A phase change energy temperature regulating fiber masterbatch and fat burning fabric thereof

Abstract

The present invention relates to the field of functional masterbatch materials, and specifically to a phase change energy temperature regulating fiber masterbatch and a fat burning fabric thereof. A phase change energy temperature regulating fiber masterbatch is formed by melt extrusion and granulation of a composite phase change material and polyethylene terephthalate chips; and a fat burning fabric is prepared by melt spinning, network compounding, and weaving of a phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips. The present invention introduces microencapsulated phase change materials and high thermal conductivity fillers. During the melt extrusion process, the microencapsulated phase change materials and high thermal conductivity fillers can be evenly dispersed in the matrix material to form a stable fiber masterbatch, forming an efficient thermal conductive structure, and providing excellent thermal regulation performance. At the same time, microencapsulation can improve the stability and dispersibility of the phase change material. The fat burning fabric is made by melt spinning and weaving the fiber masterbatch, thereby improving the thermal conductivity of the product and achieving a sustained fat burning effect.

Description

Technical Field

[0001] The present invention relates to the field of functional masterbatch materials, and in particular to a phase change energy temperature regulating fiber masterbatch and a fat burning fabric thereof. Background Art

[0002] Phase change materials are a common type of latent heat storage material. They can absorb and release heat within a specific temperature range by undergoing phase change. Phase change fibers are a new type of functional fiber material with intelligent temperature regulation capabilities obtained by combining this material with fibers. They are widely used in civilian clothing such as thermal underwear and sportswear, and improve the comfort of clothing fabrics. The corresponding fabrics are usually made by melt-extruding phase change materials and polymer chips to make masterbatches, which are then melt-spun and woven. Phase change materials are divided into organic phase change materials and inorganic phase change materials. In the textile field, inorganic phase change materials are usually used because of their hardness, which can wear the spinning components and affect spinnability.

[0003] However, organic phase change materials usually have a low thermal conductivity, which makes the corresponding phase change fibers have disadvantages such as slow heat transfer and slow temperature adjustment rate, which is slightly insufficient in application scenarios with high thermal management requirements, such as fat burning underwear; and conventional improvement methods such as encapsulating phase change materials or capsule structures also have the problem of poor stability in the melt spinning process, and fat burning underwear products usually have built-in chips implanted to monitor the temperature of the skin surface in real time and intelligently adjust the phase change process of the phase change material according to temperature changes to improve the temperature adjustment rate. This places high demands on the temperature sensitivity and automatic temperature adjustment function of the fabric. In addition, people's demand for fat metabolism also places high demands on the fat burning effect of underwear fabrics. Therefore, the present invention provides a phase change energy temperature regulating fiber masterbatch and its fat burning fabric to solve the above problems. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a phase change energy temperature regulating fiber masterbatch and a fat burning fabric thereof.

[0005] A phase change energy temperature regulating fiber masterbatch is prepared by melt extrusion and granulation of a composite phase change material and polyethylene terephthalate chips. The preparation method of the phase change energy temperature regulating fiber masterbatch comprises the following steps:

[0006] (1) The modified attapulgite and the high thermal conductivity filler are mixed and ball-milled for 1-3 hours to obtain a composite carrier, the microencapsulated phase change material is added and mixed, and vacuum adsorption is carried out at 80-90° C. for 10-12 hours to obtain a composite phase change material;

[0007] (2) The composite phase change material and polyethylene terephthalate chips are blended in a mass ratio of 5-20:80-95, melt-extruded using a twin-screw extruder at an extrusion temperature of 200-220°C, and pelletized after cooling to obtain a phase change energy temperature regulating fiber masterbatch.

[0008] Furthermore, the mixed mass ratio of the modified attapulgite and the high thermal conductivity filler is 19-20:0-1.

[0009] Furthermore, the modified attapulgite is modified by acid activation, and the acid solution used is 0.8-1.2 mol / L hydrochloric acid.

[0010] Furthermore, the high thermal conductivity filler is surface-modified carbon nanotubes or boron nitride nanosheets.

[0011] Furthermore, the surface modification method includes oxidation treatment or grafting functional groups.

