PE-PET alloy material as well as preparation method and application thereof

Abstract

The invention discloses a PE-PET alloy material as well as a preparation method and application thereof. The PE-PET alloy material comprises the following raw materials in percentage by mass: 40%-70% of PE, 20%-40% of PET, 3%-10% of inorganic micro-nano filling powder, 3%-10% of a compatibilizer and 1%-5% of an auxiliary agent. According to the alloy material, the contents of the PE and the PET and the compatibility of the PE and the PET with other components are cooperatively controlled, the amount of the PE ensures that the elongation at break under high-speed stretching meets the requirement, the content of the PET ensures the requirement for the rebound angle after a nose wire produced by a downstream customer is folded, the rigid-tough balance required by an all-plastic nose wire material is met, the elongation at break of the material under high-speed stretching is more than 500%, the material is suitable for high-speed extrusion by downstream customers without breaking, the springback angle of the nose wire produced by the downstream customers after folding is less than or equal to 15 degrees, and the material can be widely applied to preparation of disposable mask nose wires.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, more specifically, to a PE-PET alloy material and its preparation method and application. Background technique [0002] The main function of the nose bridge strip of the disposable mask is to effectively fix the mask on the nose bridge. Generally, in order to achieve a good fixing effect and a good fit with the nose bridge, the material used to make the nose bridge strip is required to have good shape plasticity, toughness and ductility. sex. At present, the materials used in the market to make disposable mask nose strips mainly include: metal aluminum strips and plastic-coated metal wires. Because disposable masks are usually made of polyolefin materials, the presence of all-metal or part-metal nose strips will bring trouble to the environmental protection recycling and reuse of waste masks. In addition, metal materials also have defects such as easy corrosion and poor antibacteri...

AI Technical Summary

Problems solved by technology

The above-mentioned all-plastic nose bridge polyolefin modified material of the mask is made of modified polypropylene and modified polyethylene materials, and its elongation at break under high-speed stretching (500mm / min) and the rebound angle after folding in half There is no significant improvement in data verification, and the effect of compaction and shaping needs to be further improved