Phase-change energy temperature-adjusting fiber master batch and fat-burning fabric thereof

Abstract

The invention relates to the field of functional master batch materials, in particular to a phase-change energy temperature-adjusting fiber master batch and a fat-burning fabric thereof. The phase-change energy temperature-regulating fiber master batch is prepared from a composite phase-change material and polyethylene glycol terephthalate slices through melt extrusion and granulation, the fat-burning fabric is prepared from the phase-change energy temperature-adjusting fiber master batch and polyethylene glycol terephthalate slices through melt spinning, network compounding and weaving processing. By introducing the microencapsulated phase-change material and the high-thermal-conductivity filler, in the melt extrusion process, the microencapsulated phase-change material and the high-thermal-conductivity filler can be uniformly dispersed in the matrix material to form stable fiber master batches, form an efficient thermal-conductivity structure and provide excellent thermal regulation performance; meanwhile, microencapsulation can improve the stability and dispersity of the phase-change material, and the fat-burning fabric is prepared through melt spinning and weaving of fiber master batches, so that the heat-conducting property of the product is improved, and the continuous fat-burning effect is achieved.

Description

Technical Field

[0001] The 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 material is a common latent heat storage material. It can absorb and release heat within a specific temperature range by using its own phase change. Phase change fiber is a new functional fiber material with intelligent temperature regulation ability obtained by combining this material with fiber. It is widely used in the field of civilian clothing such as thermal underwear and sportswear, and improves the comfort of clothing fabrics. The corresponding fabrics are usually made by melt extrusion of phase change material and polymer slices to make masterbatch, which is 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 will wear the spinning components due to their high hardness and will also affect the spinnability, so organic phase change materials are usually used.

[0003] However, organic phase change materials usually have a low thermal conductivity, which makes the corresponding phase change fibers have shortcomings 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 wrapping 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, which 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 deficiencies in the prior art, the object 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 slices. The preparation method of the phase change energy temperature regulating fiber masterbatch comprises the following steps:

[0006] (1) mixing modified attapulgite and high thermal conductivity filler and ball milling for 1-3 hours to obtain a composite carrier, adding microencapsulated phase change material and mixing, and vacuum adsorbing 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 treated by acid activation modification, and the acid solution used is 0.8-1.2 mol / L hydrochloric acid.

[0010] Furthermore, the high thermal conductivity filler is a surface-modified carbon nanotube or boron nitride nanosheet.

[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 of phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate slices; the preparation method of the fat burning fabric comprises the following steps:

[0016] (1) 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;

[0017] (2) The phase change energy temperature regulating fiber is network-compounded, and the phase change energy temperature regulating fiber is woven or knitted into a fabric 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. 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 uniformly dispersed in the matrix material to form a stable phase change energy temperature regulating fiber masterbatch, forming an efficient thermal conductive structure, which 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 the body temperature changes, maintain a stable body temperature environment, activate brown adipose tissue, and promote fat metabolism; the efficient heat conduction network formed by the high thermal conductivity filler can quickly dissipate the 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 fat cells, thereby achieving a continuous 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 heat transfer efficiency 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 uniformly 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 method for preparing the fat burning fabric used in the present invention. DETAILED DESCRIPTION

[0023] The following examples are provided for 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 all 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 slices; the phase change energy temperature regulating fiber masterbatch is prepared by melt extrusion and granulation of composite phase change material and polyethylene terephthalate slices;

[0025] Method for preparing fat burning fabric, such as Figure 1 As shown, the following steps are included:

[0026] (1) The modified attapulgite and the high thermal conductive filler are mixed and ball-milled for 1-3 hours in a mass ratio of 19-20:0-1 to obtain a composite carrier, and the microencapsulated phase change material is added and mixed, and vacuum adsorbed at 80-90° C. for 10-12 hours to obtain a composite phase change material;

[0027] Wherein, 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 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, the mass ratio of paraffin to polyethylene glycol is 1-3:1-3, and the mass ratio of paraffin to fatty acid is 1-3:1-3; the paraffin 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 the phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate slices in a mass ratio of 1:1-3 into phase change energy temperature regulating fibers, 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 the phase change energy temperature regulating fiber is woven or knitted into a fabric to obtain a fat burning fabric.

[0031] In the following examples, the modified attapulgite was treated by acid activation modification 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 min, 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] Embodiment 1: A method for preparing a fat burning fabric, comprising the following steps:

[0035] (1) The modified attapulgite and the high thermal conductive filler were mixed in a mass ratio of 19:1 and ball-milled for 1 h to obtain a composite carrier, and the microencapsulated phase change material was added and mixed, and vacuum adsorbed at 85° C. for 11 h to obtain a composite phase change material;

[0036] The high thermal conductivity filler is a surface-modified carbon nanotube, 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) blending the composite phase change material and polyethylene terephthalate chips in a mass ratio of 10:90, using a twin-screw extruder for melt extrusion at an extrusion temperature of 210° C., and pelletizing after cooling to obtain a phase change energy temperature regulating fiber masterbatch;

