A method for manufacturing a regenerated fiber antibacterial fabric

Abstract

The application provides a manufacturing method of regenerated fiber antibacterial fabric. The manufacturing method of the regenerated fiber antibacterial fabric comprises the following steps: surface modification of copper powder, mixing of waste polyester and modified copper powder, melting of the mixed material, preparation of modified polyurethane fiber by using organic silicon, and textile of the mixed fiber. The modified regenerated fiber is mixed with cotton fiber and modified polyurethane fiber respectively, and then spinning is carried out according to a specific yarn feeding mode, so that the prepared fabric has strong antibacterial property and heat resistance, and the fabric still has strong antibacterial property after multiple washing, achieves long-acting antibacterial effect, and reduces resource waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile fabrics, in particular to a production method of regenerated fiber antibacterial fabric. BACKGROUND

[0002] Polyester is also called polyester fiber, which has many excellent textile properties. It has good performance to various chemicals, and the damage degree of acid and alkali is not large, so it is difficult to degrade in nature and easy to pollute. The waste polyester can be processed into regenerated fiber antibacterial fabric. The existing antibacterial fabric usually soaks the fabric directly in the antibacterial agent. The antibacterial performance of the antibacterial fabric prepared in this way degrades after multiple washing, resulting in that the antibacterial fabric is not long in use, thereby causing resource waste.

[0003] The above content is only used to assist understanding of the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a production method of regenerated fiber antibacterial fabric.

[0005] A production method of regenerated fiber antibacterial fabric, comprising the following steps:

[0006] S1: surface modification of copper powder

[0007] Under the protection of nitrogen, copper powder, ethanol solution and glacial acetic acid are mixed, and then a modifier is added for reaction. After the reaction is completed, the modified copper powder is obtained by washing and drying.

[0008] S2: mixing waste polyester with modified copper powder

[0009] The waste polyester is ground into powder, and then uniformly mixed with the modified copper powder. Then, a lubricant and an antioxidant are added, and the mixture is uniformly mixed to obtain a mixed material.

[0010] S3: melting the mixed material

[0011] The mixed material is added to a screw spinning machine. The mixed material is melted into a melt in the melting zone of the screw spinning machine. Then, the melt is pressed into a metering pump by a pressure pump, and then extruded from a spinneret. Then, the filamentous melt is rapidly cooled and solidified by a refrigeration device to form a filament, thereby obtaining a modified regenerated fiber.

[0012] S4: preparing modified polyurethane fiber with silicone

[0013] The silicone is mixed with epoxy acrylate, and then toluene diisocyanate and aminopropyl trimethylsilane are added for reaction. After natural cooling, an antioxidant and an ultraviolet absorber are added, and then spinning is performed to obtain a modified polyurethane fiber.

[0014] S5: Spinning the fiber blend

[0015] The cotton fibers are heat treated in a water bath, and the modified regenerated fibers are blended with the cotton fibers heat treated in a water bath and the modified polyurethane fibers, and finally, the regenerated fiber antibacterial fabric is obtained through spinning.

[0016] Further, the surface modification of the copper powder in step S1 specifically includes the following steps:

[0017] S1.1: Put the copper powder, ethanol solution and glacial acetic acid into the reactor, and raise the temperature inside the reactor to 90-95°C at a rate of 5-10°C / min;

[0018] S1.2: Introduce nitrogen into the reactor until the nitrogen concentration detected by the detector inside the reactor is 98-100%;

[0019] S1.3: Load the modifier into the hydraulic pump of the stirring device, start the stirring device for stirring, and at the same time, the hydraulic pump press the modifier into the reactor, react for 5-10h, wash and dry to obtain the modified copper powder.

[0020] Further, the mixing of the waste polyester and the modified copper powder in step S2 specifically includes the following steps:

[0021] S2.1: Crush the waste polyester, and then put it into a grinding machine to grind into powder at a rate of 1500-2000r / min to obtain a precursor powder;

[0022] S2.2: Put the precursor powder and the modified copper powder into a mixer together, and mix at a rate of 1200-1500r / min for 10-15min;

[0023] S2.3: Add lubricant and antioxidant to the mixer, and mix at a rate of 500-700r / min for 30-40min to obtain a mixture.

[0024] Further, the preparation of the modified polyurethane fiber with silicone in step S4 specifically includes the following steps:

[0025] S4.1: Put the silicone and epoxy acrylate together into a stirrer at a molar ratio of 1-2:1, and react under the protection of nitrogen for 1-2h;

[0026] S4.2: Add toluene diisocyanate to the stirrer, adjust the temperature in the stirrer to 50-55°C, and incubate for 2-5h;

[0027] S4.3: Add aminopropyltrimethoxysilane to the stirrer, and cool naturally while stirring to obtain a precursor.

