CN1864580A - Pearl glossing process - Google Patents
Pearl glossing process Download PDFInfo
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- CN1864580A CN1864580A CN 200510050353 CN200510050353A CN1864580A CN 1864580 A CN1864580 A CN 1864580A CN 200510050353 CN200510050353 CN 200510050353 CN 200510050353 A CN200510050353 A CN 200510050353A CN 1864580 A CN1864580 A CN 1864580A
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- Prior art keywords
- pearl
- lustre
- gloss
- brightening process
- solvent
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 title claims abstract description 24
- 239000008367 deionised water Substances 0.000 claims abstract description 29
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000005282 brightening Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000002791 soaking Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims abstract description 3
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 claims description 97
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 42
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 23
- 230000003287 optical effect Effects 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 10
- 238000004061 bleaching Methods 0.000 claims description 10
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 10
- 239000001095 magnesium carbonate Substances 0.000 claims description 10
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 239000002932 luster Substances 0.000 claims description 8
- 239000001103 potassium chloride Substances 0.000 claims description 8
- 235000011164 potassium chloride Nutrition 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 159000000003 magnesium salts Chemical class 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- 159000000000 sodium salts Chemical class 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 abstract description 15
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 13
- 238000002203 pretreatment Methods 0.000 abstract description 2
- 238000007605 air drying Methods 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 239000011049 pearl Substances 0.000 description 97
- 230000006872 improvement Effects 0.000 description 29
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- 230000002708 enhancing effect Effects 0.000 description 18
- 238000012360 testing method Methods 0.000 description 13
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- 239000011777 magnesium Substances 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
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- 229910019440 Mg(OH) Inorganic materials 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
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Abstract
The present invention relates to pearl post-treating process, and is especially one pearl treating process, in which chemical reagent is used in treating pearl to raise pearl brightness. The pearl treating process includes the following steps: pre-treatment; compounding brightening solution with brightening material and solution in certain ratio and through homogeneous mixing; soaking pearl in the brightening solution to brighten at 10-40 deg.c for 1-15 days while changing the brightening solution every 2-3 days; and cleaning the pearl with deionized water and air drying. The process can improve the brightness of pearl, flatten its micro structure and make crystal arrangement in pearl compact and ordered.
Description
Technical field
The present invention relates to a kind of pearl aftertreatment technology, relate in particular to a kind of employing chemical reagent and improve nacreous treatment process.
Background technology
Gloss is one of leading indicator of pearl quality evaluation, and the gloss that improves pearl by adding lustre to is the important procedure in the pearl processing, and pearl is used and pearl bleaching is so remote but the history of pearl brightening process can not show a candle to.
Pearl is made up of organic matters such as inorganic matters such as aragonite and calcite and shell keratin, and wherein essential mineral-aragonite is layered arrangement, plays adhesive effect and organic matter is in interlayer.Utilize some materials that add lustre to fill the space and the hole on pearl surface, also can grind off the projection and the foreign material on surface, dirt and impurity to pearl surface and nearly surface adsorbs simultaneously, improves pearl to reflection of light and refraction effect, thereby improves the gloss of pearl;
In brightening process, mainly to consider following problems:
1. the kind of optical brightener: easily, have bigger ionic radius, be complementary, pearl is had certain enhanced shine, choose effect optical brightener preferably by test with the chemical composition of pearl with solvent formation saturated solution.
2. the concentration of optical brightener: the concentration of determining different optical brighteners by a large amount of tests.
3. the temperature of adding lustre to: the height of temperature has certain influence to the effect of adding lustre to, and higher temperature also can cause certain damage to pearl.
4. add lustre to the time: the time of adding lustre to can influence light enhancing effect, also can influence the cost that adds lustre to simultaneously.
5. the object that adds lustre to: to the relatively poor pearl of some pearly lusters, comprise the original pearl without any processing, the pearl that passes through bleaching and dyed pearls etc., also the good pearl of some pearly lusters is tested on a small quantity.
