Preparation method of sunscreen fiber

Abstract

The invention discloses a sunscreen fiber preparation method which comprises the following steps: S1, raw material preparation, S2, blending, S3, melting, S4, spinning, S5, collagen injection, S6, fiber post-treatment, S7, vacuum wet steaming, S8, dehydration and drying, S9, traction and oiling, and S10, inspection and warehousing. A small part of projected ultraviolet light is weakened by the collagen and then is in contact with the skin of a human body, so that a protection effect is effectively achieved, and the sun-proof effect of the fiber is good.

Description

Technical Field

[0001] The present invention relates to the technical field of textile fibers, in particular to the technical field of a preparation method of sunscreen fibers. Background Art

[0002] Ultraviolet rays are divided into short-wave ultraviolet rays UVC (200-290 nm), medium-wave ultraviolet rays UVB (290-320 nm), and long-wave ultraviolet rays UVA (320-400 nm). Among them, most UVC is absorbed by the ozone layer in the atmosphere and cannot reach the ground; UVB can pass through the atmosphere and irradiate objects and the human body surface, resulting in the aging of items, redness and peeling of the human body, and even causing diseases such as skin cancer in severe cases; UVA has strong penetration ability and can cause skin tanning, aging, and DNA damage. The conjugated structure composed of carbon atoms on graphene can exactly match the energy of ultraviolet rays, and thus has a strong absorption of the full-spectrum ultraviolet rays of 200-400 nm and can be converted into heat energy and released. Therefore, introducing graphene into the fiber matrix can make the composite fiber also have a significant ultraviolet shielding effect. The unique two-dimensional structure of graphene also makes it particularly effective in light shielding, and a very good ultraviolet shielding effect can be obtained with only a very small addition amount. Therefore, it is necessary to study a preparation method of sunscreen fibers introducing graphene masterbatch. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the prior art, and propose a preparation method of sunscreen fibers, which can utilize graphene to absorb and reflect most ultraviolet rays, and the small part of the projected ultraviolet rays are weakened by collagen and then contact the human skin, effectively playing a protective role, and the fiber has good sunscreen effect.

[0004] To achieve the above purpose, the present invention proposes a preparation method of sunscreen fibers, including the following steps: S1. Prepare raw materials, prepare cellulose fiber raw materials, graphene masterbatch, and collagen raw materials; S2. Blend, blend the cellulose fiber raw materials and the graphene masterbatch to obtain a blended material; S3. Melt, melt the blended material through a spinning screw extruder to form a spinning melt; S4. Spin, transfer the spinning melt to a spinning box for melt spinning of the blended material fiber nozzle; S5. Inject collagen, during the melt spinning of the blended material fiber nozzle, pressurize and extrude the collagen raw materials inside and on the surface of the blended material fiber through a branch side pipe connected to the side of the nozzle to obtain a mixed fiber; S6. Fiber post-treatment, sequentially pass the mixed fiber through ring blowing cooling, drawing and bending, and winding and forming to obtain a raw silk fiber; S7. Vacuum wet steaming: Place the raw fiber in a vacuum shaping cylinder for vacuum wet steaming to obtain damp-heat fiber. S8. Dehydration and drying: Use a centrifugal dehydrator to dehydrate the damp-heat fiber, and then use hot air drying to obtain dry fiber. S9. Drawing and oiling: After the dry fiber is post-spun and drawn into an oil bath tank, the dry fiber is oiled and wound to obtain sunscreen fiber. S10. Inspection and warehousing: Take samples of the sunscreen fiber, cut them off, and conduct inspections. After passing the inspections, they are wound and packaged for warehousing.

[0005] Preferably, in step S2, the graphene masterbatch is put into a vacuum drying tower for drying, the drying temperature is maintained at 100 - 110°C, the dried graphene masterbatch is ground into graphene masterbatch powder, and the graphene masterbatch powder and the cellulose fiber raw material are stirred and mixed together at high speed. During the stirring process, ultrasonic oscillation treatment is used for auxiliary mixing.

[0006] Preferably, in step S3, the temperature in the spinning screw extruder is 250 - 260°C, and the mass fraction of the graphene masterbatch in the spinning melt is 1.56 - 1.76%.

[0007] Preferably, in step S5, the collagen raw material is introduced into the branch side pipe through an outer side pressurizing metering pump, and the spinning melt is introduced into the nozzle through an inner side metering pump. The pressure of the outer side pressurizing metering pump is greater than that of the inner side metering pump, and the mass fraction ratio of the collagen raw material to the mixed fiber is 1:2 - 3.

