CN112267161A - Preparation method of ultraviolet aging resistant polyester industrial yarn - Google Patents
Preparation method of ultraviolet aging resistant polyester industrial yarn Download PDFInfo
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- CN112267161A CN112267161A CN202011084686.9A CN202011084686A CN112267161A CN 112267161 A CN112267161 A CN 112267161A CN 202011084686 A CN202011084686 A CN 202011084686A CN 112267161 A CN112267161 A CN 112267161A
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- industrial yarn
- polyester industrial
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- ultraviolet
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- 229920000728 polyester Polymers 0.000 title claims abstract description 107
- 230000032683 aging Effects 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000009987 spinning Methods 0.000 claims abstract description 52
- 238000009998 heat setting Methods 0.000 claims abstract description 40
- 238000002425 crystallisation Methods 0.000 claims abstract description 22
- 230000008025 crystallization Effects 0.000 claims abstract description 22
- 230000002745 absorbent Effects 0.000 claims abstract description 19
- 239000002250 absorbent Substances 0.000 claims abstract description 19
- 230000014759 maintenance of location Effects 0.000 claims abstract description 15
- 239000002667 nucleating agent Substances 0.000 claims abstract description 15
- 238000010561 standard procedure Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical group [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 22
- LEVFXWNQQSSNAC-UHFFFAOYSA-N 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-hexoxyphenol Chemical group OC1=CC(OCCCCCC)=CC=C1C1=NC(C=2C=CC=CC=2)=NC(C=2C=CC=CC=2)=N1 LEVFXWNQQSSNAC-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 9
- ZMWRRFHBXARRRT-UHFFFAOYSA-N 2-(benzotriazol-2-yl)-4,6-bis(2-methylbutan-2-yl)phenol Chemical compound CCC(C)(C)C1=CC(C(C)(C)CC)=CC(N2N=C3C=CC=CC3=N2)=C1O ZMWRRFHBXARRRT-UHFFFAOYSA-N 0.000 claims description 8
- UWSMKYBKUPAEJQ-UHFFFAOYSA-N 5-Chloro-2-(3,5-di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O UWSMKYBKUPAEJQ-UHFFFAOYSA-N 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- HWSDZRBDEVTBSM-UHFFFAOYSA-N [4-(5-chlorobenzotriazol-2-yl)-3-hydroxyphenyl] benzoate Chemical compound C=1C=C(N2N=C3C=C(Cl)C=CC3=N2)C(O)=CC=1OC(=O)C1=CC=CC=C1 HWSDZRBDEVTBSM-UHFFFAOYSA-N 0.000 claims description 8
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 8
- ZSSVCEUEVMALRD-UHFFFAOYSA-N 2-[4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl]-5-(octyloxy)phenol Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C1=NC(C=2C(=CC(C)=CC=2)C)=NC(C=2C(=CC(C)=CC=2)C)=N1 ZSSVCEUEVMALRD-UHFFFAOYSA-N 0.000 claims description 7
- MCPKSFINULVDNX-UHFFFAOYSA-N drometrizole Chemical compound CC1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 MCPKSFINULVDNX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- -1 polyethylene terephthalate Polymers 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 2
- WSXIMVDZMNWNRF-UHFFFAOYSA-N antimony;ethane-1,2-diol Chemical compound [Sb].OCCO WSXIMVDZMNWNRF-UHFFFAOYSA-N 0.000 claims description 2
- JVLRYPRBKSMEBF-UHFFFAOYSA-K diacetyloxystibanyl acetate Chemical compound [Sb+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JVLRYPRBKSMEBF-UHFFFAOYSA-K 0.000 claims description 2
- KRXBVZUTZPDWQI-UHFFFAOYSA-N ethane-1,2-diol;titanium Chemical compound [Ti].OCCO KRXBVZUTZPDWQI-UHFFFAOYSA-N 0.000 claims description 2
- GYUPBLLGIHQRGT-UHFFFAOYSA-N pentane-2,4-dione;titanium Chemical compound [Ti].CC(=O)CC(C)=O GYUPBLLGIHQRGT-UHFFFAOYSA-N 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- GGUBFICZYGKNTD-UHFFFAOYSA-N triethyl phosphonoacetate Chemical compound CCOC(=O)CP(=O)(OCC)OCC GGUBFICZYGKNTD-UHFFFAOYSA-N 0.000 claims description 2
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000004594 Masterbatch (MB) Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 238000006116 polymerization reaction Methods 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 238000002464 physical blending Methods 0.000 description 2
- NGKNMHFWZMHABQ-UHFFFAOYSA-N 4-chloro-2h-benzotriazole Chemical compound ClC1=CC=CC2=NNN=C12 NGKNMHFWZMHABQ-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010036 direct spinning Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000010035 extrusion spinning Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
The invention relates to a preparation method of an anti-ultraviolet aging polyester industrial yarn, which takes an organic ultraviolet absorbent, a crystallization nucleating agent and high-viscosity polyester as main raw materials, and prepares the anti-ultraviolet aging high-strength polyester industrial yarn after spinning forming, hot stretching and heat setting; wherein the heat setting temperature is 170-195 ℃, and the overfeed rate of the heat setting is + 0.8-2.0%; the specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 550-3300 dtex/192-384 f, and after the yarn is irradiated for 500 hours according to the standard method of GB/T16422 part 3, the breaking strength retention rate is 65-80%; according to the test of GB/T16604 and 2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 7.2-8.8 cN/dtex, and the dry heat shrinkage rate is less than or equal to 2.5%. The anti-ultraviolet aging high-strength polyester industrial yarn prepared by the invention is stable, high in breaking strength and good in anti-ultraviolet effect.
