High-emissivity durable far infrared functional fabric and preparation method thereof

Abstract

The invention discloses a high-emissivity durable far-infrared functional fabric and a preparation method thereof. The high-emissivity durable far-infrared functional fabric is prepared from the following components in percentage by mass: 60-85% of bio-based polyester fibers, 10-30% of modified far-infrared ceramic composite powder and 5-15% of graphene grafted cellulose fibers, wherein the modified far-infrared ceramic composite powder comprises zirconium oxide, silicon carbide and tourmaline ternary core-shell structure particles, and the surface of the modified far-infrared ceramic composite powder is modified by a silane coupling agent KH560. The zirconium oxide / silicon carbide / tourmaline ternary core-shell structure ceramic powder is innovatively designed, the synergistic interaction of the bio-based polyester and the graphene fibers is combined, and the low-temperature plasma activation technology is adopted, so that the far infrared emissivity of the fabric at the wave band of 8-14 microns reaches 0.92 or above, and the performance retention rate is larger than 90% after the fabric is washed for 50 times. The far infrared emissivity of the fabric can be improved, and the function durability can be prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of textile manufacturing, and particularly relates to a high-emissivity long-lasting far-infrared functional fabric and a preparation method thereof. BACKGROUND

[0002] With the pursuit of health and comfortable life, far-infrared functional fabrics have gradually attracted widespread attention due to their unique health-care performance. Far-infrared functional fabrics can emit far-infrared rays, which can promote blood circulation in the human body, relieve muscle fatigue, improve sleep quality, and have significant physiological and psychological health-care effects. However, existing far-infrared functional fabrics still have some deficiencies in emissivity and durability, especially after long-term use, the attenuation of far-infrared function is more obvious, which affects the actual application effect and user experience of the product.

[0003] Existing far-infrared functional fabrics mainly achieve far-infrared emission function by adding far-infrared ceramic powder. However, due to the poor dispersibility and fixity of ceramic powder, the far-infrared emissivity of the fabric significantly decreases after multiple washing and use. In addition, the traditional preparation process is complex and the production cost is high, which is difficult to meet the market demand for efficient and long-lasting far-infrared functional fabrics. SUMMARY

[0004] The application provides a high-emissivity long-lasting far-infrared functional fabric and a preparation method thereof to solve the technical problem of complex traditional preparation process and high production cost.

[0005] To solve the above technical problems, one technical solution adopted by the application is: a high-emissivity long-lasting far-infrared functional fabric, which is composed of the following components by mass percentage: biobased polyester fiber 60% to 85%, modified far-infrared ceramic composite powder 10% to 30%, and graphene grafted cellulose fiber 5% to 15%; wherein the modified far-infrared ceramic composite powder includes zirconium oxide, silicon carbide, and three-element core-shell structure particles of tourmaline, and the surface of the modified far-infrared ceramic composite powder is modified by silane coupling agent KH560.

[0006] Further, the particle size of the three-element core-shell structure particles of tourmaline is 50-200 nm.

[0007] Further, the biobased polyester fiber is polylactic acid modified PET extracted from corn straw, the crystallinity is controlled at 35% to 45%, and the single filament fineness is 0.8-1.2D.

[0008] Further, the graphene loading in the graphene grafted cellulose fiber is 3-8wt%, and the specific surface area of the fiber is >20m 2 / g.

[0009] Another technical solution adopted by the application is: a preparation method of a high-emissivity persistent far-infrared functional fabric, comprising the following steps:

[0010] S1. Composite spinning solution preparation: blend the modified far-infrared ceramic powder and the bio-based polyester chip, extrude at 245-255 DEG C by using a double-screw melt spinning machine, and draw at a draw ratio of 3.5:1 to obtain far-infrared functional fibers;

[0011] S2. Blended weaving: blend the far-infrared functional fibers and the graphene grafted cellulose fibers according to a proportion, weave by using a double jacquard machine, and obtain a blended fabric with a surface density of 120-150 g / m 2

[0012] S3. Plasma activation treatment: treat the surface of the blended fabric by using dielectric barrier discharge plasma in an argon-oxygen mixed atmosphere for 30-60 seconds to obtain a high-emissivity persistent far-infrared functional fabric.

