CN113388915A - Safe cool medical operating coat based on nano-composite and preparation method thereof - Google Patents
Safe cool medical operating coat based on nano-composite and preparation method thereof Download PDFInfo
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- CN113388915A CN113388915A CN202110662108.7A CN202110662108A CN113388915A CN 113388915 A CN113388915 A CN 113388915A CN 202110662108 A CN202110662108 A CN 202110662108A CN 113388915 A CN113388915 A CN 113388915A
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Abstract
The invention belongs to the technical field of medical functional textiles, and discloses a safe cool medical operating coat based on nano-composite and a preparation method thereof. The medical surgical gown is prepared from the following raw materials in parts by mass: 15-40 parts of functional master batch, 60-85 parts of polyethylene terephthalate resin slices and 0.5-5 parts of conductive fibers; the functional master batch is prepared from the following raw materials: polybutylene terephthalate resin, a nano cool additive, a nano antibacterial additive, nano bentonite, a surface modifier, an antioxidant, a heat stabilizer, a dispersant, a lubricant and a modifier. The medical operating coat has the functions of antibiosis, antivirus, cool feeling, antistatic, seepage prevention and separation, and the like, can still keep various functional effects after being washed for more than 50 times, and can be repeatedly used.
Description
Technical Field
The invention relates to the technical field of medical functional textiles, in particular to a safe cool medical operating coat based on nano-composite and a preparation method thereof.
Background
The operating coat is used as a necessary protective garment in the operation process, is used for reducing the risk of medical staff contacting pathogenic microorganisms, can also reduce the risk of pathogenic microorganisms spreading between the medical staff and a patient, and is a safety barrier of an aseptic area in the operation.
Currently, the categories of surgical gowns mainly include:
1. the all-cotton operating gown is the operating gown which is most widely applied in medical institutions and has the strongest dependence, and although the all-cotton operating gown has good air permeability, the barrier protection function is poor. The cotton material is easy to fall off, so that the maintenance cost of the ventilation equipment of hospitals every year has no small burden, and the cotton material is often a good habitat of microorganisms and becomes an important spreading source of diseases.
2. The high-density polyester fiber fabric mainly takes polyester fiber as a main material, and a conductive substance is embedded in the surface of the fabric, so that the fabric has the advantages of certain antistatic effect and certain hydrophobicity, cotton fibre is not easy to be removed, and the reuse rate is high. But is stuffy and uncomfortable for the wearer.
3. The PE (polyethylene), TPU (thermoplastic polyurethane elastomer) and PTFE (polytetrafluoroethylene) multilayer laminated film composite operating coat has excellent protective performance and can effectively prevent blood, bacteria and even viruses from penetrating. But is also hot and stuffy, and the comfort of the wearer is poor, so the popularity in China is not very wide.
4. Disposable operating gowns:
compared with the traditional cotton cloth operating gown, the disposable operating gown made of polypropylene (PP) spun-bonded cloth is low in price and has the advantages of certain antibacterial property, certain antistatic property and the like, so that the disposable operating gown can be used as a material of the disposable operating gown, but the antistatic pressure of the material is lower, and the blocking effect on viruses is poor.
The disposable operating gown made of the composite non-woven fabric is a high-quality product of a novel composite material, and the material has high hydrostatic pressure resistance after being subjected to three-resistance (alcohol resistance, blood resistance, oil resistance), antistatic property, antibacterial property and the like, is widely applied at home and abroad, and is commonly used for making high-grade operating gowns.
The polyester fiber and wood pulp composite spunlace fabric is generally only used as a material of disposable operating gowns.
However, the disposable operating coat is disposable, is relatively wasteful and is not in accordance with the current green environmental protection concept.
In 2019, 30 months 7, YY/T0506.8-2019, part 8 of surgical drapes, surgical gowns and cleaning clothes for patients, medical staff and instruments are issued by the State drug administration general administration: the series standards of the special requirements of products, etc., are implemented from 8 months and 1 day in 2020; from the product standard and the industry category, the medical protective product is defined in a clear specification.
While efforts have been made to protect the surgical incision of a patient from infection, there is no much attention paid to the need for self-protection of medical personnel, and as the awareness of protection has increased, surgical gowns are becoming more and more aware of the need to effectively block the extravasation of body fluids and irrigation fluids from the patient in addition to protecting the surgical incision from infection. In the operation process, blood, urine, saliva, ascites, intracavity flushing fluid and the like containing pathogenic bacteria permeate into the body of an operator through the cotton cloth operating gown, sweat of a doctor can permeate into the incision of the patient through the cotton cloth operating gown to cause cross infection between the patient and medical care personnel, and the operating gown prevents the cross infection in the operation process and plays a vital two-way protection role.
