CN102443878B - A multi-functional comfortable fiber with phase change temperature adjustment, moisture absorption and perspiration - Google Patents
A multi-functional comfortable fiber with phase change temperature adjustment, moisture absorption and perspiration Download PDFInfo
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- CN102443878B CN102443878B CN201110286397.1A CN201110286397A CN102443878B CN 102443878 B CN102443878 B CN 102443878B CN 201110286397 A CN201110286397 A CN 201110286397A CN 102443878 B CN102443878 B CN 102443878B
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Abstract
The invention relates to multifunctional comfort fiber with functions of phase transition temperature regulation, moisture absorption and moisture wicking. According to the fiber, an interpenetrating network composite phase transition material is adopted as a heat storage and temperature regulation material, a fiber-forming polymer is adopted as a matrix, a pore-forming agent and a compatibilizer are added to prepare a spinning raw material, and a melt spinning process is adopted to prepare the multifunctional comfort fiber. The spinning raw material preparation method comprises: mixing the interpenetrating network composite phase transition material and the fiber-forming polymer according to a mass ratio of (95-60):(5-40), then adding the pore-forming agent and the compatibilizer, and uniformly mixing, wherein the mass of the pore-forming agent is 0-10% of the total mass of the interpenetrating network composite phase transition material and the fiber-forming polymer, the mass of the compatibilizer is 1-5% of the total mass of the interpenetrating network composite phase transition material and the fiber-forming polymer, the pore-forming agent is the PEG with the molecular weight of 1000-2000, the compatibilizer is one or a plurality of materials selected from PP-g-PEGA, PP-g-PEG, PET-g-PEGA, PEGA, montmorillonite, and the like. The phase transition temperature range of the multifunctional comfort fiber is 30-55 DEG C, the melting phase transition enthalpy is 5.24-29.12 J/g, the breaking strength is 3.0-3.5 cN/dex, and the thermal decomposition temperature is more than 400 DEG C.
Description
Technical field
The present invention relates to functional fiber technology, be specifically related to a kind ofly not only there is thermal energy storage and release, and possess moisture absorption sweat discharging functions, the comfortableness fiber that combination property is good.
Background technology
Continually developing along with phase-change material in recent years, utilize that phase-change material latent heat of phase change is high, phase transition process approximately constant temperature, Volume Changes be little, and the features such as process is easy to control, apply it in the production of phase change fiber, can develop multi-functional diversified phase change fiber.Phase change fiber can be according to the variation of ambient temperature, free adjustment textiles internal temperature in certain temperature range, and when ambient temperature raises, can storage power; When ambient temperature reduces, release energy, make the fluctuation of textiles internal temperature relatively less, people wears while using can feel more comfortable.When selecting phase transition function material, phase transition temperature and enthalpy of phase change are the most important, polyethylene glycol (PEG) just has that enthalpy of phase change is large, the thermal efficiency is high, the life-span is long, deformation is little, and material is easy to get, low price, the good combination property such as be applicable to commercially producing, and is excellent normal temperature phase-change material.The polyethylene glycol of usining adds on textile material and can make fabric have the specific function of bidirectional temp regulation as phase-change material, the correlative study that utilizes at present polyethylene glycol to prepare phase-changing and temperature-regulating fiber (fabric) comprises doughnut filling, surperficial coating processing, with crosslinking method, adds polyethylene glycol to textile material etc., the defect such as said method still exists that production efficiency is low, complex process, durability are poor.Utilize other phase-change material to prepare the technology of phase change fiber, multiplex solution spinning, industrialization report there are no melt-spinning temperature-regulating fiber, its main cause is that the spinning temperature of melt spinning method is higher, at high temperature, phase-change material easily runs off, decomposes, but melt spinning method has technological process simply and does not use the significant advantages such as solvent, therefore present technique adopts and utilizes acrylic amide cross-linked network skeleton as setting material, to carry out interpenetrating networks compound with PEG phase-change material, realized melt spinning processing phase-changing and temperature-regulating functional fiber.
