CN105040156A - Blended fiber and preparation method thereof and fabric comprising the blended fiber - Google Patents
Blended fiber and preparation method thereof and fabric comprising the blended fiber Download PDFInfo
- Publication number
- CN105040156A CN105040156A CN201410790752.2A CN201410790752A CN105040156A CN 105040156 A CN105040156 A CN 105040156A CN 201410790752 A CN201410790752 A CN 201410790752A CN 105040156 A CN105040156 A CN 105040156A
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- CN
- China
- Prior art keywords
- polyamide
- polyester
- blended
- fiber
- blended fiber
- 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.)
- Granted
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- 239000000835 fiber Substances 0.000 title claims abstract description 191
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004744 fabric Substances 0.000 title claims abstract description 16
- 239000004952 Polyamide Substances 0.000 claims abstract description 142
- 229920002647 polyamide Polymers 0.000 claims abstract description 142
- 229920000728 polyester Polymers 0.000 claims abstract description 120
- 239000002253 acid Substances 0.000 claims abstract description 38
- VHRGRCVQAFMJIZ-UHFFFAOYSA-N cadaverine Chemical compound NCCCCCN VHRGRCVQAFMJIZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 25
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 70
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical group O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 14
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- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical group NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 8
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- 125000003277 amino group Chemical group 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
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- 238000000034 method Methods 0.000 abstract description 31
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- 229920000647 polyepoxide Polymers 0.000 description 4
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- 108010048581 Lysine decarboxylase Proteins 0.000 description 3
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- 239000003513 alkali Substances 0.000 description 2
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- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 description 2
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- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
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- 239000006224 matting agent Substances 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
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- 238000004781 supercooling Methods 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
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- 229920005604 random copolymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 150000003902 salicylic acid esters Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 239000000326 ultraviolet stabilizing agent Substances 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000010148 water-pollination Effects 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
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Woven Fabrics (AREA)
Abstract
The invention provides a blended fiber and a preparation method thereof and a fabric comprising the blended fiber. The raw materials of the blended fiber include 1-40 parts by weight of polyamide A and 60-99 parts by weight of polyester, wherein the raw materials of the polyamide A comprise 1,5-pentanediamine and a binary acid. The blended fiber is simple in preparation process and is high in production efficiency, and can be directly produced on a polyester direct spinning device in the prior art just by simple modification. The blended fiber is excellent in performances and all indexes of the blended fiber satisfy requirement in a subsequent weaving requirement. The blended fiber is simple in production operation, is low in cost and is suitable for industrial production. Cotton-type fibers or wool-type fibers prepared from the blended fiber can be blended with cotton or wool in any proportion. The fabric woven from the blended fiber can be subjected to one-bath dyeing, is free of color difference, is high in dyeing rate and can be deeply dyed, so that a dyeing process of the fabric can be greatly simplified, thereby effectively reducing cost.
Description
Technical field
The present invention relates to a kind of fiber, particularly a kind of polyamide-polyester blend fiber and preparation method thereof and the fabric containing this blended fiber.
Background technology
Polyester fiber is widely used due to its good performance, but because it lacks hydrophilic radical, it is poor to show as in industrial yarn with rubber affinity, repeatedly dipping process need be carried out, in civilian silk, DISPERSE DYES must be utilized to dye under high temperature, high pressure, because DISPERSE DYES solubility is low, need to add azo co-catalyst simultaneously, cause serious environmental pollution.In recent years, China's chemical fibre output develop rapidly, wherein terylene output ranks first in the world, and production capacity is still at high speed development.Current polyster fibre more and more for the natural protein fibre blending such as wool, for the preparation of worsted fabric.But, the natural protein fibre such as wool, real silk, employing are all acid dyeings cheap, that chromatogram is complete, bright in colour.If with conventional polyester fiber and the blending such as wool, real silk, cannot carry out with bathing piece dyeing.In order to address this problem, lot of domestic and international scholar expert conduct in-depth research.
Usually, can by adding polyamide and polyester carries out the blended water imbibition and the dye-uptake that improve polyester, but, because polyamide and polyester exist the incompatibility on dynamics and thermodynamics natively, therefore need in Blending Processes to add compatilizer to improve the Miscibility of polyamide and polyester, to obtain the compatible system that there is not separating interface, and it is well-known, the mechanical property of compatilizer itself can produce restriction to the mechanical property of co-mixing system, thus has influence on the mechanical property of blended fiber.
Patent CN101942708B discloses a kind of polyester-polyamide copolymer, its dye-uptake under ACID DYES is greater than 80%, but institute to add polyamide be caprolactam performed polymer, as everyone knows, about 10% monomer can be there is in caprolactam polymerization process, need before carrying out spinning first to wash removal, otherwise cannot spinning be carried out, simultaneously due to caprolactam structures shape in caprolactam pre-polymer Amino End Group account for the ratio of total end group can not more than 50%, this is also unfavorable for that copolymerization occurs.
Patent CN103668553A discloses a kind of polyamide-solubility polyester-polyvinylpyrrolidone blended fiber, then obtains water suction, moisture absorption, rapid-curing cutback material by the molten process of alkali.Its raw materials used price is high, and the molten process of alkali exists to be polluted and waste problem.
Patent CN1632195A discloses a kind of polyester fiber of acid dyeable, by adding the compound additive of polyethylene-poly-methyl acrylate and polyamide composition in polyester, obtain through co-blended spinning, the method need carry out spinning again after granulation obtains pellet after polyester, polyamide and polyethylene-poly-methyl acrylate mixing, complex steps, simultaneously because polyethylene-poly-methyl acrylate fusing point is much lower compared with polyester, polyamide fusing point, the hot property of polyester fiber certainly will be affected.
Summary of the invention
The object of the invention is to overcome prior art deficiency, although provide a kind of do not repel interpolation compatilizer, but under the condition of not adding compatilizer, also can carry out the polyamide-polyester blend fiber of resin alloy spinning, do not add compatilizer and not only can reduce the impact of additive on fibrous mechanical property, also effectively improve the shortcoming of polyester hydrophily difference with low cost, while achieving the acid-dyeable of polyester, high dye-uptake can be reached.
