CN110424061A - A kind of polytetrafluoroethylene (PTFE) Coloured film splits long filament and preparation method thereof - Google Patents
A kind of polytetrafluoroethylene (PTFE) Coloured film splits long filament and preparation method thereof Download PDFInfo
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- CN110424061A CN110424061A CN201910702029.7A CN201910702029A CN110424061A CN 110424061 A CN110424061 A CN 110424061A CN 201910702029 A CN201910702029 A CN 201910702029A CN 110424061 A CN110424061 A CN 110424061A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- 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
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
- D01D5/426—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by cutting films
-
- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/06—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/48—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of halogenated hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C2043/106—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using powder material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a kind of polytetrafluoroethylene (PTFE) Coloured films to split long filament and preparation method thereof, using inorganic high-temperature resistant pigment fine powder and PTFE dispersion resin as raw material, after being sufficiently mixed, with lubricator stirring reconciles again, is prepared through precompressed, pushing, calendering film forming, drying defatted, heating stretching, thermal finalization twisting, winding finished product process.PTFE Coloured film of the present invention splits long filament color and enriches, bright in luster, good color fastness.It solves the problems, such as the big of PTFE coloring difficulty, improves the service performance and added value of PTFE, expand the use scope of high-tech PTFE fiber.
Description
Technical field
The invention belongs to fabric manufacturing areas, and in particular to a kind of polytetrafluoroethylene (PTFE) Coloured film splits long filament and its preparation side
Method, polytetrafluoroethylene (PTFE) Coloured film of the present invention, which splits long filament, can be used for braided wire, cable outer jointing jacket and prepares other technology weavings
Product.
Background technique
Polytetrafluoroethylene (PTFE) (Polytetrafluoroethene, PTFE) is a kind of polarity high-molecular compound, is macromolecular
Linear structure, branchiess symmetrical backbone structure, the crystallinity with height are perfluorinated straight chain high polymer.Since its is special
Molecular structure and with the chemical stability of height, extremely strong high and low temperature resistance, good non-stick, lubricity and excellent
The excellent properties such as different electrical insulating property, resistance to ag(e)ing.But the characteristic of molecular structure also makes it not by extraneous any substance
Invasion, dye molecule can not make its dyeing and the weakness of PTFE in conjunction with its structure.Existing PTFE available on the market
Fiber, based on white and brown (sintering process is made), reason is that the compatibility of PTFE and other materials is poor, dissolution
Parameter is minimum, and PTFE cannot be dyed using conventional colouring method.
Summary of the invention
The purpose of the present invention is overcoming above-mentioned shortcoming, a kind of polytetrafluoroethylene (PTFE) Coloured film is provided and splits long filament.
It is a still further object of the present invention to provide the preparation methods that above-mentioned polytetrafluoroethylene (PTFE) Coloured film splits long filament.This method is
Using inorganic high-temperature resistant pigment fine powder, it is sufficiently mixed, with lubricator reconciles, through pressing with PTFE dispersion resin end by a certain percentage
The preparation of the processes such as mould, calendering.It is specific for this due to being added to inorganic high-temperature resistant pigment fine powder in preparation method of the present invention
Factor has made beneficial adjustment to the process conditions of each process simultaneously, makes colored fibre performance obtained not because of the addition of pigment
And reduce, and fiber colour is many kinds of, color fastness can fully meet user's needs, make PTFE Coloured film split long filament military project,
Each field such as civilian plays bigger effect.
The purpose of the present invention is what is be accomplished by the following way:
A kind of polytetrafluoroethylene (PTFE) Coloured film splits long filament, using inorganic high-temperature resistant pigment fine powder and PTFE dispersion resin as former material
Material, after being sufficiently mixed, then with lubricator stirring reconciliation, through precompressed, pushing, calendering film forming, drying defatted, heating stretch, heat is determined
Type twisting, winding finished product process are prepared.
The dosage weight ratio of inorganic high-temperature resistant pigment fine powder and PTFE dispersion resin is 0.3-1.0:100.
Resistance to 380 DEG C of the inorganic high-temperature resistant pigment fine powder or more high temperature, partial size are 25-50 μm and pass through desalting processing.
