CN113668076A - Method for manufacturing cord fabric by utilizing bio-based chinlon 56 - Google Patents
Method for manufacturing cord fabric by utilizing bio-based chinlon 56 Download PDFInfo
- Publication number
- CN113668076A CN113668076A CN202110929685.8A CN202110929685A CN113668076A CN 113668076 A CN113668076 A CN 113668076A CN 202110929685 A CN202110929685 A CN 202110929685A CN 113668076 A CN113668076 A CN 113668076A
- Authority
- CN
- China
- Prior art keywords
- bio
- cord fabric
- temperature
- chinlon
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- 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
- D01D5/08—Melt spinning methods
-
- 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
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- 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
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/90—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
- D02G3/28—Doubled, plied, or cabled threads
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention belongs to the technical field of cord fabric manufacturing, and particularly relates to a method for manufacturing cord fabric by utilizing bio-based chinlon 56, which comprises the following steps: 1) thickening the basic slices of the bio-based chinlon 56 to obtain thickened slices, wherein the viscosity value of the thickened slices is 70-120; 2) melting the tackifying slice, spinning, and cooling the tow step by step; 3) oiling, drafting, shaping and coiling the tows to obtain nylon 56 industrial yarns; 4) twisting, weaving, dipping and shaping the nylon 56 industrial yarn to obtain the nylon 56 cord fabric. Considering that the bio-based chinlon 56 industrial yarn has low crystallization capacity, the low crystallization capacity can reduce the strength and modulus of the industrial yarn, so that the spinning drafting is difficult, and the physical properties of a finished product are inferior to those of the traditional chinlon 66 industrial yarn, the method improves the drawability of the material and improves the strength and modulus of the industrial yarn by thickening the basic slices of the bio-based chinlon 56 to 70-120.
Description
Technical Field
The invention belongs to the technical field of cord fabric manufacturing, and particularly relates to a method for manufacturing cord fabric by utilizing bio-based chinlon 56.
Background
The nylon 66 fiber has the characteristics of high strength, good toughness, good fatigue resistance and the like, is widely applied to various industrial purposes, and for the gum dipping tire cord fabric, the nylon 66 is commonly used for manufacturing a bias tire carcass and a radial tire cap belt layer. However, the traditional chinlon 66 raw material is from petrochemical raw materials (petroleum), belongs to non-renewable resources, and has high energy consumption, high carbon emission and large burden on environmental protection in the production process. Therefore, the trend of future development is to search for an environment-friendly renewable material capable of replacing N66 to manufacture the cord fabric.
The chinlon 56 is synthesized by two monomers of pentanediamine and adipic acid and is a renewable bio-based material, and if the industrial yarn is manufactured by using the chinlon 56 from a bio-based source, the environmental load can be greatly reduced, and the carbon emission can be effectively reduced. However, because the crystallization capacity of the nylon 56 industrial yarn is low, the spinning drafting is difficult, the physical properties of a finished product are inferior to those of the traditional nylon 66 industrial yarn, and the production efficiency is poor; in addition, the chinlon 56 is easily influenced by the moisture content in the spinning process, so that the spinning condition and the physical property are poor, and the excellent tire cord fabric cannot be manufactured.
Disclosure of Invention
Therefore, the main technical problem to be solved by the invention is the defect that the spinning drafting is difficult due to low crystallization capacity of the existing nylon 56 industrial yarn, and the crystallinity is improved and the spinnability is improved by increasing the viscosity value of nylon 56 chips to 70-120.
The invention aims to solve another technical problem that the industrial yarn of the chinlon 56 is influenced by the water content, so that the industrial yarn is easy to degrade at high temperature and is not easy to prepare high-strength fibers, and the water content of the chinlon 56 slices is controlled to be 150-800 ppm, so that the high-temperature degradation during spinning is avoided, the spinnability is improved, and the strength of the industrial yarn is further improved.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides a method for manufacturing cord fabric by utilizing bio-based chinlon 56, which comprises the following steps:
1) thickening the basic slices of the bio-based chinlon 56 to obtain thickened slices, wherein the viscosity value of the thickened slices is 70-120;
2) melting the tackifying slice in the step 1), spinning, and cooling the tow step by step;
3) oiling, drafting, shaping and coiling the tows cooled step by step in the step 2) to obtain nylon 56 industrial yarns;
4) twisting, weaving, dipping and shaping the nylon 56 industrial yarn in the step 3) to obtain the nylon 56 cord fabric.
