CN107354531A - A kind of modified PBT fiber spinning process - Google Patents
A kind of modified PBT fiber spinning process Download PDFInfo
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- CN107354531A CN107354531A CN201710667527.3A CN201710667527A CN107354531A CN 107354531 A CN107354531 A CN 107354531A CN 201710667527 A CN201710667527 A CN 201710667527A CN 107354531 A CN107354531 A CN 107354531A
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
-
- 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
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a kind of modified PBT fiber spinning process, is to be made by POY techniques, comprises the following steps：Pass through PETP, with 1, 3 butanediols, simultaneously with 5 sodium sulfonates 1, 3 xyxylene second diester are copolymerized to obtain modified PBT master batch, dried modified PBT master batch and glass fibre and titanium dioxide granule are extruded be mixed to prepare spinning melt at a certain temperature, after progress spinning obtains as-spun fibre in manifold after pre-filtering, by ring blow cooling system cool down and to cooling after tow oil, and seal wire is completed by godet system, modified PBT fiber normal temperature is made easily to contaminate deeply, color fastness is up to 4~4.5 grades, fracture strength is 2.3~3.0cN/dtex, elongation at break is 90%~110% fiber.Modified PBT fiber in the present invention introduces hydrophilic radical, so that easily dyed under normal temperature, with glass fibre and titanium dioxide granule blending the intensity of fiber can be made to get a promotion, and there is anti-ultraviolet function, obtained elongate fiber rate is higher to be easy to subsequently further draw high and process.
Description
Technical field
The present invention relates to spining technology field, more particularly to a kind of modified PBT fiber spinning process.
Background technology
With the raising of quality of the life, consumer increasingly carries to the demand of the multifunctional textile product such as comfortable, leisure, attractive in appearance
Height, to meet this demand, increasingly pay attention to the application and exploitation of multifunctional fibre during textile development.Elastomer
In occupation of firm status in world's textile industry, the features such as due to stockinette excellent personal, moulding, elastic fabric is from going out
Now just favored by consumer.
PBT fibers are the abbreviations of poly fiber, by high purity terephthalic acid (PTA) or to benzene two
The linear polymer of formic acid dimethyl ester (DMT) and BDO esterification aftercondensated, through fiber made from melt spinning, belongs to
One kind of polyester fiber.PBT and PET belong to polyester construction together, are frequently used to be compared.The yield of China's PET 2016 surpasses
39,000,000 tons are crossed, PBT fibers only have 100,000 tons；And PET yield in 2010, more than 25,000,000 tons, PBT fibers only have 10,000
Ton.220-225 DEG C of PBT fusing points of fiber, and 255-260 DEG C of PET fusing points of fiber.Comparatively PBT processing temperatures are relatively low, have
Beneficial to reduction energy consumption.
It is soft because PBT fibers are flexible excellent, easily dyeing, wrinkle resistant, Anti-moth-eating and mould, it is heat-resisting it is washable,
The features such as being easy to exquisite curling, in recent years by the common concern and extensive use of textile industry.Swum especially suitable for making
Clothing, tights, training clothes, gym outfit, tight, elastic force jean, ski trousers, stocking, medical-use bandage etc. will to elasticity
Ask higher textile, alternative spandex.It is at present to use polyamide fibre, wash in the aquatic products fiber art such as net, rope, setline more
Synthetic fibre etc., but the defects of fatigue durability is poor, easily rupturable be present, and PBT fibers are good in hygrometric state down spring retentivity, endurance
Property, wet-heat resisting climate performance are better than terylene.
In fiber art, current domestic more than the t of year expense about 100,000, and China's PBT fiber productions are small, much meet not
The market demand, the coming years, it is contemplated that elastic force jean, sweater, garment material and lining, gym suit and sports type underwear,
The fields such as swimming suit there will be over 150,000 t annual requirement.In addition, coming 10 years, carpet will significantly be increased with PBT fiber productions
It is long；At present China's polyamide fibre year usage amount in 1,000,000 t or so, and also have 5%~8% growth every year, and can be with PBT fibers
Substituted year usage amount in 100,000 t or so, market prospects are tempting.
