CN116446196A - Preparation method and application of medical ray protection material - Google Patents
Preparation method and application of medical ray protection material Download PDFInfo
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- CN116446196A CN116446196A CN202310358899.3A CN202310358899A CN116446196A CN 116446196 A CN116446196 A CN 116446196A CN 202310358899 A CN202310358899 A CN 202310358899A CN 116446196 A CN116446196 A CN 116446196A
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- 239000000463 material Substances 0.000 title claims abstract description 103
- 238000002360 preparation method Methods 0.000 title claims abstract description 58
- 239000004814 polyurethane Substances 0.000 claims abstract description 88
- 229920002635 polyurethane Polymers 0.000 claims abstract description 82
- 239000002002 slurry Substances 0.000 claims abstract description 61
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 47
- 230000005855 radiation Effects 0.000 claims abstract description 40
- 239000004744 fabric Substances 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 52
- 239000002994 raw material Substances 0.000 claims description 46
- 239000000155 melt Substances 0.000 claims description 39
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 30
- 239000002033 PVDF binder Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 20
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 20
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 20
- 229920005749 polyurethane resin Polymers 0.000 claims description 20
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 16
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 16
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 16
- 229910001938 gadolinium oxide Inorganic materials 0.000 claims description 15
- 229940075613 gadolinium oxide Drugs 0.000 claims description 15
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000002562 thickening agent Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 229940049706 benzodiazepine Drugs 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 4
- 230000003115 biocidal effect Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 229910044991 metal oxide Inorganic materials 0.000 description 13
- 150000004706 metal oxides Chemical class 0.000 description 13
- 150000003839 salts Chemical class 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 238000005054 agglomeration Methods 0.000 description 7
- 230000002776 aggregation Effects 0.000 description 7
- 239000002861 polymer material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229920000927 poly(p-phenylene benzobisoxazole) Polymers 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010073306 Exposure to radiation Diseases 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 231100000405 induce cancer Toxicity 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/183—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/042—Acrylic polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/02—Synthetic macromolecular fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/02—Synthetic macromolecular fibres
- D06N2201/0263—Polyamide fibres
- D06N2201/0272—Aromatic polyamide fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/105—Resistant to abrasion, scratch
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/10—Clothing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention relates to the technical field of radiation protection materials, in particular to a preparation method and application of a medical radiation protection material. The preparation method comprises the following steps: uniformly coating polyurethane slurry on the front side and the back side of the fabric to obtain a polyurethane material; and simultaneously drawing the polyurethane material and the antibacterial layer extruded by the screw extruder to a thermostatic roller for heat sealing and film forming, and cooling by a cooling roller to obtain the medical radiation protection material. The medical ray protection material not only has excellent ray penetration resistance, but also has the characteristics of wear resistance, antibiosis and light weight. The protective clothing made of the medical ray protection material is convenient to wear and has good comfort for human bodies.
Description
Technical Field
The invention relates to the technical field of radiation protection materials, in particular to a preparation method and application of a medical radiation protection material.
Background
The radiation has wide application in the fields of medical diagnosis, safety inspection, metal flaw detection and the like. As applications become wider, the potential hazards that arise are also becoming more important. Long-term exposure to radiation can cause injury to the body and, in severe cases, can induce cancer.
At present, common ray protection materials mainly comprise concrete, lead coating, polymer composite materials and the like. Wherein concrete is used to protect the fixation target. The lead clothing has high density, is difficult to process and heavy, is complicated to wear, and when doctors wear the lead clothing for a long time to do interventional operation, the high load of the lead clothing often causes diseases of lumbar vertebrae of the doctors. In addition, the wear of the lead clothes causes the weakening of the protection effect along with longer wearing time, and the service life of the lead clothes is only 5-8 years. The polymer composite material is prepared by mixing metal or metal oxide with polymer material to prepare radiation protection material. The composite material is easy to crack and peel due to poor compatibility of metal or metal oxide and high polymer material and uneven mixing, so that the protection effect is poor.
