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CN-119773340-B - Inner lining bag of shielding antistatic ton bag and preparation method thereof

CN119773340BCN 119773340 BCN119773340 BCN 119773340BCN-119773340-B

Abstract

The application relates to the technical field of lining materials of ton bags, and particularly discloses a shielding antistatic ton bag lining bag and a preparation method thereof. A lining bag of a shielding antistatic ton bag is prepared from the multi-layer composite film with a structure of PET/antistatic layer/PA/PE, wherein the antistatic layer is prepared from the following raw materials, by weight, 40-75 parts of resin materials, 20-40 parts of fillers, 5-10 parts of color master batch, 1-3 parts of antistatic agents, 2-5 parts of dispersing agents, 0.2-0.4 part of antioxidants, 4-6 parts of polyimide nano fibers, 1-3 parts of modified carbon nano tubes, and S1, pretreating the raw materials of the carbon nano tubes with concentrated nitric acid solution to obtain pretreated carbon nano tubes, S2, dispersing the pretreated carbon nano tubes in xylene, adding deionized water and p-toluenesulfonic acid, then adding aniline monomers, and then adding ammonium persulfate for reaction, and obtaining the shielding antistatic ton bag after the reaction is finished. The lining bag of the shielding antistatic ton bag can keep stable antistatic performance under the influence of the severe temperature change environment.

Inventors

  • YU QINZHONG
  • YU WENJUN

Assignees

  • 上海唐科新材料科技有限公司

Dates

Publication Date
20260508
Application Date
20241230

Claims (9)

  1. 1. The lining bag of the shielding antistatic ton bag is characterized by being manufactured by processing a multilayer composite film with a PET/antistatic layer/PA/PE structure, and the antistatic layer is manufactured by the following raw materials in parts by weight: 40-75 parts of resin material; 20-40 parts of filler; 5-10 parts of color masterbatch; 1-3 parts of antistatic agent; 2-5 parts of dispersing agent; 0.2-0.4 part of antioxidant; 4-6 parts of polyimide nano fiber; 1-3 parts of modified carbon nano tube; the modified carbon nano tube is prepared by the following method: S1, placing a carbon nano tube raw material into a concentrated nitric acid solution, performing ultrasonic dispersion, and then performing high-temperature reflux, suction filtration and drying to obtain a pretreated carbon nano tube; S2, dispersing the pretreated carbon nano tube obtained in the step S1 in dimethylbenzene, adding deionized water and p-toluenesulfonic acid to obtain microemulsion, adding aniline monomer into the microemulsion under the ice bath condition, uniformly mixing, adding ammonium persulfate to react, and filtering, washing and drying after the reaction is finished to obtain the modified carbon nano tube; the antistatic agent was purchased from 129V for british cereal; the resin material consists of metallocene linear polyolefin resin and low-density polyethylene resin according to the weight ratio of 3:2; The filler is talcum powder.
  2. 2. The lining bag of the shielding antistatic ton bag of claim 1, wherein in the operation of the step S2, the weight ratio of the pretreated carbon nano tube to the aniline monomer is 1 (4-6).
  3. 3. The lining bag of the shielding antistatic ton bag of claim 1, wherein the weight ratio of the polyimide nano fiber to the modified carbon nano tube is 5:3.
  4. 4. The lining bag of the shielding antistatic ton bag according to claim 1, wherein the polyimide nano fiber has a diameter of 30-80nm and a length of 6-10 μm, and the carbon nano tube raw material has a diameter of 10-15nm and a length of 1-2 μm.
  5. 5. The lining bag of the shielding antistatic ton bag of claim 1, wherein the raw material of the antistatic layer is further added with 2-5 parts by weight of porous alumina.
  6. 6. The lining bag of a shielding antistatic ton bag of claim 5, wherein the particle size of the porous alumina is 300-500 nm, the average pore diameter is 100-200 nm, and the porosity is 30-50%.
  7. 7. The lining bag of the shielding antistatic ton bag of claim 1, wherein the dispersing agent is one or a combination of more of stearamide, hexenyl distearamide, glyceryl monostearate, glyceryl tristearate, microcrystalline paraffin, barium stearate, zinc stearate, calcium stearate, ethylene-acrylic acid copolymer and ethylene-vinyl acetate copolymer.
  8. 8. The lining bag of the shielding antistatic ton bag of claim 1, wherein the antioxidant is one or a combination of more of di-tert-butylphenol, triphenyl phosphate, o-phenylenediamine and catechol.
  9. 9. The method for preparing the lining bag of the shielding antistatic ton bag, which is characterized by comprising the following steps: (1) Preparing raw materials comprising resin materials, filler, color masterbatch, antistatic agent, dispersing agent, antioxidant, polyimide nanofiber and modified carbon nanotube according to a proportion; (2) Uniformly mixing the resin material, the filler, the color masterbatch, the antistatic agent, the dispersing agent, the antioxidant, the polyimide nanofiber and the modified carbon nanotube in the step (1), and extruding and granulating to obtain an antistatic layer material; (3) And (3) carrying out four-layer coextrusion blow molding on the antistatic layer material obtained in the step (2) and PET, PA and PE to obtain a multilayer composite film with a structure of PET/antistatic layer/PA/PE, and then carrying out bag manufacturing processing to obtain the shielding antistatic ton bag lining bag.