But because PBT glass transition temperature is relatively low, in fiber formation process, fiber crystallization rate is faster than PET
10 times, begin to crystallize in spinning cooling procedure, rapid crystallization is caused in the fibre structure of acquisition, and crystallization is imperfect, to rear
Stretching is quite unfavorable, and the dyeing for easily causing finished silk is uneven.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of modified PBT fiber spinning process.
A kind of modified PBT fiber spinning process proposed by the present invention, the modified PBT fiber are made by POY techniques,
Including following spinning technique step：
1) synthesis modification PBT material, and modified PBT master batch is made in a kettle, is conveyed after modified PBT master batch is dried
It is dried into drying machine；
2) dried PBT master batches are extruded by screw rod at a certain temperature with glass fibre and titanium dioxide granule
Mixing, spinning melt is made；
3) spinning melt made from is transported in manifold and carried out after spinning obtains as-spun fibre after pre-filtering component,
Cooling system is blown by ring to cool down and oil to the tow after cooling, and seal wire is completed by godet system.
Preferably, the modified PBT material in the step 1) is synthesized by DMT methods, is divided into esterification and polycondensation is anti-
Two steps are answered to carry out, wherein DMT is 1 with 1,3-BDO mol ratio:1.1~1:1.5, and add relative to DMT mol ratios and be
0.5%~1.5% SIPM copolyreaction obtains modified PBT.
Preferably, the condition of the esterification is：Reacted under being acted under catalyst, reaction temperature is 170 DEG C~200
DEG C, reaction pressure is normal pressure, and the reaction time is 80~110min, and the catalyst is tetraethyl titanate, the n-propyl of metatitanic acid four, titanium
One or more in sour four N-butyls, and catalyst content is the 0.03%~0.1% of DMT mass, to distillate accessory substance first
Alcohol is as reaction end.
Preferably, the polycondensation reaction condition is：Reacted in the presence of catalyst and stabilizer, reaction temperature 240
DEG C~255 DEG C, reaction pressure is that absolute pressure is less than 300Pa, and the catalyst is together added with raw material before esterification,
The catalyst is the one or more in tetraethyl titanate, the n-propyl of metatitanic acid four, tetra-n-butyl titanate, and content is DMT matter
The 0.03%~0.1% of amount, the stabilizer are one kind in triphenyl phosphite, Trimethyl phosphite, the certain herbaceous plants with big flowers ester of phosphorous acid three
Or it is several, and stabiliser content is the 0.04%~0.12% of DMT mass, the reaction time is 120min~180min.
Preferably, the drying condition in the step 1) is 105 DEG C~140 DEG C, and drying time is 2~6h, and moisture content should
Less than 0.03%.
Preferably, glass fibre addition is the 5~20% of PBT master batch quality in the step 2), and titanium dioxide adds
Dosage is PBT master batches quality 0.2%~1.0%, and screw rod extrusion temperature is 265 DEG C~295 DEG C, spinning temperature is 280 DEG C~
290℃。
Preferably, the manifold in the step 3) includes measuring pump, spinneret and filament spinning component, the hole diameter of spinneret
For 0.15~0.3mm, and it is special-shaped spinneret orifice, is shaped as triangle.
Preferably, the ring blowing speed that the step 3) middle ring blows cooling system is 0.45~0.65m/s, and the humidity of wind is
75%~88%, wind-warm syndrome is 20 DEG C~32 DEG C, and fluctuations in wind speed need to be less than 0.5%.
Preferably, tow oil content is 0.5%~0.65% in the step 3), and winding speed is 3100~3300m/
min。
Preferably, the fracture strength of the modified PBT fiber is 2.3~3.0cN/dtex, elongation at break is 90%~
110%.
