CN108354253B - Radiation-proof material and preparation method thereof - Google Patents
Radiation-proof material and preparation method thereof Download PDFInfo
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- CN108354253B CN108354253B CN201810359723.9A CN201810359723A CN108354253B CN 108354253 B CN108354253 B CN 108354253B CN 201810359723 A CN201810359723 A CN 201810359723A CN 108354253 B CN108354253 B CN 108354253B
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/02—Cotton wool; Wadding
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4234—Metal fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4391—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Artificial Filaments (AREA)
Abstract
The invention provides a radiation-proof material and a preparation method thereof, which is characterized in that fine denier hot melt fiber filaments and stainless steel fiber filaments are blended into yarns, then the yarns are broken into cotton slivers, and the cotton slivers are subjected to low-temperature heat treatment and then mixed with three-dimensional spiral hollow short fibers to prepare the radiation-proof material with the functions of shielding radiation and weakening or eliminating accumulated electromagnetic radiation effect, wherein the prepared radiation-proof material is a three-dimensional multi-layer flocculent structure combined in a point shape. According to the preparation method, the hot-melt fibers and the stainless steel fibers are formed in a blending mode, so that the hot-melt fibers and the stainless steel fibers are combined, and the prepared radiation-proof material has a heat preservation function; then mixing with three-dimensional spiral hollow short fibers, and combining the hot melt fibers, the stainless steel fibers and the hollow fibers to form a firm cellular three-dimensional structure in a point-like combination by utilizing the compatibility of the hot melt fibers and the hollow fibers, thereby obtaining the radiation-proof material which has better flexibility and air permeability and can prevent static electricity.
Description
Technical Field
The invention relates to the technical field of radiation protection, in particular to a radiation protection material and a preparation method thereof.
Background
With the development of high technology, the production of electronic products, communication products and electric products, the living space of the people has no complicated electromagnetic radiation. Electromagnetic radiation is an invisible, untouched field that can generate a large number of radical charges that are invariably eroding our entire body. Although we have no obvious feeling of electromagnetic radiation, it does have a certain influence on our organism or has a certain harm, especially for some accumulated electromagnetic radiation, people with good physique can not or not obviously present the harm of electromagnetic radiation in a short time, but fetus, infant or weak patients, old people have more prominent expression of the harm of electromagnetic wave.
Scientists generally believe that long term exposure to electromagnetic radiation below 2 milligauss is safe, while most appliances we are in contact with exceed 20 milligauss of radiation. For example: 200 milligauss of mobile phone, 20-40 milligauss of computer, 40 milligauss of duplicator, 200 milligauss of microwave oven, 100 milligauss of blower, 20-40 milligauss of TV, 20-40 milligauss of refrigerator, etc., so said any form of artificial electromagnetic radiation is all influential to human cells. The communication mobile phones we carry with them are not safe, but the homes we live on are places where the electric radiation is highly concentrated. Research shows that under the long-term influence of electromagnetic radiation of more than 2 mGauss, the probability of suffering from leukemia is increased by 2.1 times, the probability of suffering from brain tumor is increased by 1.5 times, the electromagnetic radiation kills human body white blood cells, destroys immunological skills, can induce cancer, and can influence the cardiovascular system and visual system of human, and the like.
With the improvement of the living standard and the health care consciousness of people, the requirements of people on clothes, eating and housing articles are changed in a new and different way. Not only the heat preservation or the cooling of our clothes, but also the multifunction of the interior of our residential houses, so that the development of materials for shielding electromagnetic radiation or reducing the cumulative effect of electromagnetic radiation to the maximum extent is an indispensable functional material.