Description
Technical Field
The invention belongs to the technical field of polyester industrial yarns, and relates to a preparation method of an ultraviolet aging resistant polyester industrial yarn.
Background
The polyester industrial yarn has the advantages of high strength, large modulus, small elongation, good heat resistance, impact resistance, good fatigue resistance and the like, is widely applied to the fields of high-pressure water hoses, industrial cloth, geogrids, waterproof materials, cord fabric, advertising lamp box cloth, membrane structure materials for buildings, hoisting belts, safety airbags, covering cloth, conveying belts, other reinforcing materials and the like, is subjected to the action of environmental factors such as sunlight, rainwater, damp heat and the like in the application process, influences the service life of the polyester industrial yarn, and directly relates to the environmental protection resources of the use cost of the polyester industrial yarn and products and the safety problem of the service period; although the ultraviolet aging resistance of the polyester industrial yarn is inferior to that of polyacrylonitrile fiber, certain defects exist. Therefore, the development of the ultraviolet aging resistant polyester industrial yarn can fully meet the application requirements of the yarn in the aspects of marine cloth and cables, wind canvases, roof materials, sun-shading cloth, awnings, tents, geotextiles and the like, the excellent ultraviolet stability is beneficial to reducing the decay rate of terminal products in outdoor application, improving the strength retention rate, prolonging the service life of the terminal products under severe outdoor environmental conditions, and not only can improve the service safety of products, but also can save resources.
In order to prepare polyester fibers resistant to ultraviolet aging, light stabilizers are generally added during the polymerization, forming process or post-treatment thereof, wherein the addition of light stabilizers during the polymerization or forming process has a long-lasting effective characteristic. The most effective additive is carbon black (patent CN102864518A), and although polyester fibers with high strength retention rate and good ultraviolet aging resistance can be prepared, the most effective additive has the defect that only black industrial yarns can be prepared and the demand of market diversification cannot be met. In the other method, the polyester fiber for preventing ultraviolet transmission can be prepared by adding inorganic ultraviolet shielding agents such as nano titanium dioxide, nano silicon dioxide and the like, but the reflected ultraviolet of the fiber prepared by utilizing the ultraviolet reflection principle is easier to degrade the polyester and influence the strength retention rate of the polyester. At present, the addition of the organic ultraviolet absorbent is an effective method for preparing the ultraviolet aging resistant polyester fiber in principle. The dispersive ultraviolet absorbent OB-1 is added into the polyester, the high molecular weight ultraviolet aging resistant polyester is prepared by solid phase tackification, the strength of the polyester fiber prepared by spinning is 6.8cN/dtex, and the requirement of high-strength industrial yarn can not be met. The addition of the fusible organic ultraviolet absorbent UV-1577 by an in-situ polymerization method can effectively improve the dispersibility of the organic additive, and can meet the preparation requirements of high-strength industrial yarns and the requirements of ultraviolet aging resistance, but the in-situ polymerization method is inflexible, the organic ultraviolet absorbent needs to pass through all process equipment of a polymerization device, conveying, tackifying and extrusion spinning, the production switching between different products is inflexible, a large amount of transition materials can be generated, the production efficiency is influenced, and the production cost is greatly increased; and the strength of the ultraviolet aging resistant polyester fiber prepared by simply blending UV-1577 and high-viscosity polyester can not meet the requirement of high-strength industrial yarn.