Disclosure of Invention
Aiming at the technical problems, the invention provides a preparation method and application of a medical ray protection material. The medical radiation protection material prepared by the preparation method has good compatibility between the metal oxide and the metal salt and the polyurethane resin, and the components are uniformly mixed, so that agglomeration between the metal oxide and the metal salt is avoided, and the technical problems of poor compatibility and uneven mixing of the traditional high polymer material and the metal oxide and the metal salt are solved.
In order to solve the technical problems, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a method for preparing a medical radiation protective material, comprising the steps of: uniformly coating polyurethane slurry on the front side and the back side of the fabric to obtain a polyurethane material; and simultaneously drawing the polyurethane material and an antibacterial layer extruded by a screw extruder to a thermostatic roller for heat sealing and film forming, and cooling by a cooling roller to obtain the medical ray protection material, wherein the preparation raw materials of the polyurethane slurry comprise the following components in parts by weight: 80-85 parts of polyurethane resin (PU), 5-10 parts of gadolinium oxide, 3-5 parts of bismuth oxide, 3-5 parts of barium sulfate, 2-10 parts of color paste, 5-10 parts of thickener, 3-6 parts of advection agent and 5-8 parts of slipping agent; the antibacterial layer is prepared from the following raw materials in parts by weight: 70-80 parts of polyvinylidene fluoride resin (PVDF), 10-20 parts of polymethyl methacrylate (PMMA), 2-3 parts of nano silver particles, 3-6 parts of advection agent and 5-8 parts of slipping agent.
The invention uniformly coats the radiation-proof polyurethane slurry on the front and back surfaces of the fabric, and the radiation-proof polyurethane material is obtained after drying; and then the polyurethane material and the antibacterial layer are led into a thermostatic roller, and polyurethane resin in the polyurethane material and a high polymer material of the antibacterial layer are melted into a whole through the heating action of the thermostatic roller, so that the medical radiation protection material with the polyurethane material and the antibacterial layer tightly combined is obtained.
The polyurethane resin in the polyurethane slurry is PU for short, and has high-molecular materials with high strength, tear resistance, wear resistance and the like; metal oxide and metal salt: gadolinium oxide, bismuth oxide and barium sulfate all have radiation protection effect; the color paste can change the color of polyurethane slurry; the slipping agent can reduce the resistance among the components in the slurry preparation process, so that the components are smooth, and the agglomeration and adhesion of metal oxides and metal salts are avoided; the advection agent can well disperse each component and can also avoid agglomeration and adhesion of metal oxides and metal salts; the thickener can increase the viscosity of the slurry, so that the slurry can maintain a uniform and stable suspension state or an emulsion state. Under the cooperation of the specific proportion of the components, polyurethane slurry with evenly distributed metal oxides and metal salts can be obtained, the agglomeration between the metal oxides and the metal salts is avoided, and the technical problems of poor compatibility and uneven mixing of the traditional high polymer materials and the metal oxides and the metal salts are solved. The polyurethane material is coated on the front and back surfaces of the fabric, and is dried to obtain the polyurethane material with smooth surface and good color.
The gadolinium oxide, bismuth oxide and barium sulfate in the polyurethane material have the radiation protection effect, and under the synergistic effect of the three substances, the polyurethane material has the excellent radiation penetration resistance effect, so that the injury of rays to human bodies is avoided.
The polyvinylidene fluoride resin, polymethyl methacrylate and nano silver particles of the antibacterial layer have antibacterial effect, the polyvinylidene fluoride resin, polymethyl methacrylate, nano silver, a smoothing agent and a slipping agent are added into a screw extruder to be heated and melted into a melt, and under the action of the smoothing agent and the slipping agent, the melt with uniformly dispersed components is obtained, and the melt is extruded by the screw to obtain the antibacterial layer.
Under the action of heat of the thermostatic roller, the PU resin in the polyurethane material and PVDF and PMMA of the antibacterial layer are melted into a whole, so that the medical radiation protection material with the polyurethane material and the antibacterial layer tightly combined is obtained. Because the PU resin has strong adhesiveness after being melted under the action of heat, the PU resin can be firmly adhered with PVDF and PMMA of the antibacterial layer, so that the antibacterial layer cannot be peeled off from the polyurethane material, and the technical problem that the traditional high polymer material is easy to crack and peel is solved.