The performance of the surgical gown mainly comprises: protective properties, comfort properties and sufficient strength. The protective property is the most important performance requirement of the surgical gown material, and mainly comprises liquid barrier, microorganism barrier and barrier to particulate matters.
Repeated use of the gown requires washing, which can cause cross-spread and infection of different pathogens. Meanwhile, the washing equipment is in a wet state for a long time, so that the washing equipment is very suitable for breeding and propagating germs, and becomes a secondary germ pollution source. The washed operating coat can generate secondary pollution due to the contact with the environment or the bacteria breeding on the packaged articles in the processes of storage and transportation. The disinfection is carried out in the washing process, so that the secondary pollution in the storage and transportation processes after washing cannot be solved, and the germ transmission and breeding of personnel in the use process cannot be solved. Therefore, studies on the necessity of applying antibacterial techniques and products to hospitals, the application range in hospitals, the applicability in hospitals, and the like must be intensively conducted.
The antibacterial textile can avoid cross infection caused by shuffling of different articles in the washing process and secondary pollution after washing; the washed article can be kept sanitary for a long time in the using process, and the infection to a user caused by the fact that germs carried by people are left on the article and breed is avoided. The antibacterial fiber is generally formed by introducing a substance capable of inhibiting the growth of bacteria to the surface or the inside of the fiber by a physical or chemical method, and the antibacterial agent not only can not easily fall off on the fiber, but also can keep a lasting antibacterial effect by balanced diffusion in the fiber.
Meanwhile, when medical staff select the operating gown in the medical rescue work, the air permeability and the comfort of the product cannot be ignored on the premise of considering the performance of the operating gown. Particularly, in order to achieve the required protective effect, the protective clothing fabric is usually subjected to lamination or film coating treatment, and is often heavy and poor in air permeability and moisture permeability. Medical personnel wear for a long time, and the health can produce a large amount of heats, if can not in time discharge, can increase its dysphoria and feel, influence work efficiency and healthy.
Only the comfort of wearing of the operating coat improves, and operation that can be better is operated to other medical staff in surgeon and operating room, improves operation efficiency, reduces misoperation risk. If the operating coat is uncomfortable to wear, the quality of the operating coat can be influenced, if the operating coat is poor in ventilation and heat dissipation, medical personnel can sweat easily during the operation, and the sweat of the medical personnel can pollute the ground or a patient easily to cause bacterial infection of the patient. The mesh cloth is mainly added to the inner layer of the existing surgical gown or other measures on the structure of the garment are taken, so that medical workers can not attach to the surgical gown and increase the ventilation and heat dissipation performance.
In addition, the surgical gown must ensure sufficient strength during wearing and use, otherwise, it may be stretched and damaged; if worn during surgery, they are sometimes punctured by sharp objects such as needles and scissors, which provide a path for the transmission of bacteria and viruses, greatly impairing the protection of the material, exposing the medical staff and the patient to an environment that may be invaded by germs, increasing the chance of infection.
Disclosure of Invention
The invention aims to provide a safe cool medical operating coat based on nano-composite, which can be repeatedly used and has the functions of antibiosis, antivirus, cool feeling, static resistance, seepage prevention, obstruction and the like.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a safe cool medical operating coat based on nano-composite, which is prepared from the following raw materials in parts by mass: 15-40 parts of functional master batch, 60-85 parts of polyethylene terephthalate resin slices and 0.5-5 parts of conductive fibers.
Preferably, in the nanocomposite-based safe cool medical operating gown, the functional master batch is prepared from the following raw materials in parts by mass:
55-70 parts of polybutylene terephthalate resin, 5-30 parts of a cooling additive, 5-20 parts of an antibacterial additive, 5-20 parts of bentonite, 0.1-2 parts of a surface modifier, 0.1-0.5 part of an antioxidant, 0.1-0.3 part of a heat stabilizer, 0.5-2 parts of a dispersant, 0.3-1 part of a lubricant and 1-5 parts of a modifier.
Preferably, in the nanocomposite-based safe cool medical surgical gown, the polybutylene terephthalate resin is fiber-grade polybutylene terephthalate (PBT) having an intrinsic viscosity of 0.95 to 1.0.
Preferably, in the safe cool medical operating coat based on nano-composite, the cool additive is one or two of nano jade powder and nano mica powder, and the particle size is less than 100 nm.
Preferably, in the safe cool medical operating gown based on the nano-composite, the antibacterial additive is a nano zirconium phosphate silver-loaded antibacterial agent.
Preferably, in the nanocomposite-based safe cool medical surgical gown, the particle size of the bentonite is less than 100 nm.