This is because the size of granules of pigments, will directly affect the color fastness of color silk.Pigment fine powder is mainly removed through desalting processing
In metal ion.
The method of the desalting processing is conventional desalination process, it is therefore an objective to crystallize inorganic salts and separation is precipitated.It is described
PTFE dispersion resin be to take crystallinity 98%, average grain diameter is 200-300 μm of PTFE resin powder, is being lower than 19 DEG C of item
Under part, after the screening of 8-20 mesh filter screen, the resin-oatmeal that agglomerated particle obtains is removed.
The weight proportion of the lubricant and PTFE dispersion resin is 10-22:100.The ratio that lubricant of the present invention uses
Example should not be too big, otherwise will cause that internal voids are excessive, and prefabrication shrinking percentage is big, and breakdown potential is forced down；Ratio is also unsuitable too small, no
Phenomena such as resistance is big when then pushing, and product is easy to produce cracking.
Preferred emollient is paraffin oil, petroleum ether, white oil kerosene, aviation kerosine, most preferably aviation kerosine.Especially navigate
Empty kerosene has good lubricity, readily permeable into inorganic high-temperature resistant pigment fine powder and PTFE dispersion resin, dry de-
Rouge process can all volatilize, without any residue in product.
The reconciliation condition of the lubricant are as follows: under the conditions of environment temperature is lower than 19 DEG C, stir 1-2hr, then in 25-
Curing 5-24hr is carried out under the conditions of 30 DEG C.It is preferred that the reconciliation condition of aviation kerosine are as follows: under the conditions of environment temperature is lower than 19 DEG C,
1-1.5hr is stirred, then carries out curing 20-24hr under the conditions of 25-30 DEG C.The control of reconciliation environment temperature and curing temperature,
It can prevent PTFE from phase-state change occurs and to keep lubricant fully penetrated uniformly.
Except oil temperature is 290-310 DEG C in drying defatted of the present invention.The present invention will more conventional PTFE except oil temperature
Long filament production except oil temperature it is low, not only can guarantee that lubricant sufficiently volatilized in this way, but also do not influence the colour brightness of long filament.
Above-mentioned polytetrafluoroethylene (PTFE) Coloured film split the preparation method of long filament specifically includes the following steps:
(1) selection of pigment: taking resistance to 380 DEG C or more high temperature, and partial size is 25-50 μm and passes through the inorganic resistance to height of desalting processing
Warm pigment fine powder；
(2) processing of dispersion resin: by crystallinity 98%, the PTFE dispersion resin that average grain diameter is 200-300 μm, In
It under conditions of 19 DEG C, is sieved with 8-20 mesh filter screen, removes agglomerated particle；
(3) raw material mix: will handle obtained pigment, PTFE dispersion resin by step (1) and step (2), sufficiently
After being uniformly mixed, then with lubricator mixed；
PTFE dispersion resin, lubricant, pigment ratio be 100:10-22:0.3-1.0 ratio, with lubricator carry out
When mixing, hybird environment temperature is lower than 19 DEG C, stirs 1-2hr, and maturation process 5-24hr is carried out under the conditions of 25-30 DEG C；
(4) precompressed, pushing: the prefabricated powder after curing pours into preformer and carries out precompressed, preformer pressure in 5.5-6MPa,
Squeeze time is 15-20min, and the mechanograph pressed in advance is placed on pushing machine and is pushed, and pushes the pressure 8- of machine
9MPa, pushes 50-60 DEG C of die temperature by 30-35 DEG C of temperature of material chamber when pushing, and 20-25 DEG C of environment temperature, sink temperature
40-60 DEG C, mouth mold compression ratio be 130-150, draw ratio 40-45,30-35 ° of cone angle；Through precompressed, after pushing, mixture system
At cylindric PTFE mold base；
(5) calendering film forming: cylindrical PTFE film base enters fishtail guide plate, under the action of calender stack, system
At calendered film；It is preferred that roll roller diameter 1500mm, width 300mm, speed 1.5-12m/min, hot water temperature in stretcher roll
50-80 DEG C, calendered film width is in 16-25cm, thickness 0.25-0.45mm；
(6) drying defatted: lubricant in PTFE as-spun fibre is removed；Except 290-310 DEG C of oil temperature, oil removing time 3-6
