Silverware and silver ornament surface oxidation preparation method

Abstract

The invention relates to the technical field of chemical production, in particular to a silverware and silver ornament surface oxidation preparation method which comprises the following raw materials in percentage by weight: 40%-60% of sulfur powder, 15%-25% of sodium aliphatate, 15%-25% of ethyl alcohol and 5%-15% of drinking water. After 20 minutes, adding sodium aliphatate and drinking water, and stirring again until the sodium aliphatate and the drinking water are fully fused, and mixing liquid for 1 hour for use. Natural and edible materials are adopted in the aspect of materials, are non-toxic and harmless, do not contain waste materials, can be repeatedly used and are environmentally friendly, and human health is guaranteed. The used materials are cheap and easy to purchase, so that the production cost can be saved. The operation process is standard, raw material proportioning, mixing and stirring, standing and curing, brushing and subsequent treatment are strictly controlled, it is guaranteed that the quality of a mixed solution is stable, an oxide layer is uniform and flawless, the product quality and attractiveness are effectively improved, and meanwhile it is guaranteed that the production process is safe and sustainable.

Description

Technical Field

[0001] The invention relates to the technical field of chemical production, in particular to a preparation method for surface oxidation of silverware and silver ornaments. Background Art

[0002] As traditional handicrafts and daily necessities, silverware and silver jewelry have always attracted widespread attention for their beauty and durability. In the production process of silverware and silver jewelry, surface oxidation treatment is an important process link, which can not only enhance the texture of silverware, but also give it unique colors and patterns, thereby enhancing its artistic value and commercial value. With the increasing awareness of environmental protection and health, the traditional surface oxidation preparation method of silverware and silver jewelry can no longer meet the needs of modern society.

[0003] Traditional methods for preparing silverware and silver jewelry by oxidation often use chemical reagents, which often contain substances that are harmful to the human body, such as heavy metal ions and toxic gases. During the preparation process, these harmful substances may remain on the surface of silverware and silver jewelry, posing a potential threat to the health of users. In addition, the waste generated by traditional preparation methods is also difficult to handle, causing pollution to the environment.

[0004] In addition to environmental and health issues, traditional preparation methods also have defects such as high cost and complex processes. Some chemical reagents are expensive and require special storage and handling conditions, which increases production costs. At the same time, the process steps of traditional preparation methods are cumbersome and require strict control of reaction conditions and operating parameters. The slightest carelessness may lead to unstable product quality or defects. Summary of the invention

[0005] The purpose of the present invention is to provide a preparation method for surface oxidation of silverware and silver ornaments, so as to solve the problems of environmental protection, health and high preparation cost of traditional silverware and silver ornaments mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A preparation method for surface oxidation of silverware and silver ornaments, comprising the following raw materials in weight percentage: 40%-60% sulfur powder, 15%-25% sodium fatty acid, 15%-25% ethanol, and 5%-15% drinking water; specifically comprising the following steps:

[0008] S10: Weigh each raw material according to weight percentage;

[0009] Mixing and standing of S20 sulfur powder and ethanol: Slowly pour the weighed sulfur powder into a container filled with ethanol, and use an electric stirrer to stir the mixture at a medium speed until the sulfur powder is completely dissolved in the ethanol to form a uniform yellow solution. After stirring, let the mixture stand for 20 minutes to allow the sulfur and ethanol to fully react and stabilize;

[0010] S30 Fine mixing of sodium fatty acid and drinking water: slowly add sodium fatty acid under continuous stirring, observe the consistency change of the mixture while adding, and avoid local excessive concentration; similarly, slowly add drinking water and continue stirring to ensure that all ingredients are evenly distributed; the stirring speed should be moderate to avoid excessive bubbles that affect subsequent use; control the entire process to be carried out at room temperature to avoid excessive temperature causing denaturation of ingredients;

[0011] Standing and maturing of S40 mixed liquid: After stirring, pour the mixed liquid into a clean container, cover it with a lid, and let it stand for at least 1 hour to allow the ingredients to further blend and stabilize. During the standing period, gently shake the container several times to promote uniform distribution of the ingredients;

[0012] S50 painting operation: Before painting, clean the surface of the silverware and silver ornaments to be processed, use a clean brush to dip an appropriate amount of mixed solution, make sure there is no excess liquid dripping on the brush, and evenly apply it on the surface of the silverware and silver ornaments in the same direction. Be careful not to repeatedly paint the same area to avoid uneven color. After painting, place the silverware in a well-ventilated environment to dry naturally;

[0013] S60: Quality control and inspection precede safe handling and waste management, with attention to storage conditions and maintenance.

