WO2020186544A1 - 一种气凝胶改性羽绒材料及其制品 - Google Patents
一种气凝胶改性羽绒材料及其制品 Download PDFInfo
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- WO2020186544A1 WO2020186544A1 PCT/CN2019/079774 CN2019079774W WO2020186544A1 WO 2020186544 A1 WO2020186544 A1 WO 2020186544A1 CN 2019079774 W CN2019079774 W CN 2019079774W WO 2020186544 A1 WO2020186544 A1 WO 2020186544A1
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- WIPO (PCT)
- Prior art keywords
- aerogel
- powder
- modified
- modified down
- aerogel powder
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Classifications
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D1/00—Garments
- A41D1/04—Vests, jerseys, sweaters or the like
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D3/00—Overgarments
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/02—Bed linen; Blankets; Counterpanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M19/00—Treatment of feathers
Definitions
- the invention belongs to the technical field of heat insulation and/or thermal insulation materials, and relates to an aerogel-modified down materials and products (Aerogel-modified down materials and products), and in particular to an ultra-thin down jacket, down duvet and down underwear .
- Down is currently known natural fiber with the best thermal insulation performance.
- the downy feathers ie, velvet flowers
- the velvet flower does not contain the feather shaft, only contains a short and thick nucleus. Around the nucleus grow fine and soft filaments, which are radial and shaped like pompoms; on the longer first-order filaments grow shorter ones.
- Each velvet contains ring-shaped scale nodes.
- the next-level velvet is equivalent to its ring-shaped phosphorus node from a certain Extension in one or several directions. This unique structure gives down a large internal space to accommodate a large amount of still air, making it the natural fiber with the best thermal insulation performance.
- Aerogel is the solid with the lowest density among all natural and artificial solids currently known, and its thermal insulation performance as an artificial solid is much better than that of down as a natural fiber. Aerogel has excellent properties such as extremely low density, extremely low thermal conductivity, extremely high porosity, non-combustibility, high temperature resistance, and excellent water repellency; in particular, aerogel can lock a large amount of still air in a small space with extremely high thermal conductivity. Low, light weight and not easy to absorb water, excellent performance as a thermal insulation material. However, aerogel is a brittle material and cannot be directly applied to clothing, shoes, and other products that need to be bent during use and/or storage. Therefore, the aerogel must be made into particles or powder first. Make it adhere to or be wrapped in other substrates for use.
- the dust in down can also cause allergies, coughing, fainting eyes, sneezing, itching, chest tightness, dyspnea, dermatitis, rhinitis or other inflammations, long-term use can even cause serious diseases such as pneumoconiosis or silicosis. Therefore, in the existing known down quality evaluation system, the higher the dust content in the down, the worse the quality of the down product, and the lower the dust rate, the better the down quality. Therefore, the existing down factories have a special dust removal program in order to reduce the dust content in the down, the lower the better.
- the purpose of the present invention is to develop an "aerogel-modified down" material and its products that can prevent the aerogel powder from falling off and exuding from down products and at the same time have the excellent thermal insulation properties of down and aerogel.
- An aerogel modified down material includes down and aerogel powder.
- the aerogel powder is silica aerogel powder or carbon-based aerogel powder.
- the weight of the aerogel powder accounts for 1% to 99% of the total weight of the aerogel powder and down, preferably 30% to 60%.
- the beneficial effect of adopting the above-mentioned further solution is: because the pile-like structure has a great expansion space, a large amount of aerogel powder can be contained between the piles, the pile filaments and/or the pile thorns, and a great
- the weight ratio perfectly solves the problem that the aerogel content in the existing aerogel fiber does not exceed 1%, and the aerogel content in the aerogel composite felt generally does not exceed 30%. Since the density of aerogel can be made close to or far less than the density of fully expanded down feathers, the mass ratio of aerogel to down depends on the relaxation degree and material density of the feathers, from 1% to 99% is not a problem. It can easily break through the limitation of various existing technical solutions on aerogel content.