Second；
(7) heating stretches for the first time: the base band after step (6) degreasing carries out heating stretching into drawing oven, is drawing
310-330 DEG C of temperature is stretched, is stretched under the conditions of feeding speed 3-6m/min, output speed 15-30m/min, strip PTFE film
It after band drawn after supercooling damping roller carries out cooling, then is wound up on film tape spool, the film band after winding is in room temperature
Hot wire-CVD 1-2hr in 40-50 DEG C of moist closet；
(8) cutting, second of heating stretch: first cutting the strip PTFE film band of forming winding, cutter device
In tension state, tension force is in 80-120%；Cutting uses coaxial blade patterning method, blade thickness 0.12-0.25
㎜, cuts into the flat filament of 5-30 ㎜, and the wire velocity control of cutting cuts the two Gen Biansi recycling on both sides in 1.8-2.0m/min
It recycles；Then the flat filament after cutting enters second of heating of baking oven progress and stretches, and temperature is controlled at 330-350 DEG C, inputs speed
Degree is 2-6m/min, and 6-10 times of draw ratio, output speed 16-60m/min is wound after output；
(9) thermal finalization is twisted: the flat filament by second of heating stretching and winding is twisted again by thermal finalization, heat setting temperature
Control enters twisting mill at 340-370 DEG C, setting time 0.5-1.2min, after sizing and twists into finished silk, orientation S
It twists, twist 200-1200 twirl/m, feeds output speed 35-40m/min；
(10) wind finished product: the finished silk after thermal finalization is twisted is wound up on paper tube in wireline reel.
Beneficial outcomes of the invention compared with the prior art:
1, the present invention solves the problems, such as the big of PTFE coloring difficulty, improves the service performance and added value of PTFE, expands
The use scope of high-tech PTFE fiber.
2, the present invention uses lubricant, carries out ungrease treatment at a lower temperature, and particularly preferably aviation kerosine is profit
Lubrication prescription, PTFE film band can go most lubricant and product color bright-coloured.It is recycled moreover, aviation kerosine is recyclable,
Meet green production requirement.
3, the present invention selects resistance to 380 DEG C or more high temperature, and partial size is 25-50 μm and the inorganic high-temperature resistant Jing Guo desalting processing
Pigment fine powder makes pigment adapt to each process process conditions in preparation process, it is ensured that the stability of pigment during the preparation process, really
Protect the excellent performance of product.
4, the present invention is using inorganic high-temperature resistant pigment fine powder as colorant, in conjunction with specific lubricant, to polytetrafluoroethylene (PTFE) point
It dissipates toner and long filament is split using paste extrusion production polytetrafluoroethylene (PTFE) Coloured film, obtained PTFE Coloured film splits long filament color
It is abundant, bright in luster, good color fastness.
Specific embodiment
Below with reference to embodiment, invention is further described in detail, it is clear that described embodiment is only this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiments of the present invention, those of ordinary skill in the art are not having
It makes and obtains all other embodiment under the premise of creative work, belong to the scope of the present invention.
Embodiment 1
The preparation process that polytetrafluoroethylene (PTFE) black film splits long filament is as follows:
(1) the cobalt oxide night right black pigment for selecting the production of Hunan Nuo Li new material Science and Technology Ltd. is colored fibre
Colorant, the cobalt black pigment of purchase first carry out r for 24 hours and water are added to grind.Milling apparatus is limited by the permanent sharp grinding machinery manufacture of Yancheng City
Company's production.Pigment after grinding is filtered through 400 mesh and 1280 mesh twice metallic screens, desalination (removal ionizable metal salt), rear to dry
Dry, resistance to 380 DEG C of obtained colorant or more high temperature, partial size is 25-50 μm.
(2) the DF204 polytetrafluoroethyldispersion dispersion resin (crystallinity of Shandong Dongyue Polymer Material Co., Ltd.'s production is selected
98%, average grain diameter is 200-300 μm), under conditions of being lower than 19 DEG C, is sieved with the strainer of 20 mesh, remove agglomerated particle.
