CN210571776U - Detection device for thermoplastic plastics - Google Patents
Detection device for thermoplastic plastics Download PDFInfo
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- CN210571776U CN210571776U CN201920992767.5U CN201920992767U CN210571776U CN 210571776 U CN210571776 U CN 210571776U CN 201920992767 U CN201920992767 U CN 201920992767U CN 210571776 U CN210571776 U CN 210571776U
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Abstract
The utility model relates to the technical field of thermoplastic detection, in particular to a detection device for thermoplastic plastics, which comprises a detection box body and a test stand; the upper portion of detecting the box is provided with the oil tank, the oil tank is by support piece and set up in dull and stereotyped, the test stand surround the box structure that forms of support piece upper and lower both sides. The utility model discloses a sample bracing piece slides about the sample backup pad and drives the sample and reciprocate, and still slidable mounting has the depression bar on the flat board, and the lower extreme fixed mounting of depression bar has the pressure head, places the weight in the inside of weight tray, makes the depression bar pierce the inside of treating the sample that detects through the pressure head pushing down, the temperature of sample when utilizing temperature sensor to detect experimental to obtain test data, simple structure not only, convenient to use, measurement accuracy is high moreover, and the test result is accurate effective.
Description
Technical Field
The utility model relates to a thermoplasticity detects technical field, specifically is a detection device for thermoplastic.
Background
The Vicat softening point is measured by heating thermoplastic plastics in specific liquid heat transfer medium under a certain load and at a certain constant speedUnder the condition, the sample is 1mm2The temperature at which the needle is pressed in 1 mm. The method is only suitable for most thermoplastics, and the experimentally determined Vicat softening point is suitable for controlling the quality and is used as an index for identifying the thermal performance of new varieties, but does not represent the use temperature of the material.
The heat distortion temperature is a parameter expressing the relationship between heat and distortion of the measured object. The heat distortion temperature was measured by recording the temperature under a specified load and deformation. The heat resistance of a polymer or a polymer material is measured by applying a certain load to the polymer or the polymer, raising the temperature at a certain speed, and measuring the corresponding temperature when the specified deformation is reached.
The thermoplastic detection device in the prior art is complex in structure, inconvenient to operate, poor in reliability and low in detection quality.
Therefore, in view of the above situation, there is an urgent need to develop a detection device for thermoplastics to overcome the shortcomings in the current practical application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a detection device for thermoplastic to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a detection device for thermoplastic plastics comprises a detection box body and a test rack; the upper part of the detection box body is provided with an oil tank, and the oil tank is of a box body structure which is surrounded by a support piece, flat plates arranged on the upper side and the lower side of the support piece and a test frame; the test stand comprises a sample support plate and a plurality of sample support rods arranged at the upper part of the sample support plate, the sample support rods are slidably arranged on the sample support plate, and a sample to be detected is placed above the sample support rods; a pressure rod is slidably mounted on the flat plate, a pressure head is fixedly mounted at the lower end of the pressure rod, a weight tray is mounted at the upper end of the pressure rod, and weights are contained in the weight tray; the outside of detecting the box still is provided with the temperature sensor who is used for carrying out temperature detection to the sample.
As a further aspect of the present invention: and a handle for taking and placing the test rack is arranged on the flat plate.
As a further aspect of the present invention: the pressure head comprises a pressure pin type and a pressure head type.
As a further aspect of the present invention: the flat plate is also fixedly provided with a sensor fixing frame, the sensor fixing frame is fixedly provided with a displacement sensor, and a detection probe of the displacement sensor is abutted against the weight.
As a further aspect of the present invention: and the flat plate is also provided with a clamp handle for lifting up or putting down the weight tray.
Compared with the prior art, the beneficial effects of the utility model are that: the test rack in the detection box body of the utility model comprises a sample support plate and a plurality of sample support rods arranged on the upper part of the sample support plate, the sample support rods are arranged on the sample support plate in a sliding way, the sample supporting rod slides up and down on the sample supporting plate to drive the sample to move up and down, the flat plate is also provided with a pressure rod in a sliding way, the lower end of the pressure rod is fixedly provided with a pressure head, the upper end of the pressure rod is provided with a weight tray, weights are contained in the weight tray, weights are placed in the weight tray, so that the pressure rod penetrates into the sample to be detected through the pressing head, the pressing distance of the pressure head is adjusted by changing the mass of the weight, the temperature of the sample during the test is detected by the temperature sensor, thereby obtain test data, compare in current device, not only simple structure, convenient to use, measurement accuracy is high moreover, and the test result is accurate effective.