[0014] Preferably, the raw materials are included in the following weight percentages: 50% sulfur powder, 20% sodium fatty acid, 20% ethanol, and 10% drinking water.

[0015] Preferably, in step S20 and step S30, the ambient temperature is controlled at 20-30°C.

[0016] Preferably, the sulfur powder is in powder form with a particle size of 0.1-0.5 mm.

[0017] Preferably, during the standing period in step S40, the container is gently shaken 2-4 times to promote uniform distribution of the ingredients.

[0018] Preferably, in step S50, before painting, the operator wears chemical-resistant gloves.

[0019] Preferably, the specific steps of cleaning the surface of silverware and silver ornaments in step S50 are: first washing with clean water, and then drying with a dryer.

[0020] Preferably, the specific steps of the quality control and inspection are: sampling inspection of the prepared mixed solution to ensure that its physical properties such as color and viscosity meet the standards, and appearance inspection of the painted silverware to ensure that the oxide layer is uniform and flawless.

[0021] Preferably, the specific steps of the safe treatment and waste management are: waste generated during the preparation process, such as unused raw materials, waste liquid used for cleaning, etc., are properly handled in accordance with environmental protection regulations.

[0022] Preferably, the specific steps of storage conditions and maintenance are as follows: unused mixed solution should be sealed and stored in a cool, dry, well-ventilated place, avoiding direct sunlight and high temperature, and the storage environment should be checked regularly to ensure that the solution is not deteriorated or contaminated for next use.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The preparation method of silverware and silver ornaments surface oxidation of the present invention uses natural and edible raw materials, including sulfur powder, sodium fatty acid, ethanol and drinking water. These materials are non-toxic to the body, and no toxic waste is generated during the preparation process. They can be used repeatedly, which is more in line with modern people's pursuit of health and environmental protection. Compared with the toxic substances that may be generated by the traditional oxidation preparation method, the method of the present invention is healthier and safer.

[0025] 2. The raw materials used in the preparation method for surface oxidation of silverware and silver ornaments of the present invention are cheap and easy to purchase, which greatly reduces the production cost and is conducive to large-scale promotion and application. At the same time, the preparation steps are simple and clear, easy to operate and control, and improve production efficiency.

[0026] 3. The surface oxidation layer of silverware and silver ornaments processed by the preparation method of surface oxidation of silverware and silver ornaments of the present invention is uniform and beautiful, has good decorative effect and corrosion resistance, and can meet the needs of different consumers for silverware and silver ornaments.

[0027] In summary, the preparation method for surface oxidation of silverware and silver ornaments of the present invention has significant beneficial effects such as health and environmental protection, low cost, simple preparation, and excellent effect, and has broad application prospects and market value. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] Raw material ratio: sulfur powder 50%, sodium fatty acid 20%, ethanol 20%, drinking water 10%.

[0031] Steps:

[0032] S20: Slowly pour the weighed sulfur powder into a container filled with ethanol, stir with an electric stirrer at medium speed until it is completely dissolved to form a uniform yellow solution. After stirring, let the mixture stand for 20 minutes. The ambient temperature is controlled at 25°C.

[0033] S30: While stirring continuously, slowly add sodium fatty acid, observe the change in consistency, then slowly add drinking water, continue stirring evenly, and control the ambient temperature at 25°C.

[0034] S40: Pour the mixture into a clean container, cover it with a lid, and let it stand for 1 hour, shaking the container gently 3 times.

[0035] S50: Operators should wear chemical-resistant gloves, clean the surface of silverware and silver ornaments with clean water, and then dry them in a dryer. Use a clean brush to dip an appropriate amount of the mixed solution, and apply it evenly on the surface of the silverware and silver ornaments in the same direction, avoiding repeated application, and place the silverware in a well-ventilated place to dry naturally.

[0036] S60: Sample the prepared mixed solution to check its physical properties such as color and viscosity; perform an appearance inspection on the silverware after painting to ensure that the oxide layer is uniform and flawless. Waste generated during the preparation process, such as unused raw materials and waste liquid used for cleaning, should be properly handled in accordance with environmental protection regulations. Unused mixed solution should be sealed and stored in a cool, dry, well-ventilated place, avoiding direct sunlight and high temperatures, and the storage environment should be checked regularly.

[0037] Embodiment 2

[0038] Raw material ratio: sulfur powder 45%, sodium fatty acid 22%, ethanol 20%, drinking water 13%.

