CN108193307A - A kind of hollow acid fiber by polylactic of original liquid coloring and preparation method thereof - Google Patents
A kind of hollow acid fiber by polylactic of original liquid coloring and preparation method thereof Download PDFInfo
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- CN108193307A CN108193307A CN201711461626.2A CN201711461626A CN108193307A CN 108193307 A CN108193307 A CN 108193307A CN 201711461626 A CN201711461626 A CN 201711461626A CN 108193307 A CN108193307 A CN 108193307A
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- polylactic
- original liquid
- liquid coloring
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- polylactic acid
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- 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
- 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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; 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
- D01F1/04—Pigments
-
- 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
Abstract
The present invention relates to technical field of fibre production, specifically a kind of hollow acid fiber by polylactic of original liquid coloring and preparation method thereof, the hollow acid fiber by polylactic of original liquid coloring is process by original liquid coloring polylactic acid master batch and polylactic acid slice by spinning.The invention has the advantages that：It is Raw material processing into the hollow acid fiber by polylactic of original liquid coloring to use the original liquid coloring polylactic acid master batch that environmental-friendly pigment is prepared, the defects of polylactic acid hydrolysis-resisting energy force difference can fundamentally be overcome, avoids the adverse effect that spinning after stain and postfinishing process generate it.With the pure spinning of the hollow acid fiber by polylactic of original liquid coloring of the present invention or it is blended made of clothes there is high color fastness, warming, fluffy, good permeability, rich in gloss, good hand touch, moisture conducting and sweat absorbing, resistance to ultraviolet and biodegradable.
Description
Technical field
The present invention relates to technical field of fibre production, specifically, be a kind of hollow acid fiber by polylactic of original liquid coloring and its
Preparation method.
Background technology
Synthetic fibers polyester, nylon, polypropylene, acrylic be using petrochemicals as Material synthesis, physics and
Chemical property is stablized, but the problem of there is using rear waste that can not decompose, it was reported that cotton in Xinjiang growing area is China
The region of fouling membrane most serious, the Plastic-film pollution problem increasingly aggravated affects the yield and quality of crops, also, oil is
Non-renewable resources, along with the loss of petrochemical material, in order to realize sustainable development, it is former that field of textiles needs new replacement
Material, particularly environment amenable polymer can be applied to the more agricultural mulching of people's requirement and non-returnable container material
Material, hygienic material.Polylactic acid (PLA) is exactly an outstanding representative, and material acid may be from the renewable sources of energy such as corn, sweet tea
Dish etc., PLA belong to linear aliphatic race thermoplastic polyester, and this molecular structure means it with good biocompatibility and can
Degradation property under conditions of certain temperature, pH value and moisture, can be decomposed into water and carbon dioxide.The U.S.
NatureWorks companies are the leaders of global PLA fiber developments and production, and PLA fibers are mainly used for disposable products, account for
The 60%~70% of NatureWorks companies total sales volume.Other weaving Frontier, Inc such as U.S. DuPont, Unifi, Fiber
The companies such as Innovation, Parkdale, Interface, Japanese Supreme Being people, clock spinning, Kuraray have also grasped the key of PLA exploitations
Technology, and relevant PLA textiles are developed, in the forward position of PLA exploitations, China is at present also in passive imitation situation.
PLA fibers compare from petroleum-based PET fiber, have penetrability is good, elastic recovery is high, the combustion heat is small,
Burning fuming is few, ultra-violet resistance is good, refractive index is low, rich in gloss, good and biodegradable etc. the outstanding advantages of fabric feeling.But
Also there are some defects, such as linear aliphatic race thermoplastic poly ester structure so that its hydrolysis resistance is poor for PLA fibers, thus dyes
More adverse effect can be generated to fiber, reduce wearability with postfinishing process.
UK Polymer Showcase 2007London College of Fashion disclose subsequent in order to cancel
Staining procedure avoids potentially hydrolyzing, degrade, U.S. DyeCatTMCompany develops suitable chromophore and is loaded into catalyst knot
On structure, apply the polymerization stage in PLA, a direct step has made coloured PLA polymer, and develop black PLA polyester and
It is generally necessary to high dyestuff loads some colors being difficult to realize.In current, the state for not grasping PLA core key production technologies also
Inside still it is difficult to realize the so big leap of amplitude.