Along with growth in the living standard, people are more and more higher to the requirement of textiles, when pursuing comfortableness, more and more pay close attention to the functionalization of textiles, and then the functional requirement of fiber is also become to more and more, single function can not meet people's demand, and people pursue the fiber of multifunction constantly.Hygroscopic fibre and phase-changing and temperature-regulating fiber are 21st century two maximum comfortableness fiber species.
Summary of the invention
The invention provides a kind of multifunctional comfortable fiber, on the basis of above-mentioned phase-changing and temperature-regulating function, by adding the mode of PEG pore former and fibre section heteromorphosis, realize capillary wicking and groove and lead wet effect, strengthening moisture absorbing and sweat releasing is multi-functional.The following scheme of concrete employing:
, a moisture absorbing and sweat releasing multifunctional comfortable fiber, take interpenetrating networks composite phase-change material as heat-storage thermoregulation material, fibre-forming polymer is matrix, adds pore former and bulking agent preparation spinning material, adopts melt-spinning technology to make;
30～55 ℃ of the phase transition temperature ranges of described multifunctional comfortable fiber, melt phase change enthalpy 5.24～29.12J/g, fracture strength 3.0～3.5cN/dex, heat decomposition temperature is more than 400 ℃;
Consisting of of described spinning material: interpenetrating networks composite phase-change material and fibre-forming polymer be (95-60) in mass ratio: (5-40) mix, add wherein the pore former of the two gross mass 0～10% and 1～5% bulking agent, mix; Wherein, described pore former is that molecular weight is 1000～2000 polyethylene glycol (PEG), and bulking agent is wherein one or more such as polypropylene grafted polyacrylic acid glycol ester (PP-g-PEGA), polypropylene grafted polyethylene glycol (PP-g-PEG), poly terephthalic acid grafted polyacrylic acid glycol ester (PET-g-PEGA), polyethylene glycol acrylate (PEGA), imvite.
When interpenetrating networks composite phase-change material, pore former and solubilizer three total content be spinning material quality 20% time, the combination property of fiber is best, and now enthalpy of phase change is 17.1J/g, and fracture strength is 3.03CN/dtex, extension at break is 50%, and heat decomposition temperature reaches more than 400 ℃.
The preparation method of described phase-changing and temperature-regulating, moisture absorbing and sweat releasing multifunctional comfortable fiber, comprises the steps:
1. prepare interpenetrating networks composite phase-change material: take N hydroxymethyl acrylamide as network monomer, N, N-methylene-bisacrylamide is crosslinking agent, and polyethylene glycol is phase-change material, and ammonium persulfate is initator, and water is solvent, adopts the synchronous IPN of solution polymerization process synthetic;
Wherein, phase-change material molecular weight polyethylene glycol is 2000～8000, its consumption is 40%～90% of gross mass, the mol ratio of crosslinking agent and network monomer is 1: 6～1: 12, the mass ratio of network monomer and water is 1: 4～1: 16, the mass fraction that initator accounts for network monomer is 1～4%, and reaction temperature is 70～85 ℃, and the reaction time is 2～5h;
2. prepare phase-changing and temperature-regulating, moisture absorbing and sweat releasing multifunctional comfortable fiber: interpenetrating networks composite phase-change material and fibre-forming polymer be (95-60) in mass ratio: (5-40) mix, add wherein the pore former of the two gross mass 0～10% and 1～5% bulking agent, mix and make spinning material, adopt melt-spinning technology to prepare target product;
Described pore former is that molecular weight is 1000～2000 PEG; Described bulking agent is wherein one or more such as PP-g-PEGA, PP-g-PEG, PET-g-PEGA, PEGA, imvite.
In the present invention step 1. the reaction system dispersing mode of described solution polymerization process be ultrasonic dispersion or mechanical agitation, jitter time is 5 minutes; After reaction finishes, product interpenetrating networks composite phase-change material is put into 35 ℃ of following thermostatic drying chambers and is dried to constant weight, or adopts freeze drying.More than being ground to 200 orders with analysis grinder after dry.