On the one hand, the invention provides a kind of blended fiber, the raw material of described blended fiber comprises polyamide and polyester, and described polyamide comprises polyamide A, and the content of described polyamide A is 1 ~ 40 weight portion; The content of described polyester is 60 ~ 99 weight portions, and wherein, the raw material of described polyamide A is 1,5-pentanediamine and binary acid.
In an embodiment of blended fiber of the present invention, the content of described polyamide A is 10 ~ 30 weight portions, and the content of described polyester is 60 ~ 90 weight portions.
In another embodiment of blended fiber of the present invention, described polyamide A is 1, the mixture of the copolymer that the mixture of a kind of homopolymers that 5-pentanediamine and binary acid are polymerized or multiple homopolymers, 1,5-pentanediamine and at least two kinds of binary acid are polymerized or multiple copolymer or any aforesaid combination.
In another embodiment of blended fiber of the present invention, described polyamide A is selected from the group be made up of nylon 56, nylon 510 and nylon 512, is preferably nylon 56.
In another embodiment of blended fiber of the present invention, the viscosity number of described polyamide is 70 ~ 180mL/g, and terminal amino group content is 20 ~ 150mol/ton (i.e. mol/ ton).
In another embodiment of blended fiber of the present invention, described polyester be selected from the group be made up of polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate (PBT) one or more.
In another embodiment of blended fiber of the present invention, the inherent viscosity of described polyester is 0.7 ~ 0.9dL/g.
In another embodiment of blended fiber of the present invention, the fiber number of described blended fiber is 0.5 ~ 7dtex, and fracture strength is 1.0 ~ 5.5cN/dtex, and elongation at break is 15 ~ 370%.
In another embodiment of blended fiber of the present invention, the fiber number of described blended fiber is 1.0 ~ 5.0dtex, and fracture strength is 1.5 ~ 5.0cN/dtex.
In another embodiment of blended fiber of the present invention, the dye-uptake of described blended fiber acid dyeing is at ambient pressure more than 62%, is preferably more than 82%, is more preferably more than 86%.
In another embodiment of blended fiber of the present invention, the saturated water absorption of described blended fiber is greater than 0.56%, is preferably greater than 2.70%, more preferably greater than 3.84%.
In another embodiment of blended fiber of the present invention, described polyamide also comprises polyamide B, and the raw material of described polyamide B is caprolactam, or hexamethylene diamine and binary acid, and the weight of described polyamide B is not higher than the weight of described polyamide A.
In another embodiment of blended fiber of the present invention, described polyamide B is one or more in polyamide 6, polyamide 66, polyamide 610, polyamide 612, is preferably polyamide 6.
In another embodiment of blended fiber of the present invention, described polyamide is polyamide A.
In another embodiment of blended fiber of the present invention, the raw material of described blended fiber also comprises additive, described additive is selected from one in delustering agent, age resister, antioxidant, heat stabilizer, fire retardant, pigment and dyestuff, conductive filler or antistatic filler or its combination, and the content of described additive is 0 ~ 20 weight portion.
In another embodiment of blended fiber of the present invention, described blended fiber is the blended as-spun fibre of polyamide polyester, polyamide polyester blended fiber long filament, polyamide polyester blended POY fiber, polyamide polyester blended add elater, the blended FDY fiber of polyamide polyester or polyamide polyester blend staple dimension in one or its combination.
On the other hand, the present invention also provides the preparation method of above-mentioned blended fiber, comprising:
Described polyester and described polyamide are imported in blender, after mixing, obtains blend melt; And
Above-mentioned blend melt is imported spinning machine and carries out spinning,
The temperature of wherein said mixing is 220 ~ 320 DEG C, and pressure is 20 ~ 101325Pa; Preferably, the temperature of described mixing is 260 ~ 290 DEG C, and pressure is 20 ~ 40000Pa.
In an embodiment of preparation method of the present invention, described mixing comprises and mixing after polyamide and polyester melt in container, or heating and melting is uniformly mixed after polyamide and polyester are directly added container, or mix directly injecting polyester after molten polyamide in polyester production process.
In an embodiment of preparation method of the present invention, also comprise and add additive in a mixer, described additive is selected from one in delustering agent, age resister, antioxidant, heat stabilizer, fire retardant, pigment and dyestuff, conductive filler or antistatic filler or its combination, and the content of described additive is 0 ~ 20 weight portion.
Again on the one hand, the present invention also provides a kind of fabric, and this fabric contains above-mentioned blended fiber.
Polyamide of the present invention-polyester blend fiber technique used is simple, production efficiency is high, and on current polyester direct spinning equipment, simple transformation can directly realize producing.Gained fibre property is good, fibrous fracture intensity > 1.0cN/dtex, elongation at break > 5%, indices all can meet follow-up woven requirement, and this procedure of fibre production is simple to operate, cost is lower, is suitable for carrying out suitability for industrialized production.Utilize the cotton prepared by blended fiber of the present invention or wool type fiber, with cotton or hair with arbitrary proportion blending, the woven fabric of this blended yarn can be adopted, a bath can be carried out with dye, and dyeing no color differnece, dye-uptake is high, can engrain, enormously simplify the dyeing process of fabric, effectively reduce costs.
Detailed description of the invention
According to specific embodiment, technical scheme of the present invention is described further below.Protection scope of the present invention is not limited to following examples, enumerates these examples and does not only limit the present invention in any way for exemplary purpose.
Blended fiber of the present invention comprises following raw material: polyamide and polyester, and wherein, described polyamide comprises polyamide A, and the raw material of described polyamide A is 1,5-pentanediamine and binary acid.
When polyamide A of the present invention and polyester blend, the parts by weight of polyamide A are 1 ~ 40 part, and be preferably 10 ~ 30 parts, the parts by weight of polyester are 60 ~ 99 parts, are preferably 70 ~ 90 parts.
The viscosity number of polyamide of the present invention is 70 ~ 180mL/g, and terminal amino group content is 20 ~ 150mol/ton.The inherent viscosity of polyester is 0.7 ~ 0.9dL/g.Terminal amino group content is amino molal quantity contained in each ton of nylon.