(3) lubricant uses the aviation kerosine of China Aviation Oil Corporation's production.
It takes to pour into 20 ㎏ dispersion resins by pretreated 0.1 ㎏ cobalt black pigment fine powder and mix, delay after mixing
Slowly the aviation kerosine for pouring into 2 ㎏ is stirred, mixing time 1hr under the conditions of being lower than 19 DEG C with low-speed mixer (rpm 50).
Mixed material is placed 20hr under the conditions of room temperature (25-30 DEG C) and is cured.
(4) the prefabricated powder of above-mentioned maturation process is poured into and mixes the top that barrel is raised to preformer by elevator, will mixed
Material is poured slowly into preformer die cavity, and the material in barrel is most, in order to avoid color difference is formed between batches.The pressure of preformer is
5.5MPa, squeeze time 20min.Preformer die cavity covers extrusion lid, lies in a horizontal plane on pushing machine and is pushed.Pushing machine pressure
Power is 8.5MPa, 35 DEG C of chamber temperature of pushing material, 55 DEG C of die temperature of pushing, 20 DEG C of environment temperature, sink temperature 50 C, and mouth mold pressure
Contract ratio 130, draw ratio 40, and 30 ° of cone angle.Mixture forms the cylindrical mold base that diameter is 14.5mm after precompressed, pushing.
(5) cylindrical PTFE film base enters fishtail guide plate, and on calender, diameter is 150 ㎝, and width is 30 ㎝ pressure
Prolong and wide 16 ㎝, the calendered film of 0.25 ㎝ of thickness is made under roller effect.Calendering roller speed is 12m/min, the hot water temperature of stretcher roll
60 DEG C of degree rolls 70 DEG C of roll surface temperature.
(6) the calendering base band after rolling enters oil removal box, will moisten in PTFE as-spun fibre on wireline reel after unreeling
Lubrication prescription removal, 290 DEG C of oil removal box temperature, feeding and output speed be 30m/min, the oil removing time 6 seconds；Base band after oil removing degreasing
Through supercooled water roller, hurried cooling is carried out to base band, the base band temperature near room temperature of cabinet, the calendering base band after oil removing are smooth out
Ground is on base band roller.
(7) base band roller unreels, and so that base band is entered baking oven and carries out heating stretching, base band feeding speed 4m/min, oven temperature
320 DEG C, output speed 18m/min, draw ratio is 4 times, and film bandwidth passes through after 4 ㎝, strip PTFE film band drawn
It after supercooling damping roller carries out cooling, then is wound up on film tape spool, the film band after winding is in the moist closet that room temperature is 40 DEG C
Hot wire-CVD 1hr；
(8) base band disk is unreeled into cutting device, and cutter device is in tension state, and tension force is 120%；Cutting is adopted
With coaxial blade patterning method, base band is cut into flat filament 34 of 5mm wide, the wire velocity control of cutting removes two in 2.0m/min
Outside Gen Biansi, baking oven is respectively enterd by tape divider, carries out reheating stretching, oven temperature is at 350 DEG C, feeding speed
2m/min, output speed 16m/min, blade thickness 0.15mm, two Gen Biansi on the winding head below cutting device,
32 flat filaments of remaininging pass through heater box, after heated stretching respectively on subsequent wireline reel.
(9) flat filament stretched after cutting through heating is twisted again by thermal finalization, 20 ㎝ of heat set zone length, and temperature control exists
370 DEG C, setting time 1.2min, twisting mill twisting is entered after sizing into finished silk, orientation S is twisted and twists, 450 twirls of the twist/m,
Feed output speed 40m/min.
(10) the black polytetrafluoroethylene film after sizing twisting splits winding filament on paper tube, and it is qualified as quotient to be examined
Product silk is sold.
5 samples are taken to be tested as follows in parallel:
1 product PTFE black film of embodiment splits continuous yarn product testing performance index result
Above-mentioned test is executed according to GB/T35748-2017 " vinyl fluoride long filament in poly- " standard.