[0012] Furthermore, the microencapsulated phase change material includes a core material and a shell material, the core material is a mixture of paraffin and polyethylene glycol or a mixture of paraffin and fatty acid, and the shell material is a silica shell layer formed by a sol-gel method or a polymer shell layer formed by an emulsion polymerization method.

[0013] Furthermore, the mass ratio of the paraffin wax to polyethylene glycol is 1-3:1-3, and the mass ratio of the paraffin wax to fatty acid is 1-3:1-3; the paraffin wax is phase-change paraffin, and the fatty acid is stearic acid or palmitic acid.

[0014] Furthermore, the paraffin wax and polyethylene glycol or the paraffin wax and fatty acid are mixed, stirred at 80-100° C. for 30-40 minutes, and then mixed with the composite carrier.

[0015] A fat-burning fabric is prepared by melt spinning, network compounding, and weaving phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips. The preparation method of the fat-burning fabric includes the following steps:

[0016] (1) Using melt spinning, the phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips are spun into phase change energy temperature regulating fibers in a mass ratio of 1:1-3;

[0017] (2) The phase change energy temperature regulating fiber is network-compounded and woven into a fabric by machine weaving or knitting to obtain a fat burning fabric.

[0018] Furthermore, the spinning tunnel of the melt spinning has a diameter of 30-50 cm and a length of 3-6 m, a spinning temperature of 190-210° C., and a spinning speed of 2500-3000 m / min.

[0019] The beneficial effects achieved by the present invention are as follows: 1. By introducing microencapsulated phase change materials and high thermal conductivity fillers, the present invention can be uniformly dispersed in the matrix material during the melt extrusion process to form a stable phase change energy temperature regulating fiber masterbatch, forming a highly efficient thermal conductive structure that can meet higher thermal management requirements and provide excellent thermal regulation performance. At the same time, microencapsulation can improve the stability and dispersibility of the phase change material; the masterbatch is melt-spun into a phase change energy temperature regulating fiber with a unique composite structure and material properties. The microencapsulated phase change material can absorb and release heat when body temperature changes, maintain a stable body temperature environment, activate brown adipose tissue, and promote fat metabolism; the highly thermal conductive filler forms an efficient heat conduction network that can quickly dissipate heat generated by the human body, prevent heat accumulation, and reduce fat accumulation caused by overheating. This stable body temperature regulation mechanism can improve wearing comfort and activate fat metabolism-related mechanisms, such as the activation of brown adipose tissue and the lipolysis of adipocytes, thereby achieving a sustained fat burning effect. Finally, the fabric is woven into a fat-burning fabric, thereby improving the thermal conductivity and comfort of the product.

[0020] 2. The present invention utilizes the unique porous structure of attapulgite to provide a large number of internal voids for the composite material, increase the number of heat conduction paths, and facilitate the rapid transfer of heat within the material. At the same time, it increases the adsorption capacity of the phase change material and improves the thermal energy storage capacity of the material. By ball milling, part of the lattice structure of the attapulgite is destroyed, the bonding force between the high thermal conductivity filler and the attapulgite is enhanced, the internal connectivity of the material is improved, and the efficiency of heat transfer within the material is enhanced.

[0021] 3. The present invention reduces the agglomeration of the phase change material in the matrix through surface modification of the microencapsulated phase change material, avoids the formation of local overheating or cold spots, and thus improves the thermal regulation performance of the overall material. The evenly distributed microencapsulated phase change material can also enhance the mechanical properties of the composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a flow chart of the preparation method of the fat-burning fabric used in the present invention. DETAILED DESCRIPTION

[0023] The following examples are provided for a better understanding of the present invention, but are not intended to limit the present invention. In addition, in the following examples, unless otherwise specified, the experimental methods used are conventional methods, and the materials and reagents used can be purchased from biological or chemical reagent companies.

