CN214427317U

CN214427317U - Film pipe fitting for diffraction test

Info

Publication number: CN214427317U
Application number: CN202022958788.0U
Authority: CN
Inventors: 徐君; 严子耳
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-10-19
Anticipated expiration: 2030-12-09

Abstract

The utility model provides a film pipe fitting for diffraction test, which comprises a film pipe main body, wherein the film pipe main body comprises a sample loading part and a filling part, and the sample loading part is used for containing a sample; the length of the sample loading part is 1-5% of the length of the thin film tube main body; and the filling part is connected with the sample loading part, and the filling part is filled with a low background material which has no influence on the result of the diffraction test. Compared with the prior art, the utility model provides a film pipe fitting divide into dress appearance portion and filling portion with film pipe main part, wherein dress appearance portion only accounts for 1 ~ 5% of film pipe main part, and all the other length then is filling portion, and the length that will dress appearance portion reduces greatly, is applicable to the dress appearance detection of trace sample more.

Description

Film pipe fitting for diffraction test

Technical Field

The utility model relates to a single crystal diffraction test field, concretely relates to film pipe fitting for diffraction test.

Background

Diffraction methods are advantageous means of resolving the crystal structure and microstructure of molecules. Crystal diffraction analysis can be broadly divided into: single crystal and powder diffraction methods. The experimental techniques of single crystal and powder diffraction are all provided with respective diffraction instruments, which are respectively as follows: single crystal diffractometers and powder diffractometers. At present, with the improvement of the performance of instruments and computing software, the functions of the powder diffraction instrument can be well realized on the single crystal diffraction instrument, and the single crystal diffraction instrument has better performance, for example, the single crystal diffraction instrument can realize the analysis of a few micrograms of samples, and the common powder diffraction instrument is difficult to realize (usually, milligram-level samples are needed). However, diffraction experiments of minute amounts of powder and minute amounts of liquid were performed on a single crystal diffraction instrument, which was limited in the preparation of samples.

The current sample loading method for trace powder and trace liquid comprises the following steps: 1) a glass fiber (or capillary) sample holder; 2) kapton tape sample holder; 3) a nylon wire loop sample holder; 4) sealing the capillary tube and loading the sample; 5) the kapton tube is sealed. However, the five sample loading methods have certain defects.

The drawbacks to the first three methods: 1) because the sample is not wrapped by oil, the sample can be unstable and fall off in the testing process; if the oil is used for wrapping, unnecessary diffraction background can be generated, and the experimental result is further influenced; 2) the sample amount of each test cannot be guaranteed, and the experiment lacks reproducibility.

For the drawbacks of method 4): 1) the self-made capillary is not easy to prepare; 2) if the wall thickness of the capillary tube affects the diffraction data quality; 3) if the capillary walls are too thin (commercially available capillaries with a wall thickness of 10 microns), the samples are particularly prone to breakage and difficult to handle when prepared.

For the drawbacks of method 5): the kapton tube seal sample is currently used to fill the entire tube (approximately 25mm in length), but during diffraction experiments, the sample is often only required to be filled to a length of 0.5 mm. The rest of the samples are redundant, cannot be detected by the instrument, and the samples are filled into the tubes with the thickness of 25mm, which wastes time and labor.

In view of the above, it is necessary to provide a technical solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the film pipe fitting for the diffraction test is provided, and the problem of sample loading defects of trace liquid and trace powder samples in the field of single crystal diffraction at present is solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a thin film tube for diffraction testing, comprising a thin film tube body comprising:

the sample containing part is used for containing a sample; the length of the sample loading part is 1-5% of the length of the thin film tube main body;

and the filling part is connected with the sample loading part, and the filling part is filled with a low background material which has no influence on the result of the diffraction test.

Preferably, the thickness of the tube wall of the thin film tube main body is 5-25 μm.

Preferably, the length of the sample containing part for containing the sample is 30-100% of the length of the sample containing part.

Preferably, the length of the thin film tube main body is 5-30 mm.

Preferably, the length of the filling part is 95 to 99% of the length of the thin film tube main body.