[0039] Steps:

[0040] S20: Pour sulfur powder into ethanol and stir at medium speed to dissolve to form a uniform yellow solution. After stirring, let the mixture stand for 20 minutes. The ambient temperature is controlled at 20℃.

[0041] S30: Slowly add sodium fatty acid and drinking water under continuous stirring, stir evenly, and control the ambient temperature at 20°C.

[0042] S40: Pour the mixture into a clean container, cover it with a lid, and let it stand for 1.5 hours, shaking the container gently 4 times.

[0043] S50: Wear chemical-resistant gloves, clean the surface of silverware and silver jewelry with clean water and then dry it. Dip a brush into the mixed solution and apply it evenly on the surface in the same direction without repeated application. Place the silverware in a well-ventilated place to dry naturally.

[0044] S60: Take samples of the mixed solution to check its physical properties and conduct an appearance check on the silverware after painting. Dispose of waste in accordance with environmental regulations. Store unused mixed solution in a sealed container in a cool, dry, well-ventilated place and check it regularly.

[0045] Embodiment 3

[0046] Raw material ratio: sulfur powder 55%, sodium fatty acid 18%, ethanol 20%, drinking water 7%.

[0047] Steps:

[0048] S20: Pour sulfur powder into ethanol and stir at medium speed until it is completely dissolved to form a uniform yellow solution. After stirring, let the mixture stand for 20 minutes. The ambient temperature is controlled at 30℃.

[0049] S30: Slowly add sodium fatty acid and drinking water under continuous stirring, stir evenly, and control the ambient temperature at 30°C.

[0050] S40: Pour the mixture into a clean container, cover it with a lid, and let it stand for 1.2 hours, shaking the container gently twice.

[0051] S50: Operators should wear chemical-resistant gloves. Clean the surface of silverware and silver jewelry with clean water and then dry it. Use a brush to dip an appropriate amount of the mixed solution and apply it evenly in the same direction without repeated application. Place the silverware in a well-ventilated place to dry naturally.

[0052] S60: Take samples of the mixed solution to check its physical properties and conduct an appearance check on the silverware after painting. Dispose of waste in accordance with environmental regulations. Store unused mixed solution in a sealed container in a cool, dry, well-ventilated place and check it regularly.

[0053] Comparative Example 1

[0054] Raw material ratio: 30% sulfur powder, 30% sodium fatty acid, 25% ethanol, 15% drinking water. (The ratio range of sulfur powder and sodium fatty acid specified in the claims has been changed)

[0055] Steps:

[0056] S20: Pour sulfur powder into ethanol and stir at medium speed until it is completely dissolved to form a uniform yellow solution. After stirring, let the mixture stand for 20 minutes. The ambient temperature is controlled at 25°C.

[0057] S30: Slowly add sodium fatty acid and drinking water under continuous stirring, stir evenly, and control the ambient temperature at 25°C.

[0058] S40: Pour the mixture into a clean container, cover it with a lid, and let it stand for 1 hour, shaking the container gently 3 times.

[0059] S50: Operators should wear chemical-resistant gloves. Clean the surface of silverware and silver jewelry with clean water and then dry it. Use a brush to dip an appropriate amount of the mixed solution and apply it evenly in the same direction without repeated application. Place the silverware in a well-ventilated place to dry naturally.

[0060] S60: Take samples of the mixed solution to check its physical properties and conduct an appearance check on the silverware after painting. Dispose of waste in accordance with environmental regulations. Store unused mixed solution in a sealed container in a cool, dry, well-ventilated place and check it regularly.

[0061] Comparative Example 2

[0062] Raw material ratio: sulfur powder 50%, sodium fatty acid 20%, ethanol 20%, drinking water 10%.

[0063] Steps:

[0064] S20: Pour sulfur powder into ethanol and stir at medium speed until it is completely dissolved to form a uniform yellow solution. After stirring, let the mixture stand for 20 minutes. The ambient temperature is controlled at 35°C (outside the temperature range specified in the claims).

[0065] S30: Slowly add sodium fatty acid and drinking water under continuous stirring, stir evenly, and control the ambient temperature at 35°C.

[0066] S40: Pour the mixture into a clean container, cover it with a lid, and let it stand for 1 hour, shaking the container gently 3 times.

[0067] S50: Operators should wear chemical-resistant gloves. Clean the surface of silverware and silver jewelry with clean water and then dry it. Use a brush to dip an appropriate amount of the mixed solution and apply it evenly in the same direction without repeated application. Place the silverware in a well-ventilated place to dry naturally.