[0024] The present invention provides a fat-burning fabric, which is prepared by melt spinning, network compounding, and weaving of phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips; the phase change energy temperature regulating fiber masterbatch is prepared by melt extrusion and granulation of composite phase change material and polyethylene terephthalate chips;

[0025] Preparation method of fat burning fabric, such as Figure 1 As shown, the following steps are included:

[0026] (1) Modified attapulgite and high thermal conductive filler were mixed in a mass ratio of 19-20:0-1 and ball-milled for 1-3 hours to obtain a composite carrier, microencapsulated phase change material was added and mixed, and vacuum adsorption was carried out at 80-90°C for 10-12 hours to obtain a composite phase change material;

[0027] The high thermal conductivity filler is a surface-modified carbon nanotube or boron nitride nanosheet, and the surface modification method includes oxidation treatment or grafting of functional groups; the microencapsulated phase change material includes a core material and a shell material, the core material is a mixture of paraffin wax and polyethylene glycol or a mixture of paraffin wax and fatty acid, the mass ratio of paraffin wax to polyethylene glycol is 1-3:1-3, and the mass ratio of the paraffin wax to the fatty acid is 1-3:1-3; the paraffin wax is a phase change paraffin, and the fatty acid is stearic acid or palmitic acid; the shell material is a silica shell layer formed by a sol-gel method or a polymer shell layer formed by an emulsion polymerization method;

[0028] (2) blending the composite phase change material and polyethylene terephthalate chips in a mass ratio of 5-20:80-95, using a twin-screw extruder for melt extrusion at an extrusion temperature of 200-220°C, and pelletizing after cooling to obtain a phase change energy temperature regulating fiber masterbatch;

[0029] (3) melt spinning is used to spin phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips in a mass ratio of 1:1-3 into phase change energy temperature regulating fiber, the spinning tunnel diameter of the melt spinning is 30-50 cm, the length is 3-6 m, the spinning temperature is 190-210 ° C, and the spinning speed is 2500-3000 m / min;

[0030] (4) The phase change energy temperature regulating fiber is network-compounded and woven into a fabric by machine weaving or knitting to obtain a fat burning fabric.

[0031] In the following examples, the modified attapulgite was modified by acid activation with 1 mol / L hydrochloric acid; paraffin wax and polyethylene glycol or paraffin wax and fatty acid were mixed, stirred at 80°C for 30 minutes, and then mixed with the composite carrier;

[0032] A method for forming a silica shell layer by a sol-gel method: using ethyl orthosilicate and ammonia water to carry out a sol-gel reaction in water to form a silica shell layer to cover the core material;

[0033] The method of forming a polymer shell layer by emulsion polymerization is as follows: the core material is dispersed in the emulsion, and the polymer shell layer is formed by polymerization reaction to cover the core material.

[0034] Example 1: A method for preparing a fat-burning fabric, comprising the following steps:

[0035] (1) Modified attapulgite and high thermal conductivity filler were mixed in a mass ratio of 19:1 and ball-milled for 1 h to obtain a composite carrier, to which microencapsulated phase change material was added and mixed, and vacuum adsorption was performed at 85°C for 11 h to obtain a composite phase change material;

[0036] The high thermal conductivity filler is surface-modified carbon nanotubes, and the surface modification method is oxidation treatment; the core material of the microencapsulated phase change material is a mixture of paraffin wax and polyethylene glycol in a mass ratio of 2:2; the shell material is a silica shell layer formed by a sol-gel method;

[0037] (2) The composite phase change material and polyethylene terephthalate chips were blended in a mass ratio of 10:90, melt-extruded using a twin-screw extruder at an extrusion temperature of 210°C, and pelletized after cooling to obtain a phase change energy temperature regulating fiber masterbatch;

[0038] (3) Phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips were spun into phase change energy temperature regulating fiber in a mass ratio of 1:2 by melt spinning. The spinning tunnel diameter of melt spinning was 40 cm and the length was 5 m. The spinning temperature was 200 °C and the spinning speed was 2700 m / min.

[0039] (4) The phase change energy temperature regulating fiber is network-compounded and the phase change energy temperature regulating fiber is woven into a fabric by machine to obtain a fat burning fabric.

