CN103710964A - Preparation method of phase change fibers - Google Patents
Preparation method of phase change fibers Download PDFInfo
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- CN103710964A CN103710964A CN201310694807.5A CN201310694807A CN103710964A CN 103710964 A CN103710964 A CN 103710964A CN 201310694807 A CN201310694807 A CN 201310694807A CN 103710964 A CN103710964 A CN 103710964A
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Abstract
The invention provides a preparation method of phase change fibers. The preparation method comprises the following steps: putting hollow fibers in a liquid storage tank, adding phase change materials to the liquid storage tank, and pressing by using a pressing plate; putting the liquid storage tank in a vacuum bin, sealing the vacuum bin, and vacuumizing the vacuum bin; heating the vacuum bin so as to ensure that the temperature in the vacuum bin is higher than the melting point of the phase change materials so as to melt the phase change materials; stopping vacuumizing, and opening a valve of the vacuum bin so as to ensure that the phase change materials enter inner parts of the hollow fibers under the effect of external atmospheric pressure and are fixed under the capillarity action of inner holes of the hollow fibers; and taking out the hollow fibers filled with the phase change materials, and removing the phase change materials adhered to the surfaces of the hollow fibers, thus obtaining the phase change fibers with a temperature control effect. The preparation method has the advantages that the phase change materials are directly poured into the inner parts of the hollow fibers and are fixed through the capillarity action of the hollow fibers, compared with a microcapsule method, the preparation method is simple in process and low in cost, the effective content of the phase change materials is high, and the temperature adjusting effect can be substantially improved.
Description
Technical field
The present invention relates to the preparation method of phase change fiber, especially for the phase change fiber of shoemaking and clothing cloth, belong to phase-change heat-storage material field.
Background technology
Phase change fiber is the class new type functional product that phase-change material technology is combined with fibre manufacturing technology, has Double-direction Temperature regulating action.When ambient temperature raises, the phase-change material comprising in fiber undergoes phase transition, and from the solid-state liquid state that becomes, absorbs heat and is stored in fibrous inside; When ambient temperature reduces, phase-change material becomes solid-state from liquid state, discharges the heat of storage, keeps shell temperature, makes human body in a kind of comfortable state.
The Mechanism of thermal regulating of phase change fiber textiles is different from traditional heat-preserving clothes, tradition clothing is mainly the feature of utilizing air pyroconductivity minimum, adopt the method that improves fabric still air to avoid heat loss, its insulation effect depends primarily on thickness and the density of fabric, heat insulation effect can be subject to the impact of ambient pressure and moisture, it is to regulate heat that phase change fiber textiles utilizes heat that in himself phase transition process, phase-change material absorbs or discharges to make temperature keep constant process, rather than isolated heat, be embodied in when environmental catastrophe, textiles can keep the temperature substantially constant in this microclimate of human body and textiles within a certain period of time, thereby can prevent heat stress, when extraneous changes in environmental conditions, meet the needs of human body comfort.
The processing method of phase change fiber mainly contains: doughnut infusion process, melt composite spinning method, coating, microcapsules composite spinning method and macromolecular grafted modification method.These methods all have certain limitation.Doughnut infusion process is that doughnut be impregnated in phase-change material solution, make hollow space be full of phase-change material, again by fiber closed at both ends, shortcoming is that doughnut infusion process exists end-blocking difficulty, and require doughnut internal diameter larger, phase change material residues in fiber surface, therefore be easy to ooze out and wash out; Melt composite spinning method exists the melt viscosity of low temperature phase change material low, without spinnability, merely that phase change material is very difficult for melt composite spinning, and adding after plasticizer can be for spinning but condition critical operation is complicated; Coating is that phase change material is fixed to the simple and easy to do method on fabric, but can affect the gas permeability of textiles; Microcapsules composite spinning method is that a certain amount of phase-change material micro-capsule is added in spinning solution, by spinnerets, is extruded and is made fiber, and the effective content of the method high expensive phase-change material is low; Also there is complicated operation in macromolecular grafted modification method, the shortcoming that phase-change material effective content is low.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned several method, the method by vacuum aided, is filled into inside hollow fibre by phase-change material, provides a kind of making to have the method for the fiber of phase transition function.
Technical scheme of the present invention is: a kind of preparation method of phase change fiber, it is characterized in that, and comprise the steps:
(1) doughnut is put into hopper, in hopper, add phase-change material, and press pressing plate C;
(2) described hopper is put into a vacuum storehouse, vacuum storehouse is airtight, and vacuum storehouse is vacuumized;
(3) rising vacuum storehouse temperature, makes temperature in vacuum storehouse higher than the fusing point of phase-change material, and phase-change material is melted;
(4) stop vacuumizing and open vacuum storehouse valve, phase-change material can enter the inside of vacuum fiber under the atmospheric effect in the external world, and fixing under the capillarity of doughnut endoporus;
(5) doughnut of filling phase-change material is taken out, remove the phase-change material of surface adhesion, can obtain having the phase change fiber of temperature control effect.