Drawings
FIG. 1 is a schematic view of a detection apparatus for thermoplastics.
In the figure: 1-flat plate, 2-handle, 3-sensor fixing frame, 4-displacement sensor, 5-weight, 6-clamp handle, 7-weight tray, 8-pressure rod, 9-pressure head, 10-supporting piece, 11-sample, 12-sample supporting rod and 13-sample supporting plate.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1, in an embodiment of the present invention, a device for detecting thermoplastic plastics includes a detection box and a test rack; the upper part of the detection box body is provided with an oil tank for storing test media and providing conditions for a test, and the oil tank is of a box body structure which is surrounded by a support piece 10, flat plates 1 arranged on the upper side and the lower side of the support piece 10 and a test rack; the test rack comprises a sample support plate 13 and a plurality of sample support rods 12 arranged on the upper part of the sample support plate 13, the sample support rods 12 are slidably arranged on the sample support plate 13, a sample 11 to be detected is placed above the sample support rods 12, and the sample support plate 13 is driven to move up and down by the up-and-down sliding of the sample support rods 12;
a temperature sensor for detecting the temperature of the sample 11 is arranged on the outer side of the detection box body;
specifically, in this embodiment, a driver for driving the sample support rod 12 to slide up and down is disposed on the sample support plate 13, the driver may be a device having a telescopic function in the prior art, and a test rack lifting/lowering/stopping button for controlling the driver to operate is further disposed on the outer side of the detection box;
specifically, in this embodiment, a handle 2 for taking and placing the test rack is arranged on the flat plate 1;
a pressure rod 8 is slidably mounted on the flat plate 1, a pressure head 9 is fixedly mounted at the lower end of the pressure rod 8, a weight tray 7 is mounted at the upper end of the pressure rod 8, weights 5 are contained in the weight tray 7, the weights 5 are placed in the weight tray 7, the pressure rod 8 is pressed down to penetrate into a sample 11 to be detected through the pressure head 9, and the distance for pressing down the pressure head 9 is adjusted by changing the mass of the weights 5;
in order to ensure that the indenter 9 is suitable for vicat experiments and thermal deformation experiments, the indenter 9 comprises an indenter type and an indenter type;
a sensor fixing frame 3 is fixedly arranged on the flat plate 1, a displacement sensor 4 is fixedly arranged on the sensor fixing frame 3, a detection probe of the displacement sensor 4 is abutted against a weight 5, and when the weight 5 presses a pressure head 9 downwards through a pressure rod 8 and penetrates into a sample 11, the displacement sensor 4 detects the pressing distance;
specifically, in this embodiment, a clamp handle 6 for lifting or lowering a weight tray 7 is further disposed on the flat plate 1.
Example 2
A method of using a device for the detection of thermoplastics comprising the steps of:
s1, sample preparation:
A) for the Vicat softening point test, the test specimens are to comply with the relevant provisions in the Standard GB/T1633-2000 "determination of Vicat Softening Temperature (VST) of thermoplastics" on the test specimens. At least two samples are used for each sample to be tested, the thickness of each sample is 3-65mm, the side length of each sample is 10mm, each sample is square or circular, the diameter of each sample is 10mm, the surface of each sample is flat and parallel, and no flash exists. The sample should be prepared as specified for the material under test, and if not, any suitable method may be used to prepare the sample;
B) for the load deflection test, the test specimens are to comply with the relevant provisions in the Standard GB/T1634.1-2004 "determination of the Plastic load deflection temperature part 1: general test method" for test specimens. At least two samples of the same kind are tested, the samples are splines with rectangular cross sections, the length l, the width b and the thickness h of the splines meet the requirement that l > b > h, the specific size is specified by relevant parts of GB/T1634-2004, and the thickness and the width of the middle part (accounting for 1/3 of the length) of each sample cannot deviate more than 2% of the average value everywhere. All samples should be free of warping due to thickness asymmetry. If the specimen has been bent when it is unloaded, the calibration should be carried out by applying a load to the two opposite surfaces of the specimen;
s2 checking sample size
A) For the vicat softening point test, all specimens tested at the same time should be uniform in thickness. Before the test, a vernier caliper (or other applicable testing instruments) is used for measuring the thickness (accurate to 0.01mm) of the test sample and recording the thickness, so that the thickness is convenient to input during the test;
B) for the load deflection test, all specimens tested at the same time should be uniform in thickness. Before the test, a vernier caliper (or other applicable inspection instruments) is used for measuring the length l, the width b and the thickness h of the test sample and recording the length, the width b and the thickness h (accurate to 0.01mm), so that parameters such as the weight of a weight to be loaded can be conveniently input and calculated during the test;
s3, startup online