The raw material of polyamide A of the present invention is 1,5-pentanediamine and binary acid, and namely polyamide A obtained by 1,5-pentanediamine and binary acid polymerisation.
In the present invention, to the source of 1,5-pentanediamine, there is no particular limitation.1,5-pentanediamine can be take lysine as raw material, carries out that decarboxylic reaction prepares.Decarboxylic reaction can be bioanalysis, under lysine decarboxylase effect, is prepared by lysine decarboxylic reaction; Decarboxylic reaction also can be chemical method, the amino acid whose decarboxylic reaction (the 4th edition) of people is just being waited on palpus mountain, pharmaceutical journal (Vol.85 (6), P531-533,1965) disclose with lysine in containing the cyclohexanol of tetrahydronaphthalene peroxide through boiling obtained pentanediamine.Also can pass through gene technology, in the bacterial strain that can generate lysine, raise the expression of lysine decarboxylase, or recombinant expressed lysine decarboxylase, the lysine of generation can be made during the fermentation to be synchronously converted into pentanediamine, and direct fermentation obtains pentanediamine.
In the present invention, polyamide A can be that pentanediamine is polymerized the homopolymers obtained with binary acid, can be a kind of homopolymers, also can be the mixture of multiple homopolymers.
In the present invention, the polymerization methods of polyamide A does not limit, and can be to be obtained by pentanediamine and binary acid direct polycondensation, and also can be pentanediamine obtains with being polymerized after binary acid salify, or after pentanediamine and the first pre-polymerization of binary acid again solid phase obtain.
Binary acid above-mentioned in the present invention can be aliphatic dibasic acid and derivative thereof, aliphatic dibasic acid can be short chain diacid, namely in carbochain, carbon number is less than or equal to the binary acid of 10, such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, decanedioic acid, be preferably adipic acid, decanedioic acid; Also can be long carbochain biatomic acid, such as DC11, SL-AH, tridecanyldicarboxylic acid, DC14,15 carbon dicarboxylic acids, 16-dicarboxylic acid, DC17, DC18, maleic acid, △ 9-1,18-octadecylene binary acid, is preferably SL-AH; Be more preferably adipic acid.
Above-mentioned binary acid also can be aromatic acid and derivative thereof, such as terephthalic acid (TPA).
Above-mentioned binary acid also can be also heterocycle binary acid and derivative thereof, such as furans dicarboxylic acids.
Above-mentioned binary acid can be chemical method preparation, also can be the raw material preparation of bioanalysis or biogenetic derivation.
In the present invention, according to the selection of diamine in above-mentioned raw materials and binary acid, polyamide A can include but not limited in polyamide 54, polyamide 56, polyamide 510, polyamide 512 one or more, be preferably polyamide 56.
In the present invention, the raw material of described blended fiber also can comprise caprolactam or hexamethylene diamine and binary acid, and it represents with polyamide B, and the weight of polyamide B is not higher than the weight of polyamide A.Polyamide B includes but not limited to one or more in polyamide 6, polyamide 66, polyamide 610, polyamide 612, is preferably polyamide 66.
In the present invention, polyamide A can be the copolymer that pentanediamine and two kinds or more binary acid polymerisation obtains, it can be a kind of copolymer, also can be the mixture of multiple copolymer, above-mentioned polyamide copolymer can be random copolymer, can be alternate copolymer, also can be block copolymer.
In the present invention, polyamide A can be the mixture of above-mentioned homopolymers and/or copolymer.
In the present invention, the raw material of polyamide A and polyamide B can also comprise other monomer, includes but not limited to amino acid, caprolactam.
In the present invention, the organic carbon of the renewable source meeting ASTMD6866 standard in polyamide A and polyamide B, can be comprised.
In the present invention, to the preparation of polyamide A and polyamide B without any restriction, any known method can be adopted to prepare, such as the salify in water by pentanediamine and aliphatic diacid, then high-temperature polycondensation obtains nylon resin.
Can add in catalyst, end-capping reagent, antioxidant, heat stabilizer, light stabilizer, fire retardant, pigment and dyestuff, conductive filler or antistatic filler, delustering agent etc. in the process preparing polyamide A and polyamide B as required any one or a few.As end-capping reagent, include but not limited to following material, the acid anhydrides such as such as monocarboxylic acid, dicarboxylic acids, monoamine, diamine, phthalic anhydride, monoisocyanates, single carboxylic acid halides, monoesters class and unary alcohol etc.From the viewpoint of raising blend melt homogeneity, preferred diamine.As catalyst, include but not limited to following material, such as inferior sodium phosphate, phosphate, preferred inferior sodium phosphate.
The source of the present invention to polyester is not particularly limited, and can be one or more mixing of the self-control of any known method or commercially available polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate (PBT).
Polyamide of the present invention-polyester blend fibre number is 0.5 ~ 7dtex.According to the difference of Application Areas, device of the present invention and technique can regulate filament number.Due to anomalies such as the too low easy appearance broken ends of filament number, the too high fabric bending strength that can cause again of filament number is too high simultaneously, Boardy Feeling.Therefore, the fiber number of polyamide polyester blended fiber of the present invention more preferably scope be 1.0 ~ 5.0dtex.Meanwhile, if above-mentioned filament number remains in invention claimed range, then can select suitable filament number according to purposes, with satisfied application requirement.
The intensity of polyamide polyester blended fiber of the present invention is 1.0 ~ 5.5cN/dtex (li ox/dtex).Intensity is too low, in weaving process, easily occur fine hair, finished product cracky, intensity is too high, and during spinning, spinnability is poor, easily occurs fracture of wire phenomenon, according to the difference in the field of use, regulated by polymerization and spinning technique, polyamide polyester blended fiber more preferably strength range is 1.5 ~ 5.0cN/dtex.
The elongation at break of polyamide polyester blended fiber of the present invention is 15.0 ~ 370%.
The dye-uptake of polyamide polyester blended fiber provided by the present invention acid dyeing at ambient pressure can reach more than 62%, is preferably more than 82%, is more preferably more than 86%.
