A kind of manufacture method of uvioresistant staple fibre
Technical field
The present invention relates to antiultraviolet fiber and weave field, especially a kind of manufacture method of uvioresistant staple fibre.
Background technology
Current world economy high speed development, also the serious problems such as environmental pollution are brought, particularly the destruction of ozone layer is on the rise, the uitraviolet intensity arriving ground obviously increases, ultraviolet is also just increasing to the injury of human body, accept Ultraviolet radiation for a long time, the organic molecule life-span can be reduced, immune function of human body is declined, not only damage skin and cause the diseases such as dermatitis, freckle, erythema, and eye illness can be promoted, cause cataract, even cause the diseases such as cutaneum carcinoma, therefore how solving ultraviolet injury has become our problem demanding prompt solution.Along with the raising of living standards of the people, textile application field is more and more extensive, and society is also more and more higher to the requirement of textiles, so improve the anti-ultraviolet property of textiles, to guaranteeing health of people living safety, reducing the injury of ultraviolet to human body and having great significance.
The uvioresistant fiber provided in the market mainly adopts general fibre to do surperficial ultraviolet resistant treatment process, or adopting polyester fondant or polyester slice to add ultraviolet screening mother granule makes fiber, though the former energy temporarily uvioresistant, but the time one is long, or uvioresistant effect can be lost after washing, and the latter's uvioresistant effect is very good, belong to permanent ultraviolet protection.And zein fiber is as having biodegradable green fiber, possesses the advantage of natural fabric and chemical fibre two aspect simultaneously.How the advantage of polyester fiber, zein fiber being merged, developing a kind of novel uvioresistant staple fibre, is this area problem demanding prompt solution.
Summary of the invention
For solving the problem, the invention provides a kind of manufacture method of uvioresistant staple fibre, it mainly adopts cornstarch and polyester to be base stock, adds nano titanium oxide as anti ultraviolet agent, through melt spinning.
Its technical process is as follows:
(1) by cornstarch, PLA, ethylene glycol, surface conditioning agent is that 80:10:8:2 joins in mixed at high speed mixer according to weight ratio, rotating speed is 2500r/min, and the time of being uniformly mixed is 20 ~ 30min, and wherein addition sequence is for first to add cornstarch and ethylene glycol, add surface conditioning agent after stirring 5min, after stirring 10min, add PLA;
(2) polyester slice and decamethylcyclopentaandoxane, nano titanium oxide are joined in mixed at high speed mixer, the weight ratio of three is 80:15:5, rotating speed is 2500r/min, the time of being uniformly mixed is 20 ~ 30min, wherein addition sequence is for first to add decamethylcyclopentaandoxane and nano titanium oxide, adds polyester slice again after stirring 5min;
(3) material obtained in (1) and (2) is mixed in homogenizer, be warming up to 180 DEG C under keeping stirring, then improve rotating speed to 4000r/min, continue stirring 20 ~ 30min, then stop heating and continuing to be stirred to mixing, then cooling discharging;
(4) material of cooling discharging is placed in vacuum drum drying machine, at 90 ~ 100 DEG C of fully dry 12 ~ 15h;
(5) dried material is carried out screw rod melt extruded and obtains melt, melt through filtering, metering spinning, ring quenching, winding oil, draw feeding, Sheng silk falls bucket; When material enters screw rod melt extruded, screw rod each district temperature controls between 260 ~ 310 DEG C, and screw rod head Stress control is at 10 ~ 18MPa, and melt enters fondant filter, the screen pack precision of filter is 120 ~ 250 orders, and the filtration gross area of filter is 4.5 ~ 12m
2, filter temperature controls at 260 ~ 290 DEG C; Melt is out metered into spinning manifold through measuring pump afterwards from filter, extrudes precursor from spinnerets, and before spinning manifold, pressure remains on 4MPa ~ 6MPa, and spinning body temperature remains on 260 ~ 290 DEG C; The temperature of ring blowing is 15 ~ 32 DEG C, and wind speed is 0.6 ~ 2 meter per second; Winding speed is 800 ~ 1200 ms/min;
(6) boundling process is carried out to fiber, through oil bath drawing-off, steam drafting, nervous HEAT SETTING, oil, folded silk, curling, relaxation heat setting, cut-out, packing, obtain uvioresistant staple fibre product;
Wherein, oil bath drawing-off bath temperature is 60 ~ 80 DEG C, steam chest temperature is 90 ~ 120 DEG C, nervous heat setting temperature is 130 ~ 160 DEG C, relaxation heat setting temperature is 120 ~ 150 DEG C, the relaxation heat setting time is 15 ~ 30 minutes, finally cuts into the staple fibre of 38mm, 51mm, 65mm or 76mm length.