[0068] S60: Take samples of the mixed solution to check its physical properties and conduct an appearance check on the silverware after painting. Dispose of waste in accordance with environmental regulations. Store unused mixed solution in a sealed container in a cool, dry, well-ventilated place and check it regularly.

[0069] The above three groups of examples and comparative examples are compared in terms of storage time, surface oxidation effect and safety performance of silverware and silver ornaments, as shown in the following table:

[0070] category Save time Surface oxidation effect Safety performance Embodiment 1 18 months and older The oxide layer is even and fine, with natural color, firmly combined with silverware, and can effectively resist daily wear and tear The entire preparation process strictly follows safety operating specifications, operators wear protective equipment, waste is properly handled, and there are no safety hazards Embodiment 2 Around 16 months The oxide layer is relatively uniform, the color is slightly deviated but not obvious, and it has a certain wear resistance The operation process complies with safety standards, protective measures are in place, waste is properly handled, and safety risks are low Embodiment 3 17 months and older The oxide layer has good uniformity, simple color, and is strong enough for daily use. Follow safety regulations, equip with protective equipment, dispose of waste in accordance with environmental protection requirements, and ensure safety Comparative Example 1 Around 12 months The oxide layer is uneven, some areas are too thick or too thin, the color is inconsistent, and the wear resistance is poor Due to the change in the ratio of raw materials, the reaction process is not very stable, but the protective measures are acceptable and the waste treatment is compliant, there are certain safety risks Comparative Example 2 Around 14 months The oxide layer has slight flaws, uneven color distribution, and average firmness Because the preparation temperature exceeded the specified range, a small amount of harmful gas was generated, but the protective measures effectively avoided personal injury, the waste treatment met the standards, and the safety risks were controllable.

[0071] The preparation method of the surface oxidation of silverware and silver ornaments of the present invention:

[0072] 1. Extending the shelf life: It can be seen from Examples 1, 2, and 3 that, by following the raw material ratio and operating steps of the preparation method, the shelf life of silverware and silver ornaments can reach more than 16 months, which is significantly longer than Comparative Example 1 (about 12 months) and Comparative Example 2 (about 14 months). Appropriate raw material ratios, such as the precise ratio of sulfur powder, sodium fatty acid, ethanol, and drinking water in the examples, and strictly controlled operating conditions, such as temperature, stirring, and standing time, promote the formation of a stable and dense oxide layer on the surface of the silverware, effectively resisting erosion from the external environment, thereby extending the shelf life of the silverware and silver ornaments.

[0073] 2. Optimize the surface oxidation effect: From the perspective of surface oxidation effect, the oxide layer of silverware and silver ornaments prepared in the examples is uniform and delicate, natural in color, and highly firm, which can meet the needs of aesthetics and daily use. The oxide layer of Example 1 is uniform and firmly combined with the silverware, which can effectively resist daily wear and tear; the oxide layers of Examples 2 and 3 also have good uniformity and color. In contrast, the oxide layer of Comparative Example 1 is uneven and inconsistent in color due to the change in the raw material ratio; the oxide layer of Comparative Example 2 has slight defects and uneven color distribution because the temperature exceeds the specified range. This shows that the preparation method has significant advantages in controlling the oxidation process and ensuring the consistency and stability of the oxidation effect.

[0074] 3. Improve safety performance: In terms of safety performance, this preparation method strictly follows safety regulations throughout the entire operation process. Operators wear protective equipment, and waste is properly handled in accordance with environmental protection requirements. No safety accidents occurred in the examples. Although the reaction in comparative example 1 is not very stable due to the change in the proportion of raw materials, protective measures are in place and waste treatment is compliant; although comparative example 2 produces a small amount of harmful gas due to temperature problems, protective measures effectively avoid personal injury. This further illustrates that as long as the requirements of this preparation method are followed, the surface oxidation treatment of silverware and silver jewelry can be completed under the premise of ensuring the safety of operators and the environment.

[0075] The preparation method of silverware and silver ornaments surface oxidation of the present invention has significant beneficial effects:

[0076] 1. Use natural and edible raw materials, including sulfur powder, sodium fatty acid, ethanol and drinking water. These materials are non-toxic to the body, and no toxic waste is generated during the preparation process. They can be used repeatedly, which is more in line with modern people's pursuit of health and environmental protection. Compared with the toxic substances that may be produced by the traditional oxidation preparation method, the method of the present invention is healthier and safer.

[0077] 2. The raw materials used are cheap and easy to purchase, which greatly reduces the production cost and is conducive to large-scale promotion and application. At the same time, the preparation steps are simple and clear, easy to operate and control, and improve production efficiency.

