Preparation of anti-mite aromatic China-hemp blended core-spun yarn

Abstract

The invention discloses preparation of anti-mite aromatic China-hemp blended core-spun yarn, and particularly relates to the technical field of functional textiles, the anti-mite aromatic China-hemp blended core-spun yarn comprises a bottom plate, a side plate is fixedly connected to one side of the upper end face of the bottom plate, a constant-temperature water bath kettle is mounted on one side of the side plate and located on the upper end face of the bottom plate, and a flask is placed on the constant-temperature water bath kettle. The preparation method comprises the following steps: pretreating according to a conventional process of China-hemp to obtain rough China-hemp yarn, preparing an essential oil-containing SiO2 aerogel microcapsule, performing microencapsulation to obtain a powder sample, mixing and melting aromatic powder and resin powder to obtain finished fiber, and finally taking the aromatic fiber as core yarn, adjusting the proportion of the China-hemp and preparing the core-spun yarn by adopting a ring spinning system. Wherein the essential oil covers various flower fragrance types, the resin powder is formed by slicing and grinding one or more resins of polyester, polyamide and polyurethane, the aromatic synthetic fibers are coated with the hemp, so that the aromatic essential oil can be slowly released, the aroma volatilization time is prolonged, and the product has comfortable experience due to good hygroscopicity of the hemp.

Description

Technical Field

[0001] The invention relates to the technical field of functional textiles, and in particular to the preparation of an anti-mite aromatic hemp blended core-spun yarn. Background Art

[0002] Nowadays, people's living standards are constantly improving, and hotels are paying more and more attention to the guests' experience. Therefore, the guests' skin feel is also one of the main considerations when purchasing hotel room linens. The most important point of hotel decoration is to make guests feel at home and happy. Therefore, the selection of hotel textile fabrics is very important. Pure cotton fabrics are the most commonly used fabrics. They are soft and breathable, but they often cause bacteria and mites to breed due to their good hygroscopicity. On the other hand, high-intensity and multiple washings require the functionality of hotel supplies to be durable. Most of the aromatic anti-mite fabrics on the market are made by post-finishing methods, and the finishing liquid is realized through a padding process. However, with the increase in the number of washings, there are problems of shedding and functional degradation.

[0003] Chinese patent CN 113802201 B discloses a kind of aromatic mosquito-proof fabric and its preparation method, which is prepared into sandwich fiber by electrostatic spinning technology, wherein the middle spinning solution is mainly composed of modified chitosan and silica gel, and the outer spinning solution is mainly made of graphene oxide and silica gel, and the aromatic mosquito-proof fabric is further obtained by a weaving machine. However, this technology has the problems of complex production process, high equipment requirements, and difficulty in large-scale production;

[0004] Chinese patent CN 117845624 A discloses a fruit aroma sustained-release microcapsule emulsion for textiles and its application. The invention uses styrene-maleic anhydride copolymer as an emulsifier, fruit aroma essential oil as a core material, hydrogenated bisphenol A type epoxy resin and melamine-formaldehyde prepolymer as shell materials to prepare a hydrogenated epoxy-melamine double shell material fruit aroma essential oil sustained-release microcapsule emulsion. The microcapsule emulsion, adhesive and softener are further prepared into a finishing liquid, and the fruit aroma fabric is made into a padding method. The fabric is simple to prepare and the fragrance has a sustained release property, but there is a problem of poor air permeability of the fabric. Summary of the invention

