CN109972226A - A kind of antistatic polytetrafluoroethylpiping fiber and preparation method thereof - Google Patents
A kind of antistatic polytetrafluoroethylpiping fiber and preparation method thereof Download PDFInfo
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- CN109972226A CN109972226A CN201910270033.0A CN201910270033A CN109972226A CN 109972226 A CN109972226 A CN 109972226A CN 201910270033 A CN201910270033 A CN 201910270033A CN 109972226 A CN109972226 A CN 109972226A
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- 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
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of 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
- B29C43/006—Pressing and sintering powders, granules or fibres
-
- 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
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- 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
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
-
- 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
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of antistatic polytetrafluoroethylpiping fiber, the raw material including following parts by weight is made: 100 parts of polytetrafluoroethyldispersion dispersion resin;10-30 parts of nanometer aluminium powder;The antistatic polytetrafluoroethylpiping fiber is arranged by antistatic surface.And preparation method thereof, in the fabrication process, it is mixed into metallic aluminium powder, the volume resistivity of polytetrafluoroethylene fibre has been greatly lowered, by 1018Ω * cm is reduced to 1010Ω*cm;Simultaneously, the wool top of combing is passed through into antistatic solution dip finishing, further subtract low-fiber sheet resistance, makes fiber in combing laid process, the charge for the generation that rubs between fiber and carding machine, between fiber can be dissipated timely and effectively, avoid generating electrostatic gather, fiber curling round the roll, the combing such as flyings it is difficult, combing is improved, and networking increases, and lapping is uniform, effective Nomex thickness, the grammes per square metre of lowering is irregular etc., improves Nomex appearance and service performance.
Description
Technical field
The present invention relates to chemical fibre fields more particularly to a kind of antistatic polytetrafluoroethylpiping fiber and preparation method thereof.
Background technique
Polytetrafluoroethylene (PTFE) molecule has helical conformation, and fine and close fluorine atom has fabulous protection to carbon chain backbone in molecule
Effect, make its invasion hardly by extraneous any reagent, have unrivaled chemical stability, corrosion resistance, it is non-stick,
Ageing-resistant and radiativity, lubricity and insulating properties etc., therefore, referred to as " King ".In recent years, polytetrafluoroethylene fibre material
On dust settling pocket using more and more extensive, especially high temperature kiln tail and waste incineration, but as textile fiber material, height
High electrostatic effect caused by insulation performance seriously increases textile process difficulty and requirement, limits polytetrafluoroethylene fibre
The use scope and dosage of material.
Polytetrafluoroethylfilament filament fiber and stainless steel fibre are twisted Split Down by patent CN2015102564018, with using Split Down
Base fabric is made in silk, then using the base fabric as the support frame of filtrate, so that Anti-static polytetrafluoroethylfilter filter bag be made.Patent
CN2017204118406 be static conductive metal film is lining on the inside of polytetrafluoroethylene (PTFE) filter bag ontology so that filter bag reach resist it is quiet
Electric effect.Above method can improve the electric conductivity of polytetrafluoroethylene (PTFE) filter bag to a certain extent, improve its service performance, but
It is that structure is complicated, it is inconvenient, it not can solve the problem in the fabrication processes such as combing lapping.Patent CN2010105120478 is mentioned
0.5%~1.5% nano-scale carbon fiber dust is mixed into polytetrafluoroethyldispersion dispersion resin out, by oiling, green compact, is squeezed
Item, calendering, sintering, drawing-off, cracking, combing, winding, curling, sizing, being chopped obtains chopped strand, has solved fiber and has produced
With the problem of electrostatic gathers in use process.This method dissipates performance in the charge that fiber itself can be improved, but due to stone
Black ratio is too low, and antistatic effect is not significant, and the electrostatic that not can solve in production process gathers problem.
Summary of the invention
It is good antistatic poly- the technical problem to be solved by the present invention is to prepare a kind of sheet resistance and volume resistivity
Tetrafluoroethylene fiber.
The present invention provides a kind of antistatic polytetrafluoroethylpiping fiber, and the raw material including following parts by weight is made:
100 parts of polytetrafluoroethyldispersion dispersion resin;
10-30 parts of nanometer aluminium powder;
Antistatic polytetrafluoroethylpiping fiber is arranged by antistatic surface.
The invention also discloses a kind of preparation methods of antistatic polytetrafluoroethylpiping fiber, comprising the following steps:
Polytetrafluoroethyldispersion dispersion resin is put into blender by step 1, and extrusion aid is added using sprayer, then starts
Blender, revolving speed are 10~15r/min, and the time is 30~40 minutes, keep extrusion aid and polytetrafluoroethyldispersion dispersion resin sufficiently mixed
It closes, the extrusion aid mass fraction is the 10%~25% of polytetrafluoroethyldispersion dispersion resin, obtains that the crowded polytetrafluoro of auxiliary agent is added
Ethylene dispersion resin;
Nanometer aluminium powder will be added in the crowded polytetrafluoroethyldispersion dispersion resin of the addition auxiliary agent in step 1, then in step 2
Start blender, revolving speed is 10~15r/min, and the time is 30~40 minutes, and nanometer aluminium powder is made to disperse and divide with polytetrafluoroethylene (PTFE)
Scattered resin is sufficiently mixed, and nanometer aluminium powder mass fraction is the 5%~30% of polytetrafluoroethyldispersion dispersion resin, obtains mixture;
Mixture in step 2 is stood plasticizing, raw material after being plasticized by step 3;
Raw material after plasticizing in step 3 is put into mold and is pressed into cylinder material base by step 4, the original after obtaining green compact
Material;
Raw material after green compact in step 4 is put into pushing machine and pushes extrusion, then will squeeze out material strip by step 5, presses
Prolong into thin base band, obtains calendering base band;
Calendering base band in step 5 is carried out degreasing, removes degreaser, then carries out drawing-off sintering, degreasing temperature by step 6
Degree is 100~190 DEG C, and speed is 3~6m/min;Drawing-off sintering temperature is 250~380 DEG C, and drafting multiple is 30~70 times, is obtained
Base band after to sintering processes;
Base band after sintering processes in step 6 is carried out film and split, and is combed into wool top with carding roller by step 7;
Step 8 immerses the wool top in step 7 in antistatic finish agent solution, and finishing fluid concentration is 1%~5%, leaching
The stain time is 1~3s, the wool top after being impregnated;
Wool top after dipping in step 8 is crimped, dries, and cuts off by step 9, and antistatic polytetrafluoro is made
Ethylene staple fiber.
Further, in step 3, plasticization temperature is 50~60 DEG C, and fusion time is 48~72h.
Further, in step 4, compacting pressure is 2~5MPa, and green compact speed is 10~20cm/min, green compact temperature
It is 30~40 DEG C.
Further, in step 5, the wide 10~12cm of base band, base band 0.09~0.12mm of thickness, bias pressure be 10~
20MPa, pushing temperature is 30~40 DEG C, and pushing speed is 1~2m/min;Rolling temperature is 50~60 DEG C, rolling velocity 10
~20m/min.
Further, in step 9, drying temperature is 50~60 DEG C, and drying time is 8~12h.
The invention has the following beneficial effects:
Due in the fabrication process, being mixed into metallic aluminium powder, drop the volume resistivity of polytetrafluoroethylene fibre significantly
It is low, by 1018Ω * cm is reduced to 1010Ω*cm;Meanwhile the wool top of combing is passed through into antistatic solution dip finishing, further subtract
Low-fiber sheet resistance makes fiber in combing laid process, the electricity for the generation that rubs between fiber and carding machine, between fiber
Lotus can timely and effectively dissipate, avoid generating electrostatic gather, fiber curling round the roll, the combing such as flyings it is difficult, combing is improved, at
Net increases, and lapping is uniform, and effective attenuating Nomex thickness, grammes per square metre are irregular etc., improves Nomex appearance and service performance.
Due to the fiber that antistatic agent surface dressing obtains, antistatic durability is poor, can effectively improve carding property,
Raising lapping quality, but when, over time, in subsequent use process, antistatic agent is gradually lost felt material, antistatic
Performance decline.And the addition of nanometer aluminium powder, so that antistatic property becomes polytetrafluoroethylene fibre, inherently performance, performance are steady
Fixed, durability is good.Due to, the addition of inventive point nanoparticle can increase difficulty to manufacturing, so, the present invention is in not shadow
It rings under polytetrafluoroethylene fibre production and behavior pattern itself, such as temperature tolerance, chemical corrosion resistance, the addition of maximum ratio are received
Rice aluminium powder, while surface dressing method is used, lower fiber specific resistance to the greatest extent, increases its charge dissipation ability.
Specific embodiment
The present invention is described in further detail below with reference to referring to data.It should be understood that embodiment is solely for the purpose of illustration
The present invention, rather than the range of invention is limited in any way.
Embodiment 1
A kind of antistatic polytetrafluoroethylpiping fiber, the raw material including following parts by weight are made:
100 parts of polytetrafluoroethyldispersion dispersion resin;
10-30 parts of nanometer aluminium powder;
The antistatic polytetrafluoroethylpiping fiber is arranged by antistatic surface.
A kind of preparation method of antistatic polytetrafluoroethylpiping fiber, includes the following steps:
Polytetrafluoroethyldispersion dispersion resin is put into blender by step 1, and extrusion aid is added using sprayer, then starts
Blender, revolving speed 10r/min, time are 30 minutes, are sufficiently mixed extrusion aid with polytetrafluoroethyldispersion dispersion resin, described to help
20% that agent mass fraction is polytetrafluoroethyldispersion dispersion resin is squeezed, obtains that the crowded polytetrafluoroethyldispersion dispersion resin of auxiliary agent is added;
Nanometer aluminium powder will be added in the crowded polytetrafluoroethyldispersion dispersion resin of the addition auxiliary agent in step 1, then in step 2
Start blender, revolving speed 12r/min, the time is 35 minutes, disperses nanometer aluminium powder and fills with polytetrafluoroethyldispersion dispersion resin
Divide mixing, nanometer aluminium powder mass fraction is the 30% of polytetrafluoroethyldispersion dispersion resin, obtains mixture;
Mixture in step 2 is stood plasticizing by step 3, and raw material after being plasticized, wherein plasticization temperature is 58 DEG C,
Fusion time is 50h;
Raw material after plasticizing in step 3 is put into mold and is pressed into cylinder material base by step 4, the original after obtaining green compact
Material, wherein compacting pressure is 3MPa, and green compact speed is 10cm/min, and green compact temperature is 32 DEG C;
Raw material after green compact in step 4 is put into pushing machine and pushes extrusion, then will squeeze out material strip by step 5, presses
Prolong into thin base band, obtains calendering base band;Wherein, the wide 10cm of base band, base band thickness 0.1mm, bias pressure 16MPa push temperature
It is 40 DEG C, pushing speed 2m/min;Rolling temperature is 55 DEG C, rolling velocity 12m/min.
Calendering base band in step 5 is carried out degreasing, removes degreaser, then carries out drawing-off sintering, degreasing temperature by step 6
Degree is 160 DEG C, speed 4m/min;Drawing-off sintering temperature is 380 DEG C, and drafting multiple is 60 times, the base after obtaining sintering processes
Band;
Base band after sintering processes in step 6 is carried out film and split, and is combed into wool top with carding roller by step 7;
Step 8 immerses the wool top in step 7 in antistatic finish agent solution, and finishing fluid concentration is 1%, when dipping
Between be 1s, the wool top after being impregnated;
Wool top after dipping in step 8 is crimped, dries, and cuts off by step 9, and antistatic polytetrafluoro is made
Ethylene staple fiber, wherein drying temperature is 50 DEG C, drying time 12h.
The volume resistivity that antistatic polytetrafluoroethylpiping fiber is made is 1010Ω * cm, sheet resistance 1011Ω*cm。
Embodiment 2
The preparation method is the same as that of Example 1, and the technological parameter of the present embodiment is as follows:
In step 1, the revolving speed of blender is 10r/min, and the time is 40 minutes, and extrusion aid mass fraction is polytetrafluoroethyl-ne
The 20% of alkene dispersion resin;
In step 2, the revolving speed of blender is 12r/min, and the time is 35 minutes, disperses nanometer aluminium powder and fills with resin
Divide mixing, the nanometer aluminium powder mass fraction is the 10% of polytetrafluoroethyldispersion dispersion resin;
In step 3, plasticization temperature is 58 DEG C, fusion time 50h;
In step 4, compacting pressure 3MPa, green compact speed is 10cm/min, and green compact temperature is 32 DEG C.
In step 5, the wide 10cm of base band, base band thickness 0.1mm, bias pressure 16MPa, pushing temperature is 40 DEG C, pushes speed
Degree is 2m/min;Rolling temperature is 55 DEG C, rolling velocity 12m/min.
In step 6, skimming temp is 160 DEG C, speed 4m/min;Drawing-off sintering temperature is 380 DEG C, and drafting multiple is
55 times.
In step 8, finishing fluid concentration is 1%, dip time 2s.
In step 9, drying temperature is 50 DEG C, drying time 12h.
The volume resistivity that antistatic polytetrafluoroethylpiping fiber is made is 1014Ω * cm, sheet resistance 1012Ω。
Embodiment 3
The preparation method is the same as that of Example 1, and the technological parameter of the present embodiment is as follows:
In step 1, the revolving speed of blender is 10r/min, and the time is 40 minutes, and extrusion aid mass fraction is polytetrafluoroethyl-ne
The 20% of alkene dispersion resin;
In step 2, the revolving speed of blender is 12r/min, and the time is 35 minutes, disperses nanometer aluminium powder and fills with resin
Divide mixing, the nanometer aluminium powder mass fraction is the 15% of polytetrafluoroethyldispersion dispersion resin;
In step 3, plasticization temperature is 58 DEG C, fusion time 50h;
In step 4, compacting pressure 3MPa, green compact speed is 10cm/min, and green compact temperature is 32 DEG C.
In step 5, the wide 10cm of base band, base band thickness 0.1mm, bias pressure 16MPa, pushing temperature is 40 DEG C, pushes speed
Degree is 2m/min;Rolling temperature is 55 DEG C, rolling velocity 12m/min.
In step 6, skimming temp is 160 DEG C, speed 4m/min;Drawing-off sintering temperature is 380 DEG C, and drafting multiple is
55 times.
In step 8, finishing fluid concentration is 3%, dip time 2s.
In step 9, drying temperature is 50 DEG C, drying time 12h.
The volume resistivity that antistatic polytetrafluoroethylpiping fiber is made is 1012Ω * cm, sheet resistance 1010Ω*cm。
Embodiment 4
The preparation method is the same as that of Example 1, and the technological parameter of the present embodiment is as follows:
In step 1, the revolving speed of blender is 10r/min, and the time is 40 minutes, and extrusion aid mass fraction is polytetrafluoroethyl-ne
The 20% of alkene dispersion resin;
In step 2, the revolving speed of blender is 12r/min, and the time is 35 minutes, disperses nanometer aluminium powder and fills with resin
Divide mixing, the nanometer aluminium powder mass fraction is the 10% of polytetrafluoroethyldispersion dispersion resin;
In step 3, plasticization temperature is 58 DEG C, fusion time 50h;
In step 4, compacting pressure 3MPa, green compact speed is 10cm/min, and green compact temperature is 32 DEG C.
In step 5, the wide 10cm of base band, base band thickness 0.1mm, bias pressure 16MPa, pushing temperature is 40 DEG C, pushes speed
Degree is 2m/min;Rolling temperature is 55 DEG C, rolling velocity 12m/min.
In step 6, skimming temp is 160 DEG C, speed 4m/min;Drawing-off sintering temperature is 380 DEG C, and drafting multiple is
55 times.
In step 8, finishing fluid concentration is 5%, dip time 3s.
In step 9, drying temperature is 50 DEG C, drying time 12h.
The volume resistivity that antistatic polytetrafluoroethylpiping fiber is made is 1013Ω * cm, sheet resistance 109Ω。
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (6)
1. a kind of antistatic polytetrafluoroethylpiping fiber, which is characterized in that the raw material including following parts by weight is made:
100 parts of polytetrafluoroethyldispersion dispersion resin;
10-30 parts of nanometer aluminium powder;
The antistatic polytetrafluoroethylpiping fiber is arranged by antistatic surface.
2. a kind of preparation method of antistatic polytetrafluoroethylpiping fiber as described in claim 1, which is characterized in that including following
Step:
Polytetrafluoroethyldispersion dispersion resin is put into blender by step 1, and extrusion aid is added using sprayer, then starts mixing
Device, revolving speed 10r/min, time are 30~40 minutes, are sufficiently mixed extrusion aid with polytetrafluoroethyldispersion dispersion resin, described to help
10%~25% that agent mass fraction is polytetrafluoroethyldispersion dispersion resin is squeezed, obtains that the crowded polytetrafluoroethylene (PTFE) dispersion tree of auxiliary agent is added
Rouge;
Step 2 will be added nanometer aluminium powder in the crowded polytetrafluoroethyldispersion dispersion resin of the addition auxiliary agent in step 1, then start
Blender, revolving speed are 10~15r/min, and the time is 30~40 minutes, and nanometer aluminium powder is made to disperse and disperse to set with polytetrafluoroethylene (PTFE)
Rouge is sufficiently mixed, and nanometer aluminium powder mass fraction is the 5%~30% of polytetrafluoroethyldispersion dispersion resin, obtains mixture;
Mixture in step 2 is stood plasticizing, raw material after being plasticized by step 3;
Raw material after plasticizing in step 3 is put into mold and is pressed into cylinder material base by step 4, the raw material after obtaining green compact;
Raw material after green compact in step 4 is put into pushing machine and pushes extrusion, then will squeeze out material strip, and be rolled by step 5
Thin base band obtains calendering base band;
Calendering base band in step 5 is carried out degreasing, removes degreaser, then carries out drawing-off sintering by step 6, and skimming temp is
100~190 DEG C, speed is 3~6m/min;Drawing-off sintering temperature is 250~380 DEG C, and drafting multiple is 30~70 times, is burnt
Knot treated base band;
Base band after sintering processes in step 6 is carried out film and split, and is combed into wool top with carding roller by step 7;
Step 8 immerses the wool top in step 7 in antistatic finish agent solution, and finishing fluid concentration is 1%~5%, when dipping
Between be 1~3s, the wool top after being impregnated;
Wool top after dipping in step 8 is crimped, dries, and cuts off by step 9, and antistatic polytetrafluoroethylpiping is made
Staple fiber.
3. preparation method as claimed in claim 2, which is characterized in that in step 3, plasticization temperature is 50~60 DEG C, plasticizing
Time is 48~72h.
4. preparation method as claimed in claim 2, which is characterized in that in step 4, compacting pressure is 2~5MPa, green compact
Speed is 10~20cm/min, and green compact temperature is 30~40 DEG C.
5. preparation method as claimed in claim 2, which is characterized in that in step 5, the wide 10~12cm of base band, base band thickness
0.09~0.12mm, bias pressure are 10~20MPa, and pushing temperature is 30~40 DEG C, and pushing speed is 1~2m/min;Calendering
Temperature is 50~60 DEG C, and rolling velocity is 10~20m/min.
6. preparation method as claimed in claim 2, which is characterized in that in step 9, drying temperature is 50~60 DEG C, drying
Time is 8~12h.
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CN105220259A (en) * | 2015-10-16 | 2016-01-06 | 同济大学 | A kind of polymer nanocomposite conductive fiber and preparation method thereof |
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CN110629303A (en) * | 2019-09-20 | 2019-12-31 | 常州华福环境科技股份有限公司 | Manufacturing process of high-strength low-elongation polytetrafluoroethylene ultra-fine filaments |
CN110629303B (en) * | 2019-09-20 | 2021-07-20 | 常州华福环境科技股份有限公司 | Manufacturing process of high-strength low-elongation polytetrafluoroethylene ultra-fine filaments |
CN111890587A (en) * | 2020-08-11 | 2020-11-06 | 常州万容新材料科技有限公司 | Method for manufacturing PTFE short fiber |
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