At present, the radiation-proof materials in the market generally adopt metal blended fibers or metal-plated fiber filaments, and are formed by spinning or weaving, so that the radiation-proof materials are relatively stiff in effect and have certain air permeability, including maternity clothing, and the shielding value of general radiation-proof clothing is between 20 and 40 DB; some radiation-proof clothes are subjected to post-treatment by adopting spraying and film coating processes, so that metal particles are attached to the textile surface layer or the surface layer of raw material fibers, the metal particles of the radiation-proof clothes are easy to peel off, the air permeability is very poor, the radiation-proof clothes cannot be washed and kneaded, the shielding value can be reduced after the radiation-proof clothes are used for a long time, side effects such as skin allergy and the like are easy to cause, and the radiation-proof clothes are not suitable for being directly contacted with a human body.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a radiation-proof material and a preparation method thereof, and the prepared radiation-proof material has radiation-proof and heat-insulating properties.
The invention is realized by the following technical scheme:
in a first aspect, the present invention provides a radiation protective material, wherein the radiation protective material is a multi-layer three-dimensional flocculent structure combined in a dotted manner.
Preferably, the thickness of the radiation protective material is 2mm or more.
Preferably, the radiation protection material is made of fine denier hot melt fiber filaments, stainless steel fiber filaments and three-dimensional spiral hollow fibers.
In a second aspect, the present invention provides a method for preparing a radiation protection material, for preparing the above radiation protection material, the method includes the following steps:
s01: and blending the fine denier hot-melt fiber filaments and the stainless steel fiber filaments into yarns, and then breaking the yarns into cotton slivers at the temperature of 50-100 ℃ to obtain the pretreated fiber short fiber cotton slivers.
The melting point of the hot melt fiber is generally that the skin layer begins to melt at 110 ℃ and forms a firm bonding point with other organic fibers, and when the temperature is higher than 50 ℃, particularly 50-60 ℃, the hot melt fiber is very soft, and the heat conductivity of the metal fiber is excellent, so that the hot melt fiber is closely attached to the metal fiber in a spiral and tightly clasping manner in the temperature range, and the breaking strength of the hot melt fiber is very low and is equivalent to that of the nano-scale metal fiber, so that the hot melt fiber is easy to break synchronously.
S02: uniformly mixing the pretreated short fiber cotton sliver obtained in the step S01 with prepared three-dimensional spiral hollow short fibers, and then performing air-laying to obtain a flocculus-shaped fiber web with the grammage of 10-400 g/square meter; in the floccular fiber net, the mass fraction of the stainless steel fiber filaments is more than 20%.
The low-melting-point fiber and the conventional polyester fiber have good compatibility, the skin layer is melted and the core layer still keeps a physical structure under the condition of lower heating temperature, and a good bonding effect is generated after cooling, so that the low-melting-point fiber has higher bonding strength and can replace the glue used in the prior art, and therefore, the low-melting-point fiber has the characteristics of low hot-melt bonding temperature, quick bonding and high peeling strength; the fiber is mixed with three-dimensional spiral hollow fibers, and the prepared flocculus fiber web has the advantages of both hot-melt fibers and hollow fibers by virtue of good heat preservation, high elasticity and skin affinity of the hollow fibers with skin.
S03: and (2) overlapping the multiple layers of the flocculus-shaped fiber net obtained in the step (S02) up and down, performing single-layer corrugation folding, overlapping the multiple layers up and down, then performing single-layer corrugation folding, or overlapping the single-layer corrugation folding, then performing multi-layer superposition up and down to ensure that the gram weight of the flocculus-shaped fiber net is 100-6000 g/square meter, and then shaping at 170-230 ℃ to obtain the radiation-proof material.
The skin layer of the hot-melt fiber begins to melt when the temperature of the hot-melt fiber exceeds 110 ℃, the skin core and the hollow fiber melt at 240-260 ℃, and the skin core and the hollow fiber are shaped at 170-230 ℃, so that the skin layer of the hot-melt fiber can be fully melted, and the good performance of the skin core and the hollow fiber can be ensured.
The hot-melt fiber and the stainless steel fiber have larger difference of textile properties, especially larger difference of elasticity and breaking strength, and are not easy to form after blending. The hot melt fiber, the stainless steel fiber and the hollow fiber are tightly held together through low-temperature treatment, the treatment is very favorable for forming bonding points between the hot melt fiber and the stainless steel fiber in preference to the hot melt fiber to be consolidated together at 170-230 ℃, and the compatibility of the hot melt fiber and the hollow fiber ensures that the hot melt fiber, the stainless steel fiber and the hollow fiber form a firm cellular three-dimensional structure in point combination.
