CN115078177A - Testing device and testing method for fluidity of adhesive - Google Patents
Testing device and testing method for fluidity of adhesive Download PDFInfo
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- CN115078177A CN115078177A CN202210809609.8A CN202210809609A CN115078177A CN 115078177 A CN115078177 A CN 115078177A CN 202210809609 A CN202210809609 A CN 202210809609A CN 115078177 A CN115078177 A CN 115078177A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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Abstract
The invention relates to a device and a method for testing the fluidity of an adhesive, belonging to the technical field of adhesive performance testing. An adhesive fluidity test device, comprising: the container is used for adding the adhesive to be tested; the stirring motor is used for providing stirring power; the upper end of the testing hollow pipe is fixedly connected with the output end of the stirring motor, the axis of the testing hollow pipe is overlapped with the rotating axis of the output end, and the testing hollow pipe is vertically inserted into the adhesive to be tested; the timing unit is used for calculating climbing time; and the height measuring unit is used for measuring the climbing height. When the adhesive to be tested is stirred by the testing hollow tube, the adhesive can generate a pole climbing phenomenon under the action of viscous shear stress of liquid of the adhesive and a contact surface, so that the liquid level in the testing hollow tube is higher than that of the container, and a tester can quantitatively characterize the fluidity of the adhesive by measuring through the timing unit and the height measuring unit.
Description
Technical Field
The invention belongs to the technical field of adhesive performance testing, and particularly relates to a testing device and a testing method for adhesive fluidity.
Background
The gluing (bonding, adhering, cementing, gluing) refers to a technique of connecting the surfaces of homogeneous or heterogeneous objects together by using an adhesive, and has the characteristics of continuous stress distribution, light weight, sealing, low temperature of most processes and the like. The glue joint is particularly suitable for connecting different materials, different thicknesses, ultrathin specifications and complex components. The glue joint has the fastest recent development and extremely wide application industry, and has great influence on the improvement of high-tech scientific and technical progress and the daily life of people. Organic or inorganic, natural or synthetic materials, which can be used to join together articles (or materials) of the same, two or more, homogeneous or heterogeneous nature, and which have sufficient strength after curing, are collectively referred to as adhesives or bonding agents. The flowability of the adhesive has a crucial influence on the bonding quality between objects, and the poor flowability of the adhesive can cause insufficient filling of the adhesive in the bonding process and influence the bonding strength.
There are two types of adhesive flow tests currently available. Firstly, the measurement is carried out by a rheometer and a viscometer; and the second method is to judge by a manual stirring sensing method. However, the rheometer in the former is expensive, the investment is large, the rheological parameters are relatively difficult to understand for application-level engineers (usually, the parameters are used for characterization in the aspect of hydromechanics academic research), the threshold for using is high, and the viscosity measured by the viscometer is a single index which cannot accurately reflect the actual application performance. Viscometers do not accurately measure the flow or flow condition of a glue for newtonian fluids and non-newtonian fluids or fluids in between. Such as: two samples to be measured having the same viscosity may have different feelings in actual use. The latter manual stirring feeling method is too subjective and cannot be quantified, and is influenced by factors such as testers, a test environment, a container, a stirring tool and the like, and cannot completely and truly reflect the application performance.
Disclosure of Invention
In order to overcome the problems of the prior art, the present invention provides a device and a method for testing the fluidity of an adhesive, which solves the problems of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
an adhesive fluidity test device, comprising: the container is used for adding the adhesive to be tested; the stirring motor is used for providing stirring power; the upper end of the testing hollow pipe is fixedly connected with the output end of the stirring motor, the axis of the testing hollow pipe is overlapped with the rotating axis of the output end, and the testing hollow pipe is vertically inserted into the adhesive to be tested in the container; the timing unit is used for calculating the rising time of the adhesive to be tested in the test hollow tube; and the height measuring unit is used for measuring the climbing height of the adhesive to be measured in the test hollow pipe.
The invention preferably adopts the technical scheme that the test device also comprises a support frame, one end of the support frame is fixedly connected with the upper end of the stirring motor, and the other end of the support frame is fixedly connected with one end of the test hollow pipe.
The invention has the preferable technical scheme that the test hollow tube is a transparent glass tube, and the outer wall of the test hollow tube is provided with scales.
The invention preferably adopts the technical scheme that the device also comprises a control circuit board; the control circuit board is electrically connected with the stirring motor and the timing unit.
The invention has the preferable technical scheme that the container is also provided with a temperature control unit for setting and controlling the test temperature of the adhesive to be tested.