The raw materials and the process enable the medical ray protection material to not only have excellent ray penetration resistance, but also have the characteristics of wear resistance, antibiosis and light weight. The protective clothing made of the medical ray protection material is convenient to wear and has good comfort for human bodies.
Preferably, the preparation method of the polyurethane material comprises the following steps: adding the preparation raw materials of the polyurethane slurry into a slurry barrel, heating, melting and stirring to obtain the polyurethane slurry; and coating the polyurethane slurry on one surface of the fabric through a press roll, coating the polyurethane slurry on the other surface of the fabric through another press roll, drying and rolling to obtain the polyurethane material.
Preferably, the melting temperature of the slurry is 80-100 ℃ and the stirring speed is 60-80r/min.
The melting temperature and the stirring speed can enable the preparation raw materials of the polyurethane slurry to be uniformly melted into a melt, and the agglomeration of the preparation raw materials is avoided.
Preferably, the drying temperature is 60-80 ℃.
Preferably, the polyurethane material has a thickness of 60-80 μm.
Preferably, the particle sizes of the gadolinium oxide, the bismuth oxide and the barium sulfate are all 2-5 mu m.
Preferably, the polyurethane resin is any one of PU-6045, PU-2050 and PU-5800; the thickener is ZC-2010; the advection agent is TH-0336, and the slipping agent is SH-96910.
The polyurethane resin (PU resin) has the characteristic of large viscosity after melting; the slipping agent can reduce the resistance among the components in the preparation process of the slurry, so that the components are smooth, and the agglomeration and adhesion of metal oxides and metal salts are avoided; the advection agent can well disperse each component and can also avoid agglomeration and adhesion of metal oxide and metal salt; the thickener can improve the viscosity of the slurry and enable the slurry to maintain a uniform and stable suspension state or an emulsion state.
Preferably, the polyvinylidene fluoride resin is PVDF-6012 or PVDF-2500-25; the polymethyl methacrylate is PMMA-V04 or PMMA-V825; the nano silver particles are NM-9901.
In the formula of the raw materials for preparing the antibacterial layer, polyvinylidene fluoride resin (PVDF) and polymethyl methacrylate (PMMA) have self-cleaning antibacterial effect; the nano silver particles also have antibacterial effect; the advection agent and the slipping agent can uniformly disperse the components to obtain an antibacterial layer with good compatibility of the components (polyvinylidene fluoride resin, polymethyl methacrylate, nano silver particles, the advection agent and the slipping agent).
Preferably, the preparation method of the antibacterial layer comprises the following steps: and adding the antibacterial layer preparation raw material into a die head of a screw extruder to plasticize a melt, pushing the melt by a screw, enabling the melt to pass through a filter screen in a rotary flow mode, enabling the melt to rotate to be straight flow, enabling the melt in the die head to be input into a flow passage through a distributor, and leading the melt into the die head in a balanced manner to obtain the antibacterial layer.
Under the heating and stirring action of a screw extruder die head, the high polymer materials of polyvinylidene fluoride resin, polymethyl methacrylate, nano silver particles, a advection agent and a slipping agent in the antibacterial layer preparation raw materials are heated and plasticized into a melt, and then the melt is extruded from the die head under the pushing of the screw extruder screw to obtain the antibacterial layer.
Preferably, the extrusion temperature of the screw extruder is 205-215 ℃, the extrusion speed is 50-60r/min, the die temperature is 255-260 ℃, and the die temperature can uniformly heat and mix the antibacterial layer preparation raw materials. The screw extrusion temperature can sufficiently melt polyvinylidene fluoride resin, polymethyl methacrylate, nano silver particles, a advection agent and a slipping agent in the antibacterial layer preparation raw material into a uniform melt. The extrusion speed can uniformly extrude the antibacterial layer.
The thickness of the antibacterial layer is 50-80 mu m.
Preferably, the fabric comprises any one of polyester, aramid and poly (p-phenylene benzobisoxazole) fibers.