Fibre-forming polymer of the present invention comprises that polypropylene, polyamide, polyethylene, polycaprolactam, polyethylene terephthalate, polytrimethylene terephthalate, PA 66 etc. adopt a kind of in the fibre-forming polymer of melt-spinning technology producd fibers.
Fiber provided by the invention also possesses moisture absorption sweat discharging functions when possessing phase-changing and temperature-regulating function, and by having strengthened moisture absorbing and sweat releasing effect adding of pore former, solve the shortcoming of current fiber function singleness, met people to the diversified requirement of functions of textile fabrics.
The functional modifier of the inventive method blending has two classes, one class is for to prepare in the process of interpenetrating net polymer (IPN), the cross-linked network that utilizes a small amount of acrylic amide network monomer to generate is skeleton, the PEG phase-change material of molecular weight 2000～8000 is formalized fixing by physics IPN, as heat-accumulation temperature-adjustment function component, add, because it has good heat resistance and shear resistant, after melt spinning, be still retained in and in fibrous matrix, bring into play phase-changing and temperature-regulating function; Another kind of for introducing the pure PEG of molecular weight 1000～2000, as the pore former shaping in process, utilize its volatilization and stripping in spinning and washing processing procedure, make fiber produce capillary channel, strengthening moisture absorption sweat discharging functions.Great advantage of the present invention is the functional component PEG that utilizes different molecular weight, different setting to process, and realizes two kinds of modified effects of phase-changing and temperature-regulating and moisture absorbing and sweat releasing.Similar because of chemical property, can adopt same kind bulking agent, realize the regulation and control of spinnability and fiber structure-activity relationship.
Moisture absorption height and the diffusivity of multifunctional comfortable fiber prepared by the present invention meet industry standard, have obvious moisture absorbing and sweat releasing effect, and Good Heat-resistance.
The inventive method technique is simple, phase-change material is difficult for leaking and Heat stability is good, and fiber can retain higher enthalpy value, and the combination properties such as moisture absorption, mechanics are good, can be applicable to different field.
Compared with prior art, product multifunctional comfortable fiber of the present invention, has following outstanding advantage.The one, possess the multifunctionalities such as phase-changing and temperature-regulating and moisture absorbing and sweat releasing simultaneously; The 2nd, due to described polyacrylamide quasi-interpenetrating networks stable phase change composite material, setting skeleton is three dimensional gel cross-linked network, and network hole is adjustable, can make phase-change material leak lower, and heat resistance is good; The 3rd, the PEG that phase-change material is different molecular weight, can be by the mode of synchronous IPN in polymerization process, realize accurate solid-solid phase-change, not only can or adopt eutectic mode to regulate phase transition temperature and enthalpy of phase change by Molecular regulator amount, and possessing setting and still remain with in fixed effect the freedom of movement of macromolecular chain, can avoid the loss of enthalpy of phase change; The 4th, moisture absorption sweat discharging functions composition PEG and phase-changing and temperature-regulating functional component are PEG, and compatibility is good, are conducive to the comprehensive adjustment of technical recipe; The 5th, this multifunctional fibre can adopt common melt spinning method processing, and technique is simple, with low cost, is suitable for suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 is surface and the section SEM picture of embodiment 1 gained phase-changing and temperature-regulating fiber;
Fig. 2 is the DSC curve of embodiment 1 gained phase-changing and temperature-regulating fiber;
Fig. 3 is the DSC curve of embodiment 4 gained phase-changing and temperature-regulating fibers;
Fig. 4 is the mechanical curves of embodiment 1,2,3 and 4 gained phase-changing and temperature-regulating fibers;
Fig. 5 is the regain curve of embodiment 1,2,3 and 4 gained phase-changing and temperature-regulating fibers.
The specific embodiment
The following examples can make the present invention of those of ordinary skill in the art's comprehend, but do not limit the present invention in any way.
The polyethylene glycol acrylate Ke You market that the present invention uses is bought, also can the patent that be CN102093552 by publication number in disclosed method preparation.
