A method for preparing self-cleaning multifunctional radiation-proof textile

Abstract

The invention belongs to the technical field of multifunctional material preparation, and specifically relates to a method for preparing a self-cleaning multifunctional radiation-proof textile. A surface layer material, a middle layer material and an inner layer material are mixed in sequence, and then the surface layer, the middle layer and the inner layer are printed respectively. The prepared self-cleaning multifunctional radiation-proof textile has a waterproof surface layer, is oil-proof, stain-proof, sweat-proof and breathable, a middle layer that can block X-rays and gamma rays, and absorbs volatile substances of nuclear radioactive isotopes, and has the effects of antibacterial, flame retardant, instant deodorizing, antistatic, UV protection, far infrared protection and electromagnetic wave shielding; the inner layer has a phase change function and a continuous cooling function, is comfortable to wear, and can be used for different household products according to the design of different fabrics.

Description

Technical field:

[0001] The invention belongs to the technical field of multifunctional material preparation, and in particular relates to a method for preparing a self-cleaning multifunctional radiation-proof textile. Background technology:

[0002] In the 21st century, mankind has entered a high-speed information society. Electromagnetic radiation waves are a quick way to transmit information. A large number of television transmitters, satellite communication stations, microwave relay stations, and mobile launch devices have sprung up. Radioactive waste is considered the most dangerous environmental pollutant due to its long-lasting hazards. The volume of radioactive wastewater and the proportion of radioactive substances contained in the total amount of radioactive waste are very large. Therefore, how to safely and effectively treat radioactive wastewater has become the key to affecting the sustainable development of nuclear energy. Radioactive wastewater refers to various wastewaters discharged from nuclear power plants, nuclear fuel pre-processing and spent fuel post-processing, and the application of radioactive isotopes. The types and concentrations of radionuclides, acidity, and other chemical components contained in different wastewaters vary greatly. In the wastewater of nuclear power plants, the wastewater in the front part of the nuclear fuel cycle, the nuclide Tritium is a radioactive hydrogen isotope, which exists in the form of tritiated water in the water. The radioactive isotope cesium-137Cs-137 has a half-life of about 30 years, and the radioactive isotope strontium-90Sr-90 may cause a variety of diseases; the radioactive isotope iodine-1291-129 has a half-life of about 15.7 million years; the radioactive isotope carbon-14C-14 has a half-life of about 5730 years. There are potential risks in the long-term accumulation, and nuclear wastewater may also contain other radioactive nuclides, such as cobalt 60, plutonium, cesium, strontium, etc. The polluted marine resources discharged into the sea by nuclear wastewater have not received limited environmental protection treatment. The nuclear radioactive isotopes in the ocean are volatile substances, which not only pollute the ocean, but also exist in the soil and air with evaporation. Since radiation waves are invisible and intangible, radiation is a high-energy electromagnetic wave with a very short wavelength. When it passes through the human body at a certain distance, it will ionize the atoms or molecules in the cells of the human body and produce free radicals, thereby breaking the bonds or ruptures of the DNA chains in the cells and causing cancer. The strength of radioactivity depends on the degree of ionization and the length of exposure time. People will not feel uncomfortable after short-term exposure, but once accumulated into a disease, it is difficult to treat, so the scientific community calls it an "invisible killer." Radiation wave pollution has become the largest source of pollution after air, water, and noise pollution.

[0003] The hazards of electromagnetic radiation have gradually been recognized by people. In order to reduce or eliminate the hazards caused by electromagnetic radiation to the human body, various radiation-proof clothing has emerged and developed rapidly. As early as the 1920s, some developed countries such as Britain, Japan, Canada, Sweden, the United States, Germany, and France began to study special protective clothing and fabrics. In the 1960s, after the establishment of international standards for electromagnetic radiation protection, shielding materials such as metal wire and clothing blended fabrics appeared, followed by metal fiber blended fabrics, electroplated fabrics, and chemically plated fabrics. These materials are mainly based on reflection, have secondary environmental pollution, and are not suitable for wearing. In the 1980s, North American Airlines in the United States successfully developed protective clothing and helmets to prevent radar detection from being discovered. This protective clothing and helmet are made of microwave absorbing materials. From the late 1980s to the early 1990s, Britain, France, Germany, Sweden, the United States and other countries set off a wave of housewives wearing shielding aprons and shielding gowns, and teenagers wearing shielding vests and shielding suits. These shielding suits are mainly aimed at the radiation hazards caused by household appliances, such as microwave ovens, induction cookers, computers, vacuum cleaners, etc. From then on, anti-electromagnetic radiation shielding clothing began to enter households and become civilian clothing.

