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Low cost high efficiency polyethylene conductive film and its preparation method

A technology of composite film and conductive film, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of high manufacturing cost and influence on popularization and application, and achieve the reduction of manufacturing cost, good electrical conductivity, The effect of better mechanical properties

Inactive Publication Date: 2006-11-29
SHANGHAI DAZHI SANHUA FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] On plastic film substrates such as CPP, BOPP, BOPET, vacuum evaporation ion plating and other methods, aluminum and metal, alloy, metal oxide, etc. are plated to make a composite conductive film, which has a metallic luster appearance and high mechanical properties. , good electrical conductivity, permanent electrical conductivity, and stable performance, but its manufacturing cost is high, which affects its popularization and application

Method used

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  • Low cost high efficiency polyethylene conductive film and its preparation method
  • Low cost high efficiency polyethylene conductive film and its preparation method

Examples

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Effect test

Embodiment 1

[0029] Put the metallocene polyethylene and special carbon black into the high-speed mixer according to the proportion of 70% and 30% by weight respectively, and fully stir for 15 minutes, unload the materials, add them into the co-rotating twin-screw extruder, and Mixing and plasticizing under the temperature of 180-200 ℃, after extrusion, it is pelletized by a hot pelletizer on the die surface, cut into oblate pellets, and cooled for later use. Or purchase polyethylene carbon black conductive special material with carbon black content of 30%.

[0030] The polyethylene and the nonionic surfactant antistatic agent are weighed in proportions of 80% and 15% by weight respectively, and 5% CaCO by weight is added 3 The powder is put into a high-speed mixer, fully stirred for 10 minutes, added into a co-rotating twin-screw extruder, mixed and extruded at a temperature of 130-160°C, and then pelletized by a hot pelletizer on the die surface after extrusion. Form into oblate pellets...

Embodiment 2

[0033] Select one set of three-layer co-extruded composite blown film production equipment (including three extruders), add polyethylene carbon black conductive special material into extruder I, and mix and extrude it at a temperature of 140-180°C; Add polyethylene and antistatic masterbatch into the mixer in proportions of 88%, 6%, and 6% by weight respectively, stir for 3 minutes, unload the materials, add to extruder II, and mix at 150-190°C Refining and plasticizing; add polyethylene, antistatic agent, and magnetic white mixed color masterbatch into the mixer in proportions of 86%, 6%, and 8% by weight respectively, stir for 3 minutes, unload the materials, and add them to the extruder III , and mixed and plasticized at a temperature of 150-190°C. The above three extruders respectively extrude the molten material into the three-layer co-extrusion multi-channel composite die head, and the die head heating temperature is 180-190°C; the melt is extruded into a film blank thro...

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Abstract

An efficient low-cost electrically conductive composite polyethene film is composed of an electrically conductive internal black layer made of polyethene-carbon black plastics, a middle transition layer made of polyethene plastics, and an external white or colored antistatic layer made of polyethene and antistatic mother material. It is prepared through three layers co-extruding, blowing, stretching, cooling and winding.

Description

technical field [0001] The invention relates to a conductive composite film, in particular to a conductive composite film which uses polyethylene as a base material and is made by extrusion mixing and a preparation method thereof. Background technique [0002] Polymer is an excellent electrical insulating material, so it has been widely used in the insulation of wire and cable sheaths, sheaths and electrical and electronic materials. [0003] At present, the antistatic and conductive plastic films that have been developed and produced are as follows: [0004] 1. Internally added antistatic film [0005] Add a certain amount of non-ionic surfactant to polyolefin plastic, and use extrusion blown film method to make antistatic film or reprocess it into antistatic film bag. This kind of film has good mechanical properties and optical properties, and has a glossy appearance. It can be painted in various colors. The film is transparent. Graphics and texts of various colors can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/00
Inventor 温耀贤
Owner SHANGHAI DAZHI SANHUA FILM
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