Preferably, in the method for manufacturing the cord fabric by using the bio-based chinlon 56, in the step 2), before the viscosity-increasing slices are melted, the water content of the viscosity-increasing slices is adjusted to be 150-800 ppm.
More preferably, in the method for manufacturing the cord fabric by using the bio-based chinlon 56, in the step 2), a heat-resistant agent of copper particles is added when the tackifying slices are melted, and the content of the copper particles is 50-130 ppm.
Further preferably, in the method for manufacturing the cord fabric by using the bio-based chinlon 56, in the step 2), the tackifying slices are melt-extruded by a screw extruder;
the C4 temperature of the screw extruder is 265-305 ℃, preferably 275-300 ℃; the temperature of C5 is 265-300 ℃, and the preferable temperature is 280-300 ℃; the head pressure is 9-15 MPa.
Further preferably, in the method for manufacturing cord fabric by using bio-based chinlon 56, in the step 2), the step-by-step cooling process comprises sequentially carrying out post-heating and cooling air cooling on the tows;
wherein the post-heating temperature is 220-340 ℃, preferably 240-320 ℃;
the temperature of the cooling air is 13-25 ℃, and preferably 15-20 ℃; the humidity is 50-90%, preferably 65-85%; the speed is 0.4 to 0.9m/s, preferably 0.5 to 0.9 m/s.
Further preferably, in the method for manufacturing cord fabric by using bio-based chinlon 56, in step 3), during the drafting process: the speed of the first hot roller group is 350-650 m/min, the temperature is 25-80 ℃, and the preferred temperature is 30-70 ℃; the speed of the second hot roller group is 360-650 m/min, the temperature is 25-80 ℃, and the preferred temperature is 30-70 ℃; the speed of the third hot roller group is 1000-1600 m/min, the temperature is 100-200 ℃, and the optimal temperature is 125-190 ℃;
in the shaping process: the speed of the fourth hot roller group is 2400-3000 m/min, the temperature is 170-250 ℃, and the preferable temperature is 180-245 ℃; the speed of the fifth hot roller group is 2400-3000 m/min, the temperature is 160-250 ℃, and 170-240 ℃ is preferred; the speed of the sixth hot roller group is 2400-3000 m/min, the temperature is 30-220 ℃, and the optimal temperature is 30-180 ℃.
More preferably, in the method for manufacturing the cord fabric by using the bio-based chinlon 56, in the step 3), the winding speed is 2300 to 2900m/s in the winding process.
Further preferably, in the method for manufacturing the cord fabric by using the bio-based chinlon 56, in the step 4), the yarn twisting step: carrying out primary twisting and secondary twisting on the industrial yarn by using a direct twisting machine or a two-for-one twisting machine to prepare double-strand twisted yarn;
weaving: arranging the twisted yarns on a creel, controlling the tension between the twisted yarns to be uniform through a rolling bearing and a belt, and weaving the twisted yarns into grey cloth with a preset width;
a gum dipping procedure: and performing gum dipping treatment on the gray cloth.
The technical scheme of the invention has the following advantages:
1. the invention provides a method for manufacturing cord fabric by utilizing bio-based chinlon 56, which comprises the following steps: 1) thickening the basic slices of the bio-based chinlon 56 to obtain thickened slices, wherein the viscosity value of the thickened slices is 70-120; 2) melting the tackifying slice, spinning, and cooling the tow step by step; 3) oiling, drafting, shaping and coiling the tows to obtain nylon 56 industrial yarns; 4) twisting, weaving, dipping and shaping the nylon 56 industrial yarn to obtain the nylon 56 cord fabric.
According to the method for manufacturing the cord fabric by utilizing the bio-based chinlon 56, the bio-based chinlon 56 is a renewable bio-based material, and the industrial yarn manufactured by utilizing the bio-based chinlon 56 can greatly reduce the environmental load and effectively reduce the carbon emission.
Considering that the bio-based chinlon 56 industrial yarn has low crystallization capacity, the low crystallization capacity can reduce the strength and modulus of the industrial yarn, so that the spinning drafting is difficult, and the physical properties of a finished product are inferior to those of the traditional chinlon 66 industrial yarn, the method improves the drawability of the material and improves the strength and modulus of the industrial yarn by thickening the basic slices of the bio-based chinlon 56 to 70-120.
