Polymer film for copper-plastic composite belt, copper-plastic composite belt and application of copper-plastic composite belt

Abstract

The invention relates to a polymer film for a copper-plastic composite tape, a copper-plastic composite tape and the use thereof. The film includes the following components in parts by mass: 90-100 parts of modified EVA; 1-10 parts of ethylene acrylic acid copolymer ; 0.01-2 parts of antioxidant; wherein, the modified EVA includes a toughening modifier and an EVA substrate. A polymer film for copper-plastic composite tape with excellent moisture resistance is obtained, which is convenient to use and widely used. The film-forming properties, film toughness, and film bending resistance of the composite material are improved by optimizing the ratio and the selection of each component, and further increase the difficulty of water vapor intruding into the surface of the copper foil. The copper-plastic composite tape includes a copper tape layer and the polymer film for the copper-plastic composite tape, and the polymer film for the copper-plastic composite tape is wrapped on the outside of the copper tape layer.

Description

technical field [0001] The invention relates to the field of communication materials, in particular to a polymer film for a copper-plastic composite tape, a copper-plastic composite tape and applications thereof. Background technique [0002] Copper-plastic composite tape is a substitute for pure copper tape for cables, and is one of the important varieties of modern copper processing materials. The application in the communication cable and communication optical cable industry is continuously increasing. At present, the production standard of copper-plastic composite tape generally refers to YD / T 723.4-2007, that is, pure copper strip is used as the base material, the thickness is above 0.1mm, and the plastic film is made of ethylene copolymer or polyethylene plastic film, and the thickness is above 0.05mm. The tensile strength of Sulia film is ≥15MPa. Further thinning the base material of the pure copper strip, thereby reducing the total thickness of the copper-plastic c...

AI Technical Summary

Problems solved by technology

The existing copper-plastic composite tapes on the market have poor wrapping effect, and are susceptible to moisture in general environments, which greatly reduces the service life and virtually increases the production cost.

[0004] In order to overcome the disadvantages of existing copper-plastic composite belts, such as easy damp, short service life and poor structural stability, CN105575476A arranges a grease layer outside the plastic film layer, and then arranges a polyethylene polypropylene fiber layer outside the grease layer. The polyethylene polypropylene fiber layer can It plays a waterproof role, and the grease layer can further isolate moisture and enhance the moisture-proof effect. However, the plastic film layer has a grease layer, which has a limited application range and is not easy to repair. There are potential safety hazards. Once the grease layer is lost due to damage, the entire film The moisture-proof ability of the layer is worrying

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