Chinese patent application (02137157.1) relates to bleaching shining and the colouring processing method of a kind of pearl, belong to and adopt chemistry, physics, biotechnology that pearl is carried out bleaching shining and dyeing processing technique field, it is characterized in that to put into the container that contains solid-phase reagent and size through the clean pearl after soaking pre-treatment earlier, under constant temperature, place after 3～8 days and take out, clean to dry and float pearl admittedly; To float pearl then admittedly and put into the container that contains liquid phase reagent, under constant temperature, place after 5～10 days and to take out, clean and dry into liquid and float pearl, also liquid can be floated pearl and put into the container that contains dyeing liquor again, under constant temperature, place after 5～10 days and take out, clean and dry into the dyeing pearl.Though association mechanisms such as this patent application utilization absorption bleaching, oxidation bleaching, fluorescent brightening, adopt solid-phase reagent and liquid phase reagent alternate treatment pearl, but the proportioning of prescription, the time of adding lustre to, the temperature of adding lustre to are controlled unreasonable because it adds lustre to, must cause the pearl surface texture out-of-flatness behind the bleaching shining, crystal structure arrangement is unordered, and light enhancing effect is relatively poor.
Summary of the invention
The present invention is directed to the unreasonable pearl surface texture out-of-flatness that causes behind the bleaching shining of the prescription that adds lustre to of prior art, the time of adding lustre to, the temperature of adding lustre to control, crystal structure arrangement is unordered, the shortcoming that light enhancing effect is relatively poor, the pearl brightening process of provide a kind of reasonable mixture ratio, time and the temperature of adding lustre to control is just right.
Above-mentioned technical problem of the present invention is finished by the following technical programs:
A kind of pearl brightening process may further comprise the steps:
1. preliminary treatment:
(1) classification is promptly carried out rough classification by thickness, color, gloss, form and the big wisp pearl of nacre, so that handle respectively.
(2) surface preparation wraps in gauze with pearl and is built in heat treated in the water-bath, and temperature generally is controlled at about 55 ℃, continues 3 hours to 80 hours, makes most of pigment be beneficial to bleaching in decomposition;
2. configuration luster adding liquid: will add lustre to material and solvent are configured in the port grinding bottle according to a certain percentage, and abundant mixing.
The preliminary formula table of optical brightener
| Numbering | Prescription |
| 1 | 0.1～2.0g weak base, 0.1～2.0g ammoniacal liquor, 200g deionized water |
| 2 | 0.1～4.0gKCl, 0.1～4.0g magnesium salts, 0.1～4.0gNaCl, 400g deionized water |
| 3 | 0.1～2.0g magnesium salts, 0.1～2.0g ammoniacal liquor, 200g deionized water |
| 4 | 0.1～2.0g basic magnesium carbonate, 0.1～2.0g ammoniacal liquor, 200g deionized water |
| 5 | 0.1～2.0g sylvite, 0.1～2.0g basic magnesium carbonate, 0.1～2.0gNaCl, 0.1～2.0g ammoniacal liquor, 200g deionized water |
| 6 | 0.1～2.0gNaCl, 0.1～2.0g sylvite, 0.1g weak base, 200g deionized water, 0.1～2.0g ammoniacal liquor |
| 7 | 0.1～2.0gNa 2SiO 3, 200g methyl alcohol |
| 8 | 0.1～10.0g amine salt, the 200g deionized water |
| 9 | 0.1～10.0gNa 2CO 3, 200g methyl alcohol |
| 10 | 0.1～10.0gNH 4Cl, the 200g deionized water |
| 11 | 0.1～10.0gNaOH, the 200g deionized water |
| 12 | 0.1～10.0g sodium acetate, the 200g deionized water |
3. add lustre to: above-mentioned pearl immersion is contained in the luster adding liquid of port grinding bottle, builds bottle cap; Changed liquid once every two to three days, and take out the pearl of soaking and observe the situation of adding lustre to; The time of wherein adding lustre to is about 1～15 day, and the temperature of adding lustre to is advisable with about 10～40 ℃.
