阅读说明：本技术 一种吸波防辐射复合纺织材料的制备方法 (Preparation method of wave-absorbing radiation-proof composite textile material ) 是由 陈桂川 于 2019-08-01 设计创作，主要内容包括：本发明涉及一种吸波防辐射复合纺织材料的制备方法,属于纺织材料技术领域。本发明通过添加聚丙烯腈基碳纤维和碳化硅纤维,制备防辐射复合纺织材料,聚丙烯腈基碳纤维和碳化硅纤维均属于结构吸波材料,制成承受压缩、弯曲及剪切载荷的结构件,碳化硅纤维与聚丙烯腈基碳纤维正交形成电路模拟结构,正交排布的碳化硅纤维和炭纤维构成一个平面导电网络,在入射电磁波的作用下,产生感应电流,通过欧姆损耗和涡流损耗将电磁波能量转化为热能而损耗掉,对电磁波的衰减增强,此外,由正交排布的碳化硅纤维构成的吸波屏会起到反射屏的作用,从吸波屏表面反射的电磁波和从多晶铁纤维反射层反射的电磁波会产生相位对消的效应,提高其防辐射能力。(the invention relates to a preparation method of a wave-absorbing radiation-proof composite textile material, belonging to the technical field of textile materials. The invention prepares the radiation-proof composite textile material by adding the polyacrylonitrile-based carbon fiber and the silicon carbide fiber, the polyacrylonitrile-based carbon fiber and the silicon carbide fiber both belong to structural wave-absorbing materials, a structural member bearing compression, bending and shearing loads is prepared, the silicon carbide fiber and the polyacrylonitrile-based carbon fiber form a circuit simulation structure in an orthogonal manner, the silicon carbide fiber and the carbon fiber which are arranged in the orthogonal manner form a plane conductive network, under the action of incident electromagnetic wave, induced current is generated, the electromagnetic wave energy is converted into heat energy through ohmic loss and eddy current loss and is lost, the attenuation of electromagnetic waves is enhanced, in addition, the wave absorbing screen formed by the silicon carbide fibers which are arranged in an orthogonal mode can play a role of a reflecting screen, the electromagnetic waves reflected from the surface of the wave absorbing screen and the electromagnetic waves reflected from the polycrystalline iron fiber reflecting layer can generate a phase cancellation effect, and the radiation protection capability of the wave absorbing screen is improved.)

1. a preparation method of a wave-absorbing radiation-proof composite textile material is characterized by comprising the following specific preparation steps:

(1) Placing cotton fibers in an opener, and pre-opening for 10 ~ 20min at normal temperature to obtain pre-opened cotton fibers;

(2) Adding polycrystalline iron fiber, silicon carbide fiber and polyacrylonitrile-based carbon fiber into pre-opened cotton fiber, placing in a wool-blending machine, blending at normal temperature for 20 ~ 30min to obtain mixed fiber;

(3) Opening and picking the mixed fiber, drawing at the rotating speed of a front roller of 700 ~ 750r/min after a cotton carding process to obtain the blended fiber;

(4) putting the fiber after the fiber is added into a roving frame, and performing roving at the rotating speed of a front roller of 200 ~ 300r/min for 20 ~ 40min to obtain a roving yarn;

(5) putting the coarse spun yarn into a fine spinning machine, and fine spinning at the spun yarn spindle speed of 6000 ~ 6200r/min for 30 ~ 40min to obtain fine spun yarn;

(6) And (3) putting the fine spun yarn into an automatic winder, and performing a winding process at the normal temperature at the rotating speed of 850 ~ 900r/min for 1 ~ 2h to obtain the radiation-proof composite textile material.

2. the preparation method of the wave-absorbing radiation-proof composite textile material according to claim 1, wherein the weight parts of the cotton fiber, the polycrystalline iron fiber, the silicon carbide fiber and the polyacrylonitrile-based carbon fiber are 80 ~ 100 parts of cotton fiber, 20 ~ 25 parts of polycrystalline iron fiber, 8 ~ 10 parts of silicon carbide fiber and 8 ~ 10 parts of polyacrylonitrile-based carbon fiber.

