Method for manufacturing modified polyropylene fiber

A polypropylene fiber, manufacturing method technology, applied in chemical instruments and methods, conjugated synthetic polymer rayon, drawing spinning, etc. Poor, does not have the problems of adsorbing organic liquids, etc., to achieve the effect of improved grip, improved mechanical properties, and good compatibility

Active Publication Date: 2014-03-19
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthesis of methacrylate-based polymers: 1600ml of n-butyl methacrylate monomer and deionized water with a volume ratio of 3:1 to n-butyl methacrylate monomer were placed in different large containers, and then Weigh the dispersant polyvinyl alcohol accounting for 0.5wt% of the total mass of deionized water and the initiator benzoyl peroxide accounting for 0.5wt% of the total mass of monomers, and place the weighed dispersant and initiator in a 1000ml beaker respectively , Measure an appropriate amount of deionized water from a large container filled with deionized water, and add it to the above-mentioned 1000ml beaker containing the dispersant, heat and stir to fully dissolve the dispersant, then mix the aqueous solution of the dispersant and the remaining water in the large container Add deionized water into a 10L polymerization kettle, stir for 5 minutes to disperse the system evenly, then pour the initiator into the measured 1600ml polymerization monomer, stir with ...

Embodiment 2

[0041] Synthesis of methacrylate polymer: the same as in Example 1.

[0042] In-situ reaction compatibilization-melt spinning: Weigh 600g of the above polymer, and weigh 1400g of polypropylene pellets, and compound pellets in a twin-screw extruder, wherein the heating temperature of each section of the twin-screw extruder is: The first zone is 160°C, the second zone is 165°C, the third zone is 170°C, the fourth zone is 180°C, the fifth zone is 180°C, the sixth zone is 180°C, the temperature of the melt pump is 180°C, the temperature of the melt is 180°C, and the frequency of the main engine is 6.0Hz , Feeding frequency 5.5Hz, melt pump frequency 13.1Hz, after granulation, fully pulverize the blended polymer in a high-speed pulverizer, put it in a large airtight container, and measure an appropriate amount of β-hydroxyethyl methacrylate (accounting for 25wt% of the total mass of the blended polymer and β-hydroxyethyl methacrylate), and placing it in another large container, wei...

Embodiment 3

[0046] Synthesis of methacrylate polymer: the same as in Example 1.

[0047] In-situ reaction compatibilization-melt spinning: Weigh 1400g of the above polymer, and weigh 600g of polypropylene pellets, and compound pellets in a twin-screw extruder, wherein the heating temperature of each section of the twin-screw extruder is: The first zone is 160°C, the second zone is 165°C, the third zone is 170°C, the fourth zone is 180°C, the fifth zone is 180°C, the sixth zone is 180°C, the temperature of the melt pump is 180°C, the temperature of the melt is 180°C, and the frequency of the main engine is 6.0Hz , Feeding frequency 5.5Hz, melt pump frequency 13.1Hz, after granulation, fully pulverize the blended polymer in a high-speed pulverizer, put it in a large airtight container, and measure an appropriate amount of β-hydroxyethyl methacrylate (accounting for 40wt% of the total mass of the blended polymer and β-hydroxyethyl methacrylate), and placing it in another large container, wei...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/06D01F8/10C08F291/06C08F291/00C08F120/18C08F220/18D01D5/12D01D10/02B01J20/26B01J20/28B01J20/30
Inventor 徐乃库肖长发马肖赵健安树林
Owner TIANJIN POLYTECHNIC UNIV
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