CN1459663A - Nickel sulfide nano particle sensitizing agent and its preparation method - Google Patents
Nickel sulfide nano particle sensitizing agent and its preparation method Download PDFInfo
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- CN1459663A CN1459663A CN 02117378 CN02117378A CN1459663A CN 1459663 A CN1459663 A CN 1459663A CN 02117378 CN02117378 CN 02117378 CN 02117378 A CN02117378 A CN 02117378A CN 1459663 A CN1459663 A CN 1459663A
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Abstract
A sensibilizing agent for the photosensing silver halide emulsion is prepared through dispersing the solution of water-soluble Ni salt and the solution of water-soluble S-contained compound in a water-soluble high-molecular compound at 10-100 deg.C, and stirring. It contains nickel sulfide nanoparticles. It can decrease the latent image dispersing and gray fog and increase photosensitivity and contrast.
Description
Technical field
The invention belongs to the photosensitive silve halide material technical field, particularly a kind of nickel sulfide nano particle sensitizer and its production and use.
Background technology
The sensitizing of silver halide microcrystal emulsion mainly contains chemical sensitization and spectral sensitization.The purpose of chemical sensitization mainly is to improve the light sensitivity of silver halide microcrystal emulsion at its intrinsic spectral region, and spectral sensitization mainly is to improve light sensitivity by improving silver halide microcrystal in the indirect absorptivity of its extrinsic spectral region.
By chemical sensitization processes such as sulphur sensitizing, golden sensitizing, sulfur plus gold sensitizing, the silver halide microcrystal surface can form certain size, the chemical sensitization spot of some, i.e. silver sulfide spot or silver sulfide gold spot.The main effect of sensitization spot is photoelectron or the photohole that produces in the silver halide microcrystal of capture light irradiation back and passes through series of physical chemical process formation latent image and time latent image.
If there is too much chemical sensitization spot on a silver halide microcrystal surface, electronics that crystallite is produced after illumination and hole just might be captured by these sensitization spots respectively, and a stable and formation that have an active latent image that develops needs a plurality of light induced electrons at least.Thereby the branch of sensitization spot breaking up causes single sensitization spot to capture photoelectronic probability reducing, and the probability that generates latent image diminishes and latent image is disperseed, and then causes light sensitivity and contrast to reduce.So that the sensitization spot is concentrated the light sensitivity and the contrast that can improve silver halide microcrystal emulsion relatively.United States Patent (USP) 5167875 has been introduced a kind of preparation method of silver sulfide colloidal sol, is used for the development layer of silver halide microcrystal emulsion sensitizing or silver salt diffusion transfer; United States Patent (USP) 5362470 has prepared a kind of ultra-fine silver, golden sulfide, is used for the sensitizing of silver halide microcrystal emulsion, compares with water miscible sulphur, the gold compound process for increasing sensitivity of routine, and the light sensitivity of emulsion increases, and photographic fog reduces; United States Patent (USP) 5759760 has been described the solids sensitizer of several water-dispersion types, and they are made up of water insoluble and gold compound, palladium compound, tellurium compound organic solvent respectively.
Mainly to be water miscible compound be adsorbed on the silver halide microcrystal surface with the form of molecule or ion to common chemical sensitization mode, and physics and the chemical change process by a series of complexity forms the chemical sensitization spot then.But because the activity site on silver halide microcrystal surface is a lot of and the absorption position of water miscible sensitizer compound on the silver halide microcrystal surface also relatively disperses, also relatively disperse in the sensitization spot position that particle surface generates like this, diminish and disperses thereby cause latent image to form probability, be difficult for the raising light sensitivity.
Summary of the invention
One of purpose of the present invention is to overcome common water miscible sensitizer compound to form many sensitization spots on the silver halide microcrystal surface easily, easily cause latent image to disperse, defectives such as light sensitivity is low provide a kind of novel nickel sulfide nano particle sensitizer that makes the sensitization spot form relatively and concentrate, distribute and be easy to control.
