CN108697213B - Gem color optimization method - Google Patents
Gem color optimization method Download PDFInfo
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- CN108697213B CN108697213B CN201880000351.9A CN201880000351A CN108697213B CN 108697213 B CN108697213 B CN 108697213B CN 201880000351 A CN201880000351 A CN 201880000351A CN 108697213 B CN108697213 B CN 108697213B
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C27/00—Making jewellery or other personal adornments
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C27/00—Making jewellery or other personal adornments
- A44C27/001—Materials for manufacturing jewellery
- A44C27/005—Coating layers for jewellery
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Abstract
The invention provides a gem color optimization method, which comprises the following steps: firstly, forming colored colloid on the gem; then, ultraviolet irradiation is carried out on the gemstones coated with the colloid; repeating the above operations to obtain the color optimized gem. The optimization method of the invention does not need to be fired, has simple process and low production cost, and can be widely applied to various gemstones needing color optimization; the optimized gem has better color effect, vivid color, is very close to the natural precious gem, can be subjected to jewelry electroplating, and has stable quality and high market value.
Description
Technical Field
The invention relates to the technical field of gem optimization, in particular to a gem color optimization method.
Background
Precious stones are always popular among people due to the special charm of the precious stones, and with the progress of science and technology, the living standard of people is increasingly improved, and the demand of people on precious stones is more and more great. Because of the limited resources in the nature, the development speed of the new gem deposit is far lower than the social demand, and the perfect and flawless natural products are extremely rare. Because of the limitation of natural resources, the supply and demand are in conflict, and it is determined that people need to improve the natural precious stones with poor quality so as to meet the social demands on the natural precious stones. Therefore, gemstone optimization is of great importance.
The optimization processing method of gem color is various, and the existing common gem color optimization method mainly comprises dyeing processing, heat treatment, diffusion processing, irradiation processing, bleaching processing, coating processing, filling processing, splicing processing and the like. The dyeing treatment method is most common in the gem industry, almost all gemstones and jades can be treated by dyeing, but the dyed gemstones may cause harm to human bodies due to the fact that some dyes contain chemical elements harmful to the human bodies. The common coating treatment is to coat a layer of dye on the surface of the gem or to coat a layer of coating film, most of which are metal films, for example, a zirconium gem processing technology disclosed in CN 105671490A, i.e. to evaporate a metal coating on the surface of a zirconium gem body; CN 1572541a discloses a method for manufacturing a ornament, which comprises coating a film containing a metal element on the surface of a gemstone. However, the existing gem processing method mainly has the following defects:
(1) the color effect of the processed gem is unstable, the color is poor, the gem is obviously artificial, and the market value is not high enough;
(2) after the jewel is inlaid, the jewel also has a process of electroplating, and the metal film is easy to partially fall off in the electroplating process due to the metal contained in the jewel, and the phenomena of peeling or spot appearance and the like (see attached figure 1) are caused, so that the appearance, the market acceptance degree and the sales volume are influenced, the customer complaints and reworking are easily caused, and the production cost is increased.
Therefore, how to find a color optimization method for gemstones which is simpler and can obtain better color effect is a problem to be solved.
Disclosure of Invention
Aiming at the problems in the existing gem color optimization process, the invention aims to provide a gem color optimization method. The method of the invention is based on the light curing principle, the gem can obtain better color effect without firing, and meanwhile, the gem can resist electroplating and can be widely applied to various gemstones needing color optimization.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a gem color optimization method, which comprises the following steps:
(1) forming colored colloid on the gem to obtain the gem covered with the colloid;
(2) irradiating the gem covered with the colloid by ultraviolet light;
(3) and (3) repeating the step (1) and the step (2) to obtain the color-optimized gem.
The method of the invention has no limitation on the material of the gem, is not influenced by the hardness, brittleness, high temperature resistance and acid-base resistance of the gem, and has universality on the gem.
The following technical solutions are preferred but not limited to the technical solutions provided by the present invention, and the technical objects and advantages of the present invention can be better achieved and realized by the following technical solutions.