Chinese patent literature CN106894103A (application number 201710137990.7) discloses a kind of acid fiber by polylactic and spins
Preceding original liquid coloring solvent carrier type color masterbatch, raw material composition：Solvent carrier 40-89.5%, dyestuff or pigment 10-60% and dispersion
Agent 0.5-5%.A few class solvent carriers in selected polylactic acid dedicated solvent carrier model color masterbatch have good compatible with polylactic acid
Property, by adding online, utilization rate improves, and actually faces many difficulties, requires the technology for the personnel that match colors height, corresponding raw
Production equipment is also required to be transformed, and the operation of pigment residual is complex during variety renovation, is not the mode of production of mainstream in the market.
Chinese patent literature CN106633693A (application number 201611143792.3) discloses a kind of acid fiber by polylactic and spins
Preceding original liquid coloring Masterbatch, it is composed of the following components by weight：The modified PET polyester that 40~95 parts of fusing points are 180 DEG C,
0~50 part of pigment A or dyestuff a, 0~25 part of pigment B or dyestuff b, 0~15 part of pigment C or dyestuff c, 0~10 part of pigment D or dye
Material d, 0.3~1.0 part of thermostabilization auxiliary agent, 0~2.5 part of dispersing aid, 0~2.5 part of rheology modifier add in color masterbatch in spinning
Grain can obtain the acid fiber by polylactic of 3 grades of water resistance color fastness or more, 4 grades of light shine color fastness or more.
More than 2 literature research carrier for solvent carrier, 180 DEG C of modified PET polyester, be required for consider and polylactic acid
The consistency problem of slice, experimental study process is all complex cumbersome, according to the applicant's acid fiber by polylactic exploitation warp over the years
It tests, carrier selection polylactic acid slice, without considering consistency problem.
Original liquid coloring acid fiber by polylactic also needs to have in terms of applied to textile garment and home textile use in some use occasions
There are warmth retention property and gas permeability dual function, be processed into profiled polylactic acid fiber using profile spinneret in production, it will be into
One step widens the application of acid fiber by polylactic, assigns the good warmth retention property of fiber and bulkiness.
Invention content
Early period of the invention has done a large amount of research work to coloured acid fiber by polylactic, selects polylactic acid slice as carrier,
Hollow acid fiber by polylactic of a kind of original liquid coloring and preparation method thereof is proposed, thus the present invention generates.
The first aspect of the present invention, provides a kind of preparation method of the hollow acid fiber by polylactic of original liquid coloring, and the stoste
The hollow acid fiber by polylactic of color is process by original liquid coloring polylactic acid master batch and polylactic acid slice by spinning, including following step
Suddenly：
A, the preparation of original liquid coloring polylactic acid master batch：
Carrier polylactic acid slice is ground into powder, is uniformly mixed with environmentally friendly colorant and auxiliary material, blended drying, and through spiral shell
Original liquid coloring polylactic acid master batch is made in bar extrusion molten, extrusion, cooling, tie rod, pelletizing and drying；
B, the preparation of the hollow acid fiber by polylactic of original liquid coloring：
The spinning on LHV431 type spinning-drawing machines after original liquid coloring polylactic acid master batch, polylactic acid slice are dried, in LHV903
On joint drafting machine carry out drawing-off spinning, through drying, hollow profile spinning, winding, molding, boundling, drawing-off, thermal finalization, curling,
The hollow acid fiber by polylactic of original liquid coloring is obtained after cut-out.
Preferably, in the step A, the polylactic acid slice powder size is 100nm~300nm.Through experiment, ruler
The compatibility of the very little powder in the range of 100nm~300nm and environmentally friendly colorant and auxiliary material is good, is not susceptible to reunite, it is preferred that powder
Body size is 140nm~220nm.
