CN113776985A - Adhesive density measuring device and measuring method - Google Patents
Adhesive density measuring device and measuring method Download PDFInfo
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- CN113776985A CN113776985A CN202111090116.5A CN202111090116A CN113776985A CN 113776985 A CN113776985 A CN 113776985A CN 202111090116 A CN202111090116 A CN 202111090116A CN 113776985 A CN113776985 A CN 113776985A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/08—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring buoyant force of solid materials by weighing both in air and in a liquid
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Abstract
The invention aims to provide an adhesive density measuring device and an adhesive density measuring method, which are used for measuring the density of an adhesive with higher viscosity so as to improve the measuring efficiency. The adhesive density measuring device comprises an electronic balance, a measuring bracket, a container bracket, a balancing weight and a suspension connecting piece for connecting the balancing weight and the upper part of the measuring bracket; the measuring bracket is placed on a tray of the electronic balance; the container support comprises a container tray located below the suspension connecting piece, and the container tray is provided with supporting legs which outwards span the electronic balance, so that the container tray can be suspended above the electronic balance. The device and the method for measuring the density of the adhesive utilize the drainage measurement principle, can realize the rapid detection of the density of the adhesive with irregular shape, save the detection time, reduce the waste and pollution of the adhesive, and are suitable for the detection of most automobile adhesives.
Description
Technical Field
The invention relates to a device and a method for measuring adhesive density.
Background
With the development of automobile manufacturing technology and the continuously improved performance requirements thereof, the adhesive is used as an important auxiliary material necessary for automobile production, and has increasingly complete varieties and increasingly wide application. The adhesive not only can play a role in reinforcing an automobile structure, fastening rust prevention, heat insulation and vibration reduction and internal and external decoration, but also can replace the traditional process methods of welding, riveting and the like of certain parts, so that the connection between the same or different materials is realized, the production process is simplified, and the effect of the product structure is optimized. In the aspects of light weight, energy conservation, consumption reduction, prolonged service life and improved performance of automobiles, the adhesive plays an increasingly important role, and necessary detection is required for ensuring the performance of the adhesive.
The density is an indispensable detection item of the adhesive, the common detection mode is to use a density cup method for detection, use a density cup with a certain volume to measure the mass of an empty cup and a filled adhesive, and obtain the density through simple measurement and calculation. When the density cup is used for testing the density of adhesives with high viscosity such as automobile adhesives, gas is easy to mix during sample loading, so that the test is inaccurate, in addition, the detection workload can be increased, the detection time is prolonged, and after the detection is finished, the cleaning work of the density cup is relatively troublesome, so that the detection efficiency is low.
Disclosure of Invention
The invention aims to provide an adhesive density measuring device and an adhesive density measuring method, which are used for measuring the density of an adhesive with higher viscosity so as to improve the measuring efficiency.
The adhesive density measuring device comprises an electronic balance, a measuring bracket, a container bracket, a balancing weight and a suspension connecting piece for connecting the balancing weight and the upper part of the measuring bracket; the measuring bracket is placed on a tray of the electronic balance; the container support comprises a container tray located below the suspension connecting piece, and the container tray is provided with supporting legs which outwards span the electronic balance, so that the container tray can be suspended above the electronic balance.
The adhesive density measuring method adopts the adhesive density measuring device, and specifically comprises the following steps:
A. placing a container filled with liquid with known density on a container tray, placing a balancing weight on a measuring bracket, and measuring a first mass m1 at the moment by using an electronic balance;
B. suspending the balancing weight on the measuring bracket by using a suspension connecting piece, immersing the balancing weight in the liquid in the container, and measuring a second mass m2 by using an electronic balance;
C. placing the balancing weight and the adhesive on a measuring bracket, and measuring a third mass m3 by using an electronic balance;
D. adhering an adhesive to the balancing weight, suspending the balancing weight on the measuring support by using a suspension connecting piece, so that the balancing weight and the adhesive are immersed in the liquid in the container below, and measuring the fourth mass m4 by using an electronic balance;
E. the density p of the adhesive is calculated according to the following formula,
the above rho0Is the density of the liquid.
Further, in the step D, after the adhesive is heated to an activated state, the adhesive is adhered to the balancing weight, and the adhesive can reach the maximum expansion limit and is consistent with the use state of the adhesive, so that the measurement accuracy is improved.