Therefore, the problems in the prior art are: (1) the carbon black has obvious ultraviolet aging resistant effect, but has single color; (2) the non-black inorganic oxide is easy to degrade polyester under the ultraviolet aging condition, and the fiber strength retention rate under the ultraviolet aging condition is influenced; (3) the non-black dispersed organic ultraviolet absorbent is not easy to disperse in the high-viscosity polyester, and the fiber strength is influenced; (4) the fusible organic ultraviolet absorbent is easy to influence the fiber strength by simple physical blending, and the production by adopting an in-situ polymerization method has large limitation and inflexibility.
Therefore, the research on the simple and feasible preparation method for improving the strength of the ultraviolet aging resistant high-strength polyester industrial yarn is of great significance.
Disclosure of Invention
Aiming at the problems of low strength of fiber prepared by a simple physical blending method, large production limitation of an in-situ polymerization method, inflexibility and the like in the prior art, the invention provides a preparation method of an anti-ultraviolet aging high-strength polyester industrial yarn; the method aims to adopt high-viscosity polyester containing organic ultraviolet absorbent and added with crystallization nucleating agent as raw material, design new stretching and heat setting processes, and improve fiber strength to obtain the ultraviolet aging resistant high-strength polyester industrial yarn; the new stretching and heat setting process comprises the following steps: the addition of the organic ultraviolet absorbent reduces the crystallinity and orientation degree of the polyester, which causes the relative reduction of the fiber strength, on the basis, the crystallization nucleating agent is simultaneously added, and based on the characteristics of the crystallization nucleating agent that the crystallization temperature of the fiber is increased, the crystallinity is increased and the grain size is small, a new heat setting process is designed, the heat setting temperature is increased, the heat setting tension of the fiber is reduced due to the increase of the temperature, the overfeed rate is reduced, namely the speed of the last roller is increased, and the fiber strength is improved under the condition of ensuring lower dry heat shrinkage rate.
In order to achieve the purpose, the invention adopts the following scheme:
a preparation method of anti-ultraviolet aging polyester industrial yarn takes organic ultraviolet absorbent, crystallization nucleating agent and high-viscosity polyester (the viscosity range of the high-viscosity polyester is generally more than 0.72dL/g) as main raw materials, and after spinning forming, hot stretching and heat setting, the anti-ultraviolet aging high-strength polyester industrial yarn is prepared;
the temperature of heat setting is 170-195 ℃, and the overfeed rate of heat setting is + 0.8-2.0% (the temperature of heat setting is controlled by the last heating roller, the temperature of heat setting is the temperature of the last heating roller, when the overfeed rate is positive, loose heat setting is represented, and when the overfeed rate is negative, tight heat setting is represented).
As a preferred technical scheme:
according to the preparation method of the anti-ultraviolet aging polyester industrial yarn, the spinning melt formed by the raw materials contains 0.1-1.0 wt% of the organic ultraviolet absorbent and 0.1-0.5 wt% of the crystallization nucleating agent.
According to the preparation method of the anti-ultraviolet aging polyester industrial yarn, the raw materials also comprise the catalyst and the stabilizer, and the content of the catalyst and the content of the stabilizer in the spinning melt formed by the raw materials are respectively 0.02-0.05 wt% and 0.02-0.05 wt%.
The content of the organic ultraviolet absorbent is equal to the mass of the organic ultraviolet absorbent/the total mass of the spinning melt is equal to 100 percent;
the content of the crystallization nucleating agent is equal to the mass of the crystallization nucleating agent/the total mass of the spinning melt is equal to 100 percent;
catalyst content ═ catalyst mass/total mass of spinning melt 100%;
stabilizer content-stabilizer mass/total mass of spinning melt 100%.
According to the preparation method of the anti-ultraviolet aging polyester industrial yarn, the high-viscosity polyester is polyethylene terephthalate with the intrinsic viscosity of 0.85-1.10 dL/g.
In the method for preparing the ultraviolet aging resistant polyester industrial yarn, the organic ultraviolet absorbent is 2- (4, 6-diphenyl-1, 3, 5-triazin-2-yl) -5- [ (hexyl) oxy ] -phenol (UV-1577), 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol (UV-1164), 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole (UV-P), 2- (2 '-hydroxy-3', 5 'bis (a, a-dimethylbenzyl) phenyl) benzotriazole (UV-234), 2' - (2 '-hydroxy-3' -tert-butyl-5 '-methylphenyl) -5' -methyl phenyl) -one of chlorobenzotriazole (UV-326), 2- (2 '-hydroxy-3', 5 '-di-tert-butylphenyl) -5-chlorobenzotriazole (UV-327), 2- (2' -hydroxy-3 ',5' -ditert-pentylphenyl) benzotriazole (UV-328) and 2- (2 '-hydroxy-4' -benzoyloxyphenyl) -5-chlorobenzotriazole (UV-366);
the catalyst is one of antimony trioxide, ethylene glycol antimony, antimony acetate, titanium dioxide, ethylene glycol titanium and acetylacetone titanium;
the stabilizer is one of trimethyl phosphate, phosphoric acid and triethyl phosphonoacetate.