Beneficial effect in the present invention is：
(1) by adding SIPM (xyxylene second diester between 5- sodium sulfonates -1,3-) in PBT synthesis phase, notable
The glass transition temperature that is hydrophilic while can also reducing PBT material of PBT material is made in increase, that is, reduces crystallization temperature；
(2) organic titanium (tetraethyl titanate, the n-propyl of metatitanic acid four, tetra-n-butyl titanate) catalyst energy is added when simultaneously synthesizing
Promote the progress of esterification and polycondensation reaction, and stabilizer (triphenyl phosphite, phosphorous acid are added in polycondensation process
Trimethyl, the certain herbaceous plants with big flowers ester of phosphorous acid three) the PBT fibers that can ensure to produce have preferable mechanical property；
(3) bending modulus of fiber, tensile strength, bending strength and anti-can be increased by adding glass fibre co-blended spinning
Impact property, while add titanium dioxide in blending and cause fiber that there is ultraviolet absorption ability, can effectively it shield ultraviolet
Line；Triangle spinneret orifice is used simultaneously, the elasticity of fiber can be increased, there is bigger gloss effect, while fibre can be reduced
There is the situation of balling-up in dimension.
Embodiment
The present invention is made with reference to specific embodiment further to explain.
Embodiment 1
A kind of modified PBT fiber spinning process, the modified PBT fiber are made by POY techniques, and specific steps are such as
Under：
1) synthesis modification PBT material, and modified PBT master batch is made in a kettle, is conveyed after modified PBT master batch is dried
It is dried into drying machine；
2) dried PBT master batches are extruded by screw rod at a certain temperature with glass fibre and titanium dioxide granule
Mixing, spinning melt is made；
3) spinning melt made from is transported in manifold and carried out after spinning obtains as-spun fibre after pre-filtering component,
Cooling system is blown by ring to cool down and oil to the tow after cooling, and seal wire is completed by godet system.
Modified PBT material is synthesized by DMT methods in the step 1), is divided into esterification and the stepping of polycondensation reaction two
OK, wherein DMT and 1,3-BDO mol ratio are 1:1.3, and add and be copolymerized instead relative to the SIPM that DMT mol ratios are 1.5%
Modified PBT should be obtained；
The condition of the esterification is that reaction temperature is 190 DEG C, and reaction pressure is normal pressure, reaction time 90min, is urged
Agent is tetra-n-butyl titanate, and catalyst content (in terms of Ti content) is the 0.07% of DMT mass, to distillate accessory substance first
Alcohol content, which no longer becomes, is turned to reaction end；
The polycondensation reaction condition is：Reaction temperature is 255 DEG C, and reaction pressure is absolute pressure 500Pa, and catalyst is in ester
Together added with raw material before changing reaction, catalyst is tetra-n-butyl titanate, and catalyst content (in terms of Ti content) is DMT mass
0.07%, stabilizer is Trimethyl phosphite, and stabiliser content is the 0.08% of DMT mass, and the reaction time is
150min。
Drying condition is 140 DEG C in the step 1), drying time 2h.
Glass fibre addition is the 10% of gross mass in the step 2), and titanium dioxide addition is 0.5%, screw rod
Extrusion temperature is 285 DEG C, and spinning temperature is 290 DEG C.
Manifold includes measuring pump, spinneret and filament spinning component in the step 3), and the hole diameter of spinneret is 0.2mm,
And be special-shaped spinneret orifice, it is shaped as triangle.
Step 3) the middle ring blowing speed is 0.6m/s, and the humidity of wind is 80%, and wind-warm syndrome is 25 DEG C.
Tow oil content is 0.65% in the step 3), winding speed 3300m/min.
It is 1.1dtex that modified PBT fibre single thread fiber number, which is made, fracture strength position 2.5cN/dtex, and elongation at break is
90%, Washing, staining color fastness reach 4 grades, reach 95% to the dark dye dye-uptake such as black and navy.
Embodiment 2
A kind of modified PBT fiber spinning process, the modified PBT fiber are made by POY techniques, and specific steps are such as
Under：
1) synthesis modification PBT material, and modified PBT master batch is made in a kettle, is conveyed after modified PBT master batch is dried
It is dried into drying machine；
2) dried PBT master batches are extruded by screw rod at a certain temperature with glass fibre and titanium dioxide granule
Mixing, spinning melt is made；
3) spinning melt made from is transported in manifold and carried out after spinning obtains as-spun fibre after pre-filtering component,
Cooling system is blown by ring to cool down and oil to the tow after cooling, and seal wire is completed by godet system.