Preferably, in step S01, the stainless steel fiber filaments have a filament diameter of 30 μm or less.
When the filament diameter of the stainless steel fiber filament is too high, the filament diameter does not have control flexibility, so that the thin soft fiber with the diameter of 2-8 mu m is generally selected to be used as a dress filling radiation-proof material, and the thick metal fiber with the diameter of 8-30 is selected to be used for home furnishing inner decoration.
Preferably, in the step S01, the mass ratio of the fine-denier hot-melt fiber filaments to the stainless steel fiber filaments is 1: 1.
The weight ratio of the hot melt fiber to the stainless steel fiber sintered felt is 1:1 (the weight ratio is selected, because the density of the hot melt fiber is less than 0.9g/cm3, the density of the stainless steel fiber is about 7.93g/cm3), the hot melt fiber is generally 4D (converted into the fiber diameter of about 19 mu m), the stainless steel is 20 mu m, so that 9 hot melt fibers and 1 hot melt fiber are required to be blended, the weight ratio is 1:1, and when the stainless steel fiber with the diameter of 2 mu m is adopted, one hot melt fiber and 1 stainless steel fiber are required to be blended.
Preferably, in the step S02, the mass fraction of the pretreated staple fiber sliver is 40% or more.
The effect of radiation protection is tested, and the effect is better when the mass of the metal fiber is more than or equal to 20 percent. In the step S01, the mass ratio of the fine denier hot melt fiber filament to the stainless steel fiber filament is 1:1, so the mass of the pretreated staple fiber sliver in this step needs to be more than 40%.
Preferably, in step S01, the method for breaking the yarn into slivers at 50-60 ℃ comprises: under the condition of 50-60 ℃, the yarn is made to advance at the speed of 3-8 m per minute under the action of the tension-breaking force with the pressure of 0.1-0.2 KN and the frequency of 20-40 HZ.
Preferably, in step S03, the method for shaping the batt at 170-230 ℃ comprises: the flocculent base advances at a speed of 0.5-10 m/min at 170-230 ℃.
The hot-melt fiber can meet the setting requirement, is a bicomponent (PP or PE and PET component) skin-core structure fiber, can be melted at the temperature of 60-100 ℃ and bonded with a contact point, and can realize the setting after passing at the temperature of 170-230 ℃.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the invention provides a radiation-proof material and a preparation method thereof, the method adopts fine denier hot melt fiber filament and stainless steel fiber filament to blend into yarn, then the yarn is broken into cotton sliver, and the cotton sliver is mixed with three-dimensional spiral hollow short fiber after low-temperature heat treatment to prepare the radiation-proof material with the functions of shielding radiation and weakening or eliminating accumulated electromagnetic radiation effect, and the prepared radiation-proof material is a three-dimensional multi-layer compact honeycomb-shaped fixed tire combined in a point shape. The method comprises the steps of firstly adopting spinnability spinning of stainless steel fibers, then carrying out low-temperature treatment and stretch breaking, adopting the difference of fiber variables to tightly wrap the two fibers together, and adopting a non-woven mode of vapor deposition for forming, thereby effectively avoiding the fragile carding of the metal fibers, ensuring the uniform mixing of the metal fibers and other fibers, and forming uniform bonding points.
The prepared radiation-proof material product has the following remarkable characteristics:
(1) has the smooth hand feeling of silk-like cotton, and overcomes the defect of stiff whole filament fiber.
(2) Has the high air permeability, high resilience and clothing performance of the hollow polyester fiber.
(3) The process effectively avoids the phenomenon that the metal fiber falls off due to folding and washing, and ensures the durability and the service life of the radiation protection function.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a radiation-proof material according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
As a radiation-proof clothing material, firstly, basic properties of clothing such as washability, breathability and wearing comfort are required, and radiation protection of household appliances is also required.