Polyamide polyester blended fiber of the present invention, can comprise the blended as-spun fibre of polyamide polyester, polyamide polyester blended fiber long filament, polyamide polyester blended POY fiber, polyamide polyester are blended adds elater, the blended FDY fiber of polyamide polyester and polyamide polyester blend staple dimension.
The present invention also provides the preparation method of above-mentioned blended fiber, comprises the following steps:
Polyester and polyamide are imported in blender according to predetermined ratio (such as above-mentioned weight ratio), after mixing at a certain temperature, obtains blend melt; And
Above-mentioned blend melt is imported spinning machine and carries out spinning.
In the present invention, the hybrid mode of polyamide and polyester is not particularly limited, when polyamide and polyester are the form of section, singe screw/double screw extruder can be utilized to mix after polyamide section and polyester slice melting in container, also after polyamide section and polyester slice directly can being added container, heating and melting is uniformly mixed, in addition, in polyester production process, polyester is the form of melt, can will inject polyester fondant with the form of melt after molten polyamide and mix.
In preparation method of the present invention, can vacuumize in the melt mixed stage, vacuum is 20 ~ 101325Pa (absolute pressure), is preferably 20 ~ 40000Pa, vacuumizes and can effectively improve melt viscosity number, and can prevent the generation of lousiness, improves fibre strength.
Melt mix temperature is preferably 220 ~ 320 DEG C, is more preferably 250 ~ 290 DEG C.Mixing temperature is too low, and such as, lower than 220 DEG C, melt easily occurs solidifying phenomenon; Mixing temperature is too high, such as, higher than 320 DEG C, easily side reaction occurs.
To spinning technique, there is no particular limitation in the present invention, and can adopt existing arbitrary applicable polyester or nylon melt spinning technology, those skilled in the art can determine suitable technological parameter as required.
Above-mentioned polyamide-polyester blend melt is imported spinning machine, spinning is carried out at 220 ~ 320 DEG C, more preferably 250 ~ 300 DEG C are carried out spinning, spinning speed is 200 ~ 1500m/min, preferred spinning speed is 400 ~ 1200m/min, more preferably 500 ~ 1100m/min carries out spinning, can obtain polyamide-polyester blend as-spun fibre.
Polyamide-polyester blend melt is imported spinning machine, and carry out spinning at 220 ~ 320 DEG C, spinning speed 1500 ~ 6000m/min, more preferably spinning speed is 1800 ~ 5200m/min, can obtain polyamide-polyester blend POY fiber.
Polyamide-polyester blend melt is imported spinning machine, spinning is carried out at 220 ~ 320 DEG C, the fiber got off from spinnerets directly enters the first heat dish, temperature of heat plate 75 ~ 140 DEG C, speed 800 ~ 2000m/min, then enters the second heat dish, temperature of heat plate 140 ~ 250 DEG C, speed 3200 ~ 6000m/min, carries out the drawing-off of fiber, drafting multiple 2 ~ 5 times between the one the second heat dishes; The fibre bundle coiling out from the second heat enters up-coiler and carries out package, winding speed 3100 ~ 5800m/min, can obtain polyamide-polyester blend FDY fiber after winding.
By polyamide-polyester blend as-spun fibre carry out one-level drawing-off at 40 ~ 120 DEG C, drafting multiple 1.5 ~ 6 times, 80 ~ 160 DEG C are carried out secondary drawing-off, drafting multiple 1.1 ~ 1.6 times, 120 ~ 250 DEG C carry out HEAT SETTING after can obtain polyamide-polyester blend fiber filament.
Polyamide-polyester blend as-spun fibre is carried out one-level drawing-off at 40 ~ 120 DEG C, drafting multiple 1.5 ~ 4 times, 80 ~ 160 DEG C are carried out secondary drawing-off, drafting multiple 1.1 ~ 2 times, afterwards fiber is carried out curling, crispation number 10 ~ 20/25cm, then carries out HEAT SETTING 15 minutes at 120 ~ 200 DEG C, by sizing after fiber prescind on cutting machine, pack after can obtain polyamide-polyester blend staple fibre.
By polyamide-polyester blend POY fiber on elasticizer with the speed draw 1.3 ~ 3 times of 300 ~ 1200m/min, preheating cabinet temperature is 120 ~ 250 DEG C, and D/Y is 1.4 ~ 2.6, shaping box temperature 140 ~ 240 DEG C, winding speed 800 ~ 2200m/min, can obtain polyamide-polyester blend and add elater.
In the present invention, can add one or more additives when polyamide and polyester blend, the parts by weight of additive are 0 ~ 20 part.
Additive can include but not limited to delustering agent, age resister, antioxidant, heat stabilizer, fire retardant, pigment and dyestuff, conductive filler or antistatic filler.These additives can add as required in the scope not damaging effect of the present invention.Its feed postition can use existing known method.
Delustering agent can be added when polyamide and polyester blend in the present invention, as delustering agent, include but not limited to following material, such as silica dioxide delustring agent, titanium dioxide delustering agent, pure polyester matting resin, pure PET delustrant, organic matting agent, fumed silica matting agent etc., preferred titanium dioxide delustering agent.
Can also add age resister when polyamide and polyester blend in the present invention, can be one or more ultraviolet absorber, one or more antioxidant as age resister, also can be compound multiple in ultraviolet absorber and antioxidant.As ultraviolet absorber, include but not limited to following material, such as salicylate class, benzophenone class, benzotriazole, group-substituted acrylonitrile and triazines.As salicylate type ultraviolet absorbent, include but not limited to following material, such as double acid double phenol A ester, the p-tert-butyl group phenyl ester of salicylic acid, phenyl salicytate, isopropyl salicylate, isoamyl salicylate, butyl salicylate etc., as benzophenone class ultraviolet absorber, include but not limited to following material, such as 2, 4-dihydroxy benaophenonel, ESCALOL 567, Octabenzone etc., as Benzotriazole Ultraviolet Stabilizer, include but not limited to following material, such as 2-(2'-hydroxyl-5'-aminomethyl phenyl) benzotriazole (UV-P), 2-(the 2'-hydroxyl-3'-tert-butyl group-5'-aminomethyl phenyl)-5-chlorobenzotriazole (UV-326), 2-(2'-hydroxyl-3', 5'-di-tert-butyl-phenyl)-5-chlorobenzotriazole (UV-327) etc.Antioxidant comprises copper system antioxidant, hindered phenol system antioxidant, hindered amine system antioxidant, phosphorous antioxidant, sulphur system antioxidant etc., wherein, and preferred hindered phenol system antioxidant, phosphorous antioxidant.