Further, in order to simplify the calculation process, the liquid is water having a density of 1 g/cc, and thus the calculation formula becomes
Specifically, the upper portion of measuring the support is installed and is measured the tray, is equipped with the couple that is used for being connected with the connector that suspends in midair below the measurement tray. In the step A, C, the weight and the adhesive can be placed on the measuring tray, and in the step B, D, the weight and the adhesive can be hung on the hook by using the hanging connector, so that the measurement is convenient.
The supporting legs of the container support are formed by connecting an inner horizontal rod and an outer vertical rod, the end part of the horizontal rod is fixedly connected with the container tray, and the height of the vertical rod is larger than that of the electronic balance. The horizontal rods extend outwards from the container tray and cross over the electronic balance, and the vertical rods support the container tray at a position higher than the electronic balance, so that the container tray can be suspended above the electronic balance.
Furthermore, in order to conveniently take down the adhesive from the balancing weight after the measurement is finished and avoid the influence on the accuracy of the next measurement caused by the fact that part of the adhesive is remained on the balancing weight, the balancing weight is a metal block with a smooth surface.
The device and the method for measuring the density of the adhesive utilize the drainage measurement principle, can realize the rapid detection of the density of the adhesive with irregular shape, save the detection time, reduce the waste and pollution of the adhesive, and are suitable for the detection of most automobile adhesives.
Drawings
Fig. 1 is a schematic view of the fitting structure of the measuring stand and the container stand in example 1.
Fig. 2 is a schematic structural view of the measurement holder in example 1.
Fig. 3 is a schematic structural view of the container holder in example 1.
Fig. 4, 5 and 6 are schematic diagrams of the measurement process in example 1.
The figures are numbered: 1. an electronic balance; 2. a measuring support; 21. a column; 22. a circular frame; 23. a measuring tray; 24. a support leg; 25. hooking; 3. a container holder; 31. a container tray; 32. a horizontal bar; 33. a vertical rod; 4. a balancing weight; 5. a suspension connection; 6. a horizontal table; 7. a container; 8. and (3) an adhesive.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Example 1:
the embodiment provides an adhesive density measuring device and an adhesive density measuring method, which are used for measuring the density of an adhesive with high viscosity so as to improve the measuring efficiency.
As shown in fig. 1 to 3, the adhesive density measuring device of the present embodiment includes an electronic balance 1, a measuring support 2, a container support 3, a weight block 4, and a suspension connector 5 for connecting the weight block 4 to the upper portion of the measuring support 2; the measuring bracket 2 is placed on a tray of the electronic balance 1; the container support 3 comprises a container tray 31 positioned below the suspension connecting piece 5, and the container tray 31 is provided with supporting legs outwards striding over the electronic balance 1, so that the container tray 31 can be suspended above the electronic balance 1.
Specifically, the measuring support 2 is composed of two upright posts 21 and a circular frame 22 at the bottom, the two upright posts 21 form an inverted Y-shaped structure, the top ends of the two upright posts 21 are welded and fixed together above the axis of the circular frame 22, a horizontal measuring tray 23 is welded and fixed at the joint of the top ends of the two upright posts 21, and the plane where the two upright posts 21 are located is perpendicular to the plane where the measuring tray 23 is located; the diameter of the circular frame 22 is slightly smaller than the diameter of the tray of the electronic balance 1, three support legs 24 are arranged at the bottom of the circular frame 22, the three support legs 24 are perpendicular to the plane where the circular frame 22 is located, the three support legs 24 are uniformly distributed on the circular frame 22, and an included angle of 120 degrees is formed between every two support legs, so that the support legs can be stably placed on the tray of the electronic balance 1. The material of the measuring bracket 2 can adopt stainless steel.
The measuring tray 23 is designed in a circular shape, and preferably, its thickness is generally designed to be 1mm in order to control the overall mass of the device. The diameters of the upright post 21, the circular frame 22 and the support leg 24 can be generally selected to be 2-3 mm. If the measurement range of the electronic balance 1 is small, an aluminum alloy with a small density may be selected. A hook 25 used for being connected with the suspension connecting piece 5 is fixed below the measuring tray 23 in a welded mode, the hook 25 is formed by bending copper wires or stainless steel wires, and the diameter of the hook can be generally selected to be 1-1.5 mm.
