Heat preservation and warmth retention composite fabric inspired by polar bear skin structure and preparation method of heat preservation and warmth retention composite fabric

Abstract

The invention relates to the technical field of composite fabrics, in particular to a heat-preservation and warm-keeping composite fabric inspired by the polar bear skin structure and a preparation method, the heat-preservation and warm-keeping composite fabric is composed of a surface layer, a middle layer and an inner layer, and the surface layer is a polyester yarn raw white fabric which is of a hollow structure and is added with far-infrared heating functional particles; the middle layer is a high-moisture-permeability polyurethane black film added with far infrared functional particles; the inner layer is a yellow knitted polar fleece which is of a hollow structure and is processed by polyester yarns added with far infrared heating functional particles; the surface layer, the middle layer and the inner layer are adhered together through a lamination compounding process. The far-infrared thermal-insulation board is simple in production and processing mode, excellent in far-infrared performance and moisture permeability, high in thermal insulation rate, high in practicability and capable of effectively resisting severe cold of ice and snow weather in winter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite fabrics, in particular to a thermal and warm-keeping composite fabric inspired by the skin structure of polar bears and a preparation method. BACKGROUND

[0002] Polar bears have a unique skin structure that has adapted to the extremely cold weather environment in the Arctic. The fur structure from the outer layer to the inner layer is fur, skin, and subcutaneous fat. The fur layer is composed of outer fur and inner fur. The outer fur layer is long and rigid, and its surface is covered with a layer of oil, which has windproof and waterproof functions. The inner fur is short, dense, soft and delicate, and plays a role in thermal insulation. Both the outer fur and the inner fur have a hollow structure, which can further "lock" still air, providing thermal insulation. The skin is black, which facilitates the absorption of far-infrared rays in sunlight in the cold Arctic and the transfer of heat energy to the body. The thick yellow fat layer can provide heat for the body by consuming fat. The skin and fat layer can simultaneously reflect part of the far-infrared radiation emitted by the body, reducing heat loss.

[0003] The present application is inspired by the skin structure of polar bears and simulates the preparation of a "polar bear thermal and warm-keeping fabric". The composite fabric is composed of three layers: the surface layer, the middle layer, and the inner layer. The surface layer is selected from hollow polyester yarn with far-infrared heating functional particles. The polyester yarn is dyed white, and after the water-repellent finishing process, it is processed into a waterproof fabric, which is "the fur of a polar bear". The middle layer is a high-moisture-permeable polyurethane black film with far-infrared functional particles, which is "the skin of a polar bear". The inner layer is a yellow knitted shake-pile fabric made of hollow polyester yarn with far-infrared heating functional particles, which is "the subcutaneous fat of a polar bear". SUMMARY

[0004] The present application provides a thermal and warm-keeping composite fabric inspired by the skin structure of polar bears, which is composed of a surface layer, a middle layer, and an inner layer.

[0005] The surface layer is a hollow polyester yarn with far-infrared heating functional particles.

[0006] The middle layer is a high-moisture-permeable polyurethane black film with far-infrared functional particles.

[0007] The inner layer is a yellow knitted shake-pile fabric made of hollow polyester yarn with far-infrared heating functional particles.

[0008] Further, the surface layer, the middle layer, and the inner layer are laminated together by a lamination process.

[0009] The present application also provides a preparation method for a thermal and warm-keeping composite fabric inspired by the skin structure of polar bears, which includes the following steps:

[0010] Step one: the manufacturing of polyester yarn fabric with hollow structure and added far infrared heating functional particles, specifically as follows:

[0011] Selecting hollow polyester yarn with a certain content of far infrared heating functional particles as warp and weft yarns, designing suitable fabric organization, and weaving through water jet loom to form far infrared functional fabric with uneven surface structure (the uneven surface structure of the fabric is more conducive to the scattering, absorption and conversion of light waves, improving the heat collecting and warming performance of the fabric), and processing into waterproof fabric through waterproof finishing process to obtain the surface layer, ready for use;

