CN117364274B

CN117364274B - Full-biology-based high-strength nylon 510 fiber and preparation method and application thereof

Info

Publication number: CN117364274B
Application number: CN202311284110.0A
Authority: CN
Inventors: 纪冠华; 赵松传; 辛永
Original assignee: Qingdao Kangwei Chemical Fiber Co ltd
Current assignee: Qingdao Kangwei Chemical Fiber Co ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-03-15
Anticipated expiration: 2043-10-07
Also published as: CN117364274A

Abstract

The invention discloses a full-biology-based high-strength nylon 510 fiber, and a preparation method and application thereof. The preparation method comprises the following steps: salt forming reaction is carried out on sebacic acid and pentanediamine in a solvent to prepare nylon 510 salt; under the protection atmosphere condition, the mixed reaction system comprising nylon 510 salt, terephthalic acid dipiperidine, 5, 6-diamino-1-methyl uracil, reaction auxiliary agent and water is subjected to aqueous solution polycondensation and solid phase polymerization reaction to obtain nylon 510 resin; and carrying out melt spinning on the nylon 510 resin to obtain the full-biobased high-strength nylon 510 fiber. The full-biobased high-strength nylon 510 fiber provided by the invention has 100% biobased content, and is high in strength, weather resistance, aging resistance and long-term fatigue resistance, and the performance of the cord fabric can be obviously improved by adopting the full-biobased high-strength nylon 510 fiber to prepare the cord fabric.

Description

Full-biology-based high-strength nylon 510 fiber and preparation method and application thereof

Technical Field

The invention belongs to the technical field of high polymer material synthesis, and particularly relates to a full-biology-based high-strength nylon 510 fiber, and a preparation method and application thereof.

Background

The cord fabric is used as a framework material of tires and rubber products and has the functions of bearing huge pressure, impact load and strong vibration. The application condition scenes require that the cord fabric material must have the characteristics of high strength, good wear resistance, impact resistance, fatigue resistance, aging resistance, good adhesion with rubber and the like. In order to meet the performance requirements of materials for tyre fabrics and other products, nylon, aramid, polyester, steel wires and the like are generally adopted to manufacture the tyre fabrics at present, wherein the comprehensive performance of the nylon materials is most outstanding. In order to reduce the dependence on increasingly exhausted fossil energy, the preparation of the bio-based nylon material by adopting a biomass source which can be repeatedly regenerated, has wide sources and low cost is a very good technical solution and is also a necessary trend of the technical development of the nylon material. Researches show that the biological nylon material prepared by synthesis can reduce the carbon dioxide emission by 3-4 tons, and has remarkable carbon reduction effect.

Patent CN113668076a discloses a method for manufacturing a cord fabric using bio-based nylon 56, comprising the steps of: tackifying the bio-based nylon 56 slice to obtain high-viscosity slice resin; melt spinning the tackified slice, and cooling the filament bundle step by step; oiling, drafting, shaping and coiling the filament bundles to obtain nylon 56 industrial filaments; and twisting yarn, weaving, dipping and shaping are carried out on the nylon 56 industrial yarn to obtain the nylon 56 cord fabric, and the cord fabric obtained by the method has insufficient fatigue resistance and strength. Patent CN114959934A discloses a preparation method of nylon 56 high-strength yarn for cord fabric, and the breaking strength of the nylon 56 high-strength yarn prepared by the technology reaches 8cN/dtex, and the initial modulus is more than or equal to 48cN/dtex. However, the matrix resins in the above patent technologies are all nylon 56, and the adipic acid monomer is not a biomass source, so that the biomass content is limited to about 42%. There is currently no report of all bio-based nylon materials for cords for a while.

Disclosure of Invention

In order to solve all or part of the technical problems, the invention provides the following technical scheme:

the invention aims to provide a preparation method of an all-bio-based high-strength nylon 510 fiber, which comprises the following steps: under the protection atmosphere condition, the mixed reaction system comprising nylon 510 salt, terephthalic acid dipiperidine, 5, 6-diamino-1-methyl uracil, reaction auxiliary agent and water is subjected to aqueous solution polycondensation and solid phase polymerization reaction to obtain nylon 510 resin; and carrying out melt spinning on the nylon 510 resin to obtain the full-biobased high-strength nylon 510 fiber.

