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A conductive geotextile based on medical waste and its preparation method and application

A technology for geotextiles and medical wastes, which is applied in the manufacture of conductive/antistatic filaments, geotextiles, and complete sets of equipment for producing artificial threads. The effect of improving overall performance

Active Publication Date: 2021-03-30
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the inventors of the present invention have found that the raw materials of medical plastic waste cannot be made into geotextiles.

Method used

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  • A conductive geotextile based on medical waste and its preparation method and application
  • A conductive geotextile based on medical waste and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 35 parts of sodium polyacrylate, 10 parts of silicon carbide whiskers, 15 parts of kaolin, and 40 parts of activated bamboo charcoal powder were thoroughly ground to obtain the modified filler. Add 35 parts of modified carbon black and 40 parts of DOP into 10 parts of 4% calcium stearate solution by mass percentage, fully stir, dry, grind into a uniform powdery mixture to obtain the processing aid. Medical plastic waste is TPE. The conductive material is 3 bundles of carbon fibers.

[0041] The preparation process is as follows:

[0042] (1) Disinfect the medical plastic waste, and then crush it to obtain the medical plastic waste crushed material.

[0043] (2) According to the calculation in parts by weight, fully blend 70 parts (parts by mass) of waste crushing materials, 6 parts (parts by mass) of modified fillers, and 9 parts (parts by mass) of processing aids to obtain a uniform mixture , and then melt-extrude the mixture through a parallel twin-screw extruder a...

Embodiment 2

[0050] The preparation method of this example is the same as that of Example 1, except that 75 parts by mass of medical plastic waste, 18 parts by mass of conductive materials, 8 parts of modified fillers, and 11 parts of processing aids are used. Medical plastic waste is a mixture of HDPE and TPE. The conductive material is tetraacicular zinc oxide whisker whose characteristic parameters are 0.2-1 μm in diameter and 5-15 μm in length. The modified filler is a mixture of 35 parts by mass of sodium polyacrylate, 10 parts by mass of short carbon fibers, 15 parts by mass of montmorillonite, and 40 parts by mass of graphite powder, which are fully ground and uniform. The processing aid is 35 parts by mass of modified tourmaline powder, 40 parts by mass of DOP added to 10 parts by mass of stearic acid solution with a concentration of 4% by mass, fully stirred, dried, and ground into a uniform powdery mixture.

Embodiment 3

[0052] The preparation method of this example is the same as that of Example 1, except that 78 parts of medical plastic waste, 20 parts of conductive material, 10 parts of modified filler, and 15 parts of processing aid are used. Medical plastic waste is a mixture of HDPE and TPE. The conductive material is calcium carbonate whisker whose characteristic parameters are 0.2-1 μm in diameter and 5-12 μm in length. The modified filler is a mixture of 35 parts by mass of sodium polyacrylate, 10 parts by mass of short carbon fibers, 15 parts by mass of montmorillonite, and 40 parts by mass of graphite powder, which are fully ground and uniform. The processing aid is 35 parts by mass of modified tourmaline powder, 40 parts by mass of DOP added to 10 parts by mass of stearic acid solution with a concentration of 4% by mass, fully stirred, dried, and ground into a uniform powdery mixture.

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Abstract

The invention discloses a medical waste-based conductive geotextile, a preparation method and an application. The preparation method comprises the steps of mixing broken materials of medical plastic wastes, a modified filler and a processing aid and then carrying out melt extrusion to obtain master batches; drying the master batches and then melting the master batches to obtain melt; stretching the melt into melt filaments, carrying out opening and lapping on the melt filaments and conductive fiber to obtain long filaments; and weaving the long filaments into a fabric precursor and then carrying out hot-rolling setting on the fabric precursor to obtain a conductive geotextile, wherein the modified filler comprises sodium polyacrylate, a first modified component, a second modified componentand a third modified component; and the processing aid comprises di(2-ethylhexyl)phthalate, a first aid component and a second aid component. According to the preparation method, the medical plasticwastes can be utilized to prepare the conductive geotextile with high comprehensive performance.

Description

technical field [0001] The invention belongs to the field of synthetic material engineering, and relates to a conductive geotextile based on medical waste, a preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the improvement of my country's medical system and the rapid development of medical care, medical and health institutions will produce a large amount of medical waste every day. According to statistics, in 2005, the annual production of medical waste in my country was 751,200 tons, and by the end of 2018, the generated The volume has increased to 2.1677 million tons. The amount of medical waste generated is so large, coupled with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/005D04H3/002D04H3/147D04H3/10D01D13/00D01D1/04D01D5/092D01D5/14D01F1/09D01F1/10
CPCD01D1/04D01D5/092D01D5/14D01D13/00D01F1/09D01F1/10D04H3/002D04H3/005D04H3/10D04H3/147D10B2401/16D10B2505/204
Inventor 李晋王佳斌左珅于淼章姜鹏崔新壮
Owner SHANDONG JIAOTONG UNIV