[0012] Step two: the manufacturing of high moisture permeable polyurethane black film added with far infrared functional particles, specifically as follows:

[0013] During the dissolution of polyurethane resin in solvent, add appropriate proportion of far infrared functional particles and stir until completely uniform; then uniformly coat the mixed phase solution on release paper through "roll coating method", immerse the composite product into water and N,N-dimethylformamide (DMF) mixed solution for solvent exchange to form microporous structure, and then prepare the film through water washing and hot air drying, and adjust the process parameters to prepare functional black film with different thickness requirements, obtaining the middle layer, ready for use;

[0014] Step three: the preparation of hollow structure and far infrared heating functional particle added shake pile fabric, specifically as follows:

[0015] Selecting hollow polyester yarn with a certain content of far infrared heating functional particles of appropriate specification to weave into precursor knitted fabric suitable for processing shake pile, and then carry out fabric preparation (the fabric preparation is to ensure that the produced and processed shake pile is flat and wrinkle-free), dyeing at a suitable temperature to a color close to polar bear fat, dehydration, drying, cutting (the cutting is to cut the "shake pile" into a width suitable for subsequent composite processing), napping (the napping is to brush the fabric surface flat with a napping machine first, and then bend the needle machine to break the fibers on the loop to form thick and fluffy pile), carding and shearing (the carding is to ensure that the pile is straight and maintains a three-dimensional effect, and the shearing is to ensure that the pile length is uniform), shaking (the shaking process is double brushing and double shaking, that is, both sides of the fabric are treated with brushing and shaking to make the fabric thick and more warm-keeping, and more high-end), and finally, the far infrared functional shake pile with appropriate grammage is manufactured, that is, the inner layer is obtained, ready for use;

[0016] Step four: the far infrared functional fabric, far infrared functional heating black film and far infrared functional heating shake pile are manufactured into "warm-keeping and warm-keeping composite fabric inspired by polar bear skin structure" through laminating composite process.

[0017] Further, in step one, step three, the polyester yarn can be drawn textured yarn (DTY), specifications include 65D / 80F, 75D / 80F, 100D / 80F, 150D / 160F, etc.; or full-drawn yarn (FDY), specifications include 65D / 80F, 75D / 80F, 100D / 80F, 150D / 160F, etc.

[0018] Further, in step one, step three, the added far-infrared heating functional particles are composite nano ceramic particles composed of two or more of zirconium oxide, zirconium carbide, aluminum oxide, magnesium oxide, titanium dioxide, silicon dioxide, silicate ore powder, etc.

[0019] Further, in step one, step three, the content of far-infrared functional particles in the polyester yarn is 10% wt.

[0020] Further, in step one, step three, the hollow structure of the polyester yarn has a hollow rate of 30%.

[0021] Further, in step one, the designed fabric organization is one of the following: mittonge organization, honeycomb organization, convex strip organization, heavy weft organization, heavy warp organization, etc.

[0022] Further, in step one, the fabric finishing process is a fluorine-free waterproof finishing process, which is a fluorine-free waterproof finishing process that does not contain fluorine-based organic compounds, is green and environmentally friendly, and has less environmental pollution.

[0023] Further, in step two, the far-infrared functional particles are one of carbon black graphite, graphene, and ceramic powder containing iron, manganese, cobalt, and other dark metal oxides, making the color of the film black.

[0024] Further, in step two, the added amount of far-infrared functional particles is 5% wt of the mass of the polyurethane moisture permeable film.

[0025] Further, in step two, the thickness of the functional black film is one of 0.012mm, 0.015mm, and 0.02mm specifications.

[0026] Further, in step three, the dyeing temperature condition is 120℃, and the color of the finished product is one of yellow, light yellow, brown yellow, gray, gray yellow, and dark gray, mainly to approach the color of the polar bear fat layer.