- This ratio can make full use of the advantages of these two materials to the greatest extent, and can obtain super thermal insulation ability. It also has the advantages of down fiber flexibility, agglomeration and air permeability, and avoids various shortcomings such as aerogel brittleness, expensive down and poor availability.
- the feathers of the above-mentioned down feathers are natural feather feather-like structures and/or artificial feather-like feather-like structures.
- the artificially manufactured fleece-like structure is a pompons, a fleece, a flannel and/or a flock.
- the pile cores of the pile-like structure can also be arranged or knitted together to form a pile, suede or pile-like structure;
- the aerogel powder is mixed into these woolen yarns, suede surfaces or flock-like structures to obtain aerogel modified materials with better thermal insulation performance, powder resistance performance, flexibility and/or tensile resistance.
- the present invention also provides an aerogel-modified down product, which is made of the above-mentioned aerogel-modified down material and a powder-repellent structure, the powder-repellent structure wraps or adheres outside the aerogel powder monomer particles ;
- the powder-repellent structure wraps or adheres outside the flocks filled with aerogel powder.
- the beneficial effect of the present invention is that the above-mentioned anti-powder structure fixes and/or confines the aerogel powder in or on the down, and the anti-powder structure may be a wrapping layer to wrap the aerogel particle monomer and/or Containing/adsorbing many aerogel particle monomers, velvet, velvet.
- the aerogel powder can be firmly bonded or confined within the down products through the one- or multi-level powder-repellent structure, so as to avoid human allergies, coughing, annoyed eyes, sneezing, hair Itching, chest tightness, dyspnea, dermatitis, rhinitis or other inflammations, as well as serious diseases such as pneumoconiosis or silicosis that may be caused by long-term use of powdered aerogel products. It also prevents the aerogel powder from washing and rubbing. Falling off, or the reduction of aerogel due to powder falling makes the thermal insulation performance worse, which improves the use effect and service life of down products.
- the above-mentioned aerogel-modified down product is made into a mass or a flat sheet, and the powder-repellent structure is wrapped or adhered to the surface of the mass or flat sheet of aerogel-modified down product.
- the above-mentioned anti-powdering structure is an organic coating layer and/or an inorganic coating layer, a structural glue, an adhesive/adhesive, a curing agent, a crosslinking agent, a coupling agent, or a film structure
- the organic coating layer is a cellulose derivative Type, polysulfone, polyamide, silicon-containing polymer, fluoropolymer, silicone glue, polyurethane glue, acrylate homopolymer or phase change polymer
- the inorganic coating layer is a silicon dioxide film, Ceramic membrane, metal membrane, zeolite membrane, glass membrane or molecular sieve composite membrane.
- aerogel-modified down material products are also filled with natural fibers, and/or artificial synthetic fibers, and/or high heat reflectivity materials, and/or far-infrared materials, and/or moisture-absorbing and heating materials, and/or relative Change material.
- the beneficial effect of adopting the above-mentioned further technical solution is that the overall heat preservation performance of the final product can be further improved.
- a high heat reflective material is provided in the down jacket to reflect the heat emitted by the human body back to the skin surface and reduce heat loss; far-infrared material It is more conducive to lock in heat, and can also reduce the heat loss of the human body; the moisture-absorbing heating material can absorb the moisture emitted by the human skin to generate heat, and the human body wrapped in it can obtain an additional heat source, so that the human body can obtain more heat faster.
- the above-mentioned modified down material is also filled with one or a mixture of cotton, wool, cashmere, feathers, hemp, polyester staple fiber, polyester filament, spandex yarn, and aramid fiber.
- filling the above-mentioned materials can reduce the amount of aerogel or down and reduce the cost, and at the same time, the respective physical or chemical properties of these materials can be utilized.
- the high elasticity of spandex fiber, the high strength of aramid fiber, the low cost of polyester yarn, and the skin affinity of cotton and linen fiber can be used to improve the performance of the aerogel-modified down product of the present invention.
- the above-mentioned wrapping layer is made of a high thermal reflectivity material or a far-infrared material
- the above-mentioned high thermal reflectivity material is an aluminum powder or an aluminum film
- the above-mentioned far infrared material is a far-infrared fiber.