As a preferred technical scheme of the invention, the step (1) forms a layer of colloid with color on the gem.
Preferably, the forming manner in the step (1) includes coating and/or evaporation.
Preferably, the coating is a manual coating and/or a mechanical coating.
As a preferred embodiment of the present invention, the colloid with color is any one of or a combination of at least two of polypropylene adhesive compound, resin adhesive compound or paint, and typical but non-limiting examples of the combination are: a combination of a polypropylene gum compound and a resin gum compound, a combination of a resin gum compound and paint, a combination of a polypropylene gum compound, a resin gum compound and paint, and the like.
The polypropylene rubber compound is used as the coating rubber, and the color generation of the coating rubber is optimal and is closest to natural precious stones.
As a preferred embodiment of the present invention, the polypropylene adhesive composition is a dyed polypropylene adhesive composition.
Preferably, the dyeing is carried out by using natural plant color paste, and the dyeing method is a conventional method in the prior art, so that the detailed description is omitted.
Preferably, the polypropylene adhesive compound is a mixture of polypropylene adhesive and a photoinitiator.
Preferably, the mass ratio of the polypropylene gum to the photoinitiator is (10-15: 1), for example, 10:1, 11:1, 12:1, 13:1, 14:1 or 15:1, but not limited to the recited values, and other values not recited within the range of the recited values are also applicable.
Preferably, the photoinitiator is an acrylate monomer photoinitiator.
Preferably, the resin adhesive compound is a dyed resin adhesive compound.
Preferably, the dyeing is carried out by using natural plant color paste, and the dyeing method is a conventional method in the prior art, so that the detailed description is omitted.
Preferably, the resin glue compound is a mixture of resin glue and a photoinitiator.
Preferably, the mass ratio of the resin glue to the photoinitiator is (15-20: 1), for example 15:1, 16:1, 17:1, 18:1, 19:1 or 20:1, but is not limited to the recited values, and other values not recited within the range of values are also applicable.
Preferably, the photoinitiator is an acrylate monomer photoinitiator.
Meanwhile, the colors of the polypropylene adhesive compound, the resin adhesive compound and the paint are selected according to the color of the actually processed gem.
In a preferred embodiment of the present invention, the colloid in step (1) is formed to a thickness of 0.01mm to 0.03mm, for example, 0.01mm, 0.013mm, 0.015mm, 0.017mm, 0.02mm, 0.023mm, 0.025mm, 0.027mm, or 0.03mm, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned value range are also applicable, and preferably 0.02 mm.
In a preferred embodiment of the present invention, the UV irradiation time in step (2) is 10min or less, for example, 1min, 2min, 3min, 4min, 5min, 6min, 7min, 8min, 9min or 10min, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned value range are also applicable, and preferably 5min or less.
In the present invention, the step (3) is preferably repeated at least 2 times, for example, 2 times, 3 times, 4 times, 5 times, 6 times, 7 times, 8 times, 9 times or 10 times, in the step (1) and the step (2), but the repetition is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable, preferably 2 to 3 times.
As a preferred technical scheme of the invention, the method comprises the following steps (4): and (4) forming protective glue on the color-optimized gem obtained in the step (3), and irradiating by ultraviolet light.
In the invention, in order to further protect the color of the gem after color optimization and maintain the stability of the surface colloid quality of the gem, protective glue can be formed on the gem after color optimization.
Preferably, the protective adhesive in step (4) is a mixture of natural resin, polypropylene adhesive and photoinitiator.
Preferably, the mass ratio of the natural resin, the polypropylene glue and the photoinitiator is (5-10): (10-15): (0.5-1), such as 5:10:0.5, 6:11:0.6, 7:12:0.7, 9:13:0.8 or 10:15:1, but not limited to the enumerated values, and other non-enumerated values within the numerical range are also applicable.
Preferably, the protective glue is a colorless protective glue.
In a preferred embodiment of the present invention, the UV irradiation time in step (4) is 10min or less, for example, 1min, 2min, 3min, 4min, 5min, 6min, 7min, 8min, 9min or 10min, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned value range are also applicable, and preferably 5min or less.
