Graphene and carbon black modified PET multifunctional spinning fiber conductive master batch

Abstract

The invention discloses a graphene and carbon black modified PET (Polyethylene Terephthalate) multifunctional spinning fiber conductive master batch. The preparation method of the graphene and carbon black modified PET multifunctional spinning fiber conductive master batch comprises the following steps: blending graphene powder, carbon black PET slices and other auxiliary raw materials for preparing the master batch, melting, and granulating by using a twin-screw machine. The conductive master batch material is prepared from the following components in percentage by mass: 40-45% of carrier resin PET, 20-25% of graphene powder, 15-20% of superconductive nano carbon black, 5% of a lubricant, 2% of an antioxidant, 3% of a dispersant and 2-6% of a flexibilizer. The conductivity of the prepared graphene and carbon black modified PET multifunctional conductive master batch is 10 < 4 > power, and the graphene and carbon black modified PET multifunctional conductive master batch has antistatic, far infrared, antibacterial / bacteriostatic, uvioresistant, anion and acarus killing functions and the like. The conductive fiber can be widely applied to national defense and military industry and daily life of people, and has a very wide application prospect.

Description

Technical Field

[0001] This invention relates to the field of high-tech technology, specifically describing a graphene- and carbon black-modified PET multifunctional conductive masterbatch for textile fibers. Background Technology

[0002] Graphene is a two-dimensional crystal, a two-dimensional carbon nanomaterial composed of carbon atoms arranged in a hexagonal honeycomb lattice with sp2 hybrid orbitals. Graphene possesses excellent optical, electrical, and mechanical properties, and has significant application prospects in materials science, micro-nano fabrication, energy, biomedicine, and drug delivery, earning it the nicknames "black gold" and "king of new materials." Graphene conductive fiber fabrics offer superior antistatic, antibacterial / bacteriostatic, infrared, UV-resistant, negative ion, and mite-repellent properties. It is hailed as a "revolutionary fiber of an epoch-making era" and has very broad application prospects in national defense, oil fields, coal mines, and the civilian textile industry. Summary of the Invention

[0003] The purpose of this invention is to provide a graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers.

[0004] The technical solution adopted by the present invention to solve the technical problem is as follows: by mass percentage, the conductive masterbatch material is composed of 40-45% carrier resin PET, 20-25% graphene powder, 15-20% superconducting nano carbon black, 5% lubricant, 2.0% antioxidant, 3.0% dispersant, 2-6% toughening agent and 2% other auxiliary materials.

[0005] The carrier resin PET has the following properties: intrinsic viscosity above 0.67 dl / g, terminal carboxyl group 24 mol / ±4, melting point 260 ℃±2, and diethylene glycol 1.1±0.15%.

[0006] The graphene is a black graphene powder with a particle size (D50) of 3-6 μm and a bulk density of 0.15-0.20 g / ml.

[0007] The filler is superconducting nano-carbon black: oil absorption value 170ml / 100g, STSA specific surface area 130m² / g, pH value 7.5, and residue on a 45μm sieve <25ppm.

[0008] The lubricant mentioned is PE wax: which is polyhexene wax (PE-0319X), a type of ultra-low molecular weight polyhexene.

[0009] The antioxidant mentioned is antioxidant 1010, chemical name: pentaerythritol tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate].

[0010] The dispersant is YY-502A conductive and thermally conductive masterbatch superdispersant, which improves flowability and mechanical properties.

[0011] The toughening agent mentioned is POE. POE refers to polyolefin thermoplastic elastomer, a high-performance polyolefin that can be used as a toughening agent. Its components are generally ethylene and a certain amount of α-olefins (1-butene, 1-hexene, 1-octene, etc.). In a narrow sense, POE mainly refers to ethylene-octene copolymers. POE toughening agents have excellent toughness, good processability, excellent aging resistance, and good flowability.