According to the preparation method of the anti-ultraviolet-aging polyester industrial yarn, the crystallization nucleating agent is nano barium sulfate with the average particle size of 50-80 nm (measured by a TEM method).
According to the preparation method of the ultraviolet aging resistant polyester industrial yarn, the spinning temperature is 295-310 ℃ during spinning forming; the temperature of the heat setting roller is 170-195 ℃, the speed of the heat setting roller is 3100-3700 m/min, the speed of the heating roller before the heat setting roller is 3200-3600 m/min, the temperature of the heating roller before the heat setting roller is 210-235 ℃, the heat setting roller is the last heating roller in the spinning equipment, the heat setting temperature corresponds to the temperature of the last heating roller, and the overfeed rate of the heat setting is (the speed of the heating roller before the heat setting roller-the speed of the heat setting roller)/the speed of the heating roller before the heat setting roller is 100%.
The preparation method of the ultraviolet aging resistant polyester industrial yarn is characterized in that the specification of the ultraviolet aging resistant high-strength polyester industrial yarn is 550-3300 dtex/192-384 f.
The preparation method of the anti-ultraviolet aging polyester industrial yarn is characterized in that after the anti-ultraviolet aging high-strength polyester industrial yarn is irradiated for 500 hours according to the standard method of the No. 3 GB/T16422, the breaking strength retention rate is 65-80%.
The preparation method of the ultraviolet aging resistant polyester industrial yarn is characterized in that the breaking strength of the ultraviolet aging resistant polyester high-strength industrial yarn is 7.2-8.8 cN/dtex, and the dry heat shrinkage rate is less than or equal to 2.5 percent according to the test of GB/T16604-2017 standard.
The principle of the invention is as follows:
because the organic ultraviolet absorbent is generally mixed with the polyester in the prior art, the ordered arrangement among polyester molecular chains is hindered, the crystallinity and the orientation degree of the fiber are reduced under the same spinning, drawing and heat setting process conditions, and the breaking strength of the fiber is reduced.
According to the invention, the nano barium sulfate is added while the organic ultraviolet absorbent is added, and the nano barium sulfate is used as a crystallization nucleating agent, so that the effects of reducing the polyester molecular chain segment crystallization activation energy and improving the crystallinity and the crystallization speed are achieved, and the negative effects brought by the organic ultraviolet absorbent can be compensated; but the addition of the crystallization nucleating agent simultaneously increases the temperature of polyester crystallization, and based on the characteristics of the crystallization nucleating agent that the crystallization temperature of the fiber is increased, the crystallization degree is increased and the grain size is small, a new heat setting process is designed, the heat setting temperature is increased, the heat setting tension of the fiber is reduced due to the increase of the temperature, and further, after the heat setting temperature is increased, the oriented polyester molecular chain segments are easy to shrink in the stretching stage, so that the speed of a heat setting roller (namely the last heating roller) is increased, the overfeed rate is reduced, the polyester molecular chain segments are forced to be arranged along the axial direction of the fiber, the degree of chain segment orientation is increased while the crystallization degree is increased, the fiber strength is increased under the condition of ensuring lower dry heat shrinkage rate, and the high-strength ultraviolet aging resistant high-strength polyester industrial yarn is obtained.
Advantageous effects
(1) The preparation method of the ultraviolet aging resistant polyester industrial yarn has a unique process, and the prepared ultraviolet aging resistant high-strength polyester industrial yarn is stable, high in breaking strength and good in ultraviolet resistance effect.
(2) The preparation method of the ultraviolet aging resistant polyester industrial yarn is simple and easy to implement and has great popularization value.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The fifth roller in the following examples is a heat setting roller, and the fourth roller is a previous heating roller of the heat setting roller;
the overfeed rate for heat setting in the following examples is (speed of the fourth roll-speed of the fifth roll)/speed of the fourth roll 100%.
The water content in the following examples is a mass percentage of water.
The correspondence between the names of the organic ultraviolet absorbers used in the examples and the product numbers thereof is shown in Table 1.