[0027] Further, in step three, the setting process temperature is 180℃.

[0028] Further, in step three, the production and processing of the puffy down jacket has a weight of 180-250g / m 2 range.

[0029] Further, in step four, the laminating composite process mainly includes the steps of glue transfer coating, preliminary compounding, secondary compounding, curing and cooling, wherein:

[0030] In the glue transfer coating, the glue is water-based polyurethane glue, which is first coated on release paper and then transferred to the fabric;

[0031] The preliminary compounding is to form a double-layer structure of the fabric and the black film under the heavy pressure of the rubber roll at 120 DEG C;

[0032] The secondary compounding is to coat the water-based polyurethane glue on the release paper and then transfer it to the surface of the black film;

[0033] The double-layer structure of the fabric and the black film and the shake n' pique form a three-layer composite structure under the heavy pressure of the rubber roll at 140 DEG C.

[0034] (Three) technical effects

[0035] The above structure makes the present scheme have the following beneficial effects:

[0036] The multi-layer thermal insulation material composite warm-keeping fabric inspired by the structure of polar bear skin is simple in production and processing, has excellent far-infrared performance and moisture permeability, high thermal insulation rate, strong practicability, can effectively resist the cold of ice and snow weather in winter, and has wide application prospect in the field of down jacket fabrics. DETAILED DESCRIPTION

[0037] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application, serve to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0038] Figure 1 It is a structural schematic diagram of the present scheme.

[0039] Among them, 1, surface layer, 2, middle layer, 3, inner layer. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0041] Example 1:

[0042] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder, weave the fabric of the mitong structure on the water jet loom according to the mitong organization, and the waterproof functional fabric is formed after fluorine-free waterproof finishing;

[0043] Select the polyurethane moisture-permeable black film with a thickness specification of 0.015mm and an added amount of 5% carbon black graphite to preliminarily composite with the mitong fabric after waterproof finishing into a double-layer structure;

[0044] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder to make the knitted fabric of the shake-pile before dyeing to the color close to the fat of polar bear at a suitable temperature, and the far infrared heating functional shake-pile with a weight of 180g / m2 is manufactured through the processes of dewatering, drying, splitting, grabbing, carding, shearing and shaking;

[0045] After secondary compounding, the double-layer structure of the mitong fabric combined with the polyurethane black film and the shake-pile finally form the heat preservation and warm-keeping composite fabric inspired by the polar bear skin structure.

[0046] Example 2:

[0047] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder, weave the fabric of the mitong structure on the water jet loom according to the mitong organization, and the waterproof functional fabric is formed after fluorine-free waterproof finishing;

[0048] Select the polyurethane moisture-permeable black film with a thickness specification of 0.015mm and an added amount of 5% carbon black graphite to preliminarily composite with the mitong fabric after waterproof finishing into a double-layer structure;

[0049] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder to make the knitted fabric of the shake-pile before dyeing to the color close to the fat of polar bear at a suitable temperature, and the far infrared heating functional shake-pile with a weight of 180g / m2 is manufactured through the processes of dewatering, drying, splitting, grabbing, carding, shearing and shaking;

[0050] After secondary compounding, the double-layer structure of the mitong fabric combined with the polyurethane black film and the shake-pile finally form the heat preservation and warm-keeping composite fabric inspired by the polar bear skin structure.

[0051] Example 3:

[0052] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder, weave the fabric of honeycomb structure on the water jet loom according to the honeycomb organization, and the waterproof functional fabric is formed after fluorine-free waterproof finishing;

[0053] Select the thickness specification of 0.015mm of polyurethane moisture permeable black film added with 5% composite metal oxide ceramic powder and the preliminary composite of the mi-tongge fabric after waterproof finishing into a double-layer structure;

[0054] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder to make the knitted fabric of the front body of the shake-pile, dye it into the color close to the fat of the polar bear at the appropriate temperature after the cloth is arranged, and finally make the far infrared heating functional shake-pile of 180g / m2 in weight after the processes of dehydration, drying, splitting, rubbing, carding, shearing and shaking;

[0055] After the secondary composite, the double-layer structure of the mi-tongge fabric combined with the polyurethane black film and the shake-pile finally form the heat preservation and warm-keeping composite fabric inspired by the polar bear skin structure.