The fabric has strong tensile property, can play a role in supporting medical ray protection materials, and can select corresponding fabric materials according to the requirements of the medical ray protection materials. For example, polyester has the advantage of good economy; the aramid fiber has the advantages of high temperature resistance, firmness and tensile strength; poly (p-Phenylene Benzobisoxazole) (PBO) has the advantage of high mechanical strength.
In a second aspect, the invention also provides a medical ray protection material obtained by the preparation method.
In a third aspect, the invention also provides an application of the medical ray protection material obtained by the preparation method in preparation of medical protective clothing or aviation clothing. The medical ray protection material not only has excellent ray penetration resistance, but also has the characteristics of wear resistance, antibiosis and light weight, is suitable for the preparation of hospital protective clothing and aviation clothing, and is convenient to wear and good in human comfort when being manufactured into the hospital protective clothing and aviation clothing.
Drawings
FIG. 1 is a flow chart of a preparation process of the preparation method of the medical radiation protection material, wherein 1-fabric rolls, 2-first slurry tank, 21-second slurry tank, 3-press roller, 4-guide roller, 5-first dryer, 6-press roller, 7-second dryer, 8-guide roller, 9, 10 screw extruder, 11-constant temperature roller, 12-cooling roller and 13-winding are adopted.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The terms "upper", "lower", "left" and "right" used in the present invention are limited only to the views shown in the drawings of the present specification.
The invention provides a preparation process flow of a preparation method of a medical ray protection material, which is shown in figure 1.
As can be seen from fig. 1, the fabric is placed on a fabric roll 1, the fabric is transported to the upper side of a first slurry tank 2 by traction of a guide roller 4, the front surface of the fabric is coated with slurry by the action of a press roller 3, the fabric is drawn by the guide roller 4, the surface of the fabric is dried by passing below a first dryer 5, the fabric is drawn to the upper side of a second slurry tank 21 by traction of the guide roller 4, the back surface of the fabric is coated with slurry by the action of the press roller 6, and the front surface and the back surface of the fabric are coated with slurry by drying the surface of the fabric by a second dryer 7, so as to obtain the polyurethane material. And then the polyurethane material is conveyed between the screw extruders 9 and 10 through the guide roller 8, the antibacterial layer is extruded by the screw extruders 9 and 10 to the surfaces of the two sides of the polyurethane material, a constant temperature roller 11 is introduced to synthesize a film through instantaneous heat, a cooling roller 12 is used for cooling, and a winding roller 13 is used for winding, so that the medical ray protection material is obtained.
The invention will be further described in detail with reference to specific examples.
Example 1
The embodiment of the invention provides a preparation method of a medical ray protection material, which comprises the following steps:
s1, adding raw materials for preparing polyurethane slurry into a slurry pool, melting at 80 ℃, and stirring at 60r/min to obtain polyurethane slurry; the method comprises the steps of drawing a fabric to the upper side of polyurethane slurry through a guide roller, drying at 60 ℃ after the polyurethane slurry is coated on one side of the fabric through a compression roller, drawing the fabric to the upper side of the polyurethane slurry through the guide roller, coating the polyurethane slurry on the other side of the fabric through another compression roller, and finally drying and rolling at 60 ℃ to obtain a polyurethane material, wherein the thickness of the polyurethane material is 60 mu m.
S2, respectively adding the preparation raw materials of the antibacterial layer into dies of screw extruders 9 and 10, plasticizing the melt at the screw extrusion temperature of 205 ℃, pushing the melt by a screw, enabling the melt to pass through a filter screen in a rotary flow mode, enabling the melt to rotate into straight flow, inputting the melt in the die into a runner through a distributor, leading the melt into the die in balance at the screw extrusion speed of 50r/min, enabling the melt to flow out through a die lip, casting the melt to the surfaces on two sides of the polyurethane material, enabling the die temperature to be 255 ℃, then performing heat-sealing to form a film by a constant temperature roller, cooling by a cooling roller, and winding to obtain the medical radiation protection material, wherein the thickness of the antibacterial layer is 50 mu m.
The preparation raw materials of the medical ray protection material comprise the preparation raw materials of polyurethane slurry and the preparation raw materials of an antibacterial layer.