3. The method for preparing the wave-absorbing radiation-proof composite textile material according to claim 1, wherein the conditions of the opening and picking process in the step (3) are that the basis weight is 300 ~ 400g/m, and the fixed length is 20 ~ 30 m.

4. the method for preparing the wave-absorbing radiation-proof composite textile material according to claim 1, wherein the conditions of the roving in the step (4) are that the roller gauge is 22mm x 35mm, the draft multiple of the back zone is 1, the relative humidity is 80%, and the temperature is 25 ℃.

5. the method for preparing the wave-absorbing radiation-proof composite textile material according to claim 1, wherein the conditions of the fine spinning in the step (5) are that the twist is 50 twist/10 cm, the relative humidity is 75%, and the temperature is 25 ℃.

6. the preparation method of the wave-absorbing radiation-proof composite textile material according to claim 1, wherein the polycrystalline iron fiber obtained in the step (2) is prepared by the following steps:

(1) Adding a sodium hydroxide solution into a ferrous sulfate solution at the flow rate of 5 ~ 10mL/min, stirring and reacting for 10 ~ 15min at the rotation speed of 160 ~ 200r/min under the water bath condition of 15 ~ 20 ℃, and dropwise adding sulfuric acid with the mass concentration of 1% to adjust the pH to 4 ~ 5 to obtain ferrous hydroxide colloid;

(2) introducing air into the ferrous hydroxide colloid at the flow rate of 10 ~ 20mL/min for 3 ~ 5min to perform oxidation reaction to obtain an oxidation reactant;

(3) Adding the oxidation reactant into deionized water, and stirring at the rotation speed of 200 ~ 240r/min for 10 ~ 20min at normal temperature to obtain a mixed solution;

(4) adding the sodium silicate solution into the mixed solution, stirring at the normal temperature at the rotating speed of 240 ~ 280r/min for 30 ~ 40min, introducing carbon dioxide gas at the air flow rate of 20 ~ 30mL/mim to adjust the pH value to 5.8 ~ 6.2.2, filtering off liquid, washing and drying to obtain silicon-coated iron fibers;

(5) dehydrating the silicon-coated iron fiber for 4 ~ 6h at the temperature of 200 ~ 400 ℃ to obtain a dehydrated product;

(6) And (3) placing the dehydrated product into a quartz dish, placing the quartz dish into a reduction furnace, introducing nitrogen-hydrogen mixed gas, calcining for 4 ~ 6h at the temperature of 400 ~ 600 ℃ and cooling to room temperature along with the furnace to obtain the polycrystalline iron fiber.

7. the preparation method of the wave-absorbing radiation-proof composite textile material according to claim 6, wherein the weight parts of the ferrous sulfate solution, the sodium hydroxide solution, the sodium silicate solution and 100 ~ 120 parts of deionized water are 50 ~ 60 parts of 25% ferrous sulfate solution, 10 ~ 12 parts of 5% sodium hydroxide solution, 20 ~ 30 parts of 10% sodium silicate solution and 100 ~ 120 parts of deionized water.

8. The preparation method of the wave-absorbing radiation-proof composite textile material according to claim 6, wherein the volume ratio of nitrogen to hydrogen in the nitrogen-hydrogen mixed gas in the step (6) is 1:1, and the gas introduction speed is 120 ~ 140 mL/min.

9. the preparation method of the wave-absorbing radiation-proof composite textile material according to claim 1, wherein the silicon carbide fiber in the step (2) is prepared by the following specific steps:

(1) Placing polydimethylsilane in a reaction kettle, introducing high-purity nitrogen at the air flow rate of 40 ~ 60mL/min for protection, heating to 200 ℃ at the heating rate of 5 ℃/min, preserving heat for 20 ~ 40min, and cooling to normal temperature to obtain a polycarbosilane primary product;

(2) adding the polycarbosilane primary product into dimethylbenzene, and stirring at the rotation speed of 300 ~ 400r/min for 20 ~ 30min at normal temperature to obtain a mixed solution;