[0005] The purpose of the present invention is to provide a method for preparing an anti-mite aromatic hemp blended core-spun yarn to solve the above-mentioned deficiencies in the technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a preparation method for mite-proof aromatic hemp blended core-spun yarn, comprising a bottom plate, a side plate is fixedly connected to one side of the upper end surface of the bottom plate, a constant temperature water bath is installed on one side of the side plate and located on the upper end surface of the bottom plate, a flask is placed on the constant temperature water bath, a first sealing plug cover is connected to the upper opening of the flask, and an injection pipe is connected to one side of the outer wall of the flask, a vacuum pump is provided on one side of the flask, an exhaust pipe is connected to the connecting end of the vacuum pump, an end of the exhaust pipe away from the vacuum pump is inserted into a pipe groove reserved in the first sealing plug cover, and an air inlet end of the exhaust pipe passes through the first sealing plug cover and extends to the interior of the flask, a sealing cover is clamped at the opening of the injection pipe, a placement rack is fixedly connected to the other side of the constant temperature water bath and located on the upper end surface of the bottom plate, the vacuum pump is installed on the upper end surface of the placement rack, and a placement seat is fixedly connected to one side of the constant temperature water bath and located on the upper end surface of the bottom plate.

[0007] Preferably, the side wall of the side plate is movably connected to a fixed plate, and a stirring assembly is provided on the fixed plate. The stirring assembly includes a driving motor fixedly connected to a groove of the fixed plate, and an output end of the driving motor is connected to a stirring rod, and the outside of the stirring rod is movably connected to a second sealing plug cover.

[0008] Preferably, a lifting assembly is provided at the connection between the fixed plate and the side plate, and the lifting assembly includes a slide groove opened on the outer wall of the side plate, a sliding block is embedded in the slide groove, and an electric telescopic rod is installed at the inner upper end of the slide groove.

[0009] Preferably, one end of the sliding block is fixedly connected to the fixing plate, and the free end of the electric telescopic rod is connected to the upper end surface of the sliding block.

[0010] Specifically, the aerogel is first put into the flask, and then the first sealing plug cover is covered, and then the vacuum pump is turned on and the flask is evacuated through the exhaust pipe. When the evacuation reaches a predetermined requirement or time, the vacuum pump is stopped, and essential oil is injected into the flask through the injection pipe (during evacuation, the inlet of the injection pipe is covered with a sealing cover), and then the constant temperature water bath is turned on to heat the flask at a constant temperature. After the heating is completed, the constant temperature water bath is turned off, the first sealing plug cover is pulled off, the flask is taken out of the constant temperature water bath, and placed on the opening of the placement seat. The electric telescopic rod is extended to drive the slider to move downward in the slide groove. At this time, the stirring assembly and the second sealing plug cover connected via the fixed plate descend until the second sealing plug cover is covered on the upper end of the flask. Deionized water is added to the flask through the injection tube, and the driving motor drives the stirring rod to rotate at a high speed to stir the mixed liquid (aerogel, essential oil and deionized water) in the flask. After the stirring is completed, the mixed liquid is taken out, and the mixed liquid is centrifuged, washed, separated and dried to obtain SiO2 aerogel microcapsules.

[0011] The present invention provides a method for preparing an anti-mite aromatic hemp blended core-spun yarn, which can be specifically described by the following examples:

[0012] Example 1

[0013] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0014] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask, evacuating the flask with a vacuum pump, injecting 15% essential oil into the flask, placing it at 70° C. for 6 h, adding deionized water to the flask, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0015] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0016] (4) adding 10% aromatic powder to 90% polyester resin powder, vacuum drying and then mixing and melting, filtering, extruding and spinning the melt into fibers, and drawing and winding to obtain finished fibers, the spinning temperature is 285° C., the spinning speed is 800 m / min, the drawing ratio is 3.2 times, the drawing temperature is 75° C., and the heat setting temperature is 125° C.;

[0017] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 75%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0018] Example 2

[0019] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0020] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask, evacuating the flask 4 with a vacuum pump, injecting 15% essential oil into the flask, placing it at 70° C. for 6 h, adding deionized water to the flask, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0021] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0022] (4) adding 8% aromatic powder to 92% polyester resin powder, vacuum drying and then mixing and melting, filtering the melt, extruding, spinning into fibers, and drawing and winding to obtain finished fibers, the spinning temperature is 285° C., the spinning speed is 800 m / min, the drawing ratio is 3.2 times, the drawing temperature is 75° C., and the heat setting temperature is 125° C.;