A) Sequentially turning on a power switch of the equipment according to the starting sequence of the computer-host, and preheating the equipment for ten minutes;
B) starting computer software to connect the software with the host;
s3, placing the sample
Pressing the "Up" button, raising the sample holder, and placing the sample under the unloaded plunger or indenter
A) For the Vicat softening point test, a sample is horizontally placed under a pressure pin, the distance between a pressure head and the edge of the sample is not less than 3mm, and the surface of the sample contacted with the base of the instrument is smooth;
B) for the load thermal deformation test, the sample is horizontally or laterally placed under the pressure head according to the test conditions, and the sample is horizontally moved so that the pressure head is positioned at the midpoint of the sample;
s4 setting parameters
Filling relevant parameters in the software according to the number of samples, test conditions (load, heating rate and the like), sample size and the like
A) For Vicat softening point test, the load (weight) is 10N or 50N, and the upper limit of displacement is 1 mm;
B) for the load thermal deformation test, the load (weight) is calculated by software after inputting the length l, the width b, the thickness h and the distance between the support rollers of the sample, and the upper limit of the displacement is calculated according to the formulas (5) and (6) in GB/T1634.1-204;
s5, loading
Placing a sufficient weight on a weight tray according to the weight of the weight calculated in the software, and moving a dial indicator head to a proper position (4-5mm) on the weight;
s6, start test
Under the conditions that the sample is placed correctly and the parameter setting is correct, pressing down a 'down' button, lowering the sample frame, clearing the dial indicator in sequence, and finally clicking 'confirmation' on software to start a test;
s7, data processing
After the test is finished, generating various curves and test reports according to the obtained test data;
s8, cooling and ending
When the displacement of each pressure pin/pressure head reaches the upper limit of the displacement set by the software, the test is automatically stopped, the host automatically stops heating, natural cooling or turning on a water source switch for quick cooling can be selected at the moment, after the temperature is cooled to the room temperature, the sample frame can be lifted, the weight and the sample are taken down, the host and the computer power supply are closed, and the test is finished.
The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (5)
1. A detection device for thermoplastic plastics comprises a detection box body and a test rack; the upper part of the detection box body is provided with an oil tank, and the oil tank is of a box body structure which is surrounded by a support piece (10), flat plates (1) arranged on the upper side and the lower side of the support piece (10) and a test rack; the device is characterized in that the test stand comprises a sample support plate (13) and a plurality of sample support rods (12) arranged at the upper part of the sample support plate (13), the sample support rods (12) are slidably arranged on the sample support plate (13), and a sample (11) to be detected is placed above the sample support rods (12); a pressure rod (8) is slidably mounted on the flat plate (1), a pressure head (9) is fixedly mounted at the lower end of the pressure rod (8), a weight tray (7) is mounted at the upper end of the pressure rod (8), and weights (5) are contained in the weight tray (7); the outer side of the detection box body is also provided with a temperature sensor for detecting the temperature of the sample (11).
2. The apparatus for detecting thermoplastics according to claim 1, wherein a handle (2) for taking and placing the test rack is arranged on the plate (1).
3. The device according to claim 1, characterized in that the indenter (9) comprises an indenter type and an indenter head type.
4. The detection device for thermoplastic plastics according to any one of claims 1-3, characterized in that the flat plate (1) is further fixedly provided with a sensor fixing frame (3), the sensor fixing frame (3) is fixedly provided with a displacement sensor (4), and a detection probe of the displacement sensor (4) abuts against a weight (5).
5. The device for the detection of thermoplastics according to claim 1, wherein the plate (1) is further provided with a gripper handle (6) for lifting or lowering a weight tray (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992767.5U CN210571776U (en) | 2019-06-28 | 2019-06-28 | Detection device for thermoplastic plastics |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992767.5U CN210571776U (en) | 2019-06-28 | 2019-06-28 | Detection device for thermoplastic plastics |
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| CN210571776U true CN210571776U (en) | 2020-05-19 |
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| CN201920992767.5U Active CN210571776U (en) | 2019-06-28 | 2019-06-28 | Detection device for thermoplastic plastics |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114624146A (en) * | 2022-02-17 | 2022-06-14 | 昆山力兆塑胶有限公司 | Performance detection process and device for plastic particle production |
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2019
- 2019-06-28 CN CN201920992767.5U patent/CN210571776U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114624146A (en) * | 2022-02-17 | 2022-06-14 | 昆山力兆塑胶有限公司 | Performance detection process and device for plastic particle production |
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