Herbal antibacterial deodorizing polyester master batch, fiber and preparation method thereof

Abstract

The invention relates to herbal antibacterial and deodorizing polyester master batch, a fiber and a preparation method of the herbal antibacterial and deodorizing polyester master batch. The herbal antibacterial and deodorizing polyester master batch comprises the following components: polyester PET, an antioxidant, a dispersing agent and herbal antibacterial and deodorizing particles, the herbal antibacterial deodorizing particles comprise a first coating agent, a second coating agent and herbal extract powder, the first coating agent and the second coating agent form a coating layer on the surface of the herbal extract powder, the first coating agent is an oil-soluble coating agent, and the second coating agent is an oil-insoluble coating agent. Different from the prior art, the processing performance and high-temperature stability of the herbal extract in master batch and fiber preparation are improved by adopting the two-component coating agent. Through the fiber oiling stage, one component is selectively dissolved, a porous structure is formed, and it is ensured that effective components of the herbal extract are antibacterial and deodorized for a long time.

Description

Technical Field

[0001] The present application relates to the field of textiles, and in particular to a herbal antibacterial and deodorizing polyester masterbatch, fiber and a preparation method thereof. Background Art

[0002] Antibacterial and deodorizing fibers have the function of inhibiting bacterial growth and eliminating odors. By adding antibacterial agents or using raw materials with antibacterial properties, the fibers have antibacterial, deodorizing and self-cleaning properties. This fiber can effectively inhibit bacterial growth and reduce the odor produced when bacteria decompose sweat, thereby maintaining cleanliness and improving wearing comfort. In the fields of medical care, hygiene and clothing, antibacterial and deodorizing fibers are widely used, such as medical textiles, baby diapers, adult incontinence pads and other sanitary products, as well as underwear, socks, sportswear and other daily clothing. Therefore, antibacterial and deodorizing fibers are of great significance to improving people's quality of life and health level.

[0003] In the current technical field, inorganic components can be integrated into antibacterial and deodorizing masterbatches, but given the potential risks of inorganic components to human health, the development of herbal-based deodorizing fibers is particularly critical. Current technologies mostly use the process of mixing processed herbal deodorizing particles with a matrix and spinning them directly into fibers or adding additives through subsequent treatment after fiber formation. In order to enhance the adsorption effect between the additive and the fiber, the fiber is usually selectively treated with an acid / alkaline solution. Although this method is effective, the acid / alkaline substances used may have a negative impact on the environment, so appropriate measures need to be taken to deal with the residues. This process does not go through the masterbatch stage, which may result in the herbal additives not being tightly bound to the fiber, thereby affecting its service life and functional stability. Therefore, it is crucial to develop a method suitable for preparing antibacterial masterbatches with herbal extracts as the main ingredient. Summary of the invention

[0004] In view of the above problems, the present invention provides a method for preparing herbal antibacterial and deodorizing polyester masterbatch and fiber, which uses a two-component coating agent to improve the processing performance and high-temperature stability of herbal extracts in the preparation of masterbatch and fiber. Through the fiber oiling stage, one of the components is selectively dissolved to form a porous structure, ensuring that the effective ingredients of the herbal extract have long-term antibacterial and deodorizing effects. This process not only reduces environmental pollution, but also does not require the removal of acid and alkali residues.

[0005] The first aspect of the present invention provides an herbal antibacterial and deodorizing polyester masterbatch, which comprises the following components: polyester PET, an antioxidant, a dispersant and herbal antibacterial and deodorizing particles; the components of the herbal antibacterial and deodorizing particles include a first coating agent, a second coating agent and herbal extract powder, the first coating agent and the second coating agent form a coating layer on the surface of the herbal extract powder, the first coating agent is an oil-soluble coating agent, and the second coating agent is an oil-insoluble coating agent.