Embodiment 2
The preparation process that polytetrafluoroethylene (PTFE) red membrane splits long filament is as follows:
(1) the cadmium red inorganic pigment for selecting the production of Hunan Nuo Li new material Science and Technology Ltd. is colored fibre colorant,
The cadmium red inorganic pigment of purchase first carries out r for 24 hours and water is added to grind.Milling apparatus is by Yancheng City Heng Li grinding machinery Manufacturing Co., Ltd
Production.Pigment after grinding is filtered through 400 mesh and 1280 mesh twice metallic screens, desalination (removal ionizable metal salt), rear to dry.
Resistance to 380 DEG C of the colorant arrived or more high temperature, partial size are 25-50 μm.
(2) the CGF216G type polytetrafluoroethyldispersion dispersion resin (knot of Zhong Hao Chenguang Research Institute of Chemical Industry Co., Ltd production is selected
Brilliant degree 98%, average grain diameter are 200-300 μm), dispersion resin needs to store at 19 DEG C or less, under conditions of being lower than 19 DEG C,
The strainer of 20 mesh is used to sieve when use, first to remove agglomerated particle.
(3) lubricant inspires confidence in the aviation kerosine of lubricating oil Co., Ltd production using Shenyang ten thousand.
It takes to pour into 20 ㎏ dispersion resins by pretreated 0.1 ㎏ cadmium red pigment fine powder and mix, delay after mixing
Slowly the aviation kerosine for pouring into 4 ㎏ is stirred, mixing time 1hr under the conditions of being lower than 19 DEG C with low-speed mixer (rpm 50).
Raw material carries out under the conditions of being blended in lower than 19 DEG C, stirs 1.5hr, and mixed material is placed under the conditions of room temperature (25-30 DEG C)
20hr is cured.
(4) the prefabricated powder of above-mentioned maturation process is poured into and mixes the top that barrel is raised to preformer by elevator, will mixed
Material is poured slowly into preformer die cavity, and the material in barrel is most, in order to avoid color difference is formed between batches.The pressure of preformer is
5.0MPa, squeeze time 20min.Preformer die cavity covers extrusion lid, lies in a horizontal plane on pushing machine and is pushed.Pushing machine pressure
Power is 8.5MPa, 35 DEG C of chamber temperature of pushing material, 55 DEG C of die temperature of pushing, 20-25 DEG C of environment temperature, sink temperature 50 C mouth
Mold compression is than 130, draw ratio 40, and 35 ° of cone angle.Mixture forms the cylindrical mold base that diameter is 14.5mm after precompressed, pushing.
(5) cylindrical PTFE film base enters fishtail guide plate, and on calender, diameter is 150 ㎝, and width is 30 ㎝ pressure
Prolong and wide 16 ㎝, the calendered film of 0.4 ㎝ of thickness is made under roller effect.Calendering roller speed is 12m/min, the hot water temperature of stretcher roll
60 DEG C, roll 70 DEG C of roll surface temperature.
(6) the calendering base band after rolling enters oil removal box, will moisten in PTFE as-spun fibre on wireline reel after unreeling
Lubrication prescription removal, 310 DEG C of oil removal box temperature, feeding and output speed be 35m/min, the oil removing time 6 seconds, the base band after oil removing degreasing
Through supercooled water roller, hurried cooling is carried out to base band, the base band temperature near room temperature of cabinet, the calendering base band after oil removing are smooth out
Ground is on base band roller.
(7) base band roller unreels, and so that base band is entered baking oven and carries out heating stretching, base band feeding speed 6m/min, oven temperature
320 DEG C, output speed 18m/min, draw ratio is 5 times, after film bandwidth 4 ㎝, strip PTFE film band drawn by
It after cooling damping roller carries out cooling, then is wound up on film tape spool, the heat in the moist closet that room temperature is 50 DEG C of the film band after winding
Relaxation 1hr；
(8) base band disk is unreeled into cutting device, and cutter device is in tension state, and tension force is 120%；Cutting is adopted
With coaxial blade patterning method, the base band of 8cm wide is cut into flat filament 34 of 5mm wide, the wire velocity control of cutting is in 2.0m/
Min respectively enters baking oven by tape divider, carries out reheating stretching in addition to two Gen Biansi, and oven temperature is fed at 350 DEG C
Enter speed 2m/min, output speed 16m/min, the winding of blade thickness 0.15mm, two Gen Biansi below cutting device
On head, remaining 32 flat filament passes through heater box, after heated stretching respectively on subsequent wireline reel.
