CN104695044A - Manufacturing method of direct-spinning whitening uvioresistant functional polyester staple fibers - Google Patents
Manufacturing method of direct-spinning whitening uvioresistant functional polyester staple fibers Download PDFInfo
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Abstract
The invention provides a manufacturing method of direct-spinning whitening uvioresistant functional polyester staple fibers. The method comprises the steps of installing a dynamic mixing device on a PET (Polyethylene Glycol Terephthalate) molten mass main conveying pipeline behind a polyester final polycondensation kettle and in front of a spinning box; taking out the PET molten mass which is no more than 5%wt of the total flow from the PET molten mass main conveying pipeline by the dynamic mixing device, and feeding 2,2'-(1,2-Ethenediyldi-4,1-phenylene) bisbenzoxazol organic monomer to mix; sending back a mixture into the PET molten mass main conveying pipeline, and then spinning after the static mixing. According to the manufacturing method provided by the invention, the PET molten mass main conveying pipeline between the polyester final polycondensation and the spinning is provided with the dynamic mixing device, the 2,2'-(1,2-Ethenediyldi-4,1-phenylene) bisbenzoxazol organic monomer and/or an organic ultrafine additive and/or an auxiliary fiber drawing additive is added and mixed in the PET molten mass which is no more than 5%wt of the total flow, therefore a variety switching transition material can be reduced greatly; compared with a masterbatch pelletizing, slicing and melt spinning method, the cost can be reduced by about 75%, and the quality of the modified product is stable.
Description
Technical field
The present invention relates to the manufacture method that a kind of direct fabrics brighten anti-ultraviolet function polyester staple fiber, belong to synthetic fiber technical field.
Background technology
Last century the mid-80, polyester fiber industrialization obtains fast development, meanwhile, also obtains extensive investigation and application to the chemistry of fiber and physical modification technology.Wherein, functional textile and fiber are improving the added value of weaving final products and are improving human body einnehmen function and extend and obtain effect in sensory comfort and partial protection function (color of nice and cool, warming, the vision of body sense, the fragrance of sense of smell, resist ultraviolet etc.).Brighten the class belonging to functional fiber with uvioresistant fiber, can be used for the textiless such as clothes, last century, the mid-80 formed achievement in research and mass production in companies such as Japan and North Americas.
The manufacture method of anti-ultraviolet fabric generally has: 1, fabric post-treatment method, namely can apply different anti-ultraviolet finishing technology by different textiless, as dyeing arranges, brightens process, inorganic powder coating etc.; 2, in fiber manufacture process, inorganic powder is added; 3, organic uv absorbers is added in the fibre.
A large amount of energy is taken to the research and development of first and second kind of method both at home and abroad, also achieve good effect, but the third method is more preferably select to the anti-ultraviolet fabric based on terylene.Think according to the relevant UPF testing standard (AS/NZS4399.1996) of Australia and New Zealand, UPF and anti-ultraviolet effect can be stated by grade.In fact anti-ultraviolet effect is the result of polytomy variable.
Affect the factor of textiles uvioresistant effect mainly:
(1) fabric that structure is lax, its coverage coefficient is very low, and light is subject to limited covering, thus easily via; Under the condition of same density, fabric is more thick and heavy, ultraviolet also more not easily through.
(2) absorption of high molecule spinning material to spectrum of different dyeing and no dyeing is different, its molecular structure of dyestuff of different nature is different, also just different to the absorption of spectrum, therefore, under normal circumstances, textiles is darker through same class dyeing, better to ultraviolet screening performance.
(3) employ the textiles of Optical Bleaching Agent, have very strong ultraviolet absorption ability, therefore screening performance is usually fine, and its main principle is that the some ultra violet rays in sunlight can be converted to macroscopic light by brightening agent.
(4) ultraviolet resistance of fabric is also subject to the matrix of fiber own and is manually attached to the impact of organic or inorganic material of fiber.The natural fabrics such as cotton, real silk are low to ultraviolet absorbability, and thus ultraviolet resistance is just poor.Wool is then better a little.Synthetic fiber are better than natural fabric to ultraviolet absorbability, and wherein terylene is the strongest.
