Rapid detection device and detection method for polymer composite material plate

Abstract

The invention discloses a rapid detection device and detection method for a polymer composite material plate, and relates to the technical field of plate detection, and the rapid detection device comprises a weighing system, a dissolving system, a solid-liquid separation system, a high-temperature drying system and a monitoring analysis system which are used for treating samples in sequence; the dissolving system comprises a placing container containing a solvent capable of dissolving organic matters; the solid-liquid separation system comprises a solid-liquid separation mechanism for separating a solid-liquid mixture treated by the dissolving system; the high-temperature drying system comprises a heating box body, and a sample container for placing separated solids is arranged in the heating box body; the monitoring analysis system comprises an X-ray fluorescence spectrum probe; the weighing system can obtain the density of the sample, the weighing system, the dissolving system, the solid-liquid separation system and the high-temperature drying system can obtain the solid content in the board, the monitoring and analyzing system can obtain the components of the dried solid, the components of the composite board can be judged, and good detection accuracy is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of plate detection, and in particular to a rapid detection device and method for polymer composite plate. Background Art

[0002] In recent years, polymer composite materials, especially wood-plastic composite materials, have been widely used in prefabricated buildings, outdoor floors, interior decorative panels and other fields. Wood-plastic composite materials are a kind of composite materials that are extruded by blending wood powder, stone powder, calcium carbonate powder and other agricultural and forestry waste with thermoplastic resin (polyethylene or polyvinyl chloride) and engineering plastics.

[0003] Currently, there are many types of polymer composite materials on the market. Many businesses use inferior products to pass them off as good ones, which have poor mechanical properties, causing troubles for customers and disrupting the market environment. However, the existing equipment for testing composite materials mainly tests the consistency of color and flatness of the processed plates. It tests the surface quality of the product from the appearance, and cannot play the role of rapid product detection and product identification, and has certain limitations.

[0004] Therefore, people are in urgent need of a rapid detection device for polymer composite material plates that can detect the composition of the plates. Summary of the Invention

[0005] The purpose of the present invention is to provide a rapid detection device and method for polymer composite material plates to solve the problems existing in the above-mentioned prior art. After the sample is weighed, dissolved, solid-liquid separated and dried in sequence, the solid component is detected using an X-ray fluorescence spectrometer probe to determine the composition of the composite plate.

[0006] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides a rapid detection device for polymer composite material plates, comprising a weighing system, a dissolution system, a solid-liquid separation system, a high-temperature drying system and a monitoring and analysis system for processing samples in sequence; the dissolution system comprises a placement container for a solvent containing soluble organic matter; the solid-liquid separation system comprises a solid-liquid separation mechanism for separating the solid-liquid mixture processed by the dissolution system; the high-temperature drying system comprises a heating box, and a sample container for placing the separated solid is provided in the heating box; the monitoring and analysis system comprises an X-ray fluorescence spectrometer probe, and the X-ray fluorescence spectrometer probe is set corresponding to the dried solid in the sample container.

[0007] Preferably, the sample container and the placement container share a container.

[0008] Preferably, the weighing system includes a weight conduction mechanism and a mass sensor, the top end of the weight conduction mechanism extends into the heating box, and the bottom end abuts against the mass sensor outside the heating box, and the sample container is placed on the top end of the weight conduction mechanism.

[0009] Preferably, a support is provided at the bottom of the heating box, and the mass sensor is provided between the support and the heating box.

[0010] Preferably, a through hole is opened on the top of the heating box, and the X-ray fluorescence spectrometer probe is arranged on the top of the heating box. The X-ray fluorescence spectrometer probe is arranged corresponding to the dried solid in the sample container through the through hole.

[0011] Preferably, a switch structure for blocking or opening the through hole is provided at the through hole.

[0012] Preferably, the X-ray fluorescence spectrometer probe is arranged on the heating box through a lifting structure, and the lowest point of the lifting movement path of the X-ray fluorescence spectrometer probe is located in the inner cavity of the heating box.

[0013] Preferably, the solid-liquid separation mechanism is a vacuum filter, which includes a vacuum pump, a filtration bottle, and a funnel provided with a filter membrane, and the funnel and the vacuum pump are both connected to the filtration bottle.

[0014] Preferably, the suction filtration bottle is arranged in a heating box.

[0015] The present invention also provides a detection method using the above-mentioned polymer composite material plate rapid detection device, comprising the following steps:

[0016] S1: Obtain a polymer composite material plate sample, weigh the sample, and obtain the sample density;

[0017] S2: The sample is placed in a solvent, and the organic matter in the sample is dissolved to form a solid-liquid mixture;

[0018] S3: Separate the solid-liquid mixture and retain the solid;

[0019] S4: drying the separated solid, and weighing the solid after drying to obtain the solid content of the polymer composite material plate;

[0020] S5: using an X-ray fluorescence spectrometer to detect the components of the dried solid;

[0021] S6: Determine the type and composition of the polymer composite material board based on the sample density, solid content and solid components.

