CN110646437A - Dye check developer with good suspension property and preparation method thereof - Google Patents
Dye check developer with good suspension property and preparation method thereof Download PDFInfo
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- CN110646437A CN110646437A CN201910900407.2A CN201910900407A CN110646437A CN 110646437 A CN110646437 A CN 110646437A CN 201910900407 A CN201910900407 A CN 201910900407A CN 110646437 A CN110646437 A CN 110646437A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
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Abstract
The invention discloses a dye check developer with good suspension property, which comprises the following components in parts by weight: 65-90 parts of a mixed solvent; 9-19 parts of an adsorbent; 1-8 parts of a limiting agent; 0.1-3.5 parts of wetting dispersant; 0.1-3.5 parts of a rheological additive. The dye check developer prepared by the invention has the advantages of fine and uniform film formation, good developing effect and no thickening of the adsorbent.
Description
Technical Field
The invention relates to the technical field of nondestructive testing, in particular to a dye check developer with good suspension property and a preparation method thereof.
Background
The penetration test is a nondestructive test method for inspecting surface opening defects based on the principle of capillary action, and is one of five conventional nondestructive test methods (ray test, ultrasonic test, magnetic powder test, penetration test, eddy current test).
As described in section 1.4.1 of AMS2644G american space materials specification AMS2644G detection material-penetrant, penetrant detection can be classified into two major categories, fluorescence penetrant detection and dye penetrant detection. The penetrant contains fluorescent dye and can excite fluorescence under the irradiation of a black light lamp as a fluorescence penetration detection method; the method for developing the defect image under white light or fluorescent light is dye penetration detection. The coloring penetration detection is widely applied in the special equipment industry and the mechanical industry, and the basic principle is the capillary action principle: after the workpiece surface has been coated with a penetrant containing a coloring dye, the penetrant can penetrate into the surface opening defects by capillary action over a period of time: removing the redundant penetrant on the surface of the penetrant, drying, and then coating an adsorption medium-developer on the surface of the workpiece; under the capillary action, the developer will attract the penetrant in the defect, i.e. the penetrant will permeate back into the developer, and under white light, the penetrant trace at the defect is displayed, generally showing a bright red color, so as to detect the appearance and distribution state of the defect.
The developing agent can be divided into six developing modes of a, b, c, d, e and f according to section 1.4.2 of AMS2644G American space material code AMS2644G detection material-penetrating agent, and the invention belongs to the developing mode d/e and is a solvent suspension type developing agent.
In the prior art, white powder such as magnesium oxide, sodium carbonate, zinc oxide, titanium oxide, talcum powder and the like is usually selected as an adsorbent, and a grinder is selected to grind and control the particle size of the adsorbent in the preparation process so as to achieve good suspension property of the solvent type developer, but the following problems exist: firstly, in order to control the particle size of the adsorbent powder to improve the suspension property of the adsorbent in the developer, a large amount of time is usually consumed for grinding by a grinder, the production progress is influenced, and the storage stability of the developer is poor, which is specifically represented as follows: in the prior art, wetting dispersants are mostly added into solvent-type developers, the functional auxiliary agent can play a part of anti-settling effect in a formula, but the adsorbent is finally accumulated at the bottom of a container along with the lapse of time and is often difficult to disperse quickly again; if the dye check developer is an aerosol product, the adsorbent accumulated at the bottom of the aerosol cannot be shaken up quickly, and a valve can be blocked when the dye check developer is used.
Disclosure of Invention
In view of the above disadvantages, the present invention aims to provide a dye check developer with good suspension property and good storage stability, and a preparation method thereof.
The technical scheme of the invention is summarized as follows:
a dye check developer with good suspensibility, wherein the dye check developer comprises the following components in parts by weight:
preferably, the dye-sensitized flaw detection developer with good suspensibility is prepared by mixing a solvent mixture with a solvent selected from aliphatic hydrocarbon and lipid solvent, wherein the solvent mixture is preferably one or a mixture of more of 120# solvent oil, n-heptane, ethyl acetate, methyl acetate, n-butyl acetate and sec-butyl acetate.
Preferably, the dye-sensitized ultrasonic testing developer with good suspensibility is prepared by selecting one or a mixture of more of calcium carbonate, superfine sericite powder and magnesium oxide as the adsorbent.
Preferably, the dye-sensitized flaw detection developer with good suspensibility is prepared from one or more of rosin modified alkyd resin, styrene modified alkyd resin and cellulose acetate.
Preferably, the dye check developer with good suspensibility, wherein the wetting dispersant is one or a mixture of several selected from alkylhydroxylammonium salts of acid group-containing copolymers, alkyl functional carboxylic acid ester acids and high molecular weight hydroxyalkylamides.
Preferably, the dye check developer with good suspensibility is provided, wherein the wetting dispersant is BYK-109.
Preferably, the dye-sensitized flaw detection developer with good suspensibility is prepared by mixing one or two of modified urea solution and fumed silica with a rheological aid.
Preferably, the dye check developer with good suspensibility is BYK-410, wherein the modified urea solution is BYK-410.