[0028] S4.4: The antioxidant and ultraviolet absorber are added to the precursor, and stirring and mixing are performed, and then spinning is performed to obtain the modified polyurethane fiber.

[0029] Further, the step S5 of mixing the fibers and then spinning specifically comprises the following steps:

[0030] S5.1: The cotton fiber is placed in a water bath, an antistatic agent is added, and water bath heat treatment is performed, and then drying is performed;

[0031] S5.2: The dried cotton fiber is subjected to opening, scutching and carding, and then is combined with the modified regenerated fiber to perform drawing, spinning and winding to obtain the blended yarn A;

[0032] S5.3: The modified regenerated fiber is combined with the modified polyurethane fiber to perform drawing, spinning and winding to obtain the blended yarn B;

[0033] S5.4: The blended yarn B is fed in the first, second and third paths, and the blended yarn A is fed in the fourth path by using a spinning machine to perform spinning in the yarn feeding mode to obtain the regenerated fiber antibacterial fabric.

[0034] Further, the reactor in the step S1.1 is provided with an oil storage tank, the conductive oil in the oil storage tank is heated by the waste heat in the reactor, and then the heated conductive oil is fed into the water bath in the step S5.1 to heat the water in the water bath to perform water bath heat treatment on the cotton fiber.

[0035] Further, the modifier is KH550 or TC-201.

[0036] Further, the organosilicon is vinyltrimethylsilane.

[0037] Compared with the prior art, the application has the advantages and beneficial effects that:

[0038] 1. The modified regenerated fiber is mixed with the cotton fiber and the modified polyurethane fiber respectively, and then is spun according to a specific yarn feeding mode to obtain the fabric, which has strong antibacterial property and heat resistance, and still has strong antibacterial property after multiple washing, thereby achieving long-acting antibacterial effect and reducing resource waste.

[0039] 2. The copper powder is modified, and then is mixed with waste polyester to be melted to form the modified regenerated fiber, and the modified regenerated fiber has super strong antibacterial property.

[0040] 3. The organosilicon is used to prepare the modified polyurethane fiber, which can enhance the heat resistance of the polyurethane fiber, thereby prolonging the service life of the prepared regenerated fiber antibacterial fabric. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 Flow chart of the method for manufacturing the regenerated fiber antibacterial fabric. DETAILED DESCRIPTION

[0042] The application will be further described in detail below with reference to specific examples.

[0043] Example 1

[0044] A method for manufacturing a regenerated fiber antibacterial fabric, as shown in the figure, comprises the following steps: Figure 1

[0045] S1: Surface modification of copper powder

[0046] The copper powder, ethanol solution and glacial acetic acid are added into a reactor, the inside of the reactor is heated to 90℃ at a rate of 5℃ / min, nitrogen is introduced into the reactor until the detector in the reactor detects that the concentration of nitrogen is 98%, then KH550 is loaded on the hydraulic pump of the stirring device, the stirring device is started to stir, at the same time, the hydraulic pump pressurizes KH550 into the reactor, and the reaction is carried out for 5h, then washing and drying are carried out to obtain modified copper powder;

[0047] S2: Mixing of waste polyester and modified copper powder

[0048] The waste polyester is crushed and then put into a grinding machine to be ground into powder at a rate of 1500r / min to obtain precursor powder, then the precursor powder and the modified copper powder are added into a mixer to be mixed at a rate of 1200r / min for 10min, then lubricant and antioxidant are added into the mixer to be mixed at a rate of 500r / min for 30min to obtain mixed material;

[0049] S3: Melting of the mixed material

[0050] The mixed material is added into a screw spinning machine, the mixed material is melted into a melt in the melting zone of the screw spinning machine, then the melt is pressurized into a metering pump through a pressure pump, and then extruded from a spinneret, then the filamentous melt is rapidly cooled and solidified through a refrigeration device to form a filament, thereby obtaining modified regenerated fiber, the copper powder is modified, then mixed with waste polyester to be melted, and then spun into modified regenerated fiber, the modified regenerated fiber has super strong antibacterial performance;