[0004] In the early 1960s, my country began to study electromagnetic radiation protective clothing, and in the 1970s, it began to formally produce shielding fabrics made of copper wire and silk blends. In the late 1980s, with the development of international electromagnetic radiation protection materials and clothing, some scientific research institutions and enterprises successively carried out research on metallized fiber protective fabrics, and successfully developed stainless steel softened fiber fabrics and clothing, special process coated shielding fabrics and clothing, and then began to study protective clothing for operators of radar, microwave heating, microwave therapy, satellite ground stations, microwave communications and other systems.

[0005] However, the existing radiation protection materials at home and abroad are mainly based on reflection, which causes secondary environmental pollution and is not suitable for wearing. Moreover, the single function of shielding radiation is X-ray, and it does not have the functions of shielding γ-rays, antibacterial, flame retardant, instant deodorization, antistatic, UV protection, phase change function, continuous cooling, far infrared and shielding electromagnetic waves. For example, the existing lead protective clothing, lead ions will cause secondary damage to the human body, and the lead protective clothing is heavy to wear, flat, wide, stuffy and airtight, easy to breed bacteria, and no comfort. With the continuous deterioration of the living environment, people have thought of adding new scientific and technological materials to various textile fabrics to improve their performance. Barium sulfate is a new material for radiation protection, which has the advantages of high density, light weight, strong acid resistance, etc. Its performance in absorbing x-rays and γ-rays is better than that of ordinary metal lead, etc. This is due to the barium element in barium sulfate. Barium is a heavy metal element. Like metal lead, its core mass is large. During the collision of rays in its core, the energy of the rays is easily absorbed by these heavy metal cores. It makes it difficult for rays to penetrate them. Therefore, they have the function of blocking radiation (mainly X-rays and gamma rays), and barium sulfate itself is harmless to the human body, avoiding the secondary damage of lead ions to the human body. However, the radiation blocking effect of ordinary barium sulfate is difficult to meet the needs of various fields at the same time.

[0006] Attapulgite is a magnesium aluminum silicate clay mineral with a layered chain structure. It has a special fiber structure and developed internal pores that give it a large specific surface area. In addition, there is an isomorphic substitution of Al3+ for Si4+ and Mg2+ for Fe3+ and A13+ in its structure, which leads to a permanent negative charge and multiple adsorption centers on the surface of the attapulgite. It has a good adsorption effect on radioactive nuclides SR, CS, CO, U and heavy metal ions. In the production of nuclear fuel, the purification of various metals and the cleaning of equipment will produce dilute nitric acid-hydrofluoric acid wastewater containing a small amount of uranium. According to the concentration of radioactive nuclides contained in nuclear wastewater, it can be divided into high-level, medium-level and low-level radioactive wastewater. According to the type of radioactivity contained in the wastewater, it can be divided into three types of radioactive wastewater: α, β and γ. In addition to radioactive substances, the wastewater discharged from the sewage outlet also contains a small amount of organic phase sulfonic acid. The adsorption method uses porous solid adsorbents to treat radioactive wastewater so that the radioactive nuclides contained in it are adsorbed on the adsorbent, thereby achieving the purpose of removal. The adsorption method has the advantages of simple operation, low operating cost, and good treatment effect. Especially when treating low-concentration nuclear wastewater, adsorption technology has more advantages. It is a relatively simple and effective means to remove radioactive nuclides and heavy metal ions in aqueous solution. Attapulgite also has the advantages of low cost and simple regeneration. Therefore, the use of attapulgite to remove nuclides and heavy metal ions in radioactive wastewater has broad application prospects. However, directly using powdered attapulgite to treat nuclear isotopes will weaken the role of attapulgite. Summary of the invention:

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a method for preparing a self-cleaning multifunctional radiation-proof textile. The prepared self-cleaning multifunctional radiation-proof textile has a surface layer that is waterproof, oil-proof, stain-proof, sweat-proof and breathable, a middle layer that blocks X-rays and gamma rays, and absorbs nuclear radioactive isotopes that are volatile substances. It also has antibacterial, flame-retardant, instant deodorizing, anti-static, UV-proof, far-infrared-proof and electromagnetic wave-shielding properties, and an inner layer that has a phase change function and a continuous cooling function, and is comfortable to wear.