TABLE 1
| Organic ultraviolet absorber | Product numbering |
| 2- (4, 6-Diphenyl-1, 3, 5-triazin-2-yl) -5- [ (hexyl) oxy]-phenol | UV-1577 |
| 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol | UV-1164 |
| 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole | UV-P |
| 2- (2' -hydroxy-3 ',5' -bis (a, a-dimethylbenzyl) phenyl) benzotriazole | UV-234 |
| 2'- (2' -hydroxy-3 '-tert-butyl-5' -methylphenyl) -5-chlorobenzotriazole | UV-326 |
| 2- (2' -hydroxy-3 ',5' -di-tert-butylphenyl) -5-chlorobenzotriazole | UV-327 |
| 2- (2' -hydroxy-3 ',5' -ditert-pentylphenyl) benzotriazoles | UV-328 |
| 2- (2 '-hydroxy-4' -benzoyloxyphenyl) -5-chlorobenzotriazole | UV-366 |
Example 1
UV-1577, barium sulfate with the average particle size of 50nm and polyester with the intrinsic viscosity of 0.85dL/g are blended to prepare master batches, wherein the UV-1577 accounts for 20 wt% of the master batches, and the nano barium sulfate accounts for 10 wt%.
Polyester chips (water content 0.008%) with an intrinsic viscosity of 0.85dL/g and the above dried master batch (water content 0.008%) were mixed before a screw, and extruded by the screw to obtain a spinning melt, the master batch was added in an amount of 1 wt% so that the content of UV-1577 in the spinning melt was 0.2 wt%, and the content of nano barium sulfate was 0.1 wt%. The spinning temperature is 295 ℃, the specification of a spinneret plate is 192 holes, the pump supply is 340g/min, the mixture is extruded and cooled to form by the spinneret plate, the first roller speed is 500m/min, the first roller temperature is 60 ℃, the second roller speed is 550m/min, the second roller temperature is 90 ℃, the third roller speed is 2000m/min, the third roller temperature is 120 ℃, the fourth roller speed is 3260m/min, the fourth roller temperature is 210 ℃, the fifth roller temperature is 170 ℃, the fifth roller speed is 3240m/min, and the overfeed rate is 0.61%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 1100dtex/192 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 80%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 7.6cN/dtex, the dry heat shrinkage rate is 1.2 percent, and the elongation at break is 16.1 percent.
Example 2
UV-P, barium sulfate with the average particle size of 70nm and polyester with the intrinsic viscosity of 0.99dL/g are blended to prepare master batches, wherein the UV-1577 accounts for 20 wt% of the master batches, and the nano barium sulfate accounts for 10 wt%.
Mixing polyester chips (with the water content of 0.007%) with the inherent viscosity of 0.99dL/g and the dried master batches (with the water content of 0.008%) before a screw, and extruding the mixture through the screw to obtain a spinning melt, wherein the addition amount of the master batches is 1.5 wt%, so that the content of UV-1577 in the spinning melt is 0.3 wt%, and the content of nano barium sulfate is 0.15 wt%. The spinning temperature is 296 ℃, the specification of a spinneret plate is 192 holes, the pump supply is 520g/min, the mixture is extruded and cooled to form by the spinneret plate, the first roller speed is 694m/min, the first roller temperature is 61 ℃, the second roller speed is 895m/min, the second roller temperature is 96 ℃, the third roller speed is 2389m/min, the third roller temperature is 128 ℃, the fourth roller speed is 3459m/min, the fourth roller temperature is 221 ℃, the fifth roller temperature is 180 ℃, the fifth roller speed is 3450m/min, and the overfeed rate is 0.26%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 1670dtex/192 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 78%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 7.8cN/dtex, the dry heat shrinkage rate is 1.8 percent, and the elongation at break is 15.9 percent.
Example 3
UV-234, barium sulfate with the average particle size of 66nm and polyester with the intrinsic viscosity of 1.03dL/g are blended to prepare master batches, wherein the UV-234 accounts for 20 wt% of the master batches, and the nano barium sulfate accounts for 10 wt%.
