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Device for continuously preparing high-purity meta-position aramid fiber resin solution

A technology of resin solution and aramid fiber, which is applied in the field of polymer material production equipment and industrial continuous preparation of high-purity meta-aramid resin solution, which can solve the problem of high production cost and polym-phenylene isophthalamide polymerization Problems such as narrow molecular weight distribution and large engineering investment

Active Publication Date: 2016-11-09
吐鲁番市晶芳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can meet the mixing requirements of different stages of polymerization and solve the problem of difficult heat dissipation. The polym-phenylene isophthalamide polymer prepared by continuous production has a narrow molecular weight distribution and a stable logarithmic viscosity. More than / g, it can meet the continuous and stable spinning requirements of polym-phenylene isophthalamide fiber; because the HCl produced in the reaction process is severely corrosive to commonly used stainless steel (such as 304, 316, etc. stainless steel), in order to reduce the damage to the equipment Corrosion, it is better to use Hastelloy or titanium alloy to make the twin-screw polymerization reactor. The twin-screw polymerization reactor itself is difficult to process, the structure is complex, and the production cost is high. The price is very expensive and the project investment is large

Method used

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  • Device for continuously preparing high-purity meta-position aramid fiber resin solution
  • Device for continuously preparing high-purity meta-position aramid fiber resin solution
  • Device for continuously preparing high-purity meta-position aramid fiber resin solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022]The solid m-phenylenediamine (MPD) raw material is heated and melted at 80°C into a fluid liquid molten state, and placed in the m-phenylenediamine storage tank 2 for standby; the solid isophthaloyl dichloride (IPC) raw material is in Heating and melting at a temperature of 60°C into a liquid molten state with fluidity, and placing it in the isophthaloyl chloride storage tank 9 for standby; the N,N-dimethylacetamide (DMAc) in the solvent storage tank 1 has a water content of 80ppm, measured by the solvent delivery pump 3 and the solvent mass flowmeter 5, enters from an input port of the static mixer 7 at a flow rate of 401.69 mass parts per hour; m-phenylenediamine (MPD) in the m-phenylenediamine storage tank 2 The melt enters from another input port of the static mixer 7 at a flow rate of 27.29 parts by mass per hour after being metered by the m-phenylenediamine delivery pump 4 and the m-phenylenediamine mass flowmeter 6; the m-phenylenediamine coming out of the static m...

Embodiment 2

[0025] The solid m-phenylenediamine (MPD) raw material is heated and melted at 80°C into a fluid liquid molten state, and placed in the m-phenylenediamine storage tank 2 for standby; the solid isophthaloyl dichloride (IPC) raw material is in Heating and melting at a temperature of 60°C into a liquid molten state with fluidity, and placing it in the isophthaloyl chloride storage tank 9 for standby; the N,N-dimethylacetamide (DMAc) in the solvent storage tank 1 has a water content of 120ppm, measured by the solvent delivery pump 3 and the solvent mass flowmeter 5, enters from an input port of the static mixer 7 at a flow rate of 322.44 mass parts per hour; m-phenylenediamine (MPD) in the m-phenylenediamine storage tank 2 The melt enters from another input port of the static mixer 7 at a flow rate of 27.29 parts by mass per hour after being metered by the m-phenylenediamine delivery pump 4 and the m-phenylenediamine mass flowmeter 6; the m-phenylenediamine coming out of the static...

Embodiment 3

[0028] The solid m-phenylenediamine (MPD) raw material is heated and melted at 80°C into a fluid liquid molten state, and placed in the m-phenylenediamine storage tank 2 for standby; the solid isophthaloyl dichloride (IPC) raw material is in Heating and melting at a temperature of 60°C into a liquid molten state with fluidity, and placing it in the isophthaloyl chloride storage tank 9 for standby; the N,N-dimethylacetamide (DMAc) in the solvent storage tank 1 has a water content of 150ppm, measured by the solvent delivery pump 3 and the solvent mass flowmeter 5, enters from an input port of the static mixer 7 at a flow rate of 227.11 parts by mass per hour; m-phenylenediamine (MPD) in the m-phenylenediamine storage tank 2 The melt enters from another input port of the static mixer 7 at a flow rate of 27.29 parts by mass per hour after being metered by the m-phenylenediamine delivery pump 4 and the m-phenylenediamine mass flowmeter 6; the m-phenylenediamine coming out of the sta...

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Abstract

The invention relates to a device for continuously preparing a high-purity meta-position aramid fiber resin solution. The device comprises a solvent metering and conveying system, a metaphenylene diamine metering and conveying system, an isophthaloyl dichloride metrering and conveying system, a mixing system, two stages of series connection polymerization reactors and the like. The primary-stage polymerization reactor and the secondary-stage polymerization reactor are provided with different combined stirrers, and a mode of bottom feeding and upper side discharging is adopted to the primary-stage polymerization reactor and the secondary-stage polymerization reactor. A double-screw reactor and other devices in the prior art are avoided, the effects that the equipment investment cost is reduced and the reaction time is stabilized are achieved, and the prepared meta-position aramid fiber resin solution is uniform in viscosity and high in purity.

Description

technical field [0001] The utility model belongs to the field of chemical machinery and relates to polymer material production equipment. Specifically, it relates to a device suitable for industrial continuous preparation of high-purity meta-aramid resin solution. Background technique [0002] The scientific name of meta-aramid is poly-m-phenylene isophthalamide, also known as aramid 1313 in China. Meta-aramid is one of the fastest-growing varieties of high-performance fibers today, and it is a kind of fiber with excellent comprehensive performance. High-tech fibers are widely used in protective clothing, honeycomb structure materials, electrical insulating paper and high-temperature filter materials, and are important basic materials in the fields of aerospace, electronics, communications, environmental protection, petrochemicals, marine development and special clothing . [0003] A high-quality meta-aramid polymer is an important prerequisite for preparing high-quality m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/32D01D1/02
CPCC08G69/32D01D1/02
Inventor 刘岳新罗丹龚勇明罗建业胡艳君
Owner 吐鲁番市晶芳新材料科技有限公司
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