[0008] To achieve the above object, the process of preparing the self-cleaning multifunctional radiation-proof textile of the present invention comprises five steps of mixing the surface material, mixing the middle material, mixing the inner material, printing the surface layer, and printing the middle and inner layers:

[0009] (1) Mixing the surface material: First, rinse the mixing tank with pure water, prepare an aqueous solution according to the proportion of the fabric to be processed, and add the weighed C6 three-proof finishing agent, cross-linking agent, thickener and adhesive in sequence, and stir the mixture for 30-60 minutes;

[0010] (2) Mix the middle layer materials, rinse the mixing tank with pure water, prepare an aqueous solution in proportion according to the fabric to be processed, add weighed nano-precipitated barium sulfate, acidic surface-modified attapulgite, nano-zinc oxide, titanium dioxide, graphene, cross-linking agent, thickener, adhesive and glue in sequence, and stir the mixture for 30-60 minutes;

[0011] (3) Mixing the inner layer material: Rinse the mixing tank with pure water, prepare an aqueous solution in proportion according to the fabric to be processed, add the weighed PCM-28 phase change emulsion, cold feeling finishing agent, crosslinking agent, special non-reactive cold feeling silicone oil, thickener and adhesive in sequence, and stir the mixture for 30-60 minutes;

[0012] (4) Surface printing: The fabric is spread on the full-bottom net of a printing machine or coating machine, with the front side of the fabric facing upward, and the mixed surface material is pulped, pressed and fully printed on the fabric, and then shaped and dried to obtain the fabric after surface printing;

[0013] (5) Middle layer and inner layer printing: The surface-printed fabric is placed on two full-bottom nets of a printing machine or coating machine, with the reverse side of the fabric facing up. The mixed middle layer material is first pulped and pressed on the first full-bottom net for full-bottom printing. The mixed inner layer material is then pulped and pressed on the second full-bottom net for full-bottom printing and finalizing and drying. This completes the preparation of self-cleaning multifunctional radiation-proof textiles.

[0014] As a further technical solution of the present invention, in step (1), the weight ratio of the C6 triple-proof finishing agent, the crosslinking agent, the thickener and the adhesive is 6-10:1:2:2.

[0015] As a further technical solution of the present invention, in step (2), the weight ratio of the nano-precipitated barium sulfate, acidic surface-modified attapulgite, nano-zinc oxide, titanium dioxide, graphene, cross-linking agent, thickener, adhesive and glue is 10-16:4-8:2-3:2:2:1:1:1-2:1-2.

[0016] As a further technical solution of the present invention, the weight ratio of the PCM-28 phase change emulsion, the cold feeling finishing agent, the crosslinking agent, the special non-reactive cold feeling silicone oil, the thickener and the adhesive in step (3) is 6-10:4-8:1:0.6-1:1:1.

[0017] As a further technical solution of the present invention, the working conditions of the printing machine or coating machine in steps (4) and (5) are: the speed is 22-28 m / min, the temperature is 155°C-160°C, and the fabric shaping and drying temperature is 160°C before the machine stops.

[0018] Compared with the prior art, the invention adopts an integrated two-step method to prepare the self-cleaning multifunctional radiation-proof textile, thereby avoiding the secondary harm of lead ions in traditional lead protective clothing to the human body, and solving the problems that the lead protective clothing is heavy to wear, stiff, wide, stuffy and airtight, easy to breed bacteria and lacks comfort. The prepared self-cleaning multifunctional radiation-proof textile has a waterproof surface layer, is oil-proof, anti-fouling, sweat-proof and breathable, a middle layer that can block X-rays and gamma rays, and absorb volatile substances of nuclear radioactive isotopes, and has the effects of antibacterial, flame retardant, instant deodorizing, antistatic, UV protection, far infrared protection and electromagnetic wave shielding; the inner layer has a phase change function and a continuous cooling function, and is comfortable to wear. The textile can be used for household curtains, nuclear radiation protective clothing, special arms protective clothing, nuclear, biological and chemical contamination protective clothing, outdoor tents and umbrellas, protective masks, medical protective clothing, protective work clothes, health underwear and outerwear, children's clothing, children's shoes, interior decoration and seats of magnetic levitation, high-speed rail and high-end cars, high-end sofa covers, and home products such as bedding and mattresses. Specific implementation method:

[0019] The present invention will be further described below by way of examples.

