CN110018082B

CN110018082B - Method for detecting specific gravity of hollow glass beads

Info

Publication number: CN110018082B
Application number: CN201910372256.8A
Authority: CN
Inventors: 彭寿; 倪晶晶; 王友乐; 张治民
Original assignee: CNBM Bengbu Design and Research Institute for Glass Industry Co Ltd
Current assignee: CNBM Bengbu Design and Research Institute for Glass Industry Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2022-02-18
Anticipated expiration: 2039-05-06
Also published as: CN110018082A

Abstract

The invention provides a method for detecting the specific gravity of hollow glass microspheres, which comprises the steps of firstly carrying out a detection step to obtain various required numerical values, then substituting the various numerical values obtained by detection into a calculation step, and obtaining the specific gravity of the hollow glass microspheres through the calculation of the calculation step. The invention has the characteristics of practical and quick detection method, wide detection range, low detection cost and the like.

Description

Method for detecting specific gravity of hollow glass beads

The technical field is as follows:

the invention relates to a method for detecting specific gravity, in particular to a method for detecting the specific gravity of hollow glass microspheres.

Background art:

the hollow glass microspheres are hollow, tiny and vitreous spheres with the specific gravity of 0.2-1.2 g/cm³The powder has the diameter of 10-250 mu m, has the characteristics of light specific gravity, good dispersibility, insolubility in water, high compressive strength, high melting point, high resistivity, low thermal conductivity, small thermal shrinkage coefficient and the like, is milky white powder, and is widely used for artificial light materials.

The plum-type pycnometer is a commonly used specific gravity detection device, and is characterized by that it utilizes liquid discharge method to measure volume occupied by insoluble powder, and utilizes the weight of powder to obtain specific gravity of the powder, and the commonly used detection liquid is pure water, kerosene, etc. This method is applicable in view of its principle, when the powder is to be completely immersed in the liquid, i.e., the specific gravity of the powder is greater than that of the liquid. Because the hollow glass beads have light specific gravity, liquid required for detection is difficult to find, and the volume occupied by the hollow glass beads cannot be detected by directly using a liquid discharge method. Although the prior art also has a specific gravity detector, the measurement result of the specific gravity detector on the hollow glass beads is not accurate enough.

The invention content is as follows:

the invention provides a method for detecting the specific gravity of hollow glass microspheres in order to overcome the defects in the prior art.

The application provides the following technical scheme:

a method for detecting the specific gravity of hollow glass beads is characterized by comprising the following steps: the method comprises a detection step and a calculation step, wherein the detection step comprises the following steps:

step 1: weighing hollow glass beads to be detected to obtain the weight W of the weighed hollow glass beads, preparing a glass test tube with volume scale marks, measuring the inner diameter of the glass test tube, and calculating the inner sectional area M of the glass test tube;

step 2: adding a certain amount of liquid into the glass test tube, and recording the liquid level height of the liquid in the glass test tube, namely, the liquid level height value S0 is low;

and step 3: slowly adding the weighed hollow glass beads into a glass test tube filled with liquid, wherein the hollow glass beads are partially immersed into the liquid and still partially positioned above the liquid level;

and 4, step 4: shaking the glass test tube to ensure that the hollow glass beads are vertically and uniformly distributed along the density of the test tube;

and 5: recording the height of the floating position of the hollow glass bead, namely a high bead height value W1, recording the new height increased by the liquid level, namely a high liquid level height value S1, and recording the position of the hollow glass bead submerged in water, namely a low bead height value W0;

the calculating step comprises: w x (S1-W0)/(W1-W0)/(S1-S0)/M, and the specific gravity of the hollow glass beads submerged in water, that is, the specific gravity of the hollow glass beads to be detected.

On the basis of the technical scheme, the following further technical scheme can be provided:

the liquid in the step 2 is water or kerosene.

The invention has the advantages that:

the invention has the characteristics of practical and quick detection method, wide detection range, low detection cost and the like.