The preparation raw materials of the polyurethane slurry comprise the following components in parts by weight: 80 parts of polyurethane resin, 5 parts of gadolinium oxide, 3 parts of bismuth oxide, 3 parts of barium sulfate, 2 parts of color paste, 5 parts of thickener, 3 parts of advection agent and 5 parts of slipping agent; the particle sizes of gadolinium oxide, bismuth oxide and barium sulfate are all 2-5 mu m. The polyurethane resin is PU-6045; the thickener is ZC-2010; the advection agent is TH-0336, and the slipping agent is SH-96910.
The antibacterial layer is prepared from the following raw materials in parts by weight: 70 parts of polyvinylidene fluoride resin, 10 parts of polymethyl methacrylate, 3 parts of nano silver particles, 3 parts of a advection agent and 5 parts of a slipping agent; wherein the polyvinylidene fluoride resin is PVDF-6012; polymethyl methacrylate is PMMA-V04; the nano silver particles are NM-9901; the advection agent is TH-0336; the slipping agent is SH-96910.
The fabric is terylene.
Example 2
The embodiment of the invention provides a preparation method of a medical ray protection material, which comprises the following steps:
s1, adding raw materials for preparing polyurethane slurry into a slurry pool, melting at 90 ℃, and stirring at 75r/min to obtain polyurethane slurry; the method comprises the steps of drawing a fabric onto polyurethane slurry through a guide roller, drying at 70 ℃ after the polyurethane slurry is coated on one surface of the fabric through a compression roller, drawing the fabric onto the polyurethane slurry through the guide roller, coating the polyurethane slurry on the other surface of the fabric through another compression roller, and finally drying and rolling at 70 ℃ to obtain a polyurethane material, wherein the thickness of the polyurethane material is 70 mu m.
S2, respectively adding the preparation raw materials of the antibacterial layer into dies of screw extruders 9 and 10, plasticizing the melt at the screw extrusion temperature of 210 ℃, pushing the melt by the screw to pass through a filter screen in a rotary flow mode, changing the melt into straight flow, inputting the melt in the die into a runner by a distributor, leading the melt into the die in balance at the extrusion speed of 55r/min of the screw, flowing out through a die lip, casting the melt to the surfaces on two sides of the polyurethane material, performing heat-sealing to form a film by a constant temperature roller, cooling by a cooling roller, and rolling to obtain the medical radiation protection material, wherein the thickness of the antibacterial layer is 60 mu m.
The preparation raw materials of the medical ray protection material comprise the preparation raw materials of polyurethane slurry and the preparation raw materials of an antibacterial layer.
The preparation raw materials of the polyurethane slurry comprise the following components in parts by weight: 83 parts of polyurethane resin, 8 parts of gadolinium oxide, 4 parts of bismuth oxide, 4 parts of barium sulfate, 8 parts of color paste, 6 parts of thickener, 4 parts of advection agent and 6 parts of slipping agent; the particle sizes of gadolinium oxide, bismuth oxide and barium sulfate are all 2-5 mu m; the polyurethane resin is PU-2050; the thickener is ZC-2010; the advection agent is TH-0336, and the slipping agent is SH-96910.
The antibacterial layer is prepared from the following raw materials in parts by weight: 76 parts of polyvinylidene fluoride resin, 15 parts of polymethyl methacrylate, 3 parts of nano silver particles, 4 parts of advection agent and 6 parts of slipping agent; wherein the polyvinylidene fluoride resin is PVDF-2500-25; polymethyl methacrylate is PMMA-V825, and nano silver particles are NM-9901; the advection agent is TH-0336; the slipping agent is SH-96910.
The fabric is aramid.
Example 3
The embodiment of the invention provides a preparation method of a medical ray protection material, which comprises the following steps:
s1, adding raw materials for preparing polyurethane slurry into a slurry pool, melting at 100 ℃, and stirring at 80r/min to obtain polyurethane slurry; the method comprises the steps of drawing a fabric to the upper side of polyurethane slurry through a guide roller, drying at 80 ℃ after the polyurethane slurry is coated on one side of the fabric through a press roller, drawing the fabric to the upper side of the polyurethane slurry through the guide roller, coating the polyurethane slurry on the other side of the fabric through another press roller, and finally drying and winding at 80 ℃ to obtain a polyurethane material, wherein the thickness of the polyurethane material is 80 mu m.