The container tray 31 is of a disc structure, the thickness of the container tray is designed to be 1mm, and the diameter of the container tray is smaller than the distance between the two upright posts 21 of the bracket, so that the container tray 31 is prevented from contacting with the upright posts 21; the supporting legs of the container support 3 comprise an inner horizontal rod 32 and an outer vertical rod 33, the inner end of the horizontal rod 32 is welded and fixed with the container tray 31, the outer end of the horizontal rod is integrated with the vertical rod 33, the height of the vertical rod 33 is greater than that of the electronic balance 1, the horizontal rod 32 extends outwards from the container tray 31 and crosses over the electronic balance 1, and the vertical rod 33 supports the container tray 31 at a position higher than the electronic balance 1, so that the container tray 31 can be suspended above the electronic balance 1. In this embodiment, the supporting legs have three, three supporting legs evenly distributed is on water container tray 31 body, be 120 contained angles between two liang, every vertical rod 33 place plane all is perpendicular with container tray 31 place plane to make container support 3 more stable, the length of three horizontal rod 32 is the same, the diameter of the tray of diameter ratio electronic balance 1 of the circle at three vertical rod 33 place is slightly bigger, in order to conveniently place, avoid touching electronic balance 1's tray and influence the accuracy of measuring result in the test process. The container support 3 is made of stainless steel or aluminum alloy, and the diameter of the supporting legs can be generally selected to be 2-3 mm.
The measuring bracket 2 and the container bracket 3 are simple in structure, can be formed by cutting and bending processes, and are assembled together by a welding process.
In order to conveniently take down the adhesive from the balancing weight 4 after the measurement is finished and avoid the influence on the accuracy of the next measurement caused by the fact that part of the adhesive is remained on the balancing weight 4, the balancing weight 4 is a flat-plate-shaped metal block with a smooth surface. The material of balancing weight 4 can be stainless steel or copper, and thickness is about 1mm, and quality control is about 5 g.
The suspension connecting piece 5 in the embodiment is made of copper wires or stainless steel wires, so that the mass and the volume of the suspension connecting piece are as small as possible, the influence of the suspension connecting piece 5 on a measurement result is reduced to the minimum, and the diameter of the suspension connecting piece 5 can be controlled to be 0.2-0.5 mm; the material must also have a certain rigidity and the suspension connection 5 will be able to maintain its original shape after loading the weight 4 and the adhesive. The length of the suspension connection 5 is selected accordingly according to the height of the liquid level of the container, as long as it is ensured that the counterweight 4 can be submerged below the liquid level and does not come into contact with the bottom of the container.
In this embodiment, the density measurement of the adhesive by using the above adhesive density measurement apparatus specifically includes the following steps:
A. placing an adhesive density measuring device on a horizontal table 6, placing a container 7 filled with liquid with known density on a container tray 31, placing a balancing weight 4 on a measuring tray 23 of a measuring bracket 2, and measuring a first mass m at the moment by using an electronic balance 11；
B. Suspending the balancing weight 4 on the measuring support 2 by the suspension connecting piece 5, immersing the balancing weight 4 in the liquid in the container 7, and measuring the second mass m by the electronic balance 12；
C. Taking the balancing weight 4 out of the liquid, placing a proper amount of adhesive 8 on the measuring tray 23 of the measuring bracket 2 together with the balancing weight 4 (as shown in fig. 4), and measuring a third mass m at the moment by using the electronic balance 13；
D. Heating the adhesive 8 to an activated state, coating and adhering the adhesive 8 on the balancing weight 4, coating the adhesive 8 into a hemispherical dot shape or a strip shape with a semicircular section in order to avoid bubbles at the contact surface of the adhesive 8 and the balancing weight 4 when coating the adhesive 8, then suspending the balancing weight 4 on the measuring support 2 by using the suspension connecting piece 5 to immerse the balancing weight 4 and the adhesive 8 adhered thereon in the liquid of the container 7 below (as shown in fig. 5 and 6), and measuring the fourth mass m at the moment by using the electronic balance 14；
E. The density p of the adhesive 8 is calculated according to the following formula,
the above rho0Is the density of the liquid.
(m) above3-m1) Mass of the adhesive 8 in air (m)3-m4) Mass of the liquid (m) having the same volume as that of the weight member 4 and the adhesive 8 when the weight member 4 and the adhesive 8 are immersed in the liquid1-m2) Is the mass of liquid having the same volume as the weight 4 when the weight 4 is immersed in the liquid alone, and therefore (m)3-m4)-(m1-m2) Corresponding to the mass of liquid having the same volume as the volume of the adhesive 8 when the adhesive 8 is immersed in the liquid alone,
i.e. the volume of liquid which is the same as the volume of the adhesive 8, i.e. the volume of the adhesive 8, the mass and volume of the adhesive 8 are known, and the density can be easily calculated.
