Preparation process of high-toughness copolymer nylon material for fishing line product

Abstract

The invention discloses a preparation process of a high-toughness copolymerized nylon material for a fishing line product, which comprises the following steps: weighing an EPDM (Ethylene-Propylene-Diene Monomer) elastomer, and melting carbon fiber whiskers and maleic anhydride to the surface of the EPDM elastomer through microwave irradiation to form a mixture A; weighing PA66 resin, the mixture A, glass fibers, kaolin, sodium benzoate, a coupling agent, a dispersing agent and an antioxidant in parts by weight, and physically blending in a high-speed mixer to obtain a mixture B; adding deionized water into the mixture B, putting into a reaction kettle, carrying out nitrogen replacement for 3-5 times, and heating to complete a polymerization reaction; discharging the material after polymerization is completed, cooling and pelletizing to obtain wet nylon slices; and putting the wet slices into an extraction drying device to obtain the high-toughness copolymerized nylon material. Through microwave irradiation, the carbon fiber whiskers and the maleic anhydride are fused to the surface of the EPDM elastomer, then the EPDM elastomer and the PA66 resin, the glass fibers, the kaolin, the sodium benzoate and other raw materials are subjected to blending polymerization, the high-toughness copolymer nylon material is formed, the toughness of the nylon material is greatly improved, and the nylon material is suitable for fishing line production.

Description

Technical Field

[0001] The invention belongs to the technical field of nylon materials, and in particular relates to a preparation process of high-toughness copolymer nylon materials for fishing line products. Background Art

[0002] As a commonly used raw material for production and life, nylon is used in a wide range of fields. In many cases, nylon is often required to have good elasticity and other properties so that it can adapt to a wider range of use environments. However, the nylon manufactured in the prior art often has relatively average properties such as toughness, which makes it difficult to meet the environment with high toughness requirements in actual use, thus greatly reducing its scope of use, especially in the application of fishing lines. Fishing lines with high toughness are often more expensive and are more preferred by fishermen.

[0003] Therefore, it is an urgent problem to be solved by the present invention to provide a high-toughness nylon material composition and a method for preparing high-toughness nylon which has higher toughness, better performance and a wider range of applications in actual use. Summary of the invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a preparation process of high-toughness copolymer nylon material for fishing line products, thereby avoiding the trouble of insufficient toughness of nylon materials in the past.

[0005] In order to solve the above technical problems, the present invention discloses a process for preparing a high-toughness copolymer nylon material for fishing line products, which comprises: Step a. Weighing an EPDM elastomer, melting the carbon fiber whiskers and maleic anhydride onto the surface of the EPDM elastomer by microwave irradiation to form a mixture A; Step b. Weigh PA66 resin, mixture A, glass fiber, kaolin, sodium benzoate, coupling agent, dispersant, and antioxidant in parts by weight, and physically blend them in a high-speed mixer to obtain a mixture B; Step c. Add deionized water to the mixture B and put it into a reactor, replace it with nitrogen 3-5 times, and heat to complete the polymerization reaction; Step d. After the polymerization is completed, the material is discharged, cooled and pelletized to obtain nylon wet chips; Step e. Place the wet slices into an extraction and drying device, extract with boiling water at 100° C. for 36 hours, and dry with high-purity nitrogen at 135° C. for 36 hours to obtain a high-toughness copolymer nylon material.

[0006] According to one embodiment of the present invention, in step b, the components include 80-120 parts of PA66 resin, 8-16 parts of mixture A, 30-50 parts of glass fiber, 8-22 parts of kaolin, 10-20 parts of sodium benzoate, 10-30 parts of coupling agent, 0.5-10 parts of dispersant, and 0.5-8 parts of antioxidant in parts by weight.

[0007] According to one embodiment of the present invention, in step b, the components by weight include 80 parts of PA66 resin, 8 parts of mixture A, 30 parts of glass fiber, 8 parts of kaolin, 10 parts of sodium benzoate, 10 parts of coupling agent, 0.5 parts of dispersant, and 0.5 parts of antioxidant.

[0008] According to one embodiment of the present invention, in step b, the components include 120 parts of PA66 resin, 16 parts of mixture A, 50 parts of glass fiber, 22 parts of kaolin, 20 parts of sodium benzoate, 30 parts of coupling agent, 10 parts of dispersant and 8 parts of antioxidant in parts by weight.

[0009] According to one embodiment of the present invention, in step b, the components by weight include 100 parts of PA66 resin, 12 parts of mixture A, 40 parts of glass fiber, 15 parts of kaolin, 15 parts of sodium benzoate, 15 parts of coupling agent, 5 parts of dispersant, and 4 parts of antioxidant.

[0010] According to one embodiment of the present invention, the mass ratio of EPDM elastomer, carbon fiber whisker and maleic anhydride melt in mixture A is 15±5:40:40.