(9) flat filament stretched after cutting through heating is twisted again by thermal finalization, 20 ㎝ of heat set zone length, and temperature control exists
340 DEG C, setting time 1.2min, twisting mill twisting is entered after sizing into finished silk, orientation S is twisted and twists, the twist 450 is twisted, and is fed
Enter output speed 40m/min.
(10) the red polytetrafluoroethylene film after sizing twisting splits winding filament on paper tube, and it is qualified as quotient to be examined
Product silk is sold.
5 samples are taken to be tested as follows in parallel:
2 product PTFE red membrane of embodiment splits continuous yarn product testing performance index result
Above-mentioned test is executed according to GB/T35748-2017 " vinyl fluoride long filament in poly- " standard.
Embodiment 3
The preparation process that polytetrafluoroethylene (PTFE) blue film splits long filament is as follows:
(1) select the cobalt blue natural blue pigment of Hunan Nuo Li new material Science and Technology Ltd. production for colored fibre coloring
Agent, the cobalt black pigment of purchase first carry out r for 24 hours and water are added to grind.Milling apparatus is by Yancheng City Heng Li grinding machinery Manufacturing Co., Ltd
Production.Pigment after grinding is filtered through 400 mesh and 1280 mesh twice metallic screens, desalination (removal ionizable metal salt), rear to dry.
Resistance to 380 DEG C of the colorant arrived or more high temperature, partial size are 25-50 μm.
(2) the F104 type polytetrafluoroethyldispersion dispersion resin (crystallinity of great Jin fluorination work (China) Co., Ltd production is selected
98%, average grain diameter is 200-300 μm), under conditions of being lower than 19 DEG C, is sieved with the strainer of 20 mesh, remove agglomerated particle.
(3) lubricant uses the aviation kerosine of China Aviation Oil Corporation's production.
It takes to pour into 20 ㎏ dispersion resins by pretreated 0.1 ㎏ cobalt blue dye fine powder and mix, delay after mixing
Slowly the aviation kerosine for pouring into 3 ㎏ is stirred, mixing time 1hr under the conditions of being lower than 19 DEG C with low-speed mixer (rpm 50).
Raw material carries out under conditions of being blended in lower than 19 DEG C, stirs 2hr, and mixed material is placed under the conditions of room temperature (25-30 DEG C)
20hr is cured.
(4) the prefabricated powder of above-mentioned maturation process is poured into and mixes the top that barrel is raised to preformer by elevator, will mixed
Material is poured slowly into preformer die cavity, and the material in barrel is most, in order to avoid color difference is formed between batches.The pressure of preformer is
5.5MPa, squeeze time 20min.Preformer die cavity covers extrusion lid, lies in a horizontal plane on pushing machine and is pushed.Pushing machine pressure
Power is 8.5MPa, 35 DEG C of chamber temperature of pushing material, 55 DEG C of die temperature of pushing, 20-25 DEG C of environment temperature, sink temperature 50 C, and mouth
Mold compression is than 130, draw ratio 40, and 35 ° of cone angle.Mixture forms the cylindrical mold base that diameter is 14.5mm after precompressed, pushing.
(5) cylindrical PTFE film base enters fishtail guide plate, and on calender, diameter is 150 ㎝, and width is 30 ㎝ pressure
Prolong and wide 16 ㎝, the calendered film of 0.25 ㎝ of thickness is made under roller effect.Calendering roller speed is 12m/min, the hot water temperature of stretcher roll
60 DEG C of degree rolls 70 DEG C of roll surface temperature.
(6) the calendering base band after rolling enters oil removal box, 310 DEG C of oil removal box temperature, feeds on wireline reel after unreeling
Entering with output speed is 30m/min, and the oil removing time 6 seconds, the base band after oil removing degreasing carried out base band hurried through supercooled water roller
It cools down, out the base band temperature near room temperature of cabinet, the calendering base band after oil removing is entirely on base band roller.