[0022] Compared with the prior art, the present invention mainly achieves the following technical effects:

[0023] The weighing system can obtain the density of the sample. The weighing system, dissolution system, solid-liquid separation system and high-temperature drying system can cooperate with each other to achieve effective separation of organic components in the composite material board and obtain the solid content in the board. The monitoring and analysis system can obtain the components of the solid after drying. When the sample density, sample solid content and the components of the solid after drying are obtained, the composition of the composite board can be judged with good detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of a rapid detection device for polymer composite material plates according to the present invention;

[0026] Among them, 1. Heating box; 2. Sample container; 3. X-ray fluorescence spectrometer probe; 4. Weight transfer mechanism; 5. Support; 6. Switch structure; 7. Lifting structure; 8. Vacuum pump; 9. Vacuum pipeline. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0028] The purpose of the present invention is to provide a rapid detection device and method for polymer composite material plates to solve the problems existing in the prior art. After the sample is weighed, dissolved, solid-liquid separated and dried in sequence, the solid component is detected using an X-ray fluorescence spectrometer probe to determine the composition of the composite plate.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Please refer to Figure 1As shown, a rapid detection device for polymer composite material plates is provided, which includes a weighing system, a dissolution system, a solid-liquid separation system, a high-temperature drying system and a monitoring and analysis system for processing samples in sequence.

[0031] The weighing system is used to weigh the sample obtained at the initial stage of the test to obtain the density of the sample. It can also be used to weigh the dried solids after being processed by the high-temperature drying system to obtain the solid content of the sample.

[0032] The dissolution system includes a placement container filled with a solvent that can dissolve organic matter. The organic matter in the sample can be dissolved in the placement container to obtain a solid-liquid mixture.

[0033] The solid-liquid separation system includes a solid-liquid separation mechanism for separating the solid-liquid mixture processed by the dissolution system to obtain dissolved and separated solids.

[0034] The high-temperature drying system includes a heating box 1, which is provided with a sample container 2 for placing the separated solid. After the solid is dried, the solid content can be detected to improve the detection accuracy; the heating box 1 has an opening and closing door structure, and must be highly sealed when the door is closed so that a certain vacuum degree can be achieved in the heating box 1. The heating component in the heating box 1 can be a ceramic heater or other types of heaters, and the temperature of the heater is controlled by a temperature control module; the material of the sample container 2 can be stainless steel or nitrided alloy steel, etc.

[0035] The monitoring and analysis system includes an X-ray fluorescence spectrometer probe 3, which is set corresponding to the dried solid in the sample container 2 and can obtain the components of the dried solid. The X-ray fluorescence spectrometer probe 3 can measure elemental components from magnesium (Mg) to uranium (U), and the measurement content range is from one part per million to one hundred percent. The detection time can quickly obtain the elemental composition of the object being tested within 1-5 seconds.

[0036] The working principle of this device is as follows: the density of the sample can be obtained by using the weighing system, and the organic components in the composite material board can be effectively separated by using the mutual cooperation of the weighing system, dissolution system, solid-liquid separation system and high-temperature drying system, and the solid content in the board can be obtained by weighing. The X-ray fluorescence spectrometer probe 3 of the monitoring and analysis system can obtain the components of the solid after drying. When the sample density, sample solid content and the components of the solid after drying are obtained, the composition of the composite board can be judged with good detection accuracy.

[0037] In order to reduce the device cost, the sample container 2 and the placement container can share a container.

[0038] In some embodiments, the weighing system includes a weight conduction mechanism 4 and a mass sensor. The weight conduction mechanism 4 is a columnar structure made of stainless steel or nitrided alloy steel. The top end of the weight conduction mechanism 4 extends into the heating box 1, and the bottom end abuts against the mass sensor outside the heating box 1. The sample container 2 is placed on the top end of the weight conduction mechanism 4. This design integrates the weighing system with the high-temperature drying system, and the two do not need to be set up independently, saving space occupied by the overall device.

[0039] A support 5 is provided at the bottom of the heating box 1 , and the mass sensor is provided between the support 5 and the heating box 1 . The support 5 can provide stable support for the mass sensor, the weight conducting mechanism 4 and the heating box 1 .

[0040] In some embodiments, a through hole is opened on the top of the heating box 1, and the X-ray fluorescence spectrometer probe 3 is set on the top of the heating box 1. The X-ray fluorescence spectrometer probe 3 is set corresponding to the dried solid in the sample container 2 through the through hole. This design integrates the X-ray fluorescence spectrometer probe 3 with the heating box 1, further reducing the space occupied by the overall device.