[0006] Different from the prior art, the present invention uses a two-component coating agent to coat the herbal extract to obtain herbal antibacterial and deodorizing polyester masterbatch and herbal antibacterial and deodorizing polyester fiber. The first coating agent is selectively dissolved during the fiber oiling stage to give the herbal antibacterial and deodorizing particles a porous structure, so that they exhibit excellent antibacterial and deodorizing effects in the fiber. At the same time, the coated herbal antibacterial and deodorizing particles effectively protect the herbal extract and prevent it from degrading under the high temperature environment of melt spinning. In addition, for the herbal antibacterial and deodorizing fiber prepared by the masterbatch method, the herbal antibacterial and deodorizing particles are not easy to fall off, thereby enhancing the washability of the fiber. This method not only reduces environmental pollution, but also eliminates the need to remove residues.

[0007] Furthermore, the herbal antibacterial and deodorizing particles include the following components in percentage by mass: 55-70% herbal extract powder, 15-25% first coating agent, 15-20% second coating agent, and 0.5-1% modifier.

[0008] Furthermore, the particle size of the herbal antibacterial and deodorizing particles is 300 to 500 nm.

[0009] Furthermore, the first coating agent is paraffin.

[0010] Furthermore, the second coating agent includes one or more of silicon dioxide, calcium carbonate, and talc.

[0011] Furthermore, the particle size of the polyester PET is 45-60 mesh, and the specific viscosity is 0.65-0.70 dl / g;

[0012] Furthermore, the herbal antibacterial and deodorizing polyester masterbatch comprises the following components in parts by weight: 45 to 70 parts by weight of polyester PET, 0.5 to 1 parts by weight of antioxidant, 0.5 to 1 parts by weight of dispersant, and 30 to 55 parts by weight of herbal antibacterial and deodorizing particles.

[0013] The second aspect of the present invention provides a method for preparing an herbal antibacterial and deodorizing polyester masterbatch, comprising the following steps: uniformly mixing the components described in the first aspect of the present invention and adding them into a twin-screw extruder for melt extrusion granulation to obtain the herbal antibacterial and deodorizing polyester masterbatch.

[0014] The third aspect of the present invention provides a method for preparing an herbal antibacterial and deodorizing polyester fiber, comprising the following steps: melt-blending 85% to 95% of polyester PET and 5 to 15% of the herbal antibacterial and deodorizing polyester masterbatch described in the first aspect of the present invention, spinning, and oiling to obtain the herbal antibacterial and deodorizing polyester fiber.

[0015] Furthermore, in the oiling step, the oil solution used is a special oil agent for polyester POY spinning, and the winding speed is 300-500 m / min.

[0016] The fourth aspect of the present invention provides a herbal antibacterial and deodorizing polyester fiber, which is prepared by the preparation method described in the third aspect of the present invention.

[0017] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the written contents of the specification, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the specific implementation methods of the present application are explained below. DETAILED DESCRIPTION

[0018] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments.

[0019] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description in conjunction with the specific embodiments listed. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0020] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0021] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0022] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0023] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0024] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0025] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0026] The first aspect of the present invention provides an herbal antibacterial and deodorizing polyester masterbatch, which comprises the following components: polyester PET, an antioxidant, a dispersant and herbal antibacterial and deodorizing particles; the components of the herbal antibacterial and deodorizing particles include a first coating agent, a second coating agent and herbal extract powder; the first coating agent is an oil-soluble coating agent, and the second coating agent is an oil-insoluble coating agent; the first coating agent and the second coating agent form a coating layer on the surface of the herbal extract powder.

[0027] The first coating agent and the second coating agent protect the herbal extract powder through the coating layer, improve the dispersibility and interface compatibility of the herbal extract powder in the matrix to improve the processing performance, and at the same time use the coating layer to slow down heat transfer and provide a physical barrier to improve the thermal stability of the herbal extract powder.