[0020] Embodiment 1:

[0021] The process of preparing the self-cleaning multifunctional radiation-proof textile in this embodiment includes the following five steps:

[0022] (1) Mixing the surface material: Weigh 30 parts by weight of C6 three-proofing finishing agent, 5 parts by weight of cross-linking agent, 10 parts by weight of thickener, and 10 parts by weight of adhesive, add the above materials into a mixing tank rinsed with pure water, and mix and stir for 30-60 minutes to obtain a mixed surface material;

[0023] (2) Weigh 50 parts by weight of nano-precipitated barium sulfate, 20 parts by weight of acidic surface-modified attapulgite, 10 parts by weight of nano-zinc oxide, 10 parts by weight of titanium dioxide, 10 parts by weight of graphene, 5 parts by weight of a cross-linking agent, 5 parts by weight of a thickener, 5 parts by weight of an adhesive, and 5 parts by weight of a glue, and sequentially add the above materials into a stirring tank rinsed with pure water, and mix and stir for 30-60 minutes to obtain a mixed middle-layer material;

[0024] (3) Weigh 30 parts by weight of PCM-28 phase change emulsion, 20 parts by weight of cold feeling finishing agent, 5 parts by weight of crosslinking agent, 3 parts by weight of special non-reactive cold feeling silicone oil, 5 parts by weight of thickener, and 5 parts by weight of adhesive, and add the above materials to a mixing tank rinsed with pure water in sequence, and mix and stir for 30-60 minutes to obtain a mixed inner layer material;

[0025] (4) Use a printing machine or coating machine to print the surface layer. Prepare a full bottom net before production → Spread the cloth with the front side facing up → Beat and press the full bottom printed fabric → Machine speed 22-28 m / min → Blow dry → Overheat (155℃-160℃) and do not lower than this temperature → Set and dry at 160℃ → Get off the machine → Quality inspection and preparation for circulation of the middle layer and inner layer full bottom printing;

[0026] (5) Use a printing machine or coating machine to print the middle layer and the inner layer. Prepare two full-bottom nets before production → Spread the cloth with the reverse side facing up → Use the first net to print the middle layer functional slurry and pressurize the full bottom to obtain a 0.35mm thick middle layer fabric → Use the second net to print the inner layer functional slurry and pressurize the full bottom to print the fabric → Machine speed 22-28 m / min → Blow dry → Overheat (155℃-160℃) and do not exceed this temperature → Set and dry at 160℃ → Get off the machine → Quality inspection to check the fabric function before delivery.

[0027] The functional indicators of the self-cleaning multifunctional radiation-proof textile prepared in this embodiment are:

[0028] The surface is waterproof and oil-proof at level 3-4, and has good air permeability, with a breathability rate of 76%;

[0029] The fabric overall detection middle layer blocks X-rays and gamma rays, with an initial amount of 1mmpb equivalent and a blocking rate of 90%;

[0030] The electromagnetic wave absorption level of the middle layer of the fabric as a whole is tested to be above -10dB, which can attenuate more than 91% of the incident electromagnetic waves. The electromagnetic wave absorption peak moves to low frequency as the thickness of the printed coating increases.

[0031] The overall fabric testing shows that the UV shielding rate is 93%;

[0032] The elimination rate of the fabric overall detection absorption nuclear isotope initial concentration of 100ppm was 86%;

[0033] The overall fabric test eliminated ammonia odor, with an initial concentration of 100ppm, and the elimination rate reached 78% in 10 minutes. The elimination rate of acetic acid odor was 92% in 10 minutes with an initial concentration of 100ppm. The elimination rate of oxalic acid odor was 95% in 10 minutes with an initial concentration of 100ppm. The elimination rate of aging odor was 86% in 10 minutes with an initial concentration of 100ppm.

