CN117286724A - Ionizing radiation-resistant coating for radiation-resistant clothing and preparation method thereof - Google Patents

Ionizing radiation-resistant coating for radiation-resistant clothing and preparation method thereof Download PDF

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Publication number
CN117286724A
CN117286724A CN202311201319.6A CN202311201319A CN117286724A CN 117286724 A CN117286724 A CN 117286724A CN 202311201319 A CN202311201319 A CN 202311201319A CN 117286724 A CN117286724 A CN 117286724A
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parts
radiation
glass fiber
coating
shielding
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Inventor
任泽明
王号
贺超
宋铁龙
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Guangdong Suqun Industrial Co ltd
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Guangdong Suqun Industrial Co ltd
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial 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
    • D06N3/14Artificial 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
    • D06N3/142Artificial 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 mixture of polyurethanes with other resins in the same layer
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial 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
    • D06N3/0063Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2209/00Properties of the materials
    • D06N2209/04Properties of the materials having electrical or magnetic properties
    • D06N2209/048Electromagnetic interference shielding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The application relates to the technical field of anti-ionizing radiation, in particular to an anti-ionizing radiation coating for anti-radiation clothes and a preparation method thereof, wherein the coating is prepared from the following raw materials in parts by weight: 20-30 parts of shielding solid powder, 5-10 parts of glass fiber, 30-50 parts of waterborne polyurethane, 5-15 parts of cellulose esters, 60-80 parts of water, 5-10 parts of tackifying resin solution, 1-3 parts of silane coupling agent and 1-2 parts of curing agent; the shielding solid powder comprises metal and metal oxide, and has an average particle size of 150-300um; the average particle size of the glass fiber is 50-100um. The formula is prepared into the anti-ionizing radiation coating of the anti-radiation garment, so that the anti-radiation performance of the anti-radiation garment can be further improved, the dosage of shielding powder is reduced, and the adhesive performance of the coating and the fabric is further improved by adding the aqueous polyurethane, cellulose esters and tackifying resin solution, so that the coating layer can be used for a long time without falling off.

Description

Ionizing radiation-resistant coating for radiation-resistant clothing and preparation method thereof
Technical Field
The application relates to the technical field of anti-ionizing radiation, in particular to an anti-ionizing radiation coating for anti-radiation clothes and a preparation method thereof.
Background
The ionizing radiation is a general term of radiation for guiding substances to ionize, and the main sources of the ionizing radiation include gamma rays, X rays, beta rays, alpha rays and the like. The rational use of ionizing radiation is beneficial to the social development of humans, such as the use of ionizing radiation in medical equipment, nuclear reactors, research fields, and the like. However, once ionizing radiation is used beyond a reasonable range of application, damage to the human body may occur.
The main factors of the ionizing radiation causing damage to the human body are three factors of time, distance and radiation quantity. The human body is intermittently exposed to the radiation environment for a long time, and even if the radiation quantity is relatively small, the human body can be damaged after being irradiated for a certain time, such as tumor, cataract, skin cancer and the like. The human body receives large-dose radiation ionization in a short time, which can immediately cause human body injury, such as large-area bleeding, shock, blind eyes and the like, and generate chronic injury. The closer to the ionizing radiation source the more susceptible to the effects of flashlight radiation. For a short period of time, where a large amount of ionizing radiation is received and the source of ionizing radiation is in close proximity, accidents are generally not caused to occur, and are rarely encountered.
The technology for preventing the ionizing radiation is basically to use tungsten, bismuth, tin and compounds thereof and rare earth elements and the like to match in a certain proportion, and the shielding material, such as radiation protection clothing, is manufactured by processing and shaping the shielding material by using shaping materials. The radiation protection clothes are mainly characterized in that a layer of radiation protection paint is coated on the surface of the clothes, wherein the dosage of metal and metal oxide in the radiation protection paint can reach 50-90%, and the dosage is more, so that the coating is easy to fall off and is not suitable for long-time use.
Disclosure of Invention
In order to solve the problem that excessive use of metal and metal oxide in the anti-radiation coating causes the first falling of the coating, the application provides an anti-ionization radiation coating for anti-radiation clothes and a preparation method thereof.