Preferably, in the nanocomposite-based safe cool-feeling medical operating gown, the surface modifier is one or more of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, methacryloxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, isopropyldioleate acyloxy (dioctylphosphate) titanate, pyrophosphoric monoalkoxy titanate, isopropyltris (dioctylphosphate) titanate, isopropyl tristearate titanate, bis (dioctyloxypyrophosphate) ethylene titanate, tetraisopropylbis (dioctylphosphite) titanate and distearoyloxyisopropoxy aluminate.
Preferably, in the nanocomposite-based safe cool-feeling medical operating gown, the antioxidant is one or more of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (antioxidant 1010), tris [2, 4-di-tert-butylphenyl ] phosphite ] (antioxidant 168), N-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1076) and N, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine (antioxidant 1098).
Preferably, in the safe cool medical operating coat based on nano-composite, the heat stabilizer is one or more of tricresyl phosphate, triphenyl phosphite and triphenyl phosphate.
Preferably, in the nanocomposite-based safe cool medical operating coat, the dispersant is one or more of ethylene-vinyl acetate copolymer wax, polypropylene wax and polyethylene wax; the average molecular weight of the dispersant is 2000-5000.
Preferably, in the nanocomposite-based safe cool medical surgical gown, the lubricant is one or more of N, N-ethylene bis stearamide, polysiloxane, pentaerythritol stearate, stearic acid amide, erucamide, zinc stearate and calcium stearate.
Preferably, in the nanocomposite-based safe cool medical surgical gown, the modifier is an ethylene-vinyl acetate copolymer or a maleic anhydride grafted ethylene-octene copolymer.
The invention also provides a preparation method of the safe cool medical operating coat based on nano-composite, which comprises the following steps:
(1) pre-crystallizing polyethylene terephthalate resin slices at the temperature of 120-140 ℃ for 60-120 min, mixing with the functional master batch, and performing vacuum drying at the temperature of 120-140 ℃ for 12-14 h to obtain a mixed material;
(2) carrying out melt spinning on the mixed material obtained in the step (1) to obtain functionalized polyester fiber;
(3) mixing the functionalized polyester fiber obtained in the step (2) with conductive fiber, and knitting or weaving to obtain a functionalized polyester fabric;
(4) and (4) performing anti-seepage blocking finishing on the functionalized polyester fabric in the step (3), and then preparing the functionalized surgical gown according to the standard requirement to obtain the nano composite safe cool medical surgical gown.
Preferably, in the preparation method of the safe cool medical operating gown based on the nano composite, the temperature of the melt spinning in the step (2) is 275-293 ℃.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the medical operating gown has the functions of antibiosis, antivirus, cool feeling, static resistance, seepage prevention and separation and the like, can still keep various functional effects after being washed for more than 50 times, and can be repeatedly used.
(2) The surface modifier is adopted to carry out surface modification on the multifunctional additive, and an organic modified layer is formed by mutual matching and synergistic action on structure and performance by utilizing an interface induction theory and a regulation and control technology, so that multidentate enhanced chemical bonding is formed on the surface of a single functional additive, the surface of the multifunctional additive is organized, the miscibility between a polybutylene terephthalate resin (PBT resin) molecular chain and inorganic mineral powder is achieved, and the multifunctional additive can be uniformly dispersed in the PBT resin; the agglomeration phenomenon of the powder is prevented; the affinity between the multifunctional additive and the PBT resin polymer is improved, and the dispersibility of the multifunctional additive is improved; thereby improving the fiber forming performance of the fiber and maintaining good spinnability.
(3) The nano bentonite used in the invention has hydrophobic surface after surface modification, and increases infiltration and bonding effects with polymer matrixes, so that high molecular polymer chain segments and multifunctional additives can easily enter between sheet layers of the bentonite, and can become composite materials on a nano scale, and the dispersibility of the multifunctional additives is more effectively improved.
(4) The modifier used in the invention has higher melt strength, can play a toughening role in a high molecular polymer and additive blending system, and improves the spinnability of the fiber and the flexibility of the fabric.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a SEM photograph showing a cross-section of a functionalized polyester fiber obtained in step (2) of example 1 of the present invention.
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.
The invention provides a safe cool medical operating coat based on nano-composite, which is prepared from the following raw materials in parts by mass: 15-40 parts of functional master batch, 60-85 parts of polyethylene terephthalate resin slices and 0.5-5 parts of conductive fibers.
Preferably, in the nanocomposite-based safe cool medical operating gown, the functional master batch is prepared from the following raw materials in parts by mass:
55-70 parts of polybutylene terephthalate resin, 5-30 parts of a cooling additive, 5-20 parts of an antibacterial additive, 5-20 parts of bentonite, 0.1-2 parts of a surface modifier, 0.1-0.5 part of an antioxidant, 0.1-0.3 part of a heat stabilizer, 0.5-2 parts of a dispersant, 0.3-1 part of a lubricant and 1-5 parts of a modifier.