Preferably, the filling part is filled with a low background material, which has no influence on the results of the diffraction test.

Preferably, the film tube further comprises a base connected to the filling part.

Preferably, the sample contained in the sample loading part is a liquid sample or a powder sample with the mass of less than 1 mg.

The beneficial effects of the utility model reside in that:

1) the utility model provides a film pipe fitting for diffraction test, which comprises a film pipe main body, wherein the film pipe main body comprises a sample loading part and a filling part, and the sample loading part is used for containing a sample; the length of the sample loading part is 1-5% of the length of the thin film tube main body; and the filling part is connected with the sample loading part, and the filling part is filled with a low background material which has no influence on the result of the diffraction test. Compared with the prior art, the utility model provides a film pipe fitting divide into dress appearance portion and filling part with film pipe main part, wherein dress appearance portion only accounts for 1 ~ 5% of film pipe main part, and all the other length then are filling part, and the length that will dress appearance portion reduces greatly, not only more does benefit to dress appearance, and the low diffraction background of the material that this filling part was filled, can not exert an influence to the diffraction result of sample, is applicable to the dress appearance detection of trace sample more.

2) The utility model discloses a film pipe fitting system appearance easy operation, the sample quantity still less.

3) The utility model discloses a film pipe fitting preparation is more nimble, and the experimenter can produce the diffraction film pipe fitting that accords with oneself experimental demand at any time.

4) The utility model provides a film pipe fitting not only can be used to the test of single crystal diffraction, still can be used to the diffraction experiment under the various atmosphere, and the range of application is more extensive, and the practicality is stronger.

Drawings

Fig. 1 is one of the structural schematic diagrams of the film pipe of the present invention.

Fig. 2 is a second schematic structural view of the film tube of the present invention.

In the figure: 1-a thin film tube body; 11-a sample loading part; 12-a filling section; 2-base.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the present invention and its advantageous effects will be described in further detail below with reference to the accompanying drawings of the detailed description and the specification, but the present invention is not limited thereto.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

As shown in fig. 1-2, a thin film tube for diffraction test comprises a thin film tube body 1, wherein the thin film tube body 1 comprises a sample loading part 11 and a filling part 12; the sample containing part 11 is used for containing a sample; the length of the sample loading part 11 is 1-5% of the length of the thin film tube main body 1; the filling part 12 is connected to the sample loading part 11, and the filling part 12 is filled with a low background material which has no influence on the result of the diffraction test. The filling part 12 and the sample loading part 11 may be integrally formed or assembled, and preferably, they are integrally formed and connected. The raw material of the thin film tube body 1 may be polyimide, and a commercially available kapton tube may be directly purchased. The commercially available kapton tube was divided into a loading portion 11 and a filling portion 12, and when loading was performed in a diffraction experiment, the filling portion 12 was first filled with a low-diffraction background material under a microscope, and then the test sample was loaded.

Furthermore, the thickness of the tube wall of the thin film tube body 1 is 5-25 μm. Compared with a capillary tube with the thickness of 10 mu m on the market, the thickness of the tube wall is harder, the tube wall is not easy to break when a sample is loaded, the sample loading is more convenient, and in addition, the influence on a diffraction test result is small even if the film tube with the thick tube wall is made of the polyimide material. Preferably, the thickness of the tube wall of the thin film tube body 1 is 10 μm.

Further, the length of the sample containing part 11 for containing the sample is 30-100% of the length of the sample containing part 11. The sample may fill mainly the top of the well 11 without filling the entire well 11, but may of course fill the entire well 11 completely.

Further, the length of the thin film tube body 1 is 5-30 mm. Specifically, when a 25mm long kapton tube is purchased as a raw material of the thin film tube body 1, the length of the loading portion 11 may be 1mm, and the length of the reserved loading may be 0.3 to 1 mm. In actual sample loading, the sample can be filled to 0.3-0.5 mm in length, and the test requirements of the diffraction experiment can be met.