As a preferred embodiment of the present invention, before the colored gel is formed on the gemstone in the step (1), a layer of kissing agent is formed on the gemstone.
Preferably, the forming means comprises coating and/or evaporation.
Preferably, the coating is a manual coating and/or a mechanical coating.
Preferably, the gelling agent is a mixture of polyurethane, styrene acrylic acid, acrylate copolymer, vinyl cellulose butyrate and isopropanol, and the mixture can be mixed in any proportion, preferably (3-5): 0.5-1): 1-5.
Preferably, the reinforcing glue is formed on the semi-finished gemstone in step (4) before the protective glue is formed on the semi-finished gemstone, and the semi-finished gemstone is irradiated with uv light for 1min to 5min, such as 1min, 2min, 3min, 4min or 5min, but not limited to the recited values, and other values not recited in the range of values are also applicable.
Preferably, the forming means comprises coating and/or evaporation.
Preferably, the coating is a manual coating and/or a mechanical coating.
Preferably, the reinforcing glue is a mixture of polyurethane, acrylate copolymer, ethylene cellulose butyrate and isopropanol, and the mixture can be mixed in any proportion, preferably (5-10): 3-5): 0.5-1): 1-5.
Compared with the prior art, the invention has the following beneficial effects:
(1) the gem optimized by the method has better color effect, richer and vivid color, can achieve the same visual effect as precious gem, and has high market value;
(2) the jewel optimized by the method can be subjected to jewelry electroplating, the quality is stable, the production and rework costs can be reduced, the customer complaint rate is reduced, and the yield can reach 100%;
(3) the optimization method of the invention does not need to be fired, has simple process and wide application range, and can be widely applied to various gemstones which need color optimization, including various natural or artificial gemstones which are fragile, easy to crack and not high-temperature resistant.
Drawings
FIG. 1 is a pictorial representation of a gemstone treated in accordance with example 4 of the present invention;
FIG. 2 is a drawing showing a coated gemstone according to comparative example 1 of the present invention.
Detailed Description
In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
The invention provides a gem color optimization method, which comprises the following steps:
(1) forming colored colloid on the gem to obtain the gem covered with the colloid;
(2) irradiating the gem covered with the colloid by ultraviolet light;
(3) and (3) repeating the step (1) and the step (2) to obtain the color-optimized gem.
The following are typical but non-limiting examples of the invention:
example 1:
the embodiment provides a color optimization method of natural colorless transparent white crystal, which comprises the following steps:
(1) uniformly coating a blue polypropylene adhesive compound on the white crystal;
(2) irradiating the white crystal coated with the polypropylene adhesive compound for 2min under ultraviolet light;
(3) and (3) repeating the step (1) and the step (2) for 2 times to obtain the color-optimized gem.
The polypropylene adhesive compound is a mixture of polypropylene adhesive and acrylate monomer photoinitiator, and the mass ratio of the polypropylene adhesive compound to the acrylate monomer photoinitiator is 12: 1.
And (3) inlaying the optimized jewel on a jewelry, sending the jewel to an electroplating plant for electroplating, and observing the effect of the jewel after electroplating.
The appearance of the electroplated sapphire is very close to that of natural sapphire, the surface is smooth, the damage or degumming phenomenon is avoided, and the product yield reaches 99%.
Example 2:
the embodiment provides a color optimization method of natural colorless transparent white crystal, which comprises the following steps:
(1) uniformly coating an emerald-colored polypropylene rubber compound on the white crystal;
(2) irradiating the white crystal coated with the polypropylene adhesive compound for 2min under ultraviolet light;
(3) repeating the step (1) and the step (2) for 2 times to obtain the color-optimized gem;
(4) coating transparent colorless protective glue on the gem with the optimized color obtained in the step (3), and irradiating for 3min by ultraviolet light to obtain a finished product which is very close to the natural emerald;
the polypropylene adhesive compound is a mixture of polypropylene adhesive and acrylate monomer photoinitiator, and the mass ratio of the polypropylene adhesive compound to the acrylate monomer photoinitiator is 13: 1; the colorless protective adhesive is a mixture of natural resin, polypropylene adhesive and a photoinitiator, and the mass ratio of the natural resin to the polypropylene adhesive to the photoinitiator is 8:13: 0.7.