(5) occurring in nature many kinds of substance has shielding action to light, as Al
2o
3, MgO, ZnO, TiO
2, SO
2, CaCO
3, kaolin, carbon black, metal etc.(be generally micro-ceramic powder, if it is better to reach nanoscale) when superfine powder made by these materials, because its specific area is very big, surface energy is very high, has very high chemism, causes the remarkable enhancing of the aspect performances such as light absorption.When it mixes in high molecular polymer, or by dyeing and finishing or coating, the anti-ultraviolet function of fabric will be made greatly to strengthen.
Chinese patent CN102864518B discloses a kind of anti-ultraviolet high-tenacity polyester industrial yarn, comprise following raw material: TiO 2 particles 0.2% ~ 0.9%, carbon black 0.6% ~ 1.7%, antioxidant 0.03% ~ 0.19%, anti ultraviolet agent 0.01% ~ 0.11%; Anti ultraviolet agent is 2-(2H-benzotriazole-2)-4,6-bis-(1-methyl isophthalic acid-phenylethyl) phenol, and antioxidant is the compound of phosphite ester and hindered phenol.Also disclose its preparation method, this industrial yarn has the multi-functional of absorption or uv reflectance, high to ultraviolet screener efficiency, has concurrently anti-oxidant, and don't affect the specific function of polyester high strength industrial filament, low, xeothermic low, the physical property chemical fibre stable in properties of intensity superelevation, degree of stretching.
Chinese patent CN101525475B discloses a kind of anti-ultraviolet polyester and preparation method thereof, is the copolymer obtained through polymerisation by the monomers terephthalic acid and biogenetic derivation ethylene glycol, uvioresistant particle, dispersant, auxiliary agent that form polyester.The inventive method is simple, and easy to operate, uvioresistant particle dispersion is homogeneous, stable variety, and the polymer of production can be applicable to the fields such as fiber, film and engineering material.
Chinese patent CN101629334B disclose a kind of uvioresistant, antibacterial, lead wet type polyster fibre and preparation method thereof and application.The polyster fibre of disclosure of the invention, is made up of the raw material of following weight percents: the uvioresistant master batch of 1 ~ 5%, the silver system antibacterial matrices of 1 ~ 10%, 85 ~ 98% Terylene fiber resin, described fibre section is odd-shaped cross section.
Although it is low to add organic uvioresistant additive relative skill difficulty in process of polyester synthesizing, direct fabrics method can be adopted to obtain functional fiber of good performance, but be subject to the restriction of fiber product variation small lot, the Transition Materials that switching kind is brought is many, and relative cost increases.
Adopt ultraviolet screening mother granule side line to add to solve polymerization and switch Transition Materials problem with the multi items of direct fabrics, but the physical and mechanical properties of fiber and quality stability undesirable, production cost is high.
The relatively organic uvioresistant additive of method adopting nanoscale or quasi-nano inorganic particle uvioresistant to add dissolves in the method for polyester melt, and cost is high, and the physical mechanical performance of fiber weakens, unstable product quality.
For taking PET staple fibre, adding the variation that carbon black limits final textiles, and a large amount of Transition Materials is caused to production switch.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides the manufacture method that a kind of direct fabrics brighten anti-ultraviolet function polyester staple fiber.
The technical scheme that the present invention takes is: a kind of direct fabrics brighten the manufacture method of anti-ultraviolet function polyester staple fiber, after PET final polycondensation still, polyethylene terephthalate (PET) molten mass conveying Trunk Line before manifold arranges dynamic mixing device, the PET molten mass being not more than bulk flow 5%wt takes out by described dynamic mixing device from PET molten mass conveying Trunk Line, and after adding the mixing of diphenylethyllene dibenzoxazine class organic monomer, send back in PET molten mass conveying Trunk Line, then after static mixing, spinning is carried out, the addition of described diphenylethyllene dibenzoxazine class organic monomer is 0.010 ~ 0.030%wt of PET molten mass total amount.Diphenylethyllene dibenzoxazine class organic monomer is crystalloid powder state thing at normal temperatures, be insoluble to the monomer ethylene glycol of polyester PET, but be dissolved in esterifying liquid diglycol terephthalate (BHET) or PET molten mass, do not participate in polycondensation reaction, decomposition temperature is greater than 300 DEG C, absorbs ultraviolet and ultraviolet is converted into blue visible light.