[0051] S4: Preparation of modified polyurethane fiber with organic silicon

[0052] ​Vinyl trimethylsilane produced by Hubei Dongcao Chemical Technology Co., Ltd. and epoxy acrylate produced by Shanghai Guangyi Chemical Co., Ltd. are added into a stirring machine at a molar ratio of 1:1, stirred for 1 h under the protection of nitrogen, and then toluene diisocyanate produced by Xiamen Xiangde Cishang Chemical Co., Ltd. is added into the stirring machine, the temperature in the stirring machine is adjusted to 50℃, and the reaction is kept for 2 h, after the reaction is completed, aminopropyl trimethoxysilane produced by Changsha Zhongyi Chemical Co., Ltd. is added into the stirring machine, and the stirring machine is naturally cooled while stirring, to obtain a precursor, then an antioxidant and a ultraviolet absorber are added into the precursor, stirred and mixed, and then spinning is performed, to obtain a modified polyurethane fiber, and the use of the organic silicon to prepare the modified polyurethane fiber can enhance the heat resistance of the polyurethane fiber, so as to prolong the service life of the regenerated fiber antibacterial fabric prepared;

[0053] S5: blending the fibers and then spinning

[0054] The cotton fibers are placed in a water bath, an antistatic agent is added, and water bath heat treatment is performed, then drying is performed, then the dried cotton fibers are opened, scutched and carded, and are combined with the modified regenerated fibers through drawing, spinning and winding, to obtain blended yarn A, at the same time, the modified regenerated fibers are combined with the modified polyurethane fibers through drawing, spinning and winding, to obtain blended yarn B, finally, the blended yarn B is fed through the first, second and third paths of a spinning machine, and the blended yarn A is fed through the fourth path of the spinning machine, in a yarn feeding mode, to spin, to obtain the regenerated fiber antibacterial fabric, and the modified regenerated fibers are blended with the cotton fibers and the modified polyurethane fibers respectively, and then are spun in a specific yarn feeding mode, so that the prepared fabric has strong antibacterial property and heat resistance, and the fabric still has strong antibacterial property after multiple washing, to achieve long-acting antibacterial effect and reduce resource waste.

[0055] Example 2

[0056] A method for manufacturing a regenerated fiber antibacterial fabric, as shown in Figure 1 , comprises the following steps:

[0057] S1: surface modification of copper powder

[0058] The copper powder, ethanol solution and glacial acetic acid are added into a reactor, the inside of the reactor is heated to 95℃ at a rate of 10℃ / min, nitrogen is introduced into the reactor until the concentration of nitrogen detected by a detector in the reactor is 99%, then the TC-201 is loaded on a hydraulic pump of a stirring device, the stirring device is started to stir, and the hydraulic pump press the TC-201 into the reactor, the reaction is kept for 5 h, and then washing and drying are performed, to obtain modified copper powder;

[0059] S2: mixing the waste polyester and the modified copper powder

[0060] The waste polyester is crushed, and then is put into a grinder to be ground into powder at a speed of 2000 r / min to obtain a precursor powder, then the precursor powder and the modified copper powder are added into a mixer to be mixed at a speed of 1500 r / min for 10 min, then lubricant and antioxidant are added into the mixer to be mixed at a speed of 700 r / min for 30 min, to obtain a mixed material;

[0061] S3: melting the mixed material

[0062] The mixed material is added into a screw spinning machine, the mixed material is melted into a melt in a melting zone of the screw spinning machine, then the melt is pressed into a metering pump through a pressure pump, and then is extruded from a spinneret, and then the filamentous melt is rapidly cooled and solidified through a refrigeration device to form a filament, to obtain modified regenerated fibers, by modifying the copper powder and mixing with the waste polyester, the modified regenerated fibers are spun, the modified regenerated fibers have super strong antibacterial performance;

[0063] S4: preparing modified polyurethane fibers with silicone

[0064] Vinyl trimethylsilane produced by Hubei Dongcao Chemical Technology Co., Ltd. and epoxy acrylate produced by Shanghai Guangyi Chemical Co., Ltd. are added into a stirrer in a molar ratio of 2:1, and are stirred for 1 h under the protection of nitrogen for reaction, then toluene diisocyanate produced by Xiamen Xiangde Cishang Chemical Co., Ltd. is added into the stirrer, the temperature in the stirrer is adjusted to 55℃, and is kept for reaction for 2 h, after the reaction is completed, aminopropyl trimethoxysilane produced by Changsha Zhongyi Chemical Co., Ltd. is added into the stirrer, and is naturally cooled while stirring, to obtain a precursor, then antioxidant and ultraviolet absorber are added into the precursor, and are stirred and mixed, and then are spun to obtain modified polyurethane fibers, by using silicone to prepare modified polyurethane fibers, the heat resistance of the polyurethane fibers can be enhanced, so that the service life of the prepared regenerated fiber antibacterial fabric is prolonged;