Preferably, in the step A, environmentally friendly colorant is selected from C.I. Pigment whites 6, C.I. face white 18：1st, 12, C.I pigment
Red 101, C.I pigment red 4s 9：1st, C.I paratoneres 68, C.I pigment yellows 32, C.I. pigment yellows 16, C.I. pigment blacks 11, C.I. face
Expect black 15, C.I. solvent yellow 19s, C.I. pigment oranges 24, C.I pigment violet 3s, C.I. pigment blue 1s 0, phthalocyanine blue b, C.I. pigment blues
29th, C.I pigment blue 1s 7：1st, one in C.I naphthol greens 8, sun-proof emerald green color lake, environmentally-friecarbon carbon black FR8150, environmentally-friecarbon carbon black FR5200
Kind or two or more mixtures.
Carrier polylactic acid slice powder melt viscosity is high, the poor compatibility with surface of pigments, needs to add in auxiliary material to reduce
Carrier viscosity, realization is compatible with pigment, meanwhile, it is easier to penetrate into pigment agglomerate internal void, weakens cohesive force, make face
Dough aggressiveness is being easier to open outside plus under the action of scissors power, and newborn particle also rapidly can be soaked and be protected, so as to
Promote the dispersion of pigment in original liquid coloring master batch.
Preferably, in the step A, the weight percent of carrier polylactic acid slice powder, environmentally friendly colorant and auxiliary material is：
Carrier polylactic acid slice powder 65~85%, environmentally friendly colorant：5~20%, auxiliary material：10~30%.The environmentally friendly colorant proportioning
Preferably 5~15wt%, more preferable 8~12wt%.
Preferably, in the step A, the auxiliary material is 40~60wt% polyethylene waxes and 40~60wt% nano-sized carbons
The mixture of sour calcium.
Preferably, in the step B, spinning technology parameter is：Original liquid coloring polylactic acid master batch, polylactic acid slice drying
Temperature：116~120 DEG C, dry 16h, spinning pump is for measuring as 780~1000g/min (preferably 820g/min), spinning temperature
For 225~260 DEG C (preferably 240~260 DEG C), spinning speed is 980~1100m/min (preferably 1020m/min), drafting multiple
For 3.1~3.6 times (preferably 3.35 times).
Preferably, in the step B, in the hollow shape of profile spinneret selection circle, cross-shaped hollow shape, the hollow shapes of four T
One kind, 1700 hole of spinneret hole count.
Preferably, in the step B, original liquid coloring polylactic acid master batch, polylactic acid slice weight percent be：Stoste
Colour polylactic acid master batch 5~12%, polylactic acid slice 88~95%.
The professional standard that polylactic acid short-fiber test is formulated according to Shanghai Defulun Chemical Fiber Co., Ltd.：《The short fibre of polylactic acid
Dimension》FZ/T 52041-2015.After tested, fibre technology index, fracture strength：>=3.40cN/dtex, elongation at break：45±
6.0%, line density deviation ratio：± 8.0%, length variation rate：± 8.0%, crispation number：10 ± 2.5/25mm, crimp percent：10
± 2.5%, 130 DEG C of dry-hot shrinkages：≤ 5.0%, regain：>=0.5%, line density：1.5~2.1dtex, biological decomposition
Rate：>=60%, fusing point：173~176 DEG C, limit oxygen index：LOI：24~26%, fastness to soaping：>=4 grades, degree of hollowness：
15~17%.
The second aspect of the present invention provides a kind of original liquid coloring hollow acid fiber by polylactic, and the original liquid coloring is hollow poly-
Acid fiber is prepared by as above any preparation method.
The invention has the advantages that：
1. use the original liquid coloring polylactic acid master batch that environmental-friendly pigment is prepared hollow poly- into original liquid coloring for Raw material processing
Acid fiber, avoids spinning after stain and postfinishing process at the defects of can fundamentally overcoming polylactic acid hydrolysis-resisting energy force difference
The adverse effect generated to it is processed into profiled polylactic acid fiber using profile spinneret in production, will further open up
The application of wide acid fiber by polylactic assigns the good warmth retention property of fiber, bulkiness and gas permeability, improves taking for acid fiber by polylactic
Performance and expand application range.
2. the carrier that polylactic acid slice is selected to be synthesized as master batch efficiently solves the prior art using PET polyester with gathering
The problem of lactic acid slice cannot be compatible, scheme is simple and practicable.
