阅读说明：本技术 一种金相覆膜试纸及其制备方法 (Metallographic coated test paper and preparation method thereof ) 是由 杨超英 王鹏 秦承鹏 王志强 陈征 蔡晖 李梁 李东江 王强 陆佳晶 于 2021-09-29 设计创作，主要内容包括：本发明公开了一种金相覆膜试纸及其制备方法,由乙基纤维素、磷酸三苯酯、染料及溶剂制备而成。乙基纤维素、磷酸三苯酯、染料及溶剂的比例为(20-80)g、(0.1-20)g、(0.001-0.1)g及(200-500)mL,该试纸具有柔韧性好、成本低、清晰度高、衬度及视场明亮度优异的特点。(The invention discloses metallographic coated test paper and a preparation method thereof. The proportion of ethyl cellulose, triphenyl phosphate, dye and solvent is (20-80) g, (0.1-20) g, (0.001-0.1) g and (200-500) mL, and the test paper has the characteristics of good flexibility, low cost, high definition, and excellent contrast and visual field brightness.)

1. The metallographic coated test paper is characterized by being prepared from ethyl cellulose, triphenyl phosphate, a dye and a solvent.

2. The metallographic coated test paper according to claim 1, wherein the ratio of ethyl cellulose, triphenyl phosphate, dye and solvent is (20-80) g, (0.1-20) g, (0.001-0.1) g and (200-500) mL.

3. The metallographic coated test paper according to claim 1, wherein the solvent is absolute ethanol.

4. The metallographic coated test paper according to claim 1, wherein the dye is methyl violet.

5. The preparation method of the metallographic coated test paper is characterized by comprising the following steps of:

and adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, and flatly spreading and drying to form a film, thereby obtaining the metallographic coated test paper.

6. The method for preparing metallographic coated test paper according to claim 5, wherein the ratio of ethyl cellulose, triphenyl phosphate, dye and solvent is (20-80) g, (0.1-20) g, (0.001-0.1) g and (200-500) mL.

7. The method for preparing metallographic coated test paper according to claim 5, wherein the solvent is absolute ethyl alcohol.

8. The preparation method of the metallographic coated test paper according to claim 5, which comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing, taking supernatant, then flatly paving on a bottom plate with a smooth surface, and then drying to form a film, thus obtaining the metallographic coated test paper.

9. The method for preparing metallographic coated test paper according to claim 5, wherein the surface of the base plate is cleaned with absolute ethanol before being laid flat.

10. The method for preparing metallographic coated test paper according to claim 5, wherein the dye is methyl violet.

Technical Field

The invention belongs to the field of metallographic detection, and relates to metallographic coated test paper and a preparation method thereof.

Background

The metallographic structure reflects the specific form of the metal metallographic phase, and the internal structure of the metal or the alloy can be observed by a metallographic method. The commonly used metallographic detection method is metallographic microscope observation or sampling with metallographic coated test paper. The metallographic microscope can be used for conveniently observing metallographic images and analyzing metallographic maps, and the metallographic microscope is used for observing, inspecting and analyzing the internal structure of the metal, is a common metallographic detection method and is widely used for microscopic analysis of metals and alloys. However, the application of the metallographic microscope is limited, the requirements on the field are high, some parts are not suitable for being divided and brought back for analysis, and the metallographic microscope is inconvenient to detect on the field. The metallographic coated test paper can solve the problem.

The metallographic coated test paper is a plastic film manufactured by means of a replica principle of a transmission electron microscope, the traditional coating is that cellulose acetate, triphenyl phosphate (TPP) and dye are dissolved in acetone, the melted solution is spread on a flat, clean and dry surface, and after acetone is volatilized, the manufactured film can also meet field detection, but has the characteristics of difficult solvent purchase and approval, difficult carrying, higher cost and the like. Compared with the traditional acetone film coating technology, the novel film coating technology solves the problems of carrying and cost, but the dissolution and toughness of the dye are still poor, and the prepared solution can be used after being further treated after being placed for a long time.

Therefore, there is a need for improved test strip formulations that increase flexibility, improve clarity, increase contrast and field brightness, and reduce cost.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the metallographic coated test paper and the preparation method thereof.

In order to achieve the purpose, the metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and a solvent.

The proportions of ethyl cellulose, triphenyl phosphate, dye and solvent are (20-80) g, (0.1-20) g, (0.001-0.1) g and (200-500) mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

A preparation method of metallographic coated test paper comprises the following steps:

and adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, and flatly spreading and drying to form a film, thereby obtaining the metallographic coated test paper.

The proportions of ethyl cellulose, triphenyl phosphate, dye and solvent are (20-80) g, (0.1-20) g, (0.001-0.1) g and (200-500) mL.

The solvent is absolute ethyl alcohol.