4. cleaning sample: the pearl of above-mentioned taking-up is used washed with de-ionized water, remove the luster adding liquid of remained on surface after, dry.
As preferably, the described material that adds lustre to is one or more in magnesium salts, sylvite and the sodium salt.These add lustre to materials easily with solvent formation saturated solution, have bigger ionic radius, and be complementary with the chemical composition of pearl, on the one hand, these reagent that add lustre to may improve the structure on pearl surface; On the other hand, the solid matter in these reagent that add lustre to is in the lip-deep deposition of pearl, and feasible albedo to light increases, and so also may improve the glossiness of pearl.
As preferably, described magnesium salts is one or more in magnesium chloride or its hydrate, basic magnesium carbonate, the magnesium hydroxide.
As preferably, described sodium salt is one or more in sodium chloride, sodium metasilicate or its hydrate, the sodium carbonate.
As preferably, described sylvite is potassium chloride.
As preferably, described solvent is one or more in methyl alcohol, ammoniacal liquor and the deionized water.
As preferably, described optical brightener is made up of the material magnesium hydroxide that adds lustre to, add lustre to solvent ammoniacal liquor and deionized water, and its weight proportion is (1～20): (1～20): 100.
As preferably, described optical brightener is made up of the material basic magnesium carbonate that adds lustre to, add lustre to solvent ammoniacal liquor and deionized water, and its weight proportion is (1～20): (1～20): 100.
As preferably, described optical brightener is made up of the material sodium metasilicate that adds lustre to, the solvent methanol that adds lustre to, and its weight proportion is (1～20): 100.
As preferably, described optical brightener is made up of the material sodium carbonate that adds lustre to, the solvent methanol that adds lustre to, and its weight proportion is (1～20): 100.
Therefore the present invention has following effect:
The present invention adopts simple technical process that the pearly luster after adding lustre to is improved significantly than former pearl; Observe from microcosmic, the pearl surface texture after adding lustre to is also smooth than former pearl, and crystal arrangement becomes closely in order.
Description of drawings
Fig. 1 waits to add lustre to the pearl sample
Fig. 2 is Mg among the embodiment 1 (OH)
2Five kinds of concentration light enhancing effect figure
Fig. 3 is five kinds of concentration light enhancing effects of ammoniacal liquor figure among the embodiment 1
Fig. 4 is five kinds of concentration light enhancing effects of basic magnesium carbonate figure among the embodiment 2
Fig. 5 is five kinds of concentration light enhancing effects of ammoniacal liquor figure among the embodiment 2
Fig. 6 is Na among the embodiment 3
2SiO
3Five kinds of concentration light enhancing effect figure
Fig. 7 is Na among the embodiment 4
2CO
3Five kinds of concentration light enhancing effect figure
Fig. 8 is add lustre to time and the light enhancing effect figure of temperature of adding lustre to of difference
Fig. 9: comparison diagram before and after bulky grain white fresh water pearl is added lustre to
Figure 10 Φ 10mm left and right sides light orange fresh water pearl sample light enhancing effect comparison diagram
Figure 11: comparison diagram before and after sea water pearls adds lustre to
Figure 12: sample x3 adds lustre to and handles front and back polarized microscope analysis figure (200 times)
Figure 13: sample x3 adds lustre to and handles front and back scanning electron microscope analysis figure
The specific embodiment
Below be the specific embodiment of the present invention, and in conjunction with the accompanying drawings beneficial effect of the present invention be further elaborated, but the present invention is not limited to these embodiments.