In special high-radiation occasions such as radars, launching pads and the like, the shielding value of the radiation-proof material specified by the American military standard is larger than 15 db. The radiation of common household appliances such as computers, microwave ovens and the like is prevented by 15 db. The common subjective test method is that a mobile phone is wrapped in clothes to try to make a call and is not available, and if the call is not available, the test is approved to be effective. Whereas the radiation of the handset is divided into the radiation of the handset itself (near-field radiation) and the radiation of the transmitting station (far-field radiation). The clothes are used for covering the mobile phone to block the far-field radiation of the transmitting table to the mobile phone, and the far-field radiation has little harm to people, so that the clothes are not required to cover the radiation of the mobile phone, and the washability, durability and ventilation comfort of the clothes are required under the condition of meeting the radiation protection performance (generally about 15 db), so that the clothes are prevented from being reflected.
The radiation-proof clothes have the advantages that the radiation-proof clothes are good in air permeability, washable, free of reduction in shielding effect and free of any side effect on human bodies, the shielding value of the radiation-proof clothes is above 30db, and the radiation-proof clothes are suitable for being worn for a long time. Meanwhile, the polyester fiber has the moisture, moth and mildew resistance, softness, comfort, washing and wear resistance, air permeability and heat insulation performance of the hollow polyester fiber, and also has the functions of static resistance, X-ray and ultraviolet ray resistance and the like of the stainless steel fiber. And is particularly suitable for civil protection materials, and the price is more civilized.
The stainless steel fiber is firstly made of fine-denier low-melting-point bicomponent fiber which is tightly wound and consolidated with the hollow fiber, and then is mixed with the hollow fiber, formed into a net and shaped at high temperature, so that the three fibers are uniformly distributed and form a mutually crossed net-shaped honeycomb structure with bonding points, the structure characteristic of the stainless steel fiber avoids secondary pollution (namely anti-radiation performance) on the surface of a common metal fiber textile product, and the radiation protection function of the stainless steel fiber is mainly a radiation protection material in a mode of absorbing, being compatible and converting into heat energy, and the stainless steel fiber is a good thermal insulation material.
The test materials used in the examples of the present invention are all conventional in the art and commercially available.
Example 1
The embodiment provides a preparation method of a radiation protection material, which comprises the following steps:
s01: blending fine denier hot melt fiber filaments and stainless steel fiber filaments with the filament diameter of 30 mu m according to the mass ratio of 1:1 to form yarns, and then leading the yarns to advance at the speed of 3m per minute under the action of the pulling-off force with the pressure of 0.1KN and the frequency of 40HZ at the temperature of 60 ℃ to be pulled off to form cotton slivers, thus obtaining the pretreated fiber short fiber cotton slivers;
s02: uniformly mixing the pretreated short fiber cotton sliver obtained in the step S01 with prepared three-dimensional spiral hollow fibers according to the mass ratio of 40:60, and then air-laying to obtain a flocculus-shaped fiber web with the gram weight of 200 g/square meter;
s03: and (3) superposing a plurality of layers of the flocculus fiber nets obtained in the step (S02) together up and down, wherein the gram weight of the flocculus fiber nets is 6000g per square meter, and then advancing and shaping at the temperature of 170 ℃ at the speed of 0.5m per minute to obtain the radiation-proof material.
As shown in FIG. 1, the radiation-proof material obtained in this example is a three-dimensional multi-layer dense honeycomb shaped tire with a spot-like combination, the thickness is more than 20mm, and the material has smooth hand feeling, soft texture and certain elasticity.