[0065] S5: blending fibers and then spinning

[0066] Cotton fibers are placed in a water bath, an antistatic agent is added, and the mixture is subjected to water bath heat treatment, followed by drying. The dried cotton fibers are then opened, cleaned, and carded, and then combined with the modified regenerated fibers through drawing, spinning, and winding to obtain blended yarn A. Simultaneously, the modified regenerated fibers are combined with the modified polyurethane fibers through drawing, spinning, and winding to obtain blended yarn B. Finally, the blended yarn B is spun on a spinning machine using a yarn-threading method where the first, second, and third threads are threaded through blended yarn B, and the fourth thread is threaded through blended yarn A, to obtain the regenerated fiber antibacterial fabric. By blending the modified regenerated fibers with cotton fibers and modified polyurethane fibers respectively, and then spinning them according to a specific yarn-threading method, the resulting fabric has strong antibacterial and heat-resistant properties. Moreover, the fabric retains strong antibacterial properties even after multiple washes, achieving a long-lasting antibacterial effect and reducing resource waste.

[0067] Example 3

[0068] A method for producing a regenerated fiber antibacterial fabric, such as Figure 1 As shown, it includes the following steps:

[0069] S1: Surface modification of copper powder

[0070] Copper powder, ethanol solution and glacial acetic acid were added to the reactor together. The internal temperature of the reactor was raised to 90°C at a rate of 5°C / min. Nitrogen gas was then introduced into the reactor until the detector inside the reactor detected a nitrogen concentration of 100%. KH550 was then loaded onto the hydraulic pump of the stirring device and the stirring device was started. At the same time, the hydraulic pump pressed KH550 into the reactor. The reaction was carried out for 10 hours. After washing and drying, modified copper powder was obtained.

[0071] S2: Mix waste polyester with modified copper powder

[0072] Waste polyester is crushed and then put into a grinder and ground into powder at a rate of 1500 r / min to obtain precursor powder. Then, the precursor powder and the modified copper powder are added to a mixer and mixed at a rate of 1200 r / min for 15 min. Lubricant and antioxidant are then added to the mixer and mixed at a rate of 500 r / min for 40 min to obtain a mixture.

[0073] S3: Molten mixture

[0074] The above mixture is added to a screw spinning machine, where it melts into a molten material in the melting zone. The molten material is then forced into a metering pump by a pressure pump and extruded from the spinneret. The filamentous molten material is then rapidly cooled and solidified by a refrigeration device to form filaments, thus obtaining modified recycled fibers. By modifying copper powder and then mixing and melting it with waste polyester, modified recycled fibers are spun into these fibers. These modified recycled fibers have superior antibacterial properties.

[0075] S4: preparing modified polyurethane fiber by using organosilicon

[0076] Vinyl trimethylsilane produced by Hubei Dongcao Chemical Technology Co., Ltd. and epoxy acrylate produced by Shanghai Guangyi Chemical Co., Ltd. are added into a stirrer in a molar ratio of 1:1, stirred for 2 h under the protection of nitrogen, and then toluene diisocyanate produced by Xiamen Xiangde Cishang Chemical Co., Ltd. is added into the stirrer, the temperature in the stirrer is adjusted to 50 DEG C, and the reaction is kept for 5 h. After the reaction is completed, aminopropyl trimethoxysilane produced by Changsha Zhongyi Chemical Co., Ltd. is added into the stirrer, and the stirrer is cooled naturally while stirring. A precursor is obtained. Then an antioxidant and an ultraviolet absorber are added into the precursor, stirred and mixed, and then spinning is performed to obtain a modified polyurethane fiber. The modified polyurethane fiber is prepared by using organosilicon, which can enhance the heat resistance of the polyurethane fiber, thereby prolonging the service life of the regenerated fiber antibacterial fabric prepared.

[0077] S5: blending fibers and then performing spinning

[0078] Cotton fibers are placed in a water bath, an antistatic agent is added, and water bath heat treatment is performed. Then the cotton fibers are dried, opened, and carded. The modified regenerated fibers are parallelized, spun, and wound into a bobbin to obtain blended yarn A. Meanwhile, the modified regenerated fibers and the modified polyurethane fibers are parallelized, spun, and wound into a bobbin to obtain blended yarn B. Finally, the blended yarn B is fed into the 1st, 2nd, and 3rd paths of a spinning machine, and the blended yarn A is fed into the 4th path of the spinning machine, and then spinning is performed to obtain the regenerated fiber antibacterial fabric. The modified regenerated fibers are blended with cotton fibers and modified polyurethane fibers respectively, and then spinning is performed according to a specific threading mode. The prepared fabric has strong antibacterial property and heat resistance, and the fabric still has strong antibacterial property after multiple washing, thereby achieving long-acting antibacterial effect and reducing resource waste.