[0023] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 65%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0024] Example 3

[0025] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0026] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask, evacuating the flask with a vacuum pump, injecting 15% essential oil into the flask, placing it at 70° C. for 6 h, adding deionized water to the flask, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0027] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0028] (4) Add 10% aromatic powder to 90% polyester resin powder, vacuum dry and mix and melt, filter, extrude and filamentize the melt, and then draw and wind to obtain finished fiber. The spinning temperature is 285°C, the spinning speed is 800m / min, the drawing ratio is 3.2 times, the drawing temperature is 75°C, and the heat setting temperature is 125°C;

[0029] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 65%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0030] Example 4

[0031] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0032] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask, evacuating the flask with a vacuum pump, injecting 15% essential oil into the flask, placing it at 70° C. for 6 h, adding deionized water to the flask, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0033] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0034] (4) adding 8% aromatic powder to 92% polyester resin powder, vacuum drying and then mixing and melting, filtering the melt, extruding, spinning into fibers, and drawing and winding to obtain finished fibers, the spinning temperature is 285° C., the spinning speed is 800 m / min, the drawing ratio is 3.2 times, the drawing temperature is 75° C., and the heat setting temperature is 125° C.;

[0035] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 75%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0036] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0037] The present invention firstly pre-treats hemp according to the conventional process to obtain hemp roving, then prepares SiO2 aerogel microcapsules containing essential oils and microencapsulates them to obtain powder samples, then mixes and melts the aromatic powder with the resin powder to obtain the finished fiber, and finally uses the aromatic fiber as the core yarn, adjusts the hemp ratio and adopts a ring spinning system to prepare the core-spun yarn, wherein the essential oil covers a variety of floral scents, and the resin powder is made by grinding one or more resin slices of polyester, polyamide and polyurethane. By coating the aromatic synthetic fiber with hemp, the aromatic essential oil can be slowly released and the volatilization time of the fragrance can be prolonged. The good hygroscopicity of hemp gives the product a comfortable experience. Secondly, as a natural green and environmentally friendly fiber, hemp has natural antibacterial, mildew-proof and mite-proof properties, moisture absorption and quick-drying properties, odor adsorption and UV resistance, which bring many excellent qualities to the product. The prepared composite fiber cleverly combines the softness and comfort of natural fibers with the high strength of synthetic fibers, and comprehensively improves the product quality and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a schematic diagram of the SiO2 device aerogel microcapsule preparation device of the present invention;

[0040] Figure 2 It is a partially cutaway schematic diagram of a device for preparing aerogel microcapsules of a SiO2 device of the present invention;

[0041] Figure 3 It is an enlarged schematic diagram of the connection between the second sealing plug cover and the stirring assembly of the SiO2 device aerogel microcapsule preparation device of the present invention;

[0042] Figure 4 It is an enlarged schematic diagram of the connection between the fixed plate and the lifting assembly of the SiO2 device aerogel microcapsule preparation device of the present invention;

[0043] Figure 5 It is a flow chart of the preparation process of the present invention.

[0044] Description of reference numerals:

[0045] 1. Bottom plate; 2. Side plate; 3. Constant temperature water bath; 4. Flask; 5. First sealing plug cover; 6. Fixed plate; 7. Driving motor; 8. Stirring rod; 9. Second sealing plug cover; 10. Placement rack; 11. Vacuum pump; 12. Vacuum pipe; 13. Injection pipe; 14. Slide; 15. Sliding block; 16. Electric telescopic rod; 17. Placement seat. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] The present invention provides Figure 1-Figure 4 The device for preparing a mite-proof aromatic hemp blended core-spun yarn shown comprises:

