Identification equipment for silicone sealant doped with white oil

Abstract

The utility model relates to the technical field, and discloses identification equipment for silicone sealant doped with white oil, which comprises a working table, a cover plate is rotatably connected onto the working table, an air inlet fan is mounted on the bottom side of the working table, an air exhaust fan is mounted on the rear side wall of the working table, a fixing ring is mounted on the rear side of the air exhaust fan, and the cover plate is rotatably connected onto the working table. An arc-shaped plate is arranged on the fixing ring, and a filter element is arranged in the arc-shaped plate. An air inlet fan is installed on the lower side table top of the infrared spectrum device and the thermal weight loss detection device installed on the workbench, and an air exhaust fan is installed on a baffle behind the infrared spectrum device and the thermal weight loss detection device. When a spectrum detection chamber and a thermal weight loss detection chamber in the infrared spectrum equipment and the thermal weight loss detection equipment are used for detecting a sample, an air inlet fan and an air exhaust fan are started to discharge harmful gas generated during detection, and the harmful gas can be filtered and purified through a filter element inserted into a fixing ring during discharge; and finally, the air is guided out and discharged through the flow guide pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone sealant identification, in particular to an identification device for silicone sealant mixed with white oil. Background Art

[0002] Glass curtain walls have only been around for less than 20 years in my country, but their distinctive character and aesthetic qualities have shaped a vibrant and diverse urban landscape. Silicone weathering sealants, used for curtain wall bonding, play a crucial role in building curtain wall assembly due to their excellent adhesion and weather resistance. However, with the increasing popularity of glass curtain walls, production has rapidly increased, leading to a wide range of quality sealants on the market. Furthermore, in recent years, with intensified price competition in the construction market, many companies have prioritized price over quality. Some curtain wall projects have even resorted to the widespread use of ultra-cheap, low-quality silicone sealants filled with white oil, often referred to as white oil sealants.

[0003] Because white oil is a low-molecular mineral oil, it easily evaporates when used in the sealant. Over time, this can cause the sealant to become structural, leading to cracking in the glass joint sealant and oil leakage and failure of insulating glass units. This can also jeopardize the quality of curtain wall glass bonding and sealing, raising concerns about the safety and durability of curtain walls. If silicone sealant containing white oil is used in insulating glass, it can cause bulges and flow in the insulating glass, as well as rainbow effects on low-emissivity glass, causing significant damage to the insulating glass. When used in insulating glass, white oil-based sealant can dissolve the butyl rubber, the first sealant in the insulating glass, causing leakage, water ingress, and bulges and flow of the butyl rubber.

[0004] The current method for identifying silicone sealants containing white oil is to use a combination of infrared spectroscopy and thermogravimetric analysis. However, these instruments may release gaseous products during sample analysis. These gaseous products may react with other components in the sample, interfere with test results, and potentially contain harmful substances, posing a risk to researchers. Therefore, those skilled in the art have provided an identification device for silicone sealants containing white oil to address the issues raised in the background art. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the utility model provides an identification device for silicone sealant mixed with white oil to solve the problem that when infrared spectroscopy and thermal gravimetric analysis instruments analyze samples, samples may release gas products. These gas products may react with other components in the test sample or interfere with the test results, and may contain harmful substances, causing harm to researchers.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: an identification device for silicone sealant mixed with white oil, comprising a workbench, on which an infrared spectroscopy device and a thermogravimetric detection device are installed, the infrared spectroscopy device is provided with a spectroscopy detection chamber, and a first operating device is provided on one side of the infrared spectroscopy device, the thermogravimetric detection device is provided with a thermogravimetric detection chamber, and a second operating device is provided on one side of the thermogravimetric detection device. During detection, the infrared spectroscopy device and the thermogravimetric detection device are used together as two analytical instruments for identification.

[0009] Preferably, a cover plate is rotatably connected to the workbench, an air intake fan is installed on the bottom side of the workbench, an exhaust fan is installed on the rear side wall of the workbench, a fixing ring is installed on the rear side of the exhaust fan, an arc-shaped plate is provided on the fixing ring, a filter element is provided in the arc-shaped plate, and a guide pipe is connected to the rear side of the fixing ring.

[0010] Preferably, a slot is provided on the fixing ring, the arc plate is plugged into the slot, buckles are installed on both sides of the fixing ring, the fixing ring is connected to the arc plate through the buckles, and the arc plate is fixed to the fixing ring through the buckles, which is also convenient for later disassembly and assembly.

[0011] Preferably, an arc-shaped clamping strip is installed on the inner wall of the arc-shaped plate, and an arc-shaped clamping block is installed on the outer wall of the filter element. The filter element is rotated and plugged into the arc-shaped clamping block and the arc-shaped clamping strip. The filter element can be rotated to clamp the arc-shaped clamping block and the arc-shaped clamping strip, so that it is convenient and quick to replace the filter element later.