Also fire retardant can be added when polyamide and polyester blend in the present invention, fire retardant can include but not limited to melamine cyanurate, hydroxide, as magnesium hydroxide or aluminium hydroxide, ammonium polyphosphate, brominated Polystyrene, brominated polyphenylether, brominated polycarbonate, brominated epoxy resin, and the combination etc. be made up of these fire retardants based on bromine any and antimonous oxide.
Also heat stabilizer can be added when polyamide and polyester blend in the present invention, heat stabilizer can include but not limited to the compound based on hindered phenol, the compound based on quinhydrones, compound based on thiazole, and based on the compound of phosphorus, as phenyl-phosphonic acid, based on the compound of imidazoles, as 2-mercaptobenzimidazole, its substitution product, copper halide, iodine compound etc.
Also can add pigment and dyestuff when polyamide and polyester blend in the present invention, pigment and dyestuff comprise cadmium sulfide, phthalocyanine, carbon black etc.
Also antistatic filler can be added when polyamide and polyester blend in the present invention, antistatic filler can include but not limited to alkyl sulphate type anionic antioxidant, quaternary ammonium salt cationic type antistatic additive, non-ionic antistatic agent, as Tween-60, both sexes antistatic additive etc. based on betaine.
The present invention also provides a kind of fabric, and this fabric comprises above-mentioned blended fiber.
According to traditional knowledge in industry, it is generally acknowledged that polyester and polyamide are Immiscible Polymer Blends, simply the two mixing is easily occurred noted phase separation phenomena, thus cause the mechanical property of its blend sharply to decline.And by method provided by the present invention by polyester and the polyamide melt prepared by pentanediamine by a certain percentage fully after mixing, not there is phenomenon of phase separation in unexpected discovery blend melt, the blended fiber of gained has good mechanical property, and simultaneously blended fiber has the higher hygroscopicity (reaching as high as more than 3.8%) of polyamide 6 more in the past, polyamide 66 modified poly ester gained fiber and higher dye-uptake (reaching as high as more than 85%) and dyeability.
Through lot of experiment validation, we find that the blend method described in patent is more conducive to polyamide Amino End Group and polyester reacts, product serves the effect of compatilizer, and not needing to add extra compatilizer, conventional compatilizer includes but not limited to that cyclic acid anhydride type compatilizer, carboxylic acid type compatilizer are if acrylic type compatilizer, epoxies compatilizer are as epoxy resin etc.As traditional method being obtained compatible co-mixing system by extra compatilizer, although compatilizer adds the compatibility of Immiscible Polymer Blends, but too increase the complexity of system comparatively speaking, and the physical property of compatilizer itself can produce restriction to co-mixing system, such as fusing point, mechanical property etc.Method provided by the present invention can also improve system homogeneity simultaneously, reduces Small molecular and generates, be beneficial to and improve blended fiber mechanical property.In addition, because polyamide used in the present invention is obtained using odd numbers of carbon atoms diamine as raw material, amido link on its strand only has half to form intermolecular hydrogen bonding, namely more amido link is had to participate in water suction and dye, the simultaneously two-way extension α structure of uniqueness that also represents of its crystal structure, the molecular structure of these uniquenesses and strand interact and impart the modified effect that blended fiber surmounts conventional polyamide 6 and polyamide 66.In addition, present invention also avoids the amino acid such as polyamide 6 or the abundant residues monomer existing for lactam type nylon affects the problems such as spinning.
In sum, polyamide of the present invention-polyester blend fiber technique used is simple, production efficiency is high, and on current polyester direct spinning equipment, simple transformation can directly realize producing.Gained fibre property is good, fibrous fracture intensity > 1.0cN/dtex, elongation at break > 5%, indices all can meet follow-up woven requirement, and this procedure of fibre production is simple to operate, cost is lower, is suitable for carrying out suitability for industrialized production.Utilize the cotton prepared by blended fiber of the present invention or wool type fiber, with cotton or hair with arbitrary proportion blending, the woven fabric of this blended yarn can be adopted, a bath can be carried out with dye, and dyeing no color differnece, dye-uptake is high, can engrain, enormously simplify the dyeing process of fabric, effectively reduce costs.
It should be noted that; the raw material of polyamide of the present invention-polyester blend fiber can not comprise compatilizer; but do not repel the application of compatilizer, the basis of polyamide of the present invention-polyester blend fiber uses the identical component of a small amount of compatilizer in protection scope of the present invention yet.
By the following examples the present invention is described in further detail.
Unless otherwise mentioned, raw material used in the embodiment of the present invention is commercially available.
Unless otherwise mentioned, the pentanediamine in the present invention all refers to 1,5-pentanediamine.
Embodiment
Each characteristic in embodiment and comparative example, known method measures in accordance with the following methods and in industry:
Inherent viscosity η (dL/g), method of testing: with reference to ASTMD4603-2003;
Polyamide viscosity number (mL/g), method of testing: with reference to GB12006.1-89;
Polyamide Amino End Group (mol/ton (mole/ton)), method of testing: be solvent with trifluoroethanol, utilizes automatical potentiometric titrimeter to measure.
Saturated water absorption (%), method of testing: with reference to GB/T1034-2008;
Fracture strength (CN/dtex), method of testing: with reference to GB/T3916-1997;
Elongation at break (%), method of testing: with reference to GB/T3916-1997;
Dye-uptake (%), method of testing: with reference to FZ/T54037-2011.