[0013] Further, the volume ratio of argon to oxygen is 9:1.

[0014] Further, the power density of the plasma treatment is 50 W / cm 2 .

[0015] Further, the plasma treatment in step S3 forms nanoscale pits on the surface of the fibers in the blended fabric, and the depth of the nanoscale pits is 50-150 nm.

[0016] The application has the following beneficial effects: the application realizes the synergistic excitation of photothermal conversion and mechanical energy-thermal energy by constructing a ternary structure of "inorganic ceramic core-semiconductor intermediate layer-piezoelectric shell"; the application forms a permanent surface modification layer on the fiber body by plasma treatment, avoiding the easy peeling problem of traditional coatings; and the bio-based material accounts for ≥60%, and the production energy consumption is reduced by 40%. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the application more clear, the following will further describe the application in detail by combining with specific embodiments.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the application, but the application can also be implemented in other ways different from the description, therefore, the application is not limited to the specific embodiments disclosed in the following description.

[0019] ​The application discloses a high-emissivity persistent far-infrared functional fabric, which is composed of the following components in percentage by mass: bio-based polyester fiber 60-85%, modified far-infrared ceramic composite powder 10-30%, and graphene grafted cellulose fiber 5-15%; wherein the modified far-infrared ceramic composite powder comprises zirconium oxide, silicon carbide and three-element core-shell structure particles of tourmaline, and the surface of the modified far-infrared ceramic composite powder is modified by silane coupling agent KH560.

[0020] The particle size of the three-element core-shell structure particles of tourmaline is 50-200 nm. The bio-based polyester fiber is polylactic acid modified PET extracted from corn straw, the crystallinity is controlled to be 35-45%, and the single filament fineness is 0.8-1.2D. The graphene loading in the graphene grafted cellulose fiber is 3-8 wt%, and the specific surface area of the fiber is >20 m 2 / g.

[0021] The application discloses a preparation method of the high-emissivity persistent far-infrared functional fabric.

[0022] S1. Composite spinning solution preparation: the modified far-infrared ceramic powder is blended with bio-based polyester chips, extruded at 245-255 DEG C by using a double-screw melt spinning machine, and drawn at a draw ratio of 3.5:1 to obtain far-infrared functional fibers;

[0023] S2. Blended spinning and weaving: the far-infrared functional fibers are blended with graphene grafted cellulose fibers at a certain proportion, and woven by using a double jacquard machine, so that a blended fabric is obtained. 2

[0024] S3. Plasma activation treatment: the surface of the blended fabric is treated by using dielectric barrier discharge plasma under a mixed atmosphere of argon and oxygen for 30-60 seconds, so that a high-emissivity persistent far-infrared functional fabric is obtained.

[0025] The volume ratio of argon to oxygen is 9:1, and the power density of the plasma treatment is 50 W / cm 2 .The step S3 of plasma treatment forms nanoscale pits on the surface of the fibers in the blended fabric, and the depth of the nanoscale pits is 50-150 nm.

[0026] Example 1

[0027] The percentage by mass of the bio-based polyester fiber, the modified far-infrared ceramic composite powder and the graphene grafted cellulose fiber is 70%, 20% and 10% respectively. The crystallinity of the bio-based polyester fiber is controlled to be 40%, and the single filament fineness is 1.0D. The graphene loading in the graphene grafted cellulose fiber is 5 wt%, and the specific surface area of the fiber is 25 m 2 / g.

[0028] In the preparation process of the composite spinning solution, the modified far-infrared ceramic powder and the bio-based polyester chip are uniformly mixed in proportion, then added into a double screw melt spinning machine, melt extruded at 250°C, and drawn at a ratio of 3.5:1 to obtain the far-infrared functional fiber.

[0029] The far-infrared functional fiber and the graphene grafted cellulose fiber are blended in proportion, and woven by a double jacquard machine with a surface density of 130 g / m 2 .

[0030] In the plasma activation treatment process, the fabric is placed in a plasma treatment device, treated by dielectric barrier discharge plasma under an argon / oxygen mixed atmosphere (volume ratio 9:1) with a power density of 50 W / cm 2 , and a treatment time of 45 seconds. After treatment, nanoscale pits with a depth of about 100 nm are formed on the fiber surface, and a high-emissivity long-lasting far-infrared functional fabric is obtained.

