Method for manufacturing modified polyropylene fiber

Abstract

The invention discloses a method for manufacturing modified polyropylene fiber. The method is based on synthesizing a methacrylate ester polymer, realizes synchronous in-situ reaction compatibilization as well as spinning and forming synchronously in a double-screw extruder, integrates grafting and forming processes, ensures that prospective grafting reaction is conducted on materials during melting extrusion, and adopts the technological processes as follows: (1), a process for manufacturing the methacrylate ester polymer; (2), a process for in-situ reaction compatibilization and melt spinning; and (3) post-processing process for modified fiber: stretching the modified polyropylene fiber to be a fiber of which the length is 2 to 8 times that of the modified polyropylene fiber in a 70 to 130 DEG C hot box, and carrying out relaxation heat setting for 0.5 to 20 min in the 70 to 130 DEG C hot box, so as to obtain the modified polyropylene fiber.

Description

technical field [0001] The invention relates to fiber preparation technology, in particular to a method for manufacturing modified polypropylene fiber with the function of absorbing organic liquid. The manufacturing method utilizes both in-situ reaction compatibilization and melt spinning methods. Background technique [0002] In modern society, human beings are more and more dependent on petroleum, but with the exploitation, refining, storage, transportation and use of petroleum, various waste water and waste liquid containing oily organic liquids such as petroleum products have seriously affected the ecological environment , especially the harm to the environment caused by the leakage of organic compounds in petrochemical enterprises has attracted great attention. In 2010, the serious oil spills in the Gulf of Mexico in the United States and Dalian in China brought catastrophic damage to the relevant waters, and also The oil spill treatment technology and materials pose a...

AI Technical Summary

Problems solved by technology

This kind of material modification method that kills two birds with one stone seems very tempting, but in the research process, it was found that directly blending polypropylene and linear methacrylate polymers for spinning, due to thermodynamic incompatibility, resulting in the finished fiber The two polymers will undergo phase separation, one of which is the continuous phase, and the other polymer is dispersed in the continuous phase in the form of spheres or rods to form a dispersed phase. This structure makes the blend fiber Extremely poor mechanical properties

In addition, when the polypropylene content is high, that is, when it is the continuous phase, since the linear methacrylate polymer is wrapped in the fiber by polypropylene, the blended fiber almost loses its adsorption function, while when the linear methacrylate When the polymer content is high, that is, when it is a continuous phase, because polypropylene exists in a dispersed state, it is difficult to support the main structure of the fiber, and the methacrylate polymer has a linear structure, so it is difficult to combine with organic In the process of liquid contact, the main structure of the fiber is easily damaged by the organic liquid, but soluble in the organic liquid, this fiber still does not have the function of absorbing the organic liquid