[0008] Preferably, in step S6, the temperature of the annular air cooling is 22 - 24°C, the annular air cooling speed is 1.1 - 1.2 m / s, the annular air cooling humidity is 65 - 69%, the drawing ratio is 2.7 - 2.9 times; the crimping and forming speed is 3200 - 3400 m / min.

[0009] Preferably, in step S7, the temperature of the vacuum wet steaming process is 95 - 100°C, the heating rate is 3 - 4°C / min, the humidity is 80 - 85%, and it is taken out after heat preservation and wet steaming for 35 - 40 min to obtain damp-heat fiber.

[0010] Preferably, in step S8, the centrifugal dehydrator dehydrates the damp-heat fiber to a moisture content of 60% - 65%, the hot air temperature for hot air drying is 60 - 70°C, and the hot air drying time is 50 - 60 min.

[0011] The beneficial effects of the present invention: The present invention can utilize graphene to absorb and reflect most of the ultraviolet rays, and the small part of the projected ultraviolet rays are weakened by collagen and then contact the human skin, effectively playing a protective role, and the fiber has good sunscreen effect.

[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. Description of the Drawings

[0013] Figure 1 is a process flow chart of a preparation method of a sunscreen fiber of the present invention; Figure 2 is a schematic structural diagram of a collagen injection of a preparation method of a sunscreen fiber of the present invention.

[0014] In the figure: 1 - branch side pipe, 2 - nozzle, 3 - collagen raw material, 4 - mixed fiber. Detailed Embodiments

[0015] Embodiment 1 Refer to Figure 1 and Figure 2 A preparation method of a sunscreen fiber of the present invention includes the following steps: S1. Prepare raw materials, prepare cellulose fiber raw materials, graphene masterbatch and collagen raw materials; S2. Blend, blend the cellulose fiber raw materials and the graphene masterbatch to obtain a blended material; S3. Melt, melt the blended material and extrude it through a spinning screw extruder to form a spinning melt; S4. Spin, transfer the spinning melt to a spinning box for melt spinning of the mixed fiber nozzle; S5. Collagen injection, during the melt spinning of the mixed fiber nozzle, pressurize through the branch side pipe connected to the side of the nozzle to squeeze the collagen raw material into the inside and surface layer of the mixed fiber to obtain a mixed fiber; S6. Fiber post-treatment, sequentially pass the mixed fiber through ring blowing cooling, drawing and bending, and winding and forming to obtain a raw silk fiber; S7. Vacuum wet steaming, place the raw silk fiber in a vacuum shaping cylinder for vacuum wet steaming to obtain a wet and hot fiber; S8. Dehydration and drying, use a centrifugal dehydrator to dehydrate the wet and hot fiber, and then use hot air drying to obtain a dry fiber; S9. Traction and oiling, post-spin and draw the dry fiber into an oil bath tank, and oil and wind the dry fiber to obtain a sunscreen fiber; S10. Inspection and warehousing, sample and cut the sunscreen fiber for inspection, and after passing the inspection, package it in rolls and warehousing.

[0016] In step S3, the temperature in the spinning screw extruder is 250 - 260°C, the mass fraction of graphene masterbatch in the spinning melt is 1.56 - 1.76%. In step S5, the collagen raw material is introduced into the branch side pipe through an outer pressurized metering pump, and the spinning melt is introduced into the nozzle through an inner metering pump. The pressure of the outer pressurized metering pump is greater than that of the inner metering pump. The mass ratio of the collagen raw material to the mixed fiber is 1:2 - 3. In step S8, the centrifugal dehydrator dehydrates the wet and hot fiber to a moisture content of 60% - 65%, and the hot air temperature for hot air drying is 60 - 70°C, and the hot air drying time is 50 - 60 min.