The invention also provides a method for testing the fluidity of the adhesive, which comprises the following steps:
s00: adding an adhesive to be tested into the container;
s10: the upper end of the testing hollow pipe is fixedly connected with the output end of the stirring motor, the axis of the testing hollow pipe is overlapped with the rotating axis of the output end, and the testing hollow pipe is vertically inserted into the adhesive to be tested;
s20: driving the testing hollow pipe to uniformly stir the adhesive to be tested by using a stirring motor;
s30: stirring the test hollow pipe for a certain stirring time at a certain test temperature and a certain stirring speed;
s40: the fluidity of the adhesive to be tested can be quantitatively characterized according to the rising height of the adhesive to be tested in the test hollow tube from the liquid level.
The invention has the preferable technical scheme that the distance from the outer wall of each direction of the test hollow pipe to the inner wall of each direction of the container is more than or equal to 5 times of the diameter of the test hollow pipe.
The invention preferably adopts the technical scheme that the liquid level height of the adhesive to be tested is more than or equal to 50mm, and the depth of the test hollow tube inserted into the liquid level of the adhesive to be tested is 20-30 mm.
The invention preferably adopts the technical scheme that the test temperature is 25-35 ℃, the stirring speed is 1000-2000 rpm, and the stirring time is 20-45 s.
The invention has the beneficial effects that:
when the adhesive to be tested is stirred by the testing hollow tube, due to the viscous shear stress action of the liquid of the adhesive and the contact surface, the adhesive can climb along the inside of the testing hollow tube in the stirring process, so that the liquid level inside the testing hollow tube is higher than that of the container, and a tester can quantitatively represent the fluidity of the adhesive by measuring the climbing height of the adhesive in a certain time through a timer. When the rising height of the liquid level is higher, the poorer the fluidity of the adhesive to be measured is; otherwise, the better.
The testing device and the testing method are simple, the cost is low, the qualification requirement on operators is low, and high school or secondary school students can quickly master the using method through training. The measured indexes can be visually quantized, and whether the product meets the requirements of the user or not can be visually judged by combining application experience. The defect that the subjective judgment of adjectives or adverbs such as 'good, general and not good' is passed in the past is overcome. Meanwhile, the measuring time is short, the detection and equipment cleaning of one product can be completed within 3-5 min, and the detection speed can be effectively increased. The conventional method for judging whether the flowability of the adhesive is proper is to judge whether the flowability of the adhesive is proper or not by subjective feeling of an operator according to the brushing hand feeling of the adhesive, the wire drawing of the adhesive during brushing and the like. The test device can datafy the abstract text description subjective judgment method, is more objective, concrete and accurate, and is not influenced by subjective factors of different operators.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view showing a state of use of an apparatus for testing fluidity of an adhesive according to the present invention;
FIG. 2 is a block diagram showing a control structure of an apparatus for testing fluidity of an adhesive according to the present invention;
FIG. 3 is a flow chart of a method for testing the flowability of an adhesive according to the present invention.
In the figure:
1-a container; 2-a stirring motor; 21-an output terminal; 3-testing the hollow pipe; 4-a base; 5-a support frame; 6-a timing unit; 7-a control circuit board; 8-a temperature control unit; 9-adhesive to be tested; a-axis of the tube; b-rotating the axis.
Detailed Description
The technical solutions of the present invention will be described in detail below in order to clearly understand the technical features, objects, and advantages of the present invention, but the present invention is not limited to the practical scope of the present invention.
As shown in fig. 1-2, the device for testing fluidity of an adhesive provided in this embodiment includes: the container 1 is used for adding an adhesive 9 to be tested; the stirring motor 2 is used for providing stirring power; the testing hollow pipe 3 is fixedly connected with the output end 21 of the stirring motor 2, the pipe axis A of the testing hollow pipe 3 is overlapped with the rotating axis B of the output end 21, the testing hollow pipe 3 is vertically inserted into the adhesive 9 to be tested in the container 1, and the adhesive 9 to be tested climbs in the pipe in the stirring process of the stirring motor 2; the timing unit 6 is used for calculating the rising time of the adhesive 9 to be tested in the test hollow tube 3, and a display screen for displaying the time is arranged in the timing unit 6; and the height measuring unit is used for measuring the climbing height H of the adhesive to be measured in the test hollow pipe. Specifically, the testing device of this embodiment is further provided with a base 4, the container 1 is placed on the base 4, the base 4 is further provided with a support frame 5 for connecting each unit, one end of the support frame 5 is fixedly connected with the upper end of the stirring motor 2, and the other end of the support frame 5 is fixedly connected with one end of the timing unit 6. During the test, agitator motor 2 drives test hollow tube 3 and takes place the rotation motion, and test hollow tube 3 and then stir the adhesive 9 that awaits measuring, because the viscidity shear stress effect of adhesive own liquid and contact surface, the pole climbing phenomenon can take place for the