CN111811935A - Hydrogel stretching environment moisturizing device and chemical-mechanical coupling stretching test method - Google Patents
Hydrogel stretching environment moisturizing device and chemical-mechanical coupling stretching test method Download PDFInfo
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- CN111811935A CN111811935A CN202010590182.8A CN202010590182A CN111811935A CN 111811935 A CN111811935 A CN 111811935A CN 202010590182 A CN202010590182 A CN 202010590182A CN 111811935 A CN111811935 A CN 111811935A
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- hydrogel
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- atomizer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
Abstract
The invention discloses a hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test method. And the stretching machine applies load to the hydrogel sample through the clamp in the box body to complete the mechanical property curve test of tension-stretching displacement. According to the invention, the environment moisturizing device can be constructed by the sealed box body and the atomizer, so that the phenomenon of water volatilization of a loading section of hydrogel during stretching can be prevented; the atomizer is embedded at the lower part of the box body, and as the density of the generated water vapor is smaller than that of air, the water vapor is filled in the box body through the tensile hydrogel test piece; the box body is in a closed state, and the reciprocating motion of the main shaft of the stretcher can cause the pressure in the box body to change during stretching, so that the exhaust valve is adopted to control the pressure in the box body.
Description
Technical Field
The invention relates to a hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test method, belongs to the technical field of experimental mechanics and hydrogel material multi-field coupling test, and particularly relates to a hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test method.
Background
The hydrogel is a soft material, and generally has a three-dimensional network structure composed of hydrophilic and cross-linking polymers, and by virtue of the structure and the characteristics of the polymers, the hydrogel can absorb a large amount of external moisture. The hydrogel becomes a soft biomaterial with application value due to the multifunctionality, the bionic structure and the adjustable mechanical property, so that the hydrogel has wide application prospect in the fields of industrial products, biomedicine, drug delivery, daily supplies and the like. Through experimental measurement, data support and guidance can be provided for numerical research and device design, so that the detection of mechanical behavior and mechanical behavior of hydrogel by adopting experimental means is extremely important. The technical background of the invention is as follows:
firstly, the correlation between the mechanical property of the hydrogel and the water combined by the hydrogel is very large, so that the experiment needs to pay attention to the amount of the water combined by the hydrogel;
secondly, the test piece is generally smaller, the specific surface area is large, water loss is easy, the test piece with the large specific surface area is greatly influenced by the environment, and if the environment is not monitored, the water content changes due to a plurality of factors, and data drift is generated in the test.
Thirdly, the existing common water bath stretching hydrogel is loaded in a water environment, and the hydrogel has larger water absorption and retention capacity due to the special network structure of the hydrogel, so that the hydrogel is easy to fully swell and the water content of the hydrogel is changed.
Fourthly, most of the existing stretching machines do not have a closed internal environment, and electronic elements in the stretching machines are easily affected by water vapor, so that the machines cannot be effectively protected, and the environmental influence on the test piece during the stretching test cannot be avoided.
Disclosure of Invention
In order to solve the problems, the invention provides a hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test method. The device consists of an inner part and an outer part, and the inner part consists of a stretcher, a connecting device, a pin, a clamping device and a tension sensor. One end of the connecting device is connected with the main shaft of the stretcher through a pin, and the other end of the connecting device is connected with the upper clamping device through thread matching. The lower clamping device is connected with the tension sensor through a connecting device. The tension sensor is arranged on a workbench of the stretcher and is connected with the differential/integral adjustment analysis module through a lead. The outside is composed of a box body, a rubber packaging film, a glove of an isolation box, an atomizer, a sensor, an exhaust valve and a moisture generating device. The box links to each other with rubber packaging film, and rubber packaging film will link to each other the stretcher through the interference fit with the stretcher main shaft and seal, the shielded box gloves pass through the glove hole and are connected with the box integration, the sensor is pasted respectively in the upper and lower both sides of box, carry out data transmission through wireless module and environment monitoring display, environment monitoring display is as for the box edge, visual display monitoring data, the atomizer is inlayed and is linked to each other at the opening part of box and through the moisture generating device in pipe and the box outside, inside replenishing moisture to the atomizer, discharge valve then connects the inside pressure of the top control box at the box.
