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CN-121975297-A - High wear-resistant plastic steel composite material and nail supply pipe prepared from same

CN121975297ACN 121975297 ACN121975297 ACN 121975297ACN-121975297-A

Abstract

The invention relates to the technical field of plastic steel materials, in particular to a high wear-resistant plastic steel composite material and a nail supply pipe prepared by using the same. The high wear-resistant plastic steel composite material is prepared from the following raw materials, by mass, 10-30% of chopped carbon fibers, 2.5-5.0% of lubricants, 0.25-2.5% of modified nano aramid fibers, 0.1-0.5% of nucleating agents, 5-20% of sulfonated polyether ether ketone and the balance polyether ether ketone, wherein the nucleating agents are cubic crystal nano titanium nitride, and the particle size of the nano titanium nitride is 10-100nm. The invention has excellent wear resistance and good impact resistance, and is suitable for replacing Cr12MoV steel to be used as a light material for a nail pipe.

Inventors

  • GU JIAN
  • LI SI
  • XU XIAOXUN
  • CHENG TINGMAO

Assignees

  • 上海固极智能科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260128

Claims (10)

  1. 1. A high wear-resistant plastic steel composite material is characterized by being prepared from the following raw materials, by mass, 10-30% of chopped carbon fibers, 2.5-5.0% of a lubricant, 0.25-2.5% of modified nano aramid fibers, 0.1-0.5% of a nucleating agent, 5-20% of sulfonated polyether ether ketone and the balance polyether ether ketone, wherein the nucleating agent is cubic crystal type nano titanium nitride, and the particle size of the nano titanium nitride is 10-100nm.
  2. 2. The high wear-resistant plastic steel composite material of claim 1, wherein the modified nano-aramid fiber is a nano-aramid fiber with side chains grafted with carbon nanotubes, and the modified nano-aramid fiber is prepared from sulfonated nano-aramid fiber and aminosilane modified carbon nanotubes.
  3. 3. The high wear-resistant plastic steel composite material as set forth in claim 2, wherein the preparation method of the modified nano aramid fiber comprises the following steps: Uniformly mixing chlorosulfonic acid and a polar solvent to obtain 0.1-0.5wt% chlorosulfonic acid dispersion liquid, adding 4-8 parts of nano aramid fiber into 100 parts of 0.1-0.5wt% chlorosulfonic acid dispersion liquid, sulfonating at 100-400rpm and 75-95 ℃ for 5-10min, then performing ultrasonic dispersion for 3-5min, dispersing the filtered wet material in ice water, adding ethanol for quenching treatment, filtering, and performing vacuum drying on the obtained filter material to obtain sulfonated nano aramid fiber; Deionized water and ethanol are mixed uniformly according to the mass ratio of 1:9, then 2.5-5.0wt% of aminosilane is added, glacial acetic acid is added after uniform mixing to adjust the pH value to 3.5-4.0, so as to obtain aminosilane modified liquid, 0.5-2 parts of hydroxyl modified carbon nano tube is added into 100 parts of aminosilane modified liquid, the temperature is adjusted to 50-60 ℃, ultrasonic dispersion treatment is carried out for 15-30min, filtration is carried out, and the obtained filter material is subjected to vacuum drying, so that the aminosilane modified carbon nano tube can be obtained; Dispersing the sulfonated nano aramid fiber in a polar solvent to obtain 1-5wt% of sulfonated nano aramid fiber dispersion, adding an aminosilane modified carbon nanotube at room temperature, wherein the mass ratio of the aminosilane modified carbon nanotube to the sulfonated nano aramid fiber is1 (4-19), carrying out ultrasonic dispersion treatment for 15-30min, maintaining the mechanical stirring at 200-600rpm for reacting for 4-8h, filtering, and carrying out vacuum drying on the obtained filter material to obtain the modified nano aramid fiber.
  4. 4. The high abrasion-resistant plastic steel composite material of claim 3, wherein the polar solvent is at least one of dimethyl sulfoxide, dimethylformamide, chloroform and dichloromethane.
  5. 5. The high wear-resistant plastic steel composite material of claim 3, wherein the aminosilane is at least one of gamma-aminopropyl triethoxysilane, gamma-aminopropyl trimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyl trimethoxysilane and N-beta- (aminoethyl) -gamma-aminopropyl triethoxysilane.
  6. 6. The high abrasion-resistant plastic-steel composite material according to claim 3, further comprising the steps of dispersing 3-6 parts of the modified nano-aramid fiber obtained in the second step in 80-120 parts of a 4-8wt% calcium chloride aqueous solution, treating for 1-6 hours at 200-600rpm and 75-85 ℃, then adding 0.15-0.60 part of a composite silane modifier, treating for 0.5-2.0 hours at 200-600rpm and 75-85 ℃, filtering, and vacuum drying the obtained filter material to obtain the finished modified nano-aramid fiber.
  7. 7. The high wear-resistant plastic steel composite material according to claim 6, wherein the composite silane modifier comprises mercaptosilane, 4-hydroxyethyloxy benzophenone acrylate, a photoinitiator and an organic solvent, wherein the mercaptosilane comprises at least one of mercaptopropyl methyl dimethoxy silane, mercaptopropyl trimethoxy silane, mercaptopropyl triethoxy silane and mercaptopropyl methyl diethoxy silane, and the molar ratio of the mercaptosilane to the 4-hydroxyethyloxy benzophenone acrylate is 100 (100-102).
  8. 8. The high wear-resistant plastic steel composite material of claim 7, wherein the lubricant is at least one of flaky molybdenum disulfide, flaky tungsten disulfide, crystalline flake graphite, graphene nanoplatelets, boron nitride nanoplatelets, layered double hydroxide nanoplatelets, ‌ MXene nanoplatelets.
  9. 9. The high wear-resistant plastic steel composite material of claim 1, wherein the chopped carbon fiber, the lubricant and the modified nano aramid fiber are subjected to plasma surface modification treatment and wet modification treatment by a composite silane modifier.
  10. 10. A nail pipe prepared from the high wear-resistant plastic steel composite material of any one of claims 1 to 9, comprising the steps of: step one, uniformly mixing modified nano aramid fibers and sulfonated polyether-ether-ketone, adding the mixture into a double-screw extruder, and carrying out wiredrawing, cooling and blanking on the obtained melt to obtain modified nano aramid fibers/sulfonated polyether-ether-ketone master batches; and step two, respectively drying the modified nano aramid fiber/sulfonated polyether-ether-ketone master batch and the polyether-ether-ketone, uniformly mixing the dried polyether-ether-ketone, the modified nano aramid fiber/sulfonated polyether-ether-ketone master batch, the chopped carbon fiber, the lubricant and the nucleating agent, adding the mixture into a double-screw extruder, melting, mixing and extruding the mixture, and performing injection molding on the obtained melted and mixed material by an injection molding machine to obtain the high wear-resistant nail supply pipe.