Further preferably, the preparation method of the functional master batch comprises the following steps: placing the cool additive, the antibacterial additive and the bentonite into a high-speed mixer with a jacket heating device, stirring, raising the temperature to 100-110 ℃, stirring for 5-10 min, and drying; then adding a surface modifier, keeping the temperature at 100-110 ℃, stirring for 5-10 min, and performing surface modification treatment; adding a dispersing agent, keeping the temperature at 100-110 ℃, stirring for 3-10 min, and performing pre-dispersion treatment; finally, adding polybutylene terephthalate resin, an antioxidant, a heat stabilizer, a lubricant and a modifier, stirring for 2-10 min, feeding into a double-screw extruder, and plasticizing, mixing, extruding, bracing, cooling and granulating; the process conditions of the double-screw extruder are as follows: temperature: 215-230 ℃, screw rotation speed: 200-500 rpm.
Preferably, in the nanocomposite-based safe cool medical surgical gown, the viscosity of the polybutylene terephthalate resin is 0.95 to 1.0.
Preferably, in the safe cool medical operating coat based on nano-composite, the cool additive is one or two of nano jade powder and nano mica powder, and the particle size is less than 100 nm.
Preferably, in the safe cool medical operating coat based on nano-composite, the antibacterial additive is a nano-zirconium phosphate silver-loaded antibacterial agent.
Preferably, in the nanocomposite-based medical gown with a safe cool feeling, the particle size of bentonite is less than 100 nm.
Preferably, in the nanocomposite-based safe cool-feeling medical operating gown, the surface modifier is one or more of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, methacryloxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, isopropyldioleate acyloxy (dioctylphosphate) titanate, pyrophosphoric monoalkoxy titanate, isopropyltris (dioctylphosphate) titanate, isopropyl tristearate, bis (dioctyloxypyrophosphate) ethylene titanate, tetraisopropylbis (dioctylphosphite) titanate and distearoyloxyisopropoxy aluminate.
Preferably, in the nanocomposite-based safe cool-feeling medical operating gown, the antioxidant is one or more of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (antioxidant 1010), tris [2, 4-di-tert-butylphenyl ] phosphite ] (antioxidant 168), N-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1076) and N, N' -bis- (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexanediamine (antioxidant 1098).
Preferably, in the safe and cool medical operating coat based on the nano-composite, the heat stabilizer is one or more of tricresyl phosphate, triphenyl phosphite and triphenyl phosphate.
Preferably, in the safe cool medical operating coat based on nano-composite, the dispersing agent is one or more of ethylene-vinyl acetate copolymer wax, polypropylene wax and polyethylene wax; the dispersing agent is a low molecular weight dispersing agent, and the average molecular weight is 2000-5000.
Preferably, in the nanocomposite-based safe cool medical surgical gown, the lubricant is one or more of N, N-ethylene bis stearamide, polysiloxane, pentaerythritol stearate, stearic acid amide, erucic acid amide, zinc stearate and calcium stearate.
Preferably, in the nanocomposite-based safe cool medical surgical gown, the modifier is an ethylene-vinyl acetate copolymer or a maleic anhydride grafted ethylene-octene copolymer.
The invention also provides a preparation method of the safe cool medical operating coat based on nano-composite, which comprises the following steps:
(1) pre-crystallizing polyethylene terephthalate resin slices at the pre-crystallization temperature of 120-140 ℃ for 60-120 min, mixing with the functional master batch, and performing vacuum drying at the temperature of 120-140 ℃ for 12-14 h to obtain a mixed material;
(2) carrying out melt spinning on the mixed material obtained in the step (1) at 275-293 ℃ to obtain functionalized polyester fiber;
(3) mixing the functionalized polyester fiber obtained in the step (2) with conductive fiber, and knitting or weaving to obtain a functionalized polyester fabric;
(4) and (4) performing anti-seepage blocking finishing on the functionalized polyester fabric obtained in the step (3), and then preparing the functionalized surgical gown according to the standard requirements to obtain the nano composite safe cool medical surgical gown.
The functionalized fabric of the invention can be used for preparing other medical fabrics in hospitals besides medical surgical gowns, such as medical fabrics for patients: such as clothing, bed sheets, sheet covers, mattresses, bedding, pillow cases, curtains, tablecloths, surgical towels, carpets, etc.; medical fabrics for medical personnel: work clothes, medical dressing, masks and the like.