In a first aspect, the present application provides an ionizing radiation protection coating for radiation protection clothing, which adopts the following technical scheme: the ionizing radiation-resistant coating for the radiation-resistant clothing is prepared from the following raw materials in parts by weight:
20-30 parts of shielding solid powder
5-10 parts of glass fiber
30-50 parts of aqueous polyurethane
5-15 parts of cellulose esters
60-80 parts of water
5-10 parts of tackifying resin solution
1-3 parts of silane coupling agent
1-2 parts of curing agent
The shielding solid powder comprises heavy metals and heavy metal oxides, and has an average particle size of 150-300um;
the average particle size of the glass fiber is 50-100um.
By adopting the technical scheme, the prepared coating has good radiation protection effect, and can be stably used on the surface of the fabric for a long time without falling off. Wherein this application has reduced shielding solid powder's quantity, however, its radiation protection effect does not reduce, uses the radiation protection effect that improves the coating through collocating shielding solid powder and glass fiber jointly, prevents because shielding solid powder quantity reduces, and the shielding effect reduces, can not reach the requirement of being applied to radiation protection clothes. Further, the average particle size of shielding solid powder and metal oxide and the average particle size of glass fiber are optimized, so that the inner wall structure is complex and disordered when the coating is cured, and the radiation protection effect is better.
The aqueous polyurethane takes water as a medium, has low content of organic volatile matters (VOC), does not contain free diisocyanate monomers, reduces volatilization toxicity, and is environment-friendly. Therefore, the waterborne polyurethane is used as a main bonding substance of the coating, so that the coating has a bonding effect, is good in environmental protection performance, is nontoxic, and is more suitable for preparing radiation protection clothes. Preferably, the aqueous polyurethane has a modulus of 20-30kg/cm2, a viscosity of 80000-120000CPS at 30deg.C, a molecular weight of 200000-300000, and a solids content of 45% -50%.
However, when the aqueous polyurethane is used alone as a coating adhesive substance, the formed coating is easy to fall off and has poor wear resistance. And the shielding solid powder and the glass fiber are added in the application, so that the bonding firmness of the coating is further reduced more easily. In contrast, the adhesive property of the coating is obviously improved by adding cellulose esters, tackifying resin solution, curing agent and silane coupling agent. Greatly reduces the influence of shielding solid powder and glass fiber on the adhesive property of the paint, and improves the adhesive property of the water-based polyurethane. The cellulose esters further reduce the leveling property of the paint and improve the adhesion property of the paint. The tackifying resin solution is used to improve the adhesive properties of the coating.
Preferably, the cellulose esters are cellulose acetate or cellulose acetate-butyrate.
Preferably, the tackifying resin solution is obtained by dissolving an ethanol-soluble tackifying resin in ethanol.
By adopting the scheme, the tackifying resin can be compatible with a coating system, and the adhesive property of the coating is improved.
Preferably, the heavy metal is one or more of gold, silver, copper, barium, zinc, nickel, cobalt, chromium, bismuth and tungsten.
Preferably, the metal oxide is one or more of silver oxide, copper oxide, barium oxide, zinc oxide, chromium oxide, nickel oxide, cobalt oxide, bismuth oxide and tungsten oxide.
By adopting the heavy metal and the metal oxide, the radiation protection performance of the coating is improved, and the coating is safe and harmless and is suitable for being used as a radiation protection clothing fabric coating.
Preferably, the shielding solid powder is modified solid shielding powder, and is prepared by the following method:
1) Mixing shielding solid powder, isethionic acid and water, placing the mixture in a reaction, refluxing and heating the mixture at 50-60 ℃, heating the mixture for 4-6 hours, and filtering the mixture to obtain sulfonated shielding solid powder;
2) Dissolving zirconium acetylacetonate in pyridine solution, adding organosilane and sulfonated shielding solid powder, heating to 40-50 ℃, dropwise adding ammonia water while stirring, continuously stirring for 1-2h after dropwise adding, adding acetic acid, continuously stirring for 3-5h, and filtering to obtain modified solid shielding powder.