[0012] (3) Beneficial effects

[0013] Compared with the prior art, the present invention provides an identification device for silicone sealant mixed with white oil, which has the following beneficial effects:

[0014] By design, an air intake fan is installed on the lower table of the infrared spectrometer and the thermal gravimetric test equipment installed on the workbench, and an exhaust fan is installed on the rear baffle of the infrared spectrometer and the thermal gravimetric test equipment. Therefore, when the spectrum detection chamber and the thermal gravimetric test chamber in the infrared spectrometer and the thermal gravimetric test equipment are testing samples, the cover and the workbench can be closed, and then the air intake fan and the exhaust fan are started to discharge the harmful gases generated during the detection. During the discharge, the harmful gases can be filtered and purified by the filter element inserted in the fixed ring, and finally discharged through the guide pipe. The filter element is plugged into the fixed ring through an arc plate, which is convenient for later replacement of the filter element, avoiding the problem that these gas products may react with other components in the test sample or interfere with the test results, and may contain harmful substances, causing harm to researchers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of an identification device for silicone sealant mixed with white oil provided in an embodiment of the present application.

[0016] Figure 2 It is a structural schematic diagram of an infrared spectroscopy device and a thermogravimetric detection device for identifying white oil-doped silicone sealant provided in an embodiment of the present application.

[0017] Figure 3 This is a structural schematic diagram of an air intake fan in an identification device for silicone sealant mixed with white oil provided in an embodiment of the present application.

[0018] Figure 4 This is an identification device for silicone sealant mixed with white oil provided in the embodiment of the present application. Figure 3 A magnified view of the structure.

[0019] Figure 5 This is an identification device for silicone sealant mixed with white oil provided in the embodiment of the present application. Figure 3 Enlarged view of the structure at point B.

[0020] In the figure: 1. Workbench; 2. Infrared spectroscopy equipment; 201. Spectral detection chamber; 202. First operating equipment; 3. Thermal gravimetric detection equipment; 301. Thermal gravimetric detection chamber; 302. Second operating equipment; 4. Cover plate; 5. Air inlet fan; 6. Exhaust fan; 7. Fixing ring; 8. Slot; 9. Arc plate; 10. Arc clip; 11. Filter element; 12. Arc clip block; 13. Buckle; 14. Flow guide tube. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides a technical solution, an identification device for silicone sealant mixed with white oil, please refer to Figure 1 、 Figure 2 , including a workbench 1, on which an infrared spectrometer 2 and a thermogravimetric detection device 3 are installed, the infrared spectrometer 2 is provided with a spectrometric detection chamber 201, and a first operating device 202 is provided on one side of the infrared spectrometer 2, the thermogravimetric detection device 3 is provided with a thermogravimetric detection chamber 301, and a second operating device 302 is provided on one side of the thermogravimetric detection device 3. During detection, the infrared spectrometer 2 and the thermogravimetric detection device 3 are used together for identification.

[0023] See also Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 , the workbench 1 is rotatably connected to a cover plate 4, an air inlet fan 5 is installed on the bottom side of the workbench 1, an exhaust fan 6 is installed on the rear side wall of the workbench 1, a fixing ring 7 is installed on the rear side of the exhaust fan 6, an arc-shaped plate 9 is provided on the fixing ring 7, a filter element 11 is provided in the arc-shaped plate 9, a guide tube 14 is connected to the rear side of the fixing ring 7, a slot 8 is opened on the fixing ring 7, the arc-shaped plate 9 is plugged into the slot 8, and buckles 13 are installed on both sides of the fixing ring 7, the The fixing ring 7 is connected to the arc plate 9 by a buckle 13, and the arc plate 9 is fixed to the fixing ring 7 by the buckle 13, which is also convenient for later disassembly and assembly. An arc-shaped clamping strip 10 is installed on the inner wall of the arc plate 9, and an arc-shaped clamping block 12 is installed on the outer wall of the filter element 11. The filter element 11 is rotatably connected with the arc-shaped clamping strip 10 through the arc-shaped clamping block 12. The filter element 11 can be connected with the arc-shaped clamping strip 10 by rotating the arc-shaped clamping block 12, so that it is convenient and quick to replace the filter element 11 later.

[0024] In this application, the addition of white oil to silicone sealant will cause great damage to the quality of the sealant and its use. Silicone sealant with high white oil content can be identified by smell and volatile content measurement. For the quality assessment of silicone sealant, the national standard 16776-2005 (silicone structural sealant for construction) stipulates that volatile content measurement should be carried out under the condition of 90±2℃, and silicone sealant with a content of no more than 10% is qualified. The range specified in this standard is too large. If a small amount of white oil is added to the silicone sealant, such as less than 5%, it cannot be detected.

[0025] The identification equipment for silicone sealants mixed with white oil includes infrared spectroscopy equipment and thermal gravimetric testing equipment. The two analytical instruments, infrared spectroscopy and thermal gravimetric testing, are used together for identification. Both qualitative and quantitative testing can be performed. The identification method is as follows:

[0026] 1. Perform swelling or extraction tests on silicone sealant to obtain swelling liquid or extract, and then perform infrared characterization on the swelling liquid or extract to qualitatively determine whether the silicone sealant contains white oil;

[0027] 2. Thermogravimetric characterization of silicone sealant can quantitatively determine whether there is white oil in the silicone sealant;

[0028] 3. Identify the silicone sealant mixed with white oil by combining the characterization results of step 1 and step 2. The present invention enables us to quickly and accurately identify inferior and unqualified silicone sealants during the use of silicone sealants.