Description of the drawings:

FIG. 1 is a schematic view of a glass test tube after water is added thereto;

FIG. 2 is a schematic view of the glass test tube of FIG. 1 after the addition of hollow glass microspheres.

The specific implementation mode is as follows:

as shown in fig. 1 and 2, a method for detecting the specific gravity of hollow glass beads is characterized in that: the method comprises a detection step and a calculation step, wherein the detection step comprises;

step 1: weighing the hollow glass bead 2 to be detected to obtain the weight W of the weighed hollow glass bead 2, preparing a glass test tube 1 with volume scale marks 1a, measuring the inner diameter of the glass test tube, and calculating the inner sectional area M. The scale marks 1a are distributed along the axial direction of the glass test tube 1 and are used for measuring the volume of liquid poured into the glass test tube.

Step 2: adding a certain amount of water 3 into the glass test tube, and recording the height of the water level in the glass test tube 1 to obtain a low water level height value S0.

And step 3: slowly adding the weighed hollow glass beads 2 into the glass test tube 1 filled with water completely to avoid the hollow glass beads 2 which are unnecessarily contacted with the water 3 from contacting the water 3, so as to improve the detection precision; under the combined influence of the self weight, the self specific gravity and the restriction of the glass test tube wall, the hollow glass beads 2 are partially immersed in the water, but are still partially positioned above the water surface.

And 4, step 4: and (3) shaking the glass test tube 1 to reduce the gap between the hollow glass beads 2, so that the hollow glass beads 2 are vertically and uniformly distributed along the glass test tube 1.

And 5: recording the height of the hollow glass bead 2 floating in the glass test tube 1, namely a high bead height value W1; the hollow glass beads 2 are partially immersed in the water 3, so that the water level in the glass test tube 1 also rises, and the new height increased by the water level is recorded, namely a high water level height value S1; since the hollow glass microspheres 2 have a light specific gravity, the hollow glass microspheres 2 submerged in the water 3 are suspended only in the upper layer of the water 3, and the positions of the hollow glass microspheres 2 submerged in the water, i.e., the low bead height value W0, are recorded.

Since the hollow glass beads are vertically and uniformly distributed along the glass test tube by the step 4, the weight of the hollow glass beads per unit scale interval on the glass test tube 1 is the resulting value of W/(W1-W0).

The weight of the hollow glass microspheres immersed in water was W x (S1-W0)/(W1-W0) when the proportions were divided.

The volume of the water level increase is the value obtained by immersing the hollow glass beads in water to the volume of (S1-S0). times.M.

The calculation step is to obtain W x (S1-W0)/(W1-W0)/(S1-S0)/M by the derivation, and the obtained specific gravity of the hollow glass microsphere submerged in water, namely the specific gravity of the hollow glass microsphere to be detected.

Claims

1. A method for detecting the specific gravity of hollow glass beads is characterized by comprising the following steps: the method comprises a detection step and a calculation step, wherein the detection step comprises the following steps:

step 1: weighing hollow glass microspheres to be detected to obtain the weight W of the weighed hollow glass microspheres, preparing a glass test tube with volume scale marks, measuring the inner diameter of the glass test tube, and calculating the inner sectional area M of the glass test tube;

step 2: adding a certain amount of liquid into the glass test tube, and recording the liquid level height of the liquid in the glass test tube, namely a low liquid level height value S0;

and 5: recording the height of the floating position of the hollow glass microspheres, namely a high bead height value W1, recording the new height increased by the liquid level, namely a high liquid level height value S1, and recording the position of the hollow glass microspheres immersed in the liquid, namely a low bead height value W0;

the calculating step comprises: w × (S1-W0)/(W1-W0)/(S1-S0)/M, which is the specific gravity of the hollow glass beads submerged in the liquid, i.e., the specific gravity of the hollow glass beads to be detected.

2. The method for detecting the specific gravity of the hollow glass microsphere according to claim 1, which is characterized in that: the liquid in the step 2 is water or kerosene.