[0028] Different from the prior art, the present invention uses a two-component coating agent to coat the herbal extract to obtain herbal antibacterial and deodorizing polyester masterbatch and herbal antibacterial and deodorizing polyester fiber. The first coating agent is selectively dissolved during the fiber oiling stage to give the herbal antibacterial and deodorizing particles a porous structure, so that its functional components can be released, showing excellent antibacterial and deodorizing effects in the fiber. At the same time, the coated herbal antibacterial and deodorizing particles effectively protect the herbal extract and prevent it from degrading under the high temperature environment of melt spinning. In addition, for the herbal antibacterial and deodorizing fiber prepared by the masterbatch method, the herbal antibacterial and deodorizing particles are not easy to fall off, thereby enhancing the washability of the fiber. The use of this method not only reduces environmental pollution, but also eliminates the need to remove residues.

[0029] Furthermore, the herbal antibacterial and deodorizing particles include the following components in percentage by mass: 55-70% herbal extract powder, 15-25% first coating agent, 15-20% second coating agent, and 0.5-1% modifier.

[0030] Furthermore, the particle size of the herbal antibacterial and deodorizing particles is 300-500 nm, which can ensure that the herbal antibacterial and deodorizing particles are evenly dispersed in the polyester PET and reduce aggregation.

[0031] Furthermore, the first coating agent is paraffin wax, which is liquid paraffin wax and has good oil solubility and fluidity, so that it can be evenly covered on the surface of the powder particles to form a stable protective layer.

[0032] Furthermore, the second coating agent includes one or more of silicon dioxide, calcium carbonate, and talcum powder. Silicon dioxide forms a uniform film on the surface of the powder by physical adsorption or chemical bonding. Talc uses its lubricity and dispersibility to adhere to the surface of the powder by physical adsorption or chemical bonding. Calcium carbonate forms a film layer on the surface of the powder by ion exchange reaction or mechanical mixing. The above substances are almost insoluble in oil solution.

[0033] Further, the herbal extract powder is one or more of persimmon extract, lotus leaf extract, apple extract, mulberry extract, lavender extract, bergamot extract, sage extract, coriander extract, rose extract, jasmine extract, ylang-ylang extract, scutellaria extract, sugarcane extract, phoenix grass extract, purslane extract, aloe extract, wormwood extract, ginger extract, mint extract, camellia extract, marigold extract, isatis indigo leaf extract, tea extract, podocarpus extract, schisandra extract, chamomile extract, hibiscus extract, white orchid extract, gardenia extract, hops extract, seaweed extract, and chitin. Lavender extract is preferred.

[0034] Furthermore, the preparation of the herbal antibacterial and deodorizing particles comprises the following steps:

[0035] Drying: The herbal extract powder is vacuum dried at 120-170°C for 4-8 hours.

[0036] Weighing: weigh according to the formula components of the herbal antibacterial and deodorizing particles;

[0037] Mixing: After coating 1 and coating 2 are evenly mixed, they are evenly mixed with other components at room temperature. The herbal extract powder is coated by coating 1 and coating 2 to form herbal antibacterial and deodorizing particles.

[0038] Furthermore, the modifier is a silane coupling agent, specifically any one of KH550, KH560, and KH570.

[0039] Furthermore, the particle size of the polyester PET is 45 to 60 meshes, and the specific viscosity is 0.65 to 0.70 dl / g. If the particle size of the PET powder is too fine, it will be easy to crystallize during the drying process, and sometimes even form a gel, which increases the melting temperature, which is not conducive to the twin-screw melt processing. On the other hand, if PET chips are used, although some problems can be solved, it is not conducive to the uniform mixing of polyester with functional modifiers and other additives. Therefore, the selection of PET powder with a particle size of 45 to 60 meshes is the best solution. Such powder can not only avoid the above problems, but also ensure that the specific viscosity of the polyester is maintained at 0.65 to 0.7 dl / g after the functional masterbatch is prepared by a primary screw extruder, which is neither too low nor too low, and can meet the needs of polyester spinning.

[0040] Furthermore, the antioxidant is one or more of antioxidant 1010, antioxidant 168, and antioxidant 1076. Polyester PET will produce certain thermal cracking or thermal oxidation degradation during the melt processing, and adding an appropriate amount of antioxidant can reduce the thermal oxidation degradation of polyester PET.