Example 2
The embodiment provides a preparation method of a radiation protection material, which comprises the following steps:
s01: blending fine denier hot melt fiber filaments and stainless steel fiber filaments with the filament diameter of 20 mu m according to the mass ratio of 1:1 to form yarns, and then leading the yarns to advance at the speed of 5m per minute under the action of the pulling-off force with the pressure of 0.2KN and the frequency of 20HZ at the temperature of 55 ℃ to be pulled off to form cotton slivers, thus obtaining the pretreated fiber short fiber cotton slivers;
s02: uniformly mixing the pretreated short fiber cotton sliver obtained in the step S01 with prepared three-dimensional spiral hollow fibers according to the mass ratio of 50:50, and then air-laying to obtain a flocculus-shaped fiber web with the gram weight of 400 g/square meter;
s03: and (3) performing single-layer folding on the flocculus-shaped fiber web obtained in the step S02 to enable the gram weight of the flocculus-shaped fiber web to be 4000 g/square meter, and then performing forward shaping at the temperature of 230 ℃ at the speed of 2 m/min to obtain the radiation-proof material.
The radiation-proof material obtained in the embodiment is a three-dimensional multi-layer compact honeycomb-shaped molding tire combined in a dotted manner, the thickness of the tire is more than 20mm, and the tire has smooth hand feeling, soft texture and certain elasticity.
Example 3
The embodiment provides a preparation method of a radiation protection material, which comprises the following steps:
s01: blending fine denier hot melt fiber filaments and stainless steel fiber filaments with the filament diameter of 10 mu m according to the mass ratio of 1:1 to form yarns, and then leading the yarns to advance at the speed of 6m per minute under the action of the pulling-off force with the pressure of 0.15KN and the frequency of 30HZ at the temperature of 55 ℃ to be pulled off to form cotton slivers, thus obtaining the pretreated fiber short fiber cotton slivers;
s02: uniformly mixing the pretreated short fiber cotton sliver obtained in the step S01 with prepared three-dimensional spiral hollow fibers according to the mass ratio of 55:45, and then air-laying to obtain a flocculus-shaped fiber web with the gram weight of 200 g/square meter;
s03: and (4) superposing a plurality of layers of the flocculus-shaped fiber nets obtained in the step (S02) up and down, folding to ensure that the gram weight of the flocculus-shaped fiber nets is 2000 g/square meter, and then advancing at the temperature of 200 ℃ at the speed of 2.2 m/min for shaping to obtain the radiation-proof material.
The radiation-proof material obtained in the embodiment is a three-dimensional multi-layer compact honeycomb-shaped molding tire combined in a dotted manner, the thickness of the tire is more than 20mm, and the tire has smooth hand feeling, soft texture and certain elasticity.
The radiation-proof material obtained in this example was subjected to shielding effectiveness test, and the structure is shown in table 1 below.
Table 1: result of testing shielding effectiveness
| Frequency (MHz) | Shielding effectiveness (dB) |
| 1.5 | 6.1 |
| 3 | 7.4 |
| 10 | 9.5 |
| 30 | 18.1 |
| 100 | 23.2 |
| 300 | 29.5 |
| 915 | 33.5 |
| 1500 | 35.4 |
| 2450 | 36.5 |
| 3000 | 37.8 |
| 5000 | 39.8 |
| 8000 | 40.3 |
| 10000 | 42.6 |
| 15000 | 45.1 |
| 20000 | 39.8 |
| 25000 | 38.9 |
| 30000 | 37.6 |
As can be seen from table 1 above, the radiation-proof material obtained in this embodiment has a smooth hand feeling, a soft texture, and a better shielding effect.
Example 4
The embodiment provides a preparation method of a radiation protection material, which comprises the following steps:
s01: blending fine denier hot melt fiber filaments and stainless steel fiber filaments with the filament diameter of 2 mu m according to the mass ratio of 1:1 to form yarns, and then leading the yarns to advance at the speed of 8m per minute under the action of the pulling-off force with the pressure of 0.1KN and the frequency of 30HZ at the temperature of 50 ℃ to be pulled off to form cotton slivers, thus obtaining the pretreated fiber short fiber cotton slivers;
s02: uniformly mixing the pretreated short fiber cotton sliver obtained in the step S01 with prepared three-dimensional spiral hollow fibers according to the mass ratio of 60:40, and then air-laying to obtain a flocculus-shaped fiber web with the gram weight of 10 g/square meter;
s03: and (4) superposing a plurality of layers of the flocculus fiber nets obtained in the step (S02) up and down, folding to ensure that the gram weight of the flocculus fiber nets is 100 g/square meter, and then advancing at the temperature of 230 ℃ at the speed of 10 m/min for shaping to obtain the radiation-proof material.