- an electric heating device, a temperature sensor and/or a temperature control device are arranged inside or outside the modified down material.
- the beneficial effect of adopting the above-mentioned further technical solution is that an electric heating device is provided at the modified down material, which greatly improves the thermal insulation performance, and also obtains an additional heat source beyond the body temperature of the human body, which can make the human body wrapped in it Get more and faster heating, less temperature loss, especially suitable for applications in extreme environments such as polar regions and mountains.
- the temperature sensor and temperature control device can also be used to accurately control the temperature in the modified down material like the currently popular battery heating suit.
- the preparation method of the aerogel modified down product is:
- the modified down product is made into a mass or flat sheet, and the surface of the above-mentioned mass or flat sheet-shaped aerogel modified down material is sprayed or adhered to a powder-repellent structure to realize the fixation of the aerogel powder particles.
- Down has good thermal performance and high bulkiness.
- a large amount of aerogel powder can be filled in the voids formed by down and down.
- the thermal resistance of aerogel is greater than that of down.
- the final aerogel is Modified down material has much better thermal insulation effect than conventional down products; down is known natural fiber with the best thermal insulation performance, while aerogel thermal insulation performance is much better than down; both;
- the overall thermal insulation performance after mixing can be significantly improved compared with simple down products, and can be greatly improved exponentially compared with other cotton, linen, wool, chemical fiber or common blended products.
- Aerogel powder can be attached stably on the surface of down, which can increase the thermal resistance while obtaining relatively stable integrity.
- aerogel has extremely good water repellency, which can effectively avoid the problem of rapid decrease in insulation performance caused by water absorption or moisture absorption of down.
- the weight of aerogel required by the modified down material of the present invention is far lower than that required for down products with the same thermal insulation performance.
- the total weight and storage volume of the modified down material of the present invention can be significantly reduced, and at the same time, the amount of down used is reduced, and the thermal insulation capacity of the thick traditional down products can be equal or even stronger.
- ultra-thin down products such as ultra-thin down jackets, ultra-thin duvets, ultra-thin down caps, ultra-thin down gloves, ultra-thin down sleeping bags, ultra-thin down underwear and down shoes, etc.
- ultra-thin down products not only provides better thermal insulation
- the body movements are especially suitable for beauty-loving women and outdoor activity participants who require high mobility.
- the modified down material of the present invention can also enable the aerogel powder to be very firmly bonded or sealed in the modified down material through the multi-stage leak-proof structure, and the aerogel powder is adhered or clamped in the down In the space between the velvets, velvet filaments and/or velvet spines, it is not easy to fall out or fall, and there will be no powder falling; avoiding the aerogel powder falling from being inhaled by the human body, causing itchy throat, etc. Pneumoconiosis/silicosis and other serious quality problems and safety hazards. It can also prevent human dander and external dust from entering the down products, or the reduction of aerogels leads to poor thermal insulation performance, which improves the use of down materials Effect and service life.
- the density of aerogel is extremely small, the total weight of finished quilts, clothes, clothes and hats with the same thermal insulation performance can be significantly reduced; not only can reduce the pressing force to make people more comfortable, but also more convenient Carry and store.
- the thermal insulation performance of aerogel can be greatly stronger than that of down itself, the total weight, thickness and/or volume of the finished quilt, clothing, clothing, and cap that obtain the same thermal insulation performance can also be significantly reduced; People are more flexible and comfortable, and they are easier to store.
- the tensile strength, flexural strength and compressive strength are good. It becomes a good substrate for attaching or wrapping the aerogel powder.
- the resultant product is more flexible than the bulk aerogel. Performance, flexibility and durability can be significantly improved.
- the gaps between the first-order velvet, the second-order velvet and/or the spurs are relative to non-woven fabrics, cotton, hemp and other natural fibers, and polyester, aramid, spandex and other chemical fibers And/or the filament diameter and the inter-filament voids of the blended fibers of these materials are much larger, so the volume of aerogel can be quite large in the voids between the fleece filaments and/or thorns of various steps.
