CN108532027B - PA/PVA sea-island fiber with water-soluble sea phase and production process thereof - Google Patents
PA/PVA sea-island fiber with water-soluble sea phase and production process thereof Download PDFInfo
- Publication number
- CN108532027B CN108532027B CN201810372919.1A CN201810372919A CN108532027B CN 108532027 B CN108532027 B CN 108532027B CN 201810372919 A CN201810372919 A CN 201810372919A CN 108532027 B CN108532027 B CN 108532027B
- Authority
- CN
- China
- Prior art keywords
- sea
- pva
- island
- fiber
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 143
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 184
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 184
- 239000002994 raw material Substances 0.000 claims abstract description 46
- 238000002844 melting Methods 0.000 claims abstract description 40
- 230000008018 melting Effects 0.000 claims abstract description 40
- -1 salt compound Chemical class 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 29
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 29
- 239000003607 modifier Substances 0.000 claims abstract description 28
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 26
- 239000000314 lubricant Substances 0.000 claims abstract description 22
- 229920005862 polyol Polymers 0.000 claims abstract description 20
- 150000003077 polyols Chemical class 0.000 claims abstract description 20
- 239000008367 deionised water Substances 0.000 claims abstract description 17
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 17
- 238000009998 heat setting Methods 0.000 claims abstract description 3
- 238000009987 spinning Methods 0.000 claims description 41
- 239000000155 melt Substances 0.000 claims description 38
- 238000001035 drying Methods 0.000 claims description 34
- 239000002131 composite material Substances 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 238000001125 extrusion Methods 0.000 claims description 18
- 229910001868 water Inorganic materials 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 6
- 239000008116 calcium stearate Substances 0.000 claims description 6
- 235000013539 calcium stearate Nutrition 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N N-phenyl amine Natural products NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 230000006855 networking Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 238000000354 decomposition reaction Methods 0.000 description 8
- 238000007792 addition Methods 0.000 description 7
- 238000002074 melt spinning Methods 0.000 description 7
- 239000003513 alkali Substances 0.000 description 6
- 238000013329 compounding Methods 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 150000005846 sugar alcohols Polymers 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007500 overflow downdraw method Methods 0.000 description 3
- 238000005453 pelletization Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 238000004383 yellowing Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
- 239000002023 wood 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
-
- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- 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
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/80—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
Abstract
The invention discloses a PA/PVA sea-island fiber with water-soluble sea phase, which is prepared by taking PA as an island phase component and PVA as a nascent fiber formed by the sea phase component, stretching and heat setting the nascent fiber to obtain the sea-island fiber, wherein the island phase component of the nascent fiber accounts for 60-85% of the cross section area of the fiber, the sea component accounts for 40-15% of the cross section area of the fiber, the fineness of the sea-island fiber is 1.6-14 dtex, the breaking strength is 3-6 cN/dtex, and the water-soluble PVA master batch is prepared by fusing the following raw materials in parts by weight: 50-70 parts of polyvinyl alcohol; 15-25 parts of polyol or salt compound modifier; 3-7 parts of an antioxidant; 3-7 parts of a lubricant; 25-35 parts of deionized water; the invention also provides a production process of the sea-island fiber. Compared with the traditional PVA, the melting point is reduced, so that the PVA sea component can be fused and compounded with the PA with the high melting point, the problem that the PVA is decomposed when the melting point is reached is solved, and the problem that the traditional PVA can not be fused and compounded when the high-temperature PA is decomposed is solved.
Description
Technical Field
The invention relates to the technical field of superfine fibers, in particular to a PA/PVA sea-island fiber with a water-soluble sea phase and a production process thereof.
Background
The superfine fiber is attracted by people due to the properties of high coverage, soft hand feeling, comfortable wearing, soft luster, good adsorbability and the like, and is widely applied to the fields of clothes, artificial leather, building materials, adsorption and filter materials and the like. The sea-island fiber is a short-term sea-island composite fiber, and it adopts composite spinning technology to respectively use 2 fiber-forming polymers as 'island' and 'sea' components, and makes melt spinning according to different mixing ratio, then utilizes the different solubilities of these 2 components to a certain chemical solvent to dissolve out the 'sea' component and leave the 'island' component, i.e. composite superfine fiber. Sea-island fibers are classified into a solvent-dissolving type (benzene weight reduction method) and a hydrolysis-peeling type (alkali weight reduction method) according to the type of sea-phase polymer and the post-processing process. The benzene reduction method utilizes organic solvents such as toluene and the like to dissolve and remove sea phase, and has the problems of recycling of the solvents, recovery of sea components, removal of trace solvents on superfine fibers and the like; the alkali decrement adopts hot alkali hydrolysis to strip sea phase, which avoids using organic solvent and reduces environmental pollution, but still has the problems of recycling hydrolysis products, treating waste alkali liquor and the like.
In order to solve the problem of environmental pollution of sea-island fibers in removing the sea phase from the source, the project is to apply water-soluble polymer chips to the sea phase of the sea-island fibers, and then dissolve the sea phase by using hot water to prepare the superfine fibers. Among them, polyvinyl alcohol (PVA) has excellent water solubility, mechanical properties, film forming properties, emulsifying properties, organic solvent resistance and the like, is widely applied to the fields of textile, paper making, wood processing, daily chemicals, medicine, sewage treatment and the like, and is a functional polymer material with wide application. In addition, PVA is considered to be a truly biodegradable synthetic polymer that can be completely degraded by a single microorganism or symbiotic population in nature to produce CO2And H2O, is one of the most potential environmentally friendly materials. Therefore, if PVA can be used as the water-soluble sea phase of the sea-island fiber, it is expected to thoroughly solve the problem of environmental pollution caused by benzene reduction and alkali reduction of the conventional sea-island fiber from the source. However, the melting point temperature of polyvinyl alcohol is lower than the decomposition temperature, and most of polyvinyl alcohol spinning adopts a wet spinning process. This process can only be used for single-component products and not for composite spinning products. Therefore, polyvinyl alcohol must be modified to enable composite spinning.
