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Preparation method of antistatic material taking rhamnolipid as antistatic coating

A rhamnolipid and antistatic technology, applied in the field of preparation of antistatic materials, can solve the problems of eutrophication of water body, damage to water body ecosystem, loss of antistatic effect, poor compatibility, etc., achieve wide application value and reduce stability The effect of improving resistance and antistatic performance

Inactive Publication Date: 2018-09-07
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of antistatic agent has the disadvantage of being non-environmentally friendly. It uses petroleum as a raw material, is difficult to biodegrade, and the additive sodium tripolyphosphate causes eutrophication of the water body and destroys the ecosystem of the water body. Different chemical surfactants are suitable The types of materials are limited, the compatibility with the main material is poor during the blending process, and it is easy to overflow during use and lose the antistatic effect

Method used

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  • Preparation method of antistatic material taking rhamnolipid as antistatic coating
  • Preparation method of antistatic material taking rhamnolipid as antistatic coating
  • Preparation method of antistatic material taking rhamnolipid as antistatic coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Prepare rhamnolipid with a mass concentration of 0.1%;

[0032] (2) Polymer materials: polytetrafluoroethylene, polycarbonate, polystyrene, polymethyl methacrylate, nylon, polyethylene, polypropylene, polydimethylsiloxane, polyvinyl chloride, acrylonitrile -Butadiene-styrene was ultrasonically cleaned with ethanol, then dip-coated in rhamnolipid solution, and shaken for 4 h (rotating speed 200 rpm, temperature 37°C). Take it out slowly, place it at room temperature to dry, wash it twice with ultrapure water, and dry it at room temperature to obtain an antistatic material. The material which was not dipped in rhamnolipid was used as a control.

Embodiment 2

[0034] The antistatic material prepared in the above-mentioned Example 1 was subjected to static charge measurement. The material to be tested is contacted with PTFE several times, and the measured value under 60% humidity is as follows: figure 1 , measured at 15% humidity as image 3 . The material to be tested is contacted with nylon several times, and the measured value under 60% humidity is as follows: figure 2 , measured at 15% humidity as Figure 4 . Experiments show that the surface charge of the material treated with rhamnolipid is significantly reduced, and the antistatic effect is obvious.

Embodiment 3

[0036] With the antistatic material that above-mentioned embodiment 1 makes, carry out measurement contact angle experiment and surface resistivity test, experiment, the result sees Figure 5 , Table 1, Table 2. Experiments show that the hydrophilicity of the material treated with rhamnolipid is greatly improved, and the surface resistivity of the material decreases under different humidity, and the higher the humidity, the greater the decrease, which improves the antistatic performance of the material.

[0037] Table 1. Surface resistivity of materials before and after rhamnolipid surface modification at 60 % humidity

[0038]

[0039] Table 2. Surface resistivity of materials before and after rhamnolipid surface modification at 15 % humidity

[0040]

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Abstract

The invention discloses a preparation method of an antistatic material taking rhamnolipid as an antistatic coating. The antistatic material is prepared through a method for dipping and coating different materials with the rhamnolipid with the mass percent of 0.0001 percent to 0.4 percent. The treated material is an organic polymer insulating material: polytetrafluoroethylene, polycarbonate, polystyrene, polymethylmethacrylate, nylon, polyethylene, polypropylene, polydimethylsiloxane, polyvinyl chloride and acrylonitrile-butadiene-styrene; an inorganic insulating materials is prepared from silicon, aluminum oxide, mica and glass. The antistatic coating disclosed by the invention is a rhamnolipid monomolecular layer; the electrical conductivity of the surface of the treated material is greatly improved; meanwhile, free radicals on the surface of the material can be eliminated; the preparation method is simple and convenient; the performance of a material body is kept and the antistatic performance of the material is improved; the material has strong applicability and strong universality, is suitable for industrial large-scale application and has wide application value.

Description

technical field [0001] The invention belongs to the technical field of antistatic materials, and in particular relates to a preparation method of an antistatic material modified by using rhamnolipid as an antistatic coating. Background technique [0002] Static electricity is a natural physical phenomenon caused by the contact and re-separation of any two materials with different chemical compositions, or two materials with the same chemical composition but different physical states. Static electricity has its benefits, such as electrostatic dust removal, electrostatic printing, electrostatic separation, etc. However, the electrostatic hazards generated during the transportation, processing and use of materials are becoming more and more prominent. The light ones absorb dust, hinder packaging, and the severe ones cause fires and explosions. At present, most commonly used materials are insulating polymer materials, inorganic materials or semiconductor materials. In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04
CPCC08J2405/00C08J2369/00C08J2383/04C08J2355/02C08J2327/06C08J2327/18C08J2325/06C08J2333/12C08J2323/06C08J2323/12C08J7/0427
Inventor 方艳徐帆莉姜岷马江锋刘洁刘婧媛李炫莹
Owner NANJING UNIV OF TECH
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