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Small micro high-temperature mixing extrusion vertical testing machine

A technology of high-temperature mixing and testing machines, applied in the direction of material inspection products, etc., can solve the problems of large equipment, high processing temperature, and large consumption of raw materials, and achieve the effects of high automation, high working temperature, and compact structure

Inactive Publication Date: 2010-02-17
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the unique characteristics of such materials, such as high melting temperature, high viscosity, and high price, there are special requirements for their experimental research equipment. However, existing processing equipment such as polymer melt mixing, extrusion, and molding generally have insufficient processing temperature, The disadvantages of large equipment, high price, and large consumption of raw materials limit the research on the melt blending modification, processing and molding of these special polymer materials to some extent.
At present, there is no small-scale extrusion equipment suitable for the experimental research of this kind of special high-temperature-resistant polymer materials at home and abroad, especially the small-scale high-temperature extrusion equipment that consumes less raw materials, high processing temperature (≤450°C), and integrates melting-mixing-extrusion. Extrusion test machine

Method used

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  • Small micro high-temperature mixing extrusion vertical testing machine
  • Small micro high-temperature mixing extrusion vertical testing machine
  • Small micro high-temperature mixing extrusion vertical testing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Turn on the power of the main machine, connect the cooling water system and heating system, and set the operating temperature to 350°C / 370°C / 340°C (from the feeding port to the machine head) in sequence. Speed ​​the motor until the rotating speed is 50rpm, slowly add the polyimide / polyetheretherketone mixture (the mass fraction of polyimide is 60wt%) into the hopper, and the material is compacted, plasticized, melted and mixed in the barrel, and then passed through the machine The head is extruded, and the extrudate spline is finally obtained. After the experiment is completed, adjust the speed control motor to 0rpm, pull out the screw, and clean the material, or directly use the cleaning material to extrude and clean the screw. After the operation is completed, turn off the heating system and the power supply of the main engine, and stop the cooling water after the whole machine cools down to room temperature.

Embodiment 2

[0013] Turn on the power of the main machine, connect the cooling water system and heating system, and set the operating temperature to 390°C / 420°C / 370°C (from the feeding port to the machine head) in sequence, wait for the temperature to rise to the operating temperature, then keep the temperature for 30 minutes, and turn on the regulator Speed ​​motor until the rotating speed is 40rpm, slowly add the nano-montmorillonite / thermoplastic polyimide mixture (the mass fraction of montmorillonite is 10wt%) into the hopper, and the material is compacted, plasticized, melt-mixed in the barrel and passed through the machine The head is extruded, and the extrudate spline is finally obtained. After the experiment is completed, adjust the speed of the speed regulating motor to 0rpm, pull out the screw to clean the material, or directly use the screw to clean the material to extrude the screw. After the operation is completed, turn off the heating system and the power supply of the main e...

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Abstract

The invention discloses a small micro high-temperature mixing extrusion vertical testing machine which is used for researching special micro high-temperature resistant macromolecule materials for laboratories and enterprises, is small testing equipment with the characteristics of high processing temperature, large torque, small volume, high control precision and the like and comprises a charging hopper, a small threaded rod, a machine cylinder, a heating sleeve, a machine head, a flange, a driving shaft, an oblique gear, a speed regulating motor, a control cabinet and the like. The charging hopper and the machine cylinder of the testing machine are connected by a thread screw and are positioned on a same axes; the small threaded rod and the machine cylinder are in vertical structures and the driving part is arranged on one end with largest root diameter of the threaded rod, i.e. the end part of the extrusion section of the threaded rod, thereby enabling the threaded rod to load the torque to the maximum. The threaded rod and the driving shaft of the testing machine are in plane contact by a slot, and the threaded rod stops rotating in the process of high-temperature melting mixingextrusion and is pulled out instantly. The testing machine is suitable for researching the micro melting mixing extrusion and the formation of all thermoplastic macromolecules, in particular special heat resistant macromolecule materials.

Description

technical field [0001] The invention relates to a chemical machinery, in particular to a small micro-quantity high-temperature mixing plasticizing extrusion vertical testing machine. Background technique [0002] Special high temperature resistant polymer materials such as thermoplastic polyimide, polytetrafluoroethylene, polyether ether ketone and ultra-high molecular weight polyethylene have excellent mechanical properties, high heat resistance, high wear resistance and other special properties, so they are It is widely used in high-tech fields, so it is one of the hot spots in the research of polymer materials. In view of the unique characteristics of such materials, such as high melting temperature, high viscosity, and high price, there are special requirements for their experimental research equipment. However, existing processing equipment such as polymer melt mixing, extrusion, and molding generally have insufficient processing temperature, The disadvantages of bulky...

Claims

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Application Information

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IPC IPC(8): G01N33/44B29C47/00B29C47/60B29C47/08B29C47/80
Inventor 詹茂盛梁海军王凯
Owner BEIHANG UNIV
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