Further, inorganic ultrafine additive also to join in the PET molten mass of taking-up and mixes by described dynamic mixing device, and the addition of described inorganic ultrafine additive is 0.10 ~ 5.0%wt of PET molten mass total amount.
Further, the described dynamic mixing device additive that also stretched by auxiliary fiber to join in the PET molten mass of taking-up and to mix, and the addition of described auxiliary fiber stretching additive is 0.02 ~ 0.12% of PET molten mass total amount.
Further, described inorganic ultrafine additive is titanium dioxide, and its average grain diameter is 0.28 μm, is greater than 0.20, and the quantity being less than 0.36 μm is greater than 99.0%.
Further, described auxiliary fiber stretching additive is barium sulfate, and its average grain diameter is 1.0 μm, is greater than 0.8, and the quantity being less than 1.2 μm is greater than 99.0%.
Further, described diphenylethyllene dibenzoxazine class organic monomer is 2,2-(4,4-diphenylethyllene) dibenzoxazine.
The present invention arranges dynamic mixing device after PET final polycondensation to the PET molten mass of spinning conveying Trunk Line, mixing in the PET molten mass being not more than bulk flow 5%wt is added diphenylethyllene dibenzoxazine class organic monomer and/or inorganic ultrafine additive and/or auxiliary fiber stretching additive, reinject melt pipe after metering, join with the molten mass in Trunk Line and after static mixer mixes, carry out spinning again, break away from the state that Direct Spinning addition type modified technique is subject to being polymerized constraint, mixed fully after the first mode dynamically mixing again static mixing makes the auxiliary materials such as diphenylethyllene dibenzoxazine class organic monomer add, kind switches Transition Materials and greatly reduces.Relative master batch granulation section melt spinning method cost reduces about 75%, modified constant product quality.The technique of spinning of the present invention and Final finishing is produced identical with routine, existing equipment is improved a little and can be come into operation, improvement cost is low, the staple fibre physical and mechanical properties made, textile process performance, not because change after adding above-mentioned functions organic additive, do not occur running bad phenomenon in staple fibre manufacture process.So-called bad phenomenon refers to that fiber surprisingly ruptures, cannot fibroblast etc.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram that direct fabrics of the present invention brighten anti-ultraviolet function polyester staple fiber.
Fig. 2 is the chemical structural formula of 2,2-(4,4-diphenylethyllene) dibenzoxazine.
Below in conjunction with accompanying drawing, the present invention is described further.
Detailed description of the invention
The manufacture of brightening uvioresistant high-strength flatness cotton polyester staple fiber of embodiment 1 clothes
Melt booster pump 2 after PET final polycondensation still 1 exports, molten mass be delivered to spinning PET molten mass conveying Trunk Line 3 on dynamic mixing device is set, this dynamic mixer is taken out the PET molten mass being about bulk flow 5%wt by charging pump 4, be supplied to dynamic stirring, with two building block system screw rods 6 of the equidirectional rotation of jacket heat-preservation, arrange additive metering system 5 at the feed end of two building block system screw rod, additive addition and charging pump 4 link.Add diphenylethyllene dibenzoxazine class organic monomer, inorganic ultrafine additive through mixing, then return PET molten mass conveying Trunk Line 3 by measuring pump 7 note, join with the molten mass in Trunk Line 3, then enter manifold 9 after static mixer 8 mixes.The diphenylethyllene dibenzoxazine class organic monomer added is 2,2-(4,4-diphenylethyllene) dibenzoxazine (Eastman Chem Co. of U.S. product OB-1, CAS No:1533-45-5), addition is the 0.025%wt of PET molten mass total amount, the fusing point of this additive is 357-359 DEG C, has good dispersiveness in PET melt.The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section, and inorganic ultrafine additive is titanium dioxide delustering agent, and addition is 0.30%wt.Target terylene short fiber fibre number is 1.56dtex, high-strength flatness cotton, and for apparel textile, fabric uvioresistant target UPF is greater than 50.