[0034] GB / T 20944.3-2008 ATCC6538 Staphylococcus aureus>95, Escherichia coli 8099>83%, ATCC10231 Candida albicans>96%, in line with the standard requirements;

[0035] The continuous cooling index of PCM phase change detected in the inner layer of fabric is shown in the following table.

[0036] A B C unit Printing area 85％ 95％ 100％ ％ Dissolving temperature 27.6 28.1 27.8 ℃ Phase change heat storage capacity 16.7 17.5 19.1 Enthalpy change J / g Q-max cold value 0.31 0.33 0.37

[0037] Embodiment 2:

[0038] The process of preparing the self-cleaning multifunctional radiation-proof textile in this embodiment comprises the following steps:

[0039] (1) Mixing the surface material: Weigh 40 parts by weight of C6 three-proofing finishing agent, 5 parts by weight of cross-linking agent, 10 parts by weight of thickener, and 10 parts by weight of adhesive, add the above materials into a mixing tank rinsed with pure water, and mix and stir for 30-60 minutes to obtain a mixed surface material;

[0040] (2) Weigh 60 parts by weight of nano-precipitated barium sulfate, 30 parts by weight of acidic surface-modified attapulgite, 15 parts by weight of nano-zinc oxide, 10 parts by weight of titanium dioxide, 10 parts by weight of graphene, 5 parts by weight of a cross-linking agent, 5 parts by weight of a thickener, 5 parts by weight of an adhesive, and 5 parts by weight of a glue, and sequentially add the above materials into a stirring tank rinsed with pure water, and mix and stir for 30-60 minutes to obtain a mixed middle-layer material;

[0041] (3) Weigh 40 parts by weight of PCM-28 phase change emulsion, 30 parts by weight of cold feeling finishing agent, 5 parts by weight of crosslinking agent, 3 parts by weight of special non-reactive cold feeling silicone oil, 5 parts by weight of thickener, and 5 parts by weight of adhesive, and add the above materials into a mixing tank rinsed with pure water in sequence, and mix and stir for 30-60 minutes to obtain a mixed inner layer material;

[0042] (4) Use a printing machine or coating machine to print the surface layer. Prepare a full bottom net before production → Spread the cloth with the front side facing up → Beat and press the full bottom printed fabric → Machine speed 22-28 m / min → Blow dry → Overheat (155℃-160℃) and do not lower than this temperature → Set and dry at 160℃ → Get off the machine → Quality inspection and preparation for circulation of the middle layer and inner layer full bottom printing;

[0043] (5) Use a printing machine or coating machine to print the middle layer and the inner layer. Prepare two full-bottom nets before production → Spread the cloth with the reverse side facing up → Use the first net to print the middle layer functional slurry and pressurize the full bottom to obtain a 0.5mm thick middle layer fabric → Use the second net to print the inner layer functional slurry and pressurize the full bottom to print the fabric → Machine speed 22-28 m / min → Blow dry → Overheat (155℃-160℃) and the temperature should not be lower than this → Set and dry at 160℃ → Get off the machine → Quality inspection to check the fabric function before delivery.

[0044] The functional indicators of the self-cleaning multifunctional radiation-proof textile prepared in this embodiment are:

[0045] The surface is waterproof and oil-proof at level 4, and has good air permeability, with a breathability rate of 79%;

[0046] The fabric overall detection middle layer blocks X-rays and gamma rays, with an initial amount of 1mmpb equivalent and a blocking rate of 93%;

[0047] The electromagnetic wave absorption level of the middle layer of the fabric as a whole is tested to be above -10dB, which can attenuate more than 94% of the incident electromagnetic waves. The electromagnetic wave absorption peak moves to low frequency as the thickness of the printed coating increases.

[0048] The overall fabric testing shows that the UV shielding rate is 96%;

[0049] The elimination rate of the fabric overall detection absorption nuclear isotope initial concentration of 100ppm is 93%;

[0050] The overall fabric test eliminated ammonia odor, with an initial concentration of 100ppm, and the elimination rate reached 86% in 10 minutes. The elimination rate of acetic acid odor was 94% in 10 minutes with an initial concentration of 100ppm. The elimination rate of oxalic acid odor was 95% in 10 minutes with an initial concentration of 100ppm. The elimination rate of aging odor was 91% in 10 minutes with an initial concentration of 100ppm.