[0041] In order to prevent the heat in the heating box 1 from dissipating from the through hole during the heating and drying process, resulting in poor heating and drying effects, a switch structure 6 for sealing or opening the through hole is provided at the through hole. The switch structure 6 can be a sliding plate slidably arranged on the top of the heating box 1. The through hole is located on the movement path of the sliding plate. The sliding plate is controlled by manual or electrically controlled telescopic rods to realize the opening or closing of the through hole. Of course, a sealing plug can also be used as the switch structure 6. When it needs to be opened, the sealing plug can be pulled out.

[0042] The X-ray fluorescence spectrometer probe 3 is set on the heating box 1 through the lifting structure 7. The lifting structure 7 can be an electric, pneumatic or hydraulic telescopic rod, a shear-type lifting platform, or other structures that can provide lifting movement. The lowest point of the lifting movement path of the X-ray fluorescence spectrometer probe 3 is located in the inner cavity of the heating box 1. At this time, the size design of the through hole needs to ensure that the X-ray fluorescence spectrometer probe 3 can enter the heating box 1. By extending the X-ray fluorescence spectrometer probe 3 into the heating box 1, the distance between the X-ray fluorescence spectrometer probe 3 and the dried solid can be shortened to improve the detection accuracy.

[0043] In some embodiments, the solid-liquid separation mechanism is a vacuum filter, which includes a vacuum pump 8, a filter bottle, and a funnel provided with a filter membrane. The vacuum pump 8 can be a rotary vane vacuum pump 8. The funnel and the vacuum pump 8 are both connected to the filter bottle. The suction action of the vacuum pump 8 and the setting of the filter membrane are used to achieve solid-liquid separation. The solid will remain on the filter membrane and then be collected in the sample container 2; solid-liquid separation can also be achieved using a solid-liquid separator.

[0044] The suction filtration bottle can be set in the heating box 1 to realize the integration of the solid-liquid separation mechanism and the heating box 1, further reducing the space occupied by the device. The suction filtration bottle can be connected to the vacuum pump 8 through the vacuum pipe 9 penetrating the heating box 1.

[0045] The present invention also provides a detection method using the above-mentioned polymer composite material plate rapid detection device, comprising the following steps:

[0046] S1: Obtain a polymer composite material plate sample, weigh the sample, and obtain the sample density. When obtaining the sample, a sample of a certain size can be cut according to the cavity size of the sample container 2 to facilitate placement in the sample container 2 for weighing. The sample density can also be accurately calculated based on the sample size and the weighing result;

[0047] S2: placing the sample in a solvent, dissolving the organic matter in the sample to form a solid-liquid mixture, wherein the container for placing the solvent can be the sample container 2 or an additional container, and the solvent is one or more of chloroform, carbon tetrachloride, dichloromethane, dichloroethane, xylene, etc.;

[0048] S3: Separate the solid-liquid mixture using a vacuum filter to retain the solid. Specifically, after turning on the vacuum pump 8, pour the solid-liquid mixture into the funnel to automatically complete the solid-liquid separation.

[0049] S4: placing the separated solid into the sample container 2 for drying, and weighing the solid using a weighing system after drying to obtain the solid content of the polymer composite material plate;

[0050] S5: Open the through hole and use the lifting structure 7 to extend the X-ray fluorescence spectrometer probe 3 into the heating box 1, and use the X-ray fluorescence spectrometer probe 3 to detect the components of the dried solid (inorganic solid filler in the sample);

[0051] S6: Conduct a comprehensive analysis based on the sample density, solid content and solid components to determine the type and components of the polymer composite material board.

[0052] Specific judgment example 1:

[0053] Cut a sample of 20×20×10 mm in size from the middle of the polymer composite material plate and number it as “Sample 1”;

[0054] The cut sample is placed in the sample container 2, and the sample mass is obtained by weighing the stainless steel weight transmission mechanism 4 and the mass sensor with an accuracy of 0.01g. The sample density is calculated to be 1.31g / cm 3 ;

[0055] The weighed sample was placed in excess chloroform for dissolution. It was found that the organic matter in the sample was completely dissolved. It was determined that the polymer matrix in the board was polyvinyl chloride (PVC). After dissolution, the remaining solid was filtered through a vacuum filter to ensure thorough filtration.

[0056] The remaining solid after filtration was placed in a sample container 2 in a heating box 1, heated to 500°C for drying, and weighed using the same mass sensor after drying. The residual solid content was calculated to be 22.4%;

[0057] The through hole was opened, and the X-ray fluorescence spectrometer probe 3 was inserted into the heating box 1 via the lifting structure 7. The elemental composition of the remaining solid after drying was tested. The composition of the residual solid filling in Sample 1 was measured to be: 70.95% CaO, 17.41% SiO2, and other trace elements;

[0058] Comprehensive analysis: According to the density of the sample (1.31g / cm 3 ), residual solid content (22.4%) and residual solid filler components, it was determined that the sample was a PVC-based wood-plastic composite material board.