However, PVA is a polyhydroxylated polymer, and is not melt-processable with other copolymers because it has a melting point (200 ℃ C.) sufficiently close to the decomposition temperature (200 ℃ C.) due to the formation of strong intramolecular and intermolecular hydrogen bonds between hydroxyl groups, and is decomposed and not spun by melt-spinning with polymers such as PA, PA derivatives, PA and PA derivatives. The traditional fiber forming only can be solution spinning or single-component melt spinning, can not realize composite melt spinning with island phase resin, and is a decisive factor for preventing PVA from being used for water-soluble sea phase of sea-island fibers.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of pollution caused by the preparation of composite fibers by organic solvent treatment of traditional PVA chips, realize the aim of composite melt spinning with island phase resin, enhance the production continuity and reduce the labor intensity, and provides the PA/PVA sea-island fibers with water-soluble sea phases and the production process thereof.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a PA/PVA sea-island fiber with a water-soluble sea phase is prepared by taking PA as an island phase component and PVA as a nascent fiber formed by the sea phase component, stretching and heat setting to obtain a sea-island fiber, wherein the island phase component of the nascent fiber accounts for 60-85% of the cross-sectional area of the fiber, the sea component accounts for 40-15% of the cross-sectional area of the fiber, the fineness of the sea-island fiber is 1.6-14 dtex, the breaking strength is 3-6 cN/dtex, the breaking elongation is 7-10%, the single fiber fineness of the island component is below 0.8dtex, PVA is a water-soluble PVA master batch, and the water-soluble PVA master batch is prepared by fusing the following raw materials in parts by weight:
50-70 parts of polyvinyl alcohol;
15-25 parts of polyol or salt compound modifier;
3-7 parts of an antioxidant;
3-7 parts of a lubricant;
25-35 parts of deionized water;
dissolving a polyol or salt compound modifier in deionized water, uniformly mixing the polyol or salt compound modifier with an antioxidant, a lubricant and polyvinyl alcohol, and drying to obtain a modified PVA slice, wherein the melting point of the PVA slice is 180-190 ℃; the melting range is 175 ℃ plus 195 ℃, and the thermal decomposition temperature is 210-220 ℃.
The PA/PVA sea-island fiber with the water-soluble sea phase is prepared by fusing the following raw materials in parts by weight:
60 parts of polyvinyl alcohol;
20 parts of polyol or salt compound modifier;
5 parts of an antioxidant;
5 parts of a lubricant;
30 parts of deionized water.
In the PA/PVA sea-island fiber with the water-soluble sea phase, the polyalcohol or salt compound modifier is one or more of alcohol amine, polyethylene glycol, acetate or phosphate.
The PA/PVA sea-island fiber with the water-soluble sea phase is characterized in that the antioxidant is aniline antioxidant or hindered phenol antioxidant.
In the PA/PVA sea-island fiber with the water-soluble sea phase, the hindered phenol antioxidant is beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) or beta- (3, 5-di-tert-butyl-4-hydroxy-phenyl).
The PA/PVA sea-island fiber with the water-soluble sea phase is characterized in that the lubricant is calcium stearate or polyfunctional fatty acid composite ester.
A process for producing the PA/PVA islands-in-the-sea fiber with water-soluble sea phase of claim 1, comprising the steps of:
preparation of water-soluble PVA master batch
(1) Adding polyvinyl alcohol into a vacuum feeding machine according to the corresponding weight proportion, and starting the vacuum feeding machine; sequentially injecting a polyol or salt compound modifier, an antioxidant, a lubricant and deionized water into a vacuum feeding machine according to the proportion;
(2) starting a heating valve of the vacuum feeding machine, heating to 75-85 ℃, and mixing for 80-90 minutes by a vertical conical ribbon mixer;
(3) after mixing, feeding the mixture into a screw extruder for extrusion granulation, wherein the temperature of a first area of the screw extruder is 80-95 ℃; the temperature of the second zone is 105-120 ℃; the temperature of a three area is 130-150 ℃; the temperature of the fourth area is 155-175 ℃; the temperature of the fifth zone is 180-200 ℃, and continuous strand silk is obtained;
(4) the extruded strand wires are subjected to air cooling and then are cut into particles, and particles with the particle size of 3mm are obtained;
according to the invention, a better modified PVA system is preferably selected by adding the influence of the salt compound modifier A and the polyol modifier B on the melting point, the thermal decomposition temperature, the shearing rheological property, the spinnability and the like of four kinds of PVA (PVA 1799, PVA1099, PVA0899 and PVA 0599) with different polymerization degrees, so that the melt-processable water-soluble PVA resin slice is prepared, and the stable melt spinning of the water-soluble PVA resin slice is preliminarily realized.
The preparation of the modified PVA starting material is a solid-liquid mixing process. A horizontal ribbon mixer or a vertical conical ribbon mixer or the like can be used. In combination with earlier experimental practices and considering the difficulty and easiness in discharging mixed materials, the invention adopts a better vertical conical ribbon mixer and is provided with a necessary fog type liquid spraying device, a heating device and a vacuum feeding machine. The spiral ribbon of this equipment is in mixing process with the material constantly up promotion from the bottom, thereby the material intensive mixing is ensured on the material that fog formula hydrojet device can spray liquid in mixing evenly, heating device can promote PVA to the infiltration of modifier, absorb, improves the modification effect. The device parameters that may be selected are as follows:
technical parameters of RDS series vertical conical ribbon mixer
Model specification, m3 RDS-6 RDS-8
Full volume, m 368
Working volume, m33.64.8
Power, KW 22-3030-37
And material conveying equipment is configured on the slicing production line. The powder PVA is conveyed to the spiral belt mixer by the vacuum feeding machine, and the mixed PVA modified material is conveyed to the hopper of the single-screw machine by the spiral feeding machine, so that the production continuity is enhanced, and the manual labor intensity is reduced.
Mixing PVA and modifier, and pelletizing in a single screw extruder. The single screw extruder is mainly used for extruding thermoplastic plastics, consists of a transmission mechanism, a feeding mechanism, a machine barrel, a screw, a machine head, a mouth mold and the like, has the characteristics of simple structure and low price, has small shearing degradation to polymers, and is relatively simple in operation and process control. And (5) water-cooling and pelletizing the extruded strand.