[0078] 3. The surface oxide layer of silverware and silver ornaments prepared by the method of the present invention is uniform and beautiful, has good decorative effect and corrosion resistance, and can meet the needs of different consumers for silverware and silver ornaments.

[0079] In summary, the preparation method for surface oxidation of silverware and silver ornaments of the present invention has significant beneficial effects such as health and environmental protection, low cost, simple preparation, and excellent effect, and has broad application prospects and market value.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preparing silverware and silver ornaments by surface oxidation, characterized in that: The method comprises the following raw materials in weight percentage: 40%-60% sulfur powder, 15%-25% sodium fatty acid, 15%-25% ethanol, and 5%-15% drinking water; the method specifically comprises the following steps: S10: Weigh each raw material according to weight percentage; Mixing and standing of S20 sulfur powder and ethanol: Slowly pour the weighed sulfur powder into a container filled with ethanol, and use an electric stirrer to stir the mixture at a medium speed until the sulfur powder is completely dissolved in the ethanol to form a uniform yellow solution. After stirring, let the mixture stand for 20 minutes to allow the sulfur and ethanol to fully react and stabilize; S30 Fine mixing of sodium fatty acid and drinking water: slowly add sodium fatty acid under continuous stirring, observe the consistency change of the mixture while adding, and avoid local excessive concentration; similarly, slowly add drinking water and continue stirring to ensure that all ingredients are evenly distributed; the stirring speed should be moderate to avoid excessive bubbles that affect subsequent use; control the entire process to be carried out at room temperature to avoid denaturation of ingredients due to excessive temperature; Standing and maturing of S40 mixed liquid: After stirring, pour the mixed liquid into a clean container, cover it with a lid, and let it stand for at least 1 hour to allow the ingredients to further blend and stabilize. During the standing period, gently shake the container several times to promote uniform distribution of the ingredients; S50 painting operation: Before painting, clean the surface of the silverware and silver ornaments to be processed, use a clean brush to dip an appropriate amount of mixed solution, make sure there is no excess liquid dripping on the brush, and evenly apply it on the surface of the silverware and silver ornaments in the same direction. Be careful not to repeatedly paint the same area to avoid uneven color. After painting, place the silverware in a well-ventilated environment to dry naturally; S60: Quality control and inspection precede safe handling and waste management, with attention to storage conditions and maintenance.

2. The method for preparing silverware and silver ornaments by surface oxidation according to claim 1, characterized in that: The invention comprises the following raw materials in weight percentage: 50% sulfur powder, 20% sodium fatty acid, 20% ethanol and 10% drinking water.

3. The method for preparing surface oxidation of silverware and silver ornaments according to claim 1, characterized in that: In step S20 and step S30, the ambient temperature is controlled at 20-30°C.

4. The method for preparing surface oxidation of silverware and silver ornaments according to claim 1, characterized in that: The sulfur powder is in powder form with a particle size of 0.1-0.5 mm.

5. The method for preparing surface oxidation of silverware and silver ornaments according to claim 1, characterized in that: During the standing period in step S40, the container is gently shaken 2-4 times to promote uniform distribution of the ingredients.

6. The method for preparing surface oxidation of silverware and silver ornaments according to claim 1, characterized in that: In step S50, before painting, the operator wears chemical-resistant gloves.

7. The method for preparing silverware and silver ornaments by surface oxidation according to claim 1, characterized in that: The specific steps of cleaning the surface of silverware and silver ornaments in step S50 are: firstly washing with clean water, and then drying with a dryer.

8. The method for preparing silverware and silver ornaments by surface oxidation according to claim 1, characterized in that: The specific steps of the quality control and inspection are: sampling and inspecting the prepared mixed solution to ensure that its physical properties such as color and viscosity meet the standards, and inspecting the appearance of the painted silverware to ensure that the oxide layer is uniform and flawless.

9. The method for preparing silverware and silver ornaments by surface oxidation according to claim 1, characterized in that: The specific steps of the safe treatment and waste management are as follows: waste generated during the preparation process, such as unused raw materials, waste liquid used for cleaning, etc., shall be properly handled in accordance with environmental protection regulations.

10. The method for preparing silverware and silver ornaments by surface oxidation according to claim 1, characterized in that: The specific steps of the storage conditions and maintenance are as follows: unused mixed solutions should be sealed and stored in a cool, dry, well-ventilated place, avoiding direct sunlight and high temperature. The storage environment should be checked regularly to ensure that the solution is not deteriorated or contaminated for next use.