Description

High wear-resistant plastic steel composite material and nail supply pipe prepared from same Technical Field The invention relates to the technical field of plastic steel materials, in particular to a high-wear-resistance plastic steel composite material and a nail supply pipe prepared by using the same. Background The nail supply pipe in the automatic screw assembling machine is mainly a high-chromium steel pipe, such as Cr12MoV steel which is mainly used. When the automatic screw assembling machine works, the transmission speed of rivets in the rivet feeding pipe is 0.8-1.2m/s, the rivets which are transmitted at high speed have larger impact abrasion to the surface of the rivet feeding pipe, and the surface of the rivet feeding pipe becomes rough or even has fine crack after long-time use, so that the friction coefficient is increased, and the rivet transmission is not facilitated, and the rivet needs to be replaced and maintained regularly. The polyether-ether-ketone material is an ideal plastic steel substitute material for the nail supply pipe, is beneficial to the lightweight design of an automatic screw assembly machine, can reduce the weight of a mechanical structure, reduces the vibration and noise of mechanical equipment, and can improve the performance and reliability of the machine. The polyether-ether-ketone material has the advantages of high strength, high modulus, heat resistance, corrosion resistance, self lubrication and the like, so that the polyether-ether-ketone material is widely applied to the fields of electronics, medical treatment, automobiles, mechanical manufacturing and the like, but with the widening of the application range of the polyether-ether-ketone, the physicochemical properties of the pure polyether-ether-ketone resin also show a certain limitation. When the polyether-ether-ketone material is used as a light-weight nail-feeding pipe material instead of Cr12MoV steel, the wear resistance of the nail-feeding pipe material is more highly demanded. Therefore, the inventor provides a high wear-resistant plastic steel composite material and a nail supply pipe prepared by using the same. Disclosure of Invention In order to meet the requirement of polyether-ether-ketone nail pipe material on high wear resistance, the invention provides a high wear-resistant plastic steel composite material and a nail pipe prepared by using the same. The invention provides a high wear-resistant plastic steel composite material, which is realized by the following scheme: A high-wear-resistance plastic steel composite material is prepared from the following raw materials, by mass, 10-30% of chopped carbon fibers, 2.5-5.0% of lubricants, 0.25-2.5% of modified nano aramid fibers, 0.1-0.5% of nucleating agents, 5-20% of sulfonated polyether-ether-ketone and the balance polyether-ether-ketone. Preferably, the sulfonated polyether-ether-ketone is sulfonated polyether-ether-ketone powder with the sulfonation degree of 40-60%. Preferably, the nucleating agent is cubic crystal nano titanium nitride, and the grain size is 10-100nm. Preferably, the lubricant is at least one of flaky molybdenum disulfide, flaky tungsten disulfide, crystalline flake graphite, graphene nanoplatelets, boron nitride nanoplatelets, layered double hydroxide nanoplatelets, ‌ MXene nanoplatelets. Further preferably, the lubricant is flaky molybdenum disulfide and/or flaky tungsten disulfide, wherein the flaky molybdenum disulfide has a particle size less than or equal to 1 mu m, and the flaky tungsten disulfide has a particle size less than or equal to 1 mu m. Preferably, the chopped carbon fiber, the lubricant and the modified nano aramid fiber are subjected to plasma surface modification treatment and wet modification treatment by a composite silane modifier. Further preferably, the high wear-resistant plastic steel composite material is prepared from the following raw materials, by mass, 14-16% of chopped carbon fibers, 2.8-3.2% of flaky tungsten disulfide with the particle diameter less than or equal to 1 mu m, 0.8-1.0% of modified nano aramid fibers, 0.25-0.35% of nano titanium nitride with the particle diameter of 10-100nm, 9-12% of sulfonated polyether-ether-ketone and the balance polyether-ether-ketone. The invention has excellent wear resistance and good impact resistance, is suitable for replacing Cr12MoV steel to be used as a light material for a nail pipe, and meets the light design requirement of an automatic screw assembly machine. Preferably, the modified nanometer aramid fiber is a nanometer aramid fiber with side chains grafted with carbon nanotubes, and the modified nanometer aramid fiber is prepared from sulfonated nanometer aramid fiber and aminosilane modified carbon nanotubes. Preferably, the preparation method of the modified nano aramid fiber comprises the following steps: Uniformly mixing chlorosulfonic acid and a polar solvent to obtain 0.1-0.5wt% chlorosulfonic acid dispersion liquid, adding 4-8 parts of