Depending on the design throughput and the characteristics of the modified PVA, namely: the PVA film has certain water absorption or water solubility, melt particles are easy to adhere, a single screw extruder with the screw diameter of 120mm and the length-diameter ratio L/D of 20 and a water-cooling stretch rod are adopted for pelletizing to prepare PVA slices, and a gantry type pelletizer is selected as the pelletizer. The following table shows the main technical parameters of the single-screw extruder:
model XJWP-120
Screw diameter (mm) phi 120
Screw long diameter (L/D) 20:1
Screw maximum speed (r/min) 45
Motor Power (kw) 110
Maximum production energy (kg/h) 700
(II) preparation of sea-island fiber
(5) The PA drying temperature is 115-125 ℃, the drying time is 4-6 hours, the PVA drying temperature is 105-110 ℃, the drying time is 4-6 hours, and the PA raw material as the island component and the water-soluble PVA master batch as the sea component are respectively subjected to melt extrusion through a screw extruder; the PA enters an A screw extruder, the extrusion proportion of the A screw extruder is 60-80%, the PVA enters a B screw extruder, and the extrusion proportion of the B screw extruder is 40-20%;
(6) respectively feeding the two extruded and melted raw material melts into a melt pipeline for heating; the heating temperature of the two raw material melts is set to ensure that the standard of island and sea is formed after the two raw material melts are respectively contacted through the distribution pipeline of the composite assembly in the spinning manifold, and the heat transfer temperature difference between the island component and the sea component is set to be 20-45 ℃;
(7) respectively feeding the two raw material melts into a spinning manifold, extruding after accurately metering by a metering pump, distributing into a composite assembly in the spinning manifold, uniformly distributing the island component into the sea component through a distribution pipeline in the composite assembly, and spraying out from the same spinneret orifice to carry out composite spinning to obtain the sea-island type nascent fiber taking PA as the island component and PVA as the sea component;
(8) stretching and post-finishing the prepared island-in-sea type nascent fiber to obtain cluster-shaped island-in-sea fiber;
(III) post-finishing of sea-island fibers
(9) And after the obtained sea-island fiber is subjected to the working procedures of cooling, drafting, oiling, drying, networking and the like, winding to obtain a final sea-island fiber finished product.
In the above process for producing the PA/PVA sea-island fiber having water-soluble sea phase, in the second step, the melt pipe temperature of the PA raw material is set to 260-285 ℃, and the melt pipe temperature of the PVA raw material is set to 145-160 ℃.
In the production process of the PA/PVA sea-island fiber with the water-soluble sea phase, in the step (II), the island component is accurately metered by the metering pump in the spinning box body in a volume percentage range of 60-80%, and the sea component is accurately metered in a volume percentage range of 40-20%.
The production process of the PA/PVA sea-island fiber with the water-soluble sea phase comprises the steps of immersing the sea-island fiber into hot water, and dissolving the sea phase component PVA in the sea-island fiber to obtain the bunched PA superfine fiber, wherein the temperature of the hot water is set to be 98-100 ℃, and the immersion time is 30 seconds-1 minute.
The PA/PVA sea-island fiber with water-soluble sea phase and the production process thereof have the advantages that: according to the invention, through molecular compounding and plasticization, an environment-friendly small molecular compound or oligomer with a complementary structure with PVA is adopted to form strong hydrogen bond compounding with PVA, the strong hydrogen bonds in and among PVA molecules are weakened, the crystallization of the PVA is inhibited, the melting point of the PVA is reduced, the thermal decomposition temperature of the PVA is increased, a thermoplastic processing window higher than 60 ℃ is obtained, other processing aids are added to realize thermoplastic processing of the PVA, and the PVA is extruded and granulated through a screw rod to prepare a PVA slice capable of being melt processed, so that a key material is provided for preparing water-reducing sea-island fibers. The modified polyvinyl alcohol is used as a water-soluble sea phase component of the sea-island fiber, and the PVA sea phase is dissolved by hot water, so that the problems of organic solvent pollution, hydrolysis product recycling and waste alkali liquor treatment and the like are solved. The problem of pollution caused by the fact that the traditional PVA slices are processed by organic solvents to prepare composite fibers is solved, the purpose of composite melt spinning with island phase resin is achieved, production continuity is enhanced, and labor intensity is reduced. In the production process of the product, according to the execution of the clean production promotion law of the people's republic of China, biodegradable PVA and an environment-friendly modifier are used as raw materials, the prepared composite superfine fiber is produced by a melting processing method, high-temperature and high-pressure processes and equipment are not needed in the production process, the three wastes of wastewater, waste gas and waste residue are not discharged, the environment is not influenced, and the requirements of clean production are met.
Detailed Description
The present invention will be described in further detail with reference to specific examples;
example 1:
the embodiment is a PA/PVA sea-island fiber with water-soluble sea phase, which is a nascent fiber formed by taking PA as an island phase component and PVA as a sea phase component, and is stretched and heat-set to obtain the sea-island fiber, wherein the island phase component of the nascent fiber accounts for 60% of the cross-sectional area of the fiber, the sea component accounts for 40% of the cross-sectional area of the fiber, the fineness of the sea-island fiber is 1.6-14 dtex, the breaking strength is 3-6 cN/dtex, the breaking elongation is 7-10%, the single fiber fineness of the island component is less than 0.8dtex, the PVA is a water-soluble PVA master batch, and the water-soluble PVA master batch is formed by fusing the following raw materials in parts by weight: 50 parts of polyvinyl alcohol; 15 parts of polyol or salt compound modifier; 3 parts of an antioxidant; 3 parts of a lubricant; 25 parts of deionized water; wherein the modifier of the polyalcohol or salt compound is alcohol amine or polyethylene glycol, the antioxidant is aniline antioxidant, and the lubricant is calcium stearate. The addition of an antioxidant aims to alleviate the problems of thermal degradation and yellowing of PVA, and the addition of a lubricant aims to improve the problems of poor flow and formability of PVA.