3. the hollow acid fiber by polylactic of original liquid coloring derives from the renewable resources such as the cornstarch being easy to get, substitute non-renewable
Fossil resource, carbon dioxide and water can be degraded into, final back to nature has the characteristics that low-carbon, environmental protection, can be from basic
It is upper to solve the environmental problems such as " white pollution ", " greenhouse effects ".
4. with the hollow acid fiber by polylactic of original liquid coloring it is pure spinning or it is blended made of clothes have color fastness it is high, it is warming, fluffy,
Good permeability, rich in gloss, good hand touch, moisture conducting and sweat absorbing, it is resistance to ultraviolet and biodegradable the advantages that.
Specific embodiment
It elaborates with reference to embodiment to specific embodiment provided by the invention.
The preparation of 1 original liquid coloring White hollow acid fiber by polylactic of embodiment
A, the preparation of original liquid coloring white polylactic acid master batch：
Carrier polylactic acid slice is ground into size as 100nm~300nm powders, with environmentally friendly colorant C.I. Pigment whites 6 and
Mixture (the 60wt% of auxiliary material polyethylene wax and nano-calcium carbonate：It 40wt%) is uniformly mixed, weight percent is：Carrier gathers breast
Acid slice powder 68%, environmentally friendly colorant 4%, auxiliary material 28%.Blended drying, and melt through screw extruding, squeeze out, cool down, drawing
Original liquid coloring white polylactic acid master batch is made in item, pelletizing and drying.
B, the preparation of original liquid coloring White hollow acid fiber by polylactic：
The spinning on LHV431 type spinning-drawing machines after original liquid coloring white polylactic acid master batch, polylactic acid slice are dried,
Drawing-off spinning is carried out on LHV903 joint drafting machines, weight percent is：Original liquid coloring white polylactic acid master batch 10%, polylactic acid
Slice 90% obtains stoste after drying, the spinning of circle hollow profile, winding, molding, boundling, drawing-off, thermal finalization, curling, cut-out
The white acid fiber by polylactic of coloring.
Original liquid coloring white polylactic acid master batch, 117 DEG C of polylactic acid slice drying temperature, dry 16h, spinning pump is for amount
780g/min, 240~260 DEG C, spinning speed 980m/min of spinning temperature, 3.1 times of drafting multiple.
After tested, fibre technology index, fracture strength：3.5cN/dtex, elongation at break：39.5%, line density deviation
Rate：2.6%, length variation rate：1.8%, crispation number：8.5/25mm, crimp percent：8.4%, 130 DEG C of dry-hot shrinkages：
4.3%, regain：0.7%, line density：1.5dtex, biological decomposition rate：92%, fusing point：176 DEG C, limit oxygen index LOI：
24%, fastness to soaping：4-5 grades, degree of hollowness：15%.
The preparation of the hollow acid fiber by polylactic of 2 original liquid coloring of embodiment blue
A, the preparation of original liquid coloring blue polylactic acid master batch：
Carrier polylactic acid slice is ground into size as 100nm~300nm powders, with environmentally friendly colorant C.I pigment blue 1s 7：1
With auxiliary material polyethylene wax and the mixture (50wt% of nano-calcium carbonate：It 50wt%) is uniformly mixed, weight percent is：Carrier gathers
Lactic acid is sliced powder 73%, environmentally friendly colorant 10%, auxiliary material 17%.Blended drying, and melt through screw extruding, squeeze out, cool down,
Original liquid coloring blue polylactic acid master batch is made in tie rod, pelletizing and drying.
B, the preparation of the hollow acid fiber by polylactic of original liquid coloring blue：
The spinning on LHV431 type spinning-drawing machines after original liquid coloring blue polylactic acid master batch, polylactic acid slice are dried,
Drawing-off spinning is carried out on LHV903 joint drafting machines, weight percent is：Original liquid coloring blue polylactic acid master batch 8%, polylactic acid
Slice 92%, original is obtained after drying, the spinning of cross-shaped hollow abnormity, winding, molding, boundling, drawing-off, thermal finalization, curling, cut-out
Liquid colored blue acid fiber by polylactic.
