Spraying liquid and method for removing colored patches on surface of silver ware

A technology for spraying liquid and silverware, which is applied in the field of spraying liquid for removing stains on the surface of silverware, can solve the problems of surface loss of silverware, complicated operation, etc., and achieves removing black or yellow stains, promoting catalytic activity, and restoring silverware. glossy effect

Inactive Publication Date: 2014-07-02
HANDAN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also problems such as cumbersome operation, requiring professionals to operate, and causing damage to the surface of silverware.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: The spraying solution used to remove the stain on the surface of silverware adopts the following raw materials and speckle removal method.

[0022] Preparation of the spraying solution: add 4 g of maltose, 0.8 g of nano-titanium dioxide, 8 g of propylene glycol and 0.2 g of sodium hydroxymethylcellulose into 84 g of deionized water, and stir evenly to prepare the spraying solution.

[0023] Stain removal: first clean the oil, dust, mud and other dirt on the surface of the silverware, then spray the spray liquid on the surface of the silverware, and then place the sprayed silverware under a 40w ultraviolet lamp with a main waveband less than 400nm for irradiation , the light source is 20cm away from the surface of the silverware; at natural temperature, keep the silverware still, after the accumulated light time is 24 hours, take out the silverware and rinse it with clean water.

[0024] Spot removal effect: Before treatment, there are black and yellow stai...

Embodiment 2

[0025] Embodiment 2: The spraying solution used to remove the stain on the surface of silverware adopts the following raw materials and speckle removal method.

[0026] Preparation of spraying liquid: add 3 g of fructose, 1.0 g of nano-titanium dioxide, 7 g of propylene glycol and 0.2 g of sodium hydroxymethylcellulose into 88 g of deionized water, and stir evenly to prepare the spraying liquid.

[0027] Stain removal: first clean the oil, dust, mud and other dirt on the surface of the silverware, then spray this spray liquid on the surface of the silverware, and then place the sprayed silverware under a 20w ultraviolet lamp with a main band less than 400nm for irradiation , the light source is 25cm away from the surface of the silverware; at natural temperature, keep the silverware still, and after the accumulated light time is 24 hours, take out the silverware and rinse it with clean water.

[0028] Spot removal effect: Before treatment, there are black and yellow stains on ...

Embodiment 3

[0029] Embodiment 3: The spraying solution used to remove the stains on the surface of silverware adopts the following raw materials and speckle removal methods.

[0030] Spraying solution preparation: Add 5 g of lactose, 0.5 g of nano-titanium dioxide, 5 g of propylene glycol and 0.3 g of polyoxyethylene alcohol into 78.7 g of deionized water, and stir evenly to prepare the spraying solution.

[0031] Stain removal: first clean the oil, dust, mud and other dirt on the surface of the silverware, then spray this spray liquid on the surface of the silverware, and then place the sprayed silverware under sunlight and fluorescent lamps, the distance between the fluorescent light source and the silverware The surface is 15cm; at natural temperature, keep the silverware still, and after the accumulated light time is 48 hours, take out the silverware and rinse it with clean water.

[0032] Spot removal effect: Before treatment, there are black and yellow stains on the surface of the s...

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PUM

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Abstract

The invention discloses a spraying liquid for removing colored patches on the surface of silver ware, which is prepared mainly by using the following components in parts by weight: 78.7-92.4 parts of deionized water, 1-5 parts of reducing sugar, 0.5-1 part of nano titanium dioxide, and 0.1-0.3 part of sodium carboxymethyl cellulose or polyoxyethylene glycol. The spraying liquid takes the nano titanium dioxide as a REDOX catalyst, the nano titanium dioxide absorbs light energy, and forms a large number of strong-reducibility photo-generated electrons in the liquid so as to reduce silver in colored patches of silver sulfide and the like into elemental silver; and the nano titanium dioxide produces a large number of strong-oxidizability photo-generated holes, then the photo-generated holes are reduced by the reducing sugar, and no secondary pollution is produced in the whole process. The reducing sugar in the spraying liquid is oxidized as a sacrificial agent, and meanwhile, the reducing sugar also has certain moisture absorption, and can be used as a moisturizer for promoting the catalytic activity of the nano titanium dioxide. The spraying liquid takes sodium carboxymethyl cellulose as a thickening agent and an adhesive, so that the spraying liquid can be attached to the surface of silver ware better, and then achieve a use effect.

Description

technical field [0001] The invention relates to a silverware cleaning liquid, in particular to a spraying liquid and a method for removing stains on the silverware surface. Background technique [0002] Utensils, jewelry, ornaments and other items made of silver have been loved by people since ancient times. Due to the natural characteristics of silver, after long-term contact with air or human sweat, black spots or yellow spots will appear on the surface of silverware, which will affect the surface luster of silverware. People usually mistake it for fading or fading. The main component of this black or yellow stain is silver sulfide, and there are also small amounts of silver chloride and silver oxide. In most cases, it is desired to remove these stains and restore the silver to its pristine whiteness. [0003] At present, these stains can be removed by physical or chemical methods, as follows: [0004] The physical method is to apply physical and mechanical force on the...

Claims

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Application Information

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IPC IPC(8): C23G1/24
Inventor 王岚任云王博
Owner HANDAN COLLEGE
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