- the maximum distance can reach several centimeters, even in the part close to the fleece core, it can reach the millimeter level, so it is crushed into millimeter level, silk meter level, micron level or even nanometer level.
- the aerogel can be easily and massively placed into the velvet. Therefore, the weight ratio of aerogel in the above-mentioned aerogel down products with stable and reliable performance can not only easily exceed 1%, but also can exceed 99%. That is to say, the above-mentioned down feathers can even be used as a main insulation layer.
- the shape of the substrate is used instead of as a thermal insulation material.
- the common inherent contradictions of the above groups of down products can be easily solved: because the voids between or inside the feathers are mainly occupied by the aerogel powder, the inside or between the aerogel powder is still Air plays the main role of heat preservation and heat insulation.
- the still air inside or between the velvet, velvet and/or velvet only serves as the weakened auxiliary main function; and the aerogel powder is in the velvet, velvet and/or Or the fluff spines are inserted into the gaps between the piles, filaments and/or fluff spines under the condition that they are fully and naturally unfolded in the airflow, and the fluffiness of the down has reached or approached its maximum value and can remain relatively stable. Therefore, the bulkiness is relegated to a secondary factor that does not require special emphasis.
- the compression ratio of the down containing the aerogel powder will be significantly reduced, not only the thermal insulation performance is significantly improved, but also the product shape retention ability Can also be significantly improved. It is similar to the relationship between steel and concrete in the reinforced concrete structure of the building: although the simple steel has good tensile strength, it cannot bear the heavy pressure under the weight of the building, and it is easy to bend and fall; the simple concrete has good compressive strength, but no The pulling action of the steel bars is easy to crack or be crushed; after filling the concrete between the steel bars, both of them play their respective advantages, so that the reinforced concrete structure is resistant to compression and tension and will not easily crack, which greatly helps maintain the building The shape is not destroyed.
- the down filaments and/or lint thorns of the above-mentioned down play a role similar to steel bars, and the above aerogel powder acts as a concrete-like function: the soft and wavy flexible lint and/or lint thorns and both are filled with
- the flexible fluff/hair thorns can give full play to its tensile capacity and aerogel to exert its compressive capacity, and finally the shape retention performance of the product is greatly improved.
- the above technical scheme of the present invention can significantly reduce the amount of down. Not only the improvement of the overall thermal insulation capacity can make the product thinner and smaller, thereby reducing the amount of down, but also the compression ratio of down and most of the inside of the down.
- the single and combined effect of multiple factors such as space occupied by aerogel can significantly reduce the amount of down; this is also an important aspect worth considering at the time when the availability of down is getting worse and the price is getting more and more expensive.
- the down as the base material plays a secondary or even negligible thermal insulation role, so it can be used with lower bulkiness, lower porosity, and down content.
- the relatively inferior down with less and higher feather content has the same or even more thermal insulation performance. Therefore, relatively inferior down can be used to obtain the same or even more thermal insulation capacity, which can reduce costs and expand the source of raw materials.
- aerogel is a material with good flame retardancy. Compared with the natural defects of traditional down jackets that are easy to catch fire and easy to spread to the down filling, the fire safety of aerogel modified down is significantly improved.
- Duvets and down jackets are very mature industries, and their production processes and equipment are stable and reliable, easy to obtain, and low production costs.
- the aerogel powder can be blown into a violent boiling state that moves synchronously with the airflow, and then sprayed at a high speed at a rate of no less than 3.2 m/s from the nozzle to the boiling aerogel powder stream, including silicone glue, polyurethane glue Fine droplets of organic and/or inorganic structural adhesives, adhesives/adhesives, curing agents, crosslinking agents, coupling agents, etc., including acrylate homopolymer structures, phase change polymers, etc.
- the droplets of binder, curing agent, crosslinking agent, and coupling agent will wrap the aerogel powder and form a shell-like coating on the outside.
- the high-speed fan is set at the bottom of the sealed space.
