Water-based biodegradable penetrant and preparation method and application thereof

A penetrant, water-based technology used in optical testing for flaws/defects to reduce health risks, ease of operation, and lower production costs

Pending Publication Date: 2021-07-23
CRRC QISHUYAN INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the increasingly stringent conditions of environmental protection, safety and sanitation, the application of Sudan Red has been restricted by some laws and regulations, and it has gradually been banned from being used as a pigment.

Method used

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  • Water-based biodegradable penetrant and preparation method and application thereof
  • Water-based biodegradable penetrant and preparation method and application thereof
  • Water-based biodegradable penetrant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0073] A preparation method of a water-based biodegradable penetrating agent, comprising the steps of:

[0074] (1) Under normal temperature conditions, prepare 1000 liters of water with a pH value of 7-9, the normal temperature conditions are 10-38°C, and the relative humidity is less than 85%;

[0075] (2) Add 1.0 to 1.5 Kg of surfactant in water and stir for 30 minutes at a stirring speed of 200 rpm;

[0076] (3) Slowly add 1.5-3.0 Kg of food-grade carmine as a pigment into the water, and stir with a stirrer during the addition to accelerate the process of dissolving the pigment in water. Stir for 30 minutes at a stirring speed of 200 rpm;

[0077] (4) After the pigment is completely dissolved, add 8.0-12.0 Kg of stable neutralizer to prolong the service life and storage life of the product, and stir for 10 minutes at a stirring speed of 100 rpm; the water-based biodegradable penetrant is prepared finished product.

[0078] The application process of the above water-based...

Embodiment 1

[0086] A water-based biodegradable penetrant comprising food grade carmine, water, tartaric acid and lauryl oleyl alcohol; the concentration of food grade carmine is 1.5g / 1000ml, the concentration of tartaric acid is 8.0g / 1000ml, lauryl oleyl alcohol The concentration is 1.0g / 1000ml.

[0087] As a stable neutralizer, tartaric acid maintains the stability of the entire solution and does not generate new chemical substances; when there are alkaline conditions that can interfere with the penetrant in the external use environment, C 4 h 6 o 6 [H + ] + [OH － ] →C 4 h 6 o 6 + H 2 O resists the interference of external alkaline conditions and can play a neutral role.

[0088] Lauryl oleyl alcohol exists in a molecular state in the solution, so it has high stability and is not easily affected by the presence of strong electrolytes, acids, and alkalis. It can be mixed with other types of surfactants and has good compatibility. Well, it has good solubility in various solvents...

Embodiment 2

[0091] A water-based biodegradable penetrant, including food-grade carmine, water, tartaric acid and palmitic alcohol; the concentration of food-grade carmine is 2.0g / 1000ml, the concentration of citric acid is 8.0g / 1000ml, and the concentration of palmitic alcohol is 1.0g / 1000ml.

[0092] As a stable neutralizer, citric acid maintains the stability of the entire solution and does not produce new chemical substances; when there are alkaline conditions that can interfere with the penetrant in the external environment, C 6 h 8 o 7 [H + ] + [OH － ] →C 6 h 8 o 7 + H 2 O resists the interference of external alkaline conditions and can play a neutral role.

[0093] Palm alcohol exists in a molecular state in the solution, so it has high stability and is not easily affected by strong electrolytes, acids and alkalis. It can be mixed with other types of surfactants and has good compatibility. It has good solubility in various solvents and does not strongly adsorb on solid su...

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Abstract

The invention relates to a water-based biodegradable penetrant and a preparation method thereof. The water-based biodegradable penetrant comprises food-grade carmine, a solvent, a stable neutralizer and a surfactant, the concentration of the food-grade carmine is 1.5-3.0 g / 1000 ml, the concentration of the stable neutralizer is 8.0-12.0 g / 1000 ml, the concentration of the surfactant is 1.0-1.5 g / 1000 ml, and the solvent is water. According to the present invention, the design is reasonable, the food-grade carmine is adopted as the pigment to replace the existing Sudan red, the food-grade carmine is adopted as the food-grade pigment, such that the health and the environmental protection are provided while the water-based requirement is met, the food-grade carmine is dissolved in water to form the solution with the high color contrast, the process parameter requirement of the penetration detection is met, the sensitivity is high, and five artificial defects on the type 2 reference test block can be clearly displayed; the water-based biodegradable penetrant is low in toxicity, so that the health risk of operators can be reduced.

Description

technical field [0001] The invention relates to the technical field of nondestructive testing, in particular to a water-based biodegradable penetrant, a preparation method and an application thereof. Background technique [0002] According to the current severe situation of environmental pollution and wastewater treatment, in the non-destructive testing industry, especially in the field of penetrant testing, due to the certainty and particularity of the process, a large amount of seepage wastewater, that is, sewage containing penetrants, will be generated during the process. If it is discharged directly, it will cause irreversible harm to the natural environment; if it is treated with sewage, it will be a considerable operating cost. [0003] According to the existing national standard GB 8978 on sewage discharge (as shown in Table 1), under the severe pressure of environmental protection, the discharge standards are becoming more and more stringent, and the discharge standa...

Claims

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Application Information

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IPC IPC(8): G01N21/91
CPCG01N21/91
Inventor 章文显马善民万升云桑劲鹏郑小康李广立钱政平
Owner CRRC QISHUYAN INSTITUTE CO LTD
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