Equipment for extruding/injecting polymer nano-composite through water-assisted mixing and realization method of equipment

A nano-composite material, mixing and extrusion technology, applied in the direction of coating, etc., can solve the problems of uniform dispersion of difficult nanoparticles, unfriendly environment, low efficiency, etc., and achieve the effects of stable production process, easy promotion and application, and simple operation

Active Publication Date: 2014-04-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is difficult to uniformly disperse the nanoparticles in the polymer matrix
Surface treatment of nanoparticles through chemical modification, or adding compatibilizers during the mixing process of polymers and nanoparticles, or pre-preparing polymer nanocomposite masterbatches, etc., can improve the comprehensive performance of polymer nanocomposites. However, it leads to disadvantages such as low efficiency and unfriendly environment

Method used

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  • Equipment for extruding/injecting polymer nano-composite through water-assisted mixing and realization method of equipment
  • Equipment for extruding/injecting polymer nano-composite through water-assisted mixing and realization method of equipment
  • Equipment for extruding/injecting polymer nano-composite through water-assisted mixing and realization method of equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 The equipment for water-assisted mixing and extruding polymer nanocomposites of the present invention is shown, including extruder A 1 , water-based nano-particle suspension injection device B and the water vapor formed after the water vaporization in the water-based nano-particle suspension is discharged from the vacuum pump 11 of the extruder barrel 13; water-based nano-particle suspension injection device B and Vacuum pump 11 along extruder A 1 The extrusion direction is connected with the extruder barrel 13 in turn.

[0037] The water-based nanoparticle suspension injection device B includes a liquid storage cylinder 1, a valve switch 3, a high-pressure metering pump 4, a reversing valve 5, an overflow valve 6, a first pressure gauge 7, a throttle valve 8, and a second pressure gauge connected in sequence. Pressure gauge 9 and electric ball valve 10; Electric ball valve 10 is connected with extruder barrel 13 by thread. The pressure and flow rate of the ...

Embodiment 2

[0042] figure 2 An apparatus for water-assisted mixing injection-molded polymer nanocomposites according to the present invention is shown, including injection molding machine A 2 , injection mold D, water-based nano-particle suspension injection device B, and mold cavity gas back-pressure device C that provides and discharges back-pressure gas into the injection mold cavity; water-based nano-particle suspension injection device B and injection molding machine The cylinder 16 is connected; the mold cavity gas back pressure device C is connected with the injection mold D.

[0043] The water-based nanoparticle suspension injection device B includes a liquid storage tank 1 for storing the water-based nanoparticle suspension, a valve switch 3, a high-pressure metering pump 4, a reversing valve 5, an overflow valve 6, and a first pressure gauge 7 connected in sequence , throttle valve 8, second pressure gauge 9 and electric ball valve 10; The pressure and flow rate of the water-...

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Abstract

The invention provides equipment for extruding/molding a polymer nano-composite through water-assisted mixing. The equipment for extruding/molding the polymer nano-composite through the water-assisted mixing comprises an extruder, a water-based nano particle suspension injection device and an exhausting device which is capable of discharging vapor formed after vaporization of a water-based nano particle suspension from a machine cylinder of the extruder; the equipment for extruding/molding the polymer nano-composite through the water-assisted mixing comprises an injection molding machine, an injection molding mould, a water-based nano particle suspension injection device and a mould cavity gas back-pressure device which is capable of supplying back-pressure gas into a cavity of the injection molding mould and discharging the back-pressure gas. The invention further provides a method for extruding and molding the polymer nano-composite through the water-assisted mixing. The equipment and the method provided by the invention can be used for uniformly dispersing nano particles into a polymer matrix, have the advantages of low cost, compact structure, simplicity and convenience in operation, and are applicable to industrial application.

Description

technical field [0001] The invention relates to polymer processing equipment, in particular to water-assisted mixing extrusion / injection molding polymer nanocomposite equipment and a realization method. Background technique [0002] Polymer-based nanocomposites have high strength, modulus and heat resistance, as well as excellent flame retardancy and permeation resistance, and have been used in industrial fields such as aviation, aerospace, automobiles and packaging. The comprehensive properties of polymer nanocomposites depend on many aspects, and realizing the uniform dispersion of nanoparticles in the polymer matrix is ​​the key to prepare polymer nanocomposites with excellent comprehensive properties. [0003] The methods for preparing polymer nanocomposites mainly include in-situ intercalation polymerization, solution intercalation and melt intercalation. The first two methods can better realize the dispersion of nanoparticles in the polymer matrix, but the disadvantag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/00B29C45/00B29C47/00
CPCB29C45/0001B29C45/34B29C48/762B29C48/767B29C69/02
Inventor 黄汉雄肖成龙钟亚琳汪斌
Owner SOUTH CHINA UNIV OF TECH
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