Described phase-change material is paraffin class material, and the melting range of this paraffin class material is between 10～35 ℃.
Described doughnut length range is 30～150mm, and line density scope is between 3.0～8.5dtex.
Effective phase-change material content in the phase change fiber that use the method is made is up to 30%.
Advantage of the present invention is: phase-change material is directly circulated into inside hollow fibre, and the capillarity by doughnut endoporus is phase-change material fixedly, and simpler than microcapsule method technique, cost is low, and the effective content of phase-change material is high, can increase substantially thermoregulation effect.He does not need other energy, without emission, is a kind of " green " energy yet, can be widely used in shoemaking, clothes, automotive trim etc.
Accompanying drawing explanation
Fig. 1 is differential scanning calorimetry (DSC) test result of the phase change fiber that makes of the present invention; Abscissa is temperature axis, and ordinate is power shaft, and in figure, curve is above the thermal discharge of phase change fiber under different temperatures, and curve is below caloric receptivity.This figure represents that the endothermic peak temperature of phase change fiber is 32.5 ℃, recepts the caloric as 107.85J/g, and exothermic peak temperature is 21.85 ℃, and thermal discharge is 108.19J/g.
The microphotograph that Fig. 2,3,4 is phase change fiber shows the state that is full of phase-change material in doughnut, and as can be seen from the figure inside hollow fibre has been full of phase-change material, and space is smaller.
Fig. 5 is the structural representation of preparation facilities of the present invention, and 4 in figure is doughnut, and 5 is liquid phase-change material.
The specific embodiment
Referring to Fig. 5, a concrete technology flow process of the present invention is, the doughnut of 6.67dtex * 64mm 4 is put into hopper 2, is the paraffin phase change material 5 of 32 ℃, and presses pressing plate 3 to adding fusing point in hopper 2; Hopper 2 is put into vacuum storehouse 1, then that vacuum storehouse 1 is airtight, and vacuum storehouse 1 is vacuumized; After reach in vacuum-0.09MPa, stop vacuumizing, and the vacuum storehouse temperature to 65 ℃ that raises; After treating that phase-change material 5 melts completely, guarantee that doughnut 4 all immerses below the liquid level of phase-change material 5, open the valve in vacuum storehouse 1, make air enter vacuum storehouse 1, phase-change material 5 enters the inside of doughnut 4 under the atmospheric effect in the external world, and fixing under the capillarity of doughnut 4 endoporus; The doughnut 4 that is full of phase-change material 5 is taken out, remove the phase-change material 5 of surface adhesion, can obtain having the phase change fiber of temperature control effect.
Described phase-change material 5 is paraffin class material, and the melting range of this paraffin class material is between 10～35 ℃.
Described doughnut 4 length ranges are 30～150mm, and line density scope is between 3.0～8.5dtex.
Effective phase-change material content in the phase change fiber that use the method is made is up to 30%.
Phase change fiber prepared by the present invention has carried out differential scanning calorimetry (DSC) test, and test result is referring to Fig. 1.
Phase change fiber prepared by the present invention picture is under the microscope referring to Fig. 2,3 (800 *), 4 (400 *).
Claims (4)
1. a preparation method for phase change fiber, is characterized in that, comprises the steps:
(1) doughnut is put into hopper, in hopper, add phase-change material, and press pressing plate;
(2) described hopper is put into a vacuum storehouse, vacuum storehouse is airtight, and vacuum storehouse is vacuumized;
(3) rising vacuum storehouse temperature, makes temperature in vacuum storehouse higher than the fusing point of phase-change material, and phase-change material is melted;
(4) stop vacuumizing and open vacuum storehouse valve, phase-change material can enter the inside of vacuum fiber under the atmospheric effect in the external world, and fixing under the capillarity of doughnut endoporus;
(5) doughnut of filling phase-change material is taken out, remove the phase-change material of surface adhesion, can obtain having the phase change fiber of temperature control effect.
2. the preparation method of phase change fiber according to claim 1, is characterized in that, described phase-change material is paraffin class material, and the melting range of this paraffin class material is between 10～35 ℃.
3. the preparation method of phase change fiber according to claim 1, is characterized in that, described doughnut length range is 30～150mm, and line density scope is between 3.0～8.5dtex.