And (3) inlaying the optimized jewel on a jewelry, sending the jewel to an electroplating plant for electroplating, and observing the effect of the jewel after electroplating.
The appearance of the electroplated gem is very close to that of the natural emerald, the surface is smooth, the damage or degumming phenomenon does not occur, and the product yield reaches 100 percent.
Example 3:
the embodiment provides a color optimization method of natural colorless transparent white crystal, which comprises the following steps:
(1) uniformly evaporating a peach-red polypropylene adhesive compound on the white crystal;
(2) irradiating the white crystal subjected to the evaporation of the polypropylene adhesive compound for 3min under ultraviolet light;
(3) repeating the step (1) and the step (2) for 3 times to obtain the color-optimized gem;
(4) and (4) evaporating and plating transparent colorless protective glue on the color-optimized gem obtained in the step (3), and irradiating for 3min by using ultraviolet light to obtain a finished product which is very close to the Mozushi.
Wherein the polypropylene adhesive compound is a mixture of polypropylene adhesive and acrylate monomer photoinitiator, and the mass ratio of the polypropylene adhesive compound to the acrylate monomer photoinitiator is 10: 1; the colorless protective adhesive is a mixture of natural resin, polypropylene adhesive and a photoinitiator, and the mass ratio of the natural resin to the polypropylene adhesive to the photoinitiator is 5:10: 0.5.
The treatment of the optimized stone was the same as in example 1.
The appearance of the electroplated gem is very close to that of the rubberstone, the surface of the gem is smooth, the damage or the degumming phenomenon does not occur, and the product yield reaches 100 percent.
Example 4:
the embodiment provides a color optimization method of a colorless and transparent synthetic crystal, which comprises the following steps:
(1) uniformly coating red resin adhesive compounds on the synthetic crystal;
(2) irradiating the synthetic crystal coated with the resin adhesive compound for 3min under ultraviolet light;
(3) repeating the step (1) and the step (2) for 2 times to obtain the color-optimized gem;
(4) and (4) coating transparent colorless protective glue on the gem with the optimized color obtained in the step (3), and irradiating for 5min by using ultraviolet light to obtain a finished product which is very close to natural ruby.
Wherein the resin adhesive compound is a mixture of resin adhesive and acrylate monomer photoinitiator, and the mass ratio of the resin adhesive compound to the acrylate monomer photoinitiator is 17: 1; the colorless protective adhesive is a mixture of natural resin, polypropylene adhesive and a photoinitiator, and the mass ratio of the natural resin to the polypropylene adhesive to the photoinitiator is 10:15: 1.
Inlaying the optimized jewel on a jewelry and sending the jewel to a professional jewelry electroplating plant for electroplating rhodium platinum; as shown in figure 1, the appearance of the electroplated gem is very close to that of the natural ruby, the surface is smooth, the damage or the degumming phenomenon does not occur, and the product yield reaches 100 percent.
Example 5:
the embodiment provides a color optimization method of a colorless and transparent synthetic crystal, which comprises the following steps:
(1) coating a layer of kissing agent on the synthetic crystal, and then uniformly coating a mauve resin adhesive compound;
(2) irradiating the synthetic crystal coated with the resin adhesive compound for 2min under ultraviolet light;
(3) repeating the step (1) and the step (2) for 2 times to obtain the color-optimized gem;
(4) and (4) coating reinforcing glue on the color-optimized jewel obtained in the step (3), irradiating the jewel for 1min by using ultraviolet light, then coating transparent colorless protective glue, and irradiating the jewel for 3min by using the ultraviolet light to obtain a finished product which is very close to natural pink apyrite.
Wherein the resin adhesive compound is a mixture of resin adhesive and acrylate monomer photoinitiator, and the mass ratio of the resin adhesive compound to the acrylate monomer photoinitiator is 15: 1; the colorless protective adhesive is a mixture of natural resin, polypropylene adhesive and a photoinitiator, the mass ratio of the natural resin to the polypropylene adhesive to the photoinitiator is 7:12:0.6, and the reinforcing adhesive is a mixture of polyurethane, acrylate copolymer, ethylene cellulose butyrate and isopropanol; the gelling agent is a mixture of polyurethane, styrene acrylic acid, acrylate copolymer, vinyl cellulose butyrate and isopropanol.
Inlaying the optimized jewel on a jewelry and sending the jewel to a professional jewelry electroplating plant for electroplating rhodium platinum; the appearance of the electroplated gem is very close to that of natural pink tourmaline, the surface is smooth, the damage or degumming phenomenon does not occur, and the product yield reaches 100 percent.
Comparative example 1:
the comparative example provides an optimization method of a metal coating of a natural colorless transparent white crystal, and the white crystal is sent to a professional gem coating factory for coating, and the color of the coating is the same as that of the example 1, so that an optimized gem is obtained.
The treatment of the optimized stone was the same as in example 1.
The color effect of the coated gem is unstable, and the color generation is poor; after electroplating, as shown in fig. 2, the surface of the gem is partially peeled off, peeling, spots and the like appear, and the product yield is only 40%.
Comparative example 2:
this comparative example provides a method for color optimization of natural colorless transparent white water crystals, which is described with reference to example 1, except that: and (3) the steps (1) and (2) are not repeated any more, namely, the semi-finished product of the gem is obtained only by coating and lighting for 1 time.
The treatment of the optimized stone was the same as in example 1.
The appearance color of the electroplated gem is uneven, the visible coating times are reduced, the thickness of the blue polypropylene rubber compound is thin, the stress is uneven, and the appearance of the gem is influenced in the electroplating process.
By combining the embodiment and the comparative example, the gem obtained by the optimization method has better color effect, richer colors, more than one hundred different colors, vivid color and the same visual effect as the precious gem; the jewel obtained by the coating method has the advantages of few color types, unstable color effect, poor color generation, obvious artificial effect and low market value. In addition, the gem obtained by the optimization method can be subjected to electroplating, and the quality is stable, so that the production and rework costs are reduced, and the customer complaint rate is reduced; in the electroplating process of the gem obtained by the coating method, metal components in the film layer are easy to fall off, and the phenomena of peeling, spot formation and the like occur.
The applicant indicates that the present invention is illustrated in detail by the above examples, but the present invention is not limited to the above detailed application, that is, the present invention is not meant to be necessarily dependent on the above detailed method. It should be understood by those skilled in the art that any modification of the present invention, equivalent changes of the raw materials, and changes of the auxiliary conditions, selection of the specific mode, etc. are within the protection scope and the disclosure of the present invention.
Claims (29)
1. A method of gemstone color optimization, the method comprising the steps of:
(1) forming colored colloid on the gem to obtain the gem covered with the colloid; the colloid with color is any one or the combination of at least two of a polypropylene adhesive compound, a resin adhesive compound or paint, the polypropylene adhesive compound is the mixture of polypropylene adhesive and a photoinitiator, and the photoinitiator is an acrylate monomer photoinitiator;
(2) irradiating the gem covered with the colloid by ultraviolet light;
(3) repeating the step (1) and the step (2) to obtain the gem with optimized color;
(4) forming protective glue on the color-optimized gem obtained in the step (3), and irradiating by ultraviolet light;
wherein, before the colloid with color is formed on the gem in the step (1), a layer of kissing agent is formed on the gem, and the kissing agent is a mixture of polyurethane, styrene acrylic acid, acrylate copolymer, vinyl cellulose butyrate and isopropanol.
2. The method of claim 1, wherein step (1) forms a layer of colored gel on the gemstone.
3. The method of claim 1, wherein the forming of step (1) comprises coating and/or evaporation.
4. The method according to claim 3, wherein the coating is a manual coating and/or a mechanical coating.
5. The method of claim 1, wherein the polypropylene gum composition is a dyed polypropylene gum composition.
6. The method of claim 5, wherein the dyeing is performed using natural plant mill base.
7. The method according to claim 1, wherein the mass ratio of the polypropylene glue to the photoinitiator is (10-15): 1.
