CN105999338B - A kind of air sterillization material for core and preparation method thereof - Google Patents

Abstract

The present invention relates to a kind of air sterillization material for core and preparation method thereof.The air sterillization material for core is that the safe and efficient poly- iodine disinfectant of height is immobilized generated to reticular fibre surface.The air sterillization material for core is the purpose contacted with bacterium by the poly- iodide ion of height of material surface to realize sterilizing, have the characteristics that safe and efficient, tasteless, noresidue, not burn into stability height, long service life, at low cost, can be used for hospital, family, public place, in the various vehicles etc. confined spaces air sterillization, especially suitable for air sterillization under the conditions of presence of people.The preparation method of the air sterillization material for core is using reticular fibre as carrier, obtained from high poly- iodide ion is bonded to fiber surface as organosilicon quaternary ammonium salt.The air sterillization material for core may fitted in the equipment such as air-conditioning, air cleaner and carry out continuous sterilization to room air.

Description

A kind of air disinfection filter element material and preparation method thereof

technical field

The invention relates to an air disinfection filter element material and a preparation method thereof, in particular to an air disinfection filter element material in which high polyiodide ions are bonded to the fiber surface through chemical bonds and a preparation method thereof.

Background technique

The air in public places is the main medium for disease transmission, so air disinfection in public places under the condition of people is an important guarantee for public health safety.

There are several common methods of air disinfection at present:

Method 1: Physical Air Disinfection Method

(1) Ultraviolet air disinfection: Ultraviolet rays of 250nm to 270nm have a strong bactericidal effect, and the sterilizing effect of ultraviolet lamps is directly related to the irradiation time and irradiation intensity. Therefore, when using ultraviolet rays to sterilize, there must be sufficient sterilizing time and irradiation Strength to ensure effective germ killing. Since the irradiation time of ultraviolet disinfection is long, and long-term exposure to ultraviolet rays is harmful to the human body, ultraviolet air disinfection does not have the ability to disinfect air in the presence of people.

(2) Plasma air disinfection: Plasma is a new type of disinfectant and can also be used for air disinfection. Plasma screens designed by Gregory Fridman[US:20130330229A1] can kill bacteria and viruses in the air within milliseconds. However, some components in the plasma, such as gamma rays and beta particles, will cause serious damage to the human body, and are not suitable for air disinfection in the presence of people.

Method 2: Chemical Air Disinfection Method

(1) Peracetic acid method: peracetic acid is a broad-spectrum, efficient and cheap sterilant, which was widely used in the fight against SARS. Peracetic acid can be used for disinfection and sterilization of medical devices, disinfection and preventive disinfection of epidemic foci such as ambient air and object surfaces. The decomposition products of peracetic acid are hydrogen peroxide, acetic acid, water and oxygen, which are not harmful to the human body, but if people are exposed to them for a long time, they will not only cause respiratory diseases, but also the skin will become rough, peeling and cracked, so it is not suitable for human body. Air disinfection in the presence of people.

(2) Ozone method: Ozone (O ₃ ) is an allotrope of oxygen (O ₂ ), the oxidation-reduction potential of ozone is 2.07V, the oxidation-reduction potential is second only to fluorine, and it has strong oxidizing properties. The stability of ozone is extremely poor, and it can be automatically decomposed into oxygen at room temperature, so ozone cannot be stored, and can only be prepared for current use. When ozone is used for air disinfection, an ozone generator is generally installed in the air conditioning system first, and air is used as raw material to prepare ozone by methods such as ultraviolet radiation, electrolysis, and corona discharge, and diffuses into the indoor space with the purification fan. , thereby disinfecting the indoor air and indoor surfaces. Ozone is a double-edged sword. While disinfecting, because ozone stimulates the mucous membranes of the body, it can cause dry throat, cough, chest tightness, asthma and other respiratory diseases. Therefore, it is not suitable for air disinfection in the presence of people.

(3) Chlorine dioxide method: the molecular formula of chlorine dioxide (chlorine dioxide) is ClO ₂ , which consists of one chlorine atom and two oxygen atoms, and its oxidation-reduction potential is 1.5V. It is yellow-green gas or red explosive crystal at room temperature , has a strong pungent taste. Chlorine dioxide is highly corrosive and can only be used for air disinfection where no one is present.