[0011] According to one embodiment of the present invention, in step c, the temperature of the reactor is slowly increased from 30 minutes to 240°C, then increased to 250°C in 1 hour, and finally increased to 260°C in 3 hours, and kept warm for 24 hours.

[0012] Compared with the prior art, the present invention can achieve the following technical effects: Through microwave irradiation, carbon fiber whiskers and maleic anhydride are melted onto the surface of EPDM elastomer, and then blended and polymerized with PA66 resin, glass fiber, kaolin, sodium benzoate and other raw materials to form a high-toughness copolymer nylon material, which greatly improves the toughness of the nylon material and is suitable for fishing line production.

[0013] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time. DETAILED DESCRIPTION

[0014] The following will describe the implementation methods of the present invention in detail with reference to examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0015] The invention discloses a preparation process of a high-toughness copolymer nylon material for fishing line products, which comprises: Step a. Weighing an EPDM elastomer, melting the carbon fiber whiskers and maleic anhydride onto the surface of the EPDM elastomer by microwave irradiation to form a mixture A; Step b. Weigh 80-120 parts of PA66 resin, 8-16 parts of mixture A, 30-50 parts of glass fiber, 8-22 parts of kaolin, 10-20 parts of sodium benzoate, 10-30 parts of coupling agent, 0.5-10 parts of dispersant, and 0.5-8 parts of antioxidant in parts by weight, and physically blend them in a high-speed mixer to obtain a mixture B; Step c. Add deionized water to the mixture B and put it into a reactor, replace it with nitrogen 3-5 times, and heat to complete the polymerization reaction; Step d. After the polymerization is completed, the material is discharged, cooled and pelletized to obtain nylon wet chips; Step e. Place the wet slices into an extraction and drying device, extract with boiling water at 100° C. for 36 hours, and dry with high-purity nitrogen at 135° C. for 36 hours to obtain a high-toughness copolymer nylon material. Example 1

[0016] Step a. Weighing an EPDM elastomer, melting the carbon fiber whiskers and maleic anhydride onto the surface of the EPDM elastomer by microwave irradiation to form a mixture A; Step b. Weigh 80 parts of PA66 resin, 8 parts of mixture A, 30-50 parts of glass fiber, 8 parts of kaolin, 10 parts of sodium benzoate, 10 parts of coupling agent, 0.5 parts of dispersant, and 0.5 parts of antioxidant in parts by weight, and physically blend them in a high-speed mixer to obtain a mixture B; Step c. Add deionized water to the mixture B and put it into a reactor, replace it with nitrogen 3-5 times, and heat to complete the polymerization reaction; Step d. After the polymerization is completed, the material is discharged, cooled and pelletized to obtain nylon wet chips; Step e. Place the wet slices into an extraction and drying device, extract with boiling water at 100° C. for 36 hours, and dry with high-purity nitrogen at 135° C. for 36 hours to obtain a high-toughness copolymer nylon material. Example 2

[0017] Step a. Weighing an EPDM elastomer, melting the carbon fiber whiskers and maleic anhydride onto the surface of the EPDM elastomer by microwave irradiation to form a mixture A; Step b. Weigh 120 parts of PA66 resin, 16 parts of mixture A, 50 parts of glass fiber, 22 parts of kaolin, 20 parts of sodium benzoate, 30 parts of coupling agent, 10 parts of dispersant, and 8 parts of antioxidant in parts by weight, and physically blend them in a high-speed mixer to obtain a mixture B; Step c. Add deionized water to the mixture B and put it into a reactor, replace it with nitrogen 3-5 times, and heat to complete the polymerization reaction; Step d. After the polymerization is completed, the material is discharged, cooled and pelletized to obtain nylon wet chips; Step e. Place the wet slices into an extraction and drying device, extract with boiling water at 100° C. for 36 hours, and dry with high-purity nitrogen at 135° C. for 36 hours to obtain a high-toughness copolymer nylon material. Example 3

[0018] Step a. Weighing an EPDM elastomer, melting the carbon fiber whiskers and maleic anhydride onto the surface of the EPDM elastomer by microwave irradiation to form a mixture A; Step b. Weigh 100 parts of PA66 resin, 12 parts of mixture A, 40 parts of glass fiber, 15 parts of kaolin, 15 parts of sodium benzoate, 15 parts of coupling agent, 5 parts of dispersant, and 4 parts of antioxidant in parts by weight, and physically blend them in a high-speed mixer to obtain a mixture B; Step c. Add deionized water to the mixture B and put it into a reactor, replace it with nitrogen 3-5 times, and heat to complete the polymerization reaction; Step d. After the polymerization is completed, the material is discharged, cooled and pelletized to obtain nylon wet chips; Step e. Place the wet slices into an extraction and drying device, extract with boiling water at 100° C. for 36 hours, and dry with high-purity nitrogen at 135° C. for 36 hours to obtain a high-toughness copolymer nylon material.