Spinning and after-drawing technique identical with routine, testing result is in table 1.
The manufacture of brightening uvioresistant, high resistance light high-strength flatness cotton polyester staple fiber of embodiment 2 clothes
The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section, and target terylene short fiber fibre number is 1.67dtex., high-strength flatness cotton, for apparel textile, fabric possesses high resistance light (namely anti-transparent) fabric uvioresistant target UPF and is greater than 50.Adding 2,2-(4,4-diphenylethyllene) dibenzoxazine is uvioresistant additive, and addition is the 0.010%wt of PET molten mass total amount, and the fusing point of this additive is 357-359 DEG C, has good dispersiveness in PET melt.And add the titanium dioxide delustering agent of 5.0%wt, play obstruct visible ray, make fabric possess anti-transparent characteristic.Testing result is in table 1.
Embodiment 3 sewing thread is with brightening uvioresistant high-strength flatness lower shrinkage polyester staple fiber
The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section.Target terylene short fiber fibre number is 1.33dtex, and high-strength flatness lower shrinkage sewing line style, for sewing thread or apparel textile, fabric uvioresistant target UPF is greater than 50.Add 2,2-(4,4-diphenylethyllene) dibenzoxazine as uvioresistant additive, addition is the 0.025%wt of PET molten mass total amount.And to add fibre-grade barium sulfate (German Sha Hali our company produce) be auxiliary fiber stretching additive, the 0.080%wt that addition is.The results are shown in Table 1.
Embodiment 4 sewing thread is with brightening uvioresistant superelevation strong flatness lower shrinkage polyester staple fiber
The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section.Target terylene short fiber fibre number is 1.33dtex, and high-strength flatness lower shrinkage sewing line style, for sewing thread or apparel textile, fabric uvioresistant target UPF is greater than 50.Add 2,2-(4,4-diphenylethyllene) dibenzoxazine as uvioresistant additive, addition is the 0.030%wt of PET molten mass total amount.And to add fibre-grade barium sulfate be auxiliary fiber stretching additive, addition is 0.012%wt.The results are shown in Table 1.
Stretch wear-resisting type during the micro-delustring of embodiment 5 is high-strength and take polyester staple fiber
The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section.Target terylene short fiber fibre number is 1.42dtex, stretches wear-resisting type and take polyester staple fiber during micro-delustring is high-strength, and for wear-resistant garment textiless such as uniform, Work Clothes, fabric uvioresistant target UPF is greater than 50.Add 2,2-(4,4-diphenylethyllene) dibenzoxazine as uvioresistant additive, addition is the 0.025%wt of PET molten mass total amount.Add titanium dioxide delustering agent as inorganic ultrafine additive, addition is 0.10%wt, and adding fibre-grade barium sulfate is auxiliary fiber stretching additive, and addition is 0.02%wt.The results are shown in Table 1.
Comparative example 1 adopts the high-strength flatness cotton polyester staple fiber of brightening mother particle spinning
The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section, and melt has added 0.30%wt titanium dioxide delustering agent.Target terylene short fiber fibre number is 1.56dtex, high-strength flatness cotton, and for apparel textile, fabric uvioresistant target UPF is greater than 50.Select 2,2-(4,4-diphenylethyllene) dibenzoxazine to be uvioresistant additive, addition is the 0.025%wt of staple fibre.In master batch, uvioresistant additive level is 3.5%wt, by screw extruder, master batch melting is expelled to melt Conveying Trunk Line, after joining, carries out spinning by static mixer mixing with melt.The results are shown in Table 1.
Comparative example 2 adopts the high-strength flatness cotton polyester staple fiber of quasi-nano titanium dioxide master batch spinning
The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section.Target terylene short fiber fibre number is 1.56dtex, high-strength flatness cotton, and for apparel textile, fabric uvioresistant target UPF is greater than 50.In master batch, content of titanium dioxide is 18%wt, in staple fibre, content of titanium dioxide is 2.5%, by screw extruder, master batch melting is expelled to melt Conveying Trunk Line, after joining, carries out spinning by static mixer mixing with melt.The results are shown in Table 1.