- the aerogel particles with too thick coating layer are easy to layer to the bottom of the sealed space due to their high density and are hit by the high-speed rotating fan blades, causing the liquid coating layer to be scratched, Collision, reduction or even shedding, the density of aerogel particles becomes smaller, they can float to the middle and upper part of the confined space again with the airflow, so as to be picked up through the screen or re-sprayed.
- the thickness of the wrapping layer can be controlled to be 3-8 ⁇ m.
- the type and amount of the specific anti-powder structure should be appropriately selected according to its own physical and chemical properties and the type/physical and chemical properties of the aerogel material.
- the silicon-based aerogel is silica
- use glass glue that is easy to combine with silica /Silicone glue component as the wrapping layer.
- the aerogel powder monomer is evenly wrapped, the down is blown into the closed space, and the blown down feathers will repeatedly roll and/or stir together with the wrapped aerogel powder particles in the closed space with the airflow ;
- the velvet is repeatedly tumbling and/or stirred and fully unfolded with the airflow, the aerogel powder with the wrapped layer floating in the airflow can enter the velvet, the velvet filaments and/or the velvet thorns.
- aerogel modified down products are prepared, and the surface of the shell layer outside the aerogel particles will be bonded with the down feathers, various steps of down and/or thorns to achieve air resistance. Fixation of gel powder particles. These mixtures are pressed into sheets or molded into dough shapes, which can be used as fillers for clothing, quilts, sleeping bags, cold-proof gloves, etc.
- a purge step can be taken before pressing or molding the mixture: these freely movable aerogel powders are lightly clamped on the screen or formed The mixture in the mold is purged out and used in the subsequent mixing process.
- the fixed or restricted free dust is reduced to a minimum or even zero.
- the aerogel-modified down product prepared in this way has a large number of penetrating pinholes, and there is no phenomenon of powder falling or not obvious. Because the free dust has been swept away, the aerogel particles fixed in the down are wrapped by the coating layer and adhered to the down, and they are not easy to fall off; and during use, even the aerogel particles in the coating layer are squeezed by external force. The crumbs are more broken, and the debris is still wrapped in the wrapping layer, and will not leak, and will not cause the reduction of aerogel components in the product.
- the sealed space into which the aerogel powder is blown can be made of existing machinery and equipment, including a sifter, a pile box, a pile divider, a five-box divider, a mixing box, and/or a pile filling machine. With a closed box and multiple nozzles and fans, the required mixing space can be obtained. These machines have reliable performance, easy operation and good availability.
- crospovidone is used as the coating layer and sprayed uniformly on the fluidized bed formed by aerogel powder and down, and then cured and pressed into a flat structure with a length of about 5 mm, which is an ultra-lightweight The filling material of aerogel modified duvet.
- polyvinyl alcohol-polyglutamic acid polymer is used as a coating layer and mixed on a fluidized bed formed by aerogel powder and down, and after curing, it is pressed into a planar structure with a length of about 2 mm.
- the filling material of ultra-light aerogel modified down jacket is used as a coating layer and mixed on a fluidized bed formed by aerogel powder and down, and after curing, it is pressed into a planar structure with a length of about 2 mm.
- a 6:2:1 mixture of aerogel powder, down and hot-melt adhesive powder is blown into a closed box; the extension machine is turned on for at least 20 minutes to mix them evenly; The body temperature rises to 113 degrees Celsius, turning the solid hot melt adhesive particles mixed therein into liquid hot melt adhesive droplets; continue to stir and mix the mixture containing hot melt adhesive droplets, and gradually stabilize the temperature in the box from 113 degrees Celsius When the temperature is lowered to room temperature, the hot-melt adhesive droplets solidify, and most of the aerogel powder and down are fixed together. Finally, the unfixed aerogel powder is purged out of the mixture and recycled. That is, it is worth an aerogel modified down material that can withstand high washing temperatures.
- the aerogel powder is passed through a long-stroke folded trachea.
- the inside and/or inner surface of the trachea has a certain electrostatic charge and electrostatic voltage.