[0019] The nylon samples of Examples 1-3 were cut into standard fishing line wires with a length of 200 mm and a diameter of 0.4 mm. They were attached to a tensile testing machine and the test parameters, such as the load rate and the test temperature, were set. After the test started, the fishing line wires were gradually stretched and subjected to the load until the breaking point was reached. During the test, the load-displacement curve of the test strips needed to be recorded, and the tensile strength, elongation at break and other indicators needed to be calculated.

[0020] It is measured that the tensile force in Example 3 can reach 2.5 kg, while that in Examples 1-2 is about 1.8 and 1.9 respectively. Therefore, Example 3 has the strongest toughness.

[0021] The mass ratio of EPDM elastomer, carbon fiber whisker and maleic anhydride melt in mixture A is 15±5:40:40. At this time, the alloy system undergoes a brittle-to-ductile transition, and the notched impact strength of the alloy reaches 92kJ / m2 at this mixture content. DSC and SEM analysis confirmed that nylon 66 / EPDM is a compatible system, EPDM is evenly dispersed in the nylon matrix, and the average particle size of the dispersed phase is about 0.3μm.

[0022] In addition, in step c, the temperature of the reactor is slowly increased from 30 minutes to 240°C, then increased to 250°C for 1 hour, and finally increased to 260°C for 3 hours, and kept warm for 24 hours, forming a three-stage polymerization, the reaction is more uniform, and the performance of the nylon product is stronger.

[0023] In summary, the present invention melts carbon fiber whiskers and maleic anhydride onto the surface of EPDM elastomer through microwave irradiation, and then blends and polymerizes with PA66 resin, glass fiber, kaolin, sodium benzoate and other raw materials to form a high-toughness copolymer nylon material, which greatly improves the toughness of the nylon material and is suitable for fishing line production.

[0024] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art shall not depart from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A process for preparing high-toughness copolymer nylon material for fishing line products, characterized in that: include: Step a. Weighing an EPDM elastomer, melting the carbon fiber whiskers and maleic anhydride onto the surface of the EPDM elastomer by microwave irradiation to form a mixture A; Step b. Weigh PA66 resin, mixture A, glass fiber, kaolin, sodium benzoate, coupling agent, dispersant, and antioxidant in parts by weight, and physically blend them in a high-speed mixer to obtain a mixture B; Step c. Add deionized water to the mixture B and put it into a reactor, replace it with nitrogen 3-5 times, and heat to complete the polymerization reaction; Step d. After the polymerization is completed, the material is discharged, cooled and pelletized to obtain nylon wet chips; Step e. Place the wet slices into an extraction and drying device, extract with boiling water at 100° C. for 36 hours, and dry with high-purity nitrogen at 135° C. for 36 hours to obtain a high-toughness copolymer nylon material.

2. The process for preparing high-toughness copolymer nylon material for fishing line products according to claim 1, characterized in that: In the step b, the components include 80-120 parts of PA66 resin, 8-16 parts of mixture A, 30-50 parts of glass fiber, 8-22 parts of kaolin, 10-20 parts of sodium benzoate, 10-30 parts of coupling agent, 0.5-10 parts of dispersant and 0.5-8 parts of antioxidant in parts by weight.

3. The process for preparing high-toughness copolymer nylon material for fishing line products according to claim 1, characterized in that: In the step b, the components by weight include 80 parts of PA66 resin, 8 parts of mixture A, 30 parts of glass fiber, 8 parts of kaolin, 10 parts of sodium benzoate, 10 parts of coupling agent, 0.5 parts of dispersant and 0.5 parts of antioxidant.

4. The process for preparing high-toughness copolymer nylon material for fishing line products according to claim 1, characterized in that: In the step b, the components by weight include 120 parts of PA66 resin, 16 parts of mixture A, 50 parts of glass fiber, 22 parts of kaolin, 20 parts of sodium benzoate, 30 parts of coupling agent, 10 parts of dispersant and 8 parts of antioxidant.

5. The process for preparing high-toughness copolymer nylon material for fishing line products according to claim 1, characterized in that: In the step b, the components by weight include 100 parts of PA66 resin, 12 parts of mixture A, 40 parts of glass fiber, 15 parts of kaolin, 15 parts of sodium benzoate, 15 parts of coupling agent, 5 parts of dispersant and 4 parts of antioxidant.

6. The process for preparing high-toughness copolymer nylon material for fishing line products according to claim 1, characterized in that: The melt mass ratio of the EPDM elastomer, the carbon fiber whisker and the maleic anhydride in the mixture A is 15±5:40:

40.

7. The process for preparing high-toughness copolymer nylon material for fishing line products according to claim 1, characterized in that: In step c, the temperature of the reactor is slowly increased to 240° C. in 30 minutes, then increased to 250° C. in 1 hour, and finally increased to 260° C. in 3 hours, and kept warm for 24 hours.