(7) base band roller unreels, and so that base band is entered baking oven and carries out heating stretching, base band feeding speed 4m/min, oven temperature
320 DEG C, output speed 18m/min, draw ratio is 4 times, after film bandwidth 4 ㎝, strip PTFE film band drawn by
It after cooling damping roller carries out cooling, then is wound up on film tape spool, the heat in the moist closet that room temperature is 40 DEG C of the film band after winding
Relaxation 1hr；
(8) base band disk is unreeled into cutting device, and cutter device is in tension state, and tension force is 120%；Cutting is adopted
With coaxial blade patterning method, the base band of 8cm wide is cut into flat filament 34 of 5mm wide, the wire velocity control of cutting is in 1.8m/
Min respectively enters baking oven by tape divider, carries out reheating stretching in addition to two Gen Biansi, and oven temperature is fed at 330 DEG C
Enter speed 2m/min, output speed 16m/min, the winding of blade thickness 0.15mm, two Gen Biansi below cutting device
On head, remaining 32 flat filament passes through heater box, after heated stretching respectively on subsequent wireline reel.
(9) flat filament stretched after cutting through heating is twisted again by thermal finalization, 20 ㎝ of heat set zone length, and temperature control exists
340 DEG C, setting time 1.2min, entering on twisting mill after sizing and twist finished silk, twisting orientation S is twisted, 450 twirls of the twist/m,
Feed output speed 40m/min.
(10) the blue polytetrafluoroethylene film after sizing twisting splits winding filament on paper tube, and it is qualified as quotient to be examined
Product silk is sold.
5 samples are taken to be tested as follows in parallel:
3 product PTFE blue film of embodiment splits continuous yarn product testing performance index result
Above-mentioned test is executed according to GB/T35748-2017 " vinyl fluoride long filament in poly- " standard.
Claims (10)
1. a kind of polytetrafluoroethylene (PTFE) Coloured film splits long filament, it is characterised in that with inorganic high-temperature resistant pigment fine powder and PTFE dispersion resin
For raw material, after being sufficiently mixed, then with lubricator stirring is reconciled, and is drawn through precompressed, pushing, calendering film forming, drying defatted, heating
It stretches, thermal finalization is twisted, winding finished product process is prepared.
2. polytetrafluoroethylene (PTFE) Coloured film according to claim 1 splits long filament, it is characterised in that inorganic high-temperature resistant pigment fine powder
Dosage weight ratio with PTFE dispersion resin is 0.3-1.0:100.
3. polytetrafluoroethylene (PTFE) Coloured film according to claim 1 splits long filament, it is characterised in that the inorganic high-temperature resistant face
Resistance to 380 DEG C of fine powder of material or more high temperature, partial size are 25-50 μm and pass through desalting processing.
4. polytetrafluoroethylene (PTFE) Coloured film according to claim 1 splits long filament, it is characterised in that the PTFE dispersion resin
It is to take crystallinity 98%, the PTFE resin powder that average grain diameter is 200-300 μm, under conditions of being lower than 19 DEG C, using 8-20
After mesh filter screen screening, the resin-oatmeal that agglomerated particle obtains is removed.
5. polytetrafluoroethylene (PTFE) Coloured film according to claim 1 splits long filament, it is characterised in that the lubricant and PTFE
The weight proportion of dispersion resin is 10-22:100.
6. polytetrafluoroethylene (PTFE) Coloured film according to claim 1 splits long filament, it is characterised in that the lubricant is paraffin
Oil, petroleum ether, white oil kerosene, aviation kerosine, preferably aviation kerosine.
7. polytetrafluoroethylene (PTFE) Coloured film according to claim 1 splits long filament, it is characterised in that the reconciliation of the lubricant
Condition are as follows: under the conditions of environment temperature is lower than 19 DEG C, stir 1-2hr, then carry out curing 5-24hr at 25-30 DEG C.
8. polytetrafluoroethylene (PTFE) Coloured film according to claim 1 splits long filament, it is characterised in that removed in the drying defatted
Oil temperature is 290-310 DEG C.