The fusion method comprises the steps of dissolving a polyol or salt compound modifier in deionized water, uniformly mixing the polyol or salt compound modifier with an antioxidant, a lubricant and polyvinyl alcohol, and drying to obtain modified PVA slices, wherein the melting point of the PVA slices is 180 ℃; the melting range is 175-195 ℃, and the thermal decomposition temperature is 210 ℃.
This example is a process for producing PA/PVA sea-island fiber with water-soluble sea phase, comprising the steps of:
preparation of water-soluble PVA master batch
(1) Adding polyvinyl alcohol into a vacuum feeding machine according to the corresponding weight proportion, and starting the vacuum feeding machine; injecting alcohol amine, polyethylene glycol, aniline antioxidant, calcium stearate and deionized water into a vacuum feeding machine in sequence according to the proportion;
(2) starting a heating valve of the vacuum feeding machine, heating to 75 ℃, and mixing for 80 minutes by a vertical conical ribbon mixer;
(3) after mixing, feeding the mixture into a screw extruder for extrusion granulation, wherein the temperature of a first zone of the screw extruder is 80 ℃; the temperature of the second zone is 105 ℃; the temperature of a three area is 130 ℃; the temperature of the four areas is 155 ℃; the temperature of the fifth zone is 180 ℃, and continuous strand silk is obtained;
(4) the extruded strand wires are subjected to air cooling and then are cut into particles, and particles with the particle size of 3mm are obtained;
(II) preparation of sea-island fiber
(5) Respectively carrying out melt extrusion on the PA raw material serving as the island component and the water-soluble PVA master batch serving as the sea component through a screw extruder; in the embodiment, PVA master batch with the grade of 0599/B is selected as the sea component, PA6 is selected as the island component PA, and firstly, the drying temperature of PA6 slices is 115 ℃ and the drying time is 6 hours. The drying temperature of PVA0599/B is 105 ℃, and the drying time is 6 hours. Then, PA6 entered the screw A, and the temperature of the zones was 220 ℃ in the first zone, 235 ℃ in the second zone, 245 ℃ in the third zone, 250 ℃ in the fourth zone and 260 ℃ in the fifth zone. PVA0599/B enters a screw B, and the temperature of the first zone, the second zone, the 120 ℃, the third zone, the fourth zone, the 145 ℃ and the fifth zone are respectively 105 ℃, 120 ℃, 135 ℃, 145 ℃ and 155 ℃. The extrusion proportion of the screw A is 60 percent, and the extrusion proportion of the screw B is 40 percent.
(6) Respectively feeding the two extruded and melted raw material melts into a melt pipeline for heating; the heating temperature of the two raw material melts is set to ensure that the standard of island and sea formation is ensured after the two raw material melts are respectively contacted through the distribution pipeline of the composite assembly in the spinning manifold, in the embodiment, the temperature of the melt pipeline of the PA raw material is set to 285 ℃, the temperature of the melt pipeline of the PVA raw material is set to 145 ℃, and the heat transfer temperature difference between the island component and the sea component is set to 45 ℃; because the melting point of the PA is 240 ℃, heat transfer inevitably occurs between the PA and the PVA at the moment when two raw material melts are contacted, the PA transfers the temperature of 45 ℃ to the PVA, and the PVA is instantly heated from 145 ℃ to 190 ℃, and then is instantly melted to reach the spinning condition. Compared with the traditional PVA, the modified water-soluble PVA can be melted at 190 ℃ due to the reduced melting point, so that the melting point of the PVA sea component can be ensured to be capable of melting and compounding spinning with high-melting-point PA, the melting point of the PVA is 210 ℃ higher than the conventional decomposition temperature, the PVA cannot be decomposed when reaching the melting point, and the problem that the traditional PVA cannot be melted and compounded spinning due to the decomposition of high-temperature PA is solved.
(7) Respectively feeding the two raw material melts into a spinning manifold, extruding after accurately metering by a metering pump, distributing into a composite assembly in the spinning manifold, uniformly distributing the island component into the sea component through a distribution pipeline in the composite assembly, and spraying out from the same spinneret orifice to carry out composite spinning to obtain the sea-island type nascent fiber taking PA as the island component and PVA as the sea component; in this example, the island component volume percentage range accurately measured by the metering pump in the spinning manifold was 60%, and the sea component volume percentage range was 40%. The spinning pressure is 10 MPa.
(8) And stretching and post-finishing the prepared island-in-sea type nascent fiber to obtain the clustered island-in-sea fiber. If the sea-island fiber is immersed in hot water, the sea phase component PVA in the sea-island fiber is dissolved off, and the bunched PA superfine fiber can be obtained. In this embodiment, the temperature of the hot water is set to 98 ℃, and the soaking time is 1 minute, so that the sea component PVA in the sea-island fiber can be completely dissolved.
(III) post-finishing of sea-island fibers
(9) And after the obtained sea-island fiber is subjected to the working procedures of cooling, drafting, oiling, drying, networking and the like, winding to obtain a final sea-island fiber finished product.
Example 2:
the same parts of this embodiment as those of embodiment 1 are not described again, but the differences are as follows:
the embodiment is a PA/PVA sea-island fiber with water-soluble sea phase, which is a nascent fiber formed by taking PA as an island phase component and PVA as a sea phase component, and is stretched and heat-set to obtain the sea-island fiber, wherein the island phase component of the nascent fiber accounts for 70% of the cross-sectional area of the fiber, the sea component accounts for 30% of the cross-sectional area of the fiber, the fineness of the sea-island fiber is 1.6-14 dtex, the breaking strength is 3-6 cN/dtex, the breaking elongation is 7-10%, the single fiber fineness of the island component is less than 0.8dtex, the PVA is a water-soluble PVA master batch, and the water-soluble PVA master batch is formed by fusing the following raw materials in parts by weight: 60 parts of polyvinyl alcohol; 20 parts of polyol or salt compound modifier; 5 parts of an antioxidant; 5 parts of a lubricant; 30 parts of deionized water. Wherein the modifier of the polyalcohol or salt compound is acetate or phosphate, the antioxidant is beta- (3, 5-di-tert-butyl-4-hydroxyphenyl), and the lubricant is polyfunctional fatty acid composite ester. The addition of an antioxidant aims to alleviate the problems of thermal degradation and yellowing of PVA, and the addition of a lubricant aims to improve the problems of poor flow and formability of PVA.