S2, respectively adding the preparation raw materials of the antibacterial layer into dies of screw extruders 9 and 10, plasticizing the melt at the screw extrusion temperature of 215 ℃, pushing the melt by the screw to pass through a filter screen in a rotary flow mode, changing the melt into straight flow, inputting the melt in the die into a runner by a distributor, leading the melt into the die in balance at the extrusion speed of 60r/min of the screw, flowing out through die lips, casting the melt to the surfaces on two sides of the polyurethane material, heating the die at the temperature of 260 ℃, forming a film by a constant temperature roller, cooling by a cooling roller, and rolling to obtain the medical radiation protection material, wherein the thickness of the antibacterial layer is 80 mu m.
The preparation raw materials of the medical ray protection material comprise the preparation raw materials of polyurethane slurry and the preparation raw materials of an antibacterial layer.
The preparation raw materials of the polyurethane slurry comprise the following components in parts by weight: 85 parts of polyurethane resin, 10 parts of gadolinium oxide, 5 parts of bismuth oxide, 5 parts of barium sulfate, 10 parts of color paste, 10 parts of thickener, 6 parts of advection agent and 8 parts of slipping agent; the particle sizes of gadolinium oxide, bismuth oxide and barium sulfate are 2-5 mu m; the polyurethane resin is PU-5800; the thickener is ZC-2010; the advection agent is TH-0336, and the slipping agent is SH-96910.
The antibacterial layer is prepared from the following raw materials in parts by weight: 80 parts of polyvinylidene fluoride resin, 20 parts of polymethyl methacrylate, 3 parts of nano silver particles, 6 parts of a advection agent and 8 parts of a slipping agent; wherein the polyvinylidene fluoride resin is PVDF-6012; polymethyl methacrylate is PMMA-V825, nano silver particles are NM-9901, a advection agent is TH-0336, and a slipping agent is SH-96910.
The fabric is poly (p-phenylene benzobisoxazole) fiber.
Comparative example 1
The preparation method of the medical ray protection material is the same as that of the embodiment 2.
Among the raw materials for preparing the medical radiation protection material, the radiation protection material in the raw materials for preparing the polyurethane material only contains gadolinium oxide, and the rest is the same as the formula of the example 2.
Comparative example 2
The preparation method of the medical ray protection material is the same as that of the embodiment 2.
Among the above raw materials for preparing the medical radiation protection material, the radiation protection material in the raw materials for preparing the polyurethane material only contains bismuth oxide, and the other components are the same as in the formulation of example 2.
Comparative example 3
The preparation method of the medical ray protection material is the same as that of the embodiment 2.
In the raw materials for preparing the medical radiation protection material, the radiation protection material in the raw materials for preparing the polyurethane material only contains barium sulfate, and the rest is the same as the formula of the example 2.
Comparative example 4
The preparation method of the medical ray protection material is the same as that of the embodiment 2.
In the raw materials for preparing the medical radiation protection material, the radiation protection material in the raw materials for preparing the polyurethane material only contains bismuth oxide and gadolinium oxide, and the rest is the same as the formula of the example 2.
Comparative example 5
The preparation method of the medical ray protection material is the same as that of the embodiment 2.
In the raw materials for preparing the medical radiation protection material, the radiation protection material in the raw materials for preparing the polyurethane material only contains bismuth oxide and barium sulfate, and the rest is the same as the formula of the example 2.
Verification example 1
The medical radiation protection materials prepared in examples 1 to 3 and comparative examples 1 to 5 were subjected to the tests of air permeability, water resistance, antibacterial property, abrasion resistance, and radiation protection properties of the medical radiation protection materials prepared in each example and comparative example according to national standard GB18871-2002 basic Standard for protection against ionizing radiation and radiation source, and the detection results and the performance indexes are shown in Table 1.