[0031] Example 2

[0032] The mass percentages of the bio-based polyester fiber, the modified far-infrared ceramic composite powder and the graphene grafted cellulose fiber are 65%, 20% and 15% respectively. The crystallinity of the bio-based polyester fiber is controlled at 40%, and the single fiber fineness is 1.0D. The graphene loading in the graphene grafted cellulose fiber is 5wt%, and the specific surface area of the fiber is 25m 2 / g.

[0033] In the preparation process of the composite spinning solution, the modified far-infrared ceramic powder and the bio-based polyester chip are uniformly mixed in proportion, then added into a double screw melt spinning machine, melt extruded at 250°C, and drawn at a ratio of 3.5:1 to obtain the far-infrared functional fiber.

[0034] The far-infrared functional fiber and the graphene grafted cellulose fiber are blended in proportion, and woven by a double jacquard machine with a surface density of 140 g / m 2 .

[0035] In the plasma activation treatment process, the fabric is placed in a plasma treatment device, treated by dielectric barrier discharge plasma under an argon / oxygen mixed atmosphere (volume ratio 9:1) with a power density of 50 W / cm 2 , and a treatment time of 45 seconds. After treatment, nanoscale pits with a depth of about 100 nm are formed on the fiber surface, and a high-emissivity long-lasting far-infrared functional fabric is obtained.

[0036] Example 3

[0037] The mass percentages of the bio-based polyester fiber, modified far-infrared ceramic composite powder, and graphene grafted cellulose fiber are 60%, 30%, and 10%, respectively. The crystallinity of the bio-based polyester fiber is controlled at 45%, and the single-fiber fineness is 0.8D. The graphene loading in the graphene grafted cellulose fiber is 6wt%, and the specific surface area of the fiber is 30m 2 / g.

[0038] In the preparation process of the composite spinning solution, the modified far-infrared ceramic powder and bio-based polyester chips are uniformly mixed in proportion, then added to a double-screw melt spinning machine, and melt extruded at 255℃, with a draw ratio of 3.5:1, to obtain far-infrared functional fibers.

[0039] The far-infrared functional fibers and graphene grafted cellulose fibers are blended in proportion, and woven using a double jacquard machine, with a surface density of 150g / m 2 .

[0040] In the plasma activation treatment process, the fabric is placed in a plasma treatment device, treated using a dielectric barrier discharge plasma under an argon / oxygen mixed atmosphere (volume ratio 9:1), with a power density of 50W / cm 2 , and a treatment time of 60 seconds. After treatment, nanoscale pits with a depth of about 150nm are formed on the fiber surface, obtaining a high-emissivity long-lasting far-infrared functional fabric.

[0041] Comparative Example 1

[0042] The comparative example 1 does not perform far-infrared ceramic powder modification, wherein the mass percentages of the bio-based polyester fiber, far-infrared ceramic powder, and graphene grafted cellulose fiber are 70%, 20%, and 10%, respectively. The crystallinity of the bio-based polyester fiber is controlled at 40%, and the single-fiber fineness is 1.0D. The graphene loading in the graphene grafted cellulose fiber is 5wt%, and the specific surface area of the fiber is 25m 2 / g.

[0043] In the preparation process of the composite spinning solution, the modified far-infrared ceramic powder and bio-based polyester chips are uniformly mixed in proportion, then added to a double-screw melt spinning machine, and melt extruded at 250℃, with a draw ratio of 3.5:1, to obtain far-infrared functional fibers.

[0044] The far-infrared functional fibers and graphene grafted cellulose fibers are blended in proportion, and woven using a double jacquard machine, with a surface density of 130g / m 2 .

[0045] In the plasma activation treatment process, the fabric is placed in a plasma treatment device, treated using a dielectric barrier discharge plasma under an argon / oxygen mixed atmosphere (volume ratio 9:1), with a power density of 50W / cm 2, the processing time is 45 seconds. After processing, the fiber surface forms nanoscale pits with a depth of about 100 nm, obtaining far infrared functional fabric.