[0017] Example Two Refer to Figure 1 and Figure 2 , a preparation method of a sunscreen fiber of the present invention includes the following steps: S1. Prepare raw materials, and prepare cellulose fiber raw materials, graphene masterbatch and collagen raw materials; S2. Blend, blend the cellulose fiber raw materials and the graphene masterbatch to obtain a blended material; S3. Melt, melt the blended material through a spinning screw extruder to form a spinning melt; S4. Spin, transfer the spinning melt to a spinning box for melt spinning of the mixed fiber nozzle; S5. Inject collagen, during the melt spinning of the mixed fiber nozzle, pressurize through a branch side pipe connected to the side of the nozzle to squeeze the collagen raw material inside and on the surface of the mixed fiber to obtain a mixed fiber; S6. Post-treatment of the fiber, sequentially pass the mixed fiber through ring blowing cooling, drawing and bending, and winding and forming to obtain a raw fiber; S7. Vacuum wet steaming, place the raw fiber in a vacuum shaping cylinder for vacuum wet steaming to obtain a wet and hot fiber; S8. Dehydration and drying, use a centrifugal dehydrator to dehydrate the wet and hot fiber, and then use hot air drying to obtain a dry fiber; S9. Traction and oiling, post-spin draw the dry fiber into an oil bath tank, and oil and wind the dry fiber to obtain a sunscreen fiber; S10. Inspection and warehousing, sample and cut the sunscreen fiber for inspection, and after passing the inspection, roll and package it for warehousing; In step S2, the graphene masterbatch is put into a vacuum drying tower for drying. The drying temperature is maintained at 100 - 110°C. The dried graphene masterbatch is ground into graphene masterbatch powder. The graphene masterbatch powder is mixed with the cellulose fiber raw material by high-speed stirring, and ultrasonic oscillation treatment is used for auxiliary mixing during the stirring process. In step S3, the temperature in the spinning screw extruder is 250 - 260°C, and the mass fraction of the graphene masterbatch in the spinning melt is 1.56 - 1.76%. In step S5, the collagen raw material is introduced into the branch side pipe through an outer pressurized metering pump, and the spinning melt is introduced into the nozzle through an inner metering pump. The pressure of the outer pressurized metering pump is greater than that of the inner metering pump. The mass ratio of the collagen raw material to the mixed fiber is 1:2 - 3. In step S6, the temperature of the ring blowing cooling is 22 - 24°C, the ring blowing cooling speed is 1.1 - 1.2 m / s, the ring blowing cooling humidity is 65 - 69%, the draw ratio is 2.7 - 2.9 times; the crimping and forming speed is 3200 - 3400 m / min.

[0018] Example 3 Refer to Figure 1 and Figure 2 , a preparation method of a sunscreen fiber of the present invention includes the following steps: S1. Prepare raw materials, prepare cellulose fiber raw materials, graphene masterbatch and collagen raw materials; S2. Blend, blend the cellulose fiber raw material and the graphene masterbatch to obtain a blended material; S3. Melt, melt the blended material through a spinning screw extruder to form a spinning melt; S4. Spin, transfer the spinning melt to a spinning box for melt spinning of the blended fiber through a nozzle; S5. Collagen injection, during the melt spinning of the blended fiber through the nozzle, the collagen raw material is extruded into the interior and surface layer of the blended fiber by pressurization through a branch side pipe connected to the side of the nozzle to obtain a mixed fiber; S6. Fiber post-treatment, subject the mixed fiber to ring blowing cooling, drawing and bending, and winding and forming in sequence to obtain a raw silk fiber; S7. Vacuum wet steaming, place the raw silk fiber in a vacuum shaping cylinder for vacuum wet steaming to obtain a wet and hot fiber; S8. Dehydration and drying, dehydrate the wet and hot fiber using a centrifugal dehydrator, and then dry it using hot air to obtain a dried fiber; S9. Traction and oiling, post-spin and draw the dried fiber into an oil bath tank, and oil and wind the dried fiber to obtain a sunscreen fiber; S10. Inspection and warehousing, sample and cut the sunscreen fiber for inspection, and after passing the inspection, package it in rolls and warehousing; In step S2, the graphene masterbatch is put into a vacuum drying tower for drying. The drying temperature is maintained at 100-110°C. The dried graphene masterbatch is ground into graphene masterbatch powder. The graphene masterbatch powder is mixed with the cellulose fiber raw material by high-speed stirring. During the stirring process, ultrasonic oscillation treatment is used for auxiliary mixing. In step S3, the temperature in the spinning screw extruder is 250-260°C. The mass fraction of the graphene masterbatch in the spinning melt is 1.56-1.76%. In step S5, the collagen raw material is introduced into the branch side tube through an outer pressurized metering pump, and the spinning melt is introduced into the nozzle through an inner metering pump. The pressure of the outer pressurized metering pump is greater than that of the inner metering pump. The mass fraction ratio of the collagen raw material to the mixed fiber is 1:2-3. In step S6, the temperature of the annular air cooling is 22-24°C, the annular air cooling speed is 1.1-1.2 m / s, the annular air cooling humidity is 65-69%, and the draft ratio is 2.7-2.9 times; the crimping and forming speed is 3200-3400 m / min. In step S7, the temperature of the vacuum wet steaming process is 95-100°C, the heating rate is 3-4°C / min, the humidity is 80-85%, and after keeping warm and wet steaming for 35-40 min, it is taken out to obtain the wet and hot fiber. In step S8, the centrifugal dehydrator dehydrates the wet and hot fiber to a moisture content of 60%-65%, and the hot air temperature for hot air drying is 60-70°C, and the hot air drying time is 50-60 min.