The fusion method is that firstly, a polyol or salt compound modifier is dissolved in deionized water, then, the mixture is uniformly mixed with an antioxidant, a lubricant and polyvinyl alcohol, and a modified PVA slice is obtained after drying, wherein the melting point of the PVA slice is 185 ℃; the melting range is 175-195 ℃, and the thermal decomposition temperature is 215 ℃.
This example is a process for producing PA/PVA sea-island fiber with water-soluble sea phase, comprising the steps of:
preparation of water-soluble PVA master batch
(1) Adding polyvinyl alcohol into a vacuum feeding machine according to the corresponding weight proportion, and starting the vacuum feeding machine; sequentially injecting acetate or phosphate, beta- (3, 5-di-tert-butyl-4-hydroxyphenyl), fatty acid compound ester with functional groups and deionized water into a vacuum feeding machine according to the mixture ratio;
(2) starting a heating valve of the vacuum feeding machine, heating to 80 ℃, and mixing for 85 minutes by a vertical conical ribbon mixer;
(3) after mixing, the mixture enters a screw extruder for extrusion granulation, and the temperature of a first area of the screw extruder is 87 ℃; the temperature of the second zone is 112 ℃; the temperature of three areas is 140 ℃; the temperature of the fourth zone is 165 ℃; the temperature of the fifth zone is 190 ℃, and continuous strand silk is obtained;
(4) the extruded strand wires are subjected to air cooling and then are cut into particles, and particles with the particle size of 3mm are obtained;
(II) preparation of sea-island fiber
(5) Respectively carrying out melt extrusion on the PA raw material serving as the island component and the water-soluble PVA master batch serving as the sea component through a screw extruder; in the embodiment, PVA master batch with the grade of 0599/B is selected as the sea component, PA6 is selected as the island component PA, and firstly, the drying temperature of PA6 slices is 120 ℃ and the drying time is 5 hours. The drying temperature of PVA0599/B is 108 ℃, and the drying time is 5 hours. The PA6 then entered the A screw at zoned temperatures of 222 ℃ in the first zone, 238 ℃ in the second zone, 247 ℃ in the third zone, 253 ℃ in the fourth zone and 262 ℃ in the fifth zone. PVA0599/B enters a screw B, and the temperature of the first zone, the second zone, the 122 ℃, the third zone, the fourth zone, the 147 ℃ and the fifth zone are divided into 110 ℃, 122 ℃, 138 ℃, 158 ℃. The extruding proportion of the screw A is 70 percent, and the extruding proportion of the screw B is 30 percent.
(6) Respectively feeding the two extruded and melted raw material melts into a melt pipeline for heating; the heating temperature of the two raw material melts is set to ensure that the standard of island and sea formation is ensured after the two raw material melts are respectively contacted through the distribution pipeline of the composite assembly in the spinning manifold, in the embodiment, the temperature of the melt pipeline of the PA raw material is set to be 272 ℃, the temperature of the melt pipeline of the PVA raw material is set to be 154 ℃, and the heat transfer temperature difference between the island component and the sea component is set to be 32 ℃; because the melting point of PA is 240 ℃, heat transfer inevitably occurs between PA and PVA at the moment when two raw material melts are contacted, PA transfers the temperature of 32 ℃ to PVA, and PVA is instantly heated from 154 ℃ to 186 ℃ and is instantly melted to achieve the spinning condition. Compared with the traditional PVA, the modified water-soluble PVA can be melted at 186 ℃ due to the reduction of the melting point, so that the melting point of the PVA sea component can be ensured to be capable of melting and compounding spinning with high-melting-point PA, the melting point of the PVA is larger than the conventional decomposition temperature of 215 ℃, the PVA cannot be decomposed when reaching the melting point, and the problem that the traditional PVA cannot be melted and compounded spinning due to the decomposition of high-temperature PA is solved.
(7) Respectively feeding the two raw material melts into a spinning manifold, extruding after accurately metering by a metering pump, distributing into a composite assembly in the spinning manifold, uniformly distributing the island component into the sea component through a distribution pipeline in the composite assembly, and spraying out from the same spinneret orifice to carry out composite spinning to obtain the sea-island type nascent fiber taking PA as the island component and PVA as the sea component; in this example, the island component volume percentage range accurately measured by the metering pump in the spinning manifold was 70%, and the sea component volume percentage range was 30%. The spinning pressure is 12 MPa.
(8) And stretching and finishing the prepared island-in-sea type nascent fiber to obtain the clustered island-in-sea fiber. If the sea-island fiber is immersed in hot water, the sea phase component PVA in the sea-island fiber is dissolved off, and the bunched PA superfine fiber can be obtained. In this embodiment, the temperature of the hot water is set to 99 ℃, and the soaking time is 45 seconds, so that the sea component PVA in the sea-island fiber can be completely dissolved.
(III) post-finishing of sea-island fibers
(9) And after the obtained sea-island fiber is subjected to the working procedures of cooling, drafting, oiling, drying, networking and the like, winding to obtain a final sea-island fiber finished product.
Example 3:
the same parts of this embodiment as those of embodiments 1 and 2 are not described again, but the differences are as follows:
the embodiment of the invention relates to a PA/PVA sea-island fiber with water-soluble sea phase, which is characterized in that PA is used as an island phase component, PVA is used as a nascent fiber formed by the sea phase component, the nascent fiber is stretched and heat-set to obtain the sea-island fiber, the island phase component of the nascent fiber accounts for 85% of the cross-sectional area of the fiber, the sea component accounts for 15% of the cross-sectional area of the fiber, the fineness of the sea-island fiber is 1.6-14 dtex, the breaking strength is 3-6 cN/dtex, the breaking elongation is 7-10%, the single fiber fineness of the island component is less than 0.8dtex, PVA is water-soluble PVA master batch, and the water-soluble PVA master batch is formed by fusing the following raw materials in parts by: 50-70 parts of polyvinyl alcohol; 25 parts of polyol or salt compound modifier; 7 parts of an antioxidant; 7 parts of a lubricant; and 35 parts of deionized water.