4. the preparation method of phase change fiber according to claim 1, is characterized in that, the effective phase-change material content in the phase change fiber that use the method is made is up to 30%.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104644321A (en) * | 2015-01-27 | 2015-05-27 | 广州医科大学附属第一医院 | Thermal therapy mask |
| CN104644323A (en) * | 2015-01-27 | 2015-05-27 | 广州医科大学附属第一医院 | Cooling head sleeve |
| CN106256950A (en) * | 2015-06-23 | 2016-12-28 | 香港理工大学 | A kind of fiber appendix, the method for release target substance |
| CN106518142A (en) * | 2016-11-29 | 2017-03-22 | 南京倍立达新材料系统工程股份有限公司 | Phase change, heat storage and temperature adjustment foam concrete |
| CN108130046A (en) * | 2017-11-29 | 2018-06-08 | 贵州省材料产业技术研究院 | Paraffin/Heat Conduction Material/polymer hollow fiber membrane composite phase-change material and preparation method thereof can be woven |
| CN108315832A (en) * | 2018-02-07 | 2018-07-24 | 华南理工大学 | A kind of flexibility continuous phase transistion fiber and its preparation method and application |
| CN108360082A (en) * | 2018-04-17 | 2018-08-03 | 康命源（贵州）科技发展有限公司 | One kind can weave multi-walled carbon nanotube and be modified composite phase-change material and preparation method thereof |
| CN110241608A (en) * | 2019-07-16 | 2019-09-17 | 兰州大学 | A kind of luminescent fibre and the preparation method and application thereof |
| CN113320187A (en) * | 2021-04-28 | 2021-08-31 | 蔡清洪 | Temperature-adjusting functional fiber material preparation equipment |
| CN113389055A (en) * | 2021-06-29 | 2021-09-14 | 上海护理佳实业有限公司 | Cool or heat-sensitive microcapsule, nonwoven fabric and absorbent article |
| CN113417147A (en) * | 2021-06-29 | 2021-09-21 | 上海护理佳实业有限公司 | Intelligent temperature-adjusting non-woven fabric and absorbent product |
| US11643584B2 (en) | 2017-11-16 | 2023-05-09 | Georgia Tech Research Corporation | Incorporation of microencapsulated phase change materials into wet-spin dry jet polymeric fibers |
| WO2023078185A1 (en) * | 2021-11-02 | 2023-05-11 | 华为技术有限公司 | Colored fiber, colored fiber part, fiber reinforced composite material, structural part, and preparation method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104644323A (en) * | 2015-01-27 | 2015-05-27 | 广州医科大学附属第一医院 | Cooling head sleeve |
| CN104644321B (en) * | 2015-01-27 | 2016-11-23 | 广州医科大学附属第一医院 | A kind of thermal therapy mask |
| CN104644321A (en) * | 2015-01-27 | 2015-05-27 | 广州医科大学附属第一医院 | Thermal therapy mask |
| CN106256950A (en) * | 2015-06-23 | 2016-12-28 | 香港理工大学 | A kind of fiber appendix, the method for release target substance |
| CN106518142A (en) * | 2016-11-29 | 2017-03-22 | 南京倍立达新材料系统工程股份有限公司 | Phase change, heat storage and temperature adjustment foam concrete |
| US11643584B2 (en) | 2017-11-16 | 2023-05-09 | Georgia Tech Research Corporation | Incorporation of microencapsulated phase change materials into wet-spin dry jet polymeric fibers |
| CN108130046A (en) * | 2017-11-29 | 2018-06-08 | 贵州省材料产业技术研究院 | Paraffin/Heat Conduction Material/polymer hollow fiber membrane composite phase-change material and preparation method thereof can be woven |
| CN108315832A (en) * | 2018-02-07 | 2018-07-24 | 华南理工大学 | A kind of flexibility continuous phase transistion fiber and its preparation method and application |
| CN108360082B (en) * | 2018-04-17 | 2020-07-10 | 康命源（贵州）科技发展有限公司 | Multi-walled carbon nanotube modified composite phase change material capable of being woven and preparation method thereof |
| CN108360082A (en) * | 2018-04-17 | 2018-08-03 | 康命源（贵州）科技发展有限公司 | One kind can weave multi-walled carbon nanotube and be modified composite phase-change material and preparation method thereof |
| CN110241608A (en) * | 2019-07-16 | 2019-09-17 | 兰州大学 | A kind of luminescent fibre and the preparation method and application thereof |
| CN113320187A (en) * | 2021-04-28 | 2021-08-31 | 蔡清洪 | Temperature-adjusting functional fiber material preparation equipment |
| CN113389055A (en) * | 2021-06-29 | 2021-09-14 | 上海护理佳实业有限公司 | Cool or heat-sensitive microcapsule, nonwoven fabric and absorbent article |
| CN113417147A (en) * | 2021-06-29 | 2021-09-21 | 上海护理佳实业有限公司 | Intelligent temperature-adjusting non-woven fabric and absorbent product |
| WO2023078185A1 (en) * | 2021-11-02 | 2023-05-11 | 华为技术有限公司 | Colored fiber, colored fiber part, fiber reinforced composite material, structural part, and preparation method |
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| CN103710964B (en) | 2015-12-02 |
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