By adopting the technical scheme, the radiation protection performance of the solid shielding powder is further improved, and meanwhile, the bonding performance of the shielding solid powder is improved. The poor compatibility of the shielding solid powder with the aqueous polyurethane and the tackifying resin can affect the adhesive property of the coating. In order to improve the compatibility of the shielding solid powder and the organic polymer compound, a coupling agent is added to improve the compatibility of the shielding solid powder and the organic polymer compound, but the activity of the coupling agent is high and is easily influenced by external factors, such as water to lose activity, so that the effect is poor. The use of a large amount of water in this application affects its effectiveness. In this regard, through introducing a large amount of polar groups back at the surface of shielding powder in this application, the rethread is with sulfonation shielding solid powder and acetylacetone zirconium, organosilane reaction for modified solid shielding powder can not receive the influence of water, keep better compatibility with waterborne polyurethane, tackifying resin, thereby improve the adhesive property of coating, the application has adopted acetylacetone zirconium can further improve the radiation protection performance of coating simultaneously.
Preferably, the modified solid shielding powder is prepared from the following raw materials in parts by weight:
20-30 parts of shielding solid powder
9-15 parts of isethionic acid
25-40 parts of water
Zirconium acetylacetonate 10-15 parts
Pyridine solution 30-40 parts
3-6 parts of organosilane
4-6 parts of ammonia water
2-3 parts of acetic acid.
By adopting the technical scheme, the radiation protection performance and the bonding performance of the solid shielding powder are further improved by optimizing the use amount of the raw materials for preparing the modified solid shielding powder.
Preferably, the organosilane comprises at least one of 3-aminopropyl trimethoxysilane, 3-aminopropyl triethoxysilane, 3-glycidoxypropyl dimethoxymethylsilane, 3-glycidoxypropyl dimethyl-methoxysilane, 3-glycidoxypropyl tributoxysilane 2, 3-epoxypropyl-trimethoxysilane or 3, 4-epoxybutyl-trimethoxysilane.
By adopting the technical scheme, the activity of the modified solid shielding powder is further reduced, the modified solid shielding powder is not influenced by water, and the compatibility with the waterborne polyurethane and the tackifying resin is improved, so that the adhesive property of the coating is improved.
Preferably, the glass fiber is modified glass fiber, and is prepared by the following method:
a: placing the glass fiber in isopropanol solution, heating to 60-70 ℃, adding potassium permanganate solution, and continuing to reflux for 2-3h to obtain oxidized glass fiber;
b: mixing oxidized glass fiber, vinyl tri (beta-methoxyethoxy) silane and toluene, placing the mixture in a reaction, refluxing and heating the mixture at 70-80 ℃, heating the mixture for 4-6 hours, and filtering the mixture to obtain silanized glass fiber;
c: and mixing the silanized glass fiber, glycidyl methacrylate and ethanol, adding the mixture into a reactor, heating to 50-60 ℃, adding an initiator, reacting for 12-16 hours, filtering, washing with ethanol, and vacuum drying to obtain the modified glass fiber with the surface grafted with the glycidyl methacrylate.
The glass fiber can improve the radiation protection performance and the bonding performance of the coating, weak acid groups are often present on the surface of the glass fiber, the hydrophilicity is low, the surface tension of the coating can be influenced, the bonding force between the coating and the fabric is reduced, and the glass fiber is crisp and is used for sun-proof clothing, so that the softness of the coating is reduced. In this application, the glass fiber is oxidized and then silanized to remove the weakly acidic groups, so that the influence of the glass fiber on the surface tension of the coating is reduced. Meanwhile, in order to reduce brittleness of the glass fiber, the glycidyl methacrylate is grafted on the surface of the silanized glass fiber, so that brittleness of the glass fiber is reduced, and the coating formed by the coating is good in flexibility and adhesion.
Preferably, the modified fiber is prepared from the following raw materials in parts by weight:
15-20 parts of glass fiber
20-40 parts of isopropanol solution
3-6 parts of potassium permanganate solution
6-10 parts of vinyl tri (beta-methoxyethoxy) silane
Toluene 20-30 parts
5-12 parts of glycidyl methacrylate and 30-40 parts of ethanol
1-2 parts of an initiator.
By adopting the technical scheme, the consumption of the raw materials for preparing the modified glass fiber is optimized, the influence of groups with weak acidity can be effectively reduced, the characteristic of brittleness of the glass fiber is changed, and the flexibility of the coating is improved, so that the modified glass fiber is more suitable for radiation protection clothing.
Preferably, the tackifying resin is prepared from liquid hydrogenated rosin, liquid coumarone-indene resin, polyethylene glycol and ethanol according to the weight ratio of (5-10): (10-15): 2: (20-30) and mixing.