Two of purpose of the present invention provides a kind of preparation method of nickel sulfide nano particle sensitizer.
Three of purpose of the present invention provides a kind ofly utilizes nickel sulfide nano particle sensitizer of the present invention that silver halide microcrystal emulsion is carried out sensitizing and works in coordination with the method for sensitizing with golden salt pair silver halide microcrystal emulsion.
The present invention adopts the mineral compound nickel sulfide as chemical sensitizer first, and the state of this compound is water-insoluble nano size particles.The nickel sulfide particle that mainly consists of nano-scale of this sensitizer.Nickel sulfide nano particle at first attached to the silver halide microcrystal surface, partly or entirely changes into silver sulfide sensitization spot as sensitizer during sensitizing then in maturation.The silver sulfide sensitization spot that forms distributes than being easier to control like this, therefore can reduce latent image and disperse, and improves light sensitivity and contrast.
Nickel sulfide nano particle sensitizer of the present invention is made up of nickel sulfide nano particle, water miscible inorganics and water miscible macromolecular compound.Wherein, the concentration of nickel sulfide nano particle is the 0.00001-0.1 mol in the sensitizer, and water miscible mineral concentration is the 0.00002-0.2 mol, and the mass percent concentration of water miscible macromolecular compound is 0.001-10%.
Described water miscible macromolecular compound is gelatin, polyglycol, polyvinyl alcohol (PVA), POLYPROPYLENE GLYCOL, poly-methyl acrylate or starch etc.
Described water miscible inorganics is sodium sulphate, ammonium sulfate, sodium nitrate or ammonium nitrate etc.
The particle diameter of described nickel sulfide nano particle is in the 10-30 nanometer.
Nickel sulfide nano particle sensitizer of the present invention, mainly obtain by water miscible nickel salt and the reaction of water miscible sulfocompound, except generating nickel sulfide nano particle, other composition is decided on used water soluble compound kind, can generate water-soluble substanceses such as sodium sulphate, ammonium sulfate, sodium nitrate or ammonium nitrate respectively.
The preparation method of nickel sulfide nano particle sensitizer of the present invention: with water miscible nickel salt solution, with water miscible sulfocompound solution, in temperature is to be dispersed in the water miscible macromolecular compound under the 10-100 ℃ of condition, wherein, water miscible nickel salt: water miscible sulfocompound: the mass percent of water miscible macromolecular compound is 2: 1: 41-1: 1: 41, mix, obtain the nickel sulfide nano particle sensitizer of forming by nickel sulfide nano particle, water soluble inorganic substance and water soluble polymer then.Wherein, the concentration of the nickel sulfide nano particle in the sensitizer is the 0.00001-0.1 mol, and the concentration of water miscible inorganics is the 0.00002-0.1 mol, and the weight percent concentration of water miscible macromolecular compound is 0.1-10%.
The particle diameter of described nickel sulfide nano particle is in the 10-30 nanometer.
Described water miscible inorganics is sodium sulphate, ammonium sulfate, sodium nitrate or ammonium nitrate etc.
The described stirring reaction time is 1 minute-1 hour.
Described water miscible macromolecular compound is gelatin, polyglycol, polyvinyl alcohol (PVA), POLYPROPYLENE GLYCOL, poly-methyl acrylate or starch etc.Water soluble nickel salt is nickel nitrate or nickelous sulfate etc.; Water-soluble sulfocompound is sodium sulphide, ammonium sulfide, potassium sulfide, thioacetamide or sodium thiosulfate etc.
Sensitizer of the present invention is used as the sensitizer of silver halide microcrystal emulsion, or works in coordination with the sensitizing that is used as silver halide microcrystal emulsion with water-soluble golden salt solusion.Gold is 0.01-5 with the relative molar ratio of sulphur when working in coordination with sensitizing.Described water-soluble golden salt is the gold trichloride hydrochloride.Described water-soluble golden salt approximately uses 10 in silver emulsion
-8-10
-3Mole sensitizer/mole silver halide microcrystal emulsion.