Polyester chips (water content 0.009%) having an intrinsic viscosity of 1.03dL/g and the above-mentioned dried master batch (water content 0.007%) were mixed before the screw and extruded through the screw to obtain a spinning melt, the addition amount of the master batch was 3 wt%, so that the content of UV-234 in the spinning melt was 0.6 wt% and the content of nano barium sulfate was 0.3 wt%. The spinning temperature is 303 ℃, the specification of a spinneret plate is 192 holes, the pump supply is 520g/min, the mixture is extruded and cooled to form by the spinneret plate, the first roller speed is 651m/min, the first roller temperature is 63 ℃, the second roller speed is 824m/min, the second roller temperature is 98 ℃, the third roller speed is 2111m/min, the third roller temperature is 130 ℃, the fourth roller speed is 3315m/min, the fourth roller temperature is 230 ℃, the fifth roller temperature is 181 ℃, the fifth roller speed is 3310m/min, and the overfeed rate is 0.15%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 1670dtex/192 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 72%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 8.2cN/dtex, the dry heat shrinkage rate is 2.1 percent, and the elongation at break is 15.2 percent.
Example 4
UV-326, barium sulfate with the average grain diameter of 70nm and polyester with the intrinsic viscosity of 1.03dL/g are blended to prepare master batches, wherein the UV-326 accounts for 20 wt% of the master batches, and the nano barium sulfate accounts for 10 wt%.
Polyester chips (water content 0.007%) with an intrinsic viscosity of 1.03dL/g and the dried master batch (water content 0.007%) were mixed in front of a screw and extruded through the screw to obtain a spinning melt, wherein the addition amount of the master batch was 4 wt%, so that the content of UV-326 in the spinning melt was 0.8 wt% and the content of nano barium sulfate was 0.4 wt%. The spinning temperature is 303 ℃, the specification of a spinneret plate is 384 holes, the pump supply is 682g/min, the spinning is carried out through the spinneret plate, the spinning is carried out, the cooling forming is carried out, the first roller speed is 656m/min, the first roller temperature is 62 ℃, the second roller speed is 832m/min, the second roller temperature is 97 ℃, the third roller speed is 2385m/min, the third roller temperature is 129 ℃, the fourth roller speed is 3358m/min, the fourth roller temperature is 225 ℃, the fifth roller temperature is 174 ℃, the fifth roller speed is 3348m/min, and the overfeed rate is 0.3%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 2200dtex/384 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 79%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 7.7cN/dtex, the dry heat shrinkage rate is 1.6 percent, and the elongation at break is 16.0 percent.
Example 5
UV-327, barium sulfate with the average particle size of 74nm and polyester with the intrinsic viscosity of 1.04dL/g are blended to prepare master batches, wherein the UV-327 accounts for 30 wt% of the master batches, and the nano barium sulfate accounts for 10 wt%.
Polyester chips (water content 0.008%) with an intrinsic viscosity of 1.04dL/g and the above dried master batch (water content 0.008%) were mixed before a screw, and extruded by the screw to obtain a spinning melt, the master batch was added in an amount of 1 wt% so that the content of UV-327 in the spinning melt was 0.3 wt% and the content of nano barium sulfate was 0.1 wt%. The spinning temperature is 303 ℃, the specification of a spinneret plate is 384 holes, the pump supply is 682g/min, the spinning is carried out through the spinneret plate, the spinning is carried out, the cooling forming is carried out, the first roller speed is 570m/min, the first roller temperature is 69 ℃, the second roller speed is 601m/min, the second roller temperature is 100 ℃, the third roller speed is 2052m/min, the third roller temperature is 132 ℃, the fourth thermal speed is 3245m/min, the fourth roller temperature is 233 ℃, the fifth roller temperature is 193 ℃, the fifth roller speed is 3251m/min, and the overfeed rate is-0.2%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 2200dtex/384 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 67%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 8.5cN/dtex, the dry heat shrinkage rate is 2.3 percent, and the elongation at break is 14.7 percent.
Example 6
UV-328, barium sulfate with the average particle size of 58nm and polyester with the intrinsic viscosity of 1.05dL/g are blended to prepare master batches, wherein the UV-328 accounts for 30 wt% of the master batches, and the nano barium sulfate accounts for 10 wt%.
Polyester chips (water content 0.007%) having an intrinsic viscosity of 1.05dL/g and the above-described dried master batch (water content 0.009%) were mixed before the screw and extruded through the screw to obtain a spinning melt, and the master batch was added in an amount of 2 wt% so that the content of UV-328 in the spinning melt was 0.6 wt% and the content of nano barium sulfate was 0.2 wt%. The spinning temperature is 305 ℃, the specification of a spinneret plate is 384 holes, the pump supply is 1023g/min, the fiber is extruded and cooled to form by the spinneret plate, the first roller speed is 551m/min, the first roller temperature is 70 ℃, the second roller speed is 574m/min, the second roller temperature is 104 ℃, the third roller speed is 2018m/min, the third roller temperature is 134 ℃, the fourth roller speed is 3180m/min, the fourth roller temperature is 234 ℃, the fifth roller temperature is 174 ℃, the fifth roller speed is 3196m/min, and the overfeed rate is-0.5%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 3300dtex/384 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 66%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 8.7cN/dtex, the dry heat shrinkage rate is 2.4 percent, and the elongation at break is 13.8 percent.