[0019] The present invention can utilize graphene to absorb and reflect most of the ultraviolet light. The small part of the projected ultraviolet light is weakened by collagen and then contacts the human skin, effectively playing a protective role, and the fiber has good sunscreen effect.

[0020] The above embodiments are illustrative of the present invention, not restrictive of the present invention. Any simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A method for preparing a sunscreen fiber, characterized in that: It includes the following steps: S1. Prepare raw materials, including cellulose fiber raw materials, graphene masterbatch, and collagen raw materials; S2. Blend, blend the cellulose fiber raw materials and the graphene masterbatch to obtain a blended material; S3. Melt, melt the blended material through a spinning screw extruder to form a spinning melt; S4. Spinning, transfer the spinning melt to a spinning box for melt spinning of the blended material through a fiber nozzle; S5. Collagen injection, during the melt spinning of the blended material through the fiber nozzle, inject the collagen raw material into the interior and surface layer of the blended material fiber under pressure through a branch side tube connected to the side of the nozzle to obtain a hybrid fiber; S6. Fiber post-treatment, subject the hybrid fiber to ring blowing cooling, drawing and bending, and winding forming in sequence to obtain a raw silk fiber; S7. Vacuum wet steaming, place the raw silk fiber in a vacuum shaping cylinder for vacuum wet steaming to obtain a moist and hot fiber; S8. Dehydration and drying, dehydrate the moist and hot fiber using a centrifugal dehydrator, and then dry it using hot air to obtain a dry fiber; S9. Drawing and oiling, post-spin and draw the dry fiber into an oil bath tank, and wind the dry fiber after oiling to obtain a sunscreen fiber; S10. Inspection and warehousing, sample and cut the sunscreen fiber for inspection, and after passing the inspection, package it into rolls and store it in the warehouse.

2. The preparation method of a sunscreen fiber according to claim 1, characterized in that: In step S2, the graphene masterbatch is put into a vacuum drying tower for drying, the drying temperature is maintained at 100 - 110 °C, the dried graphene masterbatch is ground into graphene masterbatch powder, and the graphene masterbatch powder is mixed with the cellulose fiber raw materials by high-speed stirring. During the stirring process, ultrasonic oscillation treatment is used for auxiliary mixing.

3. The preparation method of a sunscreen fiber as described in claim 1, characterized in that: In step S3, the temperature inside the spinning screw extruder is 250 - 260 °C, and the mass fraction of the graphene masterbatch in the spinning melt is 1.56 - 1.76%.

4. The preparation method of a sunscreen fiber according to claim 1, characterized in that: In step S5, the collagen raw material is introduced into the branch side tube through an external pressurized metering pump, and the spinning melt is introduced into the nozzle through an internal metering pump. The pressure of the external pressurized metering pump is greater than that of the internal metering pump, and the mass ratio of the collagen raw material to the blended material fiber is 1:2 - 3.

5. The preparation method of a sunscreen fiber according to claim 1, characterized in that: In step S6, the ring blowing cooling temperature is 22 - 24 °C, the ring blowing cooling speed is 1.1 - 1.2 m / s, the ring blowing cooling humidity is 65 - 69%, the drawing ratio is 2.7 - 2.9 times; the curling forming speed is 3200 - 3400 m / min.

6. The preparation method of a sunscreen fiber as described in claim 1, characterized in that: In step S7, the temperature of the vacuum wet steaming process is 95 - 100 °C, the heating rate is 3 - 4 °C / min, the humidity is 80 - 85%, and after heat preservation and wet steaming for 35 - 40 min, it is taken out to obtain a moist and hot fiber.

7. The preparation method of a sunscreen fiber as described in claim 1, wherein: In step S8, the centrifugal dehydrator dehydrates the moist and hot fiber to a moisture content of 60% - 65%, the hot air temperature for hot air drying is 60 - 70 °C, and the hot air drying time is 50 - 60 min.

Images