[0038] (3) melt spinning was used to spin the phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate slices at a mass ratio of 1:2 into phase change energy temperature regulating fibers. The spinning tunnel diameter of the 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] Embodiment 2: A method for preparing a fat burning fabric, comprising the following steps:

[0041] (1) The modified attapulgite and the high thermal conductive filler were mixed and ball-milled at a mass ratio of 19.5:0.5 for 1 h to obtain a composite carrier, and the microencapsulated phase change material was added and mixed, and vacuum adsorbed 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) blending the composite phase change material and polyethylene terephthalate chips in a mass ratio of 15:85, using a twin-screw extruder for melt extrusion at an extrusion temperature of 215° C., and pelletizing after cooling to obtain a phase change energy temperature regulating fiber masterbatch;

[0044] (3) melt spinning was used to spin the phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips at a mass ratio of 1:12 into phase change energy temperature regulating fibers. The spinning tunnel diameter of the 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 the phase change energy temperature regulating fiber is knitted into fabric to obtain fat burning fabric.

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

[0047] (1) The modified attapulgite and the high thermal conductive filler were mixed and ball-milled at a mass ratio of 19.8:0.2 for 1 h to obtain a composite carrier, and the microencapsulated phase change material was added and mixed, and vacuum adsorbed 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) blending the composite phase change material and polyethylene terephthalate chips in a mass ratio of 20:80, using a twin-screw extruder for melt extrusion at an extrusion temperature of 220° C., and pelletizing after cooling to obtain a phase change energy temperature regulating fiber masterbatch;

[0050] (3) melt spinning was used to spin the phase change energy temperature regulating fiber masterbatch and polyethylene terephthalate chips in a mass ratio of 1:3 into phase change energy temperature regulating fibers. The spinning tunnel diameter of the 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 test: 1. The fat burning fabrics of Examples 1-3 and Comparative Examples 1-2 were tested for thermal stability (thermogravimetric analysis), phase change temperature and phase change enthalpy (differential scanning calorimetry), mechanical properties (tensile strength, elongation at break), comfort properties (breathability), and temperature regulation properties (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. Use the fat burning fabric of Example 1 and ordinary fabric of the same specifications to make underwear, select 5 volunteers, let the volunteers wear ordinary underwear first, measure and record their initial body temperature in a resting state, and then change to underwear made of the fat burning fabric of Example 1; use an infrared thermometer to measure the body temperature in different activity states: let the volunteers stay in a resting state for 10 minutes; let the volunteers walk for 10 minutes in a light exercise state; let the volunteers jog for 10 minutes in a moderate exercise state; let the volunteers recover for 10 minutes in a resting state during the recovery period. Record the initial and final body temperatures of each volunteer in different activity states, and calculate the temperature change value.

[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 change (℃) 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 heat dissipation of the human body 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 familiar with 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 a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still 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 the phase change energy temperature regulating fiber masterbatch is formed by melt extrusion and granulation of composite phase change material and polyethylene terephthalate slices, and comprises the following steps: (1) mixing modified attapulgite and high thermal conductivity filler and ball milling for 1-3 hours to obtain a composite carrier, adding microencapsulated phase change material and mixing, and vacuum adsorbing 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.

2. The phase change energy temperature regulating fiber masterbatch according to claim 1, characterized in that: The mixed mass ratio of the modified attapulgite and the high thermal conductivity filler is 19-20:0-1.

3. The phase change energy temperature regulating fiber masterbatch according to claim 2, characterized in that: The modified attapulgite is modified by acid activation, and the acid solution used is 0.8-1.2 mol / L hydrochloric acid.

4. The phase change energy temperature regulating fiber masterbatch according to claim 2, characterized in that: The high thermal conductivity filler is a surface-modified carbon nanotube or boron nitride nanosheet.

5. The phase change energy temperature regulating fiber masterbatch according to claim 4, characterized in that: The surface modification methods include oxidation treatment or grafting functional groups.

6. The phase change energy temperature regulating fiber masterbatch according to claim 1, characterized in that: The microencapsulated phase change material comprises a core material and a shell material, wherein 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 silicon dioxide shell layer formed by a sol-gel method or a polymer shell layer formed by an emulsion polymerization method.

7. The phase change energy temperature regulating fiber masterbatch according to claim 6, characterized in that: The mass ratio of the paraffin wax to the 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 phase-change paraffin wax, and the fatty acid is stearic acid or palmitic acid.

8. The phase change energy temperature regulating fiber masterbatch according to claim 7, 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.

9. A fat burning fabric, characterized in that: The fat burning fabric is prepared by melt spinning, network compounding and weaving of any one of the phase change energy temperature regulating fiber masterbatch of claims 1-8 and polyethylene terephthalate slices; the preparation method of the fat burning fabric comprises the following steps: (1) 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; (2) The phase change energy temperature regulating fiber is network-compounded, and the phase change energy temperature regulating fiber is woven or knitted into a fabric to obtain a fat burning fabric.

10. The fat burning fabric according to claim 9, characterized in that: 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.

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