Modified PBT material is synthesized by DMT methods in the step 1), is divided into esterification and the stepping of polycondensation reaction two
OK, wherein DMT and 1,3-BDO mol ratio are 1:1.1, and add and (be copolymerized anti-relative to the SIPM that DMT mol ratios are 0.5%
Modified PBT should be obtained；
The condition of the esterification is that reaction temperature is 170 DEG C, and reaction pressure is normal pressure, reaction time 110min,
Catalyst is tetra-n-butyl titanate, and catalyst content (in terms of Ti content) is the 0.1% of DMT mass, to distillate accessory substance
Methanol content, which no longer becomes, is turned to reaction end；
The polycondensation reaction condition is：Reaction temperature is 255 DEG C, and reaction pressure is absolute pressure 500Pa, and catalyst is in ester
Together added with raw material before changing reaction, catalyst is tetra-n-butyl titanate, and catalyst content (in terms of Ti content) is DMT mass
0.1%, stabilizer is Trimethyl phosphite, and stabiliser content is the 0.1% of DMT mass, reaction time 130min.
Drying condition is 120 DEG C in the step 1), drying time 4h.
Glass fibre addition is the 20% of gross mass in the step 2), and titanium dioxide addition is 0.5%, screw rod
Extrusion temperature is 275 DEG C, and spinning temperature is 285 DEG C.
Manifold includes measuring pump, spinneret and filament spinning component in the step 3), and the hole diameter of spinneret is 0.15mm,
And be special-shaped spinneret orifice, it is shaped as triangle.
Step 3) the middle ring blowing speed is 0.5m/s, and the humidity of wind is 80%, and wind-warm syndrome is 28 DEG C.
Tow oil content is 0.55% in the step 3), winding speed 3000m/min.
It is 1.5dtex that modified PBT fibre single thread fiber number, which is made, fracture strength position 2.8cN/dtex, and elongation at break is
100%, Washing, staining color fastness reach 4.5 grades, reach 95% to the dark dye dye-uptake such as black and navy.
Embodiment 3
A kind of modified PBT fiber spinning process, the modified PBT fiber are made by POY techniques, and specific steps are such as
Under：
1) synthesis modification PBT material, and modified PBT master batch is made in a kettle, is conveyed after modified PBT master batch is dried
It is dried into drying machine；
2) dried PBT master batches are extruded by screw rod at a certain temperature with glass fibre and titanium dioxide granule
Mixing, spinning melt is made；
3) spinning melt made from is transported in manifold and carried out after spinning obtains as-spun fibre after pre-filtering component,
Cooling system is blown by ring to cool down and oil to the tow after cooling, and seal wire is completed by godet system.
Modified PBT material is synthesized by DMT methods in the step 1), is divided into esterification and the stepping of polycondensation reaction two
OK, wherein DMT and 1,3-BDO mol ratio are 1:1.4, and add and be copolymerized instead relative to the SIPM that DMT mol ratios are 1.1%
Modified PBT should be obtained；
The condition of the esterification is that reaction temperature is 180 DEG C, and reaction pressure is normal pressure, reaction time 100min,
Catalyst is the n-propyl of metatitanic acid four, and catalyst content (in terms of Ti content) is the 0.05% of DMT mass, to distillate accessory substance
Methanol content, which no longer becomes, is turned to reaction end；
The polycondensation reaction condition is：Reaction temperature is 245 DEG C, and reaction pressure is absolute pressure 500Pa, and catalyst is in ester
Together added with raw material before changing reaction, catalyst is the n-propyl of metatitanic acid four, and catalyst content (in terms of Ti content) is DMT mass
0.05%, stabilizer is Trimethyl phosphite and triphenyl phosphite mixture, and stabiliser content is DMT mass
0.05%, reaction time 180min.