adhesive, the adhesive 9 that awaits measuring can climb along the inside of test hollow tube 3 at the in-process of test hollow tube 3 stirring for the inside liquid level of test hollow tube 3 is higher than the liquid level of container 1, the liquid level difference that exceeds is climbing height H. The tester can quantitatively characterize the fluidity of the adhesive by measuring the rising height H of the adhesive within a certain time through a timing unit (which can be measured by a timer, a watch and other tools) and a height measuring unit (which can be measured by a caliper, a ruler and other simple tools, and can also be measured by a precise instrument similar to a grating ruler). When the rising height H of the liquid level is higher, the poorer the fluidity of the adhesive 9 to be measured is; otherwise, the better. The testing device has the advantages of simple structure, low device cost and low qualification requirement on operators, and high school or secondary school students can quickly master the using method through training. The measured index can be intuitively quantized, and whether the product meets the requirements of a user or not can be intuitively judged by combining application experience. The defects of subjective judgment of 'good, general, not good' and the like in the past are overcome. Meanwhile, the measuring time is short, the detection and equipment cleaning of one product can be completed within 3-5 min, and the detection speed can be effectively increased. The conventional method for judging whether the flowability of the adhesive is proper is to judge whether the flowability of the adhesive is proper or not by subjective feeling of an operator according to the brushing hand feeling of the adhesive, the wire drawing of the adhesive during brushing and the like. The test device can datafy the abstract text description subjective judgment method, is more objective, concrete and accurate, and is not influenced by subjective factors of different operators.
In order to facilitate the user to observe the tested structure, preferably, the testing hollow tube 3 in this embodiment is a transparent glass tube, and the outer wall of the testing hollow tube 3 is provided with scales. The scale is arranged to replace the height measuring unit. Moreover, the glass tube is generally and easily available, has good acid and alkali resistance and solvent resistance, moderate specific surface energy and convenient operation, and can simply and quickly measure and read data. The plastic pipe and the metal pipe are not easy to obtain, are easy to deform or cannot resist solvents or acid and alkali corrosion, and have good compatibility and affinity with most organic matters, so that the deviation of a test result can be influenced theoretically.
In order to facilitate the timing of the tester, the tester preferably further comprises a control circuit board 7; the control circuit board 7 is electrically connected with the stirring motor 2, the control circuit board 7 is electrically connected with the timing unit 6, and the timing unit 6 adopts an automatic timer. When a tester starts to start the stirring motor 2, the automatic timer is simultaneously switched on through the control circuit board 7 to start timing, so that the convenience and the accuracy of the test are improved.
In order to further ensure the stability of the test data and to adapt to the flow characteristics of different adhesives, the container 1 is preferably also provided with a temperature control unit 8 for setting and controlling the test temperature of the adhesive 9 to be tested. In this embodiment, the temperature control unit 8 is a heating jacket device wrapped around the outside of the container 1.
As shown in fig. 3, a method for testing the fluidity of an adhesive, using the testing apparatus according to the first embodiment, includes the following steps:
s00: adding an adhesive to be tested into the container;
s10: the upper end of the testing hollow pipe is fixedly connected with the output end of the stirring motor, the axis of the testing hollow pipe is overlapped with the rotating axis of the output end, and the testing hollow pipe is vertically inserted into the adhesive to be tested;
s20: driving the testing hollow pipe to uniformly stir the adhesive to be tested by using a stirring motor;
s30: stirring the test hollow pipe for a certain stirring time at a certain test temperature and a certain stirring speed;
s40: the fluidity of the adhesive to be tested can be quantitatively characterized according to the rising height of the adhesive to be tested in the test hollow tube from the liquid level.
Since the outer wall of the test hollow tube is too close to the inner wall of the container, which may cause a large deviation in the test result, it is preferable that the distance from the outer wall of the test hollow tube to the inner wall of the container is 5 times or more greater than the diameter of the test hollow tube. In this embodiment, the diameter of the test hollow tube is 5mm, and the test hollow tube is located in the middle of a container, and the container is rectangular, and the length, the width, the side length and the height of the container are 250mm and 300mm respectively.
In order to stabilize the tested data and reduce the fluctuation of the data, preferably, the liquid level height of the adhesive to be tested is greater than or equal to 50mm, and the depth of the test hollow tube inserted into the liquid level of the adhesive to be tested is 20-30 mm. In this embodiment, the height of the liquid surface of the adhesive to be tested is 100mm, and the depth of the test hollow tube inserted into the liquid surface of the adhesive to be tested is 20 mm.
In order to further ensure the stable performance of the measured adhesive, the testing temperature is 25-35 ℃, the stirring speed is 1000-2000 rpm, and the stirring time is 20-45 s. In this example, the test temperature was 30. + -. 0.5 ℃, the stirring speed was 1500. + -. 20rpm, and the stirring time was 30. + -. 1.00 s.