The method specifically comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing, taking supernatant, then flatly paving on a bottom plate with a smooth surface, and then drying to form a film, thus obtaining the metallographic coated test paper.

The surface of the base plate was cleaned by absolute ethanol before tiling.

The dye is methyl violet.

The invention has the following beneficial effects:

the metallographic coated test paper and the preparation method thereof are prepared from ethyl cellulose, triphenyl phosphate, dye and solvent during specific operation, and the definition and the detection effect are improved by changing the formula of the metallographic coated test paper for detection; after sampling, the sample can be directly observed and observed by an optical microscope, so that the detection method is more convenient and faster, the solvent is easily obtained, the cost is greatly reduced, the flexibility and the contrast of the finished product are good, and the finished product can be obtained by the solution after long-time storage without further treatment.

Drawings

FIG. 1a is a schematic diagram of a gold phase according to the first embodiment;

FIG. 1b is an on-site metallographic picture of an acetone formulation;

FIG. 2a is the metallographic image obtained in example two;

FIG. 2b is an on-site metallographic picture of an acetone formulation;

FIG. 3a is the metallographic image obtained in the third example;

figure 3b is an in situ gold phase diagram of an acetone formulation.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.

Example one

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportion of ethyl cellulose, triphenyl phosphate, dye and solvent is 20 g: 5 g: 0.005g and 300 ml.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing to obtain a supernatant, then flatly paving the supernatant on a bottom plate with a smooth surface, drying to form a film to obtain metallographic coated test paper, and sampling a 12Cr1MoV material on site, wherein the sampling result is shown in figure 1 a.

Before tiling, the surface of the bottom plate is cleaned by absolute ethyl alcohol, and the bottom plate is made of 12Cr1 MoV.

Example two

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportions of ethylcellulose, triphenyl phosphate, dye and solvent were 25g, 15g, 0.005g and 500 mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing to obtain a supernatant, then spreading the supernatant on a bottom plate with a smooth surface, drying to form a film to obtain metallographic coated test paper, and sampling the TP347H material on site, wherein the sampling result is shown in figure 2 a.

Wherein the surface of the base plate is cleaned by absolute ethyl alcohol before tiling.

EXAMPLE III

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportions of ethylcellulose, triphenyl phosphate, dye and solvent were 30g, 20g, 0.1g and 500 mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing to obtain a supernatant, then spreading the supernatant on a bottom plate with a smooth surface, drying to form a film to obtain metallographic coated test paper, and carrying out on-site sampling on a welding seam of T22 and TP347H dissimilar steel, wherein the sampling result is shown in figure 3 a.

Wherein the surface of the base plate is cleaned by absolute ethyl alcohol before tiling.

Example four

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportions of ethyl cellulose, triphenyl phosphate, dye and solvent were 20g, 0.001g and 500 mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing, taking supernatant, then flatly paving on a bottom plate with a smooth surface, and then drying to form a film, thus obtaining the metallographic coated test paper.

Wherein the surface of the base plate is cleaned by absolute ethyl alcohol before tiling.

EXAMPLE five

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportions of ethyl cellulose, triphenyl phosphate, dye and solvent were 80g, 0.1g and 200 mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing, taking supernatant, then flatly paving on a bottom plate with a smooth surface, and then drying to form a film, thus obtaining the metallographic coated test paper.

Wherein the surface of the base plate is cleaned by absolute ethyl alcohol before tiling.

EXAMPLE six

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportions of ethylcellulose, triphenyl phosphate, dye and solvent were 50g, 10g, 0.06g and 350 mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing, taking supernatant, then flatly paving on a bottom plate with a smooth surface, and then drying to form a film, thus obtaining the metallographic coated test paper.

Wherein the surface of the base plate is cleaned by absolute ethyl alcohol before tiling.

EXAMPLE seven

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportions of ethylcellulose, triphenyl phosphate, dye and solvent were 30g, 5g, 0.005g and 250 mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing, taking supernatant, then flatly paving on a bottom plate with a smooth surface, and then drying to form a film, thus obtaining the metallographic coated test paper.

Wherein the surface of the base plate is cleaned by absolute ethyl alcohol before tiling.

Example eight

The metallographic coated test paper is prepared from ethyl cellulose, triphenyl phosphate, dye and solvent.

The proportions of ethylcellulose, triphenyl phosphate, dye and solvent were 70g, 18g, 0.08g and 450 mL.

The solvent is absolute ethyl alcohol.

The dye is methyl violet.

The preparation method of the metallographic coated test paper comprises the following steps:

adding ethyl cellulose, triphenyl phosphate and dye into a solvent, uniformly stirring and dissolving, filtering or standing, taking supernatant, then flatly paving on a bottom plate with a smooth surface, and then drying to form a film, thus obtaining the metallographic coated test paper.

Wherein the surface of the base plate is cleaned by absolute ethyl alcohol before tiling.