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Technique method for preparing mother liquor of fullbodied aramid fiber III resin and preparation equipment

A production device and high-viscosity technology, applied in the field of preparing aramid III resin mother liquor, can solve the problems of few gel particles, high viscosity, poor heat transfer and mass transfer effects of polymerization equipment, etc., and achieve the effect of less gel particles

Inactive Publication Date: 2010-04-28
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: overcome the technical problems that the heat generated by the polymerization reaction is difficult to be effectively discharged in the synthesis process of the aramid fiber III resin, and the heat transfer and mass transfer effects of the polymerization equipment are poor, and provide a method that can effectively discharge the heat generated by the polymerization reaction and prepare a viscosity High, less gel particles, can be used to produce the processing method of the aramid fiber III qualified resin mother liquor of the qualified aramid fiber III fiber; Another purpose of the present invention is to provide a set of device system for producing this aramid fiber III qualified resin mother liquor

Method used

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  • Technique method for preparing mother liquor of fullbodied aramid fiber III resin and preparation equipment
  • Technique method for preparing mother liquor of fullbodied aramid fiber III resin and preparation equipment
  • Technique method for preparing mother liquor of fullbodied aramid fiber III resin and preparation equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Will M 3 Dissolve the monomer and p-phenylenediamine (PPDA) in N,N-dimethylacetamide (DMAC) solvent containing LiCl, lower the solution temperature to -5°C to 5°C, add part of terephthaloyl chloride, After the dynamic viscosity of the solution reaches 50-100Pa.S, it is transported to the polymerization reactor, and the remaining amount of terephthaloyl chloride is added, and the solution can be discharged after the dynamic viscosity of the solution reaches 500Pa.S. The raw material formula is as follows:

[0018] DMAC 1410g PPDA 11.25g

[0019] LiCI 51g TPC 42.2g

[0020] m 3 23.3g

[0021] use figure 2 The device shown is the synthetic resin mother liquor. When the pre-polymerization reactor adopts an ordinary polymerization reactor without an external forced circulation system, and when the polymerization reactor adopts an external forced circulation system, the properties of the prepared aramid III resin mother liquor and its fibers are shown in Table 1....

Embodiment 2

[0025] In the synthesis of Example 1, when both the pre-polymerization reactor 1 and the polymerization reactor 8 adopt an out-of-band forced circulation system, the properties of the prepared aramid III resin and its fibers are shown in Table 2.

[0026] Table 2 Properties of aramid III resin and its fibers

[0027]

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Abstract

A process for preparing high-viscosity aramid fibre C resin includes reaction between p-phenyldiamine, M3 monomer and part of p-phenyl diformly chloride in N, N diformylacetylamine in which lithium chloride is dissolved to obtain the mother liquid of prepolymer, and reaction between said mother liquid and rest of p-phenyl diformly chloride. Its apparatus is composed of prepolymerizing reactor, polymerizing reactor, delivery pump and pipelines. Its advantage is high hot mass transfer effect.

Description

technical field [0001] The present invention relates to a process for preparing aramid III resin mother liquor and a production device thereof, in particular to an aramid III qualified resin mother liquor for preparing aramid III fiber with high strength, high modulus and high temperature resistance The production process and its production equipment. Background technique [0002] Aramid III fiber is a high-strength, high-modulus, high-temperature-resistant organic fiber. Its tensile strength can reach 5.0GPa, its tensile modulus can reach 150GPa, and its decomposition temperature can reach 560°C. , tank composite armor, high-strength cables and other products of the main material. [0003] Aramid III is based on terephthaloyl chloride (TPC), p-phenylenediamine (PPDA) and benzimidazole diamine (referred to as M 3 Monomer) as raw material, in the presence of inorganic salts (such as CaCl 2 , LiCl) in a polar solvent (such as N,N-dimethylformamide, N,N-dimethylacetamide, N-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/00
Inventor 潘育英傅旭王凤德邱风彭涛刘向阳
Owner CHINA BLUESTAR CHENGRAND CO LTD
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