Silver halide microcrystal emulsion of the present invention can prepare as follows: in a container of 50 liters that high-speed stirring apparatus is housed, add the 5-15 premium on currency in advance, 0.05-0.5 kilogram gelatin, be heated to 40-80 ℃, constant temperature stirs, and control pAg value is between the 5-10.5, in 40-180 minute, with the silver nitrate aqueous solution 0.5-3 liter of 1.0-3.0 mol and the kbr aqueous solution 0.5-3 liter of 1.0-3.0 mol, linear speed regulating adds the container reaction simultaneously.After reaction is finished, be cooled to 30-40 ℃, add the sedimentation of kayexalate aqueous solution, washing 3-4 all over after, add gelatin and water again, make glue silver than between the 0.5-3.0.The emulsion silver content is a 20-80 gram silver/kilogram emulsion.Regulate temperature then between 30-60 ℃, constant temperature stirred 20-40 minute, and the pAg that regulates emulsion regulates pH between 5.0-7.0 between 5.0-9.0.The preparation of silver halide microcrystal emulsion is finished.Resulting silver halide microcrystal size is between the 0.1-3.5 micron.
Chemical sensitization method among the present invention can be carried out as follows: equivalent takes by weighing two parts of prepared as stated above silver halide microcrystal emulsions, places the identical container of two volumes and makes it be fused into liquid state; Add the nickel sulfide nano particle sensitizer of preparation as stated above and pre-configured sodium thiosulfate sensitizer respectively in two containers, two kinds of sensitizers press the consumption that molal quantity calculates and are equated every mole of approximately use 10 of silver halide microcrystal emulsion
-6-10
-2The mole sensitizer; Also can work in coordination with sensitizing with nickel sulfide nano particle sensitizer and golden salt pair silver halide microcrystal emulsion.Under 40-70 ℃ water bath with thermostatic control, carried out chemical sensitization 10-200 minute, emulsion is coated on the resin sheet base, drying at room temperature, use special exposure instrument (5500K daylight) exposure then, in 20 ℃ D-19b developer solution, developed 5 minutes, with the photographic fixing of F-5 stop bath, carry out the photosensitive property test again after the washing and drying.
Sensitizer of the present invention can reduce latent image to be disperseed, and improves light sensitivity, intensifys, and reduces photographic fog.Sensitizer of the present invention can be applied to nearly all silver halide microcrystal emulsion, for example cubic silver halide crystallite emulsion, octahedra silver halide microcrystal emulsion, T particle silver halide microcrystal emulsion, nucleocapsid silver halide microcrystal emulsion, sandwich construction emulsion, hollow or how empty emulsion or non-galactic nucleus emulsion etc., also almost be applicable to all photographic silver halide kinds, as black and white film, color film, x-ray film, Aero-Space film, lithographic film, plate making, holofilm, printing paper etc.
Silver halide microcrystal emulsion of the present invention comprises silver chloride emulsion, silver bromide emulsion, silver iodide emulsion, silver bromide emulsion, chlorosulfonylation silver emulsion, chlorine silver bromide emulsion, silver chloroiodobromide emulsion etc.
The relevant photosensitive property result who draws from following concrete test as can be seen, under the sensitizer situation of equivalent, that adopts that the light sensitivity of nickel sulfide nano particle sensitizer sensitizing and contrast ratio adopt sodium thiosulfate sensitizer sensitizing wants high; The light sensitivity of the collaborative sensitizing of nickel sulfide nano particle sensitizer and gold trichloride and contrast are also than the height of sodium thiosulfate and the collaborative sensitizing of gold trichloride.