[0041] Furthermore, the dispersant is one or more of erucic acid amide, polyester modified polyphosphate dispersant, ethylene bisstearamide, and polyvinyl pyrrolidone; the addition of the dispersant can further optimize the dispersibility of the herbal deodorizing particles in polyester PET and prevent aggregation.

[0042] Furthermore, the herbal antibacterial and deodorizing polyester masterbatch comprises the following components in parts by weight: 45 to 70 parts by weight of polyester PET, 0.5 to 1 parts by weight of antioxidant, 0.5 to 1 parts by weight of dispersant, and 30 to 55 parts by weight of herbal antibacterial and deodorizing particles.

[0043] The second aspect of the present invention provides a method for preparing an herbal antibacterial and deodorizing polyester masterbatch, comprising the following steps: uniformly mixing the components described in the first aspect of the present invention and adding them into a twin-screw extruder for melt extrusion granulation to obtain the herbal antibacterial and deodorizing polyester masterbatch.

[0044] Furthermore, the preparation method comprises the following steps:

[0045] Drying: vacuum dry the polyester PET, dispersant, antioxidant, and herbal deodorant particles at 120-180°C for 4-8 hours;

[0046] Weighing: weigh the dried components according to the formula of herbal antibacterial and deodorizing polyester masterbatch;

[0047] Mixing: Mix all components at room temperature to obtain a uniformly distributed mixture;

[0048] Melt extrusion: adding the mixture to a twin-screw extruder for melt extrusion granulation, and then drying to obtain herbal antibacterial and deodorizing polyester masterbatch. The twin-screw extruder adopts 11-zone temperature settings, the temperatures are 180℃-245℃-250℃-255℃-260℃-235℃-235℃-230℃-230℃-230℃-250℃, the cooling temperature is 15-25℃, and the screw speed of the twin-screw extruder is 300-500r / min.

[0049] The third aspect of the present invention provides a method for preparing an herbal antibacterial and deodorizing polyester fiber, comprising the following steps: melt-blending 85% to 95% of polyester PET and 5 to 15% of the herbal antibacterial and deodorizing polyester masterbatch described in the first aspect of the present invention, spinning, and oiling to obtain the herbal antibacterial and deodorizing polyester fiber.

[0050] Coating the coated object improves the thermal stability and processing performance of the coated object.

[0051] In the process of preparing the fiber, oiling is performed to reduce static electricity and increase lubricity. In this process, the fiber passes through the oil solution, in which the oil-soluble first coating agent is selectively dissolved, while the second coating agent is retained, and only the second coating agent remains on the surface of the coated object, thereby forming a porous structure of the coating layer.

[0052] Furthermore, in the oiling step, the oil solution used is a special oil agent for polyester POY spinning, and the winding speed is 300-500 m / min.

[0053] Furthermore, the spinneret is a circular spinneret or a non-circular spinneret, and the non-circular spinneret mainly includes: Y-shaped, X-shaped, cross-shaped, trilobal, and multi-hole spinnerets, and the Y-shaped is preferred.

[0054] The fourth aspect of the present invention provides a herbal antibacterial and deodorizing polyester fiber, which is prepared by the preparation method described in the third aspect of the present invention.

[0055] Embodiment 1:

[0056] (1) A method for preparing herbal antibacterial and deodorizing particles comprises the following steps:

[0057] The herbal antibacterial and deodorizing particles are composed of: 64.5% lavender extract powder; 20% paraffin; 15% silicon dioxide; and 0.5% silane coupling agent KH550.

[0058] Drying: The herbal extract powder is vacuum dried at 120-170°C for 4-8 hours.

[0059] Weighing: Weigh the dried lavender extract powder, paraffin, silicon dioxide, and silane coupling agent KH550 according to the weight proportions of the individual components in the herbal antibacterial and deodorizing particles.

[0060] Mixing: First mix the paraffin wax and silicon dioxide evenly at room temperature, then add the lavender extract powder and silane coupling agent KH550 and mix evenly at room temperature; the lavender extract powder is wrapped by the paraffin wax and silicon dioxide to form herbal antibacterial and deodorizing particles.