(3) placing the mixed solution at 300 ~ 400KPa and 340 ~ 360 ℃ for reduced pressure distillation of 2 ~ 4, and cooling to room temperature to obtain polycarbosilane;

(4) putting polycarbosilane into a melt spinning machine, introducing nitrogen at the air flow rate of 40 ~ 50mL/min for protection, extruding under the conditions that the pressure is 0.2 ~ 0.4.4 MPa and the temperature is 240 ~ 260 ℃, and cooling to room temperature to obtain polycarbosilane fiber precursor;

(5) Placing the polycarbosilane fiber precursor in a vertical non-melting furnace, heating from normal temperature to 180 ℃ at the heating rate of 3 ~ 5 ℃/min, preserving heat, carrying out non-melting treatment for 20 ~ 30min, and cooling to room temperature along with the furnace to obtain non-melting polycarbosilane fiber;

(6) Putting the fiber into a quartz boat, putting the quartz boat into a corundum tube, introducing nitrogen at the air flow rate of 40 ~ 60mL/min for protection, heating the quartz boat to 1200 ℃ from the normal temperature at the heating rate of 5 ℃/min, carrying out heat preservation and calcination for 1 ~ 2h, and cooling the quartz boat to the room temperature along with the tube to obtain the silicon carbide fiber with the average diameter of 0.12 ~ 0.16.16 mm.

10. the preparation method of the wave-absorbing radiation-proof composite textile material according to claim 9, wherein the weight parts of the polydimethylsilane and the xylene are 40 ~ 50 parts of the polydimethylsilane and 100 ~ 120 parts of the xylene.

Technical Field

The invention relates to a preparation method of a wave-absorbing radiation-proof composite textile material, belonging to the technical field of textile materials.

Background

The development of electronic technology has driven the prosperity of the electronic industry, small as electric shavers, mobile phones, tablets, computers, televisions and the like, large as mobile phone signal towers, high-voltage transmission lines, satellite communication, remote sensing, radar and the like, and the daily life of people is closely related to electronic equipment. However, electronic products and large electronic devices generate a large amount of electromagnetic radiation with different wavelengths, and the electromagnetic radiation is flooded around people to cause electromagnetic pollution, so that work and bodies of people are damaged to a certain extent. The hazards of electromagnetic contamination are primarily manifested in two ways.

Interfering with normal operation of the instrument: the wide distribution of electromagnetic waves invisibly disturbs the normal operation of various instruments. Electronic and electrical equipment and other equipment can break down due to electromagnetic wave interference, so that various precise instruments are greatly lost economically, and are difficult to accurately operate due to the electromagnetic wave interference, transmission of command signals is influenced, and secondary damage is caused; electromagnetic waves interfere with the precise positioning of military weapons, directly damaging the military forces of attack in war.

Harming the health: the harm of electromagnetic radiation to the human body is mainly classified into three types: thermal effects, non-thermal effects, cumulative effects (carcinogenic, mutagenic, and teratogenic).

thermal effect: the phenomenon that the body of a human body is heated up due to electromagnetic radiation is a heat effect. Caused by the rise of the body temperature

Various uncomfortable symptoms, including visual deterioration, memory deterioration, dizziness, headache, insomnia, neurasthenia, accelerated heartbeat, bradycardia, arrhythmia, leukopenia, immunologic function reduction and the like, can cause fatal damage such as myocardial infarction when serious. The temperature of each organ in the body is excessively increased, so that the organ is easily damaged irreversibly.

non-thermal effect: the weak electromagnetic field of human organs and tissues is affected by electromagnetic radiation as a non-thermal effect. Mainly includes the decline of the function of the nervous system, such as bradycardia; decreased sensory system, such as decreased olfactory function; low immune system capacity; endocrine disorders.