The invention will be further described below in conjunction with embodiment:
Embodiment
Embodiment 1
In 50 liters of containers that high-speed stirring apparatus is housed, add 10 premium on currency in advance, 0.2 kilogram gelatin, 0.0011 kilogram potassium bromide, be heated to 60 ℃, constant temperature stirs, and pAg is about 7.5 in control, in 300 minutes time, with the silver nitrate aqueous solution of 2 liter of 3.0 mol and the kbr aqueous solution linear speed regulating adding simultaneously container reaction of 2 liter of 3.0 mol.After reaction finishes, be cooled to 35 ℃, add 0.2 mass per liter percent concentration and be 5% kayexalate aqueous solution sedimentation, wash 3-4 time, add 0.6 kilogram of gelatin, adding water is 10 kilograms to the emulsion general assembly (TW), and the emulsion silver content is 0.065 kilogram of silver/kilogram emulsion.Then, about 50 ℃, constant temperature stirred 30 minutes, with the liquor argenti nitratis ophthalmicus of the potassium bromide solution of 1mol/L and 1mol/L the pAg of emulsion was adjusted to 7.3, was 10% the acetum pH regulator to 6.3 with emulsion with the sodium carbonate liquor of mass percent concentration 10% and mass percent concentration.Cooling is preserved standby in the refrigerator about 4 ℃.The preparation of cubic silver bromide crystallite emulsion is finished.
In the glass container of a 2.5L, add 0.5L distilled water, 10 gram gelatin make its dissolving under 50 ℃ of stirrings, add 0.29 gram Ni (NO again
3)
26H
2O makes its dissolving and stirs; In 0.5L distilled water, add 0.24 gram sodium sulfide crystal and make solution, and it is slowly added in the solution that above-mentioned water bath with thermostatic control high speed at 50 ℃ stirs, stirred again 5 minutes after adding.Be prepared into the nickel sulfide nano particle sensitizer.
Accurately take by weighing two parts of the emulsions of 1 kilogram of above-mentioned preparation, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 20mL of above-mentioned preparation, join in one of them container that fills this emulsion; Accurately measure the sodium thiosulfate 20mL of pre-configured 0.001mol/L, join in another container that fills this emulsion.Carried out chemical sensitization 30 minutes in 60 ℃ water bath with thermostatic control, and respectively emulsion was coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develops photographic fixing, drying, test again.The gained result as shown in Table 1.
Embodiment 2
In 30 liters of containers that high-speed stirring apparatus is housed, add 6 premium on currency in advance, 0.2 kilogram gelatin, 0.02 kilogram potassium bromide, be heated to 70 ℃, constant temperature stirs, and pAg is about 8.8 in control, within 100 minutes time, with the silver nitrate aqueous solution of 2 liter of 3.0 mol and the kbr aqueous solution linear speed regulating adding simultaneously container reaction of 2 liter of 3.0 mol.After reaction is finished, be cooled to 35 ℃, add 0.2 mass per liter percent concentration and be 5% kayexalate aqueous solution and carry out sedimentation, wash 3-4 time, add 0.8 kilogram of gelatin, adding water is 10 kilograms to the emulsion general assembly (TW), and the emulsion silver content is 0.065 kilogram of silver/kilogram emulsion.Then, about 40 ℃, constant temperature stirred 30 minutes, with the liquor argenti nitratis ophthalmicus of the potassium bromide solution of 1mol/L and 1mol/L the pAg of emulsion was adjusted to 8, was that 10% sodium carbonate liquor and mass percent concentration are the pH to 6.5 of 10% acetum adjusting emulsion with mass percent concentration.Preserve standby in the refrigerator after the cooling about 4 ℃.Octahedra silver bromide crystallite emulsion preparation is finished.
In the container of a 1L, add 0.2L distilled water, 4 gram gelatin and 1.74 gram nickel nitrate crystal, stir; Add 1.49 gram sodium thiosulfate again, heated and boiled also stirred 10 minutes, diluted 10 times then.Be prepared into the nickel sulfide nano particle sensitizer.
Accurately take by weighing two parts of the emulsions of 1 kilogram of above-mentioned preparation, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 10mL of above-mentioned preparation, join in one of them container that fills this emulsion; Accurately measure the sodium thiosulfate 10mL of pre-configured 0.003mol/L, join in another container that fills this emulsion.Carried out chemical sensitization 100 minutes in 50 ℃ water bath with thermostatic control, and respectively emulsion was coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develops photographic fixing, drying, test again.