[0061] (2) A method for preparing a herbal antibacterial and deodorizing polyester masterbatch comprises the following steps:

[0062] The composition of the herbal antibacterial and deodorizing masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucamide.

[0063] (3) Preparation of herbal antibacterial and deodorizing polyester masterbatch:

[0064] Drying: vacuum dry the polyester PET, dispersant, antioxidant and herbal deodorizing particles at 120-180°C for 4-8 hours.

[0065] Weighing: Weigh the dried polyester PET, dispersant, antioxidant, and herbal deodorizing particles according to the weight proportions of the individual components in the masterbatch.

[0066] Mixing: Evenly mix the polyester PET, dispersant, antioxidant and herbal deodorizing particles at room temperature to obtain a uniformly distributed mixture.

[0067] Melt extrusion: add the mixture into a twin-screw extruder, perform melt extrusion granulation, and then dry to obtain herbal antibacterial and deodorizing polyester masterbatch. The twin-screw extruder adopts 11-zone temperature settings, the temperatures are 180℃-245℃-250℃-255℃-260℃-235℃-235℃-230℃-230℃-230℃-250℃, the cooling temperature is 15-25℃, and the screw speed of the twin-screw extruder is 300-500r / min.

[0068] (4) A method for preparing herbal antibacterial and deodorizing polyester fiber has the following steps:

[0069] Melt spinning: 90% of conventional polyester PET and 10% of the above-mentioned herbal antibacterial and deodorizing polyester masterbatch are melt-blended, then spun, oiled, and wound to obtain herbal antibacterial and deodorizing polyester fibers. The oil solution used is SLT-265 from Suretop Oil Co., Ltd., Hangzhou, and the winding speed is 400 m / min.

[0070] Yarn weaving: Fibers are drawn and twisted into yarns and then made into textiles using conventional methods. The spinneret is a circular spinneret.

[0071] Embodiment 2:

[0072] The difference between this embodiment and embodiment 1 is that:

[0073] Composition of herbal antibacterial and deodorizing particles: lavender extract powder 59.5%; paraffin 20%; silicon dioxide 20%; silane coupling agent KH5500.5%;

[0074] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0075] Embodiment 3:

[0076] The difference between this embodiment and embodiment 1 is that:

[0077] The herbal antibacterial and deodorizing particles are composed of: 64.5% lavender extract powder; 20% paraffin; 15% silicon dioxide; and 0.5% silane coupling agent KH550.

[0078] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 53 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 45 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0079] Embodiment 4:

[0080] The difference between this embodiment and embodiment 1 is that:

[0081] Composition of herbal antibacterial and deodorizing particles: Gardenia extract powder 64.5%; paraffin 20%; silicon dioxide 15%; silane coupling agent KH5500.5%;

[0082] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0083] Embodiment 5:

[0084] The difference between this embodiment and embodiment 1 is that:

[0085] Composition of herbal antibacterial and deodorizing particles: lotus leaf extract powder 64.5%; paraffin 20%; silicon dioxide 15%; silane coupling agent KH5500.5%;

[0086] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0087] Embodiment 6:

[0088] The difference between this embodiment and embodiment 1 is that:

[0089] The herbal antibacterial and deodorizing particles are composed of: 64.5% lavender extract powder; 20% paraffin; 15% silicon dioxide; and 0.5% silane coupling agent KH550.

[0090] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a Y-type heterosexual spinneret.

[0091] Embodiment 7:

[0092] The difference between this embodiment and embodiment 1 is that:

[0093] Composition of herbal antibacterial and deodorizing particles: 64.5% lavender extract powder; 20% paraffin; 15% calcium carbonate; 0.5% silane coupling agent KH550;

[0094] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0095] Comparative Example 1: The difference between this comparative example and Example 1 is that:

[0096] Composition of herbal antibacterial and deodorizing particles: 69.5% lavender extract powder; 15% paraffin; 15% silicon dioxide; 0.5% silane coupling agent KH550;

[0097] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0098] Comparative Example 2: The difference between this comparative example and Example 1 is that:

