CN214373760U - Sample preparation device for testing dispersity of pigment or carbon black in polyolefin product - Google Patents
Sample preparation device for testing dispersity of pigment or carbon black in polyolefin product Download PDFInfo
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- CN214373760U CN214373760U CN202022842435.4U CN202022842435U CN214373760U CN 214373760 U CN214373760 U CN 214373760U CN 202022842435 U CN202022842435 U CN 202022842435U CN 214373760 U CN214373760 U CN 214373760U
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Abstract
The application discloses a sample preparation device for testing the dispersion degree of pigment or carbon black in a polyolefin product, which comprises a tabletting unit, wherein the tabletting unit comprises an air cylinder, a thimble and a mould cavity seat, the left side and the right side of the mould cavity seat are symmetrically provided with cylindrical guide rails, and an upper pressing plate, a lower pressing plate, a glass slide supporting plate and a hot pressing device are arranged from top to bottom through the cylindrical guide rails; the ejector pin is arranged right above the upper pressing plate, circular through holes are formed in the upper pressing plate and the lower pressing plate, and a feed opening is formed in the top of the die cavity seat; when the prefabricated test piece is placed between the upper pressing plate and the lower pressing plate, the ejector pin can penetrate through the circular through holes of the upper pressing plate and the lower pressing plate downwards, and the corresponding cut circular test piece falls on the glass slide supporting plate through the feed opening at the top of the die cavity seat; the round test piece on the glass slide supporting plate can be subjected to hot-pressing treatment by the hot-pressing device. The device is simple in structure, can be used for sample preparation of pigment or carbon black dispersity test in polyolefin products, is simple in operation steps and high in efficiency, and the prepared sample meets the national standard.
Description
Technical Field
The application relates to the field of polyolefin product pigment or carbon black dispersity detection, in particular to a sample preparation device for testing the dispersity of pigment or carbon black in polyolefin pipes, pipe fittings and mixing materials.
Background
The dispersion degree test of the pigment or the carbon black is to ensure that the added pigment or the carbon black and the like are fully dispersed in the base resin, and the added pigment or the carbon black and the like reach fine particles and uniform mixing so as to effectively avoid stress concentration in the product and obtain the product meeting the use requirement.
The national standard requires that the pigment or carbon black dispersion size grade is less than or equal to grade 3, and the national detection agency reports that the physical and mechanical properties of polyolefin products are seriously affected by unqualified pigment or carbon black dispersion size grade, so that the quality control of the polyolefin products is necessary.
Test for testing the Dispersion of pigments or carbon blacks in polyolefin pipes, pipes and mixes in accordance with the national Standard GB/T18251-2019 for determining the dispersion of pigments or carbon blacks in polyolefin pipes, pipes and mixes by slicing or heating a small number of samples taken from the pipes, pipes or mixes and pressing the samples between glass slides, observing the samples with a microscope, and determining the size of the particles and particle clusters, the size grade of the dispersion being determined by the average of 6 samples.
According to the requirements of the national standard GB/T18251-2019, a high-precision slicer is required for preparing samples by the slicing method, samples with the thickness of (20 +/-10) mu m can be cut at least, the equipment cost is high, and a large cost pressure is brought to enterprises, so the tabletting method is generally adopted by production enterprises. The tabletting method can finish sample preparation only by an art knife, tweezers, a balance, an oven and a glass slide, but the sample preparation steps of the tabletting method are complicated, the efficiency is low, and the prepared sample has defects, so that the accuracy of test data is influenced. Therefore, there is an urgent need in our laboratory to develop a testing apparatus for the preparation of samples for the dispersion testing of polyolefin pipes, tubes and compound pigments or carbon black.
Disclosure of Invention
In view of the above technical problems in the prior art, the present application aims to provide a sample preparation device for testing the dispersion degree of pigment or carbon black in polyolefin products.