Cumulative effect: the human body is damaged by electromagnetic radiation again before being repaired after the heating effect and the non-heating effect, and the damage to the human body is accumulated, which is an accumulation effect. The cumulative effect is a permanent and irreversible hazard to the human body. Therefore, there is a need for radiation protection, which has led to serious diseases even if the power and frequency of electromagnetic waves are low.

people pay attention to the harm caused by electromagnetic radiation, and the world health organization determines electromagnetic pollution as the fourth global pollution after atmospheric pollution, water pollution and noise pollution [8 ]. The protection mode aiming at the electromagnetic pollution is mainly two, one is to realize the protection of a target object by increasing reflection through high impedance on the surface; the other is to achieve protection by attenuation of electromagnetic waves through absorption of materials, wherein the mode of achieving protection by increasing reflection, namely electromagnetic shielding, is the main protection method.

the development of the wave-absorbing material is from the traditional wave-absorbing material such as graphite, ferrite, silicon carbide, barium titanate and the like to the novel wave-absorbing material such as intelligent stealth material, metamaterial, nano wave-absorbing material and the like [ |4], and the wave-absorbing material is developed in the direction of thin thickness, light weight, wide frequency band and strong absorption from the single mode mainly based on coating to the current situation of coexistence of multiple modes, and can even meet the requirements of some special purposes, such as high temperature resistance, strong environmental adaptability, radiation resistance and the like, and is widely applied to military fields such as warplanes, cruise missiles, naval vessels and the like. The important role of the wave-absorbing material in social life and national defense construction is not negligible, and higher requirements are provided for developing the wave-absorbing material.

the wave-absorbing material is a functional material which can effectively absorb incident electromagnetic waves, convert electromagnetic energy into heat energy and consume or enable the interference of the electromagnetic waves to be cancelled, and therefore the echo intensity of a target is obviously weakened. The absorbing material has very important application value in both military and civil fields. The wave-absorbing material is applied to the radar and the radio communication system, so that the interference between communication lines can be effectively avoided, and the sensitivity of the radar and the communication equipment is improved, thereby improving the communication quality; the use of high frequency communication systems and microwave heating devices also requires the use of absorbing materials to prevent electromagnetic radiation and leakage, thereby protecting the health and safety of the operator.

The electromagnetic wave pollution can seriously harm human health, in particular to people with weak physical quality, such as pregnant women and the like. In addition, electromagnetic waves can cause serious damage to the normal operation of communication equipment and electrical and electronic equipment. In the military field and the communication field, leakage of electromagnetic waves can also cause secret leakage. Therefore, the development of various electromagnetic wave protective materials is always a research hotspot and also a market hotspot. In particular to a textile fabric with the function of preventing electromagnetic wave radiation, which has great market demand. Because in daily life, with the increasing popularization of various electronic devices, people can contact a large amount of electromagnetic waves every day, and researches have shown that the existence of strong electromagnetic waves is harmful to the health of human bodies, especially to special people, such as pregnant women, old people, workers in special industries and the like.

in real life, electromagnetic waves of various frequency bands coexist, and therefore, it is desired to develop a material having a good electromagnetic wave absorption capability in an ultra-wide frequency range, both by researchers and in the market. It is known that in order to provide a textile fabric with electromagnetic radiation protection, various media capable of absorbing or reflecting electromagnetic waves must be added to the textile fabric. However, the absorption or reflection capability of a general medium to electromagnetic waves is closely related to its components or morphology structure, so if a textile fabric has good electromagnetic wave protection capability under a very wide frequency, multiple types of electromagnetic wave absorption or reflection media are often required to be added, and if a large amount of media are added, two technical problems are faced:

1. How to load a large amount of media into the textile fabric. There are two general methods for loading media into textile fabrics: firstly, coating the surface of the textile fabric; secondly, the medium is adhered to the fabric through some adhesives. It is clear that in both methods it is extremely difficult to load a large amount of media into the fabric.

Too much medium is loaded on the fabric to inevitably cause the reduction of the textile performance of the fabric. The textile fabric is finally required to be made into various wearing articles, so that certain textile performance requirements such as flowability, bendability, toughness and the like are met. Too much loading medium inevitably affects the textile performance, thus being not beneficial to the large-scale application of products.

