Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Mixer for aramid II polymerization

A technology of mixer and aramid fiber, applied in the direction of single-component polyamide artificial filament, etc., can solve the problem of inability to continuously and stably produce high molecular weight resin

Active Publication Date: 2008-06-11
中蓝晨光化工有限公司
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the fact that there is no suitable mixing equipment at present so that the two reacted monomers can be continuously and stably mixed in a solvent and a co-solvent with the stoichiometric coefficient as the proportioning ratio and then enter the polymerization reactor, so that they cannot be continuously and stably mixed. The present situation of producing high-molecular-weight resins proposes a mixer for aramid II polymerization for mixing high-temperature difference materials to solve the above problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mixer for aramid II polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example refers to the solvent NMP-CaCl 2 The process of producing poly-p-phenylene terephthalamide resin.

[0026] dissolved in NMP-CaCl 2 The solution containing 4.5% to 8% p-phenylenediamine in the solution is cooled to the required temperature, and part of the terephthaloyl chloride in the molten state (accounting for 20% to 50% of the total demand) is sprayed into the above mixer (stirring The rod structure is type II), and the uniformly mixed mixture enters the prepolymer reactor in a short time (not higher than 1 second), and the prepolymer A solution generated after reacting for a certain period of time, cools the prepolymer After reaching a certain temperature, spray into the above-mentioned mixer with the terephthaloyl chloride (80%~50%) in the molten state of the remaining part (stirring rod structure is type III), stir and mix violently at the middle position of the mixer, The resulting mixture enters the first polymerization reactor after staying in t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a mixture for mixing materials with high temperature difference to polymerize aramid fiber II, which comprises a shell and a mixing chamber in the shell. The invention is characterized in that the mixing chamber is arranged with an internal mixing rod which top is connected with a mixing head, the shell is connected with two fluid channels communicated with the mixing chamber and an injection hole, and the lower end of the mixing shell is provided with an outlet. The invention can be used to continuously mix components at the ratio of stoichiometric coefficient, to meet different mixing demands of different materials. The invention can be used in the production of aramid fiber II, to continuously and stably produce poly-(p-phenyleneterephthalamide) resin.

Description

technical field [0001] The invention relates to a mixer for mixing materials with a high temperature difference, especially suitable for mixing materials where one or several materials are low temperature, and the other or several materials are high temperature or molten, and the initial instant mixing is required. In the present invention, the mixer is especially suitable for the production process of aramid fiber II. Background technique [0002] In 1935, Carothers, a scientist of DuPont Company of the United States, invented aliphatic polyamide fiber (that is, polyhexamethylene adipamide <nylon 66> fiber). Since then, it has opened up a new world for the application of polyamide fiber to industrial fields. Published remarkable high-performance poly-p-phenylene terephthalamide fiber in 2010, and its official trade name was Kevlar(R) (abbreviated as para-aramid fiber, aramid fiber 1414 and aramid fiber II in China). Because of its high strength, high modulus and high...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/32D01F6/60
Inventor 王凤德李兰英彭涛崔晓静邱锋
Owner 中蓝晨光化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com