Original liquid coloring blue polylactic acid master batch, 116 DEG C of polylactic acid slice drying temperature, dry 16h, spinning pump is for amount
1000g/min, 225~240 DEG C, spinning speed 1100m/min of spinning temperature, 3.6 times of drafting multiple.
After tested, fibre technology index, fracture strength：3.7cN/dtex, elongation at break：32.7%, line density deviation
Rate：1.1%, length variation rate：0.8%, crispation number：12.2/25mm, crimp percent：9.7%, 130 DEG C of dry-hot shrinkages：
4.0%, regain：0.5%, line density：2.1dtex, biological decomposition rate：96%, fusing point：173 DEG C, limit oxygen index LOI：
26%, fastness to soaping：4-5 grades, degree of hollowness：17%.
The preparation of the hollow acid fiber by polylactic of 3 original liquid coloring of embodiment green
A, the preparation of original liquid coloring green polylactic acid master batch：
Carrier polylactic acid slice is ground into size as 100nm~300nm powders, emerald green color lake sun-proof with environmentally friendly colorant and
Mixture (the 40wt% of auxiliary material polyethylene wax and nano-calcium carbonate：It 60wt%) is uniformly mixed, weight percent is：Carrier gathers breast
Acid slice powder 83%, environmentally friendly colorant 7%, auxiliary material 10%.Blended drying, and melt through screw extruding, squeeze out, cool down, drawing
Original liquid coloring green polylactic acid master batch is made in item, pelletizing and drying.
B, the preparation of the hollow acid fiber by polylactic of original liquid coloring green：
The spinning on LHV431 type spinning-drawing machines after original liquid coloring green polylactic acid master batch, polylactic acid slice are dried,
Drawing-off spinning is carried out on LHV903 joint drafting machines, weight percent is：Original liquid coloring green polylactic acid master batch 5%, polylactic acid
Slice 95%, original is obtained after drying, four T hollow profiles spinning, winding, molding, boundling, drawing-off, thermal finalization, curling, cut-out
The green acid fiber by polylactic of liquid coloring.
Original liquid coloring green polylactic acid master batch, 120 DEG C of polylactic acid slice drying temperature, dry 16h, spinning pump is for amount
For 816g/min, 240~260 DEG C, spinning speed 1020m/min of spinning temperature, 3.35 times of drafting multiple.
After tested, fibre technology index, fracture strength：3.8cN/dtex, elongation at break：43.5%, line density deviation
Rate：1.5%, length variation rate：1.7%, crispation number：11.2/25mm, crimp percent：11.7%, 130 DEG C of dry-hot shrinkages：
3.6%, regain：0.7%, line density：1.7dtex, biological decomposition rate：94%, fusing point：175 DEG C, limit oxygen index LOI：
25%, fastness to soaping：4-5 grades, degree of hollowness：16%.
The preparation of the red hollow acid fiber by polylactic of comparative example 1
Change the carrier polylactic acid slice in the step A of embodiment 1 into 180 DEG C of modified PETs, other raw materials, weight ratio are same
Embodiment 1, production technology is the same as embodiment 1.
A, the preparation of red master batch：
0 DEG C of modified PET slice of carrier 18 is ground into size as 100nm~300nm powders, with environmentally friendly colorant C.I pigment
Red 101 and the mixing of the mixture of auxiliary material polyethylene wax and nano-calcium carbonate, weight percent is：0 DEG C of modified PET slice of carrier 18
Powder 68%, environmentally friendly colorant 4%, auxiliary material 28%.Blended drying, and melt through screw extruding, squeeze out, cool down, tie rod, pelletizing
Red polylactic acid master batch is made with drying.During mixing, part reunion has occurred, dispersion effect is poor.
B, the preparation of red acid fiber by polylactic：
By the spinning on LHV431 type spinning-drawing machines after red master batch, polylactic acid slice drying, combine drafting machine in LHV903
Upper progress drawing-off spinning, weight percent are：Red master batch 12, polylactic acid slice 88%, through drying, circle hollow profile spinning,
Red acid fiber by polylactic is obtained after winding, molding, boundling, drawing-off, thermal finalization, curling, cut-out.Spinning moulding is more difficult.