Embodiment 1
The present invention add lustre to the test in used experimental facilities list in the table 1.Specimen in use is from the fresh water pearl of Jiangsu and Zhejiang Provinces one band.Color is from white to the lilac, and circularity is bad, and particle diameter is between 4-12mm, and versicolor laboratory sample is seen Fig. 1.
Table 1 adds lustre to and implements 1 equipment nomenclature
| Title | Specification and model | Unit | Quantity | Experiment and main application |
| Port grinding bottle | 100ml | Only | 40 | Be used for experiment and deposit laboratory sample |
| Beaker | 50ml | Only | 40 | Be used for experiment and deposit the required fluid sample of experiment |
| Graduated cylinder | 5，10，20，50ml | Only | 1 | Be used for the experiment weighing and test required liquid drug |
| Thermometer | 0～100℃ | Only | 2 | The environment temperature that is used for experiments of measuring |
| Volumetric flask | 100ml | Only | 1 | Be used to deposit laboratory sample |
| Electronic balance | METTLER TOLEDO AB204E maximum load 210g scale division value 0.1mg | Platform | 1 | What be used to add lustre to and test weighs |
| Tweezers | - | Only | 1 | Be used for the gripping laboratory sample |
| Spoon | - | Zhi | 3 | Be used to contain get and test required solid medicine |
| Dropper | - | Zhi | 3 | Be used for drawing the required liquid drug of experiment |
| Plastic fresh-keeping membrane | The normal domestic use type | Box | 3 | Be used for encapsulation and preserve laboratory sample |
| The fluorescent lamp thermostat | Platform | 1 | Be used for adding lustre to and brightening the constant temperature that experiment keeps experimental situation | |
| Petrographic microscope | leitz | Platform | 1 | Be used for the sample that adds lustre to is carried out performance test |
Select Mg (OH) for use
2, ammoniacal liquor, the optical brightener of deionized water adds lustre to pearl, add lustre to the test between must carry out preliminary treatment to pearl, fresh water pearl is generally adopted heat-treating methods, purpose all is that perlitic texture " is loosened ", produce hole, the pearl heat treatment time difference of different colours.Do the contrast experiment with deionized water heating among the present invention and to the pearl timing sampling in the heating process, observe pearl color and gloss, determine best pretreatment time in several time periods samplings over time to determine the heat treatment time of different samples.Through a large amount of test, seven kinds of pearl samples of six kinds of different colours color after boiling 6 hours with deionized water all bleaches gradually, wherein the increase of light orange pearl whiteness the most obviously and gloss do not subtract.6 hours the time of precooking is the most obvious to the pearl influence.Therefore 6 hours the time of precooking is that the best is precooked the time, and the test that adds lustre to is to carry out under normal temperature and pressure conditions, and the time is 7 days,
Select the Mg (OH) of variable concentrations
2, ammoniacal liquor, the 20g deionized water adds lustre to pearl: the variation of sample is listed in and is seen Table 2, and effect is seen Fig. 2, Fig. 3.
The prescription of variable concentrations is to the light enhancing effect of light orange pearl sample (x3) among table 2 embodiment 1
| Sample | Embodiment 1 | Quality (g) | Experimental phenomena |
| X3 light orange pearl | Variable is Mg (OH) 2Wherein ammoniacal liquor is 0.2g | 0.2 | Gloss has improvement a little |
| 0.4 | Gloss has more obviously improvement | ||
| 0.6 | Gloss has some improvement a little | ||
| 0.8 | Gloss has improvement, but not obvious | ||
| 1.0 | Gloss has improvement a little | ||
| Variable be ammoniacal liquor wherein | 0.2 | Gloss has more obviously improvement | |
| 0.4 | Gloss obviously improves, and brightness increases | ||
| 0.6 | Gloss has improvement slightly |
| Mg(OH) 2Be 0.4g | 0.8 | Gloss has improvement slightly | |
| 1.0 | Gloss has improvement slightly |
The preprocessing process of embodiment 2～4 is with embodiment 1: the prescription of selecting variable concentrations in embodiment 2～4 is to adding lustre to pearl: the variation of sample is listed in and is seen Table 3, and effect is seen Fig. 4～Fig. 7.
