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Carbon nanotube modified polypropylene antistatic film

A carbon nanotube modification, carbon nanotube technology, applied in the field of polypropylene antistatic film, can solve the problems of film production, processing, application, affect the appearance of the film surface, affect the normal use and other problems, achieve excellent mechanical properties, no Traces, no black spot effect

Inactive Publication Date: 2016-12-07
嘉兴高正新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause static electricity on the film to be difficult to disappear through conduction due to friction and other reasons during the production or processing of polypropylene film, which will bring problems to the production, processing and application of the film.
[0003] Antistatic PP film is first applied in the fields of powder packaging, food packaging, candy packaging, etc. Because of the accumulation of static electricity, it will cause dust or other dirt in the air of the PP film daughter-in-law, which not only affects the appearance of the film surface, but also affects the appearance of the film surface. Electrostatic adsorption will also occur during use, affecting normal use

Method used

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  • Carbon nanotube modified polypropylene antistatic film
  • Carbon nanotube modified polypropylene antistatic film
  • Carbon nanotube modified polypropylene antistatic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～16

[0046] Take the raw materials in Table 1 below, dissolve the dispersant in the solvent to obtain a dispersant solution, and then spray the dispersant solution into high-speed stirred carbon nanotubes (diameter 1-30 nm, length 1-100 μm, bulk density 0.02g / mL), process parameters are as shown in table 1, after high-speed stirring and mixing, activated carbon nanotubes are obtained;

[0047] Table 1

[0048]

[0049]

[0050] The performance test result of the prepared activated carbon nanotube is as follows table 2

[0051] Table 2

[0052]

[0053] The dispersibility experiment is detected by the following method: 10 mg of activated carbon nanotubes prepared in Examples 1 to 16 are added to 10 mL of the solvent (see Table 1) used to prepare the activated carbon nanotubes, and ultrasonically dispersed for 30 minutes to obtain a suspension solution, stand still, and when obvious stratification occurs, the recorded time is the storage time, and the results are shown in ...

Embodiment 17～32

[0056] Stir and mix the activated carbon nanotubes prepared in Examples 1 to 16 with the PP polymer powder (average particle diameter 100 μm to 2 mm), see Table 3 for the dosage, then mix with the additives in Table 4, and extrude through twin-screw The PP / carbon nanotube conductive masterbatch is obtained by machine melt extrusion, stretching, cooling and pelletizing; the processing technology of the twin-screw extruder is that the screw speed is 200r / min, and the extrusion temperature is 180°C.

[0057] The carbon nanotube content of the prepared PP / carbon nanotube conductive masterbatch is shown in Table 5.

[0058] Mix the prepared PP / carbon nanotube conductive masterbatch with the PP base material and various additives according to the formula in Table 5, and blow it through a blow molding machine to obtain an antistatic film. Resistivity and Surface Resistivity Test Method》Test the surface resistivity of the film, and detect its physical properties, the results are shown...

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Abstract

The invention discloses a carbon nanotube modified polypropylene antistatic film which is prepared by the following method: stirring carbon nanotube at high speed and simultaneously dissolving a dispersant in a liquid and spraying the liquid into the stirred carbon nanotube powder by a spraying mode to surface-activating the carbon nanotube, adding the active carbon nanotube used as a conductive filler into a PP material matrix to prepare PP / carbon nanotube conductive master batch with good conductivity, mixing the PP / carbon nanotube conductive master batch with PP matrix resin and a thermal-oxidative stabilizer, a flow modifier, an abrasive agent and other auxiliary agents, and preparing the polypropylene antistatic film by blow molding, tape-casting or two-way stretching technology. The prepared polypropylene antistatic film has good conductivity, strong antistatic endurance and long service life.

Description

1. Technical field [0001] The invention relates to a polypropylene antistatic film modified by carbon nanotubes. 2. Background technology [0002] As one of the five general-purpose plastics, polypropylene (PP) has rich sources of raw materials, low price, easy processing and molding, excellent mechanical properties, heat resistance, and comprehensive properties, and is non-toxic and easy to recycle. Therefore, its films and film products are widely used in many industries. fields have been widely applied. Because polypropylene molecules are non-polar and have high electrical insulation, its surface resistivity is 10 16 ~10 17 Ω, volume resistivity 10 16 ~10 18 Ω·cm. Therefore, relatively speaking, polypropylene is relatively easy to generate static charge accumulation among polymer materials. And once the accumulation of static electricity occurs, its harm cannot be underestimated. This will lead to static electricity on the film due to friction and other reasons dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/10C08K9/04C08K9/06C08K7/24C08J3/22
CPCC08J3/226C08J5/18C08J2323/12C08J2423/12C08K2201/001C08K2201/011C08L23/12C08L2201/04C08L2203/16C08K13/06C08K9/10C08K9/04C08K9/06C08K7/24
Inventor 甄万清王鹏
Owner 嘉兴高正新材料科技股份有限公司
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