2. According to the method for manufacturing the cord fabric by using the bio-based chinlon 56, the water content of the adhesion-promoting slices is adjusted to 150-800 ppm before the adhesion-promoting slices are melted, so that on one hand, degradation can be avoided during high-temperature melting, and the strength of industrial yarns is greatly improved; on the other hand, the combination with the viscosity in a specific range enables the bio-based chinlon 56 molecules to be arranged in sequence in the crystallization process, and the strength of the industrial yarn is improved together.
3. According to the method for manufacturing the cord fabric by utilizing the bio-based 56, the copper ion heat-resistant agent is added when the tackifying slice is melted, so that the strength and the heat resistance of the industrial yarn can be improved.
4. According to the method for manufacturing the cord fabric by utilizing the bio-based 56, provided by the invention, the modulus is improved by optimizing the processes of yarn twisting, weaving and gum dipping, the strong stretching property of the bio-based nylon 56 is fully exerted, and the same physical property level of the nylon 66 cord fabric can be achieved.
Drawings
FIG. 1 is a schematic diagram of the energy consumption (nylon 56) in diamine production as a raw material.
Detailed Description
In order to facilitate understanding of the objects, technical solutions and gist of the present invention, embodiments of the present invention will be described in further detail below. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, this embodiment is provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims.
The embodiment provides a method for manufacturing cord fabric by utilizing bio-based chinlon 56, which comprises the following steps:
step S1, tackifying process
The SSP is a process of placing a basic slice in a high-temperature high-vacuum reactor to perform a polymerization reaction to increase molecular chains and increase molecular viscosity.
The basic slice adopts the bio-based chinlon 56, the bio-based chinlon 56 is a novel bio-based polymer product, and the invention adopts the chinlon 56 from a bio-based source to manufacture the industrial yarn, so that the environmental load can be greatly reduced, and the carbon emission can be effectively reduced. The inventor finds that the nylon 56 industrial yarn has low crystallization capacity, so that spinning drafting is difficult, the physical properties of a finished product are inferior to those of the traditional nylon 66, and the production efficiency is poor; in addition, the chinlon 56 is easily influenced by the moisture content in the spinning process, so that the spinning condition and the physical property are poor, and the excellent tire cord fabric cannot be manufactured. Based on the above, no report on the manufacture of the cord fabric by using the bio-based chinlon 56 exists at present.
The inventor finds that in the process of manufacturing the cord fabric by using the bio-based chinlon 56, the viscosity (RV) of the basic slice of the bio-based chinlon 56 influences the crystallization capacity of the industrial yarn, the water content is closely related to the degradation degree of the industrial yarn, and the crystallization capacity and the degradation degree of the industrial yarn influence the excellent rate and the physical performance of a finished product.
Generally, the viscosity (RV) range of the basic slice of the bio-based chinlon 56 is 39-50, the crystallization capacity of the bio-based chinlon 56 during crystallization can be improved through a tackifying process, the drawability of the bio-based chinlon 56 material is further improved, the application of high spinning speed and high draw ratio in the spinning process is possible, the occurrence frequency of broken filaments and broken filaments is reduced, and the strength and the modulus of industrial filaments are improved.
Specifically, a solid-phase polymerization method is adopted, low-viscosity basic slices are pre-crystallized for 0.5-4 hours at the temperature of 80-160 ℃, then the low-viscosity basic slices enter a tackifying reactor with the wall surface temperature of 130-175 ℃ to react for 8-20 hours, the whole system operates in a nitrogen environment, the oxygen content of nitrogen is controlled to be 3-25 ppm, the dew point is less than 30 ℃, the viscosity (RV) of the low-viscosity basic slices is increased to 70-120, and the tackifying slices are obtained.
And (3) humidifying the viscosity-increasing slices by using hot nitrogen at the temperature of 80-120 ℃ for 16-20 hours, and adjusting the water content of the viscosity-increasing slices to 150-800 ppm, preferably 250-450 ppm.
Step S2. extrusion procedure
Melting and extruding the tackifying slice obtained in the step S1 through a screw extruder to obtain a melt; and adding a copper ion heat-conducting agent into the melt, wherein the content of copper particles is 50-130 ppm, preferably 70-115 ppm, and the strength and heat resistance of the bio-based nylon 56 can be further improved.
