Test method and apparatus for rheological behavior of polymer composite material

A technology for composite materials and rheological properties, applied in the field of testing methods and devices for rheological properties of polymer composite materials based on multifunctional and all-electric methods, can solve the problem of not realizing the integrated design of polymer composite materials and the inability to accurately control polymers Composite material rheological test process, wide material adaptability and other issues

Active Publication Date: 2009-05-13
HUNAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned invention does not realize the integrated design of extrusion and injection of the polymer composite material, and cannot test the rheological behavior of the polymer material during the extrusion process and the injection process at the same time; the above-mentioned invention cannot accurately control the rheological test of the polymer composite material process, that is, the rheological properties of polymer composites under different processing conditions cannot be continuously and rapidly measured in a single experiment; the above-mentioned invention cannot measure the rheo

Method used

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  • Test method and apparatus for rheological behavior of polymer composite material
  • Test method and apparatus for rheological behavior of polymer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) choose figure 1 Extrusion rheological test device shown in the figure; (2) Weigh 50 grams of LDPE pellets and add them into the barrel; (3) Start the heating system to heat the barrel, and the temperatures of the three sections of the barrel are 180°C, 190°C, 190°C; (4) After 20 minutes of heat preservation, start the vibrator and the servo drive system to make the plunger rod move downward at a constant speed while vibrating. Set the vibration frequency to 10Hz and the amplitude to 0.2mm to make the plunger rod The vibration waveform is sinusoidal vibration; (5) Turn on the data acquisition system to collect signals such as temperature, pressure, displacement, speed, vibration parameters, etc.; (6) Replace the dies with different length-to-diameter ratios, and repeat steps (2) to (5) (7) Data post-processing to obtain data such as apparent viscosity and normal stress difference.

Embodiment 2

[0036] Change the vibration frequency and the amplitude in embodiment 1, all the other are the same;

Embodiment 3

[0038] The frequency of vibration and the amplitude in embodiment 1 are set to zero, and all the other are the same;

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Abstract

The invention relates to a method for testing polymer composite material rheological characteristic and a device thereof. The invention can measure the rheological actions of polymer composite material during an extrusion molding process, a capillary extrusion process and an injection molding process under the function of physical field enhancement and also can measure the rheological action of the polymer composite material when processing condition and parameter are changed according to a specific program. The invention uses a servo motor, a ball screw, an excitation system and a digital intelligent servo system to control the rheological testing process of the polymer composite material exactly, and the invention can measure the rheological characteristic of high polymer complex liquid continuously and fast under different processing conditions during the process of a single experiment. The invention can quench fused mass sharply during the testing process and then samples and studies the rheological characteristic of polymer fused mass intuitively. The invention has the high accuracy and stability of measurement data and the wide application range of material and is fit for macromolecular material, a macromolecule blending system, a macromolecule filling system, other similar macromolecular liquid systems, etc.

Description

technical field [0001] The invention relates to a method for testing the rheological properties of a polymer composite material and a device thereof, in particular to a method and a device for testing the rheological properties of a polymer composite material based on a multifunctional and all-electric type. Background technique [0002] The molding process of polymer blends or filled systems involves the complex fluid rheological behavior of polymers. To study the response mechanism and behavior of polymer complex fluids, how to precisely control their multi-level internal structure during processing, give full play to the performance potential of polymer blends or filling materials, and finally obtain a uniform and ideal structure, It is undoubtedly of great significance to rationally select forming process parameters, optimize the design of forming processing equipment, and realize high yield, high quality and low consumption. [0003] Polymer materials are a typical vis...

Claims

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Application Information

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IPC IPC(8): G01N11/04G01N33/44
Inventor 刘跃军黄宇刚曾广胜宋建李祥刚
Owner HUNAN UNIV OF TECH
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