[0029] Professional measurement methods of the instruments and equipment used.

[0030] Implementation steps:

[0031] 1. Perform swelling or extraction test on silicone sealant to obtain swelling liquid or extract, and then perform infrared characterization on the swelling liquid or extract. If the swelling liquid or extract is between 710 and 732 cm ～1 1370~1390cm ～1 、2915~2935cm ～1 、2950~2970cm ～1 1450~1470cm ～1 The presence of at least three absorption peaks can qualitatively determine that the silicone sealant contains white oil;

[0032] 2. Perform thermogravimetric characterization on the silicone sealant. If weight loss occurs at 120-160°C, it can be quantitatively determined that the silicone sealant contains white oil.

[0033] 3. Combining the characterization results of step 1 and step 2, the silicone sealant mixed with white oil was identified.

[0034] The solvent used in the swelling test is any one of toluene, acetone, tetrahydrofuran or cyclohexane.

[0035] The thermogravimetric characterization method in step 3 is to increase the temperature from 20 to 50°C at a rate of 50 to 160°C / min to 200 to 220°C under a nitrogen atmosphere, maintain this temperature for 2 to 5 minutes, and then increase the temperature to 800 to 900°C at a rate of 50 to 160°C / min in an oxygen atmosphere.

[0036] A corresponding first operating device 202 and a second operating device 302 are provided on one side of the infrared spectrometer 2 and the thermal gravimetric detection device 3. Harmful gases may be generated during the use of the infrared spectrometer 2 and the thermal gravimetric detection device 3. Therefore, in the present invention, an air inlet fan 5 is installed on the lower table of the infrared spectrometer 2 and the thermal gravimetric detection device 3 installed on the workbench 1, and an exhaust fan 6 is installed on the rear baffle of the infrared spectrometer 2 and the thermal gravimetric detection device 3. Therefore, when the spectrum detection chamber 201 and the thermal gravimetric detection chamber 301 in the infrared spectrometer 2 and the thermal gravimetric detection device 3 are testing samples, the cover 4 and the workbench 1 can be closed, and then the air inlet fan 5 and the exhaust fan 6 can be started to discharge the harmful gases generated during the detection. During the discharge, the harmful gases can be filtered and purified by the filter element 11 inserted in the fixing ring 7, and finally discharged through the guide pipe 14;

[0037] A slot 8 is provided on the upper side of the fixing ring 7, and an arc-shaped plate 9 is provided in the slot 8. An arc-shaped clamping strip 10 is installed on the inner side of the arc-shaped plate 9, and an arc-shaped clamping block 12 is installed on the outer wall of the filter element 11. The filter element 11 can be rotated to connect the arc-shaped clamping block 12 with the arc-shaped clamping strip 10, so that it is convenient and quick to replace the filter element 11 later. The arc-shaped plate 9 is fixed to the fixing ring 7 by a buckle 13, which is also convenient for disassembly and assembly later.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] In this document, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly specified, ordinary technicians in this field can understand the specific meanings of the above terms in this utility model according to specific circumstances.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An identification device for silicone sealant mixed with white oil, comprising a workbench (1), characterized in that: The workbench (1) is equipped with an infrared spectroscopy device (2) and a thermogravimetric detection device (3); the infrared spectroscopy device (2) is provided with a spectroscopy detection chamber (201); a first operating device (202) is provided on one side of the infrared spectroscopy device (2); the thermogravimetric detection device (3) is provided with a thermogravimetric detection chamber (301); and a second operating device (302) is provided on one side of the thermogravimetric detection device (3); A cover plate (4) is rotatably connected to the workbench (1), an air inlet fan (5) is installed on the bottom side of the workbench (1), an exhaust fan (6) is installed on the rear side wall of the workbench (1), a fixing ring (7) is installed on the rear side of the exhaust fan (6), an arc plate (9) is provided on the fixing ring (7), a filter element (11) is provided in the arc plate (9), and a guide pipe (14) is connected to the rear side of the fixing ring (7).

2. The identification device for silicone sealant mixed with white oil according to claim 1, characterized in that: The fixing ring (7) is provided with a slot (8), the arc-shaped plate (9) is plugged into the slot (8), buckles (13) are installed on both sides of the fixing ring (7), and the fixing ring (7) is connected to the arc-shaped plate (9) through the buckles (13).

3. The identification device for silicone sealant mixed with white oil according to claim 1, characterized in that: An arc-shaped clamping strip (10) is installed on the inner wall of the arc-shaped plate (9), and an arc-shaped clamping block (12) is installed on the outer wall of the filter element (11).

4. The identification device for silicone sealant mixed with white oil according to claim 3, characterized in that: The filter element (11) is rotatably plugged into the arc-shaped clamping strip (10) via the arc-shaped clamping block (12).

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