The screw extruder has the temperature of C4 of 280-300 ℃, the temperature of C5 of 280-300 ℃ and the head pressure of 9-15 MPa.
Wherein C4 represents extruder zone 4 temperature; c5 denotes extruder zone 5 temperature.
Step S3. spinning process
The extruded chips obtained in step S2 were spun through a spinning box, and the tow was gradually cooled.
After the spinning box, a rear heater and a cooling air generator are sequentially arranged, and the filament bundles are sequentially heated and cooled by cooling air: the post-heating temperature is 220-340 ℃, and then the tows are cooled in an outside-in blowing mode, wherein the temperature of cooling air is 13-25 ℃, and is preferably 15-20 ℃; the humidity is 50-90%, preferably 65-80%; the speed is 0.4 to 0.9m/s, preferably 0.5 to 0.9 m/s.
After spinning, the strand is cooled in stages in order to solidify the strand in the molten state. Too fast cooling of the filament bundle leads to difficult drafting and poor spinning condition; if the tow is cooled too slowly, the tow may be sticky and have low physical properties. Based on this, after melt spinning, the yarn is heated and cooled by cooling air in turn, and the two are mutually matched to realize cooling step by step, so that the spun yarn cannot be sticky and the subsequent drafting is facilitated.
Step S4, oiling process
And (4) oiling the cooled tows in the step (S3), wherein the oiling agent is crude oil, and the oiling rate is 0.8-2.2 wt%. Oiling is to increase cohesion between tows, reduce friction and static electricity, so that subsequent drafting processes can be smoothly carried out, and broken filaments are reduced.
Step S5, a drafting process
The oiled tow is drawn by 3 zone hot rollers to achieve the desired strength, elongation, modulus, heat shrinkage, etc. properties. Wherein the speed of the first hot roller group (GR1) is 350-650 m/min, the temperature is 25-80 ℃, and preferably 30-70 ℃; the speed of the second hot roller group (GR2) is 360-650 m/min, the temperature is 35-80 ℃, and preferably 30-70 ℃; the speed of the third hot roller group (GR3) is 1000-1600 m/min, the temperature is 100-200 ℃, and the optimal temperature is 125-190 ℃.
In the drafting process, the drafting ratio is 4.7-5.7.
S6, shaping process
The drafted tows need to be shaped on a shaping hot roller at high temperature, so that the tows can be completely crystallized, the microstructure tends to be stable, the strength and the modulus are stabilized, the heat shrinkage rate is reduced, and good conditions are provided for subsequent reeling and forming.
Specifically, the tow was set by 3 sets of hot rollers: the speed of the fourth hot roller group (GR4) is 2000-3000 m/min, the temperature is 170-250 ℃, the preferred speed is 2400-3000 m/min, and the temperature is 180-245 ℃; the speed of the fifth hot roller group (GR5) is 2400-3000 m/min, the temperature is 160-250 ℃, and preferably 170-240 ℃; the speed of the sixth hot roller group (GR6) is 2400-2900 m/min, the temperature is 30-200 ℃, and the optimal temperature is 30-180 ℃.
The setting shrinkage ratio is 3-10%.
Step S7. coiling process
And (4) coiling and forming the shaped filament bundle at a high coiling speed of 2300-2900 m/min to obtain the high-modulus low-shrinkage industrial filament.
S8, twisting yarn, weaving, dipping and shaping
A yarn twisting process: carrying out primary twisting and secondary twisting on the industrial yarn by using a direct twisting machine or a two-for-one twisting machine to prepare double-strand twisted yarn;
weaving: arranging the twisted yarns on a creel, controlling the tension between the twisted yarns to be uniform through a rolling bearing and a belt, enabling the twisted yarns to pass through a reed customized according to specifications during weaving, weaving the twisted yarns by adopting an air jet loom, weaving the twisted yarns into grey cloth with preset width, and adopting cotton yarns or elastic yarns as weft yarns;
a gum dipping procedure: the method is characterized in that the gray cloth is subjected to gum dipping treatment to enable the cord cloth to achieve ideal physical properties and have the capability of bonding with rubber, and a single-bath gum dipping method or a double-bath gum dipping method can be adopted: when a single-bath impregnation method is adopted, the RFL resin is impregnated in a first bath, and the cord fabric is sequentially impregnated through an oven, a tension area and a glue tank during impregnation; when the double-bath impregnation method is adopted, the Epoxy and MDI solution is used for impregnating the activated fiber in the first bath, the RFL resin is used for impregnating the activated fiber in the second bath, and the cord fabric is sequentially treated by an oven, a tension area and a glue tank for impregnation. In the dipping process, the cord fabric is subjected to thermal extension and retraction deformation, and the total elongation is 0-4%.