[0056] Example 4:

[0057] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder, weave the fabric of honeycomb structure on the water jet loom according to the honeycomb organization, and the waterproof functional fabric is formed after fluorine-free waterproof finishing.

[0058] Select the thickness specification of 0.015mm of polyurethane moisture permeable black film added with 5% carbon black graphite and the preliminary composite of the mi-tongge fabric after waterproof finishing into a double-layer structure;

[0059] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder of far infrared functional nano composite ceramic powder to make the knitted fabric of the front body of the shake-pile, dye it into the color close to the fat of the polar bear at the appropriate temperature after the cloth is arranged, and finally make the far infrared heating functional shake-pile of 180g / m2 in weight after the processes of dehydration, drying, splitting, rubbing, carding, shearing and shaking;

[0060] After the secondary composite, the double-layer structure of the mi-tongge fabric combined with the polyurethane black film and the shake-pile finally form the heat preservation and warm-keeping composite fabric inspired by the polar bear skin structure.

[0061] Example 5:

[0062] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder, far infrared functional nano composite ceramic powder, and weave the fabric into a micromesh structure on a water jet loom, and make it into a waterproof functional fabric after fluorine-free waterproof finishing;

[0063] Select polyurethane moisture-permeable black film of 0.02mm thickness specification with 5% graphene added, and preliminarily composite the micromesh fabric after waterproof finishing into a double-layer structure;

[0064] Select polyester drawn textured yarn (DTY) of 75D / 80F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder, far infrared functional nano composite ceramic powder, and make it into a fleece precursor knitted fabric, dye it into a color close to polar bear fat at a suitable temperature, and make it into a far infrared heating functional fleece with a weight of 180g / m2 through dehydration, drying, splitting, napping, carding, shearing, and shaking processes;

[0065] After secondary compounding, the double-layer structure of the micromesh fabric combined with the polyurethane black film and the fleece finally form a "thermal insulation and warmth composite fabric inspired by the polar bear skin structure".

[0066] Example 6:

[0067] Select polyester drawn textured yarn (DTY) of 150D / 160F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder, far infrared functional nano composite ceramic powder, and weave the fabric into a micromesh structure on a water jet loom, and make it into a waterproof functional fabric after fluorine-free waterproof finishing;

[0068] Select polyurethane moisture-permeable black film of 0.015mm thickness specification with 5% graphene added, and preliminarily composite the micromesh fabric into a double-layer structure;

[0069] Select polyester drawn textured yarn (DTY) of 150D / 160F specification, 30% hollow ratio, added with 10% zirconium oxide mixed with silicate ore powder, far infrared functional nano composite ceramic powder, and make it into a fleece precursor knitted fabric, dye it into a color close to polar bear fat at a suitable temperature, and make it into a far infrared heating functional fleece with a weight of 230g / m2 through dehydration, drying, splitting, napping, carding, shearing, and shaking processes;

[0070] After secondary compounding, the double-layer structure of the micromesh fabric combined with the polyurethane black film and the fleece finally form a "thermal insulation and warmth composite fabric inspired by the polar bear skin structure".

[0071] Example 7:

[0072] Select polyester full-drawing yarn (FDY) of 75D / 80F specification, 30% hollow rate, and far-infrared functional nano-composite ceramic powder mixed with 10% zirconium oxide and silicate ore powder, and weave the fabric into a micromesh structure on a water-jet loom. After fluorine-free waterproof finishing, the micromesh fabric becomes a waterproof functional fabric.