[0046] Comparative Example 2

[0047] The comparative example 2 does not perform plasma treatment. Among them, the mass percentage of bio-based polyester fiber, modified far infrared ceramic composite powder and graphene grafted cellulose fiber is 70%, 20% and 10% respectively. The crystallinity of bio-based polyester fiber is controlled at 40%, and the single fiber fineness is 1.0D. The graphene loading in graphene grafted cellulose fiber is 5wt%, and the specific surface area of the fiber is 25m2 / g.

[0048] In the preparation process of the composite spinning solution, the modified far infrared ceramic powder and the bio-based polyester chip are uniformly mixed in proportion, then added into the double screw melt spinning machine, melt extruded at 250℃, and the draw ratio is 3.5:1, to obtain far infrared functional fiber.

[0049] The far infrared functional fiber and the graphene grafted cellulose fiber are blended in proportion, and woven by double jacquard machine, with a face density of 130g / m 2 , obtaining far infrared functional fabric.

[0050] The far infrared emissivity of the fabric is tested by the determination standard of “GB / T 30127-2013 Textiles-Determination and Evaluation of Far Infrared Properties”, and the results are shown in Table 1.

[0051] Table 1 is the comparison of far infrared emissivity test of examples and comparative examples

[0052]

[0053] As shown in Table 1, the far infrared emissivity of the fabric prepared in Examples 1-3 in the 8-14μm wave band reaches 0.92 or more, and the performance retention rate is >90% after 50 times of washing, having high and durable far infrared function. Comparative Example 1 does not perform far infrared ceramic powder modification treatment, which makes the dispersibility and fixity of the ceramic powder poor, resulting in significant decrease of the initial emissivity and the emissivity after multiple washings of the fabric. Comparative Example 2 does not use plasma treatment process, which makes the far infrared ceramic composite powder easy to fall off during use, especially after multiple washings, resulting in significant decrease of the far infrared emissivity of the fabric.

[0054] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A high emissivity persistent far infrared functional fabric, characterized by, The bio-based polyester fiber is 60-85%, the modified far-infrared ceramic composite powder is 10-30%, and the graphene grafted cellulose fiber is 5-15%; wherein the modified far-infrared ceramic composite powder comprises zirconium oxide, silicon carbide and tourmaline ternary core-shell structure particles, and the surface of the modified far-infrared ceramic composite powder is modified by silane coupling agent KH560.

2. The high-emissivity, long-lasting, far-infrared functional fabric according to claim 1, wherein The particle size of the tourmaline ternary core-shell structure particles is 50-200 nm.

3. The high-emissivity, long-lasting, far-infrared functional fabric according to claim 1, wherein The bio-based polyester fiber is polylactic acid modified PET extracted from corn straw, the crystallinity is controlled at 35-45%, and the single filament fineness is 0.8-1.2D.

4. The high-emissivity, long-lasting, far-infrared functional fabric according to claim 1, wherein The graphene loading in the graphene grafted cellulose fiber is 3-8 wt%, the fiber specific surface area is >20 m 2 / g.

5. A method for preparing a high emissivity persistent far infrared functional fabric, characterized by, It comprises: S1. Preparation of composite spinning solution: blending the modified far-infrared ceramic powder with bio-based polyester chips, extruding at 245-255℃ by using a double screw melt spinning machine, and drawing at a ratio of 3.5:1 to obtain far-infrared functional fiber; S2. Blended weaving: the far infrared functional fiber is blended with the graphene grafted cellulose fiber in proportion, a double jacquard machine is used for weaving, and the face density is 120-150 g / m 2 , to obtain a blended fabric; S3. Plasma activation treatment: treating the surface of the blended fabric for 30-60 seconds under an argon-oxygen mixed atmosphere by using dielectric barrier discharge plasma to obtain the high-emissivity long-lasting far-infrared functional fabric.

6. The method of claim 5, wherein, The volume ratio of the argon to the oxygen is 9:

1.

7. The method of claim 5, wherein, The power density of the electrical plasma treatment is 50 W / cm 2 .

8. The method of claim 5, wherein, The plasma treatment in step S3 forms nanoscale pits on the surface of the fibers in the blended fabric, and the depth of the nanoscale pits is 50-150 nm.

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