Method for regulating mechanical property of polyethylene terephthalate/polyolefin mixture by using magnetic field

Abstract

The invention discloses a method for adjusting and controlling polyethylene terephthalate (PET) / polyolefin blend material mechanical property by adopting the magnetic field function. The invention takes general polyolefin as a continuous phase, for example, polypropylene, polyethylene, and the copolymer of the polypropylene and the polyethylene, and takes polyethylene terephthalate as a discrete phase to prepare polymer blend; as the discrete phase, PET forms micro-fiber under the functions of cutting and stretching, so as to play the enhancement function to the blend. In the preparation process of the blend, the magnetic field function is enhanced, the magnetic field influences the orientation direction of a PET molecular chain and the disorientation of the molecular chain which is orientated through cutting and stretching, the orientation degree of the molecular chain in the PET micro-fiber and the mechanical property of the micro-fiber can be adjusted, thereby effectively controlling the mechanical property of the blend material.

Description

technical field [0001] The invention relates to a method for adjusting and controlling the mechanical properties of a polyethylene terephthalate / polyolefin blend material through the action of a magnetic field. technical background [0002] As a general-purpose polymer material, polyolefin is low in price, low in density, and easy to form and process. It has been widely used in many fields such as home appliances, automobiles, building materials, chemicals, and packaging. With the advancement of science and technology and the development of society, the requirements for materials are getting higher and higher. Polyolefin materials must be modified to improve their performance or endow them with certain functions in order to meet the increasing use requirements and further expand their applications. scope. [0003] The main ways to improve the performance of polyolefin materials by means of modification are: [0004] 1 Inorganic filler filling [0005] Filling polyolefin w...

AI Technical Summary

Problems solved by technology

However, the moment for the magnetic field to promote the orientation of the molecules of the diamagnetic substance is small. In the static state, due to the thermal motion and interaction between the molecules, only the torque generated by the action of the external magnetic field can make the polymer molecular chains in the molten state align regularly. very difficult

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