The radiation-proof material obtained in the embodiment is a three-dimensional multi-layer compact honeycomb-shaped molding tire combined in a dotted manner, the thickness of the tire is more than 2mm, and the tire has smooth hand feeling, soft texture and certain elasticity.
The same amount of 60 ℃ hot water is filled into six identical hot water bags respectively, the hot water bags are placed under the identical conditions, the radiation protection materials obtained in the above examples 1, 2, 3 and 4 and the existing radiation protection materials on the market are wrapped on the outer sides of the five hot water bags respectively, the sixth hot water bag is placed directly without wrapping any material, and the temperatures of the six hot water bags are measured after 2h, 6h, 10h and 20h, so that the results show that the temperatures of the hot water bags wrapped by the radiation protection materials of the examples 1 to 4 are obviously higher than the temperatures of the hot water bags wrapped by the existing radiation protection materials on the market and are all higher than the temperatures of the hot water bags without wrapping any material, and the radiation protection materials obtained in the examples of the invention have good heat insulation performance.
In conclusion, the radiation-proof material prepared by the embodiment of the invention has the advantages of high absorptivity of electromagnetic radiation over 99%, good radiation resistance, smooth hand feeling, soft texture and good heat-insulating property, is more suitable for being made into clothes to be worn on the body, and improves the user experience.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments are merely for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions which are made by those skilled in the art within the spirit of the present invention are also within the scope of the claims of the present invention.
Claims (1)
1. A preparation method of a radiation-proof material used as radiation-proof clothes is characterized by comprising the following steps:
s01: blending fine denier hot melt fiber filaments and stainless steel fiber filaments with the filament diameter of 10 mu m according to the mass ratio of 1:1 to form yarns, and then leading the yarns to advance at the speed of 6m per minute under the action of the pulling-off force with the pressure of 0.15KN and the frequency of 30HZ at the temperature of 55 ℃ to be pulled off to form cotton slivers, thus obtaining the pretreated fiber short fiber cotton slivers;
the fine denier hot melt fiber is a bicomponent skin-core structure fiber, the surface of the hot melt fiber is melted at the temperature of 60-100 ℃ and is bonded with a contact point, and the shaping is realized at the temperature of 170-230 ℃;
s02: and (2) mixing the pretreated fiber short fiber cotton sliver obtained in the step (S01) with the prepared three-dimensional spiral hollow short fiber according to the mass ratio of 55:45, uniformly mixing, and then forming a net by air flow to obtain a flocculus-shaped fiber net with the gram weight of 200 g/square meter;
s03: superposing a plurality of layers of the flocculus-shaped fiber nets obtained in the step S02 up and down, folding to make the gram weight of the flocculus-shaped fiber nets be 2000 g/square meter, and then shaping after advancing at the speed of 2.2 m/min at the temperature of 200 ℃ to obtain the radiation-proof material;
the prepared radiation-proof material is a three-dimensional multi-layer compact honeycomb-shaped molding tire combined in a dotted manner, the thickness of the tire is more than 20mm, the hand feeling is smooth, the texture is soft, and the tire has certain elasticity; at a frequency of 15000MHz, the shielding effectiveness is 45.1 dB.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109343098A (en) * | 2018-11-20 | 2019-02-15 | 成都麦特斯科技有限公司 | A kind of radiation measurement assembly |
| CN110652049A (en) * | 2019-11-07 | 2020-01-07 | 深圳市锐丽科技有限公司 | Composite material for electronic cigarette atomizer, electronic cigarette atomizer and electronic cigarette |
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Denomination of invention: Radiation proof material and preparation method thereof Effective date of registration: 20211013 Granted publication date: 20201106 Pledgee: Shandong Feicheng Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG TAIPENG NEW MATERIAL Co.,Ltd. Registration number: Y2021980010659 |
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