The technical scheme of the invention is as follows:
a hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test method are characterized by comprising the following steps: the device comprises a stretcher, a connecting device, a pin, a clamping device, a tension sensor, a box body, a rubber packaging film, a glove of an isolation box, an atomizer, a sensor, an environment monitoring display, an exhaust valve, a moisture generating device and a differential/integral adjusting and analyzing module.
The atomizer is located the box lower part, because vapor density is less than air density, the produced vapor of atomizer will fill gradually in inside the box, can effectively avoid the free dissipation of aquogel combination water.
The exhaust valve can prevent the phenomenon that the pressure inside the closed box body is increased due to the fact that the atomizer generates water vapor.
The invention is further improved and characterized in that an upper sensor and a lower sensor are applied to respectively detect the air humidity, the pressure intensity and the temperature of the upper side and the lower side of the box body, the air humidity of a testing part is corrected and calculated, and the air humidity, the pressure intensity in the box body and the temperature in the box body are displayed through a display, so that the environment in the box body is ensured to be in an ideal testing state.
A hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test method are characterized in that: the method comprises the following specific steps: step 1: the hydrogel stretching environment moisturizing device is established, the box body is sealed before a stretching test, the air tightness of the box body is detected in advance, and the disturbance of environmental data monitoring in the stretching test process is prevented.
Step 2: preparing a hydrogel tensile sample, holding the sample between the upper chuck and the lower chuck, ensuring that the sample is in a vertical state, then introducing water vapor into the box body through the water generating device and the atomizer, and simultaneously monitoring the humidity, the temperature and the pressure inside the box body in real time by using the sensor and the displayer.
And step 3: and then, carrying out a tensile experiment on the hydrogel sample, recording a curve graph of the tensile force sensor along with the change of time, and then drawing a hydrogel stress-strain curve by taking the curve graph as a basis.
And 4, step 4: changing the humidity in the box body, carrying out a tensile experiment on the hydrogel sample, recording a curve graph of the change of the tensile force sensor along with time, and finally establishing a relation between the humidity and the stress.
Advantageous effects
According to the invention, the environment moisturizing device can be constructed by the sealed box body and the atomizer, so that the phenomenon of water volatilization of a loading section of hydrogel during stretching can be prevented; the humidity of air in the box body, the pressure in the box body and the temperature in the box body are monitored through the sensors, data of the sensors on the upper side and the lower side are integrated and calculated through the monitors, monitoring results are recorded visually, and the environment in the box body is easy to monitor and manage; the atomizer is embedded at the lower part of the box body, and as the density of the generated water vapor is smaller than that of air, the water vapor is filled in the box body through the tensile hydrogel test piece; the box body is in a closed state, so that the damage of water vapor to the electric element of the drawing machine can be prevented; the box body is in a closed state, and the reciprocating motion of the main shaft of the stretcher can cause the pressure in the box body to change during stretching, so that the exhaust valve is adopted to control the pressure in the box body.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention.
Fig. 2 is a schematic structural view of the clamping device.
Fig. 3 is a schematic structural view of the case.