The conventional high-strength flatness cotton polyester staple fiber of reference examples 3
The final polymerization daily output 400 tons, provides spinning to have a daily output of 200 tons, and 200 tons is section, and melt adds 0.30%wt titanium dioxide delustering agent.Target terylene short fiber fibre number is 1.56dtex, and high-strength flatness cotton, for apparel textile.The results are shown in Table 1.
The table 1 fiber test result table of comparisons
Remarks 1: row yielding refers to whole molten mass total amount and the ratio of weight making qualified staple fibre
Remarks 2:UPF tests the evaluation according to GB/T 18830-2009 ultraviolet resistance of fabric, and 100% polyester staple fiber makes standard textile product, does not arrange through dyeing.
As can be seen from the above table, the resistant fiber ultraviolet index that the present invention obtains is more than 55, and high-strength its mechanical performance of flatness cotton polyester staple fiber of relative routine fashion, processing characteristics are substantially identical.
The fiber that mode of the present invention is suitable for comprises sewing thread with having light, half delustring staple fibre, and high-strength flatness cotton has light, half delustring, full-dull staple fibre, hollow three-dimensional crimp filled-type staple fibre, medium length type, wool type to have light, half delustring, full-dull staple fibre and endless tow, non-weaving cloth acupuncture, water thorn to have light, half delustring staple fibre.
Claims (6)
1. direct fabrics brighten the manufacture method of anti-ultraviolet function polyester staple fiber, it is characterized in that: after PET final polycondensation still, PET molten mass conveying Trunk Line before manifold arranges dynamic mixing device, the PET molten mass being not more than bulk flow 5%wt takes out by described dynamic mixing device from PET molten mass conveying Trunk Line, and after adding the mixing of diphenylethyllene dibenzoxazine class organic monomer, send back in PET molten mass conveying Trunk Line, then after static mixing, spinning is carried out, the addition of described diphenylethyllene dibenzoxazine class organic monomer is 0.010 ~ 0.030%wt of PET molten mass total amount.
2. direct fabrics according to claim 1 brighten the manufacture method of anti-ultraviolet function polyester staple fiber, it is characterized in that: inorganic ultrafine additive also to join in the PET molten mass of taking-up and mixes by described dynamic mixing device, and the addition of described inorganic ultrafine additive is 0.10 ~ 5.0%wt of PET molten mass total amount.
3. direct fabrics according to claim 1 and 2 brighten the manufacture method of anti-ultraviolet function polyester staple fiber, it is characterized in that: the described dynamic mixing device additive that also stretched by auxiliary fiber to join in the PET molten mass of taking-up and to mix, and the addition of described auxiliary fiber stretching additive is 0.02 ~ 0.12% of PET molten mass total amount.
4. direct fabrics according to claim 2 brighten the manufacture method of anti-ultraviolet function polyester staple fiber, it is characterized in that: described inorganic ultrafine additive is titanium dioxide, its average grain diameter is 0.28 μm, is greater than 0.20, and the quantity being less than 0.36 μm is greater than 99.0%.
5. direct fabrics according to claim 3 brighten the manufacture method of anti-ultraviolet function polyester staple fiber, it is characterized in that: described auxiliary fiber stretching additive is barium sulfate, its average grain diameter is 1.0 μm, is greater than 0.8, and the quantity being less than 1.2 μm is greater than 99.0%.
6. direct fabrics according to claim 1 brighten the manufacture method of anti-ultraviolet function polyester staple fiber, it is characterized in that: described diphenylethyllene dibenzoxazine class organic monomer is 2,2-(4,4-diphenylethyllene) dibenzoxazine.
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CN112267161A (en) * | 2020-10-12 | 2021-01-26 | 浙江尤夫科技工业有限公司 | Preparation method of ultraviolet aging resistant polyester industrial yarn |
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Application publication date: 20150610 |