宝石和宝石学杂志
寶石和寶石學雜誌
보석화보석학잡지
Journal of Gems & gemmology
2012年
4期
16-22
,共7页
王铎%陈征%邓常劼%莫祖荣%曹姝旻
王鐸%陳徵%鄧常劼%莫祖榮%曹姝旻
왕탁%진정%산상할%막조영%조주민
宝石%有机胶%充填%净度分级
寶石%有機膠%充填%淨度分級
보석%유궤효%충전%정도분급
gems%polymer%filling%clarity grading
有机胶充填技术作为一种加工工艺,已普遍应用于宝石加工中。为进一步研究有机胶充填宝石,对来自广州荔湾广场各种宝石样品进行放大检查、紫外荧光、红外光谱研究。放大检查表明,通过内、外部的充填特征,可以确定几乎市场上常见的宝石均存在有机胶充填现象;紫外荧光测试表明,裂隙或结构间隙中分布的有机胶充填物的荧光特征,可以作为有机胶充填检测中辅助的测试;红外光谱测试表明,各种宝石中充填有机胶均属于环氧树脂类,主要存在4 060,3 060,3 035cm-1处弱的锐形吸收峰,2 970或2 962cm-1,2 929或2 935cm-1,2 870或2 865cm-1(海蓝宝石中为2 859cm-1)为中心的3处吸收峰。不同体积比例充填碧玺中:随充填物比例增加,3 056,3 034cm-1处弱的吸收峰未出现明显变化,而2 965,2 924,2 862cm-1处强的吸收峰,先变得更尖锐,随后变成平缓的吸收谷。建议将以碧玺为例提出的有机胶充填宝石净度分级标准应用于检测工作。
有機膠充填技術作為一種加工工藝,已普遍應用于寶石加工中。為進一步研究有機膠充填寶石,對來自廣州荔灣廣場各種寶石樣品進行放大檢查、紫外熒光、紅外光譜研究。放大檢查錶明,通過內、外部的充填特徵,可以確定幾乎市場上常見的寶石均存在有機膠充填現象;紫外熒光測試錶明,裂隙或結構間隙中分佈的有機膠充填物的熒光特徵,可以作為有機膠充填檢測中輔助的測試;紅外光譜測試錶明,各種寶石中充填有機膠均屬于環氧樹脂類,主要存在4 060,3 060,3 035cm-1處弱的銳形吸收峰,2 970或2 962cm-1,2 929或2 935cm-1,2 870或2 865cm-1(海藍寶石中為2 859cm-1)為中心的3處吸收峰。不同體積比例充填碧璽中:隨充填物比例增加,3 056,3 034cm-1處弱的吸收峰未齣現明顯變化,而2 965,2 924,2 862cm-1處彊的吸收峰,先變得更尖銳,隨後變成平緩的吸收穀。建議將以碧璽為例提齣的有機膠充填寶石淨度分級標準應用于檢測工作。
유궤효충전기술작위일충가공공예,이보편응용우보석가공중。위진일보연구유궤효충전보석,대래자엄주려만엄장각충보석양품진행방대검사、자외형광、홍외광보연구。방대검사표명,통과내、외부적충전특정,가이학정궤호시장상상견적보석균존재유궤효충전현상;자외형광측시표명,렬극혹결구간극중분포적유궤효충전물적형광특정,가이작위유궤효충전검측중보조적측시;홍외광보측시표명,각충보석중충전유궤효균속우배양수지류,주요존재4 060,3 060,3 035cm-1처약적예형흡수봉,2 970혹2 962cm-1,2 929혹2 935cm-1,2 870혹2 865cm-1(해람보석중위2 859cm-1)위중심적3처흡수봉。불동체적비례충전벽새중:수충전물비례증가,3 056,3 034cm-1처약적흡수봉미출현명현변화,이2 965,2 924,2 862cm-1처강적흡수봉,선변득경첨예,수후변성평완적흡수곡。건의장이벽새위례제출적유궤효충전보석정도분급표준응용우검측공작。
Polymer filling technology has been widely applied to the processing of gems. In order to further study polymer-filled gems, the authors tested the gems samples sold on Li- wan plaza from Guangzhou by magnifying inspection, ultraviolet fluorescence and infrared spectrum (IR) testing methods. Magnifying inspection on internal and external characteris- tics of fillings shows that almost all gems sold on the market are filled by polymer. Ultravio-let fluorescence results show that the fluorescence characteristics of polymer filled in the fracture and structural gap can be used as subsidiary technique for the polymer-filled gems. It is also proved that the polymer filled in gems is epoxy resin by IR. The IR spectra of poly-mer have sharp peaks about 4 060, 3 060, 3 035 cm^-1 and three stronger peaks at the center of 2 970 or 2 962 cm^-1 , 2 929 or 2 935 cm^-1 , 2 870 or 2 865 cm^-1 (2 859 cm^-1 for aquama-rine). The IR spectra of different volume proportions of polymer filled in tourmalines show that the weak absorption peaks have no obvious change with the filling ratio increases at 3 056, 3 034 cm^-1, but the strong absorption peaks at 2 965, 2 924, 2 862 cm^-1 become more sharp, and then fall to a gentle absorption valley. The clarity grading standard for pol-ymer-filled tourmaline is suggested to apply for testing of polymer-filled gems.