Detailed Description
In order that the present invention may be more clearly understood, specific embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
A porous network structure hydrogel osmotic pressure adjusting stretching device and a chemical-mechanical coupling stretching test method are characterized in that a hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test method are provided, and the method comprises the following steps: the device comprises a stretcher main shaft (1), a connecting device (2), a pin (3), a clamping device (4), a tension sensor (5), a differential/integral adjustment analysis module (6), a rubber packaging film (7), an exhaust valve (8), a sensor (9), a box body (10), isolation box gloves (11), an environment monitoring display (12), an atomizer (13) and a moisture generating device (14). The device consists of an inner part and an outer part: inside by stretcher main shaft (1), connecting device (2), round pin (3), clamping device (4), tension sensor (5) constitute: one end of the connecting device (2) is connected with the main shaft (1) of the stretcher through the pin (2), and the other end of the connecting device is connected with the upper clamping device (4) through thread matching. The lower clamping device (4) is connected with the tension sensor (5) through the connecting device (2). The tension sensor is arranged on a workbench of the stretcher, and performs information processing and transmission through the wireless transmission module and the differential/integral adjustment analysis module (6); the outside is become by rubber packaging film (7), discharge valve (8), sensor (9), box (10), shielded box gloves (11), environmental monitoring display (12), atomizer (13), moisture generating device (14): box (10) link to each other with rubber encapsulation membrane (7), and rubber encapsulation membrane (7) seal the stretcher through the interference fit with stretcher main shaft (1), isolation box gloves (11) link to each other rather than through the glove hole with box (10), sensor (9) are pasted respectively in the upper and lower both ends of box (10), carry out data transmission through wireless module and environment monitoring display (12), box (10) one side is arranged in to environment monitoring display (12), so that the visual display monitoring data, atomizer (13) are inlayed and are linked to each other with moisture generating device (14) at the opening part of box (10) the left and right sides and through the pipe, replenish moisture inside atomizer (13), discharge valve (8) then are connected the inside pressure of top control box (10) of box (10).
As a further improvement of the invention, the atomizer is positioned at the lower part of the box body, and because the density of the water vapor is lower than that of the air, the water vapor generated by the atomizer gradually fills the box body, so that the free dissipation of the hydrogel-bound water can be effectively avoided.
The hydrogel stretching environment moisturizing device and the chemical-mechanical coupling stretching test method are technically characterized in that: by using the exhaust valve, the phenomenon that the pressure inside the closed box body is increased due to the fact that the atomizer generates water vapor can be prevented.
The hydrogel stretching environment moisturizing device and the chemical-mechanical coupling stretching test method are technically characterized in that: the upper sensor and the lower sensor are used for respectively detecting the air humidity, the pressure intensity and the temperature of the upper side and the lower side of the box body, correcting and calculating the air humidity of the testing part, and displaying the air humidity, the pressure intensity in the box body and the temperature in the box body through the displayer to ensure that the environment in the box body is in an ideal testing state.
The hydrogel stretching environment moisturizing device and the chemical-mechanical coupling stretching test method are technically characterized in that: the method comprises the following specific steps:
step 1: the hydrogel stretching environment moisturizing device is established, the box body is sealed before a stretching test, the air tightness of the box body is detected in advance, and the disturbance of environmental data monitoring in the stretching test process is prevented.
Step 2: preparing a hydrogel tensile sample, holding the sample between the upper chuck and the lower chuck, ensuring that the sample is in a vertical state, then introducing water vapor into the box body through the water generating device and the atomizer, and simultaneously monitoring the humidity, the temperature and the pressure inside the box body in real time by using the sensor and the displayer.
And step 3: and then, carrying out a tensile experiment on the hydrogel sample, recording a curve graph of the tensile force sensor along with the change of time, and then drawing a hydrogel stress-strain curve by taking the curve graph as a basis.
And 4, step 4: changing the humidity in the box body, carrying out a tensile experiment on the hydrogel sample, recording a curve graph of the change of the tensile force sensor along with time, and finally establishing a relation between the humidity and the stress.