[0051] GB / T 20944.3-2008 ATCC6538 Staphylococcus aureus>96, Escherichia coli 8099>88%, ATCC10231 Candida albicans>97%, in line with the standard requirements;

[0052] The continuous cooling index of PCM phase change detected in the inner layer of fabric is shown in the following table.

[0053] A B C unit Printing area 85％ 95％ 100％ ％ Dissolving temperature 27.6 28.1 27.8 ℃ Phase change heat storage capacity 19.3 21.1 23.6 Enthalpy change J / g Q-max cold value 0.4 0.43 0.47

[0054] Embodiment 3:

[0055] The process of preparing the self-cleaning multifunctional radiation-proof textile in this embodiment includes the following five steps:

[0056] (1) Mixing the surface material: Weigh 50 parts by weight of C6 three-proofing finishing agent, 5 parts by weight of cross-linking agent, 10 parts by weight of thickener, and 10 parts by weight of adhesive, add the above materials into a mixing tank rinsed with pure water in sequence, and mix and stir for 30-60 minutes to obtain a mixed surface material;

[0057] (2) Weigh 80 parts by weight of nano-precipitated barium sulfate, 40 parts by weight of acidic surface-modified attapulgite, 20 parts by weight of nano-zinc oxide, 10 parts by weight of titanium dioxide, 10 parts by weight of graphene, 5 parts by weight of a cross-linking agent, 5 parts by weight of a thickener, 10 parts by weight of an adhesive, and 10 parts by weight of a glue, and sequentially add the above materials into a stirring tank rinsed with pure water, and mix and stir for 30-60 minutes to obtain a mixed middle-layer material;

[0058] (3) Weigh 50 parts by weight of PCM-28 phase change emulsion, 40 parts by weight of cold feeling finishing agent, 5 parts by weight of crosslinking agent, 5 parts by weight of special non-reactive cold feeling silicone oil, 5 parts by weight of thickener, and 5 parts by weight of adhesive, and add the above materials to a mixing tank rinsed with pure water in sequence, and mix and stir for 30-60 minutes to obtain a mixed inner layer material;

[0059] (4) Use a printing machine or coating machine to print the surface layer. Prepare a full bottom net before production → Spread the cloth with the front side facing up → Beat and press the full bottom printed fabric → Machine speed 22-28 m / min → Blow dry → Overheat (155℃-160℃) and do not lower than this temperature → Set and dry at 160℃ → Get off the machine → Quality inspection and preparation for circulation of the middle layer and inner layer full bottom printing;

[0060] (5) Use a printing machine or coating machine to print the middle layer and the inner layer. Prepare two full-bottom nets before production → Spread the cloth with the reverse side facing up → Use the first net to print the middle layer functional slurry and pressurize the full bottom to obtain a 1mm thick middle layer fabric → Use the second net to print the inner layer functional slurry and pressurize the full bottom fabric → Machine speed 22-28 m / min → Blow dry → Overheat (155℃-160℃) and the temperature should not be lower than this → Set and dry at 160℃ → Get off the machine → Quality inspection to check the fabric function before delivery.

[0061] The functional indicators of the self-cleaning multifunctional radiation-proof textile prepared in this embodiment are:

[0062] The surface is waterproof and oil-proof at level 4 or above, and has good air permeability, with a permeability rate of 79%;

[0063] The fabric overall detection middle layer blocks X-rays and gamma rays, with an initial amount of 1mmpb equivalent and a blocking rate of 99%;

[0064] The electromagnetic wave absorption level of the middle layer of the fabric as a whole is tested to be above -10dB, which can attenuate more than 99% of the incident electromagnetic waves. The electromagnetic wave absorption peak moves to low frequency as the thickness of the printed coating increases.

[0065] The overall fabric testing shows that the UV shielding rate is 100%;

[0066] The elimination rate of the fabric overall detection absorption nuclear isotope initial concentration of 100ppm is 99%;

[0067] The overall fabric test eliminates ammonia odor, with an initial concentration of 100ppm and an elimination rate of 90% in 10 minutes; eliminates acetic acid odor, with an initial concentration of 100ppm and an elimination rate of 97% in 10 minutes; eliminates oxalic acid odor, with an initial concentration of 100ppm and an elimination rate of 95% in 10 minutes; eliminates aging odor, with an initial concentration of 100ppm and an elimination rate of 93% in 10 minutes;

[0068] GB / T 20944.3-2008 ATCC6538 Staphylococcus aureus>98, Escherichia coli 8099>90%, ATCC10231 Candida albicans>97%, in line with the standard requirements;

[0069] The continuous cooling index of PCM phase change detected in the inner layer of fabric is shown in the following table.