- the aerogel powder enters through the folded trachea in the form of fluid Before the mixing box, the aerogel powder continuously collides with the inner surface of the trachea with static electricity or the inner conductor of the tube.
- the aerogel powder is charged during the collision, or the aerogel material is selected according to the friction of the aerogel material to generate static electricity.
- the aerogel powder When the anti-powder structure is in powder form, the above method of making the aerogel powder electrostatically charged can also be used to make the anti-powder structure electrostatically charged; when the anti-powder structure is in liquid form, it can follow the similar principle of the electrostatic spinning method. When an electrostatic voltage is applied to the nozzles, the mist particles sprayed through these nozzles will carry the electrostatic charge transferred from the nozzles.
- the aerogel powder When the aerogel powder is not easily combined with structural glue, adhesive/adhesive, curing agent, crosslinking agent or coupling agent, etc., it can also be used for aerogel powder and/or structural glue, adhesive/adhesive, etc.
- the curing agent, crosslinking agent, and coupling agent droplets are charged with different kinds of electrostatic charges first, and then through the principle of electrostatic "same sex repulsion, opposite sex attraction" principle, not only can accelerate the aerogel powder and structural adhesive with opposite sex charge , Adhesive/adhesive, curing agent, crosslinking agent, coupling agent droplets, but also can selectively make certain types of powder and droplets less or not combined, for example, the same-charged liquid
- the droplets are difficult to combine into large droplets due to mutual repulsion, so that the droplet distribution is more uniform and longer, and it is more conducive to find aerogel powder with opposite charges for combination.
- the droplets can spread more uniformly and quickly on the surface of the aerogel particles and finally Enclose the aerogel powder particles completely.
- the fleece and/or fleece itself can also be charged with static electricity opposite to the aerogel particles or the shell layer that wraps it, so that the fleece and the aerogel powder particles or the shell layer that wraps it can be faster, Better and stronger together.
- the adhesive can be sprayed again on the aerogel-modified down that has been evenly mixed, or a wrapping layer can be arranged on the aerogel-modified down to further strengthen the aerogel powder particles and the feathers.
- the fastness of the combination of velvet and velvet spines, and finally the aerogel down is made into down products including down jackets, duvets, down sleeping bags, and down caps.
- This kind of aerogel powder has a multi-layered anti-powder structure, and it is more difficult to fall off and cause the phenomenon of powder fall.
- this multi-layer protection can also reduce the impact of the external environment on the aerogel powder, reduce or even avoid aerogel Gum powder particles are further crushed or refined.
- Another advantage of providing a shell layer outside the aerogel powder particles is that even if the aerogel powder particles are further crushed or refined during the use of the product, the crushed or refined powder will still be Tightly wrapped in the shell, it is not easy to drill out of the shell or fall off.
- a moisture-absorbing heating fiber is added to the mixture of aerogel powder and down, and the moisture-absorbing heating fiber emits heat after absorbing the water vapor emitted by the human skin. Therefore, the aerogel with moisture-absorbing heating fiber is added Modified down can not only greatly improve the overall thermal insulation performance of the product, but also enable the human body wrapped in it to obtain an additional heat source besides body temperature, which can enable the human body to obtain more and faster heating and less temperature loss, especially Suitable for applications in extreme environments such as polar regions and mountains.
- heating fiber blended fabric or electric heating device (such as fine electric heating wire, etc.) is provided at the modified down material, and the heating fiber blended fabric or electric heating device generates heat, which greatly improves the thermal insulation performance. At the same time, it can also obtain an additional heat source besides the body temperature of the human body, which can make the human body wrapped in it get more and faster heating up and less temperature loss, especially suitable for applications in extreme environments such as polar regions and mountains.
- a temperature sensor and a temperature control device are used to accurately control the temperature in the modified down material.
- Setting a voltage or current regulating circuit at the battery power supply can realize temperature regulation. It is also possible to install a temperature sensor sheet on the clothing, and use the liquid crystal microcrystals in the temperature sensor sheet to become transparent or fuzzy at different temperatures to indicate the temperature so that the user can adjust the temperature reasonably.