Through adopting above-mentioned technical scheme for the adhesive property of coating is better, and main solvent is water in this application, and then tackifying resin is insoluble in water, adds to the coating in be difficult to misce bene, and the time of standing is long, can lead to the layering of system. In contrast, in the present application, the bulk hydrogenated rosin, the liquid coumarone-indene resin, the polyethylene glycol and the ethanol are mixed, so that the tackifying resin is fully and uniformly mixed with water and the aqueous polyurethane, and can be stored for a long time without delamination.
In a second aspect, the present application provides a preparation method of an ionizing radiation protection coating for radiation protection clothing, which adopts the following technical scheme:
the preparation method of the anti-ionizing radiation coating for the anti-radiation garment comprises the following preparation steps:
s1, mixing and stirring aqueous polyurethane, cellulose esters, water and tackifying resin solution according to parts by weight, and regulating the stirring rotation speed to 1500-2000r/min to obtain a mixture A;
s2, adding shielding solid powder, glass fiber, a silane coupling agent and a curing agent into the mixture, and stirring for 20-30min to obtain a mixture B;
s3, filtering the mixture B to obtain the anti-ionization radiation coating for the anti-radiation clothes.
By adopting the technical scheme, the coating can be uniformly mixed to form a stable system, and the radiation protection performance, the bonding performance and the smoothness and the flatness of the coating formed by the coating can be further improved.
In summary, the present application has the following beneficial effects:
1. the radiation-proof performance of the coating is improved by using the shielding solid powder and the glass fiber, the use of the shielding solid powder is reduced, the adhesion performance of the coating is further prevented from being reduced by adding a large amount of shielding solid powder, and meanwhile, the adhesion performance of the coating is improved by adding the aqueous polyurethane, the water, the cellulose esters, the tackifying resin solution, the silane coupling agent and the curing agent, so that the coating formed by the coating is free from delamination after long-time use.
2. According to the application, the shielding solid powder, the isethionic acid and the water react, and then the sulfonated shielding solid powder reacts with zirconium acetylacetonate, organosilane and ammonia water, so that the compatibility of the shielding solid powder, the waterborne polyurethane and the tackifying resin is improved, and the adhesive property and the radiation protection property of the coating are improved.
3. According to the method, the glass fiber and isopropanol are heated, the potassium permanganate solution is added again, so that the glass fiber is oxidized, the oxidized glass fiber is silanized, the weakly acidic groups are removed, the influence of the glass fiber on the surface tension of the coating is reduced, the silanized glass fiber is grafted with the glycidyl methacrylate, the brittleness of the glass fiber is reduced, and the flexibility of the coating is improved.
Detailed Description
Examples
Example 1
An ionizing radiation-proof coating for radiation-proof clothing is prepared by the following method:
s1, mixing and stirring 300.00g of waterborne polyurethane, 50.00g of cellulose esters (cellulose acetate), 600.00g of water and 50.00g of tackifying resin solution, and adjusting the stirring rotation speed to 1500r/min to obtain a mixture A;
s2, adding 200.00g of shielding solid powder, 50.00g of glass fiber, 10.00g of silane coupling agent (KH-550) and 10.00g of curing agent (4, 4-dicyclohexylmethane diisocyanate) into the mixture, and stirring for 20min to obtain a mixture B;
s3, filtering the mixture B to obtain the anti-ionizing radiation coating for the anti-radiation garment.
The modulus of the aqueous polyurethane is 20kg/cm 2 The viscosity at 30℃was 80000CPS, the molecular weight was 200000, and the solids content was 45%.
The acetyl content in the cellulose acetate was 37.1%.
The tackifying resin is prepared from liquid hydrogenated rosin, liquid coumarone-indene resin, polyethylene glycol and ethanol according to the weight ratio of 5:10:2:20, wherein the content of dihydroabietic acid in the hydrogenated rosin is 75%, the acid ester is 175mgKOH/g, the viscosity of the liquid coumarone-indene resin (carbon nine liquid petroleum resin) is (coated-4) 200 seconds, the solid content is 60%, the pH value is 1, and the molecular weight of polyethylene glycol is 800.