[0040] Example 2: A method for preparing a fat-burning fabric, comprising the following steps:

[0041] (1) Modified attapulgite and high thermal conductive filler were mixed in a mass ratio of 19.5:0.5 and ball-milled for 1 h to obtain a composite carrier, to which microencapsulated phase change material was added and mixed, and vacuum adsorption was carried out at 88°C for 10 h to obtain a composite phase change material;

[0042] The high thermal conductivity filler is a surface-modified boron nitride nanosheet, and the surface modification method is grafting functional groups (amino groups); the core material of the microencapsulated phase change material is a mixture of paraffin wax and stearic acid in a mass ratio of 1:3; the shell material is a polymer shell layer formed by emulsion polymerization;

[0043] (2) The composite phase change material and polyethylene terephthalate chips were blended in a mass ratio of 15:85, melt-extruded using a twin-screw extruder at an extrusion temperature of 215°C, and pelletized after cooling to obtain a phase change energy temperature regulating fiber masterbatch;

[0044] (3) Phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips were spun into phase change energy temperature regulating fiber in a mass ratio of 1:12 by melt spinning. The spinning tunnel diameter of melt spinning was 35 cm and the length was 5 m. The spinning temperature was 195 ° C and the spinning speed was 2600 m / min.

[0045] (4) The phase change energy temperature regulating fiber is network-compounded and knitted into a fabric to obtain a fat burning fabric.

[0046] Example 3: A method for preparing a fat-burning fabric, comprising the following steps:

[0047] (1) Modified attapulgite and high thermal conductive filler were mixed in a mass ratio of 19.8:0.2 and ball-milled for 1 h to obtain a composite carrier, to which microencapsulated phase change material was added and mixed, and vacuum adsorption was carried out at 85°C for 11 h to obtain a composite phase change material;

[0048] The high thermal conductivity filler is a surface-modified carbon nanotube, and the surface modification method is grafting functional groups (carboxyl groups); the core material of the microencapsulated phase change material is a mixture of paraffin wax and palmitic acid in a mass ratio of 3:1; the shell material is a silica shell layer formed by a sol-gel method;

[0049] (2) The composite phase change material and polyethylene terephthalate chips were blended in a mass ratio of 20:80, melt-extruded using a twin-screw extruder at an extrusion temperature of 220°C, and pelletized after cooling to obtain a phase change energy temperature regulating fiber masterbatch;

[0050] (3) Phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips were spun into phase change energy temperature regulating fiber in a mass ratio of 1:3 by melt spinning. The spinning tunnel diameter of melt spinning was 50 cm and the length was 6 m. The spinning temperature was 210 °C and the spinning speed was 2800 m / min.

[0051] (4) The phase change energy temperature regulating fiber is network-compounded and the phase change energy temperature regulating fiber is woven into a fabric by machine to obtain a fat burning fabric.

[0052] Comparative Example 1: Compared with Example 1, this comparative example uses phase change paraffin to replace the encapsulated phase change material.

[0053] Comparative Example 2: Compared with Example 1, this comparative example does not use a high thermal conductivity filler, and the excess mass is added to the modified attapulgite.

[0054] Performance testing: 1. The fat-burning fabrics of Examples 1-3 and Comparative Examples 1-2 were tested for thermal stability (thermogravimetric analysis), phase transition temperature and phase transition enthalpy (differential scanning calorimetry), mechanical properties (tensile strength, elongation at break), comfort performance (breathability), and temperature regulation performance (temperature regulation ability). The test results are shown in Tables 1 to 3.

[0055] Table 1 Thermal stability test results of fat burning fabrics

[0056]

[0057]

[0058] Table 2 Test results of phase change temperature and phase change enthalpy of fat burning fabrics

[0059]

[0060] Table 3 Test results of mechanical properties, comfort and temperature regulation performance of fat burning fabrics

[0061]

[0062] 2. Five volunteers were selected and made into underwear using the fat-burning fabric of Example 1 and ordinary fabric of the same specifications. Initial body temperatures were measured and recorded while the volunteers wore ordinary underwear at rest. The volunteers were then replaced with underwear made from the fat-burning fabric of Example 1. An infrared thermometer was used to measure body temperatures during different activity states: resting for 10 minutes; light exercise for 10 minutes; moderate exercise, such as jogging, for 10 minutes; and resting for 10 minutes during recovery. The initial and final body temperatures of each volunteer were recorded for each activity state, and the temperature change was calculated.