Example 1
The invention provides a composition and a preparation method of a functional master batch;
the functional master batch is prepared from the following raw materials in parts by mass: 60 parts of polybutylene terephthalate resin, 20 parts of nano jade powder, 6 parts of nano zirconium phosphate silver-loaded antibacterial agent, 5 parts of nano bentonite, 0.5 part of gamma-aminopropyltriethoxysilane, 10100.25 parts of antioxidant, 1680.25 parts of antioxidant, 0.1 part of tricresyl phosphate, 1.5 parts of ethylene-vinyl acetate copolymer wax, 0.4 part of N, N-ethylene bis stearamide and 2 parts of ethylene-vinyl acetate copolymer;
placing the nano jade powder, the nano zirconium phosphate silver-carrying antibacterial agent and the nano bentonite in a high-speed mixer with a jacket heating device, stirring, raising the temperature to 100 ℃, stirring for 5min, and drying; then adding gamma-aminopropyltriethoxysilane, keeping the temperature at 100 ℃, stirring for 5min, and carrying out surface modification treatment; adding ethylene-vinyl acetate copolymer wax, keeping the temperature at 100 ℃, stirring for 3min, and performing pre-dispersion treatment; finally adding polybutylene terephthalate resin, an antioxidant 1010, an antioxidant 168, tricresyl phosphate, N-ethylene bis-stearamide and an ethylene-vinyl acetate copolymer, stirring for 5min, feeding into a double-screw extruder, plasticizing, mixing, extruding, bracing, cooling and granulating; the process conditions of the double-screw extruder are as follows: temperature: 215 ℃, screw rotation speed: 200 revolutions per minute.
Example 2
The invention provides a composition and a preparation method of a functional master batch;
the functional master batch is prepared from the following raw materials in parts by mass: 65 parts of polybutylene terephthalate resin, 10 parts of nano mica powder, 10 parts of nano zirconium phosphate silver-carrying antibacterial agent, 10 parts of nano bentonite, 0.1 part of tetraisopropyl di (dioctyl phosphite acyloxy) titanate, 10760.2 parts of antioxidant, 0.2 part of triphenyl phosphate, 0.5 part of polypropylene wax, 0.3 part of polysiloxane and 1 part of maleic anhydride grafted ethylene-octene copolymer;
placing the nano mica powder, the nano zirconium phosphate silver-loaded antibacterial agent and the nano bentonite into a high-speed mixer with a jacket heating device, stirring, raising the temperature to 102 ℃, stirring for 5min, and drying; then adding tetraisopropyl di (dioctyl phosphite acyloxy) titanate, keeping the temperature at 102 ℃, stirring for 10min, and carrying out surface modification treatment; adding polypropylene wax, keeping the temperature at 102 ℃, stirring for 3min, and performing pre-dispersion treatment; finally adding polybutylene terephthalate resin, an antioxidant 1076, triphenyl phosphate, polysiloxane and maleic anhydride grafted ethylene-octene copolymer, stirring for 5min, feeding into a double-screw extruder, and carrying out plasticizing, mixing, extruding, drawing, cooling and granulating; the process conditions of the double-screw extruder are as follows: temperature: 220 ℃, screw rotation speed: 300 revolutions per minute.
Example 3
The invention provides a composition and a preparation method of a functional master batch;
the functional master batch is prepared from the following raw materials in parts by mass: 70 parts of polybutylene terephthalate resin, 20 parts of nano jade powder, 10 parts of nano mica powder, 15 parts of nano zirconium phosphate silver-carrying antibacterial agent, 10 parts of nano bentonite, 0.1 part of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, 0.1 part of methacryloxypropyl trimethoxy silane, 0.5 part of pyrophosphoric acid type monoalkoxy titanate, 10100.1 parts of antioxidant, 10760.3 parts of antioxidant, 0.3 part of tricresyl phosphate, 2 parts of ethylene-vinyl acetate copolymer wax, 0.3 part of pentaerythritol stearate, 0.4 part of stearic acid amide and 5 parts of maleic anhydride grafted ethylene-octene copolymer;
placing the nano jade powder, the nano mica powder, the nano silver-loaded zirconium phosphate antibacterial agent and the nano bentonite in a high-speed mixer with a jacket heating device, stirring, raising the temperature to 105 ℃, stirring for 10min, and drying; then adding gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, methacryloxypropyl trimethoxy silane and pyrophosphoric acid type monoalkoxy titanate, keeping the temperature at 105 ℃, stirring for 10min, and performing surface modification treatment; adding ethylene-vinyl acetate copolymer wax, keeping the temperature at 105 ℃, stirring for 8min, and performing pre-dispersion treatment; finally adding polybutylene terephthalate resin, an antioxidant 1010, an antioxidant 1076, tricresyl phosphate, pentaerythritol stearate, stearic acid amide and a maleic anhydride grafted ethylene-octene copolymer, stirring for 8min, feeding into a double-screw extruder, plasticizing, mixing, extruding, drawing into strips, cooling and granulating; the process conditions of the double-screw extruder are as follows: temperature: 225 ℃, screw rotation speed: 400 rpm.