The shielding solid powder comprises 100.00g of bismuth and 100.00g of tungsten oxide, and has an average particle diameter of 500um;
the glass fiber had an average particle diameter of 50um, a density of 2.5g/cm3, a specific strength of 1.8Gpa/gam-3, a specific modulus of 29Gpa/gam-3 and an elongation at break of 3.37%.
Examples 2-3 differ from example 1 in the type of part of the raw materials used to prepare the anti-ionizing radiation coating for radiation protective clothing, the amounts used, and the experimental parameters, and the specific differences in examples 1-3 are shown in Table 1:
table 1 raw material types, amounts and experimental parameters for the anti-ionizing radiation coating for radiation protective clothing in examples 1 to 3
The tackifying resin in example 2 is prepared from liquid hydrogenated rosin, liquid coumarone-indene resin, polyethylene glycol and ethanol according to the weight ratio of 7:13:2: 25.
In example 2, cellulose acetate butyrate contained 12% acetyl groups and 29% butyryl groups.
The tackifying resin in example 3 is prepared from liquid hydrogenated rosin, liquid coumarone-indene resin, polyethylene glycol and ethanol in a weight ratio of 10:15:2:30, mixing and preparing.
Example 4
The ionizing radiation-proof coating for radiation-proof clothing is different from example 1 in that the shielding solid powder is modified shielding solid powder, and is prepared by the following method:
1) Mixing 200.00g of shielding solid powder, 90.00g of isethionic acid and 250.00g of water, placing the mixture into a reaction, refluxing and heating the mixture at 50 ℃ for 4 hours, and filtering the mixture to obtain sulfonated shielding solid powder;
2) 100.00g of zirconium acetylacetonate is dissolved in pyridine solution, 30.00g of organosilane and sulfonated shielding solid powder are added, the temperature is raised to 40 ℃, 40.00g of ammonia water is added dropwise under stirring, stirring is continued for 1h after the dropwise addition is finished, 20.00g of acetic acid is added, stirring is continued for 3h, and filtering is carried out, so that modified solid shielding powder is obtained.
Examples 5 to 6 differ from example 4 in the type of partial raw materials, the amounts used and the experimental parameters for preparing the modified solid shielding powder, and the specific differences in examples 4 to 6 are shown in Table 2:
table 2 examples 4 to 6 of modified solid barrier powder raw material types, amounts and experimental parameters
Example 7
The ionizing radiation-proof coating for radiation-proof clothing is different from example 4 in that zirconium acetylacetonate is replaced with an equivalent amount of zirconium isopropoxide, and the types, amounts and experimental procedures of the remaining raw materials are the same as those of example 4.
Example 8
The ionizing radiation-proof coating for radiation-proof clothing is different from example 1 in that the glass fiber is modified glass fiber, and is prepared by the following method:
a: placing 150.00g of glass fiber in 200.00g of isopropanol solution, heating to 60 ℃, adding 30.00g of potassium permanganate solution, and continuing to reflux for 2 hours to obtain oxidized glass fiber;
b: mixing 60.00g of oxidized glass fiber, 60.00g of vinyl tri (beta-methoxyethoxy) silane and 200.00g of toluene, placing the mixture in a reaction, refluxing and heating the mixture at the temperature of 70-80 ℃ for 4-6 hours, and filtering the mixture to obtain silanized glass fiber;
c: and then, mixing and adding 50.00g of silanized glass fiber, 50.00g of glycidyl methacrylate and 300.00g of ethanol into a reactor, heating to 50 ℃ under reflux, adding 10.00g of initiator, reacting for 12 hours, filtering, washing with ethanol, and vacuum drying to obtain the modified glass fiber with the surface grafted with the glycidyl methacrylate.
Examples 9 to 10 differ from example 8 in the types of partial raw materials, the amounts of the raw materials used for preparing the modified glass fibers, and experimental parameters, and the specific differences of examples 8 to 10 are shown in Table 3:
TABLE 3 types of modified solid shielding powder raw materials, amounts and experimental parameters in examples 8 to 10
Example 11
An ionizing radiation-resistant coating for radiation-resistant clothing is different from example 7 in that vinyltris (. Beta. -methoxyethoxy) silane is replaced with an equivalent amount of toluene, and the types, amounts and experimental procedures of the remaining raw materials are the same as those of example 7.
Example 12
An ionizing radiation-proof coating for radiation-proof clothing is different from example 4 in that modified glass fiber was prepared in example 8, and the types, amounts and experimental procedures of the remaining raw materials are the same as those of example 7.