Comparative example 1
By dried 0.6kg nylon 66 slice (viscosity number 140mL/g, Amino End Group 52mol/ton) cut into slices add in 50L autoclave with 9.9kg polyethylene terephthalate (inherent viscosity 0.83dL/g), add 50g Tween-60 simultaneously, system is after nitrogen replacement three times, system is evacuated to 60pa, be heated to 285 DEG C, through fully stirring, Melt Pump is utilized to import manifold, spinning is carried out at 285 DEG C, first temperature of heat plate 80 DEG C, speed 1500m/min, then the second heat dish is entered, temperature of heat plate 160 DEG C, speed 3750m/min, the drawing-off of fiber is carried out between the one the second heat dishes, drafting multiple 2.5 times, enter up-coiler from the second godet fibre bundle out and carry out package, winding speed 3700m/min, after winding, obtain polyamide-polyester blend FDY fiber.
This fibrous fracture intensity 3.46cN/dtex, elongation at break 20%, saturated water absorption is 0.68%, be in the carmoisine of 1: 20 in bath raio by gained fiber, dye 30 minutes under 93 DEG C of normal pressures, washing post-drying, detecting the dye-uptake obtaining this blended FDY fiber is 23%.Uneven dyeing, has aberration, and lousiness is many.
Comparative example 2
By dried 0.6kg nylon 66 slice (viscosity number 140mL/g, Amino End Group 52mol/ton) cut into slices add in 50L autoclave with 9.9kg polyethylene terephthalate (inherent viscosity 0.83dL/g), add 0.8kg polyethylene methacrylic acid salt simultaneously, system is after nitrogen replacement three times, system is evacuated to 60pa, be heated to 285 DEG C, through fully stirring, Melt Pump is utilized to import manifold, spinning is carried out at 285 DEG C, first temperature of heat plate 80 DEG C, speed 1500m/min, then the second heat dish is entered, temperature of heat plate 160 DEG C, speed 3750m/min, the drawing-off of fiber is carried out between the one the second heat dishes, drafting multiple 2.5 times, enter up-coiler from the second godet fibre bundle out and carry out package, winding speed 3700m/min, after winding, obtain polyamide-polyester blend FDY fiber.
This fibrous fracture intensity 2.72cN/dtex, elongation at break 32%, saturated water absorption is 0.79%, be in the carmoisine of 1: 20 in bath raio by gained fiber, dye 30 minutes under 93 DEG C of normal pressures, washing post-drying, detecting the dye-uptake obtaining this blended FDY fiber is 68%.Even dyeing, no color differnece, lousiness is few.
From comparative example 1 and comparative example 2, when not adding compatilizer, polyamide and polyester are difficult to be formed the co-mixing system with better compatibility, the acid-dyeable of polyester fiber does not obtain good modification thus, the dye-uptake of the fiber obtained thus is very low, and polyamide and polyester can mix well after adding compatilizer, form comparatively homogeneous co-mixing system, the dye-uptake of the blended fiber obtained thus improves greatly.Therefore can finding out, when comparative example nylon66 fiber used and polyester blend, must compatilizer be added to obtain the good fiber of dye-uptake.
Embodiment 1
Cut into slices dried 0.1kg nylon 56 (viscosity number 70mL/g, Amino End Group 150mol/ton) cut into slices add in 50L autoclave with 9.9kg polyethylene terephthalate (inherent viscosity 0.7dL/g), add the S-EED additive of 20g gram of Lay benefactor department simultaneously, system is after nitrogen replacement three times, system is evacuated to 20pa, be heated to 285 DEG C, through fully stirring, Melt Pump is utilized to import manifold, spinning is carried out at 290 DEG C, spinning speed 3800m/min, obtains polyamide-polyester blend POY fiber.
This fibrous fracture intensity 3.2cN/dtex, elongation at break 39%, fiber modulus 36cN/dtex, saturated water absorption is 0.56%, be in the carmoisine of 1: 20 in bath raio by gained fiber, dye 90 minutes under 93 DEG C of normal pressures, washing post-drying, detecting the dye-uptake obtaining this polyamide-polyester blend long filament can reach 62%.Dyeing is comparatively even, and no color differnece, without lousiness.
Have employed the polyamide that raw material is 1,5-pentanediamine and binary acid in embodiment 1, in the process preparing blended fiber, do not add compatilizer, the close result having added the comparative example 2 of compatilizer of dye-uptake of gained fiber.
Embodiment 2
Cut into slices dried 0.3kg nylon 56 (viscosity number 120mL/g, Amino End Group 70mol/ton) cut into slices add in 50L autoclave with 9.7kg polyethylene terephthalate (inherent viscosity 0.82dL/g), add containing 40g titanium dioxide turbid liquid simultaneously, system is after nitrogen replacement three times, system is evacuated to 10000pa, be heated to 290 DEG C, through fully stirring, Melt Pump is utilized to import manifold, spinning is carried out at 285 DEG C, spinning speed 800m/min, obtain polyamide-polyester blend as-spun fibre, this as-spun fibre 85 DEG C is carried out one-level drawing-off, drafting multiple 3 times, 135 DEG C are carried out secondary drawing-off, drafting multiple 1.6 times, 180 DEG C carry out HEAT SETTING after obtain fiber filament.
This fibre number 0.5dtex, fracture strength 5.5cN/dtex, elongation at break 15%, fiber modulus 42cN/dtex, gained fiber is in the carmoisine of 1: 20 in bath raio by saturated water absorption 0.74%, dyes 90 minutes under 93 DEG C of normal pressures, washing post-drying, detecting the dye-uptake obtaining this polyamide-polyester blend long filament can reach 73%.Even dyeing, no color differnece, without lousiness.
Embodiment 3
Cut into slices dried 0.6kg nylon 56 (viscosity number 140mL/g, Amino End Group 56mol/ton) cut into slices add in 50L autoclave with 9.4kg polyethylene terephthalate (inherent viscosity 0.83dL/g), add 500g Tween-60 simultaneously, system is after nitrogen replacement three times, system is evacuated to 60pa, be heated to 280 DEG C, through fully stirring, Melt Pump is utilized to import manifold, spinning is carried out at 280 DEG C, first temperature of heat plate 80 DEG C, speed 1500m/min, then the second heat dish is entered, temperature of heat plate 160 DEG C, speed 3750m/min, the drawing-off of fiber is carried out between the one the second heat dishes, drafting multiple 2.5 times, enter up-coiler from the second godet fibre bundle out and carry out package, winding speed 3700m/min, after winding, obtain polyamide-polyester blend FDY fiber.