The sample preparation device for testing the dispersion degree of the pigment or the carbon black in the polyolefin product is characterized by comprising a tabletting unit, wherein the tabletting unit comprises an air cylinder, an ejector pin and a mold cavity seat, the ejector pin and the mold cavity seat are arranged on the air cylinder, cylindrical guide rails are symmetrically arranged on the left side and the right side of the mold cavity seat, and an upper pressing plate, a lower pressing plate, a glass slide supporting plate and a hot pressing device are arranged from top to bottom through the cylindrical guide rails; the upper pressing plate is arranged on the cylindrical guide rail in a sliding mode, the lower pressing plate is arranged on the top of the mold cavity seat in a fitting mode, the glass slide supporting plate and the hot pressing device are arranged in a cavity of the mold cavity seat, and the glass slide supporting plate is fixed on the cylindrical guide rail;
the ejector pin on the air cylinder is arranged right above the upper pressing plate, round through holes matched with the ejector pin are formed in the upper pressing plate and the lower pressing plate, and a feed opening is formed in the top of the die cavity seat; when the prefabricated test piece is placed between the upper pressing plate and the lower pressing plate, the ejector pin can directly penetrate through the circular through holes of the upper pressing plate and the lower pressing plate downwards under the driving of the air cylinder, and meanwhile, the corresponding cut circular test piece falls on the glass slide supporting plate through the feed opening at the top of the mold cavity seat;
the round test piece on the glass slide supporting plate can be subjected to hot-pressing treatment by the hot-pressing device.
The sample preparation device for testing the dispersity of the pigment or the carbon black in the polyolefin product is characterized in that the tabletting unit further comprises a base and a cylinder mounting seat, the die cavity seat and the cylinder mounting seat are close to each other and are arranged on the base together, and the cylinder is fixedly arranged on the cylinder mounting seat.
The sample preparation device for testing the dispersion degree of the pigment or the carbon black in the polyolefin product is characterized in that the hot-pressing device comprises a heating pressing plate and an electric heating plate which are arranged on a cylindrical guide rail from top to bottom, the heating pressing plate is arranged on the cylindrical guide rail in a sliding mode, the electric heating plate is arranged on the bottom wall of a cavity of a mold cavity seat in a fitting mode, and a heating resistance wire is arranged inside the heating pressing plate.
The sample preparation device for testing the dispersity of the pigment or the carbon black in the polyolefin product is characterized by further comprising a sample preparation mold, wherein the sample preparation mold comprises a sample preparation upper mold and a sample preparation lower mold, sample powder is placed in the sample preparation lower mold, the sample preparation upper mold is matched and covered on the sample preparation lower mold, and then the sample preparation upper mold is subjected to hot pressing in the hot pressing device to form the prefabricated test piece.
Compared with the prior art, the beneficial effect that this application was got is:
the device is simple in structure and can be well used for the sample preparation process of the dispersion degree test of the pigment or the carbon black in the polyolefin product, the operation steps in the sample preparation process are simple, the operation efficiency is high, the prepared sample meets the national standard, and the yield is high.
Drawings
FIG. 1 is a schematic view of the construction of a sheeting unit of the present application;
FIG. 2 is a schematic structural view of a sample preparation mold according to the present application;
in the figure: 1-base, 2-mould cavity base, 3-cylindrical guide rail, 4-lower press plate, 5-upper press plate, 6-air cylinder, 7-thimble, 8-heating press plate, 9-glass slide supporting plate, 10-electric heating plate, 11-heating press plate opening button, 12-heating press plate temperature control display screen, 13-air cylinder button, 14-sample preparation lower mould and 15-sample preparation upper mould.
Detailed Description
The present invention is further illustrated by the following examples, which should not be construed as limiting the scope of the invention.
Example (b): compare FIGS. 1-2
A sample preparation device for testing the dispersity of pigment or carbon black in a polyolefin product comprises a tabletting unit and a sample preparation mold.
The tabletting unit comprises a cylinder 6, a thimble 7 arranged on the cylinder 6 and a mould cavity seat 2, wherein the left side and the right side of the mould cavity seat 2 are symmetrically provided with a cylindrical guide rail 3, and an upper pressing plate 5, a lower pressing plate 4, a glass slide supporting plate 9 and a hot pressing device are arranged from top to bottom through the cylindrical guide rail 3; the upper pressing plate 5 is arranged on the cylindrical guide rail 3 in a sliding mode, the lower pressing plate 4 is arranged on the top of the mold cavity seat 2 in a fitting mode, the glass slide supporting plate 9 and the hot pressing device are installed in a cavity of the mold cavity seat 2, and the glass slide supporting plate 9 is fixed on the cylindrical guide rail 3.