8. The method of claim 1, wherein the resin adhesive composite is a dyed resin adhesive composite.
9. The method of claim 8, wherein the dyeing is performed using natural plant mill base.
10. The method of claim 1, wherein the resin glue composite is a mixture of resin glue and a photoinitiator.
11. The method according to claim 10, wherein the mass ratio of the resin adhesive to the photoinitiator is (15-20): 1.
12. The method of claim 10, wherein the photoinitiator is an acrylate monomer photoinitiator.
13. The method according to claim 1, wherein the gel of step (1) is formed to a thickness of 0.01mm to 0.03 mm.
14. The method of claim 13, wherein the gel of step (1) is formed to a thickness of 0.02 mm.
15. The method of claim 1, wherein the UV irradiation time of step (2) is 10min or less.
16. The method of claim 15, wherein the UV irradiation time of step (2) is ≦ 5 min.
17. The method of claim 1, wherein step (1) and step (2) are repeated at least 2 times in step (3).
18. The method of claim 17, wherein step (1) and step (2) are repeated 2 to 3 times in step (3).
19. The method of claim 1, wherein the protective adhesive of step (4) is a mixture of natural resin, polypropylene adhesive and photoinitiator.
20. The method of claim 19, wherein the mass ratio of the natural resin, the polypropylene adhesive and the photoinitiator is (5-10): (10-15): (0.5-1).
21. The method of claim 1, wherein the protective glue is a colorless protective glue.
22. The method according to claim 1, wherein the UV irradiation time in step (4) is 10min or less.
23. The method as claimed in claim 22, wherein the UV irradiation time in step (4) is ≦ 5 min.
24. The method of claim 1, wherein the kissing agent is formed by coating and/or evaporation.
25. The method of claim 24, wherein the coating is a manual coating and/or a mechanical coating.
26. The method according to claim 1, wherein the step (4) is performed by forming a reinforcing paste on the semi-finished gemstone before forming the protective paste on the semi-finished gemstone, and irradiating the reinforcing paste with ultraviolet light for 1 to 5 minutes.
27. The method of claim 26, wherein the forming comprises coating and/or evaporation.
28. The method of claim 27, wherein the coating is a manual coating and/or a mechanical coating.
29. The method of claim 26, wherein the reinforcement glue is a mixture of polyurethane, an acrylate copolymer, ethylene cellulose butyrate, and isopropyl alcohol.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/084641 WO2019205056A1 (en) | 2018-04-26 | 2018-04-26 | Gemstone color improvement method |
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| CN108697213A CN108697213A (en) | 2018-10-23 |
| CN108697213B true CN108697213B (en) | 2020-04-03 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051115A (en) * | 2010-12-14 | 2011-05-11 | 惠州市凯辉化工有限公司 | Ultraviolet light curing colored paint and preparation method thereof |
| CN102366741A (en) * | 2010-06-29 | 2012-03-07 | D.施华洛世奇两合公司 | Jewelry stone with protective coating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102406290B (en) * | 2011-10-20 | 2014-05-07 | 牟小燕 | Fantastic artificial jewelry and preparation method thereof |
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- 2018-04-26 WO PCT/CN2018/084641 patent/WO2019205056A1/en active Application Filing
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366741A (en) * | 2010-06-29 | 2012-03-07 | D.施华洛世奇两合公司 | Jewelry stone with protective coating |
| CN102051115A (en) * | 2010-12-14 | 2011-05-11 | 惠州市凯辉化工有限公司 | Ultraviolet light curing colored paint and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 高频溅射法在宝石镀膜上的研究与应用;王嘉君;《高频溅射法在宝石镀膜上的研究与应用》;20100530;第30-35页 * |
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| CN108697213A (en) | 2018-10-23 |
| WO2019205056A1 (en) | 2019-10-31 |
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