Wherein surface conditioning agent is one or more in vegetable oil, mineral oil, titanium coupling agent, stearic acid, aluminum coupling agent, silane coupler, phosphate coupling agent, aluminium titanium composite coupler.
Further, oil bath drawing-off bath temperature is 80 DEG C, and steam chest temperature is 110 DEG C, and nervous heat setting temperature is 150 DEG C, and relaxation heat setting temperature is 140 DEG C, and the relaxation heat setting time is 25 minutes, finally cuts into the staple fibre of 38mm length.
The present invention has following beneficial effect:
1, in the mixed process of cornstarch, PLA, surface conditioning agent and ethylene glycol, by first adding cornstarch and ethylene glycol, then adding surface conditioning agent, finally adding PLA, improve the compatibility between material, it is dropped to minimum on the impact of fiber strength;
2, be generally that nano titanium oxide is directly joined in polyester slice in prior art, or carried out simple surface modification, but nano titanium oxide is as inorganic component, it adds to the intensity effect of polyester fiber clearly, the present invention adopts decamethylcyclopentaandoxane, utilize the design feature that it is special, increase the compatibility of titanium dioxide and polyester, thus the impact of titanium dioxide on fiber strength is dropped to minimum.
The concentration occurred in present specification, specification digest, claims, wt% is the percentage by weight relative to fabric, and if no special instructions, all the other are mass concentration, and percentage is weight percentage.
Detailed description of the invention
Below in conjunction with specific embodiment, more detailed introduction is carried out to technical scheme of the present invention, but protection scope of the present invention is not limited thereto.
embodiment 1:
(1) by cornstarch, PLA, ethylene glycol, aluminum coupling agent is that 80:10:8:2 joins in mixed at high speed mixer according to weight ratio, rotating speed is 2500r/min, and the time of being uniformly mixed is 30min, and wherein addition sequence is for first to add cornstarch and ethylene glycol, add surface conditioning agent after stirring 5min, after stirring 10min, add PLA; (2) polyester slice and decamethylcyclopentaandoxane, nano titanium oxide are joined in mixed at high speed mixer, the weight ratio of three is 80:15:5, rotating speed is 2500r/min, the time of being uniformly mixed is 30min, wherein addition sequence is for first to add decamethylcyclopentaandoxane and nano titanium oxide, adds polyester slice again after stirring 5min; (3) material obtained in (1) and (2) is mixed in homogenizer, under keeping stirring, be warming up to 180 DEG C, then improve rotating speed to 4000r/min, continue to stir 20min, then stop heating and continuing to be stirred to mixing, then cooling discharging; (4) material of cooling discharging is placed in vacuum drum drying machine, at 90 DEG C of abundant dry 15h; (5) dried material is carried out screw rod melt extruded and obtains melt, melt through filtering, metering spinning, ring quenching, winding oil, draw feeding, Sheng silk falls bucket; When material enters screw rod melt extruded, screw rod each district temperature controls between 260 ~ 310 DEG C, and screw rod head Stress control is at 10 ~ 18MPa, and melt enters fondant filter, and the screen pack precision of filter is 250 orders, and the filtration gross area of filter is 12m
2, filter temperature controls at 260 ~ 290 DEG C; Melt is out metered into spinning manifold through measuring pump afterwards from filter, extrudes precursor from spinnerets, and before spinning manifold, pressure remains on 4MPaMPa, and spinning body temperature remains on 260 DEG C; The temperature of ring blowing is 15 DEG C, and wind speed is 0.6 meter per second; Winding speed is 800 ms/min; (6) boundling process is carried out to fiber, through oil bath drawing-off, steam drafting, nervous HEAT SETTING, oil, folded silk, curling, relaxation heat setting, cut-out, packing, obtain uvioresistant staple fibre product; Oil bath drawing-off bath temperature is 80 DEG C, and steam chest temperature is 110 DEG C, and nervous heat setting temperature is 150 DEG C, and relaxation heat setting temperature is 140 DEG C, and the relaxation heat setting time is 25 minutes, finally cuts into the staple fibre of 38mm length.