In this embodiment, to simplify the calculation process, the liquid is water having a density of 1 g/cc (i.e., ρ01) so that the calculation formula becomes
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the invention is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. An adhesive density measuring device is characterized by comprising an electronic balance, a measuring support, a container support, a balancing weight and a suspension connecting piece for connecting the balancing weight and the upper part of the measuring support; the measuring bracket is placed on a tray of the electronic balance; the container support comprises a container tray located below the suspension connecting piece, and the container tray is provided with supporting legs which outwards span the electronic balance, so that the container tray can be suspended above the electronic balance.
2. The adhesive density measuring device according to claim 1, wherein a measuring tray is mounted on the upper portion of the measuring support, and a hook for connecting with a hanging connector is arranged below the measuring tray.
3. The adhesive density measuring device according to claim 1, wherein the supporting legs of the container holder are formed by connecting an inner horizontal bar and an outer vertical bar, the end of the horizontal bar is fixedly connected with the container tray, and the height of the vertical bar is greater than that of the electronic balance.
4. The adhesive density measuring device of claim 1, wherein the weight block is a smooth-surfaced metal block.
5. An adhesive density measuring method using the adhesive density measuring apparatus according to claim 1, characterized by comprising the steps of:
A. placing a container filled with liquid with known density on a container tray, placing a balancing weight on a measuring bracket, and measuring a first mass m1 at the moment by using an electronic balance;
B. suspending the balancing weight on the measuring bracket by using a suspension connecting piece, immersing the balancing weight in the liquid in the container, and measuring a second mass m2 by using an electronic balance;
C. placing the balancing weight and the adhesive on a measuring bracket, and measuring a third mass m3 by using an electronic balance;
D. adhering an adhesive to the balancing weight, suspending the balancing weight on the measuring support by using a suspension connecting piece, so that the balancing weight and the adhesive are immersed in the liquid in the container below, and measuring the fourth mass m4 by using an electronic balance;
E. the density p of the adhesive is calculated according to the following formula,
the above rho0Is the density of the liquid.
6. The adhesive density measurement method of claim 5, wherein the liquid is water having a density of 1 g/cc.
7. The method for measuring the density of the adhesive according to claim 5 or 6, wherein in the step D, the adhesive is heated to an activated state and then adhered to the weight member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111090116.5A CN113776985A (en) | 2021-09-17 | 2021-09-17 | Adhesive density measuring device and measuring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111090116.5A CN113776985A (en) | 2021-09-17 | 2021-09-17 | Adhesive density measuring device and measuring method |
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| CN113776985A true CN113776985A (en) | 2021-12-10 |
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| CN202092926U (en) * | 2011-01-26 | 2011-12-28 | 尚之寿 | Accessory device using electronic scale to measure material density and apparatus including same |
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| CN109827869A (en) * | 2019-03-28 | 2019-05-31 | 广州市垠瀚能源科技有限公司 | A kind of device and method measuring sticky fluid density |
| CN209961637U (en) * | 2019-03-28 | 2020-01-17 | 广州市垠瀚能源科技有限公司 | Device for measuring density of viscous fluid |
| CN212409814U (en) * | 2020-07-21 | 2021-01-26 | 北京龙苑伟业新材料有限公司 | Volume change rate testing arrangement of environment-friendly adhesive |
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2021
- 2021-09-17 CN CN202111090116.5A patent/CN113776985A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090078926A (en) * | 2008-01-16 | 2009-07-21 | 한국표준과학연구원 | Density measurement device and measurement method using vacuum |
| CN201340374Y (en) * | 2008-12-17 | 2009-11-04 | 西安航天化学动力厂 | Density measuring device for solid materials |
| CN202092926U (en) * | 2011-01-26 | 2011-12-28 | 尚之寿 | Accessory device using electronic scale to measure material density and apparatus including same |
| CN108225974A (en) * | 2017-10-18 | 2018-06-29 | 赛多利斯科学仪器(北京)有限公司 | Electronic balance density measure kit device |
| CN108225528A (en) * | 2017-10-18 | 2018-06-29 | 赛多利斯科学仪器(北京)有限公司 | Folding electronic balance density measure kit device |
| CN109827869A (en) * | 2019-03-28 | 2019-05-31 | 广州市垠瀚能源科技有限公司 | A kind of device and method measuring sticky fluid density |
| CN209961637U (en) * | 2019-03-28 | 2020-01-17 | 广州市垠瀚能源科技有限公司 | Device for measuring density of viscous fluid |
| CN212409814U (en) * | 2020-07-21 | 2021-01-26 | 北京龙苑伟业新材料有限公司 | Volume change rate testing arrangement of environment-friendly adhesive |
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Application publication date: 20211210 |
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