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A method and characterization method for accelerating the water absorption rate of zeolite porous powder materials

A technology of porous powder and zeolite, which is applied in suspension and porous material analysis, permeability/surface area analysis, measuring devices, etc. It can solve the problems of difficult weighing method and rapid characterization of water absorption rate of solid powder materials, so as to shorten water absorption saturation The time and measurement methods are simple and intuitive, and the effect of improving the efficiency of use

Active Publication Date: 2020-06-30
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, solid powder materials are different from bulk materials, and powder materials cannot be taken out after being put into water. Therefore, the existing weighing method is difficult to quickly characterize the water absorption rate of solid powder materials, and it is necessary to find a simple and feasible characterization method.

Method used

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  • A method and characterization method for accelerating the water absorption rate of zeolite porous powder materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 150g of zeolite powder and 100g of water, first pour the water into the measuring cylinder of the rheometer, then weigh 5g of surfactant and pour it into the water, finally pour the zeolite powder into the measuring cylinder, stir quickly with a stirring rod for 5s, and then put the measuring The cylinder was placed on the rheometer, and the blades of the rheometer rotated at 30 rpm, and the torque inflection point appeared at 17 minutes after the start of the test. The saturated water absorption of the zeolite powder is about 26%.

Embodiment 2

[0020] Weigh 150g of zeolite powder and 100g of water, first pour the water into the measuring cylinder of the rheometer, then pour the zeolite powder into the measuring cylinder, stir rapidly with a stirring rod for 5s, then place the measuring cylinder on the rheometer, the rheometer The paddle rotates at 30rpm, and the torque inflection point occurs at 25 minutes after the test is started.

Embodiment 3

[0022] Weigh 150g of zeolite powder and 80g of water, first pour the water into the measuring cylinder of the rheometer, and finally pour the zeolite powder into the measuring cylinder, stir quickly with a stirring rod for 5s, then place the measuring cylinder on the rheometer, and the rheometer The paddle rotates at 30rpm, and the torque inflection point occurs at 25 minutes after the test is started.

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Abstract

The invention relates to an acceleration method for the water absorption rate of a porous zeolite powder, and a simple and feasible characterization method for the water absorption rate. The acceleration method for the water absorption rate of the porous zeolite powder uses a silicon polyether surfactant. The characterization method for the water saturation of the porous powder adopts a rheometerto detect the change of the torque of the porous powder with time after water addition, and the water absorption of the porous powder material is considered as saturation when the torque has a significant inflection point. The addition of the silicon polyether surfactant can shorten the time from water absorption to saturation of the porous zeolite powder material, so the practical application efficiency is improved. The characterization method for the water saturation of the porous powder has the advantages of strong operability, convenience for standardization and strong reproducibility, andcan be used for detecting the liquid absorption rate and its technical index of the porous powder.

Description

technical field [0001] The invention belongs to the technical field of water-absorbing materials, and relates to a method for accelerating the water-absorbing rate of zeolite porous powder materials and a simple and feasible characterization method for water-absorbing saturation of powder materials. Background technique [0002] Porous powders are widely used in industry and life because of their strong adsorption, moisture absorption and filtration properties. Taking zeolite powder as an example, zeolite is an aluminosilicate mineral with a water frame structure, which was first discovered in 1756. Cronstedt, a Swedish mineralogist, discovered that a type of natural aluminosilicate ore would boil when burned, so it was named zeolite (Swedish: zeolit). The water content of zeolite is related to the external temperature and the pressure of water vapor. When heated, the water can escape slowly, but it does not destroy its crystal structure. The crystal structure has many cav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 张君丁小平
Owner TSINGHUA UNIV