Example 4
The invention provides a composition and a preparation method of a functional master batch;
the functional master batch is prepared from the following raw materials in parts by mass: 55 parts of polybutylene terephthalate resin, 10 parts of nano jade powder, 5 parts of nano mica powder, 20 parts of nano zirconium phosphate silver-carrying antibacterial agent, 20 parts of nano bentonite, 0.5 part of isopropyl tri (dioctyl phosphate acyloxy) titanate, 0.5 part of isopropyl tristearate, 1680.2 parts of antioxidant, 10980.3 parts of antioxidant, 0.1 part of triphenyl phosphite, 0.1 part of triphenyl phosphate, 1.5 parts of ethylene-vinyl acetate copolymer wax, 0.5 part of polyethylene wax, 0.4 part of N, N-ethylene bis stearamide, 0.1 part of zinc stearate, 0.3 part of calcium stearate and 4 parts of ethylene-vinyl acetate copolymer;
placing the nano jade powder, the nano mica powder, the nano silver-loaded zirconium phosphate antibacterial agent and the nano bentonite in a high-speed mixer with a jacket heating device, stirring, raising the temperature to 110 ℃, stirring for 10min, and drying; adding isopropyl tri (dioctyl phosphate acyloxy) titanate and isopropyl tristearate, keeping the temperature at 110 ℃, stirring for 6min, and performing surface modification treatment; adding ethylene-vinyl acetate copolymer wax and polyethylene wax, keeping the temperature at 110 deg.C, stirring for 10min, and performing pre-dispersion treatment; finally adding polybutylene terephthalate resin, an antioxidant 168, an antioxidant 1098, triphenyl phosphite, triphenyl phosphate, N-ethylene bis stearamide, zinc stearate, calcium stearate and an ethylene-vinyl acetate copolymer, stirring for 10min, feeding into a double-screw extruder, plasticizing, mixing, extruding, drawing strips, cooling and granulating; the process conditions of the double-screw extruder are as follows: temperature: 230 ℃, screw rotation speed: 500 revolutions per minute.
Example 5
The invention provides a safe cool medical operating coat based on nano-composite, which is prepared from the following raw materials in parts by mass: 30 parts of functional master batch of example 1, 75 parts of polyethylene terephthalate resin slices and 0.5 part of conductive fiber;
the preparation method comprises the following steps:
(1) pre-crystallizing polyethylene terephthalate resin slices at 120 ℃ for 60min, mixing with the functional master batch of the embodiment 1, and vacuum-drying at 120 ℃ for 12h to obtain a mixed material;
(2) carrying out melt spinning on the mixed material obtained in the step (1) to obtain functionalized polyester fiber; the main spinning process comprises the following steps: the first zone 278 plus or minus 2 ℃, the second zone 283 plus or minus 2 ℃, the third zone 288 plus or minus 2 ℃, the fourth zone 290 plus or minus 2 ℃, the fifth zone 288 plus or minus 2 ℃, the sixth zone 283 plus or minus 2 ℃, the box 285 plus or minus 2 ℃, the winding speed is 800m/min, and the post-stretching process comprises the following steps: the stretching oil temperature is 62 +/-2 ℃, the heat setting temperature is 178 +/-2 ℃, and the total stretching multiple is 3.4 times;
(3) mixing the functionalized polyester fiber obtained in the step (2) with conductive fiber, and weaving to obtain a functionalized polyester fabric; the weaving process comprises the following steps: warp yarn: 75D/72FDTY + (50D/36FDTY +20D/3F antistatic filament); weft yarn: 100D/144 FDTY; density: 180 x 120; organizing: 1, 1-by-1 plain weave structure, wherein the warp static wires are arranged at an interval of 0.5 cm;
(4) and (3) performing anti-seepage barrier finishing on the functionalized polyester fabric in the step (3), wherein the fabric treatment process comprises the following steps: removing oil, dyeing, cleaning and shaping, wherein a C6 three-proofing finishing agent and an adhesive are added in the shaping link, so that the fabric has the three-proofing effect of industrial washing resistance;
the deoiling process comprises the following steps: adding oil removing agent 3g/L and liquid alkali 3g/L, and treating at 95 deg.C for 30 min;
the dyeing process comprises the following steps: adding 0.3% of disperse yellow, 1.5% of disperse turquoise blue, 1g/L of leveling agent and 1g/L of glacial acetic acid, and treating for 30min at 130 ℃;
the cleaning process comprises the following steps: adding sodium hydrosulfite 3g/L and soda 3g/L, and treating at 95 deg.C for 20 min;
a shaping process: adding 60g/L of C6 three-proofing agent and 20g/L of adhesive, and treating at 180 ℃ for 1 min;
then the functional operating coat is made according to the standard requirements, and the nano composite safe cool medical operating coat is obtained.