9. the preparation method that a kind of polytetrafluoroethylene (PTFE) Coloured film described in claim 1 splits long filament, it is characterised in that this method packet
It includes following steps: using inorganic high-temperature resistant pigment fine powder and PTFE dispersion resin as raw material, after being sufficiently mixed, then with lubricator stirring
Reconciliation is mixed, through precompressed, pushing, calendering film forming, drying defatted, heating stretch, thermal finalization is twisted, winding finished product process is prepared into
It arrives.
10. the preparation method that polytetrafluoroethylene (PTFE) Coloured film according to claim 9 splits long filament, it is characterised in that this method tool
Body the following steps are included:
(1) selection of pigment: taking resistance to 380 DEG C or more high temperature, and partial size is 25-50 μm and passes through desalting processing inorganic high-temperature resistant face
Expect fine powder；
(2) processing of dispersion resin: by crystallinity 98%, the PTFE dispersion resin that average grain diameter is 200-300 μm is being lower than
It under conditions of 19 DEG C, is sieved with 8-20 mesh filter screen, removes agglomerated particle；
(3) raw material mix: will handle obtained pigment, PTFE dispersion resin by step (1) and step (2), and be sufficiently stirred
After mixing, then with lubricator it is mixed；
PTFE dispersion resin, lubricant, pigment ratio be 100:10-22:0.3-1.0 ratio, with lubricator mixed
When, hybird environment temperature is lower than 19 DEG C, stirs 1-2hr, and maturation process 5-24hr is carried out under the conditions of 25-30 DEG C；
(4) precompressed, pushing: the prefabricated powder after curing pours into preformer and carries out precompressed, and preformer pressure is in 5.5-6MPa, precompressed
Time is 15-20min, and the mechanograph pressed in advance is placed on pushing machine and is pushed, and pushes the pressure 8-9MPa of machine, pushes away
30-35 DEG C of temperature of material chamber when pressure, 50-60 DEG C of die temperature of pushing, 20-25 DEG C of environment temperature, sink temperature 40-60
DEG C, mouth mold compression ratio is 130-150, draw ratio 40-45, cone angle 30-350；Through precompressed, after pushing, cylinder is made in mixture
Shape PTFE mold base；
(5) calendering film forming: cylindrical PTFE film base enters fishtail guide plate, and under the action of calender stack, pressure is made
Prolong film；
(6) drying defatted: lubricant in PTFE as-spun fibre is removed；Except 290-310 DEG C of oil temperature, the oil removing time 3-6 seconds；
(7) heating stretches for the first time: the base band after step (6) degreasing carries out heating stretching into drawing oven, is stretching temperature
310-330 DEG C is spent, is stretched under the conditions of feeding speed 3-6m/min, output speed 15-30m/min, strip PTFE film band warp
It after stretching after supercooling damping roller carries out cooling, then is wound up on film tape spool, the film band after winding is 40-50 in room temperature
DEG C moist closet in hot wire-CVD 1-2hr；
(8) cutting, second of heating stretch: first cutting the strip PTFE film band of forming winding, cutter device is in
Tension state, tension force is in 80-120%；Cutting uses coaxial blade patterning method, and blade thickness is 0.12-0.25 ㎜, point
It is cut into the flat filament of 5-30 ㎜, for the wire velocity control of cutting in 1.8-2.0m/min, the two Gen Biansi recycling for cutting both sides is sharp again
With；Then the flat filament after cutting enters second of heating of baking oven progress and stretches, and temperature control is in 330-350 DEG C, input speed
2-6m/min, 6-10 times of draw ratio, output speed 16-60m/min is wound after output；
(9) thermal finalization is twisted: the flat filament by second of heating stretching and winding is twisted again by thermal finalization, heat setting temperature control
Enter twisting mill twisting at 340-370 DEG C, setting time 0.5-1.2min, after sizing into finished silk, orientation is S twirl, is twisted
200-1200 twirl/m is spent, output speed 35-40m/min is fed；
(10) wind finished product: the finished silk after thermal finalization is twisted is wound up on paper tube in wireline reel.
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