[0073] Select polyurethane black film of 0.015 mm thickness specification and 5% composite metal oxide ceramic powder, and preliminarily composite the micromesh fabric after waterproof finishing into a double-layer structure.

[0074] Select polyester full-drawing yarn (FDY) of 75D / 80F specification, 30% hollow rate, and far-infrared functional nano-composite ceramic powder mixed with 10% zirconium oxide and silicate ore powder, and weave the fabric into a micromesh structure on a water-jet loom. After fluorine-free waterproof finishing, the micromesh fabric becomes a waterproof functional fabric.

[0075] After secondary compounding, the double-layer structure of the micromesh fabric combined with the polyurethane black film and the shake wool finally form a "thermal insulation and warmth composite fabric inspired by the skin structure of polar bear".

[0076] Example 8:

[0077] Select polyester full-drawing yarn (FDY) of 75D / 80F specification, 30% hollow rate, and far-infrared functional nano-composite ceramic powder mixed with 10% zirconium oxide and silicate ore powder, and weave the fabric into a micromesh structure on a water-jet loom. After fluorine-free waterproof finishing, the micromesh fabric becomes a waterproof functional fabric.

[0078] Select polyurethane black film of 0.015 mm thickness specification and 5% graphene, and preliminarily composite the micromesh fabric after waterproof finishing into a double-layer structure.

[0079] Select polyester full-drawing yarn (FDY) of 75D / 80F specification, 30% hollow rate, and far-infrared functional nano-composite ceramic powder mixed with 10% zirconium oxide and silicate ore powder, and weave the fabric into a micromesh structure on a water-jet loom. After fluorine-free waterproof finishing, the micromesh fabric becomes a waterproof functional fabric.

[0080] After secondary compounding, the double-layer structure of the micromesh fabric combined with the polyurethane black film and the shake wool finally form a "thermal insulation and warmth composite fabric inspired by the skin structure of polar bear".

[0081] The far infrared emissivity and far infrared radiation temperature rise of the composite fabric of each example were tested according to GB / T 30127-2013 "Textiles - Determination and evaluation of far infrared performance" and the results are shown in Table 1.

[0082] The standard provides that the far infrared emissivity reaches 0.88 or more, and the far infrared radiation temperature rise reaches 1.4℃ or more, which can be considered as far infrared functional textiles. From Example 1 to Example 8, all meet the national standard.

[0083] In Example 1, Example 2, and Example 3, the far infrared functional particles added in the polyurethane moisture permeable film are different. The far infrared emissivity and far infrared radiation temperature rise performance of carbon black and graphite are weak. The far infrared emissivity and far infrared radiation temperature rise performance of the polyurethane moisture permeable film added with graphene composition or black metal oxide composite ceramic powder are better.

[0084] Example 4 is different from Example 1 in that the fabric organization used is different. The honeycomb organization has better concave-convex nature on the cloth surface, better absorption, scattering, and conversion of light, and higher far infrared emissivity and far infrared radiation temperature rise performance. However, the weaving difficulty of honeycomb organization is relatively large.

[0085] In Example 5, the thickness of the polyurethane functional film is slightly higher than that of Example 2. The thicker the functional film, the more far infrared functional particles it contains, and the better the far infrared emissivity and far infrared radiation temperature rise results.

[0086] When the yarn specification is changed to be thicker, the woven fabric becomes thicker, and the weight of the fleece produced using the same yarn is higher and thicker. The far infrared emissivity and far infrared radiation temperature rise results of Example 6 are significantly different from those of Example 2.

[0087] Example 7 is slightly different from Example 3 in terms of yarn form. The far infrared emissivity of the functional yarn using stretch textured yarn is close to that of the functional yarn using fully drawn yarn, but the far infrared radiation temperature rise result of the former is slightly higher. As the yarn fineness becomes thicker, the fabric and the weight of the fleece increase accordingly, the fabric becomes thicker, and the content of far infrared functional particles is higher, so the far infrared performance is better. The far infrared performance of Example 6 and Example 8 is relatively the best, and the effect of the functional yarn using stretch textured yarn is close to that of the functional yarn using fully drawn yarn.