The process parameters of different embodiments for manufacturing the industrial yarn by utilizing the bio-based chinlon 56 are as follows:
comparative example 1
The comparative example provides a cord fabric manufactured by the method by using chinlon 66 as a raw material, and the carbon emission is shown in figure 1.
In the energy consumption ratio of diamine raw material production of nylon, the energy consumption of the pentanediamine (fermentation) production is about 75 percent higher than that of the hexanediamine (chemical synthesis), and the carbon emission is about 12kg x kg higher-1Nylon 56 has proven to be more environmentally friendly than nylon 66.
Comparative example 2
This comparative example provides a method for manufacturing a cord fabric using bio-based chinlon 56, which differs from example 1 in that the base slice has a slice tack value (RV) of 60 after tacking.
Comparative example 3
This comparative example provides a method for producing a cord fabric using bio-based nylon 56, which is different from example 1 in that the water content of the tackified pellets is 100 ppm.
Comparative example 4
This comparative example provides a method for manufacturing a cord fabric using bio-based nylon 56, different from example 1 in that the copper particle content is selected from 42.5 ppm.
Test example 1
1. Comparison of carbon emissions
As shown in FIG. 1, compared with the cord fabric made of nylon 66, the carbon emission can be reduced to 1/4 by using the bio-based nylon 56.
2. Effect of manufacturing Process on product Industrial yarn Performance
The industrial yarns manufactured in examples 1 to 6 and comparative examples 1 to 4 were tested for intercrystalline ability, strength, elongation, and heat shrinkage.
In the above table, the strength and elongation tests are according to ASTM D885 standard: an Instron 5564 tester, C-clamp 2714-. And (3) testing conditions are as follows: the gauge length is 250mm, the stretching speed is 300mm/min, the pre-tension is 0.05gf/den, and the air pressure is 0.4-0.6 MPa. Sample equilibration conditions before testing: 24 +/-2 ℃ and relative humidity of 55 +/-5 percent, and balancing for 24 hours.
Shrinkage test standard was according to ASTM D885 with the following test conditions: at 177 ℃, the load was 0.05g/d and the equilibration time was 10 minutes.
The test data shows that the physical properties such as strength, elongation and the like of the industrial yarn produced by the tackifying, spinning, cooling and drafting process can reach the level of the traditional industrial yarn, can meet the requirements of various downstream applications (such as tire cord fabrics) and has high production efficiency.
Compared with the comparative example 2, the invention controls the viscosity value (RV) of the slices to be 70-120 in the tackifying process, and can effectively improve the length of the molecular chain; compared with the comparative example 3, the moisture content of the tackifying slice is selected from 150-850 ppm in the tackifying process, so that on one hand, the tackifying slice can be prevented from being degraded in high-temperature melting, and the strength of the industrial yarn is greatly improved; on the other hand, the combination with the viscosity in a specific range enables the bio-based chinlon 56 molecules to be arranged in sequence in the crystallization process, and the strength of the industrial yarn is improved together.
The strength and heat resistance of the industrial yarn can be improved by adding copper ions as compared with comparative example 4.
3. Performance of cord fabric
The industrial yarns manufactured in examples 1 to 6 and comparative examples 1 to 4 were subjected to procedures of double-strand twisting, weaving, dipping and the like to obtain a dipped cord fabric, and tests such as strength, elongation at break, constant-load elongation, heat shrinkage, GD fatigue resistance retention rate and the like were performed.
