Antibacterial and anti-mite multifunctional fiber, preparation method thereof, and application in mattresses

Abstract

The invention relates to the field of fiber technology, and discloses an antibacterial and anti-mite multifunctional fiber, a preparation method thereof, and an application in a mattress. The multifunctional fiber is prepared by extrusion and melt spinning processes using PET slices as a main raw material, supplemented with antibacterial functional additive components, antioxidants, lubricants and other additives. Since the antibacterial additive component structure has a similar structure to a PET molecular chain, they have good compatibility with each other and can form a mutually entangled micro-molecular structure with a PET matrix during the melt extrusion process, thereby avoiding the precipitation and migration phenomenon of the antibacterial functional additive component, and using the broad-spectrum antibacterial effect of curcumin to give polyester fiber good antibacterial performance. In addition, the antibacterial functional additive component structure also contains a large number of extremely hydrophobic perfluorinated chain segments, which can form a super-hydrophobic layer on the surface of the polyester fiber, effectively avoiding the water vapor adhesion phenomenon caused by high moisture, thereby facilitating the reduction of bacterial growth.

Description

Technical Field

[0001] The invention relates to the technical field of fibers, and in particular to an antibacterial and anti-mite multifunctional fiber, a preparation method thereof, and application thereof in a mattress. Background Art

[0002] With the improvement of living standards and the enhancement of health awareness, people's requirements for home environment are getting higher and higher. As one of the indispensable furniture in daily life, the material and performance of mattresses are directly related to people's sleep quality and physical health. Mattresses mainly include filling layers and fabric layers. The filling layer of mattresses usually adopts a multi-layer design to provide sufficient support and comfort, while the fabric layer is wrapped on the surface of the filling layer to play a decorative and protective role. Therefore, the fabric used to make mattresses needs to have good wear resistance and mechanical properties to play a good protective role. Polyester fiber has the advantages of high strength, high modulus, good wear resistance, and strong wrinkle resistance, so it can be used as the main raw material for the mattress fabric layer.

[0003] However, in some areas in the south, due to heavy humidity and the long-term dark environment of mattresses, bacteria are very easy to breed. Bacteria will secrete organic matter during their growth, which will provide a favorable environment for the growth of mites. The activity of mites is conducive to the spread and reproduction of bacteria, thus creating a vicious circle. People who sleep on mattresses containing a large number of bacteria and mites for a long time will pose a potential threat to their health.

[0004] Since polyester fiber has poor antibacterial properties, its application in mattress fabric layers is greatly limited. Therefore, it is urgent to modify polyester fiber for antibacterial properties. The existing technology mainly adds antibacterial agents during the preparation of polyester fiber to give polyester fiber a good antibacterial effect. However, conventional antibacterial agents such as silver-based antibacterial agents are heavy metals, which are not only expensive, but also pose potential risks to human health. Small molecule antibacterial agents will produce serious migration and precipitation during use, making it difficult to ensure the long-term antibacterial properties of polyester fiber. Based on this, the present invention provides a polyester fiber with good long-term antibacterial properties, which can solve the problems of the existing technology. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides an antibacterial and anti-mite multifunctional fiber, a preparation method thereof, and application thereof in a mattress.

[0007] (II) Technical solution

[0008] A method for preparing an antibacterial and anti-mite multifunctional fiber, wherein the multifunctional fiber is made of the following raw materials in parts by weight: 80-95 parts of PET chips, 1-3.5 parts of antibacterial functional additive components, 2-3 parts of antioxidants, 1-4 parts of lubricants, 4-5 parts of fillers, and 3-6 parts of silane coupling agents;

[0009] The preparation method comprises the following steps:

[0010] The first step is to weigh each raw material according to the weight and set aside;

[0011] Step 2: Place all raw materials in a mixer, stir and mix them mechanically, then transfer them to a screw extruder, control the temperature to 270-290°C, the screw speed to 100-120rpm, and melt extrude to form pellets;

[0012] The third step is to feed the pellets into the melt spinning machine, control the temperature to 260-280℃, the screw speed to 300-500r / min, the winding speed to 200-300m / min, and after melt spinning, control the drafting multiple to 3-4 times, carry out the drafting process, and finally perform heat setting treatment at a temperature of 110-120℃ for 30-60min.

[0013] As a further solution of the present invention, the preparation method of the antibacterial functional additive component is as follows:

[0014] Step 1, add 1H,1H,12H,12H-perfluoro-1,12-dodecanediol to tetrahydrofuran, start stirring after adding, mix well, place in an ice bath, then add a bridging reagent, remove from the ice bath after adding, stir at room temperature for 8-12 hours, add an acid binding agent, continue stirring for 2-4 hours, evaporate the solvent, collect the product, and obtain an intermediate polymer material;

[0015] Step 2: Mix the intermediate polymer material with toluene, stir to form a uniform liquid, then add curcumin to the liquid. After the addition is completed, under nitrogen protection, gradually increase the temperature to 60-70°C, and add the catalyst. After the addition is completed, keep the temperature for 6-9 hours to obtain the antibacterial functional additive component.