[0088] Table 1: Far infrared performance results of each example

[0089]

[0090] The thermal retention rate of each fabric was determined according to GB / T11048-2018 “Determination of thermal and moisture resistance of textiles under steady-state conditions”, and the test results are shown in Table 2. The thermal retention rate of the manufactured composite fabric can all reach more than 80%, and the thermal retention and warmth retention performance is excellent. Compared with Example 1, Example 2 and Example 3, the thermal retention performance of the graphene component and the metal oxide black nano ceramic powder component in the moisture permeable polyurethane film is superior to that of the graphite carbon black component. Compared with Example 1, the thermal retention performance of the fabric microtonic weave and honeycomb weave structure in Example 4 is close. With the increase of the thickness of the moisture permeable functional polyurethane film and the increase of the content of the far infrared functional particles, the thermal retention performance is slightly improved. With the increase of the yarn fineness, the weight of the pile fabric woven by the same yarn increases, and the far infrared functional particles increase, so that the thermal retention rate of Example 6 is significantly increased compared with Example 2; the thermal retention rate of Example 8 is significantly improved compared with Example 7. The yarn structure form has a lower influence on the thermal retention performance, and the results of Example 7 and Example 3 are close.

[0091] Table 2: Thermal retention rate results of each example

[0092]

[0093] The moisture permeability of the composite fabric was tested according to GB / T12704.2 method B inverted cup method, and the results are shown in Table 3. The moisture permeability of the composite fabric is mainly provided by the moisture permeable film.

[0094] The fabric structures of Example 1, Example 2, Example 3 and Example 4 are similar, the thickness of the moisture permeable film is the same, and the moisture permeability is close. The thickness of the polyurethane moisture permeable film in Example 5 is thicker, and the moisture permeability is lower than that of other examples. In Example 6 and Example 8, the yarn fineness is thicker, and the fabric is thicker, which weakens the moisture permeability. The structure form of the yarn, whether it is a stretch deformed yarn or a fully drawn yarn, has a weak influence on the moisture permeability. The moisture permeability of each example can all reach more than 6000g / (m2·24h), and the performance is excellent, which can satisfy the timely transfer of sweat in outdoor activities and maintain the comfort of the human body.

[0095] Table 3: Moisture permeability results of each example

[0096]

[0097] Unless otherwise explicitly specified and limited, the terms “arrangement”, “installation”, “connection”, “connection” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0098] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A thermal and insulating composite fabric inspired by the structure of the skin of the polar bear, characterized in that, It is composed of a surface layer (1), a middle layer (2) and an inner layer (3), wherein: The surface layer (1) is a hollow structure and a polyester yarn fabric with far-infrared heating functional particles added; The middle layer (2) is a high-moisture-permeable polyurethane black film with far-infrared functional particles added; The inner layer (3) is a yellow knitted pile fabric made of hollow structure polyester yarn with far-infrared heating functional particles added; The surface layer (1), the middle layer (2) and the inner layer (3) are laminated together by a laminating composite process.