The industrial yarn processing and production of the dipped cord fabric comprises the working procedures of yarn twisting, weaving, dipping and the like:
a yarn twisting process: carrying out primary twisting and secondary twisting on the industrial yarn by using a direct twisting machine or a two-for-one twisting machine to prepare double-strand twisted yarn;
weaving: arranging the twisted yarns on a creel, controlling the tension between the twisted yarns to be uniform through a rolling bearing and a belt, enabling the twisted yarns to pass through a reed customized according to specifications during weaving, weaving the twisted yarns by adopting an air jet loom, weaving the twisted yarns into grey cloth with preset width, and adopting cotton yarns or elastic yarns as weft yarns;
a gum dipping procedure: performing gum dipping treatment on the gray cloth to enable the cord cloth to achieve ideal physical properties and have the capability of bonding with rubber, and adopting a single-bath gum dipping method or a double-bath gum dipping method; dipping RFL resin in a first bath when a single-bath dipping method is adopted, and dipping the cord fabric in the dipping process sequentially through an oven, a tension area and a glue tank; when a double-bath impregnation method is adopted, Epoxy and MDI solution are impregnated in a first bath to activate fibers, RFL resin is impregnated in a second bath, and cord fabric is sequentially impregnated through an oven, a tension zone and a glue tank during impregnation. In the dipping process, the cord fabric is subjected to thermal extension and retraction deformation, and the total elongation is 0-4%.
The strength, elongation at break and elongation at set load were measured according to ASTM D885, under the conditions as described above. Heat shrinkage testing was according to ASTM D885 under the following conditions: at 180 ℃ under a load of 0.05g/d, the equilibration time was 2 minutes.
The GD fatigue test conditions are as follows: 1800rpm,24hr, 20% compression, 6.5% extension, room temperature test.
As can be seen from the test data, the tire dipped cord fabrics manufactured in the embodiments 1 to 6 of the invention have various physical properties and fatigue resistance reaching the superior industrial level, while the cord fabrics manufactured in the comparative examples 1 to 4 have obviously poorer physical properties, and particularly, the fatigue resistance of the cord fabrics is greatly influenced because the fiber damage is larger in the high-speed spinning process.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A method for manufacturing cord fabric by utilizing bio-based chinlon 56 is characterized by comprising the following steps:
1) thickening the basic slices of the bio-based chinlon 56 to obtain thickened slices, wherein the viscosity value of the thickened slices is 70-120;
2) melting the tackifying slice in the step 1), spinning, and cooling the tow step by step;
3) oiling, drafting, shaping and coiling the tows cooled step by step in the step 2) to obtain nylon 56 industrial yarns;
4) twisting, weaving, dipping and shaping the nylon 56 industrial yarn in the step 3) to obtain the nylon 56 cord fabric.
2. The method for producing a cord fabric using bio-based chinlon 56, according to claim 1, wherein in the step 2), the water content of the sticky pieces is adjusted to 150 to 800ppm before the sticky pieces are melted.
3. The method for manufacturing cord fabric using bio-based chinlon 56 as claimed in claim 1 or 2, wherein in the step 2), a copper particle heat-resistant agent is added when the tackifying slice is melted, and the content of copper particles is 50-130 ppm.
4. The method for manufacturing cord fabric by using bio-based chinlon 56 as claimed in claim 3, wherein in the step 2), the viscosity-increasing slices are melt-extruded by a screw extruder;
the temperature of C4 of the screw extruder is 265-305 ℃, the temperature of C5 is 265-300 ℃, and the head pressure is 9-15 MPa.
5. The method for manufacturing cord fabric by using bio-based chinlon 56 as claimed in claim 4, wherein in the step 2), the gradual cooling process comprises sequentially performing post-heating and cooling wind cooling on the filament bundles;
wherein the post-heating temperature is 220-340 ℃;
the temperature of the cooling air is 13-25 ℃, the humidity is 50-90%, and the speed is 0.4-0.9 m/s.
6. The method for manufacturing cord fabric by using bio-based chinlon 56 as claimed in claim 5, wherein in the step 3), in the drafting process: the speed of the first hot roller group is 350-650 m/min, and the temperature is 25-80 ℃; the speed of the second hot roller group is 360-650 m/min, and the temperature is 25-80 ℃; the speed of the third hot roller group is 1000-1600 m/min, and the temperature is 100-200 ℃;
in the shaping process: the speed of the fourth hot roller group is 2400-3000 m/min, and the temperature is 170-250 ℃; the speed of the fifth hot roller group is 2400-3000 m/min, and the temperature is 170-250 ℃; the speed of the sixth hot roller group is 2400-3000 m/min, and the temperature is 30-220 ℃.
7. The method for manufacturing cord fabric by using bio-based chinlon 56 as claimed in claim 6, wherein in the step 3), the winding speed is 2300-2900 m/s in the winding process.