[0016] As a further embodiment of the present invention, in step 1, the molar ratio of the 1H,1H,12H,12H-perfluoro-1,12-dodecanediol to the bridging reagent is 1:1.

[0017] As a further embodiment of the present invention, in step 1, the bridging reagent is 5-isocyanate isophthaloyl chloride.

[0018] As a further embodiment of the present invention, in step 1, the acid binding agent is triethylamine or pyridine.

[0019] As a further embodiment of the present invention, in step 2, the mass ratio of the intermediate polymer material to curcumin is 1:0.1-0.2.

[0020] As a further embodiment of the present invention, in step 2, the catalyst is any one of dibutyltin diacetate, stannous octoate or dibutyltin dilaurate.

[0021] In the above technical scheme, 1H,1H,12H,12H-perfluoro-1,12-dodecanediol is firstly used as a raw material, and 5-isocyanate isophthaloyl chloride is used as a bridging agent. Firstly, under room temperature conditions, the condensation reaction of acyl chloride and hydroxyl groups can be continuously connected and polymerized to form a macromolecular intermediate polymer connected by ester bonds. Then, under the action of a tin catalyst, the isocyanate group contained in the molecular structure of the intermediate polymer can further undergo an amine esterification reaction with curcumin, thereby introducing the natural spectrum antibacterial agent curcumin into the molecular chain to obtain an antibacterial functional added component.

[0022] As a further embodiment of the present invention, the antioxidant is a mixture of lignin and antioxidant 168, with a mass ratio of 1:0.3-0.5; the lubricant is zinc stearate or calcium stearate; the filler is any one of montmorillonite, talc or calcium carbonate; and the silane coupling agent is any one of KH550, KH560 or KH570.

[0023] An antibacterial and anti-mite multifunctional fiber is prepared by adopting the preparation method.

[0024] The invention discloses an application of antibacterial and anti-mite multifunctional fiber, and the antibacterial and anti-mite multifunctional fiber is applied in the manufacture of mattresses.

[0025] 3. Beneficial technical effects

[0026] The antibacterial function added component structure prepared by the present invention contains a large number of ester bonds, and has a similar structure to the PET molecular chain, so it has good compatibility with the PET matrix, so it can form a mutually entangled micro-molecular structure with the PET matrix during the melt extrusion process, thereby avoiding the precipitation and migration phenomenon of the antibacterial function added component. In addition, since the isocyanate group has a high reactivity, it can make the formed macromolecular substance structure contain a large number of curcumin structures, so that the antibacterial function added component prepared by adding a small amount can achieve the effect of greatly enhancing the antibacterial performance of the fiber. In addition, the antibacterial function added component structure also contains a large number of highly hydrophobic perfluoro chain segments, so it can give the polyester fiber super strong hydrophobicity, forming a super hydrophobic layer on its surface, which can effectively avoid the water vapor adhesion phenomenon caused by large moisture, thereby helping to reduce the growth of bacteria. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 Infrared test image of components added for antibacterial function. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below. Preferred embodiments of the present invention are given below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Example

[0030] An antibacterial and anti-mite multifunctional fiber, the multifunctional fiber is made of the following raw materials in parts by weight: 80 parts of PET chips, 1 part of antibacterial functional additive component, 2 parts of antioxidant, 1 part of lubricant zinc stearate, 4 parts of montmorillonite, and 3 parts of KH550;

[0031] The preparation method of the multifunctional fiber comprises the following steps:

[0032] The first step is to weigh each raw material according to the weight and set aside;

[0033] Step 2: Place all raw materials in a mixer, mechanically stir and mix them, then transfer them to a screw extruder, control the temperature to 270°C, the screw speed to 100 rpm, and melt extrude to form pellets;

[0034] The third step is to feed the pellets into the melt spinning machine, control the temperature to 260°C, the screw speed to 300r / min, and the winding speed to 200m / min. After melt spinning, control the drafting multiple to 4 times, carry out the drafting process, and finally perform heat setting treatment at a temperature of 110°C for 60 minutes.

