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A method for testing the surface free energy of fillers for polymers

A polymer, free technology, applied in measurement devices, material separation, analysis of materials, etc., can solve the problems of poor light transmission, cumbersome operation, unable to reflect the properties of fillers in many aspects, and achieve accurate and stable results and accurate test results. Effect

Active Publication Date: 2018-04-20
青岛黑猫新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is no detailed research on the surface activity of inorganic fillers and organic fillers. The previous method of measuring surface free energy also has the disadvantages of cumbersome operation and poor repeatability, and the obtained data is single, which cannot reflect the properties of fillers in many ways.
Especially for carbon black with poor light transmission and difficult gasification, it is particularly difficult to test the surface activity of carbon black

Method used

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  • A method for testing the surface free energy of fillers for polymers
  • A method for testing the surface free energy of fillers for polymers
  • A method for testing the surface free energy of fillers for polymers

Examples

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Embodiment 1

[0044] A method for testing polymer surface free energy for fillers, comprising the following steps:

[0045] (1) The granular filler to be tested is 60-80 mesh, and the powdery filler is used directly. Put the filler sample to be tested in an oven and dry at 125°C for 1 hour. After drying, put it into a packed column and fill the column. Stainless steel is used, and the empty packed column is purified before filling, and then an appropriate amount of filler is weighed and filled into the packed column; for granular fillers, especially carbon black, the particles are not uniform, and if the column is directly filled, it will cause compactness Inhomogeneity increases test error.

[0046] (2) Aging the packed column obtained in step (1), the aging needs to be carried out under a nitrogen environment, the temperature is controlled at 130°C, and the aging is 10 hours; usually, the temperature of the inorganic filler is aged at a temperature higher than 180°C, but the inventor of t...

Embodiment 2

[0073] The parts of this embodiment that are the same as those of Embodiment 1 will not be described again, the difference is that the aging temperature is 140°C.

Embodiment 3

[0075] The parts of this embodiment that are the same as those in Embodiment 1 will not be repeated, except that the aging temperature is 150°C.

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Abstract

The invention discloses a method for testing surface free energy of polymer packing. The method comprises the following steps that 1, a packing sample to be tested is dried and then filled into a packed column; 2, the packed column obtained in the step 1 is aged; 3, parameters are set, a gas chromatograph testing system is started, mixed liquor of nonpolar probe molecules and polar probe molecules are injected, and the retention time of the nonpolar probe molecules and the retention time of the polar probe molecules are obtained through testing; 4, calculation is performed. The testing method is suitable for multiple kinds of inorganic packing, and the tested result is accurate, stable and reliable.

Description

technical field [0001] The invention relates to the technical field of testing the surface free energy of inorganic fillers, in particular to a method for testing the surface free energy of polymer fillers. Background technique [0002] Filler is one of the main raw materials in the polymer industry, which can endow the polymer with many excellent properties, such as making non-self-reinforcing rubber have practical value. The fillers used in the rubber industry mainly include carbon black, white carbon black, calcium carbonate, kaolin , Montmorillonite, clay, mica powder, talcum powder, etc. [0003] The surface free energy of the filler affects its adsorption, binding and dispersibility with the polymer, and plays a vital role in the processing performance and finished product performance of the polymer system. Strong, which in turn affects the physical and mechanical properties and dynamic mechanical properties of the polymer product, where the surface free energy of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/025
Inventor 王宏周海妮周敏建王利杰邹玉荣
Owner 青岛黑猫新材料研究院有限公司
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