Example 7
Mixing UV-1164 barium sulfate with the average particle size of 58nm with ethylene glycol, terephthalic acid (the molar ratio of the ethylene glycol to the terephthalic acid is 1.2), phosphoric acid and antimony trioxide, carrying out esterification and polycondensation to obtain polyethylene terephthalate with the intrinsic viscosity of 0.78dL/g, carrying out liquid phase tackifying to obtain the polyethylene terephthalate with the intrinsic viscosity of 1.03dL/g, and spinning by taking the polyethylene terephthalate as a spinning melt, wherein the content of the antimony trioxide is 0.04 wt% of the spinning melt; the phosphoric acid content is 0.03 wt% of the spinning melt; the UV-1164 content is 0.7 wt% of the spinning melt; the content of nano barium sulfate is 0.3 wt% of the spinning melt. The prepared melt is sent to a spinning machine for direct spinning and forming, the spinning temperature is 300 ℃, the specification of a spinneret plate is 384 holes, the mercury supply is 680g/min, the first roller speed is 550m/min, the first roller temperature is 65 ℃, the second roller speed is 600m/min, the second roller temperature is 95 ℃, the third roller speed is 2100m/min, the third roller temperature is 130 ℃, the fourth roller speed is 3200m/min, the fourth roller temperature is 215 ℃, the fifth roller temperature is 195 ℃, the fifth roller speed is 3254m/min, and the overfeed rate is-1.7%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 2200dtex/384 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 65%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 8.8cN/dtex, the dry heat shrinkage rate is 2.5 percent, and the elongation at break is 13.3 percent.
Example 8
UV-366, barium sulfate with the average particle size of 72nm and polyester with the intrinsic viscosity of 0.87dL/g are blended to prepare master batches, wherein the UV-366 accounts for 20 wt% of the master batches, and the nano barium sulfate accounts for 10 wt%.
Adding the dried master batch (with the water content of 0.008%) in front of a screw, wherein the adding amount is 2 wt% of the total amount of the spinning melt, melting the master batch by the screw, and mixing the master batch with a polyester melt with the intrinsic viscosity of 0.87dL/g to obtain the spinning melt, so that the content of UV-366 in the spinning melt is 0.4 wt%, and the content of nano barium sulfate is 0.2 wt%. The spinning temperature is 295 ℃, the specification of a spinneret plate is 192 holes, the pump supply is 340g/min, the mixture is extruded and cooled to form by the spinneret plate, the first roller speed is 608m/min, the first roller temperature is 60 ℃, the second roller speed is 806m/min, the second roller temperature is 90 ℃, the third roller speed is 2097m/min, the third roller temperature is 122 ℃, the fourth roller speed is 3313m/min, the fourth roller temperature is 214 ℃, the fifth roller speed is 3299m/min, the fifth roller temperature is 186 ℃, and the overfeed rate is 0.42%.
The specification of the prepared ultraviolet aging resistant high-strength polyester industrial yarn is 1100dtex/192 f; the retention of the breaking strength after 500 hours of irradiation according to the standard method of GB/T16422 part 3 is 79%.
According to the test of GB/T16604-2017 standard, the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 7.6cN/dtex, the dry heat shrinkage rate is 1.4 percent, and the elongation at break is 15.9 percent.
Claims (10)
1. A preparation method of anti-ultraviolet aging polyester industrial yarn is characterized by comprising the following steps: taking an organic ultraviolet absorbent, a crystallization nucleating agent and high-viscosity polyester as main raw materials, and preparing the anti-ultraviolet aging high-strength polyester industrial yarn after spinning forming, hot stretching and heat setting;
the temperature of heat setting is 170-195 ℃, and the overfeed rate of heat setting is + 0.8-2.0%.
2. The method for preparing the anti-ultraviolet-aging polyester industrial yarn as claimed in claim 1, wherein the spinning melt formed by the raw materials contains 0.1-1.0 wt% of the organic ultraviolet absorbent and 0.1-0.5 wt% of the crystallization nucleating agent.