[0099] Composition of herbal antibacterial and deodorizing particles: lavender extract powder 79.5%; silicon dioxide 20%; silane coupling agent KH5500.5%;

[0100] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0101] Comparative Example 3: The difference between this comparative example and Example 1 is that:

[0102] Composition of herbal antibacterial and deodorizing particles: lavender extract powder 79.5%; paraffin 20%; silane coupling agent KH55000.5%;

[0103] The composition of the herbal antibacterial and deodorizing polyester masterbatch is: 58 parts of polyester PET, 1 part of antioxidant, 1 part of dispersant, and 40 parts of herbal antibacterial and deodorizing particles. The antioxidant is antioxidant 1010; the dispersant is erucic acid amide. The spinneret adopts a circular spinneret.

[0104] Performance testing:

[0105] 1. Deodorization rate: The deodorization performance of the yarn woven fabrics in Examples 1-7 and Comparative Examples 1-3 was tested according to GB / T 33610.1-2019 Determination of deodorization performance of textiles.

[0106] Table 1 Deodorization performance test results of yarn fabrics of Examples 1-7 and Comparative Examples 1-3

[0107] name Ammonia reduction rate (%) Isovaleric acid reduction rate (%) Example 1 81.8 91.7 Example 2 80.2 90.3 Example 3 82.3 92.2 Example 4 76.4 88.9 Example 5 73.2 86.6 Example 6 82.4 92.4 Example 7 82.3 92.5 Comparative Example 1 41.2 48.7 Comparative Example 2 5.7 6.8 Comparative Example 3 24.6 27.5

[0108] As can be seen from Table 1, the deodorization performance test results of the yarn fabrics prepared in Examples 1-2 and Comparative Examples 1-3 found that with the increase of the coating agent, the reduction rate of ammonia and isovaleric acid was significantly better than the case of a smaller addition amount in Comparative Example 1, but with the increase of the coating agent, the reduction rate of ammonia and isovaleric acid decreased. At the same time, the deodorization performance test results of the yarn fabrics prepared in Examples 1 and 3 found that after increasing the amount of herbal antibacterial deodorizing particles added, the reduction rate of ammonia and isovaleric acid in the herbal antibacterial deodorizing polyester fiber fabric in Example 3 was significantly better than the case of a smaller addition amount in Example 1; and within a certain range, the greater the amount of herbal antibacterial deodorizing particles added, the more obvious the deodorization effect of the herbal antibacterial deodorizing polyester fiber. Then, the deodorization performance test results of the yarn fabrics prepared in Examples 1, 4, and 5 found that under the same addition amount conditions, the yarn fabric prepared by adding lavender extract had the best deodorization effect. Among them, the deodorizing performance test results of the yarn fabrics prepared in Examples 1 and 6 showed that the herbal antibacterial and deodorizing polyester fiber fabric in Example 6 had a significantly better reduction rate of ammonia and isovaleric acid than the circular spinneret in Example 1 after the Y-type spinneret was replaced. Finally, the deodorizing performance test results of the yarn fabrics prepared in Examples 1 and 7 showed that the herbal antibacterial and deodorizing polyester fiber fabric in Example 7 had basically no difference in the reduction rate of ammonia and isovaleric acid after the coating agent 2 was replaced.

[0109] 2. Antibacterial rate: According to the national standard GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3 Oscillation method", quantitative antibacterial test was carried out, and the antibacterial performance was compared after 100 times of washing. The washing method refers to GB / T20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3 Oscillation method 10.1.2 Washing procedure".