[0048] A bottom plate 1 is fixedly connected to a side plate 2 on one side of the upper end surface of the bottom plate 1, a constant temperature water bath 3 is installed on one side of the side plate 2 and located on the upper end surface of the bottom plate 1, a flask 4 is placed on the constant temperature water bath 3, a first sealing plug cover 5 is connected to the upper end opening of the flask 4, and an injection pipe 13 is connected to one side of the outer wall of the flask 4, a vacuum pump 11 is provided on one side of the flask 4, an exhaust pipe 12 is connected to the connecting end of the vacuum pump 11, the exhaust pipe 12 is away from the vacuum pump 11. The end of the exhaust pipe 12 is inserted into the pipe groove reserved in the first sealing plug cover 5, and the air inlet end of the exhaust pipe 12 passes through the first sealing plug cover 5 and extends to the interior of the flask 4, and a sealing cover is clamped at the opening of the injection pipe 13, a placement rack 10 is fixedly connected to the other side of the constant temperature water bath 3 and located on the upper end surface of the bottom plate 1, the vacuum pump 11 is installed on the upper end surface of the placement rack 10, and a placement seat 17 is fixedly connected to one side of the constant temperature water bath 3 and located on the upper end surface of the bottom plate 1.

[0049] Further, see Figure 2-Figure 4 As shown, the side wall of the side plate 2 is movably connected to a fixed plate 6, and a stirring assembly is provided on the fixed plate 6. The stirring assembly includes a driving motor 7 fixedly connected to a groove of the fixed plate 6, and an output end of the driving motor 7 is connected to a stirring rod 8. The outside of the stirring rod 8 is movably connected to a second sealing plug cover 9.

[0050] A lifting assembly is provided at the connection between the fixed plate 6 and the side plate 2 , and the lifting assembly includes a slide groove 14 opened on the outer wall of the side plate 2 , a slider 15 is embedded in the slide groove 14 , and an electric telescopic rod 16 is installed at the upper end of the slide groove 14 .

[0051] One end of the slider 15 is fixedly connected to the fixing plate 6 , and the free end of the electric telescopic rod 16 is connected to the upper end surface of the slider 15 .

[0052] Specifically, the aerogel is first put into the flask 4, and then the first sealing plug cover 5 is covered, and then the vacuum pump 11 is turned on and the flask 4 is evacuated through the exhaust pipe 12. When the evacuation reaches the predetermined requirement or time, the vacuum pump 11 is stopped, and the essential oil is injected into the flask 4 through the injection pipe 13 (when evacuating, the inlet of the injection pipe 13 is covered with a sealing cover), and then the constant temperature water bath 3 is turned on to heat the flask 4 at a constant temperature. After the heating is completed, the constant temperature water bath 3 is turned off, the first sealing plug cover 5 is pulled off, and the flask 4 is taken out of the constant temperature water bath 3 and placed on the opening of the placement seat 17. The electric telescopic rod 16 is extended to drive the slider 15 to move down in the slide groove 14. At this time, the stirring assembly and the second sealing plug cover 9 connected by the fixed plate 6 are lowered until the second sealing plug cover 9 is covered on the upper end of the flask 4. Deionized water is added to the flask 4 through the injection tube 13, and the stirring rod 8 is driven by the driving motor 7 to rotate at a high speed to stir the mixed liquid (aerogel, essential oil and deionized water) in the flask 4. After the stirring is completed, the mixed liquid is taken out, and the mixed liquid is centrifuged, washed, separated and dried to obtain SiO2 aerogel microcapsules.

[0053] The present invention provides Figure 5 The method for preparing the anti-mite aromatic hemp blended core-spun yarn shown can be specifically described by the following examples:

[0054] Example 1

[0055] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0056] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask 4, evacuating the flask 4 with a vacuum pump 11, injecting 15% essential oil into the flask 4, placing it at 70° C. for 6 h, adding deionized water into the flask 4, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0057] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0058] (4) adding 10% aromatic powder to 90% polyester resin powder, vacuum drying and then mixing and melting, filtering, extruding and spinning the melt into fibers, and drawing and winding to obtain finished fibers, the spinning temperature is 285° C., the spinning speed is 800 m / min, the drawing ratio is 3.2 times, the drawing temperature is 75° C., and the heat setting temperature is 125° C.;