Embodiment 1
1. the preparation of interpenetrating networks composite phase-change material: take N hydroxymethyl acrylamide as network monomer, N, N-methylene-bisacrylamide is crosslinking agent, and ammonium persulfate is initator, and polyethylene glycol is phase-change material.
Wherein, crosslinking agent 1.5g, monomer 8g, initator 0.3g, polyethylene glycol (molecular weight 2000) 24g, water 50ml.
Network monomer, crosslinking agent, polyethylene glycol and aqueous solvent are weighed according to the above ratio and be placed in flask, rear ultrasonic dispersion to be dissolved 5 minutes, adds initator, under 30 ℃ of water temperatures, disperses 5 minutes, then move in 75 ℃ of water-baths and react 3 hours, dry under 30 ℃ of low temperature afterwards.
2. phase-changing and temperature-regulating fiber preparation: take polyethylene glycol acrylate as bulking agent, composite phase-change material and polypropylene, in proportion in the spinning of screw extruder melt blending, are made to phase-changing and temperature-regulating fiber.Screw extruder geometric parameter: D, 20mm; L/D, 25; Technological parameter: rotating speed, 35r/min; 180 ℃ of temperature ，Yi district temperature 160 ℃， bis-district's temperature 175 ℃， tri-district's temperature 185 ℃， tetra-district's temperature.
Wherein, composite phase-change material 10g, polypropylene 40g, polyethylene glycol acrylate 2.5g.
As shown in Figure 1, multiplication factor is respectively 1000 and 1500 for the surface of gained phase-changing and temperature-regulating fiber and fracture morphology structure.Although visible fiber does not have adding of pore former, fiber surface has groove, and (a), section has hole formation (Fig. 1 b) to Fig. 1, possesses the function of moisture absorbing and sweat releasing.
Fig. 2 is the dsc analysis curve of phase-changing and temperature-regulating fiber.This temperature-regulating fiber melt phase change enthalpy reaches 17.10J/g, and melting phase transition temperature is 54.63 ℃, and fracture strength is 3.03CN/dtex, and extension at break is 50%, 400 ℃ of heat decomposition temperatures, and crystallization enthalpy of phase change reaches 4.75J/g, and crystalline phase transition temperature is 37.15 ℃.
Embodiment 2
1. the preparation of interpenetrating networks composite phase-change material: as embodiment 1.
2. phase-changing and temperature-regulating fiber preparation: take polyethylene glycol acrylate as bulking agent, composite phase-change material and polypropylene, in proportion in the spinning of screw extruder melt blending, are made to phase-changing and temperature-regulating fiber.Screw extruder geometric parameter: D, 20mm; L/D, 25; Technological parameter: rotating speed, 35r/min; 180 ℃ of temperature ，Yi district temperature 160 ℃， bis-district's temperature 175 ℃， tri-district's temperature 185 ℃， tetra-district's temperature.
Wherein, composite phase-change material 7.5g, polypropylene 42.5g, polyethylene glycol acrylate 2.5g.
Embodiment 3
1. the preparation of interpenetrating networks composite phase-change material: as embodiment 1.
2. phase-changing and temperature-regulating fiber preparation: take polyethylene glycol acrylate as bulking agent, composite phase-change material and polypropylene, in proportion in the spinning of screw extruder melt blending, are made to phase-changing and temperature-regulating fiber.Screw extruder geometric parameter: D, 20mm; L/D, 25; Technological parameter: rotating speed, 35r/min; 180 ℃ of temperature ，Yi district temperature 160 ℃， bis-district's temperature 175 ℃， tri-district's temperature 185 ℃， tetra-district's temperature.
Wherein, composite phase-change material 5g, polypropylene 45g, polyethylene glycol acrylate 2.5g.
Embodiment 4
1. the preparation of interpenetrating networks composite phase-change material: as embodiment 1.
2. phase-changing and temperature-regulating fiber preparation: take polyethylene glycol acrylate as bulking agent, composite phase-change material and polypropylene, in proportion in the spinning of screw extruder melt blending, are made to phase-changing and temperature-regulating fiber.Screw extruder geometric parameter: D, 20mm; L/D, 25; Technological parameter: rotating speed, 35r/min; 180 ℃ of temperature ，Yi district temperature 160 ℃， bis-district's temperature 175 ℃， tri-district's temperature 185 ℃， tetra-district's temperature.