A method for preparing a dye check developer with good suspensibility comprises the following steps:
1) adding a mixed solvent and a limiting agent in sequence according to a proportion, and uniformly stirring to obtain a first mixed solution;
2) adding the adsorbent, the wetting dispersant and the rheological additive into the first mixed solution according to the proportion, and dispersing and stirring at a high speed to obtain a suspension;
3) filtering the suspension to obtain the dye check developer, packaging to obtain the product, and packaging the dye check developer in bulk or aerosol.
Preferably, the preparation method of the dye-sensitized flaw detection developer with good suspensibility comprises the step 3) of filtering the suspension by a filter screen with the specification of 150-200 meshes.
The invention has the beneficial effects that:
(1) the dye check developer prepared by the invention has the advantages of fine and uniform film formation, good developing effect, no coarse returning of the adsorbent, simple production process compared with the prior art, only high-speed dispersion, no need of grinding the developer by a grinding machine, good suspensibility, better stability and longer quality guarantee period compared with the traditional dye check developer.
(2) The dye check developer adsorbent of the invention selects white inorganic substance powder, the particle size of the adsorbent powder is small, the covering rate is high, the adhesive force of the coating can be improved, and the coating can be bonded with the substrate more firmly; the material is light and easy to disperse, and can improve the suspension force of a system, reduce layered precipitation and improve the storage stability; the rheological additive is one or a mixture of two of modified urea solution and fumed silica, and due to the addition of the rheological additive, the suspension property and the storage stability of the product can be greatly improved; the solvent type developer has good suspension property, so that the particle size range of the adsorbent is controlled without grinding by using a grinder, and the adsorbent can reach the expected particle size range only by using a high-speed dispersion machine for dispersion, thereby shortening the production period of the developer.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
The invention provides a dye check developer with good suspension property, which is characterized by comprising the following components in parts by weight:
as another embodiment of the disclosure, the mixed solvent is selected from aliphatic hydrocarbon and lipid solvent, and is selected from one or a mixture of several of 120# solvent oil, n-heptane, ethyl acetate, methyl acetate, n-butyl acetate and sec-butyl acetate.
As another embodiment of the disclosure, the adsorbent is selected from one or a mixture of calcium carbonate, ultra-fine sericite powder and magnesium oxide. The adsorbent selects white inorganic substance powder as the adsorbent, the particle size of the adsorbent powder is small, the covering rate is high, the adhesive force of the coating can be improved, and the coating can be bonded with the substrate more firmly; light weight, easy dispersion, improved suspending power, reduced layered precipitation, and improved storage stability.
As another embodiment of the present disclosure, the limiting agent is selected from one or a mixture of rosin-modified alkyd resin, styrene-modified alkyd resin, and cellulose acetate. The limiting agent is used for assisting the developing agent to form a film, and the preferable film forming agent is rosin modified alkyd resin, styrene modified alkyd resin and cellulose acetate.
As another embodiment, the wetting and dispersing agent is selected from one or more of alkylhydroxylammonium salt of copolymer containing acidic groups, alkyl functional carboxylic acid ester acid and high molecular weight hydroxyalkylamide. The wetting dispersant plays roles of dispersing, suspending and thickening, so that the developing agents are not easy to gather, can be uniformly dispersed after being sprayed out, form uniform and fine appearance, and ensure that the whole suspension system is stable and is not easy to layer and precipitate.
As another embodiment of the present application, the wetting dispersant is BYK-109.
As another embodiment of the present disclosure, the rheological additive is one or a mixture of two of a modified urea solution and fumed silica. Due to the addition of the rheological additive, the suspension property and the storage stability of the product can be greatly improved. The solvent type developer has good suspension property, so that the particle size range of the adsorbent is controlled without grinding by using a grinder, and the adsorbent can reach the expected particle size range only by using a high-speed dispersion machine for dispersion, thereby shortening the production period of the developer.
As another embodiment of the present application, the modified urea solution is BYK-410. BYK-410 deflocculates the pigment of the adsorbent by sterically stabilizing the adsorbent by steric stabilization of the pigment.
A method for preparing a dye check developer with good suspensibility comprises the following steps:
1) adding a mixed solvent and a limiting agent in sequence according to a proportion, and uniformly stirring to obtain a first mixed solution;
2) adding the adsorbent, the wetting dispersant and the rheological additive into the first mixed solution according to the proportion, and dispersing and stirring at a high speed to obtain a suspension;
3) and filtering the suspension to obtain the dye check developer, and packaging to obtain the product.
As another embodiment of the present disclosure, the size of the suspension filter screen in step 3) is 150-200 mesh.
Specific examples and comparative examples are listed below:
TABLE 1
The preparation method of the dye check developer comprises the following steps:
(1) sequentially adding the aliphatic hydrocarbon, the lipid mixed solvent and the limiting agent according to the proportion, and uniformly stirring to obtain a first mixture;
(2) adding the adsorbent, the wetting dispersant and the rheological additive into the first mixture according to the proportion, and dispersing and stirring at a high speed to obtain a white suspension;
(3) filtering the white suspension liquid, wherein the specification of a filter screen is 150 meshes, and obtaining a developer stock solution;
(4) packaging the developer stock solution in bulk or aerosol.