Drying condition is 110 DEG C in the step 1), drying time 5h.
Glass fibre addition is the 20% of gross mass in the step 2), and titanium dioxide addition is 1.0%, screw rod
Extrusion temperature is 285 DEG C, and spinning temperature is 290 DEG C.
Manifold includes measuring pump, spinneret and filament spinning component in the step 3), and the hole diameter of spinneret is 0.3mm,
And it is triangle spinneret orifice.
Step 3) the middle ring blowing speed is 0.45m/s, and the humidity of wind is 75%, and wind-warm syndrome is 25 DEG C.
Tow oil content is 0.65% in the step 3), winding speed 3100m/min.
It is 1.8dtex that modified PBT fibre single thread fiber number, which is made, fracture strength position 2.8cN/dtex, and elongation at break is
105%, Washing, staining color fastness reach 4.5 grades, reach 95% to the dark dye dye-uptake such as black and navy.
Embodiment 4
A kind of modified PBT fiber spinning process, the modified PBT fiber are made by POY techniques, and specific steps are such as
Under：
1) synthesis modification PBT material, and modified PBT master batch is made in a kettle, is conveyed after modified PBT master batch is dried
It is dried into drying machine；
2) dried PBT master batches are extruded by screw rod at a certain temperature with glass fibre and titanium dioxide granule
Mixing, spinning melt is made；
3) spinning melt made from is transported in manifold and carried out after spinning obtains as-spun fibre after pre-filtering component,
Cooling system is blown by ring to cool down and oil to the tow after cooling, and seal wire is completed by godet system.
Modified PBT material is synthesized by DMT methods in the step 1), is divided into esterification and the stepping of polycondensation reaction two
OK, wherein DMT and 1,3-BDO mol ratio are 1:1.5, and add and be copolymerized instead relative to the SIPM that DMT mol ratios are 1.5%
Modified PBT should be obtained；
The condition of the esterification is that reaction temperature is 200 DEG C, and reaction pressure is normal pressure, reaction time 90min, is urged
Agent is tetra-n-butyl titanate, and catalyst content (in terms of Ti content) is the 0.1% of DMT mass, to distillate accessory substance first
Alcohol content, which no longer becomes, is turned to reaction end；
The polycondensation reaction condition is：Reaction temperature is 265 DEG C, and reaction pressure is absolute pressure 500Pa, and catalyst is in ester
Together added with raw material before changing reaction, catalyst is tetra-n-butyl titanate, and catalyst content (in terms of Ti content) is DMT mass
0.1%, stabilizer is Trimethyl phosphite and triphenyl phosphite mixture, and stabiliser content is DMT mass
0.12%, reaction time 120min.
Drying condition is 105 DEG C in the step 1), drying time 6h.
Glass fibre addition is the 15% of gross mass in the step 2), and titanium dioxide addition is 1.0%, screw rod
Extrusion temperature is 295 DEG C, and spinning temperature is 290 DEG C.
Manifold includes measuring pump, spinneret and filament spinning component in the step 3), and the hole diameter of spinneret is 0.3mm,
And it is triangle spinneret orifice.
Step 3) the middle ring blowing speed is 0.6m/s, and the humidity of wind is 80%, and wind-warm syndrome is 25 DEG C.
Tow oil content is 0.65% in the step 3), winding speed 3300m/min.
It is 1.2dtex that modified PBT fibre single thread fiber number, which is made, fracture strength position 3.0cN/dtex, and elongation at break is
110%, Washing, staining color fastness reach 4.5 grades, reach 95% to the dark dye dye-uptake such as black and navy.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
- A kind of 1. modified PBT fiber spinning process, it is characterised in that：The modified PBT fiber is made by POY techniques, bag Include following spinning technique step：1) synthesis modification PBT material, and modified PBT master batch is made in a kettle, is transported to dry after modified PBT master batch is dried It is dried in dry machine；2) dried PBT master batches and glass fibre and titanium dioxide granule are extruded by screw rod at a certain temperature mixed Close, spinning melt is made；3) spinning melt made from is transported in manifold and after spinning obtains as-spun fibre, pass through after pre-filtering component Ring blows cooling system and cools down and oiled to the tow after cooling, and completes seal wire by godet system.