[0059] Specific judgment example 2:

[0060] The same method as in Example 1 was used to test Sample 2. The results showed that the organic matter in Sample 2 was also dissolved by the solvent, indicating that the resin matrix in this sample was made of PVC. The density of Sample 2 was measured to be 0.89 g / cm 3 The residual solid content is 15.3%, and the residual solid filler composition is: 90.95% CaO and other trace elements. It is confirmed that sample 2 is also a PVC foamed wood-plastic composite material board filled with CaCO3.

[0061] Specific judgment example three:

[0062] The same method as in Example 1 was used to test Sample 3. The results showed that the organic matter in Sample 3 was also dissolved by the solvent, indicating that the resin matrix in Sample 3 was made of PVC. The density of Sample 3 was measured to be 1.41 g / cm 3 The residual solid content is 40.1%, and the inorganic solid filler composition is: 61.871% CaO, 19.583% SiO2 and other trace elements. Comprehensively judging that sample three is a PVC-based stone-plastic composite material board.

[0063] Specific judgment example 4:

[0064] The same method as in Example 1 was used to test Sample 4. It was found that only part of the organic matter in Sample 4 was dissolved by the solvent, indicating that the resin matrix in this sample was polyethylene (PE) or polypropylene (PP). The measured sample density was 1.4 g / cm3 The residual solid content is 48.6%, and the residual solid filler is mainly composed of 89.21wt% CaO. According to the density, solid content and inorganic solid filler components, it is judged that the sample is a PE or PP-based stone-plastic composite material plate.

[0065] Adaptive changes based on actual needs are all within the scope of protection of the present invention.

[0066] It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0067] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A rapid detection device for polymer composite material plates, characterized in that: It includes a weighing system, a dissolution system, a solid-liquid separation system, a high-temperature drying system, and a monitoring and analysis system that process samples in sequence; The dissolution system includes a container containing a solvent capable of dissolving organic matter; The solid-liquid separation system includes a solid-liquid separation mechanism for separating the solid-liquid mixture after being processed by the dissolution system; The high-temperature drying system includes a heating box, wherein a sample container for placing the separated solid is provided in the heating box; The monitoring and analysis system includes an X-ray fluorescence spectrometer probe, which is arranged corresponding to the dried solid in the sample container.

2. The rapid detection device for polymer composite material plates according to claim 1, characterized in that: The sample container and the placement container share a container.

3. The rapid detection device for polymer composite material plates according to claim 1, characterized in that: The weighing system includes a weight transmission mechanism and a mass sensor. The top end of the weight transmission mechanism extends into the heating box, and the bottom end abuts against the mass sensor outside the heating box. The sample container is placed on the top end of the weight transmission mechanism.

4. The rapid detection device for polymer composite material plates according to claim 3, characterized in that: A support is provided at the bottom of the heating box, and the mass sensor is provided between the support and the heating box.

5. The rapid detection device for polymer composite material plates according to claim 1, characterized in that: A through hole is provided on the top of the heating box, and the X-ray fluorescence spectrometer probe is arranged on the top of the heating box. The X-ray fluorescence spectrometer probe is arranged through the through hole corresponding to the dried solid in the sample container.

6. The rapid detection device for polymer composite material plates according to claim 5, characterized in that: The through hole is provided with a switch structure for blocking or opening the through hole.

7. The rapid detection device for polymer composite material plates according to claim 5, characterized in that: The X-ray fluorescence spectrometer probe is arranged on the heating box through a lifting structure, and the lowest point of the lifting movement path of the X-ray fluorescence spectrometer probe is located in the inner cavity of the heating box.

8. The rapid detection device for polymer composite material plates according to claim 1, characterized in that: The solid-liquid separation mechanism is a vacuum filter, which includes a vacuum pump, a filtration bottle, and a funnel provided with a filter membrane. The funnel and the vacuum pump are both connected to the filtration bottle.

9. The rapid detection device for polymer composite material plates according to claim 8, characterized in that: The suction filtration bottle is arranged in the heating box.

10. A detection method, characterized in that: The use of the polymer composite material plate rapid detection device according to any one of claims 1 to 9 comprises the following steps: S1: Obtain a polymer composite material plate sample, weigh the sample, and obtain the sample density; S2: The sample is placed in a solvent, and the organic matter in the sample is dissolved to form a solid-liquid mixture; S3: Separate the solid-liquid mixture and retain the solid; S4: drying the separated solid, and weighing the solid after drying to obtain the solid content of the polymer composite material plate; S5: using an X-ray fluorescence spectrometer to detect the components of the dried solid; S6: Determine the type and composition of the polymer composite material board based on the sample density, solid content and solid components.

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