- a far-infrared material that is, a ceramic powder with far-infrared radiation function
- Far-infrared ceramic powder particles can absorb electromagnetic waves emitted by the environment and the human body in a wide wavelength range and radiate far-infrared rays with a wavelength range of 2.5-30 ⁇ M, of which the infrared rays with a wavelength range of 4-14 ⁇ M are related to the vibration of water molecules in human cells.
- a high-reflectivity material such as aluminum powder
- the high-reflectivity material can reflect the heat emitted by the human body, reduce heat loss, and further improve the aerogel modification. The warmth retention performance of sexual down material products.
- an aluminum film or aluminum film can also be attached to the inner surface of the aerogel-modified down. It can achieve the purpose of improving heat reflectivity and warmth retention.
- the mixture of aerogel powder and down is mixed with spandex filaments with an initial volume ratio of about 20%, stirred uniformly and sprayed with polyvinyl acetate aerosol, and the thickness of the resulting mixture is about 1 mm at the compression position The surface structure.
- the spandex filaments are uniformly cured between the piles, piles and/or aerogel wrapping layers. Since the spandex yarn has excellent elasticity and toughness, the elasticity and toughness of the spandex aerogel modified down products prepared thereby can be greatly improved.
- silk, cotton, and/or hemp cloth can also be pasted on the inner and outer surfaces of the 1 mm planar structure to obtain better skin contact comfort.
- the spandex aerogel modified down in this embodiment is particularly good for its warmth retention, elasticity and toughness, and is especially suitable for making thermal underwear.
- a spandex filament with an initial volume ratio of about 3% is mixed into the mixture of aerogel powder and down, and the final mixture is not compacted to about 1 mm but is allowed to deposit and solidify in a natural way .
- the bulkiness of the obtained spandex aerogel modified down will be particularly good, and the bulkiness recovery performance after being compressed and decompressed will be much better than conventional down products.
- a simple down product has a bulkiness of 600, 700 or even higher, its down is always in a state of being squeezed to varying degrees.
- the down Duo has been fully expanded when mixed with aerogel powder, so its bulkiness will be much greater than that of piles in different degrees of squeezed state.
- the bulkiness can reach 800, 1000, 2000 or even 3000.
- the fully expanded down feathers and/or down yarns are filled with aerogel powder. Therefore, when the aerogel modified down is compressed, its volume is not easy to shrink compared to pure down, so the bulkiness can be The larger the thermal insulation performance, the better. After adding a small amount of spandex yarn, these flocks and/or aerogel flocks can be connected elastically and toughly, and the product shape can be better maintained.
- the initial temperature in the box is the dry temperature of the washed down, about 110 degrees; the box size is 5 meters long, 5 meters wide, and 20 meters high, and at least methyl methacrylate and polybutyl acrylate are set in the box And/or the nozzle of the mixture of poly-2-ethyl ethyl acrylate, spray the mist of methyl methacrylate, polybutyl acrylate and/or poly-2-ethyl ethyl acrylate mixture after the two are mixed uniformly Droplets and cool the box at a rate of 5 degrees Celsius every 10 minutes, down, aerogel, methyl methacrylate, polybutyl acrylate and/or poly-2-ethyl ethyl acrylate mixture will gradually Decrease
- polybutyl acrylate has a glass transition temperature of -54 degrees Celsius and poly-2-ethyl ethyl acrylate The glass transition temperature is -72 degrees Celsius. Both polybutyl acrylate and poly-2-ethyl acrylate are very soft polymers. In this way, the degree of softness and hardness of the homopolymer and the final mixed material can be achieved by controlling the cooling process control.
- thermal curing is achieved by adjusting the temperature of the mixture. If necessary, select the appropriate type of aerogel and curing agent.
- a wide variety of chemical reaction curing, UV curing, and material phase change curing (sublimation-sublimation , Vaporization-liquefaction, melting-condensation and other reversible processes).
- the thermal conductivity of 95 velvet is about 0.09 W/m-degree Celsius, while the thermal conductivity of the 2 mm soft felt is only about 0.03 W/m-degree Celsius.