In some embodiments, the nylon 510 salt is obtained by salifying sebacic acid with pentylene diamine in a solvent.

In some embodiments, the salification reaction comprises: dispersing sebacic acid in a solvent, and adding the pentanediamine at the temperature of 60-80 ℃ to carry out the salification reaction; and controlling the pH value of the solution obtained by the reaction at the end point of the salification reaction to be 7.5-7.9.

In one embodiment, after the salification reaction is completed, the solution obtained by the reaction is subjected to suction filtration, washing and drying treatment to obtain the nylon 510 salt.

In some embodiments, the molar ratio of sebacic acid to pentanediamine is 1:1 to 1:1.05.

In some embodiments, the ratio of the total mass of sebacic acid and pentylene diamine to the mass of solvent is 100:100 to 150:100.

In some embodiments, the solvent comprises water. For example, the mass ratio of the total mass of the sebacic acid and the pentanediamine to the water is 100:100-150:100.

In some embodiments, the aqueous solution polycondensation comprises: under the protective atmosphere, the air pressure of the mixed reaction system is increased to 1.2-1.6 MPa, then the temperature of the mixed reaction system is increased to 210-230 ℃, and the pre-polymerization reaction is carried out for 1-2 h under the air pressure of 1.4-1.8 MPa; and after the pre-polycondensation reaction is finished, the temperature is raised to 240-250 ℃, and the vacuum reaction is carried out for 0.5-2 hours under the condition that the vacuum degree is minus 0.06-minus 0.08Mpa, so as to obtain the nylon 510 polymer.

In some embodiments, the nylon 510 polymer has a relative viscosity of, for example, 2.4 to 2.7.

In some embodiments, the amount of the dipiperidine terephthalate added in the mixed reaction system is 0.1 to 1wt% of the nylon 510 salt.

In some embodiments, the 5, 6-diamino-1-methyluracil is added in an amount of 0.1 to 0.5 weight percent of the nylon 510 salt.

In some embodiments, the amount of water added to the mixed reaction system is 20 to 30wt% of the nylon 510 salt.

In some embodiments, the reaction aid includes a self-capping agent and/or a catalyst.

Further, the capping agent includes at least one of benzoic acid, terephthalic acid, 2-naphthoic acid, and phthalic anhydride.

Further, in the mixed reaction system, the addition amount of the end capping agent is 0.2 to 1.0 weight percent of the nylon 510 salt.

Further, the catalyst includes at least one of sodium hypophosphite, phosphoric acid, phosphorous acid and metaphosphoric acid.

Further, in the mixed reaction system, the addition amount of the catalyst is 0.1-1.0wt% of nylon 510 salt.

In some embodiments, the solid phase polymerization reaction comprises: and heating the nylon 510 polymer obtained after the aqueous solution polycondensation to 150-180 ℃ in nitrogen atmosphere, and carrying out solid phase reaction for 6-8 h under the condition of the vacuum degree of 50-100 Pa to obtain the nylon 510 resin. The nylon 510 resin has a relative viscosity of, for example, 3.5 to 4.0 and a water content of 300 to 500ppm.

In some embodiments, the melt spinning comprises: and extruding, spinning, cooling, drafting and rolling the nylon 510 resin to obtain the nylon 510 fiber.

Specifically, the melt spinning includes, for example, putting the nylon 510 resin into a twin-screw extruder, extruding the nylon 510 resin to a spinneret plate through a screw in the twin-screw extruder, and then obtaining nylon 510 fibers through air cooling, drafting and winding devices.

Further, the temperature of the extrusion molding process is 220-260 ℃, the temperature of the spinning process is 250-265 ℃, and the spinning speed is 3500-4200 m/min.

In some embodiments, the method of preparing the dipiperidine terephthalate includes: mixing piperidine, tetrahydrofuran and triethylamine, and slowly and dropwise adding terephthaloyl chloride/tetrahydrofuran solution under the ice water bath reaction condition of 0-5 ℃ to react to prepare the dipiperidine terephthalate.

Further, the molar ratio of the terephthaloyl chloride to the piperidine is 2.1-2.2:1.