The ejector pins 7 on the air cylinder 6 are arranged right above the upper pressing plate 5, circular through holes matched with the ejector pins 7 are formed in the upper pressing plate 5 and the lower pressing plate 4, and a feed opening is formed in the top of the die cavity seat 2; when the prefabricated test piece is placed between the upper pressing plate and the lower pressing plate, the ejector pin 7 can directly penetrate through the circular through holes of the upper pressing plate and the lower pressing plate downwards under the driving of the air cylinder 6, and meanwhile, the corresponding cut circular test piece falls on the glass slide supporting plate 9 through the feed opening at the top of the mold cavity seat 2; the round test piece on the slide glass supporting plate 9 can be processed by hot pressing through the hot pressing device.
In comparison with fig. 1, the tablet pressing unit further includes a base 1 and a cylinder mounting seat, the mold cavity seat 2 and the cylinder mounting seat are close to each other and are disposed on the base 1, and the cylinder 6 is fixedly disposed on the cylinder mounting seat.
Further, hot press unit of this application includes that top-down installs heating clamp plate 8 and electric heating plate 10 on cylindrical guide rail 3, heating clamp plate 8 slides and sets up on cylindrical guide rail 3, and the laminating of electric heating plate 10 is placed on the cavity diapire of mould chamber seat 2, and heating clamp plate 8 is inside to be provided with the heating resistor silk.
Referring to fig. 2, the sample preparation mold comprises a sample preparation upper mold 15 and a sample preparation lower mold 14, the sample powder is placed in the sample preparation lower mold 14, the sample preparation upper mold 15 is covered on the sample preparation lower mold 14 in a matching manner, and then the sample preparation upper mold is hot pressed in the hot pressing device, so that the above-mentioned prefabricated test piece can be formed.
As can be seen from a comparison of fig. 1, the device of the present application further includes a heating platen opening button 11, a cylinder button 13, and a heating platen temperature control display screen 12. The heating pressing plate 8 can be started to heat through the heating pressing plate opening button 11, and the heating temperature can be set through the heating pressing plate temperature control display screen 12.
In the device structure of this application, heating platen 8 can follow 3 freedom of cylinder guide rail and reciprocate, because heating platen 8 self counter weight, circular test block when on slide layer board 9 can pass through when hot press unit carries out hot pressing, after covering the glass cover with slide layer board 9, put into between heating platen 8 and the electric heating board 10. The heated platen 8 applies pressure directly by gravity to the circular test strip in the slide pallet 9.
The slide glass supporting plate 9 is fixed on the cylindrical guide rail 3 through screws and can not move freely. When the circular test piece received on the slide glass supporting plate 9 needs to be hot-pressed, the received circular test piece can be placed on another spare slide glass supporting plate 9 for subsequent hot-pressing treatment.
The upper press plate 5 can move up and down freely along the cylindrical guide rail 3. Referring to fig. 1, the number of the thimble 7 is 6, and 6 circular through holes having the same size as the thimble may be formed in the upper pressing plate 5 and the lower pressing plate 4, and the thimble can freely penetrate through the upper and lower pressing plates when being pushed down.
The upper and lower pressing plates are used for pressing a prefabricated test piece with the thickness of 0.5 mm.
After the cylinder button is started, the thimble moves downwards under the pushing of the cylinder, firstly passes through the upper pressure plate, acts on the prefabricated test piece placed between the upper pressure plate and the lower pressure plate, and then passes through 6 circular through holes corresponding to the lower pressure plate, and 6 wafer samples cut by the thimble fall on the glass slide supporting plate 9. And (3) detaching the glass slide supporting plate 9 from the cylindrical guide rail 3, covering a cover glass, then placing the glass slide supporting plate on the electric heating plate 10, closing the heating pressing plate 8, taking out the glass slide supporting plate after 10 minutes, and cooling to obtain a sample meeting the test requirement.
The upper and lower sample molds 15, 14 may be made of 304 stainless steel.