Method 3: Other Air Disinfection Methods

In recent years, it is generally believed that gas fumigation is a more effective means to kill and remove microbial contamination in space. Commonly used fumigation disinfectants include formaldehyde and vaporized hydrogen peroxide. Formaldehyde is still a fumigation disinfectant commonly used in hospitals and laboratories in my country because of its good bactericidal effect, low price, and easy operation. However, studies have shown that formaldehyde has a potential carcinogenic effect, and long-term use is very harmful to the human body.

The use of Chinese herbal medicine to detoxify and sterilize bacteria has a long history. "Compendium of Materia Medica" and other Chinese medicine classics all have methods for using Chinese herbal medicine to burn smoke to avoid plague. Most of these medicines are pungent, warm, fragrant and dry, and have the effect of eliminating turbidity and dampness with fragrance, such as Artemisia argyi and Atractylodes atractylodes. Artemisia argyi contains volatile oil, which has different degrees of bactericidal and antibacterial effects on Staphylococcus aureus, Mycobacterium tuberculosis, Pseudomonas aeruginosa, Diphtheria bacillus, Bacillus subtilis, Pseudomonas aeruginosa and Escherichia coli and many other common bacteria and skin fungi effect. Atractylodes atractylodis contains atractylodesin, atractylodes ketone, atractylodes alcohol and β-nucleoaminooleyl alcohol, etc., which have significant bactericidal and bacteriostatic effects on Mycobacterium tuberculosis, Staphylococcus aureus, Escherichia coli, Bacillus subtilis and Pseudomonas aeruginosa. Smoked Chinese herbal medicine not only produces a lot of smoke, but also irritates the respiratory tract for a long time and causes serious discomfort, so it is not suitable for disinfection when there are people.

The physical disinfection method mainly uses light, electricity, filtration, adsorption and other methods in physics to interact with the bacteria in the indoor air to kill bacteria. The chemical disinfection method mainly uses the oxidation of chemical disinfectants to change the cell structure of bacteria in the air, so that It cannot reproduce normally by metabolism leading to death. The gas fumigation method kills bacteria by affecting the metabolism of bacteria with bactericidal substances. The above three types of methods can all kill harmful microorganisms in the air to varying degrees, but once the disinfection is stopped, or there are people coming in and out, the number of bacterial colonies in the space will rise rapidly to the number of colonies before the disinfection, and even the number will be higher than that before disinfection. The number of colonies before disinfection is even higher.

In short, the current air disinfection methods have disadvantages such as poor disinfection effect of disinfectants, residual pollution, strong corrosiveness, high disinfection cost or expensive disinfection equipment, complicated use process, etc., especially they cannot be disinfected under human conditions.

Polyiodine is a safe and efficient disinfectant recognized internationally at present, and its effective bactericidal component is polyiodide ion; polyiodide ion is a polymer of iodide ion and iodine molecule, and its structural formula is m is the degree of polymerization, and an integer of 3≤m≤9. Compared with ordinary iodine-containing disinfectants, high-polyiodine has stronger oxidizing properties, better bactericidal performance, and is very stable. Although polyiodine is an efficient disinfectant, it cannot be used directly in the presence of people. The invention utilizes the high efficiency of high-polyiodine contact sterilization, immobilizes high-polyiodide ions on the surface of a material with a high specific surface area and excellent permeability, and makes a filter element material capable of air disinfection in the presence of people.

Contents of the invention

The first object of the present invention is to provide an air disinfection filter element material with good disinfection effect and capable of disinfection under human conditions.

The technical scheme that realizes the first object of the present invention is: a kind of air disinfection filter element material, and described air disinfection filter element material is the fiber that is loaded with high polyiodide ion, and the structure of high polyiodide ion is m is called the degree of polymerization, and an integer of 3≤m≤9.

Preferably, the fibers are reticular fibers, and the reticular fibers are preferably reticular activated carbon fibers, reticular nylon fibers or reticular polyester fibers with high specific surface area.

The air disinfection filter element material of the present invention is a kind of air disinfection filter element material (high polyiodine/organosilicon quaternary ammonium salt/fiber) generated by immobilizing high-polyiodine disinfectant on the fiber surface through an organic silicon quaternary ammonium salt coupling agent , and its structure diagram is shown in Fig. 1.

The second object of the present invention is to provide a method for preparing an air disinfection filter element material.