[0070] A B C unit Printing area 85％ 95％ 100％ ％ Dissolving temperature 27.6 28.1 27.8 ℃ Phase change heat storage capacity 24.3 24.8 25.6 Enthalpy change J / g Q-max cold value 0.5 0.53 0.6

[0071] The C6 triple-proof finishing agent, cross-linking agent, thickener, adhesive, nano-precipitated barium sulfate, acidic surface-modified attapulgite, nano-zinc oxide, graphene, cross-linking agent, thickener, adhesive, glue, PCM-28 phase change emulsion, cold-feel finishing agent, cross-linking agent, special non-reactive cold-feel silicone oil, thickener, adhesive, printing machine and coating machine involved in this article are all commercially available products.

Claims

1. A method for preparing a self-cleaning multifunctional radiation-proof textile, characterized in that: It includes five steps: mixing the surface material, mixing the middle material, mixing the inner material, printing the surface layer, and printing the middle and inner layers: (1) Mixing the surface material: First, rinse the mixing tank with pure water, prepare an aqueous solution according to the proportion of the fabric to be processed, and add the weighed C6 three-proof finishing agent, cross-linking agent, thickener and adhesive in sequence, and stir the mixture for 30-60 minutes; (2) Mix the middle layer materials, rinse the mixing tank with pure water, prepare an aqueous solution in proportion according to the fabric to be processed, add weighed nano-precipitated barium sulfate, acidic surface-modified attapulgite, nano-zinc oxide, titanium dioxide, graphene, cross-linking agent, thickener, adhesive and glue in sequence, and stir the mixture for 30-60 minutes; (3) Mixing the inner layer material: Rinse the mixing tank with pure water, prepare an aqueous solution in proportion according to the fabric to be processed, add the weighed PCM-28 phase change emulsion, cold feeling finishing agent, crosslinking agent, special non-reactive cold feeling silicone oil, thickener and adhesive in sequence, and stir the mixture for 30-60 minutes; (4) Surface printing: The fabric is spread on the full-bottom net of a printing machine or coating machine, with the front side of the fabric facing upward, and the mixed surface material is pulped, pressed and fully printed on the fabric, and then shaped and dried to obtain the fabric after surface printing; (5) Middle layer and inner layer printing: The surface-printed fabric is placed on two full-bottom nets of a printing machine or coating machine, with the reverse side of the fabric facing up. The mixed middle layer material is first pulped and pressed on the first full-bottom net for full-bottom printing. The mixed inner layer material is then pulped and pressed on the second full-bottom net for full-bottom printing and finalizing and drying. This completes the preparation of self-cleaning multifunctional radiation-proof textiles.

2. The method for preparing the self-cleaning multifunctional radiation-proof textile according to claim 1, characterized in that: In step (1), the weight ratio of the C6 triple-proof finishing agent, the crosslinking agent, the thickener and the adhesive is 6-10:1:2:

2.

3. The method for preparing the self-cleaning multifunctional radiation-proof textile according to claim 1, characterized in that: In step (2), the weight ratio of the nano-precipitated barium sulfate, acidic surface-modified attapulgite, nano-zinc oxide, titanium dioxide, graphene, cross-linking agent, thickener, adhesive and glue is 10-16:4-8:2-3:2:2:1:1:1-2:1-2.

4. The method for preparing the self-cleaning multifunctional radiation-proof textile according to claim 1, characterized in that: In step (3), the weight ratio of the PCM-28 phase change emulsion, the cold feeling finishing agent, the crosslinking agent, the special non-reactive cold feeling silicone oil, the thickener and the adhesive is 6-10:4-8:1:0.6-1:1:

1.

5. The method for preparing the self-cleaning multifunctional radiation-proof textile according to claim 1, characterized in that: The working conditions of the printing machine or coating machine in steps (4) and (5) are: a machine speed of 22-28 m / min, a temperature of 155°C-160°C, and a fabric shaping and drying temperature of 160°C before the machine stops.