[0059] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 75%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0060] Example 2

[0061] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0062] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask 4, evacuating the flask 4 with a vacuum pump 11, injecting 15% essential oil into the flask 4, placing it at 70° C. for 6 h, adding deionized water into the flask 4, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0063] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0064] (4) adding 8% aromatic powder to 92% polyester resin powder, vacuum drying and then mixing and melting, filtering the melt, extruding, spinning into fibers, and drawing and winding to obtain finished fibers, the spinning temperature is 285° C., the spinning speed is 800 m / min, the drawing ratio is 3.2 times, the drawing temperature is 75° C., and the heat setting temperature is 125° C.;

[0065] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 65%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0066] Example 3

[0067] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0068] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask 4, evacuating the flask 4 with a vacuum pump 11, injecting 15% essential oil into the flask 4, placing it at 70° C. for 6 h, adding deionized water into the flask 4, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0069] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0070] (4) Add 10% aromatic powder to 90% polyester resin powder, vacuum dry and mix and melt, filter, extrude and filamentize the melt, and then draw and wind to obtain finished fiber. The spinning temperature is 285°C, the spinning speed is 800m / min, the drawing ratio is 3.2 times, the drawing temperature is 75°C, and the heat setting temperature is 125°C;

[0071] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 65%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0072] Example 4

[0073] (1) pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving;

[0074] (2) Weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask 4, evacuating the flask 4 with a vacuum pump 11, injecting 15% essential oil into the flask 4, placing it at 70° C. for 6 h, adding deionized water into the flask 4, stirring at high speed, centrifuging, washing, separating, and drying to obtain SiO2 aerogel microcapsules;

[0075] (3) microencapsulating the mixed solution through a spray dryer and collecting the powder sample in a bottle;

[0076] (4) adding 8% aromatic powder to 92% polyester resin powder, vacuum drying and then mixing and melting, filtering the melt, extruding, spinning into fibers, and drawing and winding to obtain finished fibers, the spinning temperature is 285° C., the spinning speed is 800 m / min, the drawing ratio is 3.2 times, the drawing temperature is 75° C., and the heat setting temperature is 125° C.;

[0077] (5) With aromatic fiber as the core yarn, the hemp ratio was adjusted to 75%, and a ring spinning system was used. The spindle speed was set to 7214 r / m, the twist was 800 twists / m, and the front roller drawing speed was 9.00 m / min to prepare hemp / synthetic fiber core-spun yarn.

[0078] Comparative Example

[0079] The difference between Comparative Example 1 and Example 1 is that the outer core is pure cotton fiber.

[0080] The difference between Comparative Example 2 and Example 1 is that the inner core is pure polyester fiber.

[0081] The single-sided jersey woven from the core-spun yarn fiber was tested according to the 9.1 repellency method of "GB / T 24253-2009 Evaluation of Textile Anti-mite Performance", and the dust mite sample was pretreated: dried at 65℃ for 10 minutes, and washed 20 times according to "GB / T12490-2007 Textile Color Fastness Test for Home and Commercial Washing Color Fastness". The test results are shown in Table 1. The examples in the test results all show a mite repellency rate of ≥60%. The standard evaluation criteria are as follows: repellency rate ≥95%, the sample has a very strong anti-mite effect; repellency rate ≥80%, the sample has a strong anti-mite effect; repellency rate ≥60%, the sample has an anti-mite effect. According to the test results, the fabric sample has an anti-mite effect.

[0082] Table 1 Anti-mite performance test results (unit: %)

[0083]

[0084] The fiber was tested for its strength and tensile properties according to GB / T 14344 Test method for tensile properties of chemical fiber filaments. The test results are shown in Table 2, indicating that the core-spun yarn has good strength.

