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A kind of determination method and application of filler surface polarity

A technology of surface polarity and measurement method, which is applied in the direction of surface/boundary effects, measuring devices, analysis materials, etc., and can solve problems such as difficult determination of surface polarity and complex chemical structure

Active Publication Date: 2019-07-02
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the surface polarity of the filler is difficult to measure due to the complex chemical structure of the surface of the filler, the present invention provides a method for measuring the polarity of the filler surface. The filler is dispersed in different types of organic solvents, and the filler is observed and recorded in each Dispersion state in solvent, calculation of surface polarity of filler

Method used

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  • A kind of determination method and application of filler surface polarity
  • A kind of determination method and application of filler surface polarity
  • A kind of determination method and application of filler surface polarity

Examples

Experimental program
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Embodiment 1

[0030] A method for measuring the surface polarity of carbon black fillers is to first select 21 volumetric flasks with a capacity of 10mL, and then add 10mL of different types of organic solvents to each volumetric flask (each volumetric flask adds a solvent); Add 1 mg of carbon black (N330 as an example) to each volumetric flask and seal it to prevent solvent volatilization. The organic solvent and its relative polarity (characterized by the solubility parameter value of the solvent) are shown in Table 1.

[0031] The volumetric flask filled with carbon black (N330) and solvent was ultrasonically dispersed for 3h, and the ultrasonic frequency was 30kHz, and then it was quickly placed on the experimental bench to observe and record the dispersion of carbon black in each solvent, and divide them into 6 A dispersion level, "6" means that the filler is best dispersed in a certain solvent (no agglomeration within three months), such as figure 1 In A; "1" means that the filler is...

Embodiment 2

[0036] A method for measuring the surface polarity of white carbon black fillers, selecting 21 volumetric flasks with a capacity of 10mL, and then adding 10mL of the different types of organic solvents described in each volumetric flask (each volumetric flask adds a solvent) ; Add 1 mg of white carbon black (with Vulkasil N as an example) respectively in each volumetric flask and seal to prevent solvent volatilization. The organic solvent and its relative polarity (characterized by the solubility parameter value of the solvent) are shown in Table 2.

[0037] Ultrasonic disperse the volumetric flask containing white carbon black (Vulkasil N) and solvent for 3 hours, then quickly put it on the experimental bench, observe and record the dispersion of white carbon black in each solvent, and divide them into 6 Dispersion grade, "6" means that the filler is best dispersed in a certain solvent (no agglomeration within three months), and "1" means that the filler is the worst disperse...

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Abstract

The invention discloses a measurement method for the surface polarity of a filling material and application. The measurement method comprises the following steps of 1), selecting multiple organic solvents, numbering the organic solvents, putting the organic solvents in containers of corresponding numbers respectively, adding the filling material into each container respectively, and sealing the containers to prevent the solvents from volatilizing; 2), carrying out ultrasonic dispersion treatment on the containers in which the filling material and the organic solvents are held, then quickly standing the containers on a platform, observing and recording the dispersion condition of the filling material in each solvent, and separating the dispersion conditions of the filling material in the different solvents into multiple dispersion classes, wherein a highest class represents that the filling material is best dispersed in some solvent, and a lowest class represents that the filling material is poorest dispersed in another some solvent; 3), drawing by using the relative polarities of the multiple solvents are horizontal ordinates and by using the dispersion classes as longitudinal coordinates, and fitting a curve, wherein the highest point of the curve is the surface polarity of the filling material.

Description

technical field [0001] The invention relates to the field of filler testing, in particular to a method for measuring the surface polarity of a rubber filler and its application. Background technique [0002] Carbon black or white carbon black is an essential filler in rubber industrial products. They are mainly used as rubber reinforcing agents, which can endow rubber composites with many excellent properties, such as the physical and mechanical properties of rubber (tensile strength, tear strength , wear resistance, etc.), dynamic mechanical properties are improved, the processing performance of rubber is improved, and non-self-reinforcing rubber is reinforced. Secondly, as fillers for rubber, they can reduce the cost of rubber products. Therefore, carbon black or white carbon black is an indispensable reinforcing filler for the rubber industry. [0003] The particle size of carbon black or white carbon black fillers are all nano-scale, with high specific surface area, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00
CPCG01N13/00
Inventor 刘广永邱桂学刘苏苏夏琳
Owner QINGDAO UNIV OF SCI & TECH