This fibrous fracture intensity 3.81cN/dtex, elongation at break 26%, saturated water absorption is 1.09%, be in the carmoisine of 1: 20 in bath raio by gained fiber, dye 30 minutes under 93 DEG C of normal pressures, washing post-drying, detecting the dye-uptake obtaining this blended FDY fiber can reach 77%.Even dyeing, no color differnece, without lousiness.
Embodiment 4
Cut into slices dried 1kg nylon 56 (viscosity number 135mL/g, Amino End Group 48mol/ton) utilize single screw extrusion machine to import in 9kg polyethylene terephthalate (inherent viscosity 0.85dL/g) melt that completes of polymerization vacuum polymerization at 280 DEG C, system is evacuated to 500pa, holding temperature is 282 DEG C, through fully stirring, Melt Pump is utilized to import manifold, spinning is carried out at 282 DEG C, winding speed 800m/min, one-level drawing-off is carried out at 78 DEG C after obtaining polyesteramide as-spun fibre boundling, drafting multiple 2.8 times, 140 DEG C are carried out secondary drawing-off, drafting multiple 1.3 times, afterwards fiber is carried out curling, then HEAT SETTING is carried out 15 minutes at 180 DEG C, fiber after sizing is prescinded on cutting machine, obtaining fiber number after packing is 3.5dtex, length is the wool type polyamide-polyester blend staple fibre of 78mm.
This fibrous fracture intensity 2.09cN/dtex, elongation at break 68%, saturated water absorption is 1.53%, to be in the Vickery blue of 1: 20 in bath raio after this blend staple dimension and wool blend, dye 35 minutes under 90 DEG C of normal pressures, washing post-drying, detecting the dye-uptake obtaining this blending product can reach 82%.Even dyeing, no color differnece.
Embodiment 5
Cut into slices dried 1.5kg nylon 56 (viscosity number 155mL/g, Amino End Group 38mol/ton), 1.5kg nylon 56/66 is cut into slices, and (pentanediamine is equal with hexamethylene diamine molal quantity, viscosity number 152mL/g, Amino End Group 42mol/ton), 6kg polyethylene terephthalate (inherent viscosity 0.82dL/g) section and 2kg polytrimethylene terephthalate (inherent viscosity 0.79dL/g) section utilize single screw extrusion machine to import in 50L autoclave at 278 DEG C respectively, system is evacuated to 20000pa, and be heated to 280 DEG C, through fully stirring, Melt Pump is utilized to import manifold, spinning is carried out at 275 DEG C, winding speed 2800m/min, obtain polyamide-polyester blend POY fiber, by this fiber on elasticizer with the speed draw 1.6 times of 900m/min, preheating cabinet temperature is 220 DEG C, D/Y is 1.7, winding speed 1400m/min, obtain polyamide-polyester blend and add elater.
This fibrous fracture intensity 2.72cN/dtex, elongation at break 38%, saturated water absorption is 2.70%, be in the Vickery blue of 1: 20 in bath raio by gained fiber, dye 60 minutes under 95 DEG C of normal pressures, washing post-drying, detects and obtains the dye-uptake that this polyamide modified polyester adds elater and can reach 86%.Even dyeing, no color differnece, without lousiness.
Embodiment 2-5 have employed the raw material of different proportion and composition, and the dye-uptake of gained fiber can be promoted to more than 80%.
Embodiment 6
Cut into slices dried 2kg nylon 56 (viscosity number 165mL/g, Amino End Group 36mol/ton), 1kg nylon 512 is cut into slices (viscosity number 155mL/g, Amino End Group 33mol/ton), 4kg polyethylene terephthalate (inherent viscosity 0.83dL/g), 3kg polybutylene terephthalate (PBT) (inherent viscosity 0.80dL/g) melt and 2kg epoxy resin E-45 stir evenly rear importing double screw extruder, import in 50L autoclave at 260 DEG C, system is evacuated to 40000pa, spinning is carried out at 260 DEG C, winding speed 800m/min, one-level drawing-off is carried out at 68 DEG C after obtaining polyesteramide as-spun fibre boundling, drafting multiple 3.2 times, 135 DEG C are carried out secondary drawing-off, drafting multiple 1.3 times, afterwards fiber is carried out curling, then HEAT SETTING is carried out 15 minutes at 170 DEG C, fiber after sizing is prescinded on cutting machine, obtaining fiber number after packing is 1.8dtex, length is the cotton polyamide-polyester blend staple fibre of 38mm.
This fibrous fracture intensity 2.03cN/dtex, elongation at break 46%, crispation number 13/25cm, saturated water absorption 2.84%, be in the Vickery blue of 1: 20 in bath raio by gained fiber, dye 35 minutes under 90 DEG C of normal pressures, washing post-drying, detecting the dye-uptake obtaining the polyamide modified polyester copolymer staple fibre of this cotton can reach 88%.Even dyeing, no color differnece, without lousiness.
Adopting raw material to be on the basis of the polyamide of 1,5-pentanediamine and binary acid in embodiment 6, with the addition of a small amount of compatilizer further, obtained blended fiber dye-uptake slightly improves.
Embodiment 7
Cut into slices dried 3kg nylon 56 (viscosity number 180mL/g, Amino End Group 20mol/ton), 1kg nylon 510 is cut into slices (viscosity number 160mL/g, Amino End Group 33mol/ton), 3kg polyethylene terephthalate (inherent viscosity 0.85dL/g), 3kg polytrimethylene terephthalate (inherent viscosity 0.77dL/g) melt and 100g p-methyl benzenesulfonic acid and titanate coupling agent stir evenly rear importing double screw extruder, import in 50L autoclave at 280 DEG C, after sufficiently mixing, spinning manifold is entered after utilizing Melt Pump to measure, distribute through melt in the filament spinning component of spinning manifold, after homogenize, from spinneret hole, ejection forms melt stream, described melt stream is through supercooling, be that 1100m/min reels at spinning speed after oiling, obtain polyamide-polyester blend as-spun fibre.
This as-spun fibre fiber number 7dtex, fracture strength 1.0cN/dtex, elongation at break 370%, saturated water absorption 3.84%.
