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Method for measuring isostatic pressure resistance of hollow glass beads

A technology of hollow glass microbeads and measuring method, which is applied in the direction of using stable tension/pressure test material strength, measuring device, specific gravity measurement, etc., can solve the problems of deviation of test results and high test results, and avoid corrosion. , High test accuracy and the effect of reducing errors

Inactive Publication Date: 2014-07-30
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for measuring the isostatic strength of hollow glass microspheres in order to overcome the defects that the test results of the water isostatic method are relatively high and the test results of the ordinary air pressure method are biased in the prior art.

Method used

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  • Method for measuring isostatic pressure resistance of hollow glass beads
  • Method for measuring isostatic pressure resistance of hollow glass beads
  • Method for measuring isostatic pressure resistance of hollow glass beads

Examples

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Embodiment 1

[0052] The hollow glass microsphere samples of the same batch were selected, and the samples were baked until dry for use. Take out 1.5g hollow glass microsphere sample (apparent particle density is at 0.10-0.20g / cm 3 between) into the sample compartment of the true density tester, and use the true density tester to measure the density ρ of the sample 1 0.14g / cm 3 . Take out 25g hollow glass microsphere sample, grind three times with a corundum mortar, grind for 20 minutes each time, fully pulverize the sample, use a true density tester to measure the density ρ of the ground sample g 2.47g / cm 3 . Take out 1.5g hollow glass microsphere sample and put it into a specific sample cell. Increase the pressure for 1 minute to the isostatic pressure of 2MPa, open the pressure relief valve immediately, and after returning to normal pressure, open the high-pressure test chamber, take out the sample pool, take the compressed sample out of the sample pool, and use a true density teste...

Embodiment 2

[0056] The hollow glass microsphere samples of the same batch were selected, and the samples were baked until dry for use. Take out 1.5g hollow glass microsphere sample (apparent particle density is at 0.10-0.20g / cm 3 between) into the sample compartment of the true density tester, and use the true density tester to measure the density ρ of the sample 1 0.16g / cm 3 . Take out 25g of hollow glass microsphere samples, mechanically crush them three times with a pressure of 50 MPa, keep the pressure for 10 minutes each time, fully pulverize the samples, and use a true density tester to measure the density ρ of the crushed samples g 2.50g / cm 3 . Take out 1.5g hollow glass microsphere sample and put it into a specific sample cell. Boost the pressure for 2 minutes to the isostatic pressure of 5MPa, maintain the pressure of 5MPa for 1 minute, open the pressure relief valve, after returning to normal pressure, open the high pressure test chamber, take out the sample pool, take the ...

Embodiment 3

[0058] The hollow glass microsphere samples of the same batch were selected, and the samples were baked until dry for use. Take out 2.0g hollow glass microsphere sample (apparent particle density is at 0.20-0.30g / cm 3 between) into the sample compartment of the true density tester, and use the true density tester to measure the density ρ of the sample 1 0.25g / cm 3 . Take out 25g hollow glass microsphere sample, grind three times with a ceramic mortar, grind for 30 minutes each time, fully pulverize the sample, use the true density tester to measure the density ρ of the sample after grinding g 2.48g / cm 3 . Take out 2.0g of hollow glass microsphere samples and put them into a specific sample cell. The volume is subject to the loosely filled sample cell. Put the sample cell into a specific high-pressure test chamber, close the high-pressure test chamber, and use a booster to introduce argon gas , boost the pressure for 5 minutes to isostatic pressure of 10MPa, maintain the p...

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Abstract

The invention belongs to the technical field of isostatic pressure, and particularly relates to a method for measuring the isostatic pressure resistance of hollow glass beads. The method comprises the following steps: effectively detecting the isostatic pressure resistance of the hollow glass beads directly by an air pressure method, selecting hollow glass bead samples of the same batch, and drying the samples for later use; measuring the apparent particle density rho1 of initial samples; measuring the apparent particle density rhog of hollow glass bead spherical shells; measuring the apparent particle density rhop of samples to which isostatic pressure with intensity P is applied; calculating the breakage rate NP of the hollow glass beads under certain isostatic pressure intensity P according to the formula, wherein results are expressed in percentage (%). The method can be used for obtaining accurate results, is simple and convenient, and is easy to operate. A judgment basis is laid for judging the isostatic pressure resistance of the hollow glass beads in the hollow glass bead industry.

Description

technical field [0001] The invention belongs to the technical field of isostatic pressing, in particular to a method for measuring the strength of hollow glass microspheres against isostatic pressing. Background technique [0002] Hollow glass microspheres are small, spherical, unique and stable hollow glass spheres. They are inorganic non-metallic materials with light weight, high strength, heat insulation, sound insulation, good electrical insulation, high and low temperature resistance, and wear resistance. , corrosion resistance and other excellent properties, its apparent particle density is generally 0.1-0.7g / cm 3 , ranging in size from a few micrometers to hundreds of micrometers. Hollow glass microspheres can be used as fillers in various composite organic resins, used in thermal insulation fields such as building materials and coatings, and can also be used as special functional materials, such as radiation shielding materials for aerospace, pipelines for transport...

Claims

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Application Information

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IPC IPC(8): G01N3/10G01N9/02
Inventor 张敬杰李冰严开祺宋广智
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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