Disclosure of Invention

the technical problems to be solved by the invention are as follows: aiming at the problems that in the prior art, a large amount of medium is very difficult to load into the fabric, and the textile performance of the fabric is inevitably reduced due to too much medium being loaded onto the fabric, the preparation method of the wave-absorbing radiation-proof composite textile material is provided.

In order to solve the technical problems, the invention adopts the technical scheme that:

(1) Placing cotton fibers in an opener, and pre-opening for 10 ~ 20min at normal temperature to obtain pre-opened cotton fibers;

(2) adding polycrystalline iron fiber, silicon carbide fiber and polyacrylonitrile-based carbon fiber into pre-opened cotton fiber, placing in a wool-blending machine, blending at normal temperature for 20 ~ 30min to obtain mixed fiber;

(3) Opening and picking the mixed fiber, drawing at the rotating speed of a front roller of 700 ~ 750r/min after a cotton carding process to obtain the blended fiber;

(4) Putting the fiber after the fiber is added into a roving frame, and performing roving at the rotating speed of a front roller of 200 ~ 300r/min for 20 ~ 40min to obtain a roving yarn;

(5) Putting the coarse spun yarn into a fine spinning machine, and fine spinning at the spun yarn spindle speed of 6000 ~ 6200r/min for 30 ~ 40min to obtain fine spun yarn;

(6) and (3) putting the fine spun yarn into an automatic winder, and performing a winding process at the normal temperature at the rotating speed of 850 ~ 900r/min for 1 ~ 2h to obtain the radiation-proof composite textile material.

The weight parts of the cotton fiber, the polycrystalline iron fiber, the silicon carbide fiber and the polyacrylonitrile-based carbon fiber are 80 ~ 100 parts of cotton fiber, 20 ~ 25 parts of polycrystalline iron fiber, 8 ~ 10 parts of silicon carbide fiber and 8 ~ 10 parts of polyacrylonitrile-based carbon fiber.

The opening and picking process in the step (3) has the conditions of the fixed weight of 300 ~ 400g/m and the fixed length of 20 ~ 30 m.

the conditions of the roving in the step (4) are that the roller gauge is 22mm multiplied by 35mm, the drafting multiple of the back zone is 1, the relative humidity is 80 percent and the temperature is 25 ℃.

the fine spinning condition of the step (5) is that the twist is 50 twist/10 cm, the relative humidity is 75 percent, and the temperature is 25 ℃.

The specific preparation steps of the polycrystalline iron fiber in the step (2) are as follows:

(1) Adding a sodium hydroxide solution into a ferrous sulfate solution at the flow rate of 5 ~ 10mL/min, stirring and reacting for 10 ~ 15min at the rotation speed of 160 ~ 200r/min under the water bath condition of 15 ~ 20 ℃, and dropwise adding sulfuric acid with the mass concentration of 1% to adjust the pH to 4 ~ 5 to obtain ferrous hydroxide colloid;

(2) Introducing air into the ferrous hydroxide colloid at the flow rate of 10 ~ 20mL/min for 3 ~ 5min to perform oxidation reaction to obtain an oxidation reactant;

(3) Adding the oxidation reactant into deionized water, and stirring at the rotation speed of 200 ~ 240r/min for 10 ~ 20min at normal temperature to obtain a mixed solution;

(4) adding the sodium silicate solution into the mixed solution, stirring at the normal temperature at the rotating speed of 240 ~ 280r/min for 30 ~ 40min, introducing carbon dioxide gas at the air flow rate of 20 ~ 30mL/mim to adjust the pH value to 5.8 ~ 6.2.2, filtering off liquid, washing and drying to obtain silicon-coated iron fibers;

(5) dehydrating the silicon-coated iron fiber for 4 ~ 6h at the temperature of 200 ~ 400 ℃ to obtain a dehydrated product;

(6) and (3) placing the dehydrated product into a quartz dish, placing the quartz dish into a reduction furnace, introducing nitrogen-hydrogen mixed gas, calcining for 4 ~ 6h at the temperature of 400 ~ 600 ℃ and cooling to room temperature along with the furnace to obtain the polycrystalline iron fiber.

the weight parts of the ferrous sulfate solution, the sodium hydroxide solution, the sodium silicate solution and 100 ~ 120 parts of deionized water are 50 ~ 60 parts of 25% ferrous sulfate solution with mass concentration, 10 ~ 12 parts of 5% sodium hydroxide solution with mass concentration, 20 ~ 30 parts of 10% sodium silicate solution with mass concentration and 100 ~ 120 parts of deionized water.