[0035] The antioxidant is a mixture of lignin and antioxidant 168, with a mass ratio of 1:0.4. Example

[0036] An antibacterial and anti-mite multifunctional fiber, the multifunctional fiber is made of the following raw materials in parts by weight: 90 parts of PET slices, 3 parts of antibacterial functional additive components, 3 parts of antioxidants, 2 parts of calcium stearate, 5 parts of talc, and 5 parts of KH560;

[0037] The preparation method of the multifunctional fiber comprises the following steps:

[0038] The first step is to weigh each raw material according to the weight and set aside;

[0039] Step 2: Place all raw materials in a mixer, mechanically stir and mix them, then transfer them to a screw extruder, control the temperature to 280°C, the screw speed to 120rpm, and melt extrude to form pellets;

[0040] The third step is to feed the pellets into the melt spinning machine, control the temperature to 270°C, the screw speed to 400r / min, and the winding speed to 300m / min. After melt spinning, control the drafting multiple to 4 times, carry out the drafting process, and finally perform heat setting treatment at 120°C for 40 minutes.

[0041] The antioxidant is a mixture of lignin and antioxidant 168, with a mass ratio of 1:0.4. Example

[0042] An antibacterial and anti-mite multifunctional fiber, the multifunctional fiber is made of the following raw materials in parts by weight: 95 parts of PET chips, 3.5 parts of antibacterial functional additive components, 3 parts of antioxidants, 4 parts of zinc stearate, 5 parts of calcium carbonate, and 6 parts of KH550;

[0043] The preparation method of the multifunctional fiber comprises the following steps:

[0044] The first step is to weigh each raw material according to the weight and set aside;

[0045] Step 2: Place all raw materials in a mixer, mechanically stir and mix them, then transfer them to a screw extruder, control the temperature to 290°C, the screw speed to 120rpm, and melt extrude to form pellets;

[0046] The third step is to feed the pellets into the melt spinning machine, control the temperature to 280°C, the screw speed to 500r / min, and the winding speed to 300m / min. After melt spinning, control the drafting multiple to 4 times, carry out the drafting process, and finally perform heat setting treatment at 120°C for 30 minutes.

[0047] The antioxidant is a mixture of lignin and antioxidant 168, with a mass ratio of 1:0.4.

[0048] The antibacterial functional additive components in the above embodiments are prepared by the following method:

[0049] Step 1, add 0.3g of 1H,1H,12H,12H-perfluoro-1,12-dodecanediol to tetrahydrofuran, start stirring after adding, mix well, place in an ice bath, and then add 0.13g of 5-isocyanate isophthaloyl chloride. After the addition is complete, remove from the ice bath, stir at room temperature for 9h, add 0.02g of pyridine, continue stirring for 3h, evaporate the solvent, collect the product, and obtain an intermediate polymer material;

[0050] Step 2: Mix 1.2 g of the intermediate polymer with toluene, stir to form a uniform liquid, then add 0.2 g of curcumin to the liquid. After the addition is completed, under nitrogen protection, gradually increase the temperature to 65°C, and add 0.01 g of stannous octoate. After the addition is completed, keep the reaction warm for 8 hours to obtain the antibacterial functional additive component.

[0051] The antibacterial functional additive components were made into potassium bromide tablets and tested using a Fourier transform infrared spectrometer. The spectral wavenumber test range was 4000cm -1 ~500cm -1 , the test results are as follows Figure 1 As shown, 3311cm -1 The absorption peak at 3000-3100 cm is the characteristic absorption peak of the hydroxyl group in the curcumin structure that does not participate in the reaction. -1 The absorption peak at 1753 cm is the CH absorption peak of the benzene ring skeleton. -1 The absorption peak at 1696 cm is the C=O absorption peak of the ester group. -1 The absorption peak at 1293 cm is the C=O absorption peak of the amine ester group. -1 The absorption peak appearing at is the characteristic absorption peak of CF.

[0052] Comparative Example 1

[0053] An antibacterial and anti-mite multifunctional fiber, the multifunctional fiber is made of the following raw materials in parts by weight: 90 parts of PET slices, 3 parts of curcumin, 3 parts of antioxidant, 2 parts of calcium stearate, 5 parts of talc, and 5 parts of KH560;

[0054] The preparation method of the multifunctional fiber comprises the following steps:

[0055] The first step is to weigh each raw material according to the weight and set aside;

[0056] Step 2: Place all raw materials in a mixer, mechanically stir and mix them, then transfer them to a screw extruder, control the temperature to 280°C, the screw speed to 120rpm, and melt extrude to form pellets;

[0057] The third step is to feed the pellets into the melt spinning machine, control the temperature to 270°C, the screw speed to 400r / min, and the winding speed to 300m / min. After melt spinning, control the drafting multiple to 4 times, carry out the drafting process, and finally perform heat setting treatment at 120°C for 40 minutes.

[0058] The antioxidant is a mixture of lignin and antioxidant 168, with a mass ratio of 1:0.4.

[0059] Test Case

[0060] The fibers in Examples 1 to 3 of the present invention and the comparative example were woven into fabrics, the warp density was controlled to be 42.4 strands / cm, and the weft density was controlled to be 25.6 strands / cm. After the fabric samples were placed in a dark place at room temperature for 3 months, the antibacterial performance was tested according to the standard GB / T20944.3-2008, and the test bacteria were Escherichia coli. The water contact angle test was performed using a TC-A3 automatic contact angle measuring instrument, and the test results were recorded in the following table:

[0061] Antibacterial rate / % Contact angle / ° Example 1 99.5 154 Example 2 99.6 155 Example 3 99.5 155 Comparative Example 1 78.2 111

[0062] Analysis and test results show that polyester fiber fabrics prepared with antibacterial functional additives have excellent antibacterial activity, and a water contact angle greater than 150°. They have a super hydrophobic surface that can prevent water vapor from adhering and avoid providing a favorable environment for microorganisms such as bacteria and mites.

[0063] The antibacterial performance of polyester fiber fabric prepared directly using curcumin as an antibacterial agent decreased significantly after being placed for 3 months. This is because curcumin volatilized and migrated, and the amount added was small, so the antibacterial activity was poor. In addition, since it does not contain a large number of fluorinated hydrophobic segments, it is not super hydrophobic and it is difficult to prevent water vapor from adhering.

[0064] Based on the ideal embodiment of the present invention, through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A method for preparing antibacterial and anti-mite multifunctional fiber, characterized in that: The multifunctional fiber is made of the following raw materials in parts by weight: 80-95 parts of PET chips, 1-3.5 parts of antibacterial functional additive components, 2-3 parts of antioxidants, 1-4 parts of lubricants, 4-5 parts of fillers, and 3-6 parts of silane coupling agents; The preparation method comprises the following steps: The first step is to weigh each raw material according to the weight and set aside; Step 2: Place all raw materials in a mixer, stir and mix them mechanically, then transfer them to a screw extruder, control the temperature to 270-290°C, the screw speed to 100-120rpm, and melt extrude to form pellets; The third step is to feed the pellets into the melt spinning machine, control the temperature to 260-280°C, the screw speed to 300-500r / min, the winding speed to 200-300m / min, and after melt spinning, control the drafting multiple to 3-4 times, perform the drafting process, and finally heat-set at 110-120°C for 30-60min. The preparation method of the antibacterial functional additive component is as follows: Step 1, add 1H,1H,12H,12H-perfluoro-1,12-dodecanediol to tetrahydrofuran, start stirring after adding, mix well, place in an ice bath, then add a bridging reagent, remove from the ice bath after adding, stir at room temperature for 8-12 hours, add an acid binding agent, continue stirring for 2-4 hours, evaporate the solvent, collect the product, and obtain an intermediate polymer material; Step 2: Mix the intermediate polymer material with toluene, stir to form a uniform liquid, then add curcumin to the liquid. After the addition is completed, under nitrogen protection, gradually increase the temperature to 60-70°C, and add the catalyst. After the addition is completed, keep the temperature for 6-9 hours to obtain the antibacterial functional additive component.

2. The method for preparing the antibacterial and anti-mite multifunctional fiber according to claim 1, characterized in that: In step 1, the molar ratio of the 1H,1H,12H,12H-perfluoro-1,12-dodecanediol to the bridging reagent is 1:

1.

3. The method for preparing the antibacterial and anti-mite multifunctional fiber according to claim 1, characterized in that: In step 1, the bridging reagent is 5-isocyanate isophthaloyl chloride.

4. The method for preparing the antibacterial and anti-mite multifunctional fiber according to claim 1, characterized in that: In step 1, the acid binding agent is triethylamine or pyridine.

5. The method for preparing the antibacterial and anti-mite multifunctional fiber according to claim 1, characterized in that: In step 2, the mass ratio of the intermediate polymer material to curcumin is 1:0.1-0.

2.

6. The method for preparing the antibacterial and anti-mite multifunctional fiber according to claim 1, characterized in that: In step 2, the catalyst is any one of dibutyltin diacetate, stannous octoate or dibutyltin dilaurate.

7. The method for preparing the antibacterial and anti-mite multifunctional fiber according to claim 1, characterized in that: The antioxidant is a mixture of lignin and antioxidant 168, with a mass ratio of 1:0.3-0.5; the lubricant is zinc stearate or calcium stearate; the filler is any one of montmorillonite, talc or calcium carbonate; and the silane coupling agent is any one of KH550, KH560 or KH570.

8. An antibacterial and anti-mite multifunctional fiber, characterized in that: The method is prepared according to claim 1.

9. An application of antibacterial and anti-mite multifunctional fiber, characterized in that: The multifunctional fiber prepared by the method for preparing an antibacterial and anti-mite multifunctional fiber according to claim 1 is used in the manufacture of mattresses.

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