- A kind of 2. modified PBT fiber spinning process as described in claim 1, it is characterised in that：Changing in the step 1) Property PBT material be to be synthesized by DMT methods, being divided into esterification and the step of polycondensation reaction two is carried out, and wherein DMT rubs with 1,3-BDO You are than being 1:1.1~1:1.5, and add and be modified relative to the SIPM copolyreaction that DMT mol ratios are 0.5%~1.5% PBT。
- A kind of 3. modified PBT fiber spinning process as claimed in claim 1 or 2, it is characterised in that：The bar of the esterification Part is：Reacted under being acted under catalyst, reaction temperature is 170 DEG C~200 DEG C, and reaction pressure is normal pressure, the reaction time 80 ~110min, the catalyst is the one or more in tetraethyl titanate, the n-propyl of metatitanic acid four, tetra-n-butyl titanate, and is urged Agent content is the 0.03%~0.1% of DMT mass, to distillate by-product carbinol as reaction end.
- A kind of 4. modified PBT fiber spinning process as claimed in claim 1 or 2, it is characterised in that：The polycondensation reaction condition It is：Reacted in the presence of catalyst and stabilizer, reaction temperature is 240 DEG C~255 DEG C, and reaction pressure is less than for absolute pressure 300Pa, the catalyst are together added with raw material before esterification, the catalyst be tetraethyl titanate, metatitanic acid four just One or more in propyl ester, tetra-n-butyl titanate, and content is the 0.03%~0.1% of DMT mass, the stabilizer is Asia One or more in triphenyl phosphate, Trimethyl phosphite, the certain herbaceous plants with big flowers ester of phosphorous acid three, and stabiliser content is DMT mass 0.04%~0.12%, the reaction time is 120min~180min.
- A kind of 5. modified PBT fiber spinning process as described in claim 1, it is characterised in that：Dried in the step 1) Condition is 105 DEG C~140 DEG C, and drying time is 2~6h, and moisture content should be less than 0.03%.
- A kind of 6. modified PBT fiber spinning process as described in claim 1, it is characterised in that：Glass in the step 2) Fiber addition is the 5~20% of PBT master batch quality, and titanium dioxide addition is PBT master batches quality 0.2%~1.0%, spiral shell Swing arm extrusion temperature is 265 DEG C~295 DEG C, and spinning temperature is 280 DEG C~290 DEG C.
- A kind of 7. modified PBT fiber spinning process as described in claim 1, it is characterised in that：Spinning in the step 3) Silk case includes measuring pump, spinneret and filament spinning component, and the hole diameter of spinneret is 0.15~0.3mm, and is special-shaped spinneret orifice, shape Shape is triangle.
- A kind of 8. modified PBT fiber spinning process as described in claim 1, it is characterised in that：Step 3) the middle ring is blown The ring blowing speed of cooling system is 0.45~0.65m/s, and the humidity of wind is 75%~88%, and wind-warm syndrome is 20 DEG C~32 DEG C, and wind Speed fluctuation need to be less than 0.5%.
- A kind of 9. modified PBT fiber spinning process as described in claim 1, it is characterised in that：Tow in the step 3) Oil content is 0.5%~0.65%, and winding speed is 3100~3300m/min.
- A kind of 10. modified PBT fiber spinning process as described in claim 1, it is characterised in that：The modified PBT fiber Fracture strength be 2.3~3.0cN/dtex, elongation at break is 90%~110%.
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| WO2021039528A1 (en) * | 2019-08-23 | 2021-03-04 | 三菱ケミカル株式会社 | Acrylic fiber, and spun yarn and knitted fabric comprising said fiber |
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| CN115418742B (en) * | 2022-09-26 | 2024-02-27 | 无锡市兴盛新材料科技有限公司 | High-wear-resistance PBT composite yarn and production method thereof |
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