Embodiment 3
In 30 liters of containers that high-speed stirring apparatus is housed, add 6 premium on currency in advance, 0.2 kilogram gelatin, 0.12 kilogram potassium bromide, be heated to 50 ℃, constant temperature stirs, and pAg is about 8.8 in control, within 50 minutes time, with the silver nitrate aqueous solution of 2 liter of 3.0 mol and the kbr aqueous solution linear speed regulating adding simultaneously container reaction of 2 liter of 3.0 mol.After reaction is finished, be cooled to 35 ℃, add 0.2 mass per liter percent concentration and be 5% kayexalate aqueous solution and carry out sedimentation, wash 3-4 time, add 0.8 kilogram of gelatin, adding water is 10 kilograms to the emulsion general assembly (TW), and the emulsion silver content is 0.064 kilogram of silver/kilogram emulsion.Then, about 40 ℃, constant temperature stirred 30 minutes, with the liquor argenti nitratis ophthalmicus of the potassium bromide solution of 1mol/L and 1mol/L the pAg of emulsion was adjusted to 8, was that 10% sodium carbonate liquor and mass percent concentration are the pH to 6.5 of 10% acetum adjusting emulsion with mass percent concentration.Cooling is preserved standby in the refrigerator about 4 ℃.The preparation of T particle silver bromide crystallite emulsion is finished.
In the glass container of a 2.5L, add 0.5L distilled water and 10 gram gelatin, under 50 ℃ of stirrings, make its dissolving, add 0.26 gram nickel sulfate hexahydrate crystal again and make its dissolving and stir; In 0.5L distilled water, add and make solution behind the 0.24 gram sodium sulfide crystal and it is slowly added in the solution that above-mentioned water bath with thermostatic control high speed at 50 ℃ stirs, stirred again 5 minutes after adding.Be prepared into the nickel sulfide nano particle sensitizer.
Accurately take by weighing two parts of the emulsions of 1 kilogram of above-mentioned preparation, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 10mL of above-mentioned preparation, join one of them fill this emulsion container in; Accurately measure the sodium thiosulfate 10mL of pre-configured 0.001mol/L, join in another container that fills this emulsion.Carried out chemical sensitization 60 minutes in 60 ℃ water bath with thermostatic control, and respectively emulsion was coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develops photographic fixing, drying, test again.
Embodiment 4
In 30 liters of containers that high-speed stirring apparatus is housed, add 6 premium on currency in advance, 0.2 kilogram gelatin, 0.045 kilogram potassium chloride, be heated to 50 ℃, constant temperature stirs, and pAg is about 7.9 in control, within 60 minutes time, with the silver nitrate aqueous solution of 2 liter of 2.0 mol and the potassium chloride solution linear speed regulating adding simultaneously container reaction of 2 liter of 2.0 mol.After reaction is finished, be cooled to 35 ℃, add 0.2 mass per liter percent concentration and be 5% kayexalate aqueous solution and carry out sedimentation, wash 3-4 time, add 0.4 kilogram of gelatin, adding water is 10 kilograms to the emulsion general assembly (TW), and the emulsion silver content is 0.043 kilogram of silver/kilogram emulsion.Then, about 40 ℃, constant temperature stirred 30 minutes, with the liquor argenti nitratis ophthalmicus of the potassium bromide solution of 1mol/L and 1mol/L the pAg of emulsion was adjusted to 7.0, was that 10% sodium carbonate liquor and mass percent concentration are the pH to 6.5 of 10% acetum adjusting emulsion with mass percent concentration.Cooling is preserved standby in the refrigerator about 4 ℃.The preparation of cube silver chloride crystallite emulsion is finished.
The nickel sulfide nano particle sensitizer is pressed the preparation method of embodiment 1.
Accurately take by weighing two parts of the cube silver chloride emulsions of 1 kilogram of above-mentioned preparation, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 20mL of above-mentioned preparation, join in one of them container that fills this emulsion; Accurately measure the sodium thiosulfate 20mL of pre-configured 0.001mol/L, join in another container that fills this emulsion. in 60 ℃ water bath with thermostatic control, carried out chemical sensitization 80 minutes, respectively emulsion is coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develop again, photographic fixing, drying, test.
Embodiment 5
The preparation method that embodiment 4 is pressed in the preparation of cube silver chloride crystallite emulsion.
The nickel sulfide nano particle sensitizer is pressed the preparation method of embodiment 3.
Accurately take by weighing 1 kilogram according to two parts of the cube silver chloride emulsions of the described experimental techniques preparation of embodiment 4, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 20mL of above-mentioned preparation, join one of them fill this emulsion container in; Accurately measure the sodium thiosulfate 20mL of pre-configured 0.001mol/L, join in another container that fills this emulsion.Carried out chemical sensitization 80 minutes in 60 ℃ water bath with thermostatic control, and respectively emulsion was coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develops photographic fixing, drying, test again.
Embodiment 6
The cubic silver bromide crystallite emulsion is pressed the method preparation of embodiment 1.
The nickel sulfide nano particle sensitizer is pressed the method preparation of embodiment 2.
Accurately take by weighing two parts of 1 kilogram of cubic silver bromide emulsions, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 20mL of above-mentioned preparation, join one of them fill this emulsion container in, and then measure 1 * 10
-4The gold trichloride hydrochloride solution 5mL of moL/L adds in this emulsion; Accurately measure the sodium thiosulfate 20mL of pre-configured 0.001mol/L, join in another container that fills this emulsion, and then measure 1 * 10
-4The gold trichloride hydrochloride solution 5mL of moL/L adds in this emulsion.Carried out chemical sensitization 80 minutes in 50 ℃ water bath with thermostatic control, and respectively emulsion was coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develops photographic fixing, drying, test again.The gained result as shown in Table 2.
Embodiment 7
In 30 liters of containers that high-speed stirring apparatus is housed, add 6 premium on currency in advance, 0.2 kilogram gelatin, 0.02 kilogram potassium bromide, be heated to 50 ℃, constant temperature stirs, and pAg is about 8.8 in control, within 60 minutes time, with silver nitrate aqueous solution and the kbr aqueous solution of 1.9 liter of 2.0 mol and the potassium iodide aqueous solution linear speed regulating adding simultaneously container reaction of 0.1 liter of 2.0 mol of 2 liter of 2.0 mol.After reaction is finished, be cooled to 35 ℃, add 0.2 mass per liter percent concentration and be 5% kayexalate aqueous solution and carry out sedimentation, wash 3-4 time, add 0.4 kilogram of gelatin, adding water is 10 kilograms to the emulsion general assembly (TW), and the emulsion silver content is 0.043 kilogram of silver/kilogram emulsion.Then, about 40 ℃, constant temperature stirred 30 minutes, with the liquor argenti nitratis ophthalmicus of the potassium bromide solution of 1mol/L and 1mol/L the pAg of emulsion was adjusted to 8.0, was that 10% sodium carbonate liquor and mass percent concentration are the pH to 6.5 of 10% acetum adjusting emulsion with mass percent concentration.Cooling is preserved standby in the refrigerator about 4 ℃.Octahedra bromo-iodide crystallite emulsion preparation is finished.
The nickel sulfide nano particle sensitizer is pressed the method preparation of embodiment 1.
Accurately take by weighing two parts of 1 kilogram of octahedra silver bromide emulsions, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 20mL of above-mentioned preparation, join in one of them container that fills this emulsion, and then measure 1 * 10
-4The gold trichloride hydrochloride solution 10mL of moL/L adds in this emulsion; Accurately measure the sodium thiosulfate 20mL of pre-configured 0.001mol/L, join in another container that fills this emulsion, and then measure 1 * 10
-4The gold trichloride hydrochloride solution 10mL of moL/L adds in this emulsion.Carried out chemical sensitization 100 minutes in 50 ℃ water bath with thermostatic control, and respectively emulsion was coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develops photographic fixing, drying, test again.