Wherein the modifier of the polyalcohol or salt compound is polyethylene glycol or acetate, the antioxidant is beta- (3, 5-di-tert-butyl-4-hydroxy-phenyl), and the lubricant is calcium stearate. The addition of an antioxidant aims to alleviate the problems of thermal degradation and yellowing of PVA, and the addition of a lubricant aims to improve the problems of poor flow and formability of PVA.
The fusion method comprises the steps of dissolving a polyol or salt compound modifier in deionized water, uniformly mixing the polyol or salt compound modifier with an antioxidant, a lubricant and polyvinyl alcohol, and drying to obtain modified PVA slices, wherein the melting point of the PVA slices is 190 ℃; the melting range is 175-195 ℃ and the thermal decomposition temperature is 220 ℃.
This example is a process for producing PA/PVA sea-island fiber with water-soluble sea phase, comprising the steps of:
preparation of water-soluble PVA master batch
(1) Adding polyvinyl alcohol into a vacuum feeding machine according to the corresponding weight proportion, and starting the vacuum feeding machine; sequentially injecting polyethylene glycol, acetate, beta- (3, 5-di-tert-butyl-4-hydroxy-phenyl), calcium stearate and deionized water into a vacuum feeding machine according to the mixture ratio;
(2) starting a heating valve of the vacuum feeding machine, heating to 85 ℃, and mixing for 90 minutes by a vertical conical ribbon mixer;
(3) after mixing, feeding the mixture into a screw extruder for extrusion granulation, wherein the temperature of a first zone of the screw extruder is 95 ℃; the temperature of the second zone is 120 ℃; the temperature of three areas is 150 ℃; the temperature of the four areas is 175 ℃; the temperature of the fifth zone is 200 ℃, and continuous strand silk is obtained;
(4) the extruded strand wires are subjected to air cooling and then are cut into particles, and particles with the particle size of 3mm are obtained;
(II) preparation of sea-island fiber
(5) Respectively carrying out melt extrusion on the PA raw material serving as the island component and the water-soluble PVA master batch serving as the sea component through a screw extruder; in the embodiment, PVA master batch with the grade of 0599/B is selected as the sea component, PA6 is selected as the island component PA, and firstly, the drying temperature of PA6 slices is 125 ℃, and the drying time is 4 hours. The drying temperature of PVA0599/B is 110 ℃, and the drying time is 4 hours. Then, PA6 entered the screw A, and the temperature of the zones was 225 ℃ in the first zone, 240 ℃ in the second zone, 250 ℃ in the third zone, 255 ℃ in the fourth zone, and 265 ℃ in the fifth zone. PVA0599/B enters a screw B, and the temperature of the first zone, the second zone, the 125 ℃, the third zone, the fourth zone, the 150 ℃ and the fifth zone are 115 ℃. The extrusion proportion of the screw A is 85 percent, and the extrusion proportion of the screw B is 15 percent.
(6) Respectively feeding the two extruded and melted raw material melts into a melt pipeline for heating; the heating temperature of the two raw material melts is set to ensure that the standard of island and sea formation is ensured after the two raw material melts are respectively contacted through the distribution pipeline of the composite assembly in the spinning manifold, in the embodiment, the temperature of the melt pipeline of the PA raw material is set to be 260 ℃, the temperature of the melt pipeline of the PVA raw material is set to be 160 ℃, and the heat transfer temperature difference between the island component and the sea component is set to be 20 ℃; as the melting point of the PA is 240 ℃, heat transfer inevitably occurs between the PA and the PVA at the moment when two raw material melts are contacted, the PA transfers the temperature of 20 ℃ to the PVA, and the PVA is instantly heated from 160 ℃ to 180 ℃ and is instantly melted to achieve the spinning condition. Compared with the traditional PVA, the modified water-soluble PVA can be melted at 180 ℃ due to the reduction of the melting point, so that the melting point of the PVA sea component can be ensured to be capable of melting and compounding spinning with PA with a high melting point, the melting point of the PVA is higher than the conventional decomposition temperature of 220 ℃, the PVA cannot be decomposed when reaching the melting point, and the problem that the traditional PVA can not be subjected to melting and compounding spinning due to the decomposition of PA with a high temperature is solved.
(7) Respectively feeding the two raw material melts into a spinning manifold, extruding after accurately metering by a metering pump, distributing into a composite assembly in the spinning manifold, uniformly distributing the island component into the sea component through a distribution pipeline in the composite assembly, and spraying out from the same spinneret orifice to carry out composite spinning to obtain the sea-island type nascent fiber taking PA as the island component and PVA as the sea component; in this example, the island component volume percentage range accurately measured by the metering pump in the spinning manifold was 80%, and the sea component volume percentage range was 20%. The spinning pressure is 15 MPa.
(8) And stretching and post-finishing the prepared island-in-sea type nascent fiber to obtain the clustered island-in-sea fiber. If the sea-island fiber is immersed in hot water, the sea phase component PVA in the sea-island fiber is dissolved off, and the bunched PA superfine fiber can be obtained. In this embodiment, the temperature of the hot water is set to 100 ℃, and the soaking time is 30 seconds, so that the sea component PVA in the sea-island fiber can be completely dissolved.
(III) post-finishing of sea-island fibers
(9) And after the obtained sea-island fiber is subjected to the working procedures of cooling, drafting, oiling, drying, networking and the like, winding to obtain a final sea-island fiber finished product.