- the down aerogel soft felt can not only be made into one-tenth the thickness of the same 95 velvet, but also can increase the thermal insulation and cold resistance by about 3 times.
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Abstract
Description
将气凝胶粉末混入闭孔发泡材料和/或膜材料的方案,不但同样面临气凝胶粉末难以高比例混入的难题、发泡产品不但气味严重,而且为了防止产品掉粉必须将发泡材料做成闭孔结构的基材,导致最终产品透气性差、闷热、易过敏、皮肤适应性极极差。目前市场上已有几款基于将气凝胶粉末复合入闭孔发泡材料的气凝胶服装,均出现了不透气、气凝胶含量太小导致其保温防寒效果远达不到其宣传的效果。
Claims (10)
- 一种气凝胶改性羽绒材料,其特征在于,包括羽绒和气凝胶粉末。
- 根据权利要求1所述一种气凝胶改性羽绒材料,其特征在于,所述气凝胶粉末为二氧化硅气凝胶粉末或碳气凝胶粉末。
- 根据权利要求1所述一种气凝胶改性羽绒材料,其特征在于,所述气凝胶粉末的重量占所述气凝胶粉末和羽绒总重量的1%-99%。
- 根据权利要求1所述一种气凝胶改性羽绒材料,其特征在于,所述羽绒的绒朵为天然羽绒的绒朵状结构和/或人工制造的仿绒朵状结构。
- 根据权利要求4所述一种气凝胶改性羽绒材料,其特征在于,所述人工制造的仿绒朵状结构为绒球、绒线、绒布和/或绒团。
- 一种气凝胶改性羽绒制品,其特征在于,由防掉粉结构和权利要求1-5任一项所述气凝胶改性羽绒材料制成;所述防掉粉结构包裹或黏附在气凝胶粉末单体颗粒外;和/或所述防掉粉结构包裹或黏附在填充了气凝胶粉末的绒朵之外。
- 根据权利要求6所述一种气凝胶改性羽绒制品,其特征在于,将所述气凝胶改性羽绒制品制成团状或者平面片状,在所述团状或者平面片状的气凝胶改性羽绒制品表面包裹或黏附防掉粉结构。
- 根据权利要求6所述一种气凝胶改性羽绒制品,其特征在于,所述防掉粉结构为有机包裹层和/或无机包裹层、结构胶、粘/黏合剂、固化剂、交联剂、偶联剂或膜结构;所述有机包裹层为纤维素衍生物类、聚砜类、聚酰胺类、含硅聚合物、含氟聚合物类、硅酮胶、聚氨酯胶、丙烯酸酯均聚物或相变聚合物;所述无机包裹层为二氧化硅膜、陶瓷膜、金属膜、沸石膜、玻璃膜或分子筛复合膜。
- 根据权利要求6所述一种气凝胶改性羽绒制品,其特征在于,所述气凝胶改性羽绒材料制品还填充有天然纤维、和/或人工合成纤维、和/或高热反射 率材料、和/或远红外材料、和/或吸湿发热材料、和/或相变材料。
- 根据权利要求6所述一种气凝胶改性羽绒制品,其特征在于,所述包裹层为高热反射率材料或远红外材料;所述高热反射率材料为铝粉或铝膜,所述远红外材料为远红外纤维。
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CN114195495A (zh) * | 2020-10-17 | 2022-03-18 | 朱晶晶 | 一种二氧化硅气凝胶复合保温面料 |
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CN110846891A (zh) * | 2019-11-26 | 2020-02-28 | 鑫创新材料科技(徐州)有限公司 | 一种气凝胶复合纤维的制造方法与应用 |
CN111394810B (zh) * | 2020-03-24 | 2021-06-11 | 苏州经结纬面料科技有限公司 | 一种仿羽绒制备装置及其工作方法 |
TWI808560B (zh) * | 2021-12-10 | 2023-07-11 | 光隆實業股份有限公司 | 提高化纖填充材料保暖性能的方法及化纖填充材料 |
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