The method can be applied to the measurement of the fluidity of various adhesives, and is particularly and accurately applicable to polyurethane adhesives, polyester adhesives, chloroprene rubber or graft modified chloroprene rubber adhesive, adhesives taking synthetic rubber such as SBS or SIS and modified substances thereof as main components.
The adhesive has different types, different use occasions and different purposes, and has different acceptable flowability standards. For example, polyurethane adhesives for shoe sole assembly and formation, most factories accept adhesives with climbing heights up to 20mm or less. Generally, the ideal state is that the wire drawing is acceptable when the wire drawing is less than 10mm and is slightly drawn when the wire drawing is between 10mm and 20mm, the wire drawing is serious when the wire drawing exceeds 20mm, the retardation force is large when the wire drawing is brushed, the experience of operators is poor, and the working efficiency is influenced. For neoprene adhesive and synthetic rubber adhesive used in the stitching part of the vamp, the adhesive with the climbing height of 50mm or even 80mm does not affect the operation and the use because of different using methods. The tester can judge whether the requirements of the use environment are met according to the test data result of the adhesive to be tested.
The embodiments described above are presented to enable those skilled in the art to make and use the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications to the present invention based on the disclosure of the present invention within the protection scope of the present invention.
Claims (9)
1. An adhesive fluidity test device, comprising:
the container is used for adding the adhesive to be tested;
the stirring motor is used for providing stirring power;
the upper end of the testing hollow pipe is fixedly connected with the output end of the stirring motor, the axis of the testing hollow pipe is overlapped with the rotating axis of the output end, and the testing hollow pipe is vertically inserted into the adhesive to be tested in the container;
the timing unit is used for calculating the rising time of the adhesive to be tested in the test hollow pipe;
and the height measuring unit is used for measuring the climbing height of the adhesive to be measured in the test hollow pipe.
2. The test device of claim 1, wherein:
the device also comprises a supporting frame;
one end of the support frame is fixedly connected with the upper end of the stirring motor, and the other end of the support frame is fixedly connected with one end of the timing unit.
3. The test device of claim 1, wherein:
the test hollow tube is a transparent glass tube, and the outer wall of the test hollow tube is provided with scales.
4. The test device of claim 1, wherein:
the device also comprises a control circuit board;
the control circuit board is electrically connected with the stirring motor, and the control circuit board is electrically connected with the timing unit.
5. The test device of claim 1, wherein:
the container is also provided with a temperature control unit for setting and controlling the testing temperature of the adhesive to be tested.
6. A method for testing the fluidity of an adhesive is characterized by comprising the following steps:
s00: adding an adhesive to be tested into the container;
s10: the upper end of the testing hollow pipe is fixedly connected with the output end of the stirring motor, the axis of the testing hollow pipe is overlapped with the rotating axis of the output end, and the testing hollow pipe is vertically inserted into the adhesive to be tested;
s20: driving the testing hollow pipe to uniformly stir the adhesive to be tested by using a stirring motor;
s30: stirring the test hollow pipe for a certain stirring time at a certain test temperature and a certain stirring speed;
s40: the fluidity of the adhesive to be tested can be quantitatively characterized according to the rising height of the adhesive to be tested in the test hollow tube from the liquid level.
7. The test method of claim 6, wherein:
the distance from the outer wall of each direction of the testing hollow pipe to the inner wall of each direction of the container is more than or equal to 5 times of the diameter of the testing hollow pipe.
8. The test method of claim 6, wherein:
the height of the liquid surface of the adhesive to be tested is more than or equal to 50mm, and the depth of the test hollow tube inserted into the liquid surface of the adhesive to be tested is 20-30 mm.
9. The test method of claim 6, wherein:
the testing temperature is 25-35 ℃, the stirring speed is 1000-2000 rpm, and the stirring time is 20-45 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210809609.8A CN115078177A (en) | 2022-07-11 | 2022-07-11 | Testing device and testing method for fluidity of adhesive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210809609.8A CN115078177A (en) | 2022-07-11 | 2022-07-11 | Testing device and testing method for fluidity of adhesive |
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| CN115078177A true CN115078177A (en) | 2022-09-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110141A (en) * | 2023-10-18 | 2023-11-24 | 常州市立时灵胶粘材料有限公司 | Adhesive fluidity testing device and method |
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2022
- 2022-07-11 CN CN202210809609.8A patent/CN115078177A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110141A (en) * | 2023-10-18 | 2023-11-24 | 常州市立时灵胶粘材料有限公司 | Adhesive fluidity testing device and method |
| CN117110141B (en) * | 2023-10-18 | 2023-12-26 | 常州市立时灵胶粘材料有限公司 | Adhesive fluidity testing device and method |
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