[0079] The above examples only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A method for manufacturing a regenerated fiber antibacterial fabric, characterized by, Comprise the following steps: S1: surface modification of copper powder S1.1: copper powder, ethanol solution and glacial acetic acid are added into the reactor, the temperature inside the reactor is raised to 90-95℃ at a rate of 5-10℃ / min; S1.2: nitrogen is introduced into the reactor until the detector inside the reactor detects that the concentration of nitrogen is 98-100%; S1.3: the modifier is loaded into the hydraulic pump of the stirring device, the stirring device is started to stir, at the same time, the hydraulic pump pressurizes the modifier into the reactor, the reaction is carried out for 5-10h, then the product is washed and dried to obtain modified copper powder; S2: mixing waste polyester with modified copper powder The waste polyester is ground into powder, then mixed with the above modified copper powder, then lubricant and antioxidant are added, after mixing evenly, the mixture is obtained; S3: melt the mixture The above mixture is added into the screw spinning machine, the mixture is melted into melt in the melting zone of the screw spinning machine, then the melt is pressurized into the metering pump through the pressure pump, then the melt is extruded from the spinneret, then the filamentous melt is rapidly cooled and solidified through the refrigeration device to form yarn, and the modified regenerated fiber is obtained; S4: preparation of modified polyurethane fiber with silicone S4.1: silicone and epoxy acrylate are added into the stirrer at a molar ratio of 1-2:1, and the reaction is carried out under the protection of nitrogen for 1-2h; S4.2: toluene diisocyanate is added into the stirrer, the temperature in the stirrer is adjusted to 50-55℃, and the reaction is carried out for 2-5h; S4.3: aminopropyltrimethoxysilane is added into the stirrer, and the stirrer is naturally cooled while stirring to obtain a precursor; S4.4: antioxidant and ultraviolet absorber are added into the above precursor, and the mixture is stirred and then spun to obtain modified polyurethane fiber; S5: blending fibers and then spinning The cotton fiber is heat treated in water bath, then the above modified regenerated fiber is blended with the cotton fiber after heat treatment in water bath and the above modified polyurethane fiber, and finally the regenerated fiber antibacterial fabric is obtained by spinning.

2. The method according to claim 1, wherein, The step S2 of mixing waste polyester with modified copper powder comprises the following steps: S2.1: the waste polyester is broken, then put into the grinder to grind into powder at a speed of 1500-2000r / min to obtain a precursor powder; S2.2: the above precursor powder and the modified copper powder are added into the mixer to mix at a speed of 1200-1500r / min for 10-15min; S2.3: lubricant and antioxidant are added into the mixer to mix at a speed of 500-700r / min for 30-40min to obtain the mixture.

3. The method for manufacturing a regenerated fiber antibacterial fabric according to claim 2, characterized in that, The step S5 of blending fibers and then spinning comprises the following steps: S5.1: the cotton fiber is placed in the water bath, antistatic agent is added, and the cotton fiber is heat treated in water bath, and then dried; S5.2: the dried cotton fiber is opened and carded, then blended with the modified regenerated fiber to obtain blended yarn A by drawing, spinning and winding; S5.3: the modified regenerated fiber is blended with the modified polyurethane fiber to obtain blended yarn B by drawing, spinning and winding; S5.4: spinning by the textile machine in the yarn threading mode of threading blended yarn B in the 1st, 2nd and 3rd routes and threading blended yarn A in the 4th route to obtain the regenerated fiber antibacterial fabric.

4. The method for manufacturing a regenerated fiber antibacterial fabric according to claim 3, characterized in that, The reactor in the step S1.1 is internally provided with an oil storage tank, heat-conducting oil in the oil storage tank is heated by the waste heat in the reactor, and then the hot heat-conducting oil is introduced into the water bath heater in the step S5.1 to heat the water in the water bath heater, so as to perform the water bath heat treatment of the cotton fibers.

5. The method for manufacturing a regenerated fiber antibacterial fabric according to claim 1, characterized in that, The modifier is KH550 or TC-201.

6. The method for manufacturing a regenerated fiber antibacterial fabric according to claim 1, characterized in that, The organic silicon is vinyltrimethylsilane.

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