Embodiment 8
Cut into slices dried 2kg nylon 56 (viscosity number 155mL/g, Amino End Group 38mol/ton), 2kg nylon 66 slice (viscosity number 143mL/g, Amino End Group 45mol/ton), 3kg polyethylene terephthalate (inherent viscosity 0.85dL/g), 3kg polytrimethylene terephthalate (inherent viscosity 0.77dL/g) melt and 100g p-methyl benzenesulfonic acid and titanate coupling agent stir evenly rear importing double screw extruder, import in 50L autoclave at 280 DEG C, after sufficiently mixing, spinning manifold is entered after utilizing Melt Pump to measure, distribute through melt in the filament spinning component of spinning manifold, after homogenize, from spinneret hole, ejection forms melt stream, described melt stream is through supercooling, be that 1100m/min reels at spinning speed after oiling, obtain polyamide-polyester blend as-spun fibre.
This as-spun fibre fiber number 7dtex, fracture strength 1.4cN/dtex, elongation at break 290%, saturated water absorption 3.09%.
The explanation of above embodiment just to technical scheme, does not form the restriction to technical solution of the present invention.Those skilled in the art, can by the pulp furnish in adjustment preparation process according to the knowledge of existing fiber producing processes, and the temperature, pressure etc. of preparation process, to obtain the product of suitable performance.
Those skilled in the art it should be noted that embodiment described in the invention is only exemplary, can make other replacements various, changes and improvements within the scope of the invention.Thus, the invention is not restricted to above-mentioned embodiment, and be only defined by the claims.
Claims (20)
1. a blended fiber, the raw material of described blended fiber comprises polyamide and polyester, it is characterized in that, described polyamide comprises polyamide A, and the content of described polyamide A is 1 ~ 40 weight portion; The content of described polyester is 60 ~ 99 weight portions, and wherein, the raw material of described polyamide A is 1,5-pentanediamine and binary acid.
2. blended fiber according to claim 1, the content of wherein said polyamide A is 10 ~ 30 weight portions, and the content of described polyester is 70 ~ 90 weight portions.
3. blended fiber according to claim 1, wherein said polyamide A is 1, the mixture of the copolymer that the mixture of a kind of homopolymers that 5-pentanediamine and binary acid are polymerized or multiple homopolymers, 1,5-pentanediamine and at least two kinds of binary acid are polymerized or multiple copolymer or any aforesaid combination.
4. blended fiber according to claim 3, wherein said polyamide A is selected from the group be made up of polyamide 56, polyamide 510 and polyamide 512, is preferably polyamide 56.
5. blended fiber according to claim 1, the viscosity number of wherein said polyamide is 70 ~ 180mL/g, and terminal amino group content is 20 ~ 150mol/ton.
6. blended fiber according to claim 1, wherein said polyester be selected from the group be made up of polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate (PBT) one or more.
7. blended fiber according to claim 6, the inherent viscosity of wherein said polyester is 0.7 ~ 0.9dL/g.
8. blended fiber according to claim 1, the fiber number of wherein said blended fiber is 0.5 ~ 7dtex, and fracture strength is 1.0 ~ 5.5cN/dtex, and elongation at break is 15 ~ 370%.
9. blended fiber according to claim 8, the fiber number of wherein said blended fiber is 1.0 ~ 5.0dtex, and fracture strength is 1.5 ~ 5.0cN/dtex.
10. blended fiber according to claim 1, the dye-uptake of wherein said blended fiber acid dyeing is at ambient pressure more than 62%, is preferably more than 82%, is more preferably more than 86%.
11. blended fibers according to claim 1, the saturated water absorption of wherein said blended fiber is greater than 0.56%, is preferably greater than 2.70%, more preferably greater than 3.84%.
12. blended fibers according to claim 1, wherein said polyamide also comprises polyamide B, and the raw material of described polyamide B is caprolactam, or hexamethylene diamine and binary acid, and the weight of described polyamide B is not higher than the weight of described polyamide A.
13. blended fibers according to claim 12, wherein said polyamide B is one or more in polyamide 6, polyamide 66, polyamide 610, polyamide 612, is preferably polyamide 66.
14. blended fibers according to claim 1, wherein said polyamide is polyamide A.
15. blended fibers according to claim 1, the raw material of wherein said blended fiber also comprises additive, described additive is selected from one in delustering agent, age resister, antioxidant, heat stabilizer, fire retardant, pigment and dyestuff, conductive filler or antistatic filler or its combination, and the content of described additive is 0 ~ 20 weight portion.
16. blended fibers any one of claim 1 to 15, wherein said blended fiber is the blended as-spun fibre of polyamide polyester, polyamide polyester blended fiber long filament, polyamide polyester blended POY fiber, polyamide polyester are blended adds one in elater, the blended FDY fiber of polyamide polyester or polyamide polyester blend staple dimension or its combination.
The preparation method of 17. blended fibers any one of claim 1 to 16, comprising:
Described polyester and described polyamide are imported in blender, after mixing, obtains blend melt; And
Described blend melt is imported spinning machine and carries out spinning,
The temperature of wherein said mixing is 220 ~ 320 DEG C, and pressure is 20 ~ 101325Pa; Preferably, the temperature of described mixing is 260 ~ 290 DEG C, and pressure is 20 ~ 40000Pa.
18. preparation methods according to claim 17, wherein said mixing comprises and mixing after polyamide and polyester melt in container, or heating and melting is uniformly mixed after polyamide and polyester are directly added container, or mix directly injecting polyester after molten polyamide in polyester production process.
19. preparation methods according to claim 17, also comprise and add additive in a mixer, described additive is selected from one in delustering agent, age resister, antioxidant, heat stabilizer, fire retardant, pigment and dyestuff, conductive filler or antistatic filler or its combination, and the content of described additive is 0 ~ 20 weight portion.
20. 1 kinds of fabrics, this fabric is containing the blended fiber any one of with good grounds claim 1 to 16.
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| CN105040156B (en) | 2017-08-08 |
| CN107177903A (en) | 2017-09-19 |
| CN107177903B (en) | 2020-03-17 |
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