The technical scheme that realizes the second purpose of the present invention is: a kind of preparation method of air disinfection filter element material, comprises the following steps:

(1) First, the fiber material is subjected to high-temperature drying and boiling water cooking pretreatment;

(2) Finally, the fibers treated in step (1) are placed in the activation solution, and under stirring, shaking or ultrasonic conditions, the temperature is controlled to carry out the activation reaction, and after a certain period of reaction, take out and wash with distilled water;

(3) Place the fiber treated in step (2) in a high poly iodine carrier liquid containing organosilicon quaternary ammonium salt, iodine, iodide and stabilizer, and control the reaction under stirring, shaking or ultrasonic conditions Temperature, carry out immobilization reaction, take out after reacting for a certain period of time, and dry at a certain temperature to obtain the air disinfection filter element material. The preparation principle and process are shown in Figure 2.

In the above-mentioned scheme, the activation solution described in step (2), when the fiber is activated carbon fiber or nylon fiber, the activation solution is an aqueous solution of an inorganic acid and an oxidizing agent, wherein the acid is one of hydrochloric acid, sulfuric acid, phosphoric acid and nitric acid The mixture of one or more kinds, the oxidizing agent is hydrogen peroxide, K ₂ S ₂ O ₈ or (NH ₄ ) ₂ S ₂ O ₈ , the mass ratio of acid, oxidizing agent and water is 3-10 : 10～20: 70～87; when described fiber is polyester fiber, described activation solution is lye, and alkali is the mixture of one or more in sodium hydroxide, potassium hydroxide or sodium carbonate, and its The mass ratio of alkali to water is 1-8:92-99. The purpose of the activation reaction is to increase the number of oxygen-containing functional groups (hydroxyl and carboxyl) on the fiber surface, so that more organic silicon quaternary ammonium salts can be bonded to the fiber surface, thereby immobilizing more high-polyiodine disinfectant.

In the above scheme, the mass ratio of the fibers and the activation solution in step (2) is 1:50 to 1:300, the reaction temperature is 50 to 90°C, and the reaction time is 30 to 90 minutes; after the reaction, the fibers are taken out and washed with distilled water for 3 ~5 times; then dry, the drying temperature is 80-120°C, and the drying time is 30-90 minutes. After the reaction is finished, the circulation of the activation solution can be realized by supplementing the acid, oxidant and water or alkali and water consumed by the reaction.

In the above scheme, the molecular formula of the organic silicon quaternary ammonium salt described in step (3) is (CH ₃ O) ₃ Si(CH ₂ ) ₃ N(CH ₃ ) ₂ C _n H _{2n+ 1} Cl, n=10-18; The organic silicon quaternary ammonium salt itself has a bactericidal function, and can realize the purpose of synergistic sterilization with high poly iodine; A mixture of quaternary ammonium salts; the solvent of the high polyiodine solid carrier liquid is an aqueous solution of ethanol, and the volume ratio of ethanol to water is 1:3 to 3:1.

In the above-mentioned scheme, the stabilizer described in step (3) is a mixture of one or more of acetic acid, oxalic acid, citric acid, phosphoric acid and malic acid, iodide, iodine simple substance, organosilicon quaternary The mass ratio of the ammonium salt, the stabilizer and the aqueous ethanol solution is 0.1-1.0:0.1-2.0:0.1-4.0:0.1-1.0:92.0-99.6.

In the above scheme, in the immobilized reaction described in step (3), the mass ratio of the fiber to the immobilized liquid is 1:50 to 1:200, the reaction temperature is 50 to 90°C, and the reaction time is 20 to 60 minutes; after the reaction, Take out the fiber after immobilizing high-polyiodine, and directly dry it at a drying temperature of 30-60° C. and a drying time of 2-8 hours to obtain an air disinfection filter element material. For the high polyiodine solid carrier liquid after the reaction, the recycling of the high poly iodine solid carrier liquid can be realized by adding iodide, iodine simple substance, organosilicon quaternary ammonium salt, stabilizer and ethanol aqueous solution.

In the above scheme, the immobilization reaction described in step (3) includes 2 reactions: the coupling reaction of organosilicon quaternary ammonium salt and fiber surface active groups (hydroxyl and carboxyl) and the coupling reaction between polyiodide ions and chloride ions. ion exchange reaction.