The results of the performance tests of examples 1-3 and comparative examples 1-2 are shown in Table 2:
TABLE 2
Judging the suspension property and the storage stability, pouring 75ml of developer liquid into a transparent glass bottle with a plug and a volume of 100ml, storing in a 43 ℃ oven for 7 days to accelerate the sedimentation process of the adsorbent, and observing the suspension state of the adsorbent in the developer after 7 days; the glass bottle is slowly inverted for three times, can be quickly and uniformly mixed without coarsening, and the bottom of the bottle is not attached with adsorbent powder, and is regarded as good in developer suspension property.
The developer can be matched with a dye check penetrant SKL-SP2 and a dye check cleaning agent SKC-S produced by American magnetic flux for use, and has sensitivity and removability for industry standard detection patterns of ISO3452-2 'nondestructive detection-penetration material test' in examples 1-3 and comparative examples 1-2.
The experimental results show that the developing agents of the embodiments 1-3 and the comparative examples 1-2 are fine and uniform in film formation, high in sensitivity and good in removability.
The results of comparative experiments according to example 1, example 2, example 3 show that: the developer of this example was well suspended, and the adsorbent powder attached to the bottom of the bottle was completely peeled off and rapidly mixed uniformly by slowly inverting the glass bottle one to three times.
The test results according to comparative examples 1 and 2 show that: the developer of the comparative example has poor suspension property, the glass bottle is slowly inverted for three times, part of the adsorbent powder is still attached to the bottom of the bottle, and the adsorbent powder attached to the bottom of the bottle can be uniformly mixed after the glass bottle is continuously and slowly inverted for 5-7 times.
The test results of example 1, example 2, example 3 and comparative example 1, comparative example 2 show that: the embodiment and the comparative example have the advantages that the developing agent is fine and uniform in film formation, the developing effect is good, and the adsorbent is not coarsened; further tests show that the suspensibility of the embodiment 1, the embodiment 2 and the embodiment 3 is better than that of the comparative example 1 and the comparative example 2, and further show that the superfine sericite powder is used as an adsorbent, and the high molecular weight hydroxyalkylamide is added as a rheological aid, so that the suspensibility of an imaging agent system is improved, and the storage stability of the solvent suspension type imaging agent can be greatly improved.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. The dye check developer with good suspension property is characterized by comprising the following components in parts by weight:
2. the dye-sensitized flaw detection developer with good suspensibility according to claim 1, wherein the mixed solvent is selected from one or a mixture of more of 120# solvent oil, n-heptane, ethyl acetate, methyl acetate, n-butyl acetate and sec-butyl acetate.
3. The developer for dye-sensitized flaw detection according to claim 1, wherein the adsorbent is selected from one or more of calcium carbonate, ultra-fine sericite powder and magnesium oxide.
4. The developer for dye-sensitized flaw detection with good suspensibility according to claim 1, wherein the limiting agent is selected from one or more of rosin-modified alkyd resin, styrene-modified alkyd resin, and cellulose acetate.
5. The developer for dye-sensitized flaw detection having good suspensibility according to claim 1, wherein said wetting and dispersing agent is selected from one or a mixture of several of alkylhydroxylammonium salts of acid group-containing copolymers, alkyl functional carboxylic acid ester acids, and high molecular weight hydroxyalkylamides.
6. The developer for stain detection having good suspensibility according to claim 5, wherein said wetting dispersant is BYK-109.
7. The developer for dye check with good suspensibility of claim 1, wherein said rheological aid is one or a mixture of two of modified urea solution and fumed silica.
8. The visual inspection developer with good suspensibility of claim 7, wherein said modified urea solution is BYK-410.
9. The method for producing the dye check developer with good suspensibility according to any one of claims 1 to 8, comprising the steps of:
1) adding a mixed solvent and a limiting agent in sequence according to a proportion, and uniformly stirring to obtain a first mixed solution;
2) adding the adsorbent, the wetting dispersant and the rheological additive into the first mixed solution according to the proportion, and dispersing and stirring at a high speed to obtain a suspension;
3) and filtering the suspension to obtain the dye check developer, and packaging to obtain the product.
10. The method for preparing a dye-sensitized flaw detection developer according to claim 9, wherein the suspension in step 3) has a filter mesh size of 150 to 200 mesh.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113447495A (en) * | 2021-06-29 | 2021-09-28 | 国网黑龙江省电力有限公司电力科学研究院 | High-temperature metal surface flaw detection method |
| CN113686889A (en) * | 2021-06-07 | 2021-11-23 | 吴江市宏达探伤器材有限公司 | Developer for detecting defects of oil-carrying container |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113686889A (en) * | 2021-06-07 | 2021-11-23 | 吴江市宏达探伤器材有限公司 | Developer for detecting defects of oil-carrying container |
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Application publication date: 20200103 |