[0085] Table 2 Strength test results (unit: cN / tex)

[0086]

[0087] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for preparing anti-mite aromatic hemp blended core-spun yarn, characterized in that: include: A bottom plate (1), a side plate (2) is fixedly connected to one side of the upper end surface of the bottom plate (1), a constant temperature water bath (3) is installed on one side of the side plate (2) and located on the upper end surface of the bottom plate (1), a flask (4) is placed on the constant temperature water bath (3), a first sealing plug cover (5) is connected to the upper opening of the flask (4), and an injection pipe (13) is connected to one side of the outer wall of the flask (4), a vacuum pump (11) is provided on one side of the flask (4), and a vacuum pipe (12) is connected to the connecting end of the vacuum pump (11), and a placement seat (17) is fixedly connected to one side of the constant temperature water bath (3) and located on the upper end surface of the bottom plate (1); The side wall of the side plate (2) is movably connected to a fixed plate (6), and a stirring assembly is provided on the fixed plate (6). The stirring assembly includes a driving motor (7) fixedly connected to a groove of the fixed plate (6), and an output end of the driving motor (7) is connected to a stirring rod (8), and the outside of the stirring rod (8) is movably connected to a second sealing plug cover (9).

2. The device for preparing the anti-mite aromatic hemp blended core-spun yarn according to claim 1, characterized in that: The end of the exhaust pipe (12) away from the vacuum pump (11) is inserted into a pipe groove reserved in the first sealing plug cover (5), and the air inlet end of the exhaust pipe (12) passes through the first sealing plug cover (5) and extends to the interior of the flask (4), and a sealing cover is clamped at the opening of the injection pipe (13).

3. The device for preparing the anti-mite aromatic hemp blended core-spun yarn according to claim 1, characterized in that: A lifting assembly is provided at the connection between the fixed plate (6) and the side plate (2), and the lifting assembly comprises a slide groove (14) opened on the outer wall of the side plate (2), a slider (15) is embedded in the slide groove (14), and an electric telescopic rod (16) is installed at the upper end of the slide groove (14).

4. The device for preparing the anti-mite aromatic hemp blended core-spun yarn according to claim 3, characterized in that: One end of the slider (15) is fixedly connected to the fixed plate (6), and the free end of the electric telescopic rod (16) is connected to the upper end surface of the slider (15).

5. The device for preparing the anti-mite aromatic hemp blended core-spun yarn according to claim 1, characterized in that: A placement rack (10) is fixedly connected to the other side of the constant temperature water bath (3) and located on the upper end surface of the bottom plate (1), and the vacuum pump (11) is installed on the upper end surface of the placement rack (10).

6. A method for preparing anti-mite aromatic hemp blended core-spun yarn, using the device for preparing anti-mite aromatic hemp blended core-spun yarn according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Pre-treating hemp according to conventional hemp processing, opening and combing, needle combing and combing, boiling, bleaching, degumming and combing to obtain hemp roving; S2, weighing 0.4 g of SiO2 aerogel and putting it into a 50 mL flask (4), using a vacuum pump (11) to evacuate the flask (4), injecting 5%-20% essential oil into the flask (4), leaving it at 50-90° C. for 2-8 hours, adding deionized water into the flask (4), stirring at high speed, centrifuging, washing, separating and drying, and obtaining SiO2 aerogel microcapsules; S3, microencapsulating the mixed solution through a spray dryer, and collecting the powder sample in the bottle; S4, adding 5-25% aromatic powder to 70-90% resin powder, vacuum drying and then mixing and melting, filtering, extruding and spinning the melt into fibers, and drawing and winding to obtain finished fibers, the spinning temperature is 285°C, the spinning speed is 800m / min, the drawing ratio is 3.2 times, the drawing temperature is 75°C, and the heat setting temperature is 125°C; S5. With aromatic fiber as core yarn, the proportion of hemp is adjusted to 55%-75%, and a ring spinning system is used. The spindle speed is set to 7214r / m, the twist is 800 twists / m, and the front roller drawing speed is 9.00m / min to prepare hemp / synthetic fiber core-spun yarn.

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