The volume ratio of the nitrogen to the hydrogen in the nitrogen-hydrogen mixed gas in the step (6) is 1:1, and the gas introducing speed is 120 ~ 140 mL/min.

The silicon carbide fiber prepared in the step (2) comprises the following specific preparation steps:

(1) placing polydimethylsilane in a reaction kettle, introducing high-purity nitrogen at the air flow rate of 40 ~ 60mL/min for protection, heating to 200 ℃ at the heating rate of 5 ℃/min, preserving heat for 20 ~ 40min, and cooling to normal temperature to obtain a polycarbosilane primary product;

(2) Adding the polycarbosilane primary product into dimethylbenzene, and stirring at the rotation speed of 300 ~ 400r/min for 20 ~ 30min at normal temperature to obtain a mixed solution;

(3) Placing the mixed solution at 300 ~ 400KPa and 340 ~ 360 ℃ for reduced pressure distillation of 2 ~ 4, and cooling to room temperature to obtain polycarbosilane;

(4) Putting polycarbosilane into a melt spinning machine, introducing nitrogen at the air flow rate of 40 ~ 50mL/min for protection, extruding under the conditions that the pressure is 0.2 ~ 0.4.4 MPa and the temperature is 240 ~ 260 ℃, and cooling to room temperature to obtain polycarbosilane fiber precursor;

(5) Placing the polycarbosilane fiber precursor in a vertical non-melting furnace, heating from normal temperature to 180 ℃ at the heating rate of 3 ~ 5 ℃/min, preserving heat, carrying out non-melting treatment for 20 ~ 30min, and cooling to room temperature along with the furnace to obtain non-melting polycarbosilane fiber;

(6) Putting the fiber into a quartz boat, putting the quartz boat into a corundum tube, introducing nitrogen at the air flow rate of 40 ~ 60mL/min for protection, heating the quartz boat to 1200 ℃ from the normal temperature at the heating rate of 5 ℃/min, carrying out heat preservation and calcination for 1 ~ 2h, and cooling the quartz boat to the room temperature along with the tube to obtain the silicon carbide fiber with the average diameter of 0.12 ~ 0.16.16 mm.

The weight parts of the polydimethylsilane and the xylene are 40 ~ 50 parts of the polydimethylsilane and 100 ~ 120 parts of the xylene.

Compared with other methods, the method has the beneficial technical effects that:

(1) The invention takes the cotton fiber as the base material to prepare the radiation-proof composite textile material, the cotton fiber is an important raw material in the textile industry, the cotton fiber is a porous substance, and a large amount of hydrophilic groups exist on cellulose macromolecules, so the material has better hygroscopicity, is soft and warm-keeping, is slender and soft, has good flexibility and spinnability, can conveniently carry out various textile processing, takes the cotton fiber as the base material, and can improve the textile performance, the comfort and the air permeability of the material by well adsorbing and tangling other functional fibers together.