3. The preparation method of the ultraviolet aging resistant polyester industrial yarn as claimed in claim 1, wherein the raw materials further comprise a catalyst and a stabilizer, and the content of the catalyst and the content of the stabilizer in the spinning melt formed by the raw materials are respectively 0.02 to 0.05 wt% and 0.02 to 0.05 wt%.
4. The preparation method of the ultraviolet aging resistant polyester industrial yarn as claimed in claim 1, wherein the high viscosity polyester is polyethylene terephthalate with an intrinsic viscosity of 0.85-1.10 dL/g.
5. The method for preparing the industrial yarn of anti-uv-aging polyester according to claim 3, wherein the organic uv absorber is 2- (4, 6-diphenyl-1, 3, 5-triazin-2-yl) -5- [ (hexyl) oxy ] -phenol, 2- (4, 6-bis (2, 4-dimethylphenyl) -1,3, 5-triazin-2-yl) -5-octyloxyphenol, 2- (2' -hydroxy-5 ' -methylphenyl) benzotriazole, 2- (2' -hydroxy-3 ',5' bis (a, a-dimethylbenzyl) phenyl) benzotriazole, 2' - (2' -hydroxy-3 ' -tert-butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, or a mixture thereof, One of 2- (2 '-hydroxy-3', 5 '-di-tert-butylphenyl) -5-chlorobenzotriazole, 2- (2' -hydroxy-3 ',5' -ditert-pentylphenyl) benzotriazole and 2- (2 '-hydroxy-4' -benzoyloxyphenyl) -5-chlorobenzotriazole;
the catalyst is one of antimony trioxide, ethylene glycol antimony, antimony acetate, titanium dioxide, ethylene glycol titanium and acetylacetone titanium;
the stabilizer is one of trimethyl phosphate, phosphoric acid and triethyl phosphonoacetate.
6. The preparation method of the ultraviolet aging resistant polyester industrial yarn as claimed in claim 1, wherein the crystallization nucleating agent is barium sulfate with an average particle size of 50-80 nm.
7. The preparation method of the ultraviolet aging resistant polyester industrial yarn as claimed in claim 1, wherein the spinning temperature is 295-310 ℃ during spinning forming; the speed of the heat setting roller is 3100-3700 m/min, the speed of the heating roller before the heat setting roller is 3200-3600 m/min, and the temperature of the heating roller before the heat setting roller is 210-235 ℃.
8. The preparation method of the ultraviolet aging resistant polyester industrial yarn as claimed in claim 1, wherein the specification of the ultraviolet aging resistant high-strength polyester industrial yarn is 550 to 3300dtex/192 to 384 f.
9. The preparation method of the ultraviolet aging resistant polyester industrial yarn as claimed in claim 1, wherein the breaking strength retention rate of the ultraviolet aging resistant high-strength polyester industrial yarn is 65-80% after the ultraviolet aging resistant high-strength polyester industrial yarn is irradiated for 500 hours according to the standard method of GB/T16422 part 3.
10. The preparation method of the ultraviolet aging resistant polyester industrial yarn as claimed in claim 1, wherein the breaking strength of the ultraviolet aging resistant high-strength polyester industrial yarn is 7.2-8.8 cN/dtex and the dry heat shrinkage rate is less than or equal to 2.5% according to GB/T16604-2017 standard test.
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| JP2004244459A (en) * | 2003-02-12 | 2004-09-02 | Nan Ya Plast Corp | Polyester material used in heat-resistant pet bottle production |
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| CN104060340A (en) * | 2014-07-06 | 2014-09-24 | 杨帆 | Polyester industrial yarn machining method |
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| CN104963024A (en) * | 2015-06-18 | 2015-10-07 | 江苏江南高纤股份有限公司 | Polyester directly-spun short fiber for hydrolysis-resistant and photoaging-resistant industry and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004244459A (en) * | 2003-02-12 | 2004-09-02 | Nan Ya Plast Corp | Polyester material used in heat-resistant pet bottle production |
| CN101265611A (en) * | 2008-04-02 | 2008-09-17 | 谭亦武 | Engineering fibre manufacturing technique for polyester reclaiming material road |
| CN104060340A (en) * | 2014-07-06 | 2014-09-24 | 杨帆 | Polyester industrial yarn machining method |
| CN104695044A (en) * | 2015-03-17 | 2015-06-10 | 江苏江南高纤股份有限公司 | Manufacturing method of direct-spinning whitening uvioresistant functional polyester staple fibers |
| CN104963024A (en) * | 2015-06-18 | 2015-10-07 | 江苏江南高纤股份有限公司 | Polyester directly-spun short fiber for hydrolysis-resistant and photoaging-resistant industry and preparation method thereof |
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