The prescription of variable concentrations is to the light enhancing effect of light orange pearl sample (x3) among table 3: the embodiment 2～4
Under the identical condition of other condition, the light enhancing effect of many pearls of time of adding lustre to has certain influence, adopt 1,3,7,15 day different time to the test that adds lustre to of light orange pearl respectively to four kinds of selected prescriptions, the experiment ambient temperature that adds lustre to also has certain influence to light enhancing effect, experimentize respectively under 10 ℃, 20 ℃, 30 ℃, 40 ℃ four temperature respectively, experimental period is 15 days.The variation of sample is listed in and is seen Table 3, table 4, and effect is seen Fig. 8.
Table 3: different time is to the influence of sample treatment effect
| Embodiment 1 | Sample | Time | Experimental phenomena |
| Prescription is 0.4gMg (OH) 2, 0.4g ammoniacal liquor, 20g deionized water | The light orange pearl | One day | Gloss has some improvement |
| Three days | Gloss has some improvement | ||
| Seven days | Gloss has clear improvement | ||
| 15 days | Gloss has improvement clearly, obviously finds out the increase of brightness and gloss | ||
| Embodiment 2 | Time | Experimental phenomena | |
| Prescription is the 0.6g basic magnesium carbonate, 0.4g ammoniacal liquor, the 20g deionized water | One day | Gloss does not have obvious improvement | |
| Three days | Gloss improves slightly | ||
| Seven days | Gloss has clear improvement | ||
| 15 days | Gloss has improvement significantly as can be seen | ||
| Embodiment 3 | Time | Experimental phenomena | |
| Prescription is 0.6gNa 2SiO 3, the methyl alcohol of 20g | One day | The gloss no change | |
| Three days | Gloss has some improvement | ||
| Seven days | Gloss has clear improvement | ||
| 15 days | The improving gloss highly significant | ||
| Embodiment 4 | Time | Experimental phenomena | |
| Prescription is 0.4gNa 2CO 3, 20g methyl alcohol | One day | The gloss no change | |
| Three days | Gloss has some improvement | ||
| Seven days | Gloss has clear improvement | ||
| 15 days | Gloss is significantly improved |
Table 4: under the condition of different temperatures to the influence of sample treatment effect
| Embodiment 1 | Sample | Temperature ℃ | Experimental phenomena |
| Prescription is 0.4gMg (OH) 2, 0.4g ammoniacal liquor, 20g deionized water | The light orange pearl | 10 | Gloss has improvement slightly |
| 20 | Improving gloss is obvious | ||
| 30 | Improving gloss is obvious | ||
| 40 | Gloss has improvement slightly | ||
| Embodiment 2 | Temperature ℃ | Experimental phenomena | |
| Prescription is the 0.6g basic magnesium carbonate, 0.4g ammoniacal liquor, the 20g deionized water | 10 | Improving gloss is obvious | |
| 20 | Improving gloss is obvious | ||
| 30 | Improving gloss is obvious | ||
| 40 | Gloss has improvement slightly | ||
| Embodiment 3 | Temperature ℃ | Experimental phenomena | |
| Prescription is 0.6gNa 2SiO 3, the methyl alcohol of 20g | 10 | Gloss changes slightly | |
| 20 | Some improvement of gloss | ||
| 30 | Improving gloss is obvious | ||
| 40 | Gloss has improvement slightly | ||
| Embodiment 4 | Temperature ℃ | Experimental phenomena | |
| Prescription is 0.4gNa 2CO 3, 20g methyl alcohol | 10 | Some improvement of gloss | |
| 20 | Some improvement of gloss | ||
| 30 | Gloss obviously improves | ||
| 40 | Gloss has improvement slightly |
To the test that adds lustre to of white about Φ 10mm and light orange fresh water pearl sample, experimental program is:
(1) prescription that adds lustre to: 1. 0.4Mg (OH)
2, 0.4g ammoniacal liquor, 20g deionized water; 4. 0.4gNa
2CO
3, 20g methyl alcohol.