the invention prepares the radiation-proof composite textile material by adding the polyacrylonitrile-based carbon fiber and the silicon carbide fiber, both the polyacrylonitrile-based carbon fiber and the silicon carbide fiber belong to structural wave-absorbing materials, which can not only absorb electromagnetic waves and reduce echo energy, but also can be made into structural members bearing compression, bending and shearing loads, compared with wave-absorbing coatings, the structural wave-absorbing materials do not have the problems of surface denudation, rough surface and extra weight increment, are not limited by thickness, are beneficial to widening absorption frequency bands, and do not influence the textile performance of base materials, the silicon carbide fiber and the polyacrylonitrile-based carbon fiber form a circuit simulation structure in an orthogonal way, the silicon carbide fiber and the carbon fiber which are arranged in an orthogonal way form a plane conductive network, generate induced current under the action of incident electromagnetic waves, convert the electromagnetic wave energy into heat energy through ohmic loss and eddy current loss, the fiber spacing is reduced, the ohmic loss is increased, the attenuation of electromagnetic waves is enhanced, in addition, the wave absorbing screen formed by the silicon carbide fibers which are orthogonally arranged can play a role of a reflecting screen, the electromagnetic waves reflected from the surface of the wave absorbing screen and the electromagnetic waves reflected from a polycrystalline iron fiber reflecting layer can generate a phase cancellation effect, the radiation protection capability of the wave absorbing screen is improved, the monofilament diameter of the polyacrylonitrile-based carbon fiber is thin, the external surface area is large, a large number of holes are opened on the fiber surface, the polyacrylonitrile-based carbon fiber can be effectively adsorbed between the silicon carbide fibers and the cotton fibers, and the form of the polyacrylonitrile-based carbon fiber is various, so that the polyacrylonitrile-based carbon fiber can be freely processed into products with various forms such as cloth, felt;

(2) the invention prepares the radiation-proof composite textile material by adding the polycrystalline iron fiber, wherein the polycrystalline iron fiber is a functional material, the diameter of the polycrystalline iron fiber is between the micron and nanometer level, and the polycrystalline iron fiber is effective in the fiber length direction

the magnetic conductivity is very high, a good shielding effect on radiation can be achieved, the polycrystalline iron fibers and the cotton fibers are blended together to prepare the metal fiber fabric, a metal net is formed, a good radiation-proof effect can be achieved, and the prepared metal fiber fabric is stable in performance, washable, good in air permeability, attractive in style and good in textile performance.

Detailed Description

Weighing 40 parts of polydimethylsilane and 100 parts of xylene according to parts by weight, placing polydimethylsilane in a reaction kettle, introducing high-purity nitrogen at an air flow rate of 40mL/min for protection, heating to 200 ℃ at a heating rate of 5 ℃/min, keeping the temperature for 20min, cooling to room temperature to obtain a polycarbosilane primary product, adding polycarbosilane primary product into xylene, stirring at a normal temperature of 400r/min for 20min, placing the mixed solution into a spinning machine at a pressure of 300 KPa/min for vacuum distillation of 24, cooling to room temperature to obtain polycarbosilane, placing polycarbosilane into a melt spinning machine at an air flow rate of 40mL/min for protection, introducing nitrogen at an air flow rate of 50mL/min for protection, extruding at a pressure of 0.2MPa and a temperature of 240 ℃ for extrusion, cooling to room temperature to obtain a polycarbosilane fiber precursor, placing the polycarbosilane fiber precursor into a vertical non-melt spinning furnace at a normal temperature of 3min to 180 ℃, performing non-melt processing for 30min, placing the fiber precursor into a spinning machine at a temperature of 0.2 min, placing the spinning machine at a temperature of 20min, placing the spinning machine at a spinning temperature of 200 mm, placing the spinning machine at a spinning speed of 200 ℃ for 10min, placing the spinning machine at a spinning speed of 10min for 10min, placing the spinning machine at a spinning temperature of 10 mm, placing the spinning machine at a spinning speed of 10min for 10 mm, placing the spinning machine at a spinning temperature, placing the spinning machine at a spinning speed of 10 mm, placing the spinning machine at a spinning temperature, placing the spinning temperature of 10, placing the spinning machine at a spinning temperature, placing the spinning machine at a spinning speed of 10 mm, placing the spinning machine at a spinning temperature, placing the spinning machine at a spinning speed of 10, placing the spinning machine at a spinning speed of 10, placing the spinning machine at a spinning speed of 10, placing the spinning machine at a spinning temperature, placing the spinning machine at a spinning speed of 10, placing the spinning machine at a spinning speed of 10, placing the spinning machine at a spinning speed of 10, placing the spinning machine at a spinning machine at.