Example 1:
when the device of the application is used for preparing the sample, the working process is as follows:
weighing 2-3g of carbon black sample powder, placing the carbon black sample powder in a sample preparation lower die, and covering a sample preparation upper die 15 on a sample preparation lower die 14 in a matching manner to form a sample preparation die. Then, the sample preparation mold is placed between the heating pressing plate 8 and the electric heating plate 10, the temperature of the heating pressing plate 8 is 200 ℃, and the prefabricated test piece with the thickness of about 0.5mm is prefabricated under the action of the heating pressing plate and the gravity of the sample preparation upper mold 15. After the prefabricated test piece is prepared, taken out and cooled, the prefabricated test piece is taken out of a sample preparation mold and placed on a lower pressing plate 4, an upper pressing plate 5 is closed, a glass slide supporting plate 9 is installed under the lower pressing plate 4, a cylinder button is started, an ejector pin moves downwards under the pushing of a cylinder, 6 samples with the diameter of 1mm and the thickness of 0.5mm are cut out at the same time, the glass slide supporting plate 9 is carefully taken out, after a cover glass is covered, the glass slide supporting plate 9 is placed on an electric heating plate 10, the heating pressing plate is put down gently to heat, the glass slide supporting plate 9 is taken out and cooled after being heated for 10min, and finally, a qualified sample product is obtained.
The statements in this specification merely set forth a list of implementations of the inventive concept and the scope of the present invention should not be construed as limited to the particular forms set forth in the examples.
Claims (4)
1. A sample preparation device for testing the dispersity of pigment or carbon black in a polyolefin product is characterized by comprising a tabletting unit, wherein the tabletting unit comprises a cylinder (6), an ejector pin (7) arranged on the cylinder (6) and a mold cavity seat (2), the left side and the right side of the mold cavity seat (2) are symmetrically provided with cylindrical guide rails (3), and an upper pressing plate (5), a lower pressing plate (4), a glass slide supporting plate (9) and a hot pressing device are arranged from top to bottom through the cylindrical guide rails (3); the upper pressing plate (5) is arranged on the cylindrical guide rail (3) in a sliding mode, the lower pressing plate (4) is placed on the top of the mold cavity seat (2) in a fitting mode, the glass slide supporting plate (9) and the hot pressing device are installed in a cavity of the mold cavity seat (2), and the glass slide supporting plate (9) is fixed on the cylindrical guide rail (3);
an ejector pin (7) on the air cylinder (6) is arranged right above the upper pressing plate (5), circular through holes matched with the ejector pin (7) are formed in the upper pressing plate (5) and the lower pressing plate (4), and a feed opening is formed in the top of the die cavity seat (2); when the prefabricated test piece is placed between the upper pressing plate and the lower pressing plate, the ejector pin (7) can directly penetrate through the circular through holes of the upper pressing plate and the lower pressing plate downwards under the driving of the air cylinder (6), and meanwhile, the corresponding circular test piece is cut off and falls on the glass slide supporting plate (9) through the feed opening at the top of the mold cavity seat (2);
the round test piece on the glass slide supporting plate (9) can be processed by hot pressing through the hot pressing device.
2. The sample preparation device for testing the dispersity of the pigment or the carbon black in the polyolefin product according to claim 1, wherein the tabletting unit further comprises a base (1) and a cylinder mounting seat, the mold cavity seat (2) and the cylinder mounting seat are arranged on the base (1) in a close manner, and the cylinder (6) is fixedly arranged on the cylinder mounting seat.
3. The sample preparation device for the dispersity test of the pigment or the carbon black in the polyolefin product as claimed in claim 1, wherein the hot-pressing device comprises a heating pressing plate (8) and an electric heating plate (10) which are installed on the cylindrical guide rail (3) from top to bottom, the heating pressing plate (8) is slidably arranged on the cylindrical guide rail (3), the electric heating plate (10) is attached to the bottom wall of the cavity of the mold cavity base (2), and a heating resistance wire is arranged inside the heating pressing plate (8).
4. The sample preparation apparatus for testing the dispersibility of the pigment or the carbon black in the polyolefin product according to claim 1, further comprising a sample preparation mold comprising a sample preparation upper mold (15) and a sample preparation lower mold (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022842435.4U CN214373760U (en) | 2020-12-01 | 2020-12-01 | Sample preparation device for testing dispersity of pigment or carbon black in polyolefin product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022842435.4U CN214373760U (en) | 2020-12-01 | 2020-12-01 | Sample preparation device for testing dispersity of pigment or carbon black in polyolefin product |
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| Publication Number | Publication Date |
|---|---|
| CN214373760U true CN214373760U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022842435.4U Active CN214373760U (en) | 2020-12-01 | 2020-12-01 | Sample preparation device for testing dispersity of pigment or carbon black in polyolefin product |
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| Country | Link |
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| CN (1) | CN214373760U (en) |
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