Method for testing oil absorption volume of titanium dioxide

A test method, technology of titanium dioxide

Pending Publication Date: 2021-10-22
SICHUAN LOMON TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing method of testing the oil absorption of titanium dioxide takes a long time and the accuracy of the test is not high. This is because there are many factors that affect the accuracy of the test, such as the operator's force, the length of time, the judgment of the end point, and the quality of linseed oil. and other factors will affect the test results

Method used

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  • Method for testing oil absorption volume of titanium dioxide
  • Method for testing oil absorption volume of titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The viscosity values ​​of titanium dioxide samples 1, 2, 3, 4 and 5 with known oil absorption were measured by the following method.

[0027] Specific methods: 1. Accurately weigh 210g of refined linseed oil, pour it into a 500mL container, place the container on a high-speed disperser, fix it with a clamp, turn on the disperser at a speed of 500r / min, and preliminarily disperse the linseed oil; 2. Accurately weigh 140g of titanium dioxide sample with known oil absorption, slowly pour the titanium dioxide into the refined linseed oil with a spatula, the addition of titanium dioxide is completed within 1min; 3. Increase the speed of the disperser to 1500r / min, Time for 10 minutes; 4. After the dispersion is completed, remove the slurry and use a rotational viscometer to test its viscosity value. This step should be completed within 2 minutes.

[0028] The oil absorption and viscosity values ​​of samples 1-5 are shown in Table 1. According to the oil absorption and viscos...

Embodiment 2

[0033] Adopt the method in the embodiment 1 of the titanium dioxide sample B to be tested, measure its viscosity value, its viscosity value is 3900mPa·s, this viscosity value is brought into the relational formula that embodiment 1 obtains, obtains that its oil absorption is 19.332g / 100g.

Embodiment 3

[0035] Adopt the method in the embodiment 1 of the titanium dioxide sample C to be tested, measure its viscosity value, its viscosity value is 2470mPa·s, this viscosity value is brought into the relational formula that embodiment 1 obtains, obtains that its oil absorption is 16.135g / 100g.

[0036] The oil absorption of titanium dioxide samples A, B, and C were tested by the traditional kneading method, and the oil absorption values ​​obtained are shown in Table 2.

[0037] Table 2

[0038]

[0039] It can be seen from Table 2 that the oil absorption measured by the method of the present invention is close to the value obtained by the knife adjustment kneading method, and within the normal test error range, it can meet the test accuracy requirements of the titanium dioxide industry for the oil absorption index.

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Abstract

The invention belongs to the technical field of titanium dioxide production, and particularly discloses a method for testing the oil absorption volume of titanium dioxide, which comprises the following steps of: (1) mixing various titanium dioxide with known oil absorption volumes with refined linseed oil respectively, pulping and dispersing to obtain slurry, and testing the viscosity value of each kind of slurry; (2) according to the viscosity value and the oil absorption volume of each kind of slurry, fitting a relational expression of the viscosity value and the oil absorption volume; (3) testing the viscosity value of titanium dioxide to be tested under the same condition as that in the step (1); and (4) substituting the viscosity value of the titanium dioxide to be tested into the relational expression obtained in the step (2) to obtain the oil absorption volume of the titanium dioxide to be tested. According to the method, test errors caused by manual operation in the test process can be reduced, the test reproducibility is improved, the test time is shortened, and the test labor intensity is reduced.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide production, and in particular relates to a method for testing the oil absorption of titanium dioxide. Background technique [0002] At present, there are two main methods for testing the oil absorption of titanium dioxide: one is the knife-kneading method: weigh 10g of the titanium dioxide sample (accurate to 0.1g) and place it on a plate, add refined linseed oil dropwise with a burette, adding oil each time The amount should not exceed 10 drops. After the addition, grind it with a knife to make the oil penetrate into the test sample, and continue to add dropwise at this speed until the oil and the sample form a lump. From now on, after adding a drop, it needs to be fully ground with a spatula. When a paste with uniform consistency is formed, which is just not cracked or broken, and can adhere to the plate, it is the end point. Record the amount of fuel consumed, and all operations shoul...

Claims

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Application Information

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IPC IPC(8): G01N11/14
CPCG01N11/14
Inventor 陈冲吴彭森和奔流周春勇谢鑫伟刘不尽
Owner SICHUAN LOMON TITANIUM IND CO LTD
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