The air disinfection filter element material of the present invention can be directly assembled on an air conditioner, an air cleaner or an electric fan for use, and its service life (according to 3 hours of disinfection per day) can reach more than one year.

A kind of air disinfection filter element material of the present invention and preparation method thereof, compared with prior art, its advantage and positive effect are: the air disinfection filter element material prepared by pretreatment, activation treatment and immobilized reaction, can The high polyiodide ions are firmly fixed on the surface of the fiber through chemical bonds, and air disinfection is realized by direct contact between the high polyiodide ions on the surface and bacteria or viruses; the air disinfection filter material has strong stability, high safety performance, and bactericidal effect Good, easy to use, long disinfection life, no residue, no corrosion and low disinfection cost, especially the material can carry out air disinfection in the presence of people; moreover, the preparation method also has the advantages of simple and fast process and waste liquid circulation Application and other advantages. The air disinfection filter element material of the present invention solves the problems of poor disinfection effect, residual pollution, strong corrosion, high disinfection cost, expensive disinfection equipment, complicated use process and other shortcomings in the current air disinfection, and can be used under the condition of human presence. Air disinfection in closed spaces of public places provides a new material and technology.

Description of drawings

Fig. 1 is the structural representation of the air disinfection filter core material provided by the present invention;

Fig. 2 is the preparation and process schematic diagram of air disinfection filter core material provided by the present invention;

Fig. 3 is the Raman spectrogram of the activated carbon fiber air disinfection filter element material provided by the embodiment of the present invention 1;

Fig. 4 is the Raman spectrogram of the nylon fiber air disinfection filter core material that the embodiment of the present invention 2 provides;

Fig. 5 is the Raman spectrogram of the polyester fiber air disinfection filter core material provided by Example 3 of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the examples.

Embodiment 1 The specific implementation of activated carbon fiber air disinfection filter core material.

Pretreatment: dry the activated carbon fiber felt in an oven at 120°C for 3.5 hours, place it in a desiccator and cool it down; cut the activated carbon fiber felt into a square piece (20g) of 400mm×400mm, cook it in boiling water for 0.5 hour, repeat twice, Place the treated activated carbon fiber felt in a blast drying oven at 120°C for 1.5 hours and set it aside.

Activation reaction: put the pretreated activated carbon fiber felt in a flask, add 1250ml of 10% nitric acid, then add 1250ml of 30% hydrogen peroxide, the reaction temperature is 60°C, the reaction time is 1 hour, and the oscillation frequency is 120 rpm Minutes, the reaction is over, the activated fiber is washed 3 times with distilled water, dried at 100°C for 20 minutes, and set aside.

Preparation of high-polyiodine solid-carrier liquid: First, add 8 g of organosilicon quaternary ammonium salt, 4.11 g of potassium iodide, and 4.04 g of oxalic acid in 2104 g of ethanol aqueous solution while stirring, and then add 18.51 g of iodine elemental substance, of which organosilicon quaternary ammonium salt It is 3-(trimethoxysilyl)propyl dodecyldimethyl ammonium chloride.

Immobilization reaction: place the activated carbon fiber mat after the activation reaction in a beaker filled with high-polyiodine immobilization liquid, and shake it at 60°C for 45 minutes at a frequency of 120 rpm. After the reaction, take it out and store it at 40°C Drying for 3 hours under high temperature polyiodine/organosilicon quaternary ammonium salt/activated carbon fiber air disinfection filter element material. The Raman spectrum and air disinfection results of the material are shown in Figure 3 and Table 1, respectively.

It can be seen from Figure 3 that there is a strong peak at 115cm ^-1 , which is stretching vibration peak (ν ₁ ), while 230cm ^-1 is The double frequency peak (2ν ₁ ) of the vibration peak at 115cm ^-1 , the peak at 160cm ^-1 is Therefore, it can be proved that the surface of the prepared air disinfection filter element material is immobilized with polyiodide ions.

Table 1 Air disinfection experiment results of activated carbon fiber air disinfection filter element material

From the results in the above table, it can be seen that the average killing rate of the sample for 90 minutes on the artificially sprayed Staphylococcus albus in the air of a 20m ³ closed room is as high as 99.99%, indicating that the activated carbon fiber air disinfection filter material has very excellent air disinfection performance .

The specific implementation of embodiment 2 nylon fiber air disinfection filter core material.