Further, the mass ratio of the triethylamine to the piperidine is 1:1.

Further, the addition amount of the tetrahydrofuran is 10-15 times of the total mass of the piperidine and the terephthaloyl chloride.

The second purpose of the invention is to provide the full bio-based high-strength nylon 510 fiber obtained by the preparation method in any one of the technical schemes.

The third purpose of the invention is to provide the application of the all-bio-based high-strength nylon 510 fiber in the technical scheme in preparing the cord fabric.

The fourth object of the present invention is to provide a method for producing a cord fabric, comprising: the biological high-strength nylon 510 fiber prepared in the technical scheme is subjected to twisting, sizing, warping, weaving, gum dipping, drying, hot stretching shaping and winding treatment to obtain the cord fabric.

In some embodiments, the twisting process is performed at a twisting rate of, for example, 10000 rpm, and the woven structure is, for example, a plain weave structure, and the weaving speed is, for example, 600 rpm.

In some embodiments, the dip treated dip includes an isocyanate and an epoxy.

In some examples, the temperature of the heat stretch setting treatment was 190℃and the stretch rate was 100m/min.

Compared with the prior art, the invention has at least the following beneficial effects: the nylon 510 fiber obtained by the preparation method provided by the invention has high strength and high toughness, and the 5, 6-diamino-1-methyl uracil introduced in the polymerization process can be combined with an amide group in a polyamide molecular chain to form multiple hydrogen bonds, so that a supermolecule aggregate with a three-dimensional structure is constructed, and the reinforcing and toughening effects of the polyamide fiber material are realized; meanwhile, the piperidine imine structure in the dipiperidine terephthalate has good antioxidation effect and has an improvement effect on the heat-resistant strength of nylon 510 fibers; the high-strength nylon fiber provided by the invention has the biobased content of 100%, and has high strength, excellent aging resistance and good toughness, especially low-temperature toughness; meanwhile, the preparation method provided by the invention has the advantages of simple process and mild reaction conditions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a DSC melting graph of nylon 510 resin in an exemplary embodiment of the present invention;

FIG. 2 is a nuclear magnetic resonance spectrum of dipiperidine terephthalate synthesized in an exemplary embodiment of the present invention.

Detailed Description

The technical scheme of the present invention is further described in detail below with reference to several preferred embodiments and the accompanying drawings, and the embodiments are implemented on the premise of the technical scheme of the present invention, and detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

The experimental materials used in the examples described below, unless otherwise specified, were all commercially available from conventional biochemicals.

Example 1

(1) Salt forming reaction: dissolving 20.2kg of sebacic acid in 30kg of deionized water, heating to 80 ℃ and uniformly stirring, slowly dripping 10.7kg of pentanediamine into the solution under the continuous stirring action, and strictly controlling the pH value of the system reaction end point within the range of 7.5-7.9 to obtain nylon 510 salt solution; then carrying out suction filtration washing operation on the obtained nylon 510 salt solution, respectively washing with deionized water and ethanol for three times, and then placing in a vacuum drying oven at 80 ℃ for 12 hours for drying to obtain PA510 salt;

(2) Polymerization preparation of PA 510: 100 parts of PA510 salt, 0.5 part of dipiperidine terephthalate (the structure and the nuclear magnetism are shown as shown in figure 2), 0.2 part of 5, 6-diamino-1-methyl uracil, 25 parts of deionized water, 0.2 part of benzoic acid and 0.5 part of sodium hypophosphite are put into a high-pressure polymerization reaction kettle, high-purity nitrogen is introduced and vacuumizing is carried out, and the process is repeated for more than three times to fully replace the air in the kettle; boosting the pressure to 1.5MPa under the continuous nitrogen atmosphere, starting a stirring device, controlling the stirring speed to be 80-150 rpm, raising the temperature in the kettle to 220 ℃, discharging water molecules in the mixed system, and maintaining the pressure (keeping the air pressure in the kettle to be 1.5-1.8 MPa) for 1 hour to perform pre-polycondensation reaction; then carrying out pressure relief and temperature rise operation, when the pressure is 0, raising the reaction temperature to about 250 ℃, finally carrying out vacuumizing operation, controlling the vacuum degree to be-0.08 Mpa, carrying out vacuumizing reaction for 1h at the reaction temperature of 250 ℃, discharging and granulating after the reaction is finished, thus obtaining PA510 resin with the relative viscosity of 2.52, wherein the DSC melting curve chart is shown in figure 1;

(3) PA510 solid phase polymerization: adding the PA510 resin into a tackifying kettle, gradually heating to 180 ℃ under nitrogen atmosphere, vacuumizing, keeping the vacuum degree at 100Pa, and reacting for 12 hours to obtain the high-viscosity PA510 resin, wherein the relative viscosity of the high-viscosity PA510 resin is 3.5, and the water content is 400ppm;

(4) Melt spinning of PA 510: melting high-viscosity PA510 resin through a double-screw extruder, and then carrying out melt spinning through a spinning box body to obtain primary filaments, wherein the primary filaments are preheated, drawn, heat-set and wound to obtain the full-biobased high-strength PA510 spinning fibers, the double-screw extrusion temperature is controlled to be 220-250 ℃, the spinning box temperature is controlled to be 255 ℃, the spinning speed of the primary filaments is 4000m/min, and the drawing ratio is 5:1, heat setting temperature is 150 ℃.

Preparation of PA510 cord fabric: the high-strength PA510 fiber prepared by the method can be subjected to the working procedures of twisting, sizing, warping, weaving, gum dipping, drying, hot stretching shaping and winding to prepare the PA510 cord fabric. Wherein the twisting speed is 10000 revolutions per minute, the knitting structure is a plain weave structure, and the knitting speed is 600 revolutions per minute; the dipping liquid is an isocyanate and epoxy resin system; the heat stretching and shaping temperature is 190 ℃ and the speed is 100m/min.

The results of the relevant properties of the all bio-based high strength nylon 510 fiber of this example are shown in table 1, and the results of the various properties of the cord fabric are shown in table 2.

Example 2

The difference between this example and example 1 is that the terephthalic acid dipiperidine addition in this example was 1%, the 5, 6-diamino-1-methyluracil addition was 0.5%, the benzoic acid addition was 0.15%, the solid phase temperature was 180℃and the reaction time was 24 hours, and the prepared high viscosity PA510 resin had a relative viscosity of 4.5. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in the examples are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Example 3

The difference between this example and example 1 is that the benzoic acid addition amount in this example was 0.25%, the 5, 6-diamino-1-methyluracil addition amount was 0.1%, and the prepared high viscosity PA510 resin had a relative viscosity of 3.0; in the process for preparing the spun fibers of this example, the draft ratio was 2:1. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in the examples are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Comparative example 1

This comparative example differs from example 1 only in that no terephthalic acid dipiperidine and 5, 6-diamino-1-methyluracil were added during the preparation of the nylon 510 fiber. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in this comparative example are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Comparative example 2

This comparative example differs from example 1 only in that only 0.5% of dipiperidine terephthalate was added during the preparation of the nylon 510 fiber. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in this comparative example are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Comparative example 3

This comparative example differs from example 1 only in that only 0.2 parts of 5, 6-diamino-1-methyluracil was added during the preparation of the nylon 510 fiber. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in this comparative example are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Comparative example 4

The comparative example differs from example 1 only in that 0.5% of terephthalic acid dipiperidine and 0.2 parts of 5, 6-diamino-1-methyluracil in the comparative example were added from the twin-screw extrusion process during melt spinning and were not added during polymerization. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in the examples are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Comparative example 5

The only difference between this comparative example and example 1 is that this comparative example replaces the dipiperidine terephthalate with 0.15% cuprous iodide. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in the examples are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Comparative example 6

The comparative example differs from example 1 only in that the comparative example replaces terephthalic acid dipiperidine with 0.15% of cuprous iodide, while also adding 0.2% of SEED aid (clariant, germany) during the polymerization. The results of the performance tests of the all-bio-based high strength nylon 510 fiber and the cord fabric obtained in the examples are shown in tables 1 and 2, respectively, in the same manner as in example 1.

Comparative example 7

In this example, PA66 resin having a relative viscosity of 3.5 and a copper ion concentration of 100ppm was used for melt spinning and preparation of the cord fabric.

The preparation process of the melt spinning comprises the following steps: melting PA66 resin through a double screw extruder, and then carrying out melt spinning through a spinning box body to obtain primary filaments, wherein the primary filaments are preheated, drawn, heat-set and wound to obtain the high-strength PA66 spinning fiber. Wherein, the twin-screw extrusion temperature is controlled to be 250-310 ℃, the spinning box temperature is 305 ℃, the spinning speed of the primary yarn is 4000m/min, and the draft ratio is 4:1, heat setting temperature 245 ℃.

The process for preparing the cord fabric is the same as in example 1.

The properties of the nylon 510 fibers and the cord fabrics of the examples and comparative examples of the present invention were tested according to the following test methods and criteria:

(1) Relative viscosity: the relative viscosity of the product at a concentration of 0.5g/dL was measured in a 98% concentrated sulfuric acid solution at (25.+ -. 0.01) ℃ using a Ubbelohde viscometer.

(2) Twist level: according to GB/T9101-2002.

(3) Breaking strength, breaking elongation, constant load (44.1N) breaking elongation of the cord fabric: the clamping length was 250mm and the stretching speed was 300mm/min as determined by an electronic tensile tester.

(4) Dry heat shrinkage of the cord fabric (150 ℃,2 min): measured according to GB/T9101-2002.

(5) Heat-resistant strength retention and fatigue breaking strength retention of the cord fabric: measured according to GB/T9101-2002.

(6) Fineness: measured according to GB/T14343.

(7) Breaking strength and elongation at break of the spun fiber: measured according to FZ/T54013-2009.

(8) Initial modulus of the spun fiber: measured according to FZ/T54013-2009.

(9) Heat-resistant strength retention and dry heat shrinkage of the spun fiber: measured according to FZ/T54013-2009.

The results of the performance tests of the nylon 510 fiber and the cord fabric obtained in the examples of the present invention and the comparative examples are shown in tables 1 and 2, respectively.

Table 1 properties of nylon 510 fiber prepared in each example and comparative example

Table 2 properties of the cord fabrics prepared in examples and comparative examples

As can be seen from the test results in Table 1, the PA510 spun fibers of examples 1 to 3 are superior to the comparative examples in overall properties, and are characterized by higher breaking strength, better retention of heat-resistant strength, and lower dry heat shrinkage. As can be seen from comparative examples 1-3 and comparative example 7, the combination property of the PA510 spun fiber provided by the invention completely reaches and exceeds the performance level of PA66 industrial yarn, and is a novel all-bio-based high-strength high-toughness fiber. This is probably due to the introduction of 5, 6-diamino-1-methyl uracil in the polymerization process, and the uracil derivative molecules are very easy to combine with amide groups in a polyamide molecular chain to form multiple hydrogen bonds, so that a supermolecule aggregate with a three-dimensional structure is constructed, and the reinforcing and toughening effects of the polyamide fiber material are realized; on the other hand, the piperidine imine structure in the dipiperidine terephthalate has good antioxidant effect, so that the heat-resistant strength retention rate of the PA510 fiber is greatly improved compared with the PA510 fiber without the dipiperidine terephthalate in the polymerization process. In addition, the test results of comparative examples 1 to 4 show that the addition of both terephthalic acid dipiperidine and 5, 6-diamino-1-methyluracil only during the polymerization process has the effect of significantly improving the overall properties of the PA510 fiber.

From table 2, it can be seen that the results of the cord fabric test prepared with the corresponding PA510 spun fibers also show a similar law to the spun fibers. Namely, the 5, 6-diamino-1-methyl uracil and terephthalic acid dipiperidine are introduced in the PA510 polymerization process, so that the comprehensive performance of the PA510 cord fabric product reaches the comprehensive performance level of the PA66 material cord fabric product, and the PA66 cord fabric product has more excellent fatigue resistance than the PA66 cord fabric product.

In addition, the inventors have conducted experiments with other materials, process operations, and process conditions as described in this specification with reference to the foregoing examples, and have all obtained desirable results.

It should be understood that the technical solution of the present invention is not limited to the above specific embodiments, and all technical modifications made according to the technical solution of the present invention without departing from the spirit of the present invention and the scope of the claims are within the scope of the present invention.

Claims

1. The preparation method of the all-bio-based high-strength nylon 510 fiber is characterized by comprising the following steps:

under the protective atmosphere condition, the mixed reaction system comprising nylon 510 salt, terephthalic acid dipiperidine, 5, 6-diamino-1-methyl uracil, reaction auxiliary agent and water is subjected to aqueous solution polycondensation and solid phase polymerization reaction to obtain nylon 510 resin; wherein the addition amount of the terephthalic acid dipiperidine is 0.1-1wt% of nylon 510 salt, and the addition amount of the 5, 6-diamino-1-methyl uracil is 0.1-0.5wt% of nylon 510 salt;

and carrying out melt spinning on the nylon 510 resin to obtain the full-biobased high-strength nylon 510 fiber.

2. The method of manufacturing according to claim 1, characterized in that: the nylon 510 salt is obtained by salifying sebacic acid with pentanediamine in a solvent.

3. The method of claim 2, wherein the salifying reaction comprises: dispersing sebacic acid in a solvent, and adding the pentanediamine at the temperature of 60-80 ℃ to carry out the salification reaction; and controlling the pH value of the solution obtained by the reaction at the end point of the salification reaction to be 7.5-7.9.

4. The preparation method according to claim 2, characterized in that: the molar ratio of the sebacic acid to the pentanediamine is 1:1-1:1.05; the mass ratio of the total mass of the sebacic acid and the pentanediamine to the solvent is 100:100-150:100; the solvent comprises water.

5. The method of claim 1, wherein the aqueous solution polycondensation comprises: in a protective atmosphere, raising the air pressure of the mixed reaction system to 1.2-1.6 MPa, raising the temperature of the mixed reaction system to 210-230 ℃, and carrying out pre-polycondensation reaction for 1-2 h under the air pressure of 1.4-1.8 MPa;

and after the pre-polycondensation reaction is finished, heating to 240-250 ℃, and carrying out vacuum reaction for 0.5-2 h under the condition that the vacuum degree is minus 0.06-minus 0.08Mpa to obtain the nylon 510 polymer.

6. The method of manufacturing according to claim 5, wherein: the relative viscosity of the nylon 510 polymer is 2.4-2.7.

7. The method of claim 1 or 5, wherein: in the mixed reaction system, the addition amount of water is 20-30wt% of nylon 510 salt.

8. The method of claim 1 or 5, wherein: the reaction auxiliary agent comprises a blocking agent and/or a catalyst.

9. The method of manufacturing according to claim 8, wherein: the end capping agent comprises at least one of benzoic acid, terephthalic acid, 2-naphthoic acid and phthalic anhydride; the addition amount of the end capping agent is 0.2-1.0wt% of the nylon 510 salt.

10. The method of manufacturing according to claim 8, wherein: the catalyst comprises at least one of sodium hypophosphite, phosphoric acid, phosphorous acid and metaphosphoric acid; the addition amount of the catalyst is 0.1-1.0wt% of nylon 510 salt.

11. The method of claim 1, wherein the solid phase polymerization reaction comprises:

and heating the nylon 510 polymer obtained after the aqueous solution polycondensation to 150-180 ℃ in a nitrogen atmosphere, and carrying out solid-phase reaction for 6-8 hours under the condition of the vacuum degree of 50-100 Pa to obtain the nylon 510 resin.

12. The method of claim 11, which is also characterized in that: the relative viscosity of the nylon 510 resin is 3.5-4.0, and the water content is 300-500 ppm.

13. The method of manufacturing according to claim 1, wherein the melt spinning comprises: and extruding, spinning, cooling, drafting and rolling the nylon 510 resin to obtain the nylon 510 fiber.

14. The method of manufacturing according to claim 13, wherein: the temperature of the extrusion molding process is 220-260 ℃, the temperature of the spinning process is 250-265 ℃, and the spinning speed is 3500-4200 m/min.

15. An all-bio-based high strength nylon 510 fiber obtained by the method of any one of claims 1-14.

16. Use of the all-bio-based high strength nylon 510 fiber of claim 15 in the preparation of a cord fabric.