(2) add lustre to the time: 15 days
(3) temperature of adding lustre to: 30 ℃
Light enhancing effect is seen Fig. 9,10, former pearl through preliminary treatment, add lustre to after gloss obviously improve, simultaneously color also shoals.
To the test that adds lustre to of bulky grain sea water pearls, experimental program is:
(1) prescription that adds lustre to: 2. 0.6g basic magnesium carbonate, 1g ammoniacal liquor, 20g deionized water; 3. 0.6gNa
2SiO
3, 20g methyl alcohol;
(2) add lustre to the time: 15 days
(3) temperature of adding lustre to: 30 ℃
But the back is found the gloss enhancing is also not obvious though add lustre to, and this is because the gloss of sea water pearls own is just fine, so change also not obvious.Gloss and color contrast are seen Figure 11 before and after adding lustre to.
Test and analysis
Pearl sample before and after adding lustre to is tested and analyzed, main petrographic microscope and the ESEM of adopting observed and analyzed the surface of pearl, with the variation on pearl surface before and after determining to add lustre to, thereby analyze the relation of pearly luster quality and pearl surface texture.
Polarized microscope analysis
Microscopic analysis photo such as Figure 12 before and after the main light orange pearl sample of this problem and sea water pearls sample added lustre to.
Interpretation of result shows
Can be found still to have a lot of defectives on its surface through the later freshwater cultured pearl that adds lustre to by Fig. 6-20 and Fig. 6-21, such as the top layer of nacre the decorative pattern and the lines of irregular form be arranged, step-like layered crystal is piled up inadequately evenly, closely; Also have some cavities on the top layer of nacre.These cavities may be because certain displacement reaction has taken place the surface mass of add lustre to prescription and nacre, produced new material crystal, and these crystal not well with not original those crystal combination together, thereby so that taken place that the obscission of crystal forms.Yet most surfaces of these pearls are still quite well-regulated, are embodied in: surperficial nacre is uniform layer structure, and crystal accumulation is tight.So the pearl of this type is handled the back apparent situation and makes moderate progress through adding lustre to, glossiness is also relatively good.
By Fig. 6-22 and Fig. 6-23 can find after treatment its surface ratio of sea water pearls ideal, nacre pile up very closely, very even, step-like nacre also is very clocklike.This be likely because, the surface quality of original this sea water pearls is just relatively good, after the processing through the reagent that adds lustre to, especially by displacement and co-conversion effect mutually between the crystal, repaired some the undesirable parts on the nacre marginal surface, made between the pearl superficial layer in conjunction with getting more closely continuously; For some original places that has cavity or depression, the reagent that adds lustre to is filled and led up them, makes the surperficial Paint Gloss, smooth of nacre.
The scanning electron microscope analysis light enhancing effect
The variation on pearl surface before and after the sample x3 that gloss is the relatively poor laggard line scanning electronic microscope photos that adds lustre to, observation sample surface topography relatively add lustre to.
Interpretation of result shows: can find from Figure 13: untreated pearl surface aragonite crystal size is inhomogeneous, arrange also very disorderly, loosely organized, the layer structure of crystal is very not obvious, pearl surface after the processing obviously becomes smooth, the aragonite crystal is connected to each other, and structure becomes closely, and layer structure is clear gradually.
Still there are some small ruts and crackle on the pearl surface after can finding to add lustre to from 5000 times of enlarged drawings of Fig. 6-25, and in the middle of these crackles, also filling the solid that left behind when the adding lustre to process reagent that adds lustre to.