[0063] Table 4 Fat burning effect test results of the fat burning fabric of Example 1

[0064] Volunteer Number Activity Status Initial body temperature (℃) Final body temperature (℃) Body temperature changes (℃) 1 Rest 36.5 36.6 +0.1 1 light exercise 36.6 37.0 +0.4 1 moderate exercise 37.0 37.5 +0.5 2 Rest 36.4 36.5 +0.1 2 light exercise 36.5 37.1 +0.6 2 moderate exercise 37.1 37.6 +0.5 3 Rest 36.6 36.7 +0.1 3 light exercise 36.7 37.2 +0.5 3 moderate exercise 37.2 37.8 +0.6 4 Rest 36.5 36.6 +0.1 4 light exercise 36.6 37.1 +0.5 4 moderate exercise 37.1 37.7 +0.6 5 Rest 36.4 36.5 +0.1 5 light exercise 36.5 37.0 +0.5 5 moderate exercise 37.0 37.6 +0.6

[0065] It can be seen from Table 4 that, compared with ordinary underwear, the underwear made of the fat-burning fabric of the present invention has a good fat-burning effect, can promote the dissipation of body heat and increase energy consumption.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A phase change energy temperature regulating fiber masterbatch, characterized in that: The preparation method of phase change energy temperature regulating fiber masterbatch is made by melt extrusion and granulation of composite phase change material and polyethylene terephthalate chips, and includes the following steps: (1) The modified attapulgite and the high thermal conductivity filler are mixed and ball-milled for 1-3 hours to obtain a composite carrier, the microencapsulated phase change material is added and mixed, and vacuum adsorption is carried out at 80-90°C for 10-12 hours to obtain a composite phase change material; (2) The composite phase change material and polyethylene terephthalate chips are blended in a mass ratio of 5-20:80-95, melt-extruded using a twin-screw extruder at an extrusion temperature of 200-220°C, and pelletized after cooling to obtain a phase change energy temperature regulating fiber masterbatch; the modified attapulgite and the high thermal conductivity filler are mixed in a mass ratio of 19-20:0-1; the modified attapulgite is modified by acid activation, and the acid solution used is 0.8-1.2 mol / L hydrochloric acid; the high thermal conductivity filler is a surface-modified carbon nanotube or boron nitride nanosheet; the surface modification method includes oxidation treatment or grafting functional groups; the microencapsulated phase change material includes a core material and a shell material, the core material is a mixture of paraffin and polyethylene glycol or a mixture of paraffin and fatty acid, and the shell material is a silica shell layer formed by a sol-gel method or a polymer shell layer formed by an emulsion polymerization method.

2. The phase change energy temperature regulating fiber masterbatch according to claim 1, characterized in that: The mass ratio of the paraffin wax to polyethylene glycol is 1-3:1-3, and the mass ratio of the paraffin wax to fatty acid is 1-3:1-3; the paraffin wax is phase-change paraffin, and the fatty acid is stearic acid or palmitic acid.

3. The phase change energy temperature regulating fiber masterbatch according to claim 2, characterized in that: The paraffin wax and polyethylene glycol or the paraffin wax and fatty acid are mixed, stirred at 80-100° C. for 30-40 minutes, and then mixed with the composite carrier.

4. A fat burning fabric, characterized in that: The fat-burning fabric is prepared by melt spinning, network compounding, and weaving of the phase change energy temperature regulating fiber masterbatch according to any one of claims 1 to 3 and polyethylene terephthalate chips; the preparation method comprises the following steps: (1) Phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips are spun into phase change energy temperature regulating fiber in a mass ratio of 1:1-3 by melt spinning; (2) The phase change energy temperature regulating fiber is network-compounded and woven into a fabric by machine weaving or knitting to obtain a fat burning fabric.

5. The fat burning fabric according to claim 4, characterized in that: The diameter of the spinning tunnel of the melt spinning is 30-50 cm, the length is 3-6 m, the spinning temperature is 190-210° C., and the spinning speed is 2500-3000 m / min.

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