TABLE 1 detection results and Performance indicators
As can be seen from Table 1, the medical ray protective materials prepared in examples 1 to 3 and comparative examples 1 to 5 all satisfy the standard requirements for air permeability, water resistance, and antibacterial property.
The radiation protection performance of the medical radiation protection materials of examples 1-3 are above 96%, and the radiation protection performance of the medical radiation protection materials of comparative examples 1-5 are below 90%, which indicates that the gadolinium oxide, the bismuth oxide and the barium sulfate have synergistic effect, and the high-efficiency radiation protection effect is realized under the synergistic cooperation of the three radiation protection substances.
The medical ray protection materials prepared in the examples 1-3 and the comparative examples 1-5 are excellent in wear resistance, durable, light in weight, convenient to wear, and good in human comfort.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The preparation method of the medical ray protection material is characterized by comprising the following steps of: uniformly coating polyurethane slurry on the front side and the back side of the fabric to obtain a polyurethane material; and simultaneously drawing the polyurethane material and an antibacterial layer extruded by a screw extruder to a thermostatic roller for heat sealing and film forming, and cooling by a cooling roller to obtain the medical ray protection material, wherein the preparation raw materials of the polyurethane slurry comprise the following components in parts by weight: 80-85 parts of polyurethane resin, 5-10 parts of gadolinium oxide, 3-5 parts of bismuth oxide, 3-5 parts of barium sulfate, 2-10 parts of color paste, 5-10 parts of thickener, 3-6 parts of advection agent and 5-8 parts of slipping agent; the antibacterial layer is prepared from the following raw materials in parts by weight: 70-80 parts of polyvinylidene fluoride resin, 10-20 parts of polymethyl methacrylate, 2-3 parts of nano silver particles, 3-6 parts of a advection agent and 5-8 parts of a slipping agent.
2. The preparation method according to claim 1, wherein the preparation method of the polyurethane material comprises the following steps: heating, melting and stirring the preparation raw materials of the polyurethane slurry to obtain the polyurethane slurry;
and coating the polyurethane slurry on one surface of the fabric through a press roll, coating the polyurethane slurry on the other surface of the fabric through another press roll, drying and rolling to obtain the polyurethane material.
3. The preparation method according to claim 2, wherein the slurry has a melting temperature of 80-100 ℃ and a stirring speed of 60-80r/min; and/or
The temperature of the drying is 60-80 ℃; and/or
The thickness of the polyurethane material is 60-80 mu m.
4. The method according to claim 1, wherein the particle sizes of the gadolinium oxide, bismuth oxide and barium sulfate are all 2-5 μm.
5. The method according to claim 1, wherein the polyurethane resin is any one of PU-6045, PU-2050, PU-5800; the thickener is ZC-2010; the advection agent is TH-0336, and the slipping agent is SH-96910; the polyvinylidene fluoride resin is PVDF-6012 or PVDF-2500-25; the polymethyl methacrylate is PMMA-V04 or PMMA-V825; the nano silver particles are NM-9901.
6. The method of manufacturing according to claim 1, wherein the method of manufacturing the antibacterial layer is: and adding the preparation raw materials of the antibacterial layer into a die head of a screw extruder to plasticize the melt, pushing the melt by a screw, enabling the melt to pass through a filter screen in a rotary flow mode, enabling the melt to rotate to be straight flow, enabling the melt in the die head to be input into a flow passage through a distributor, and leading the melt into the die head in a balanced manner and enabling the melt to flow out through a die lip to obtain the antibacterial layer.
7. The method according to claim 6, wherein the extrusion temperature of the screw extruder is 205-215 ℃, the extrusion speed is 50-60r/min, and the die temperature is 255-260 ℃; and/or
The thickness of the antibacterial layer is 50-80 mu m.
8. The method of claim 1, wherein the fabric comprises any one of polyester, aramid and parylene-benzodiazepine fibers.
9. A medical radiation protective material obtainable by the process of any one of claims 1 to 8.
10. Use of a medical radiation protective material obtainable by the process according to any one of claims 1 to 8 for the preparation of medical protective clothing or aviation wear.
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