8. The method for manufacturing cord fabric by using bio-based chinlon 56 as claimed in claim 7, wherein in the step 4), the yarn twisting process: carrying out primary twisting and secondary twisting on the industrial yarn by using a direct twisting machine or a two-for-one twisting machine to prepare double-strand twisted yarn;
weaving: arranging the twisted yarns on a creel, controlling the tension between the twisted yarns to be uniform through a rolling bearing and a belt, and weaving the twisted yarns into grey cloth with a preset width;
a gum dipping procedure: and performing gum dipping treatment on the gray cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110929685.8A CN113668076A (en) | 2021-08-13 | 2021-08-13 | Method for manufacturing cord fabric by utilizing bio-based chinlon 56 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110929685.8A CN113668076A (en) | 2021-08-13 | 2021-08-13 | Method for manufacturing cord fabric by utilizing bio-based chinlon 56 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113668076A true CN113668076A (en) | 2021-11-19 |
Family
ID=78542686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110929685.8A Pending CN113668076A (en) | 2021-08-13 | 2021-08-13 | Method for manufacturing cord fabric by utilizing bio-based chinlon 56 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113668076A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875511A (en) * | 2022-05-31 | 2022-08-09 | 上海凯赛生物技术股份有限公司 | Polyamide 56 high-strength wire for release cloth, and preparation method and application thereof |
| CN114959934A (en) * | 2022-05-31 | 2022-08-30 | 上海凯赛生物技术股份有限公司 | Polyamide 56 high-strength yarn for cord fabric, cord fabric and preparation method and application thereof |
| WO2023140819A1 (en) * | 2022-01-19 | 2023-07-27 | Kordsa Teknik Tekstil A.S. | Polyamide 5.6 based reinforcement cords for elostomeric articles |
| WO2023243719A1 (en) * | 2022-06-16 | 2023-12-21 | 東レ株式会社 | Nylon 66 fibers and woven/knit article |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009068132A (en) * | 2007-09-12 | 2009-04-02 | Toray Ind Inc | Fiber, rubber-reinforcing cord and reinforced rubber |
| CN103966681A (en) * | 2014-05-19 | 2014-08-06 | 于海龙 | POY-DTY production method for chinlon 56DTY high stretch yarn |
| CN110055602A (en) * | 2019-05-22 | 2019-07-26 | 江苏太极实业新材料有限公司 | 56 high-tenacity industrial yarn of polyamide and preparation method thereof |
| CN110117835A (en) * | 2013-10-28 | 2019-08-13 | 上海凯赛生物技术研发中心有限公司 | Nylon fiber and preparation method thereof |
| CN111423578A (en) * | 2020-03-31 | 2020-07-17 | 上海凯赛生物技术股份有限公司 | High-viscosity polyamide 56 resin, high-strength polyamide 56 industrial yarn and preparation method and application thereof |
| CN111691000A (en) * | 2020-06-02 | 2020-09-22 | 浙江恒澜科技有限公司 | Method for preparing polyamide 56 industrial yarn by plasticizing and melting |
| CN112647310A (en) * | 2020-11-24 | 2021-04-13 | 江苏太极实业新材料有限公司 | Method for manufacturing polyamide 56 dipped cord fabric with high residual dry heat shrinkage force |
| CN112779622A (en) * | 2019-11-07 | 2021-05-11 | 上海凯赛生物技术股份有限公司 | Polyamide 56 industrial yarn and preparation method and application thereof |
-
2021
- 2021-08-13 CN CN202110929685.8A patent/CN113668076A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009068132A (en) * | 2007-09-12 | 2009-04-02 | Toray Ind Inc | Fiber, rubber-reinforcing cord and reinforced rubber |
| CN110117835A (en) * | 2013-10-28 | 2019-08-13 | 上海凯赛生物技术研发中心有限公司 | Nylon fiber and preparation method thereof |
| CN103966681A (en) * | 2014-05-19 | 2014-08-06 | 于海龙 | POY-DTY production method for chinlon 56DTY high stretch yarn |
| CN110055602A (en) * | 2019-05-22 | 2019-07-26 | 江苏太极实业新材料有限公司 | 56 high-tenacity industrial yarn of polyamide and preparation method thereof |
| CN112779622A (en) * | 2019-11-07 | 2021-05-11 | 上海凯赛生物技术股份有限公司 | Polyamide 56 industrial yarn and preparation method and application thereof |
| CN111423578A (en) * | 2020-03-31 | 2020-07-17 | 上海凯赛生物技术股份有限公司 | High-viscosity polyamide 56 resin, high-strength polyamide 56 industrial yarn and preparation method and application thereof |