Pretreatment: Dry the reticular nylon fibers in an oven at 100°C for 1.5 hours, place them in a desiccator and cool them down; cut the reticular nylon fibers into 400mm×400mm square pieces (30g), cook them in boiling water for 0.5 hours, repeat twice The second time, place the treated nylon fiber in a blast drying oven at 100°C for 1.0 hour and set it aside.

Activation reaction: put the pretreated nylon fibers in a flask, add 1250ml of 20% nitric acid, then add 1250ml of 30% hydrogen peroxide, the reaction temperature is 70°C, the reaction time is 1 hour, and the oscillation frequency is 150 rpm. After the reaction is finished, the activated fiber is washed three times with distilled water, dried at 110° C. for 20 minutes, and set aside.

Preparation of high-polyiodine solid-carrier liquid: First, add 8 g of organosilicon quaternary ammonium salt, 4.11 g of potassium iodide, and 4.04 g of oxalic acid in 2104 g of ethanol aqueous solution while stirring, and then add 18.51 g of iodine elemental substance, of which organosilicon quaternary ammonium salt It is 3-(trimethoxysilyl)propyltetradecyldimethylammonium chloride.

Immobilization reaction: place the activated nylon fiber in a beaker filled with the immobilization liquid, vibrate and react at 60°C for 45 minutes, the oscillation frequency is 120 rpm, after the reaction, dry at 40°C for 4 hours to obtain Nylon fiber air disinfection filter material. The Raman spectrum and air disinfection results of the material are shown in Figure 4 and Table 2, respectively.

It can be seen from Figure 4 that a stronger peak appears at 230cm ^-1 , which is In the double frequency peak of the vibrational peak at 115cm ^-1 , the peak at 160cm ^-1 is stretching vibration peak. Therefore, it can be proved that the surface of the prepared air disinfection filter element material is immobilized with polyiodide ions.

The air disinfection experiment result of table 2 nylon fiber air disinfection filter element material

From the results in the above table, it can be known that the average killing rate of Staphylococcus albicans artificially sprayed in the air ^of a 20m closed room after 90 minutes of sample action is 98.63%, indicating that the nylon fiber air disinfection filter material has very excellent air disinfection performance.

The specific implementation of embodiment 3 polyester fiber air disinfection filter core material.

Pretreatment: Dry the reticular polyester fiber in an oven at 100° C. for 1.5 hours, place it in a desiccator and cool it; cut the reticular polyester fiber into a square block (30 g) of 400 mm × 400 mm, and cook it in boiling water for 0.5 hour. Repeat twice, place the treated nylon fiber in a blast drying oven at 100° C. to dry for 1.0 hour, and set aside.

Activation reaction: put the pretreated polyester fiber in a flask, add 2% sodium hydroxide solution, the reaction temperature is 70°C, the reaction time is 1 hour, the oscillation frequency is 150 rpm, after the reaction is completed, the activated fiber Wash 3 times with distilled water, dry at 110°C for 20 minutes, and set aside.

Preparation of high-polyiodine solid-carrier liquid: First, add 16g of organosilicon quaternary ammonium salt, 4.11g of potassium iodide, 4.24g of citric acid in 2104g of ethanol aqueous solution while stirring, and then add 18.51g of iodine elemental substance, of which organosilicon quaternary ammonium The salt was 3-(trimethoxysilyl)propylhexadecyldimethylammonium chloride.

Immobilization reaction: place the activated polyester fibers in a beaker filled with high-polyiodine immobilization liquid, shake and react at 60°C for 40 minutes, and the oscillation frequency is 120 rpm. After the reaction, dry at 50°C for 6 hours, the polyester fiber air disinfection filter element material is obtained. The Raman spectrum and air disinfection results of the material are shown in Figure 5 and Table 3, respectively.

It can be seen from Fig. 3 that there is a strong peak at 109cm ^-1 , which is stretching vibration peak (ν ₁ ), and at 218cm ^-1 is In the double frequency peak (2ν ₁ ) of the vibration peak at 109cm ^-1 , the peak at 146cm ^-1 is Therefore, it can be proved that the surface of the prepared air disinfection filter element material is immobilized with polyiodide ions.