embodiment 2:
(1) by cornstarch, PLA, ethylene glycol, aluminum coupling agent is that 80:10:8:2 joins in mixed at high speed mixer according to weight ratio, rotating speed is 2500r/min, and the time of being uniformly mixed is 20min, and wherein addition sequence is for first to add cornstarch and ethylene glycol, add surface conditioning agent after stirring 5min, after stirring 10min, add PLA; (2) polyester slice and decamethylcyclopentaandoxane, nano titanium oxide are joined in mixed at high speed mixer, the weight ratio of three is 80:15:5, rotating speed is 2500r/min, the time of being uniformly mixed is 30min, wherein addition sequence is for first to add decamethylcyclopentaandoxane and nano titanium oxide, adds polyester slice again after stirring 5min; (3) material obtained in (1) and (2) is mixed in homogenizer, under keeping stirring, be warming up to 180 DEG C, then improve rotating speed to 4000r/min, continue to stir 30min, then stop heating and continuing to be stirred to mixing, then cooling discharging; (4) material of cooling discharging is placed in vacuum drum drying machine, at 100 DEG C of abundant dry 12h; (5) dried material is carried out screw rod melt extruded and obtains melt, melt through filtering, metering spinning, ring quenching, winding oil, draw feeding, Sheng silk falls bucket; When material enters screw rod melt extruded, screw rod each district temperature controls between 260 ~ 310 DEG C, and screw rod head Stress control is at 10 ~ 18MPa, and melt enters fondant filter, and the screen pack precision of filter is 250 orders, and the filtration gross area of filter is 12m
2, filter temperature controls at 260 ~ 290 DEG C; Melt is out metered into spinning manifold through measuring pump afterwards from filter, extrudes precursor from spinnerets, and before spinning manifold, pressure remains on 4MPaMPa, and spinning body temperature remains on 260 DEG C; The temperature of ring blowing is 32 DEG C, and wind speed is 2 meter per seconds; Winding speed is 1200 ms/min; (6) boundling process is carried out to fiber, through oil bath drawing-off, steam drafting, nervous HEAT SETTING, oil, folded silk, curling, relaxation heat setting, cut-out, packing, obtain uvioresistant staple fibre product; Oil bath drawing-off bath temperature is 80 DEG C, and steam chest temperature is 110 DEG C, and nervous heat setting temperature is 150 DEG C, and relaxation heat setting temperature is 140 DEG C, and the relaxation heat setting time is 25 minutes, finally cuts into the staple fibre of 38mm length.
According to the uvioresistant staple fibre that embodiment 1 and 2 is produced, fibre number is 2.6 ~ 2.8dtex, ultimate strength >=6.5cN/dtex, elongation at break is 25 ~ 30%, average length is 38mm, 51mm, 65mm or 76mm, rate of ultraviolet shield >=90%, has excellent anti-ultraviolet function.
The above is the preferred embodiment of the present invention, it should be pointed out that the general technical staff for the art, and under the premise without departing from the principles of the invention, can also make improvement and modification, these improve and modification also should be considered as protection scope of the present invention.