CN103710964B - A kind of preparation method of phase change fiber - Google Patents
A kind of preparation method of phase change fiber Download PDFInfo
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- CN103710964B CN103710964B CN201310694807.5A CN201310694807A CN103710964B CN 103710964 B CN103710964 B CN 103710964B CN 201310694807 A CN201310694807 A CN 201310694807A CN 103710964 B CN103710964 B CN 103710964B
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Abstract
A preparation method for phase change fiber, technological process is: doughnut is put into hopper, adds phase-change material, and press pressing plate in hopper; Described hopper is put into a vacuum storehouse, by airtight for vacuum storehouse, and vacuum storehouse is vacuumized; Raise vacuum storehouse temperature, makes the temperature in vacuum storehouse higher than the fusing point of phase-change material, is melted by phase-change material; Stop vacuumizing and opening 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; Taken out by the doughnut filling phase-change material, the phase-change material of removing surface adhesion, can obtain the phase change fiber with temperature control effect.Advantage of the present invention is: phase-change material is directly circulated into inside hollow fibre, fixes phase-change material by the capillarity of doughnut endoporus, simpler than microcapsule method technique, and cost is low, and the effective content of phase-change material is high, can increase substantially thermoregulation effect.
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 class new type functional product phase-change material technology combined with fibre manufacturing technology, has Double-direction Temperature regulating action.When ambient temperature raises, the phase-change material comprised in fiber undergoes phase transition, and becomes liquid state from solid-state, absorbs heat storage 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 be in a kind of comfortable state.
The Mechanism of thermal regulating of phase change fiber textiles is different from conventional vacuum clothing, the feature that tradition clothing mainly utilizes air pyroconductivity minimum, the method improving fabric still air is adopted 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, phase change fiber textiles utilizes phase-change material in himself phase transition process to absorb or the heat of release makes the process of temperature remained constant be regulate heat, instead of isolated heat, be embodied in when environmental catastrophe, textiles can keep the temperature substantially constant in human body and this microclimate of textiles within a certain period of time, thus can heat stress be prevented, the needs of human body comfort are met when extraneous changes in environmental conditions.
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 be impregnated in by doughnut in phase-change material solution, hollow space is made to be full of phase-change material, again by fiber closed at both ends, shortcoming is that doughnut infusion process exists capping difficulties, and require that doughnut internal diameter is larger, phase change material residues in fiber surface, therefore is easy to ooze out and wash out; The melt viscosity that melt composite spinning method exists low temperature phase change material is low, without spinnability, merely phase change material is used for melt composite spinning very difficult, may be used for spinning but condition critical operation is complicated after adding plasticizer; Coating is simple and easy to do method phase change material is fixed on fabric, but can affect the gas permeability of textiles; Microcapsules composite spinning method adds in spinning solution by a certain amount of phase-change material micro-capsule, extruded make fiber by spinnerets, 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 the shortcoming overcoming above-mentioned several method, by the method for vacuum aided, phase-change material is filled into inside hollow fibre, provide 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, is characterized in that, comprises 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, by airtight for vacuum storehouse, and vacuum storehouse is vacuumized;
(3) Raise vacuum storehouse temperature, makes the temperature in vacuum storehouse higher than the fusing point of phase-change material, is melted by phase-change material;
(4) stop vacuumizing and opening 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) taken out by the doughnut filling phase-change material, the phase-change material of removing surface adhesion, can obtain the phase change fiber with temperature control effect.
Described phase-change material is paraffin class material, and the melting range of this paraffin class material is between 10 ~ 35 DEG C.
Described doughnut length range is 30 ~ 150mm, and linear density range is between 3.0 ~ 8.5dtex.
Effective phase-change material content in the phase change fiber using the method to make is up to 30%.
Advantage of the present invention is: phase-change material is directly circulated into inside hollow fibre, fixes phase-change material by the capillarity of doughnut endoporus, simpler than microcapsule method technique, and 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 yet, is a kind of " green " energy, 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 the present invention obtains; Abscissa is temperature axis, and ordinate is power shaft, and the curve above in figure is phase change fiber thermal discharge at different temperatures, and curve is below caloric receptivity.This figure represents that the endothermic peak temperature of phase change fiber is 32.5 DEG C, recepts the caloric as 107.85J/g, and exothermic peak temperature is 21.85 DEG C, and thermal discharge is 108.19J/g.
Fig. 2,3,4 is that the microphotograph of phase change fiber shows the state being full of phase-change material in doughnut, and as can be seen from the figure inside hollow fibre is filled with 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 state phase change material.
Detailed description of the invention
See Fig. 5, a concrete technology flow process of the present invention is that the doughnut 4 of 6.67dtex × 64mm is put into hopper 2, adds the paraffin phase change material 5 that fusing point is 32 DEG C, and press pressing plate 3 in hopper 2; Hopper 2 is put into vacuum storehouse 1, then by airtight for vacuum storehouse 1, and vacuum storehouse 1 is vacuumized; Stop vacuumizing after vacuum reaches-0.09MPa, and Raise vacuum storehouse temperature to 65 DEG C; After material 5 to be phased melts completely, guarantee that doughnut 4 all immerses below the liquid level of phase-change material 5, open the valve in vacuum storehouse 1, air is made to 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; Taken out by the doughnut 4 being full of phase-change material 5, the phase-change material 5 of removing surface adhesion, can obtain the phase change fiber with 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 DEG C.
Described doughnut 4 length range is 30 ~ 150mm, and linear density range is between 3.0 ~ 8.5dtex.
Effective phase-change material content in the phase change fiber using the method to make is up to 30%.
Carried out differential scanning calorimetry (DSC) test to phase change fiber prepared by the present invention, test result is see Fig. 1.
Phase change fiber prepared by the present invention picture under the microscope see Fig. 2,3 (800 ×), 4 (400 ×).
Claims (1)
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, by airtight for vacuum storehouse, and vacuum storehouse is vacuumized;
(3) Raise vacuum storehouse temperature, makes the temperature in vacuum storehouse higher than the fusing point of phase-change material, is melted by phase-change material;
(4) stop vacuumizing and opening vacuum storehouse valve, phase-change material can enter the inside of doughnut under the atmospheric effect in the external world, and fixing under the capillarity of doughnut endoporus;
(5) taken out by the doughnut filling phase-change material, the phase-change material of removing surface adhesion, can obtain the phase change fiber with temperature control effect;
Described phase-change material is paraffin class material, and the melting range of this paraffin class material is between 10-35 DEG C;
Described doughnut length range is 30 ~ 150mm, and linear density range is between 3.0 ~ 8.5dtex;
Effective phase-change material content in the phase change fiber using the method to make is up to 30%.
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| CN201310694807.5A CN103710964B (en) | 2013-12-18 | 2013-12-18 | A kind of preparation method of phase change fiber |
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| CN201310694807.5A CN103710964B (en) | 2013-12-18 | 2013-12-18 | A kind of preparation method of phase change fiber |
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| CN103710964A CN103710964A (en) | 2014-04-09 |
| CN103710964B true CN103710964B (en) | 2015-12-02 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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 |
| CN116063708A (en) * | 2021-11-02 | 2023-05-05 | 华为技术有限公司 | Colored fiber, colored fiber piece, fiber-reinforced composite, structural member and preparation method |
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