The air disinfection experiment result of table 3 polyester fiber air disinfection filter element material

From the results in the above table, it can be seen that the average killing rate of the sample against Staphylococcus albus artificially sprayed in the air ^of a 20m closed room for 90 minutes is 99.96%, indicating that the polyester fiber air disinfection filter material has efficient air disinfection performance .

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (9)

1. a kind of air sterillization material for core, it is characterised in that the air sterillization material for core be it is immobilized have the immobilized poly- iodine of height/ The fiber of organosilicon quaternary ammonium salt, the structure of high poly- iodide ion are I_m ^-, m is known as the degree of polymerization, and the integer of 3≤m≤9, the air The structural formula for sterilizing material for core is as follows：

2. air sterillization material for core according to claim 1, the fiber is reticular fibre, and the reticular fibre is net Shaped activated carbon fiber, netted nylon fiber or reticulated polyester fiber.

3. a kind of preparation method of air sterillization material for core, it is characterised in that include the following steps：

(1) fiber is subjected to drying and boiling water pretreatment；

(2) will through step (1), treated, and fiber is placed in activating solution, carry out activating under stirring, concussion or ultrasound condition anti- It answers, fiber is taken out after reaction and is washed with distilled water, it is dry；

It (3) will be through in step (2) treated fiber the is placed in poly- immobilized liquid of iodine of height containing organosilicon quaternary ammonium salt, in stirring, shake Swing or ultrasound condition under, carry out the immobilized reaction of high poly- iodide ion, after reaction, take out fiber and be dried to get air Sterilize material for core.

4. the preparation method of air sterillization material for core according to claim 3, it is characterised in that dried described in step (1) Dry condition is to dry 0.5~10 hour at 100~200 DEG C.

5. the preparation method of air sterillization material for core according to claim 3, it is characterised in that：

When the fiber is activated carbon fibre or nylon fiber, activating solution described in step (2) is inorganic acid and oxidant Aqueous solution, the inorganic acid are one of hydrochloric acid, sulfuric acid and nitric acid or a variety of mixtures, the oxidant be hydrogen peroxide and (NH4) mixture of one or both of 2S2O8；The mass ratio of the inorganic acid, oxidant and water is 3~10:10~20: 70~87；

When the fiber is polyester fiber, activating solution described in step (2) is lye, and the alkali is sodium hydroxide, hydroxide The mass ratio of one of potassium and sodium carbonate or a variety of mixtures, the alkali and water is 1~8:92~99.

6. the preparation method of air sterillization material for core according to claim 3, it is characterised in that fibre described in step (2) The mass ratio of peacekeeping activating solution is 1:50~1:300,50~90 DEG C of reaction temperature, the reaction time 30~90 minutes；Reaction terminates After take out fiber, be washed with distilled water 3~5 times；80~120 DEG C of drying temperature, drying time 10~30 minutes.

7. the preparation method of air sterillization material for core according to claim 3, it is characterised in that height described in step (3) The poly- immobilized liquid of iodine is the ethanol water containing organosilicon quaternary ammonium salt, iodine, iodide and stabilizer, in the ethanol water The volume ratio of ethyl alcohol and water is 1:3~3:1；The iodide are KI or NaI；The stabilizer is acetic acid, oxalic acid, lemon The mixture of one or more of acid, phosphoric acid and malic acid；Iodide, iodine, organosilicone quaternary ammonium in the immobilized liquid of the poly- iodine of height The mass ratio of salt, stabilizer and ethanol water is 0.1~1.0:0.1~2.0:0.1~4.0:0.1~1.0:92.0~ 99.6。

8. the preparation method of air sterillization material for core according to claim 7, it is characterised in that described in step (3) The molecular formula of organosilicon quaternary ammonium salt is (CH₃O)₃Si(CH₂)₃N(CH₃)₂C_nH_2n+1Cl, wherein n=10~18；The poly- iodine of height is solid In carrier fluid, organosilicon quaternary ammonium salt is the mixture of a kind of above-mentioned organosilicon quaternary ammonium salt or a variety of organosilicon quaternary ammonium salts.

9. the preparation method of air sterillization material for core according to claim 3, it is characterised in that solid described in step (3) It carries in reaction, the mass ratio of fiber and the high poly- immobilized liquid of iodine is 1:50~1:200,50~90 DEG C of reaction temperature, the reaction time 20 ~60 minutes；30~60 DEG C of drying temperature, drying time 2~8 hours.