Wherein, composite phase-change material 2.5g, polypropylene 47.5g, polyethylene glycol acrylate 2.5g.
Fig. 3 is the dsc analysis curve of phase-changing and temperature-regulating fiber.This temperature-regulating fiber melt phase change enthalpy reaches 5.24J/g, and phase transition temperature is 54.79 ℃, and melt phase change enthalpy has reached 80% (theoretical value is 6.55J/g) of theoretical value.
Fig. 4 is the mechanical curves of embodiment 1,2,3 and 4 gained phase-changing and temperature-regulating fibers.Compare with virgin pp fiber as seen, though the mechanical property of temperature-regulating fiber decline to some extent, more than its fracture strength all remains on 3cN/dex.
Fig. 5 be embodiment 1,2,3 and 4 gained phase-changing and temperature-regulating fibers regain curve.As can be seen from Figure 5, when not adding pore former composition, the regain of multifunctional fibre prepared by the inventive method increases along with the increase of IPN volume, when IPN content and Polymers body mass ratio are 20: 80, regain has reached 0.68%, make product fiber possess multifunctionality, this is mainly due to a large amount of introducings of hydrophilic radical hydroxyl and amide groups and the increase of amorphous area ratio.
1. the preparation of interpenetrating networks composite phase-change material: as embodiment 1.
2. phase-changing and temperature-regulating fiber preparation: take polyethylene glycol acrylate as bulking agent, take PEG as pore former, composite phase-change material and polypropylene, in proportion in the spinning of screw extruder melt blending, are made to phase-changing and temperature-regulating fiber.Screw extruder geometric parameter: D, 20mm; L/D, 25; Technological parameter: rotating speed, 35r/min; 180 ℃ of temperature ，Yi district temperature 160 ℃， bis-district's temperature 175 ℃， tri-district's temperature 185 ℃， tetra-district's temperature.
Wherein, composite phase-change material 2.5g, polypropylene 47.5g, polyethylene glycol acrylate 2.5g, PEG 2.5g.
In the present embodiment, for the moisture absorption sweat discharging functions of enhanced products fiber, added pore former, properties of product are in Table 1.Due to adding of pore former, the regain of product fiber prepared by the present embodiment brings up to 2.54%, thereby has strengthened the moisture absorption sweat discharging functions of product fiber.
The partial properties parameter of each embodiment product of table 1. is as shown in the table:
Claims (5)
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| CN102704037B (en) * | 2012-07-03 | 2014-01-22 | 天津工业大学 | Heat accumulating temperature regulating fiber and method for preparing same |
| CN105200559A (en) * | 2014-07-30 | 2015-12-30 | 耿云花 | Phase-change blend fiber |
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| CN108903100B (en) * | 2018-06-27 | 2021-04-09 | 上海明制实业有限公司 | Novel intelligent clothing material and preparation method thereof |
| CN109440223A (en) * | 2018-11-07 | 2019-03-08 | 午和（江苏）差别化纤维有限公司 | A kind of wet fiber material preparation method of spiral porous structure |
| CN110257951B (en) * | 2019-05-14 | 2021-06-15 | 常熟市华坤针纺织有限公司 | Preparation method of nano-functionalized moisture-absorbing sweat-releasing antibacterial fiber |
| CN110205692A (en) * | 2019-06-24 | 2019-09-06 | 绍兴诚邦高新纤维科技有限公司 | A kind of processing method of the double-colored superfine composite polyester fiber of same plate |
| CN111826965B (en) * | 2020-07-15 | 2021-09-03 | 华中科技大学 | Phase-change temperature-control fiber, yarn and fabric and application thereof |
| CN117385484A (en) * | 2023-09-03 | 2024-01-12 | 四川省丝绸科学研究院有限公司 | Preparation method of melt spinning phase change fiber, melt spinning equipment and phase change fiber |
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