The cross section of the functionalized polyester fiber obtained in the step (2) is subjected to electron microscope scanning, and the result is shown in FIG. 1. As can be seen from fig. 1, a void channel is formed in the middle of the fiber cross section, and the active ingredient in the multifunctional additive can be continuously migrated to the fiber surface through the concentration gradient by virtue of the void channel to play a role.
Example 6
The invention provides a safe cool medical operating coat based on nano-composite, which is prepared from the following raw materials in parts by mass: 15 parts of functional master batch of example 2, 60 parts of polyethylene terephthalate resin slices and 5 parts of conductive fibers;
the preparation method of the safe cool medical operating gown based on the nano-composite is the same as that in the embodiment 5, wherein the functional master batch is the functional master batch in the embodiment 2.
Example 7
The invention provides a safe cool medical operating coat based on nano-composite, which is prepared from the following raw materials in parts by mass: 20 parts of the functional master batch of the embodiment 3, 70 parts of polyethylene terephthalate resin slices and 2 parts of conductive fibers;
the preparation method of the safe cool medical operating gown based on the nano-composite is the same as that in the embodiment 5, wherein the functional master batch is the functional master batch in the embodiment 3.
Example 8
The invention provides a safe cool medical operating coat based on nano-composite, which is prepared from the following raw materials in parts by mass: 40 parts of the functional master batch of the embodiment 4, 85 parts of polyethylene terephthalate resin slices and 4 parts of conductive fibers;
the preparation method of the safe cool medical operating gown based on the nano-composite is the same as that in the embodiment 5, wherein the functional master batch is the functional master batch in the embodiment 4.
The safe cool medical operating gown based on the nano-composite prepared in the embodiment 5-8 is subjected to performance detection, and specifically comprises the following steps:
antibacterial property:
the test standard is according to: according to JISL1902-2002 textile antibacterial property test method and antibacterial effect, AATCC-100 and 2012 evaluation methods of antibacterial textiles, ASTME2149-01 determination of antibacterial behavior of steady-state antibacterial agent under dynamic contact conditions, GB/T20944.2-2007 evaluation of antibacterial properties of textiles section 2: absorption method, evaluation of antibacterial Properties of textiles section 3 of GB/T20944.3-2008: the results obtained by the methods described in "Shake method" and the like are shown in Table 1.
TABLE 1 antibacterial Property test results
Safety performance:
the test standard is according to: the method is carried out according to the standard test methods such as GB/T31713-2015 requirements for safety and hygiene of antibacterial textiles, GB 18401-2010 national basic safety technical Specification for textile products, GB/T18885-2009 requirements for ecological textiles, GB/T21604-2008 method for testing acute skin irritation/corrosiveness of chemicals, and the like, and the results are shown in Table 2.
TABLE 2 safety Performance test results
Cool feeling performance:
the cool feeling test standard is according to the national standard GB/T35263-2017 detection and evaluation of cool feeling performance at the moment of textile contact, and the result is shown in Table 3. (Note: contact Cold temperature value, defined as the maximum heat flux between the sample fabric and the temperature test plate over a certain period of time, reflecting how much heat is transferred between the fabric and the skin at the moment of contact, and the feeling of cold or warm in human touch. Japanese Q-max has an assessment value of 0.2W/cm or more2The larger the value, the more cool the human touch, and conversely, the less cool the human touch. )
TABLE 3 Cool feeling Performance test results
Washing fastness:
the standard of the washable performance test is in accordance with the requirements of technical specifications of washing and disinfection of medical fabrics in WST 508 and 2016 hospitals, and the results are shown in Table 4.
TABLE 4 results of the wash fastness test
Physical properties of the fabric:
the test standard is according to: GB/T3923.1-2013 tensile properties of textile fabrics, part 1 determination of breaking strength and breaking elongation (bar method), GB/T3917.2-2009 tear properties of textile fabrics, part 2: determination of tear Strength of trouser test specimens (Single slit), "determination of abrasion resistance of textile fabrics by the Martindale method of GB/T21196.2-2007 section 2: determination of sample breakage, determination of pilling Performance of textile fabrics GB/T4802.4-2009, section 4: the method comprises a random rolling method, GB/T5453 and 1997 determination of textile fabric air permeability, preparation, marking and measurement of textile samples in a test of size change in GB/T8628 and 2013, determination of size change after washing and drying of GB/T8630 and 2013, home and commercial color fastness test of GB/T12490 and 2014 textile, rubbing color fastness test of GB/T3920 and 2008 textile color fastness test, perspiration stain color fastness test of GB/T3922 and 2013 textile color fastness test, and home washing and drying procedures for GB/T8629 and 2017 textile tests, wherein the results are shown in Table 5.
Table 5 results of physical property testing of fabrics
The performance requirements of the operating coat are as follows:
the test standard is according to: YY/T0506.2-2016 patient, medical staff and instruments surgical drape, gown and clean garment part 2: performance requirements and test methods the results of the standard tests are shown in Table 6.
TABLE 6 test results of surgical gown performance requirements
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The safe cool medical operating coat based on nano-composite is characterized by being prepared from the following raw materials in parts by mass: 15-40 parts of functional master batch, 60-85 parts of polyethylene terephthalate resin slices and 0.5-5 parts of conductive fibers.
2. The safe cool medical surgical gown based on nano-composite as claimed in claim 1, wherein the functional master batch is prepared from the following raw materials in parts by mass:
55-70 parts of polybutylene terephthalate resin, 5-30 parts of a cooling additive, 5-20 parts of an antibacterial additive, 5-20 parts of bentonite, 0.1-2 parts of a surface modifier, 0.1-0.5 part of an antioxidant, 0.1-0.3 part of a heat stabilizer, 0.5-2 parts of a dispersant, 0.3-1 part of a lubricant and 1-5 parts of a modifier.
3. The medical operating gown for safety cool feeling based on nano-composite as claimed in claim 2, wherein the cool feeling additive is one or both of nano jade powder and nano mica powder, and the particle size is less than 100 nm.
4. The nanocomposite-based safe cool medical surgical gown according to claim 2 or 3, wherein the antibacterial additive is a nano silver zirconium phosphate antibacterial agent.
5. The nanocomposite-based safe cool medical surgical gown as claimed in claim 4, wherein the modifier is an ethylene-vinyl acetate copolymer or a maleic anhydride grafted ethylene-octene copolymer.
6. A safe cool medical surgical gown based on nanocomposite coating as claimed in claim 2 or 5, characterised in that the surface modifier is one or more of gamma- (2, 3-epoxypropoxy) propyltrimethoxysilane, methacryloxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, isopropyldioleate acyloxy (dioctylphosphate) titanate, pyrophosphoric monoalkoxytitanate, isopropyltris (dioctylphosphate) titanate, isopropyl tristearate, bis (dioctyloxypyrophosphate) ethylene titanate, tetraisopropylbis (dioctylphosphateyloxy) titanate and distearoyloxyisopropoxy aluminate.
7. The nanocomposite-based safe cool medical operating gown as claimed in claim 2, wherein the dispersant is one or more of ethylene-vinyl acetate copolymer wax, polypropylene wax and polyethylene wax; the average molecular weight of the dispersant is 2000-5000.
8. A method for preparing a safe cool medical operating coat based on nano-composite according to any one of claims 1 to 7, which comprises the following steps:
(1) pre-crystallizing polyethylene terephthalate resin slices, mixing with the functional master batch, and drying to obtain a mixed material;
(2) carrying out melt spinning on the mixed material obtained in the step (1) to obtain functionalized polyester fiber;
(3) mixing the functionalized polyester fiber obtained in the step (2) with conductive fiber, and knitting or weaving to obtain a functionalized polyester fabric;
(4) and (4) performing anti-seepage blocking finishing on the functionalized polyester fabric in the step (3), and then preparing the functionalized surgical gown according to the standard requirement to obtain the nano composite safe cool medical surgical gown.
9. The method for preparing a safe and cool medical surgical gown based on nanocomposite, according to claim 8, wherein the pre-crystallization temperature in the step (1) is 120 to 140 ℃, and the pre-crystallization time is 60 to 120 min.
10. The method for preparing a safe cool medical surgical gown based on nano-composite according to claim 8 or 9, wherein the temperature of the melt spinning in the step (2) is 275-293 ℃.
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CN107780038A (en) * | 2017-09-19 | 2018-03-09 | 江南大学 | A kind of antibacterial cooling function fabric and preparation method thereof |
CN108411402A (en) * | 2017-09-22 | 2018-08-17 | 浙江中迪纺织新材料科技有限公司 | A kind of garment material based on one-D nano zinc oxide polyester antibacterial plastic concentrate |
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CN107780038A (en) * | 2017-09-19 | 2018-03-09 | 江南大学 | A kind of antibacterial cooling function fabric and preparation method thereof |
CN108411402A (en) * | 2017-09-22 | 2018-08-17 | 浙江中迪纺织新材料科技有限公司 | A kind of garment material based on one-D nano zinc oxide polyester antibacterial plastic concentrate |
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