Description

Inner lining bag of shielding antistatic ton bag and preparation method thereof Technical Field The application relates to the technical field of lining materials of ton bags, in particular to a shielding antistatic ton bag lining bag and a preparation method thereof. Background The ton bag is a flexible transport packaging container, has the advantages of moisture resistance, dust resistance, radiation resistance, firmness and safety, and has enough strength structurally, and the loading and unloading efficiency is obviously improved and the development is very fast in recent years because the flexible transport packaging container is convenient to load and unload and carry. And the lining bag is sleeved in the ton bag generally, so that the ton bag has better bearing capacity, the safety of the goods in the transportation or stacking process is ensured, and the goods can be protected from being polluted and damaged by external environment. The structure of the lining bag of the ton bag is usually made of multilayer co-extrusion materials, and common materials of the lining bag of the ton bag comprise multilayer composite materials such as PET/Al/PA/PE, PA/Al/PE, PET/Al/PE and PET/PA/PE, and the advantages of different materials are combined through a composite process, and the lining bag is soft in hand feeling and low in cost, so that the lining bag has wide applicability. Because the lining bag of the ton bag has static electricity, powder material substances can be adsorbed in the production process, and the quality of the lining bag of the ton bag is reduced, so that the lining bag can be realized by adding an antistatic agent. The current antistatic function is realized by two methods of internal addition and external coating of an antistatic agent, wherein the method of internal addition of the antistatic agent adds an antistatic component into the lining bag, and the external coating of the antistatic agent is to coat the antistatic agent on the outer layer of the lining bag. For the above related art, the inventor believes that the lining bag of the ton bag is affected by the severe temperature change during the application process, and the severe temperature change affects the migration and diffusion of the antistatic agent molecules, and the molecular structure of the antistatic agent may be changed, so that the antistatic performance of the lining bag of the ton bag is obviously lost, and the overall application stability still needs to be improved. Therefore, there is a need to propose a solution to the above technical problems. Disclosure of Invention The application provides a shielding antistatic ton bag lining bag and a preparation method thereof, which aim to ensure that the antistatic performance of the ton bag lining bag can be kept to be excellent and stable under the influence of the severe temperature change environment. In a first aspect, the application provides a lining bag of a shielding antistatic ton bag, which adopts the following technical scheme: the lining bag of the shielding antistatic ton bag is prepared by processing a multilayer composite film with a structure of PET/antistatic layer/PA/PE, and the antistatic layer is prepared from the following raw materials in parts by weight: 40-75 parts of resin material; 20-40 parts of filler; 5-10 parts of color masterbatch; 1-3 parts of antistatic agent; 2-5 parts of dispersing agent; 0.2-0.4 part of antioxidant; 4-6 parts of polyimide nano fiber; 1-3 parts of modified carbon nano tube; the modified carbon nano tube is prepared by the following method: S1, placing a carbon nano tube raw material into a concentrated nitric acid solution, performing ultrasonic dispersion, and then performing high-temperature reflux, suction filtration and drying to obtain a pretreated carbon nano tube; S2, dispersing the pretreated carbon nano tube obtained in the step S1 in dimethylbenzene, adding deionized water and p-toluenesulfonic acid to obtain microemulsion, adding aniline monomer into the microemulsion under the ice bath condition, uniformly mixing, adding ammonium persulfate to react, and filtering, washing and drying after the reaction is finished to obtain the modified carbon nano tube. By adopting the technical scheme, the modified carbon nano tube is obtained by grafting polyaniline onto the surface of the acidified carbon nano tube, can show excellent compatibility and dispersibility in an antistatic layer and better interface bonding property with a resin material, can play an excellent antistatic property by matching with an antistatic agent, can play a role in thermal coordination protection on the antistatic agent by utilizing excellent structural stability and thermal conductivity of the modified carbon nano tube in a temperature change environment, further can play an excellent stable role in antistatic property, can play an excellent role in temperature resistance property, can keep mechanical property of the polyimide nano fi