117 DEG C of red master batch, polylactic acid slice drying temperature, dry 16h, spinning pump is for amount 780g/min, spinning
240~260 DEG C, spinning speed 980m/min of temperature, 3.1 times of drafting multiple.
After tested, fibre technology index, fracture strength：2.6cN/dtex, elongation at break：34.5%, line density deviation
Rate：4.8%, length variation rate：3.9%, crispation number：5.4/25mm, crimp percent：5.3%, 130 DEG C of dry-hot shrinkages：
6.9%, regain：0.4%, line density：1.5dtex, biological decomposition rate：52%, fusing point：170 DEG C, limit oxygen index LOI：
24%, fastness to soaping：3 grades, indices are not as good as 1 product of embodiment.
The preparation of 2 original liquid coloring blue acid fiber by polylactic of comparative example
Spinning spinneret in embodiment 2 is changed to circular solids, other raw materials, weight ratio are the same as embodiment 2, production technology
With embodiment 2.
After tested, fibre technology index, fracture strength：3.9cN/dtex, elongation at break：44.6%, line density deviation
Rate：0.8%, length variation rate：0.9%, crispation number：10.2/25mm, crimp percent：10.54%, 130 DEG C of dry-hot shrinkages：
4.0%, regain：0.5%, line density：2.1dtex, biological decomposition rate：96%, fusing point：175 DEG C, limit oxygen index LOI：
26%, fastness to soaping：4-5 grades, the bulkiness of fiber is than the difference of embodiment 2.
The preparation of 3 original liquid coloring White hollow acid fiber by polylactic A of comparative example
Raw material proportioning in the step A of embodiment 1 is changed to：Carrier polylactic acid slice powder 45%, environmentally friendly colorant：
25%, auxiliary material：30%, remaining production technology is the same as embodiment 1.
Dispersibility is poor when step A blendings make master batch, and part occurs and reunites, master batch prepares difficult.
Occurs spinning moulding difficulty in step B, blocking the situations such as spinneret causes technical target of the product to differ greatly.
After tested, the fibre technology index that prepared by comparative example 3 is fracture strength：2.6cN/dtex, elongation at break：
18.4%, line density deviation ratio：21.8%, length variation rate：6.9%, crispation number：5.2/25mm, crimp percent：6.1%,
130 DEG C of dry-hot shrinkages：9.7%, regain：0.3%, line density：1.5dtex, biological decomposition rate：81%, fusing point：175 DEG C,
Limit oxygen index LOI：22%, fastness to soaping：3-4 grades, degree of hollowness：12%.Indices are not as good as 1 product of embodiment.
The preparation of 4 original liquid coloring White hollow acid fiber by polylactic B of comparative example
By the auxiliary material polyethylene wax in the step A of embodiment 1 and the mixture of nano-calcium carbonate change into polyethylene wax (not plus
Nano-calcium carbonate), other raw materials, weight ratio and production technology are the same as embodiment 1.
During step A prepares white master batch, when polylactic acid powder is mixed with environmentally friendly colorant and auxiliary material, dispersion effect compared with
Difference occurs part and reunites, and master batch prepares difficult.
Occurs spinning moulding difficulty in step B, the quality and technical index of product is unstable.
After tested, the fibre technology index that prepared by comparative example 4 is fracture strength：2.9cN/dtex, elongation at break：
26.3%, line density deviation ratio：13.1%, length variation rate：12.9%, crispation number：7.7/25mm, crimp percent：6.5%,
130 DEG C of dry-hot shrinkages：6.3%, regain：0.3%, line density：1.5dtex, biological decomposition rate：88%, fusing point：175 DEG C,
Limit oxygen index LOI：24%, fastness to soaping：3 grades, degree of hollowness：13%.Indices are not as good as 1 product of embodiment.
The preparation of 5 original liquid coloring red acid fiber by polylactic of comparative example
Raw material in the step A of embodiment 3 is changed into：Carrier polylactic acid slice powder 90%, environmentally friendly colorant：10%；Not
Auxiliary material is added, technique is the same as embodiment 3.