[0012] The preparation method of the above-mentioned graphene and carbon black modified PET multifunctional conductive masterbatch includes the following steps: (1) Weigh out PET (polyester) chips, graphene powder, superconducting nano carbon black, lubricant, antioxidant, dispersant, toughening agent and other necessary auxiliary materials according to the weight ratio. Pour them into a high-speed mixer and mix them to make the materials uniform and slightly polymerize. The temperature of the high-speed mixer is 80-90 degrees and the mixing time is 20-30 minutes. After cooling for 10 minutes, crush them in a plastic crusher to obtain a well-mixed and uniform material. (2) The well-mixed and uniform material obtained above is fed into the main feed hopper of a twin-screw extruder for melt mixing. The set temperature of the extruder is 200-260 ℃. After melt extrusion, drawing, cutting and drying in the twin-screw extruder, graphene and carbon black modified PET multifunctional conductive fiber masterbatch is obtained. Attached Figure Description Figure 1 It is a graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers; Figure 2 It is a graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers (resistance 10). 4 ohm).

Claims

1. Graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers.

2. Graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers. Its characteristics are: Its composition by mass percentage is as follows: 40-45% carrier resin PET, 15-20% graphene powder, 20-25% superconducting nano carbon black filler, 5% lubricant, 2.0% antioxidant, 3.0% dispersant, and 2-6% toughening agent.

3. The graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers as described in claim 1. Its characteristic is that... The carrier resin PET chips have an intrinsic viscosity of ≥0.67 dl / g, terminal carboxyl groups of 24 mol / ±4, melting point of 260℃±2, diethylene glycol of 1.1±0.15%, moisture content ≤0.4%, and ash content ≤0.06%.

4. The graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers as described in claim 1. Its characteristics are: The graphene black powder has a particle size (D50) of 3-6 μm, a bulk density of 0.15-0.20 g / ml, a moisture content of ≤1.5%, a carbon content of over 95%, a graphene flake thickness of <15 nm, and a powder pressing resistance of 45 mΩ·cm.

5. The graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers as described in claim 1. Its characteristic is that... The filler is superconducting nano-carbon black: oil absorption value 170ml / 100g, STSA specific surface area 130m² / g, pH value 7.5, 45μm sieve residue <25ppm, sulfur content <1%, ash content <0.15%.

6. The graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers as described in claim 1. Its characteristic is that... The lubricant is polyethylene wax (PEW-0319X), a type of ultra-low molecular weight polyethylene. It has a melting point of 90-100℃, viscosity <20 mPa·s, and penetration <5*10⁻⁶. -1 nm, density 0.92-0.96 g / cm³ 3 .

7. The graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers as described in claim 1. Its characteristic is that... The antioxidant mentioned is Antioxidant 1010, chemical name: pentaerythritol tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]. Melting point: 100-115℃, content: ≥98%, density: 1.

15.

8. The graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers as described in claim 1. Its characteristic is that... The dispersant is YY-502A, a conductive and thermally conductive masterbatch superdispersant, which improves flowability and mechanical properties. Melting point: low melting point ≥70℃, high melting point ≥130℃; viscosity: 300-400cps; decomposition temperature: ≥280℃; density: ≤0.92g / cm³. 3 .

9. The graphene and carbon black modified PET multifunctional conductive masterbatch for textile fibers as described in claim 1. Its characteristic is that... The toughening agent mentioned is POE. POE refers to polyolefin thermoplastic elastomer, a high-performance polyolefin that can be used as a toughening agent. Density: 0.93 g / cm³ 3 Solubility index 4-6 g / 10 min, grafting rate 1.2%, moisture content 0.05%. Main function: toughening and compatibility enhancement.

10. The method for preparing graphene and carbon black modified PET multifunctional conductive masterbatch as described in claim 1: characterized in that, Includes the following steps: Weigh out PET, graphene powder, superconducting nano carbon black, polyethylene wax, antioxidant, dispersant, toughening agent, and other necessary auxiliary materials according to the specified weight ratio. Pour them into a high-speed mixer and mix thoroughly, allowing for slight polymerization. The high-speed mixer temperature should be 80-90 degrees Celsius, and the mixing time should be 20-30 minutes. After cooling for 10 minutes, crush the mixture in a plastic crusher to obtain a well-mixed and homogeneous material.

11. The uniformly mixed material obtained above is fed into a twin-screw extruder. After melt mixing in the main feed hopper, the material is extruded, drawn, cut, and dried in the twin-screw extruder at a set temperature of 200-260℃ to obtain graphene, carbon black, and modified PET multifunctional conductive masterbatch for textile fibers. It is then further dried in an oven to enhance its conductivity.

Images