| CN111691000A (en) * | 2020-06-02 | 2020-09-22 | 浙江恒澜科技有限公司 | Method for preparing polyamide 56 industrial yarn by plasticizing and melting |
| CN112647310A (en) * | 2020-11-24 | 2021-04-13 | 江苏太极实业新材料有限公司 | Method for manufacturing polyamide 56 dipped cord fabric with high residual dry heat shrinkage force |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023140819A1 (en) * | 2022-01-19 | 2023-07-27 | Kordsa Teknik Tekstil A.S. | Polyamide 5.6 based reinforcement cords for elostomeric articles |
| CN114875511A (en) * | 2022-05-31 | 2022-08-09 | 上海凯赛生物技术股份有限公司 | Polyamide 56 high-strength wire for release cloth, and preparation method and application thereof |
| CN114959934A (en) * | 2022-05-31 | 2022-08-30 | 上海凯赛生物技术股份有限公司 | Polyamide 56 high-strength yarn for cord fabric, cord fabric and preparation method and application thereof |
| CN114875511B (en) * | 2022-05-31 | 2024-02-09 | 上海凯赛生物技术股份有限公司 | Polyamide 56 high-strength yarn for release cloth, and preparation method and application thereof |
| CN114959934B (en) * | 2022-05-31 | 2024-05-03 | 上海凯赛生物技术股份有限公司 | Polyamide 56 high-strength yarn for cord fabric, preparation method and application thereof |
| WO2023243719A1 (en) * | 2022-06-16 | 2023-12-21 | 東レ株式会社 | Nylon 66 fibers and woven/knit article |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113668076A (en) | Method for manufacturing cord fabric by utilizing bio-based chinlon 56 | |
| CN110055602B (en) | Polyamide 56 high-tenacity industrial yarn and preparation method thereof | |
| WO2022110703A1 (en) | Method for manufacturing high-modulus low-shrinkage industrial filament by using recycled polyester | |
| CN1071812C (en) | Polyester filamentary yarn, polyester tyre cord and production thereof | |
| CN111411405B (en) | High-strength polyamide 56 industrial yarn and preparation method and application thereof | |
| CN105862152A (en) | Production method for high-speed spinning low-stretching high-modulus low-shrinkage polyester industrial filaments | |
| CN112095163A (en) | Method and equipment for preparing bio-based polyamide short fiber through integrated spinning and drafting | |
| CN105350101A (en) | High-strength-type high-modulus low-shrinkage polyester industrial fiber and processing technology thereof | |
| CN1327049C (en) | Production process of industrial polyester multifilament tow | |
| CN110295402B (en) | Preparation method of polyphenylene sulfide fiber | |
| LU502580B1 (en) | Production method of high-strength and high-modulus industrial polyamide (pa) 66 filament yarn | |
| JP5508183B2 (en) | Polyester cord for power transmission belt reinforcement | |
| JPS5953736A (en) | Polyester tire cord and production thereof | |
| CN113046851B (en) | Manufacturing method of high-strength high-dimensional-stability HMLS polyester industrial yarn | |
| CN115323520A (en) | Production method of high-strength ultralow-shrinkage polyamide 66 high-denier fiber | |
| KR20230048641A (en) | Recyclable polyamide multifilament fiber for tire cord and tire cord comprising the same | |
| JP4515919B2 (en) | Manufacturing method of polyester fiber for rubber reinforcement | |
| CN113400684A (en) | Preparation method of gum dipping cord fabric for passenger radial tire | |
| KR20170091968A (en) | Manufacturing method of polyethylene terephthalate cord having excellent fatigue resistance | |
| CN117364274B (en) | Full-biology-based high-strength nylon 510 fiber and preparation method and application thereof | |
| CN114959934B (en) | Polyamide 56 high-strength yarn for cord fabric, preparation method and application thereof | |
| JPH02210018A (en) | Polyamide fiber for reinforcing v-belt | |
| JPH11350249A (en) | Polyester fiber for v-belt reinforcement and its production and cord for v-belt reinforcement | |
| CN117867683B (en) | High-strength PA6 industrial yarn and structure process coupling regulation preparation method thereof | |
| CN103476976A (en) | Method for manufacturing polyethylene terephthalate drawn fiber, polyethylene terephthalate drawn fiber, and tire cord |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |