilizing, self-sterilizing sheet, strand or other shaped material.
The polymer slice is high-density linear polyethylene, or polyvinyl chloride, or polytetrafluoroethylene, or polyamide, or polycarbonate, or polymethyl methacrylate, or poly (m) -p- (m) -phenylenediamine terephthalate slice.
The mass ratio of each substance is as follows:
(nano copper + nano iodine)/(nano copper + nano iodine + polymer chip) =10-45% (wt);
(nano copper + nano silver)/(nano copper + nano silver + polymer chip) =10-45% (wt);
nano copper/(nano copper + polymer slice) =15-45% (wt);
nano copper: nano iodine = 100: (10-25);
nano copper: nano silver = 100: (10-25);
the preparation method of the nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles comprises the following steps: respectively grinding iodine powder, silver blocks, copper scraps, aluminum blocks and zinc blocks in a high-speed grinding machine, respectively grinding the five substances into millimeter or micron-sized particles by adopting a grinding tool with a Boron Nitride (BN) particle lining on the surface, and then crushing the millimeter or micron-sized particles into nano-sized particles by using ultrasonic waves with the frequency of 35-50MHZ, wherein the particle size of the nano-sized particles is 5-40 nanometers.
The self-sterilizing and self-disinfecting plate or wire obtained by the method can be used for manufacturing shells of electrical appliances such as computers, televisions and the like, keyboards, mobile phone shells, various furniture, counters, toilet sanitary wares and the like, and the appearance of the appliances has the functions of self-sterilizing and self-disinfecting for a long time.

Claims (10)

1. A production method of a self-sterilization and self-disinfection material is characterized by comprising the following steps: putting the polymer slices and nano iodine and nano silver particles or nano copper particles into a screw extruder, stirring, mixing and melting; the melt mixture produced by the screw extruder is made into non-woven fabric by the existing method, or fine denier fiber cloth is made by the existing mature melt spinning method.
2. The method for producing a self-sterilizing, self-disinfecting material according to claim 1, wherein: the polymer slice is a polypropylene slice, a polyvinyl chloride slice, a polyamide slice or a polybutylene terephthalate slice.
3. A method for producing a self-sterilizing, self-disinfecting material according to claim 1 or 2, characterized in that: (nano iodine + nano silver)/(nano iodine + nano silver + polymer chip) =10-27% (wt); or nano copper/(nano copper + polymer slice) =10-27% (wt);
wherein the mass ratio of the nano iodine to the nano silver is (1-10): 1, or the mass ratio of the nano iodine to the nano silver is 1: (1-10).
4. A method for producing a self-sterilizing, self-disinfecting material according to claim 1 or 3, characterized in that: the preparation method of the nano iodine and nano silver particles or nano copper particles comprises the following steps: respectively grinding iodine powder and silver blocks or copper scraps in a high-speed grinding machine, respectively grinding the iodine powder and the silver blocks into millimeter or micron-sized particles by adopting a grinding tool with Boron Nitride (BN) particles lined on the surface, and then crushing the particles into nano-sized particles by using an ultrasonic crusher.
5. A production method of a self-sterilization and self-disinfection material is characterized by comprising the following steps: stirring, mixing and melting polymer slices, nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles in a screw extruder; the molten mixture from the screw extruder is fed into a mold made of common stainless steel or common engineering plastics to form self-sterilizing, self-disinfecting sheets and strands and other shaped materials, or plasma sprayed onto the surfaces of objects such as desks, chairs, elevators, shopping carts, fitness equipment, entertainment facilities, etc. in public places.
6. The method for producing a self-sterilizing, self-disinfecting material according to claim 5, wherein: the polymer slice is high-density linear polyethylene or polyvinyl chloride or polytetrafluoroethylene or polyamide or polycarbonate or polymethyl methacrylate or poly (m) terephthalic acid p- (m) phenylenediamine slice.
7. The method for producing a self-sterilizing, self-disinfecting material according to claim 5, wherein: the polymer slices and the nano iodine, nano silver, nano copper, nano aluminum and nano zinc stay in the screw extruder for 30-60 minutes;
(nano iodine + nano silver + nano copper + nano aluminum + nano zinc)/(nano iodine + nano silver + nano copper + nano aluminum + nano zinc + polymer slice) =10-35% (wt);
the mass ratio of each substance is as follows:
nano iodine: nano silver = (1-5): (1-5), namely nano iodine: nano silver = (1-5): 1; or nano iodine: nano silver =1: (1-5);
(nano iodine + nano silver): (nano copper + nano aluminum + nano zinc) = (10-20): 1;
nano copper: nano aluminum: nano zinc =1:1: 1; the mass ratio of the nano copper, the nano aluminum and the nano zinc can be any ratio.
8. The method for producing a self-sterilizing, self-disinfecting material according to claim 5, wherein: the preparation method of the nano iodine, nano silver, nano copper, nano aluminum and nano zinc particles comprises the following steps: respectively grinding iodine powder, silver blocks, copper scraps, aluminum blocks and zinc blocks in a high-speed grinding machine, respectively grinding the five substances into millimeter or micron-sized particles by adopting a grinding tool with Boron Nitride (BN) particles lined on the surface, and then crushing the millimeter or micron-sized particles into nano-sized particles by using an ultrasonic crusher.
9. A production method of a self-sterilization and self-disinfection material is characterized by comprising the following steps: stirring, mixing and melting polymer slices and nano-copper and nano-iodine particles, or polymer slices and nano-copper and nano-silver particles, or polymer slices and nano-copper particles in a screw extruder; the molten mixture from the screw extruder is fed into a mold made of common stainless steel or common engineering plastics to form a self-sterilizing, self-disinfecting sheet, strand or other shaped material; or spraying the plasma spraying method on the surfaces of objects such as tables and chairs, counters, elevators, shopping carts, various containers, fitness equipment, entertainment facilities, public telephones, public toilets, public drinking water machines, door handles, bank teller machines and the like in public places.
10. The method for producing a self-sterilizing, self-disinfecting material according to claim 9, wherein: the polymer slice is a slice of high-density linear polyethylene, or polyvinyl chloride, or polytetrafluoroethylene, or polyamide, or polycarbonate, or polymethyl methacrylate, or poly (m) terephthalic acid p- (m) phenylenediamine;
the mass ratio of each substance is as follows:
(nano copper + nano iodine)/(nano copper + nano iodine + polymer chip) =10-45% (wt);
(nano copper + nano silver)/(nano copper + nano silver + polymer chip) =10-45% (wt);
nano copper/(nano copper + polymer slice) =15-45% (wt);
nano copper: nano iodine = 100: (10-25);
nano copper: nano silver = 100: (10-25).
CN202011464881.4A 2020-12-14 2020-12-14 Production method of self-sterilizing and self-disinfecting material Pending CN112522853A (en)

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