Organic amber and preparation method thereof
A technology of organic succinic acid and succinic acid, which is applied in the field of gemstones to achieve the effects of easy operation, low cost and simple synthesis method
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Embodiment 1
[0022] Embodiment 1: the preparation method of organic amber, concrete operations are as follows:
[0023] Pour succinic acid powder into the crucible, then add phthalic anhydride powder, mix the two thoroughly, then add glycerin, stir evenly, wherein the molar ratio of succinic acid: glycerol: phthalic anhydride is 1:1:1 , then slowly raise the temperature from room temperature to 160°C at a heating rate of 5°C / min, and hold for 3 hours for pre-firing; finally, slowly raise the temperature at a rate of 3°C / min from 160°C to 200°C, and hold for 3 hours for curing, and the curing is complete After cooling down to room temperature naturally, take it out to get organic amber.
[0024] The organic amber produced with this ratio has a refractive index of 1.55 and a density of 1.11. It is weak blue-green under long and short ultraviolet fluorescence, and its appearance is yellowish-brown, transparent to translucent, with oily luster and hardness similar to natural amber. The physic...
Embodiment 2
[0025] Embodiment 2: the preparation method of organic amber, concrete operations are as follows:
[0026] Pour the succinic acid powder into the crucible, then add the phthalic anhydride powder, mix the two thoroughly, add glycerol, and mix it evenly with a stirring rod, wherein the molar ratio of succinic acid: glycerol: phthalic anhydride is 2:1:1, then slowly raise the temperature from room temperature to 170°C at a heating rate of 3°C / min, keep warm for 2 hours for pre-firing; finally, slowly raise the temperature at a heating rate of 5°C / min from 170°C to 210°C, and keep warm for 2 hours Carry out solidification, cool naturally to room temperature after solidification is completed, take out and obtain organic amber.
[0027] The organic amber produced with this ratio has a refractive index of 1.52 and a density of 1.31. It is weak blue-green under long and short ultraviolet fluorescence, and its appearance is light yellow-brown, transparent to translucent, with a greasy ...
Embodiment 3
[0028] Embodiment 3: the preparation method of organic amber, concrete operation is as follows:
[0029] Pour succinic acid powder into the crucible, then add phthalic anhydride powder, mix the two thoroughly, then add glycerin, stir evenly, wherein the molar ratio of succinic acid: glycerol: phthalic anhydride is 3:1:1 , then slowly raise the temperature from room temperature to 165°C at a rate of 4°C / min, and keep it warm for 2.5 hours for pre-burning; finally, slowly raise the temperature at a rate of 4°C / min from 165°C to 205°C, keep it for 2.5 hours for curing, and the curing is complete After cooling down to room temperature naturally, take it out to get organic amber.
[0030] The organic amber produced with this ratio has a refractive index of 1.52 and a density of 1.39. It is weak green under long and short ultraviolet fluorescence, and its appearance is very light yellowish brown, translucent to opaque, with a greasy luster and lower hardness than natural amber.
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