Further, the length of the filling part 12 is 95 to 99% of the length of the thin film tube main body 1. Most of the thin film tube main body 1 is used as the filling part 12, so that the overall strength of the thin film tube main body 1 can be improved to a greater extent, and the thin film tube is ensured not to be easily broken when a sample is loaded.

Further, the filling portion 12 is filled with a low-diffraction background material. The filling part 12 is filled with a low-diffraction background material, and the filling part 12 is made to be solid, so that on one hand, the overall strength of the film pipe fitting can be enhanced, and the subsequent sample loading of a sample is facilitated; on the other hand, the solid filling part 12 is also beneficial to reserving the sample on the top of the sample containing part 11 when the liquid sample is contained.

Further, the film tube further includes a base 2 connected to the filling portion 12. The base 2 can provide a supporting force for the thin film tube body 1 to facilitate subsequent sample loading. Preferably, a nozzle is arranged in the base 2, so that the thin film tube body 1 can be stably inserted into the base 2 to complete the preparation of the thin film tube.

Further, the sample contained in the sample containing part 11 is a liquid sample or a powder sample with a mass of less than 1 mg. The film pipe fitting is mainly used for sample loading of trace liquid or trace powder, and various defects of the existing sample loading device for trace liquid or powder are overcome.

The utility model discloses specific preparation method of film pipe fitting, including following step:

s1, preparing a thin film tube main body 1 with the length of 5-30 mm, wherein 95-99% of the length is used as a filling part 12, and 1-5% of the length is used as a sample loading part 11;

s2, filling the filling part 12 with a material with a low diffraction background, and reserving the sample loading part 11 for subsequent sample loading; the low background material has no influence on the results of diffraction tests;

and S3, inserting one end of the filling part 12 far away from the sample loading part 11 into the base 2, and fixing to finish the preparation of the film pipe fitting.

The specific sample loading method of the film pipe fitting for the trace liquid sample comprises the following steps: after the preparation of the film pipe fitting is completed, a sample to be tested is contained in the sample containing part 11, the top of the sample containing part 11 is filled with the sample to be tested, and a sample containing port can be sealed by glue if necessary, so that the sample containing of a trace liquid sample is completed. Because the liquid has fluidity, the liquid can be stood for a moment in the sample loading process, and whether the sample is filled in the top of the sample loading part 11 is judged after the sample is stable, if the sample is not filled, the sample loading can be increased, and the sample loading is finished.

The specific sample loading method of the film pipe fitting for the trace powder sample comprises the following steps: after the preparation of the film pipe fitting is finished, a sample to be detected is contained in the sample containing part 11, and the top of the sample containing part 11 is filled with the sample to be detected; and then, flattening and compacting the sample by using a sample pressing rod with the diameter slightly smaller than that of the thin film tube main body 1 to finish the sample loading of the trace powder sample.

Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A thin film tube for diffraction testing, comprising a thin film tube body (1), the thin film tube body (1) comprising:

a sample containing part (11) for containing a sample; the length of the sample loading part (11) is 1-5% of the length of the thin film tube main body (1);

a filling part (12) connected with the sample loading part (11), wherein the filling part (12) is filled with a low background material which has no influence on the result of the diffraction test.

2. The thin film tube member as claimed in claim 1, wherein the thin film tube body (1) has a tube wall thickness of 5 to 25 μm.

3. The film tube according to claim 1, wherein the length of the sample holding part (11) for holding a sample is 30-100% of the length of the sample holding part (11).

4. The thin film tube member as claimed in claim 3, wherein the thin film tube body (1) has a length of 5 to 30 mm.

5. The thin film tube member as claimed in claim 1, wherein the length of the filling part (12) is 95-99% of the length of the thin film tube body (1).

6. The thin-film tube according to claim 5, characterized in that the filling portion (12) is filled with a low background material which has no effect on the results of the diffraction test.

7. The membrane tube according to claim 1, characterized in that it further comprises a base (2) connected to the filling portion (12).

8. A membrane tube according to any one of claims 1-7, characterized in that the sample holding part (11) holds a liquid sample or a powder sample with a mass of less than 1 mg.