2. A process for the production of a thermal and cold weather protective composite fabric inspired by the structure of the skin of the polar bear as claimed in claim 1, characterized in that, It comprises the following steps: Step one: manufacturing of a hollow structure polyester yarn fabric with far-infrared heating functional particles added, specifically as follows: Select hollow polyester yarn with far-infrared functional particle content of 10%wt as warp and weft yarns, according to the designed fabric organization, through water jet loom to weave into a far-infrared functional fabric with uneven surface structure, after waterproof finishing process to process into a waterproof fabric, to obtain the surface layer (1), ready for use; Step two: manufacturing of a high-moisture-permeable polyurethane black film with far-infrared functional particles added, specifically as follows: During the dissolution of polyurethane resin in solvent, far-infrared functional particles are added and stirred together until completely uniform; then the mixed phase solution is uniformly coated on release paper by "roll coating method", the composite product is immersed in a mixed solution of water and N,N-dimethylformamide for solvent exchange to form a microporous structure, and then washed with water, dried by hot air and shaped to prepare a functional black film, to obtain the middle layer (2), ready for use; Step three: preparation of a hollow structure pile fabric with far-infrared heating functional particles added, specifically as follows: Hollow polyester yarns with 10%wt of far infrared functional particles are knitted into precursor knits suitable for processing polar fleece. After fabric conditioning, dyeing at 120°C to a color close to polar bear fat, dehydration, drying, splitting, napping, carding, shearing, shaking, heat setting at 180°C, a far infrared functional polar fleece with a weight of 180-250 g / m 2 is produced, i.e. the inner layer (3) is obtained, ready for use. Step four: far-infrared functional fabric, far-infrared functional heating black film and far-infrared functional heating pile fabric are laminated to obtain a "polar bear skin structure inspired thermal insulation and warmth composite fabric".

3. A process for the production of a thermal and cold weather protective composite fabric inspired by the structure of the polar bear skin as claimed in claim 2, wherein, In step one and step three, the far-infrared heating functional particles added are nano ceramic powder, specifically a composite nano ceramic particle composed of two or more of zirconium oxide, zirconium carbide, aluminum oxide, magnesium oxide, titanium dioxide, silicon dioxide and silicate ore powder.

4. The method for preparing a thermal insulation composite fabric inspired by the structure of a polar bear's skin, as described in claim 2, is characterized in that... In step one and step three, the hollow rate of the hollow structure polyester yarn is 30%.

5. The method for preparing a thermal insulation composite fabric inspired by the structure of a polar bear's skin, as described in claim 2, is characterized in that... In step two, the far-infrared functional particles are one of carbon black graphite, graphene and ceramic powder containing iron, manganese, cobalt and other dark metal oxides, making the color of the film black.

6. The method for preparing a thermal insulation composite fabric inspired by the structure of a polar bear's skin, as described in claim 2, is characterized in that... In step two, the added amount of far-infrared functional particles is 5%wt of the mass of polyurethane moisture-permeable film.

7. The method for preparing a thermal insulation composite fabric inspired by the structure of a polar bear's skin, as described in claim 2, is characterized in that... In step two, the thickness of the functional black film is one of 0.012mm, 0.015mm and 0.02mm specifications.

8. A process for the production of a thermal and cold weather protective composite fabric inspired by the structure of polar bear skin as claimed in claim 2, wherein, In step one, the fabric finishing process is fluorine-free waterproof finishing.

9. A process for the production of a thermal and cold weather protective composite fabric inspired by the structure of polar bear skin as claimed in claim 2, wherein, In step one and step three, the polyester yarn can be stretch textured yarn with specifications of 65D / 80F, 75D / 80F, 100D / 80F and 150D / 160F, or fully drawn yarn with specifications of 65D / 80F, 75D / 80F, 100D / 80F and 150D / 160F.

10. A process for the production of a thermal and cold weather protective composite fabric inspired by the structure of polar bear skin as claimed in claim 2, wherein, In step four, the laminating composite process mainly includes glue transfer coating, preliminary compounding, secondary compounding, curing and cooling steps, wherein: The glue in the glue transfer coating is water-based polyurethane glue, which is first coated on release paper and then transferred to the fabric; The preliminary compounding is to form a double-layer structure by pressing the fabric and the black film at 120 DEG C under the weight of a rubber roller; The secondary compounding is to coat the water-based polyurethane glue on the release paper and then transfer it to the surface of the black film; The double-layer structure formed by the fabric and the black film and the plush form a three-layer composite structure at 140 DEG C under the weight of a rubber roller.

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