Comparative example
Comparative example 1
An ionizing radiation-proof coating for radiation-proof clothing is different from example 1 in that glass fiber is replaced with an equal amount of water, and the types, amounts and experimental procedures of the remaining raw materials are the same as those of example 1.
Comparative example 2
The ionizing radiation-preventing coating for radiation-protective clothing was different from example 1 in that the particle diameters of the glass fiber and the shielding solid powder were 50um, and the types of the remaining raw materials, the amounts and the experimental procedures were the same as those of example 1.
Performance test
The anti-ionizing radiation coatings for radiation protective clothing obtained in examples 1 to 12 and comparative examples 1 to 2 were applied to a fabric in an amount of 20g/m 2 Drying, and testing the fabric coated with the anti-ionizing radiation coating of the anti-radiation clothes
Detection method/test method
1. X-ray protection test: under the test condition, 120KV and 2.5 mA X-rays are adopted to perform point measurement on the fabric sheet, and shielding parameters are recorded.
2. Gamma ray proof performance test
Test conditions:
137 cs source: micro-living grade, gamma photon energy 0.661MeV, liquid state and packaged in flat plastic cylinder;
60 co source: micro-living grade, gamma photon energy 1.17MeV, liquid state and packaged in flat plastic cylinder;
241 am source: micro-living grade, gamma photon energy 0.059MeV, liquid state and packed in flat plastic cylinder;
and (3) carrying out energy spectrum measurement of a gamma radiation source on the prepared sample by adopting a NaI scintillation spectrometer, and counting the change to determine the gamma-ray shielding rate of the sample. Experimental data are shown in table 4:
TABLE 4 radiation protection performance test data for examples 1-12 and comparative examples 1-2
Abrasion resistance test: cutting the fabric coated with the anti-ionizing radiation coating of the anti-radiation clothes into sheets with the same shape and size, detecting by using a taber abrasion resistance tester, purchasing from Haohan Automation equipment Limited company in Dongguan, the power is 500W, the load is 250g, calculating the quality difference before and after abrasion, and the more the loss is, the more unstable the adhesion is.
Softness test: adopting a softness tester, and the conditions are as follows: sample rack swing speed: w=2pi/min, sample size 20mm×100mm, maximum swing angle 45 °, weight cell center distance rl=50 mm r2=100 mm, working power supply: the AC220V50Hz 30W, experimental data are shown in Table 5.
Table 5 data for abrasion resistance and softness performance tests for examples 1-12 and comparative examples 1-2
By combining examples 1-1 and comparative examples 1-2 with tables 4 and 5, the coating prepared in the application can improve the radiation protection performance of the radiation protection clothing, and simultaneously has the characteristics of good adhesion and good softness.
The comparative example 1 has poor radiation protection performance and adhesion performance and good flexibility; the radiation protection and flexibility were poor in comparative example 2.
The radiation protection, adhesion and softness properties of examples 4-6 and examples 8-9 are all significantly improved.
The radiation protection, adhesion and softness properties of example 12 are all best among all examples.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (10)

1. The ionizing radiation resistant coating for the radiation resistant clothing is characterized by being prepared from the following raw materials in parts by weight:
20-30 parts of shielding solid powder
5-10 parts of glass fiber
30-50 parts of aqueous polyurethane
5-15 parts of cellulose esters
60-80 parts of water
5-10 parts of tackifying resin solution
1-3 parts of silane coupling agent
1-2 parts of curing agent
The shielding solid powder comprises metal and metal oxide, and has an average particle size of 150-300um;
the average particle size of the glass fiber is 50-100um.
2. The ionizing radiation-resistant coating for radiation-resistant clothing according to claim 1, wherein the shielding solid powder is a modified solid shielding powder, and is prepared by the following method:
1) Mixing shielding solid powder, isethionic acid and water, placing the mixture in a reaction, refluxing and heating the mixture at 50-60 ℃, heating the mixture for 4-6 hours, and filtering the mixture to obtain sulfonated shielding solid powder;
2) Dissolving zirconium acetylacetonate in pyridine solution, adding organosilane and sulfonated shielding solid powder, heating to 40-50 ℃, dropwise adding ammonia water while stirring, continuously stirring for 1-2h after dropwise adding, adding acetic acid, continuously stirring for 3-5h, and filtering to obtain modified solid shielding powder.