[0110] Table 2 Antibacterial performance test results of yarn fabrics of Examples 1-7 and Comparative Examples 1-3

[0111]

[0112] As can be seen from Table 2, the antibacterial performance test results of the yarn fabrics prepared in Examples 1-2 and Comparative Examples 1-3 found that increasing the amount of coating agent can improve the antibacterial rate of the fabric after washing 100 times. However, when the amount is too large, the antibacterial rate of the fabric after washing 100 times actually decreases. At the same time, the antibacterial performance test results of the yarn fabrics prepared in Examples 1 and 3 found that increasing the amount of herbal antibacterial and deodorizing particles added can significantly improve the antibacterial effect of the fabric after washing 100 times. Within a certain range, the greater the amount of herbal antibacterial and deodorizing particles added, the more obvious the antibacterial effect of the herbal antibacterial and deodorizing polyester fiber. Then, the antibacterial performance test results of the yarn fabrics prepared in Examples 1, 4, and 5 found that at the same addition amount, the yarn fabric with lavender extract added had the best antibacterial effect. Among them, the antibacterial performance test results of the yarn fabrics prepared in Example 1 and Example 6 showed that the herbal antibacterial and deodorizing polyester fiber fabric prepared using a Y-type spinneret had a significantly better antibacterial effect than the fabric prepared using a circular spinneret after washing 100 times. Finally, the antibacterial performance test results of the yarn fabrics prepared in Example 1 and Example 7 showed that the herbal antibacterial and deodorizing polyester fiber fabric prepared after replacing the coating agent 2 had no significant change in its antibacterial effect after washing 100 times.

[0113] Finally, it should be noted that although the above embodiments have been described in the text of the specification of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the text of the specification of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A herbal antibacterial and deodorizing polyester masterbatch, characterized in that: The herbal antibacterial and deodorizing polyester masterbatch includes the following components: polyester PET, an antioxidant, a dispersant and herbal antibacterial and deodorizing particles; the components of the herbal antibacterial and deodorizing particles include a first coating agent, a second coating agent and herbal extract powder, the first coating agent and the second coating agent form a coating layer on the surface of the herbal extract powder, the first coating agent is an oil-soluble coating agent, and the second coating agent is an oil-insoluble coating agent.

2. The herbal antibacterial and deodorizing polyester masterbatch according to claim 1, characterized in that: The herbal antibacterial and deodorizing particles include the following components in percentage by mass: 55-70% of herbal extract powder, 15-25% of a first coating agent, 15-20% of a second coating agent, and 0.5-1% of a modifier.

3. The herbal antibacterial and deodorizing polyester masterbatch according to claim 1, characterized in that: The particle size of the herbal antibacterial and deodorizing particles is 300-500 nm.

4. The herbal antibacterial and deodorizing polyester masterbatch according to claim 1, characterized in that: The first coating agent is paraffin.

5. The herbal antibacterial and deodorizing polyester masterbatch according to claim 1, characterized in that: The second coating agent includes one or more of silicon dioxide, calcium carbonate, and talc.

6. The herbal antibacterial and deodorizing polyester masterbatch according to claim 1, characterized in that: The particle size of the polyester PET is 45-60 meshes, and the specific viscosity is 0.65-0.70 dl / g.

7. The herbal antibacterial and deodorizing polyester masterbatch according to claim 1, characterized in that: The herbal antibacterial and deodorizing polyester masterbatch comprises the following components in parts by weight: 45 to 70 parts by weight of polyester PET, 0.5 to 1 parts by weight of antioxidant, 0.5 to 1 parts by weight of dispersant, and 30 to 55 parts by weight of herbal antibacterial and deodorizing particles.

8. A method for preparing herbal antibacterial and deodorizing polyester masterbatch, characterized in that: The method comprises the following steps: uniformly mixing the components described in any one of claims 1 to 7 and adding the mixture into a twin-screw extruder to perform melt extrusion granulation to obtain the herbal antibacterial and deodorizing polyester masterbatch.

9. A method for preparing herbal antibacterial and deodorizing polyester fiber, characterized in that: The method comprises the following steps: melt-blending 85% to 95% of polyester PET and 5 to 15% of the herbal antibacterial and deodorizing polyester masterbatch according to any one of claims 1 to 7, spinning and oiling to obtain the herbal antibacterial and deodorizing polyester fiber.

10. A herbal antibacterial deodorizing polyester fiber, characterized in that: The herbal antibacterial and deodorizing polyester fiber is prepared by the preparation method described in claim 9.

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