In step A prepares red master batch, when polylactic acid powder is with environmentally friendly coloring material for mixing, dispersion effect is poor, occurs
Serious agglomeration, master batch prepare failure, fail to carry out follow-up test.
The preferred embodiment of the invention is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make various equivalent under the premise of without prejudice to the invention spirit
Modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (8)
1. a kind of preparation method of the hollow acid fiber by polylactic of original liquid coloring, which is characterized in that include the following steps：
A, the preparation of original liquid coloring polylactic acid master batch：
Carrier polylactic acid slice is ground into powder, is uniformly mixed with environmentally friendly colorant and auxiliary material, blended drying, and squeezed through screw rod
Original liquid coloring polylactic acid master batch is made in pressure melting, extrusion, cooling, tie rod, pelletizing and drying；Wherein, carrier polylactic acid slice powder
The weight percent of body, environmentally friendly colorant and auxiliary material is：Carrier polylactic acid slice powder 65~85%, environmentally friendly colorant：5~20%,
Auxiliary material：10~30%；The auxiliary material is 40~60wt% polyethylene waxes and the mixture of 40~60wt% nano-calcium carbonates；
B, the preparation of the hollow acid fiber by polylactic of original liquid coloring：
By the spinning on LHV431 type spinning-drawing machines after original liquid coloring polylactic acid master batch, polylactic acid slice drying, combine in LHV903
Drawing-off spinning is carried out on drafting machine, through drying, hollow profile spinning, winding, molding, boundling, drawing-off, thermal finalization, curling, cut-out
After obtain the hollow acid fiber by polylactic of original liquid coloring；Wherein, original liquid coloring polylactic acid master batch, polylactic acid slice weight percent
For：Original liquid coloring polylactic acid master batch 5~12%, polylactic acid slice 88~95%.
2. the preparation method of the hollow acid fiber by polylactic of original liquid coloring according to claim 1, which is characterized in that the step
In rapid A, the polylactic acid slice powder size is 100nm~300nm.
3. the preparation method of the hollow acid fiber by polylactic of original liquid coloring according to claim 1, which is characterized in that the step
In rapid A, the polylactic acid slice powder size is 140nm~220nm.
4. the preparation method of the hollow acid fiber by polylactic of original liquid coloring according to claim 1, which is characterized in that the step
In rapid A, environmentally friendly colorant is selected from C.I. Pigment whites 6, C.I. face white 18：1st, 12, C.I paratoneres 101, C.I pigment red 4s 9：1、C.I
Paratonere 68, C.I pigment yellows 32, C.I. pigment yellows 16, C.I. pigment blacks 11, C.I. pigment blacks 15, C.I. solvent yellow 19s, C.I.
Pigment orange 24, C.I pigment violet 3s, C.I. pigment blue 1s 0, phthalocyanine blue b, C.I. pigment blues 29, C.I pigment blue 1s 7：1st, C.I naphthol greens
8th, the mixture in one or more of sun-proof emerald green color lake, environmentally-friecarbon carbon black FR8150, environmentally-friecarbon carbon black FR5200.
5. the preparation method of the hollow acid fiber by polylactic of original liquid coloring according to claim 1, which is characterized in that the step
In rapid A, environmentally friendly colorant proportioning is 5~15wt%.
6. the preparation method of the hollow acid fiber by polylactic of original liquid coloring according to claim 1, which is characterized in that the step
In rapid B, spinning technology parameter is：Original liquid coloring polylactic acid master batch, polylactic acid slice drying temperature：It is 116~120 DEG C, dry
16h, spinning pump are 780~1000g/min for amount, and spinning temperature is 225~260 DEG C, and spinning speed is 980~1100m/
Min, drafting multiple are 3.1~3.6 times.
7. the preparation method of the hollow acid fiber by polylactic of original liquid coloring according to claim 1, which is characterized in that the step
In rapid B, one kind in the hollow shape of profile spinneret selection circle, cross-shaped hollow shape, the hollow shapes of four T, 1700 hole of spinneret hole count.
8. a kind of hollow acid fiber by polylactic of original liquid coloring, which is characterized in that the hollow acid fiber by polylactic of the original liquid coloring is by weighing
Profit requires any preparation methods of 1-7 to be prepared.
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