CN110499551A - It is a kind of to damage small carbon fiber terylene short fiber production technology - Google Patents
It is a kind of to damage small carbon fiber terylene short fiber production technology Download PDFInfo
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- CN110499551A CN110499551A CN201910783579.6A CN201910783579A CN110499551A CN 110499551 A CN110499551 A CN 110499551A CN 201910783579 A CN201910783579 A CN 201910783579A CN 110499551 A CN110499551 A CN 110499551A
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- carbon fiber
- precursor
- silk
- dry
- charing
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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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/10—Chemical after-treatment of artificial filaments or the like during manufacture of carbon
-
- 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
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
- D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/04—Carriers or supports for textile materials to be treated
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Fibers (AREA)
Abstract
Small carbon fiber terylene short fiber production technology is damaged the invention discloses a kind of, comprising the following steps: step a, is moved back a line concentration, is chosen precursor, connect Xin Si using heat resistance fiber with old silk after beam splitting, and be set up on line collecting plate；Step b, just dry, line collecting plate is sent into moisture dry in drying equipment, to contain in elimination precursor together with precursor；Step c, it pre-oxidizes, the precursor after drying is sent into pre-oxidation furnace together with precursor and is pre-oxidized, pre-oxidation furnace is continuously provided with 3；Step d, it carbonizes；Step e, it is surface-treated；Step f, starching；Step g, silk is received.Beneficial effect is: by using height-adjustable exhibition yarn equipment in sizing process, by adjusting the height of exhibition yarn fixing roller, the elasticity of exhibition yarn can be adjusted, to discharge the stress of carbon fiber, carbon fiber fluffing, damage and Twisting are prevented, to improve the quality of production of carbon fiber.
Description
Technical field
The present invention relates to carbon fiber production technical fields, and in particular to a kind of to damage small carbon fiber terylene short fiber production technology.
Background technique
Carbon fiber is the new material being fabricated to by organic precursors fiber by high-temperature decomposition.With high temperature resistant, anti-friction
It wipes, conductive, the thermally conductive and characteristics such as corrosion-resistant, shape can be processed into various fabrics in fibrous.Carbon fiber and graphite microstructure
There is very high intensity and modulus along fiber axle preferrel orientation, therefore along fiber axis direction, and autologous density is smaller, specific strength and ratio
Modulus is high.In the prior art, carbon fiber be commonly used for reinforcing material and resin, metal, ceramics and charcoal etc. carry out it is compound, be processed into
High-intensitive composite material, wherein the specific strength and specific modulus of carbon-fibre reinforced epoxy resin composite material are existing engineering materials
It is highest in material.Carbon fiber quality is more crisp, and during carbon fiber prepreg, carbon fiber can generate lousiness during playing silk, right
Product quality causes adverse effect；And in carbon fiber processing thermosetting polymer matrix composites, since solidification process is irreversible,
If carbon fiber existing defects (such as surface damage) in process, material can only be scrapped, cause production cost excessively high.
Summary of the invention
The object of the invention is that solve the above-mentioned problems and provide it is a kind of damage small carbon fiber terylene short fiber production technology, this
Preferred technical solution in many technical solutions provided is provided and includes the damage for reducing carbon fiber during playing silk, and is logical
Thermoplastic processing method is crossed, shaping efficiency, and the technical effects such as recoverable, elaboration as detailed below are improved.
To achieve the above object, the present invention provides following technical schemes:
It is provided by the invention a kind of to damage small carbon fiber terylene short fiber production technology, comprising the following steps:
Step a, a line concentration is moved back, precursor is chosen, connect Xin Si using heat resistance fiber with old silk after beam splitting, and be set up in line concentration
On plate；
Step b, just dry, line collecting plate is sent into moisture dry in drying equipment, to contain in elimination precursor together with precursor；
Step c, it pre-oxidizes, the precursor after drying is sent into pre-oxidation furnace together with precursor and is pre-oxidized, pre-oxidation furnace is continuous
It is provided with 3, and the temperature range of three pre-oxidation furnaces is respectively 200 DEG C -230 DEG C, 220 DEG C -250 DEG C, 235 DEG C -245 DEG C,
Precursor through pre-oxidizing is converted into trapezium structure by linear molecule chain, and preoxidation time 75-110min ultimately forms pre- oxygen
Silk；
Step d, it carbonizes, the oxidization fiber after pre-oxidation is successively subjected to low-temperature carbonization and high temperature carbonization, wherein in low-temperature carbonization furnace
If 5 temperature ranges, respectively 350 DEG C, 450 DEG C, 550 DEG C, 650 DEG C, 750 DEG C；6 temperature ranges are set in high temperature carbonization furnace,
Respectively 1050 DEG C, 1150 DEG C, 1250 DEG C, 1350 DEG C, 1450 DEG C, 1400 DEG C form random layer after charing, inside oxidization fiber
Graphite-structure, and deviate from small molecule, form the charing silk with certain drafting force；
Step e, be surface-treated, will charing silk as in ammonium hydrogen carbonate neutral electrolyte, using the voltage of 5-15V, 20-30A
Electric current is surface-treated, and cleaning is washed after surface treatment, and the electrolyte and other impurities in removal charing silk table face then dry
It is dry；
Step f, the dry cleansing generated in step e charing silk is immersed starching in sizing agent, is made every by starching using infusion process
Cortex is uniformly adhered in root charing silk table face, to complete starching, then middle temperature is dried, dipping process are used with height-adjustable
The exhibition yarn equipment for opening up yarn fixing roller carries out, and the charing silk after starching is required carbon fiber；
Step g, silk is received, the carbon fiber winding after collecting drying.
Preferably, just dry to use horizontal kiln, drying temperature is 80 DEG C -100 DEG C in the step b.
Preferably, three retorts are continuously arranged in the step c, and are interconnected, the precursor after drying is being conveyed
Successively carry out continuously carbonizings by three retorts under the conveying of equipment, the carbonization time in three retorts be respectively 30min,
30min and 40min, total 100min.
Preferably, being surface-treated in the step e using the electric current of the voltage of 10V, 25A.
Preferably, drying equipment is horizontal kiln in the step e, drying temperature is 100 DEG C.
Preferably, in the step f, exhibition yarn equipment include unreel structure, structure of entrying and exhibition knot structure, charing silk it is logical
Unreeling structure releasing is crossed, enters Zhan Sha mechanism via mechanism of entrying, described entry is equipped with admittedly between mechanism and the Zhan Sha mechanism
Surely yarn roller group is opened up, fixed exhibition yarn roller group is made of multiple exhibition yarn rollers, and adjacent exhibition yarn roller is located at different level in fixed exhibition yarn roller group
On face and vertical shift can be carried out, carbon fiber enters Zhan Sha mechanism via fixed exhibition the formed circuitous path of yarn roller group.
Preferably, the vertical drying furnace of drying equipment, drying temperature is 180 DEG C in the step g.
To sum up, the beneficial effects of the present invention are: it is logical by using height-adjustable exhibition yarn equipment in sizing process
The height of exhibition yarn fixing roller is overregulated, the elasticity of exhibition yarn can be adjusted, to discharge the stress of carbon fiber, prevent carbon fiber
Dimension fluffing, damage and Twisting, to improve the quality of production of carbon fiber.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Small carbon fiber terylene short fiber production technology is damaged the present invention provides a kind of, comprising the following steps:
Step a, a line concentration is moved back, precursor is chosen, connect Xin Si using heat resistance fiber with old silk after beam splitting, and be set up in line concentration
On plate；
Step b, just dry, line collecting plate is sent into moisture dry in drying equipment, to contain in elimination precursor together with precursor, so as to
It is preferably reacted after precursor enters pre-oxidation furnace；Just dry to use horizontal kiln, drying temperature is 80 DEG C -100 DEG C；
Step c, it pre-oxidizes, the precursor after drying is sent into pre-oxidation furnace together with precursor and is pre-oxidized, pre-oxidation furnace is continuous
It is provided with 3, and the temperature range of three pre-oxidation furnaces is respectively 200 DEG C -230 DEG C, 220 DEG C -250 DEG C, 235 DEG C -245 DEG C,
Precursor through pre-oxidizing is converted into trapezium structure by linear molecule chain, and preoxidation time 75-110min ultimately forms pre- oxygen
Silk, three retorts are continuously arranged, and are interconnected, and the precursor after drying successively passes through three charcoals under the conveying of conveying equipment
Change furnace and carry out continuously carbonizing, the carbonization time in three retorts is respectively 30min, 30min and 40min, total 100min, pre- oxygen
Change is the committed step of carbon fiber production, and precursor is converted into heat-resisting trapezoidal after pre-oxidizing structure by linear molecule chain
Structure can play solid oxygen carbon sequestration for later carbonization process, and a series of cyclisation, oxidation and dehydrogenation occur in the process
Deng reaction, the linear chain structure based on σ key original first forms a large amount of delocalizedπelectron, forms the conjugated structure to add lustre to.So that
Precursor is gradually deepened by pure white color: white → faint yellow → ecru → light brown → brown → black.PAN occurs during this
A large amount of small molecules are sloughed in chemical reaction, and recurring structure variation need to apply certain drafting force and guarantee that solution does not occur and takes for the structure of silk
To guaranteeing the intensity of oxidization fiber, at 240 DEG C or so, oxygen content is risen rapidly；In oxidation process, temperature is kept in burner hearth
Uniformly, and circulation air takes away the small molecule generated in reaction and impurity and reaction heat, to guarantee that oxidation can be continuous
It carries out, is continuously arranged using three pre-oxidation furnaces, precursor can continuously be pre-oxidized, save preoxidation time, improve carbon
The production efficiency of fiber；In pre-oxidation, pyrolysis and polycondensation reaction occur for oxidization fiber, can generate a large amount of exhaust gas and tar, answer
Guarantee production is discharged in time by exhaust outlet to stablize；
Step d, it carbonizes, the oxidization fiber after pre-oxidation is successively subjected to low-temperature carbonization and high temperature carbonization, be required to isolation air,
5 temperature ranges, respectively 350 DEG C, 450 DEG C, 550 DEG C, 650 DEG C, 750 DEG C are set in middle low-temperature carbonization furnace；In high temperature carbonization furnace
If 6 temperature ranges, respectively 1050 DEG C, 1150 DEG C, 1250 DEG C, 1350 DEG C, 1450 DEG C, 1400 DEG C, after charing, pre- oxygen
Silk is internal to form random graphits structure, and deviates from small molecule, forms the charing silk with certain drafting force；
Step e, it is surface-treated, by charing silk as in ammonium hydrogen carbonate neutral electrolyte, using anode electrode oxidizing process, uses pulse
The method of energization is surface-treated so that carbon fiber surface occur etching and production oxygen-containing functional group, using the voltage of 10V,
The electric current of 25A is surface-treated, and cleaning is washed after surface treatment, and washing temperature is 50 DEG C, to remove the electricity in charing silk table face
Liquid and other impurities are solved, are then dried, drying equipment is horizontal kiln, and drying temperature is 100 DEG C, is preferably connect to be formed
Surface is touched, in order to preferably be used for the production of composite material；
Step f, the dry cleansing generated in step e charing silk is immersed starching in sizing agent, is made every by starching using infusion process
Cortex is uniformly adhered in root charing silk table face, to complete starching, then middle temperature is dried, dipping process are used with height-adjustable
The exhibition yarn equipment for opening up yarn fixing roller carries out, exhibition yarn equipment include unreel structure, structure of entrying and exhibition knot structure, charing silk is by putting
It rolls up mechanism to release, enters Zhan Sha mechanism via mechanism of entrying, described entry is equipped with fixed exhibition between mechanism and the Zhan Sha mechanism
Yarn roller group, fixed exhibition yarn roller group are made of multiple exhibition yarn rollers, and adjacent exhibition yarn roller is located on different horizontal plane in fixed exhibition yarn roller group
And vertical shift can be carried out, carbon fiber enters Zhan Sha mechanism via fixed exhibition the formed circuitous path of yarn roller group, solid by adjusting
Surely the relative position for opening up adjacent exhibition yarn roller in yarn roller group, can be adjusted the tension of carbon fiber, by adjacent exhibition yarn rod position
Adjust it is close after, can quantity of margin open up the carbon fiber between yarn rod, generated in above-mentioned procedure of processing inside carbon fiber to discharge
Stress, the charing silk after starching are required carbon fiber；The surface nature of carbon fiber can be changed in starching, is formed on the surface of carbon filament
One layer of epithelium, improves the convergence and wearability of carbon filament, and reduces the fluffiness in deep-processing process, and the suction of carbon fiber
Aqueous to become smaller, fibrillation expanding is easy, and stability is more preferable, and can improve the contact surface properties in composite material, improves material
Intensity；
Step g, silk is received, the carbon fiber winding after collecting drying, the vertical drying furnace of drying equipment, drying temperature is 180 DEG C.
It, can by adjusting the height of exhibition yarn fixing roller by using height-adjustable exhibition yarn equipment in sizing process
The elasticity of exhibition yarn is adjusted, to discharge the stress of carbon fiber, carbon fiber fluffing, damage and Twisting are prevented, to mention
The quality of production of high carbon fiber.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of damage small carbon fiber terylene short fiber production technology, which comprises the following steps:
Step a, a line concentration is moved back, precursor is chosen, connect Xin Si using heat resistance fiber with old silk after beam splitting, and be set up in line concentration
On plate；
Step b, just dry, line collecting plate is sent into moisture dry in drying equipment, to contain in elimination precursor together with precursor；
Step c, it pre-oxidizes, the precursor after drying is sent into pre-oxidation furnace together with precursor and is pre-oxidized, pre-oxidation furnace is continuous
It is provided with 3, and the temperature range of three pre-oxidation furnaces is respectively 200 DEG C -230 DEG C, 220 DEG C -250 DEG C, 235 DEG C -245 DEG C,
Precursor through pre-oxidizing is converted into trapezium structure by linear molecule chain, and preoxidation time 75-110min ultimately forms pre- oxygen
Silk；
Step d, it carbonizes, the oxidization fiber after pre-oxidation is successively subjected to low-temperature carbonization and high temperature carbonization, wherein in low-temperature carbonization furnace
If 5 temperature ranges, respectively 350 DEG C, 450 DEG C, 550 DEG C, 650 DEG C, 750 DEG C；6 temperature ranges are set in high temperature carbonization furnace,
Respectively 1050 DEG C, 1150 DEG C, 1250 DEG C, 1350 DEG C, 1450 DEG C, 1400 DEG C form random layer after charing, inside oxidization fiber
Graphite-structure, and deviate from small molecule, form the charing silk with certain drafting force；
Step e, be surface-treated, will charing silk as in ammonium hydrogen carbonate neutral electrolyte, using the voltage of 5-15V, 20-30A
Electric current is surface-treated, and cleaning is washed after surface treatment, and the electrolyte and other impurities in removal charing silk table face then dry
It is dry；
Step f, the dry cleansing generated in step e charing silk is immersed starching in sizing agent, is made every by starching using infusion process
Cortex is uniformly adhered in root charing silk table face, to complete starching, then middle temperature is dried, dipping process are used with height-adjustable
The exhibition yarn equipment for opening up yarn fixing roller carries out, and the charing silk after starching is required carbon fiber；
Step g, silk is received, the carbon fiber winding after collecting drying.
2. a kind of according to claim 1 damage small carbon fiber terylene short fiber production technology, it is characterised in that: just dry in the step b
Dry to use horizontal kiln, drying temperature is 80 DEG C -100 DEG C.
3. a kind of according to claim 1 damage small carbon fiber terylene short fiber production technology, it is characterised in that: in the step c, three
Retort is continuously arranged, and is interconnected, it is dry after precursor under the conveying of conveying equipment successively by three retorts into
Row continuously carbonizing, the carbonization time in three retorts is respectively 30min, 30min and 40min, total 100min.
4. a kind of according to claim 1 damage small carbon fiber terylene short fiber production technology, it is characterised in that: in the step e, use
The voltage of 10V, the electric current of 25A are surface-treated.
5. a kind of according to claim 1 damage small carbon fiber terylene short fiber production technology, it is characterised in that: dry in the step e
Equipment is horizontal kiln, and drying temperature is 100 DEG C.
6. a kind of according to claim 1 damage small carbon fiber terylene short fiber production technology, it is characterised in that: in the step f, open up yarn
Equipment include unreel structure, structure of entrying and exhibition knot structure, charing silk by unreeling structure releasing, enter exhibition via mechanism of entrying
Yarn mechanism, described entry are equipped with fixed exhibition yarn roller group between mechanism and the Zhan Sha mechanism, fixed exhibition yarn roller group is by multiple exhibition yarns
Roller is constituted, and adjacent exhibition yarn roller is located on different horizontal plane and can carry out vertical shift in fixed exhibition yarn roller group, and carbon fiber is via solid
Surely exhibition the formed circuitous path of yarn roller group enters Zhan Sha mechanism.
7. a kind of according to claim 1 damage small carbon fiber terylene short fiber production technology, it is characterised in that: dry in the step g
The vertical drying furnace of equipment, drying temperature are 180 DEG C.
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Cited By (6)
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| CN111636143A (en) * | 2020-05-28 | 2020-09-08 | 山东奥达复合材料有限公司 | Three-dimensional felt of carbon fiber |
| CN111926415A (en) * | 2020-08-18 | 2020-11-13 | 常州市宏发纵横新材料科技股份有限公司 | Carbon fiber production process capable of eliminating static electricity |
| CN113639541A (en) * | 2021-08-23 | 2021-11-12 | 张玉成 | Drying method for carbon fiber material production |
| CN113862891A (en) * | 2021-08-27 | 2021-12-31 | 常熟市宏芳针织服饰有限公司 | Production weaving method for producing high-temperature-resistant fiber cloth |
| CN114086336A (en) * | 2021-10-29 | 2022-02-25 | 江苏航宇复合材料科技有限公司 | Tensity-adjustable high-strength carbon fiber production sizing equipment |
| CN114855307A (en) * | 2022-05-25 | 2022-08-05 | 昆山盛夏复合材料科技有限公司 | Carbon fiber composite material and preparation method thereof |
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| CN113862891A (en) * | 2021-08-27 | 2021-12-31 | 常熟市宏芳针织服饰有限公司 | Production weaving method for producing high-temperature-resistant fiber cloth |
| CN114086336A (en) * | 2021-10-29 | 2022-02-25 | 江苏航宇复合材料科技有限公司 | Tensity-adjustable high-strength carbon fiber production sizing equipment |
| CN114855307A (en) * | 2022-05-25 | 2022-08-05 | 昆山盛夏复合材料科技有限公司 | Carbon fiber composite material and preparation method thereof |
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