Claims (6)
1. A hydrogel stretching environment moisturizing device and a chemical-mechanical coupling stretching test device are characterized in that the device is composed of an inner part and an outer part:
inside by stretcher main shaft (1), connecting device (2), round pin (3), clamping device (4), tension sensor (5) constitute: one end of the connecting device (2) is connected with the main shaft (1) of the stretcher through the pin (2), and the other end of the connecting device is connected with the upper clamping device (4) through thread matching. The lower clamping device (4) is connected with the tension sensor (5) through the connecting device (2). The tension sensor is arranged on a workbench of the stretcher, and performs information processing and transmission through the wireless transmission module and the differential/integral adjustment analysis module (6);
the outside is become by rubber packaging film (7), discharge valve (8), sensor (9), box (10), shielded box gloves (11), environmental monitoring display (12), atomizer (13), moisture generating device (14): the box (10) links to each other with rubber encapsulation membrane (7), rubber encapsulation membrane (7) are closed the stretcher through cooperating with stretcher main shaft (1), isolation box gloves (11) link to each other rather than through with box (10) glove hole, sensor (9) are pasted respectively in the upper and lower both ends of box (10), carry out data transmission through wireless module and environment monitoring display (12), box (10) one side is arranged in environment monitoring display (12), so that the visual display monitoring data, atomizer (13) are inlayed at the opening part of box (10) both sides and are linked to each other with moisture generating device (14) through the pipe, replenish moisture inside atomizer (13), discharge valve (8) then are connected the inside pressure of top control box (10) of box (10).
2. The hydrogel stretching environment moisturizing device and the chemical-mechanical coupling stretching test device according to claim 1, which is technically characterized in that: the atomizer is located the box lower part, because vapor density is less than air density, the produced vapor of atomizer will fill gradually in inside the box, can avoid the free dissipation of aquogel combination water.
3. The hydrogel stretching environment moisturizing device and the chemical-mechanical coupling stretching test device according to claim 1, which is technically characterized in that: the exhaust valve prevents the phenomenon that the pressure inside the closed box body is increased due to the fact that the atomizer generates water vapor.
4. The hydrogel stretching environment moisturizing device and the chemical-mechanical coupling stretching test device according to claim 1, which is technically characterized in that: the upper sensor and the lower sensor are used for respectively detecting the air humidity, the pressure intensity and the temperature of the upper side and the lower side of the box body, correcting and calculating the air humidity of the testing part, and displaying the air humidity, the pressure intensity in the box body and the temperature in the box body through the displayer to ensure that the environment in the box body is in an ideal testing state.
5. The hydrogel stretching environment moisturizing device and the chemical-mechanical coupling stretching test device according to claim 1, which is technically characterized in that: the rubber packaging film (7) and the stretcher spindle (1) seal the stretcher through interference fit.
6. A hydrogel stretching environment moisturizing device and chemical-mechanical coupling stretching test method performed by the device of claim 1, wherein: the method comprises the following specific steps:
step 1: the hydrogel stretching environment moisturizing device is established, the box body is sealed before a stretching test, the air tightness of the box body is detected in advance, and the disturbance of environmental data monitoring in the stretching test process is prevented.
Step 2: preparing a hydrogel tensile sample, holding the sample between the upper chuck and the lower chuck, ensuring that the sample is in a vertical state, then introducing water vapor into the box body through the water generating device and the atomizer, and simultaneously monitoring the humidity, the temperature and the pressure inside the box body in real time by using the sensor and the displayer.
And step 3: and then, carrying out a tensile experiment on the hydrogel sample, recording a curve graph of the tensile force sensor along with the change of time, and then drawing a hydrogel stress-strain curve by taking the curve graph as a basis.
And 4, step 4: changing the humidity in the box body, carrying out a tensile experiment on the hydrogel sample, recording a curve graph of the change of the tensile force sensor along with time, and finally establishing a relation between the humidity and the stress.
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| CN202010590182.8A CN111811935A (en) | 2020-06-24 | 2020-06-24 | Hydrogel stretching environment moisturizing device and chemical-mechanical coupling stretching test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116879048A (en) * | 2023-09-01 | 2023-10-13 | 张家港宝翔机械有限公司 | Tensile detection equipment and method for PVC glove production and processing |
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