3. The ionizing radiation-proof coating for radiation-proof clothing according to claim 2, wherein the modified solid shielding powder is prepared from the following raw materials in parts by weight:
20-30 parts of shielding solid powder
9-15 parts of isethionic acid
Toluene 25-40 parts
Zirconium acetylacetonate 10-15 parts
Pyridine solution 30-40 parts
3-6 parts of organosilane
4-6 parts of ammonia water
2-3 parts of acetic acid.
4. An ionizing radiation resistant coating for radiation protective clothing according to claim 3, wherein: the organosilane comprises at least one of 3-aminopropyl trimethoxysilane, 3-aminopropyl triethoxysilane, 3-glycidoxypropyl dimethoxy methylsilane, 3-glycidoxypropyl dimethyl-methoxysilane, 3-glycidoxypropyl tributoxysilane 2, 3-epoxypropyl-trimethoxysilane or 3, 4-epoxybutyl-trimethoxysilane.
5. The ionizing radiation resistant coating for radiation protective clothing according to claim 1, wherein the glass fiber is a modified glass fiber prepared by the following method:
a: placing the glass fiber in isopropanol solution, heating to 60-70 ℃, adding potassium permanganate solution, and continuing to reflux for 2-3h to obtain oxidized glass fiber;
b: mixing oxidized glass fiber, vinyl tri (beta-methoxyethoxy) silane and toluene, placing the mixture in a reaction, refluxing and heating the mixture at 70-80 ℃, heating the mixture for 4-6 hours, and filtering the mixture to obtain silanized glass fiber;
c: and mixing the silanized glass fiber, glycidyl methacrylate and ethanol, adding the mixture into a reactor, heating to 50-60 ℃, adding an initiator, reacting for 12-16 hours, filtering, washing with ethanol, and vacuum drying to obtain the modified glass fiber with the surface grafted with the glycidyl methacrylate.
6. The ionizing radiation resistant coating for radiation protective clothing according to claim 5, wherein the modified fiber is prepared from the following raw materials in parts by weight:
15-20 parts of glass fiber
20-40 parts of isopropanol solution
3-6 parts of potassium permanganate solution
6-10 parts of vinyl tri (beta-methoxyethoxy) silane
Toluene 20-30 parts
5-12 parts of glycidyl methacrylate
Ethanol 30-40 parts
1-2 parts of an initiator.
7. An ionizing radiation protective coating for radiation protective clothing according to claim 1, wherein: the cellulose esters are cellulose acetate or cellulose acetate-butyrate.
8. An ionizing radiation protective coating for radiation protective clothing according to claim 1, wherein: the aqueous polyurethane has a modulus of 20-30kg/cm < 2 >, a viscosity of 80000-120000CPS at 30 ℃, a molecular weight of 200000-300000 and a solid content of 45% -50%.
9. An ionizing radiation resistant coating for radiation protective clothing according to claim 7, wherein: the tackifying resin is prepared from liquid hydrogenated rosin, liquid coumarone-indene resin, polyethylene glycol and ethanol according to the weight ratio of (5-10): (10-15): 2: (20-30) and mixing.
10. A method for preparing an anti-ionizing radiation coating for radiation-proof clothing according to any one of claims 1 to 9, comprising the following preparation steps:
s1, mixing and stirring aqueous polyurethane, cellulose esters, water and tackifying resin solution according to parts by weight, and regulating the stirring rotation speed to 1500-2000r/min to obtain a mixture A;
s2, adding shielding solid powder, glass fiber, a silane coupling agent and a curing agent into the mixture, and stirring for 20-30min to obtain a mixture B;
s3, filtering the mixture B to obtain the anti-ionization radiation coating for the anti-radiation clothes.
CN202311201319.6A 2023-09-18 2023-09-18 Ionizing radiation-resistant coating for radiation-resistant clothing and preparation method thereof Pending CN117286724A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118048105A (en) * 2024-04-16 2024-05-17 潍坊市兴源防水材料股份有限公司 Radiation-proof waterproof coating for medical laboratory

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118048105A (en) * 2024-04-16 2024-05-17 潍坊市兴源防水材料股份有限公司 Radiation-proof waterproof coating for medical laboratory

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