Example 4:
the same parts of this embodiment as those of embodiments 1, 2 and 3 are not described again, but the differences are as follows: in the embodiment, PVA master batches with the sea component brand of 0899/B are selected, PA66 is selected as the island component PA, and firstly, the drying temperature of PA66 slices is 115-125 ℃, the drying time is 4-6 hours, the drying temperature of PVA0599/B is 105-110 ℃, and the drying time is 4-6 hours. Then, PA66 enters the screw A, and the zone temperature is 225-230 ℃ in the first zone, 240-245 ℃ in the second zone, 250-255 ℃ in the third zone, 265-270 ℃ in the fourth zone and 275-285 ℃ in the fifth zone. PVA0899/B enters a screw B, and the temperature of the first zone is 125-130 ℃, the temperature of the second zone is 140-145 ℃, the temperature of the third zone is 160-165 ℃, the temperature of the fourth zone is 175-180 ℃ and the temperature of the fifth zone is 185-190 ℃. The extruding proportion of the screw A is 70 percent, and the extruding proportion of the screw B is 0 percent.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (5)
1. A PA/PVA sea-island fiber with water-soluble sea phase, which is characterized in that: the sea-island fiber is obtained by drawing and heat setting primary fiber formed by using PA as an island phase component and PVA as a sea phase component, wherein the island phase component of the primary fiber accounts for 60-85% of the sectional area of the fiber, the sea component accounts for 40-15% of the sectional area of the fiber, the fineness of the sea-island fiber is 1.6-14 dtex, the breaking strength is 3-6 cN/dtex, the elongation at break is 7-10%, the single fiber fineness of the island component is less than 0.8dtex, and the PVA is water-soluble PVA master batch which is prepared by fusing the following raw materials in parts by weight:
60 parts of polyvinyl alcohol;
20 parts of polyol or salt compound modifier;
5 parts of an antioxidant;
5 parts of a lubricant;
30 parts of deionized water;
dissolving a polyol or salt compound modifier in deionized water, uniformly mixing the polyol or salt compound modifier with an antioxidant, a lubricant and polyvinyl alcohol, and drying to obtain modified PVA master batch, wherein the melting point of the PVA master batch is 180-190 ℃; the melting range is 175-.
2. The PA/PVA sea-island fiber with water-soluble sea phase of claim 1, wherein: the antioxidant is aniline antioxidant or hindered phenol antioxidant.
3. The PA/PVA sea-island fiber with water-soluble sea phase of claim 1, wherein: the lubricant is calcium stearate or polyfunctional fatty acid compound ester.
4. A production process of PA/PVA sea-island fiber with water-soluble sea phase is characterized by comprising the following steps:
preparation of water-soluble PVA master batch
(1) Adding 60 parts by weight of polyvinyl alcohol into a vacuum feeding machine, and starting the vacuum feeding machine; sequentially injecting 20 parts by weight of polyol or salt compound modifier, 5 parts by weight of antioxidant, 5 parts by weight of lubricant and 30 parts by weight of deionized water into a vacuum feeder, wherein the polyol or salt compound modifier is one or more of alcohol amine, polyethylene glycol, acetate or phosphate;
(2) starting a heating valve of the vacuum feeding machine, heating to 75-85 ℃, and mixing for 80-90 minutes by a vertical conical ribbon mixer;
(3) after mixing, feeding the mixture into a screw extruder for extrusion granulation, wherein the temperature of a first area of the screw extruder is 80-95 ℃; the temperature of the second zone is 105-120 ℃; the temperature of a three area is 130-150 ℃; the temperature of the fourth area is 155-175 ℃; the temperature of the fifth zone is 180-200 ℃, and continuous strand silk is obtained;
(4) cutting extruded strands into particles after air cooling to obtain 3mm particles, wherein the melting point of the PVA master batch is 180-190 ℃; the melting range is 175-195 ℃ and the thermal decomposition temperature is 210-220 ℃;
(II) preparation of sea-island fiber
(5) The PA drying temperature is 115-125 ℃, the drying time is 4-6 hours, the PVA drying temperature is 105-110 ℃, the drying time is 4-6 hours, and the PA raw material as the island component and the water-soluble PVA master batch as the sea component are respectively subjected to melt extrusion through a screw extruder; the PA enters an A screw extruder, the extrusion proportion of the A screw extruder is 60-80%, the PVA enters a B screw extruder, and the extrusion proportion of the B screw extruder is 40-20%;
(6) respectively feeding the two extruded and melted raw material melts into a melt pipeline for heating; the heating temperature of the two raw material melts is set to ensure that the standard of island and sea is formed after the two raw material melts are respectively contacted through the distribution pipeline of the composite assembly in the spinning manifold, the heat transfer temperature difference between the island component and the sea component is set to be 20-45 ℃, the melt pipeline temperature of the PA raw material is set to be 260-285 ℃, and the melt pipeline temperature of the PVA raw material is set to be 145-160 ℃;
(7) respectively feeding the two raw material melts into a spinning manifold, extruding after accurately metering by a metering pump, distributing into a composite assembly in the spinning manifold, uniformly distributing the island component into the sea component through a distribution pipeline in the composite assembly, and spraying out from the same spinneret orifice to carry out composite spinning to obtain the sea-island type nascent fiber taking PA as the island component and PVA as the sea component;
(8) stretching and post-finishing the prepared island-in-sea type nascent fiber to obtain cluster-shaped island-in-sea fiber;
(III) post-finishing of sea-island fibers
(9) And cooling, drafting, oiling, drying and networking the obtained sea-island fiber, and then winding to obtain a final sea-island fiber finished product.