In a word, the pearl later of adding lustre to is compared with former pearl, observed on macroscopic view through the pearl of adding lustre to, its glossiness is more much better than former pearl, observes on microcosmic, and the pearl surface texture after adding lustre to is also smooth than former pearl, and crystal arrangement becomes closely in order.On the one hand, this improvement of making on the structure on pearl surface with the reagent that adds lustre to is relevant; On the other hand, the solid matter in the reagent that adds lustre to is in the lip-deep deposition of pearl, and feasible albedo to light increases, and has so also improved the glossiness of pearl.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (10)
1. pearl brightening process may further comprise the steps:
1.1 preliminary treatment:
(1) classification is promptly carried out rough classification by thickness, color, gloss, form and the big wisp pearl of nacre, so that handle respectively;
(2) surface preparation wraps in gauze with pearl and is built in heat treated in the water-bath, and temperature generally is controlled at about 55 ℃, continues 3 hours to 80 hours, makes most of pigment be beneficial to bleaching in decomposition;
1.2 configuration luster adding liquid: will add lustre to material and solvent are configured in the port grinding bottle according to a certain percentage, and fully mixing forms optical brightener;
1.3 add lustre to: above-mentioned pearl immersion is contained in the luster adding liquid of port grinding bottle, builds bottle cap; Changed liquid once every 2～3 days, and take out the pearl of soaking and observe the situation of adding lustre to; The time of wherein adding lustre to is about 1～15 day, and the temperature of adding lustre to is 10～40 ℃;
1.4 cleaning sample: the pearl of above-mentioned taking-up is used washed with de-ionized water, remove the luster adding liquid of remained on surface after, dry.
2. pearl brightening process according to claim 1 is characterized in that, the described material that adds lustre to is one or more in magnesium salts, sylvite and the sodium salt.
3. pearl brightening process according to claim 1 is characterized in that, described magnesium salts is one or more in magnesium chloride or its hydrate, basic magnesium carbonate, the magnesium hydroxide.
4. pearl brightening process according to claim 1 is characterized in that, described sodium salt is one or more in sodium chloride, sodium metasilicate or its hydrate, the sodium carbonate.
5. pearl brightening process according to claim 1 is characterized in that, described sylvite is potassium chloride.
6. pearl brightening process according to claim 1 is characterized in that, described solvent is one or more in methyl alcohol, ammoniacal liquor and the deionized water.
7. according to the described pearl brightening process of claim 1～6, it is characterized in that described optical brightener is made up of the material magnesium hydroxide that adds lustre to, add lustre to solvent ammoniacal liquor and deionized water, its weight proportion is (1～20): (1～20): 100.
8. according to the described pearl brightening process of claim 1～6, it is characterized in that described optical brightener is by material basic magnesium carbonate, the sodium chloride of adding lustre to; Add lustre to solvent ammoniacal liquor, deionized water is formed, and the wherein wt proportioning is (1～20): (1～20): 100.
9. according to the described pearl brightening process of claim 1～6, it is characterized in that described optical brightener is made up of the material sodium metasilicate that adds lustre to, the solvent methanol that adds lustre to, wherein wt proportioning (1～20): 100.
10. according to the described pearl brightening process of claim 1～6, it is characterized in that described optical brightener is made up of the material sodium carbonate that adds lustre to, the solvent methanol that adds lustre to, the wherein wt proportioning is (1～20): 100.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497535B (en) * | 2008-01-30 | 2011-05-04 | 广东海洋大学 | Method for bleaching pearl by electrolysis method |
| CN101642315B (en) * | 2009-08-19 | 2011-08-17 | 石承开 | Color fixing and luster adding liquid for colored pearls and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497535B (en) * | 2008-01-30 | 2011-05-04 | 广东海洋大学 | Method for bleaching pearl by electrolysis method |
| CN101642315B (en) * | 2009-08-19 | 2011-08-17 | 石承开 | Color fixing and luster adding liquid for colored pearls and application thereof |
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