5. The process of claim 4 for producing PA/PVA islands-in-the-sea fiber with water-soluble sea phase, characterized by: immersing the sea-island fiber in hot water, and dissolving out the sea phase component PVA in the sea-island fiber to obtain the bunched PA superfine fiber, wherein the temperature of the hot water is set to be 98-100 ℃, and the immersion time is 30 seconds-1 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372919.1A CN108532027B (en) | 2018-04-24 | 2018-04-24 | PA/PVA sea-island fiber with water-soluble sea phase and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372919.1A CN108532027B (en) | 2018-04-24 | 2018-04-24 | PA/PVA sea-island fiber with water-soluble sea phase and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108532027A CN108532027A (en) | 2018-09-14 |
| CN108532027B true CN108532027B (en) | 2020-10-02 |
Family
ID=63478435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810372919.1A Active CN108532027B (en) | 2018-04-24 | 2018-04-24 | PA/PVA sea-island fiber with water-soluble sea phase and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108532027B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115747988A (en) * | 2022-11-17 | 2023-03-07 | 明新梅诺卡(江苏)新材料有限公司 | Preparation method of superfine fiber taking modified PVA as sea |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259594A (en) * | 1998-12-16 | 2000-07-12 | 可乐丽股份有限公司 | Thermoplastic polyvinyl alcohol fiber and mfg. method therefor |
| JP2003293224A (en) * | 2002-03-29 | 2003-10-15 | Kuraray Co Ltd | Highly hygroscopic/water-absorbing polyvinyl alcohol copolymer conjugate fiber |
| CN101735608A (en) * | 2009-12-14 | 2010-06-16 | 杭州师范大学 | Hydroscopic fine denier/superfine denier chinlon master batch, chinlon POY filaments and preparation method thereof |
| CN102071495A (en) * | 2010-07-28 | 2011-05-25 | 烟台万华超纤股份有限公司 | Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same |
| JP2012219385A (en) * | 2011-04-05 | 2012-11-12 | Kuraray Co Ltd | Composite fiber and method for producing hollow fiber using the composite fiber |
| CN103981593A (en) * | 2014-05-28 | 2014-08-13 | 永安市宝华林实业发展有限公司 | Preparation method of polyvinyl alcohol melt-spun ultrafine fiber |
-
2018
- 2018-04-24 CN CN201810372919.1A patent/CN108532027B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259594A (en) * | 1998-12-16 | 2000-07-12 | 可乐丽股份有限公司 | Thermoplastic polyvinyl alcohol fiber and mfg. method therefor |
| JP2003293224A (en) * | 2002-03-29 | 2003-10-15 | Kuraray Co Ltd | Highly hygroscopic/water-absorbing polyvinyl alcohol copolymer conjugate fiber |
| CN101735608A (en) * | 2009-12-14 | 2010-06-16 | 杭州师范大学 | Hydroscopic fine denier/superfine denier chinlon master batch, chinlon POY filaments and preparation method thereof |
| CN102071495A (en) * | 2010-07-28 | 2011-05-25 | 烟台万华超纤股份有限公司 | Figured sea-island super-fine fiber, and preparation method thereof and synthetic leather preparing process method using same |
| JP2012219385A (en) * | 2011-04-05 | 2012-11-12 | Kuraray Co Ltd | Composite fiber and method for producing hollow fiber using the composite fiber |
| CN103981593A (en) * | 2014-05-28 | 2014-08-13 | 永安市宝华林实业发展有限公司 | Preparation method of polyvinyl alcohol melt-spun ultrafine fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108532027A (en) | 2018-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108660524B (en) | Sea-island fiber composite melt spinning method using water-soluble modified PVA as sea | |
| CN108486683B (en) | PET/PVA sea-island fiber with water-soluble sea phase and production process thereof | |
| CN108505190B (en) | Method for preparing peach skin fabric base cloth by using water-soluble polyvinyl alcohol sea-island fibers | |
| CN108589028B (en) | Sea-island fiber synthetic leather base cloth and production process thereof | |
| JP5716318B2 (en) | Recycled polyester resin recycling method and molded product using recycled polyester resin | |
| WO2018045476A1 (en) | Isotropized "ready-to-use" plastic pellets with highly entangled nanofibrils and method of production | |
| CN102241862A (en) | Preparation of water resistant polyvinyl alcohol biodegradable film through melt extrusion method | |
| CN102051766B (en) | Preparation method of completely degradable biological polymer melt-blown cotton | |
| CN108192304B (en) | Polylactic acid film and preparation method thereof | |
| CN108396435B (en) | Novel superfine fiber fabric based on modified PVA (polyvinyl alcohol) sea-island fibers | |
| CN101851797B (en) | Method for preparing fishing flexible blended and modified polyethylene monofilaments | |
| CN108532027B (en) | PA/PVA sea-island fiber with water-soluble sea phase and production process thereof | |
| CN106519595B (en) | A kind of production technology of plastic bowl | |
| CN102642312A (en) | Processing method for recovering and processing PET (polyethylene glycol terephthalate) waste film in compounding way by using twin-screw extrusion melting | |
| JP2001514296A (en) | Polyamide / polyurethane microblends and methods | |
| CN108424601B (en) | Melt-processable water-soluble PVA (polyvinyl alcohol) slice for composite fiber and preparation process thereof | |
| CN104073906A (en) | Production process for producing top-grade core material for textile by using waste bottle flake material | |
| CN107540935B (en) | Polypropylene reclaimed material composition and preparation method thereof | |
| CN115094538A (en) | Preparation method of superfine sea-island fiber taking efficient water-soluble modified PVA as sea | |
| CN115387023A (en) | Preparation method of TPU/PLA melt-blown composite non-woven fabric | |
| CN113754953B (en) | Preparation method and application of clean and odorless polypropylene | |
| CN110819004A (en) | Preparation method of thin-wall injection-molded reinforced polypropylene composite material | |
| CN107501716B (en) | Polypropylene filling master batch prepared from polypropylene reclaimed material and preparation method thereof | |
| CN111849114B (en) | Modified regenerated composite plastic and preparation method thereof | |
| CN115286904B (en) | Biodegradable breathable material, biodegradable breathable master batch, biodegradable breathable film and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220701 Address after: 323000 No.11, Tongji street, nanmingshan street, Liandu District, Lishui City, Zhejiang Province Patentee after: Zhejiang Hongtai Dejian New Fiber Co.,Ltd. Address before: 251500 north side of Kaiyuan Street (Linpan section) west side of Linpan middle school, Linyi County, Dezhou City, Shandong Province Patentee before: SHANDONG KEBEIER NONWOVEN MATERIALS TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231221 Address after: 315475 Jianmin Village, Xiaocao'e Town, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Ningbo Hengqide Chemical Fiber Technology Co.,Ltd. Address before: 323000 No.11, Tongji street, nanmingshan street, Liandu District, Lishui City, Zhejiang Province Patentee before: Zhejiang Hongtai Dejian New Fiber Co.,Ltd. |
|
| TR01 | Transfer of patent right |