Embodiment 8
The preparation method that embodiment 1 is pressed in the preparation of cubic silver bromide crystallite emulsion.
The nickel sulfide nano particle sensitizer is pressed the preparation method of embodiment 1.
Accurately take by weighing two parts of 1 kilogram of cubic silver bromide emulsions, join in the container of two 1.5L respectively and make it be fused into liquid state; And accurately measure the nickel sulfide nano particle sensitizer 10mL of above-mentioned preparation, join one of them fill this emulsion container in, and then measure 1 * 10
-4The gold trichloride hydrochloride solution 10mL of moL/L adds in this emulsion; Accurately measure the sodium thiosulfate 10mL of pre-configured 0.001mol/L, join in another container that fills this emulsion, and then measure 1 * 10
-4The gold trichloride hydrochloride solution 10mL of moL/L adds in this emulsion.Carried out chemical sensitization 60 minutes in 60 ℃ water bath with thermostatic control, and respectively emulsion was coated on the polyester film base then, the silver coating amount is 0.012 Kilograms Per Square Meter, and drying at room temperature is exposed with special exposure instrument, develops photographic fixing, drying, test again.The gained result as shown in Table 3.
Table one. nickel sulfide nano particle sensitizer and sodium thiosulfate sensitizing result are relatively
Table two. nickel sulfide nano particle+gold trichloride and sodium thiosulfate+gold trichloride sensitizing result is relatively
Table three. nickel sulfide nano particle+gold trichloride and sodium thiosulfate+gold trichloride sensitizing result is relatively
| Sensitizer | Photographic fog | Relative sensitivity | Contrast |
| Sodium thiosulfate | ????0.18 | ????100 | ????4.3 |
| Nickel sulfide nano particle | ????0.21 | ????196 | ????5.6 |
| Sensitizer | Photographic fog | Relative sensitivity | Contrast |
| Sodium thiosulfate+gold trichloride hydrochloride | ??0.27 | ????100 | ??5.0 |
| Nickel sulfide nano particle+gold trichloride hydrochloride | ??0.26 | ????210 | ??6.5 |
| Sensitizer | Photographic fog | Light sensitivity | Contrast |
| Sodium thiosulfate+gold trichloride hydrochloride | ??2.87 | Meaningless | |
| Nickel sulfide nano particle+gold trichloride hydrochloride | ??0.40 | ????35 | ??4.6 |
Claims (11)
1. nickel sulfide nano particle sensitizer, it is characterized in that: this sensitizer is made up of nickel sulfide nano particle, water miscible inorganics and water miscible macromolecular compound; Wherein, the concentration of nickel sulfide nano particle is the 0.00001-0.1 mol in the sensitizer, and water miscible mineral concentration is the 0.00002-0.2 mol, and the mass percent concentration of water miscible macromolecular compound is 0.001-10%;
Described water miscible inorganics is sodium sulphate, ammonium sulfate, sodium nitrate or ammonium nitrate.
2. sensitizer as claimed in claim 1 is characterized in that: described water miscible macromolecular compound is gelatin, polyglycol, polyvinyl alcohol (PVA), POLYPROPYLENE GLYCOL, poly-methyl acrylate or starch.
3. sensitizer as claimed in claim 1 is characterized in that: the particle diameter of described nickel sulfide nano particle is in the 10-30 nanometer.
4. preparation method as any described nickel sulfide nano particle sensitizer of claim 1-3: it is characterized in that: with water miscible nickel salt solution, with water miscible sulfocompound solution, in temperature is to be dispersed in the water miscible macromolecular compound under the 10-100 ℃ of condition, wherein, water miscible nickel salt: water miscible sulfocompound: the mass percent of water miscible macromolecular compound is 2: 1: 41-1: 1: 41, mix, obtain by nickel sulfide nano particle, the nickel sulfide nano particle sensitizer that water soluble inorganic substance and water soluble polymer are formed;
Wherein, the concentration of the nickel sulfide nano particle in the sensitizer is the 0.00001-0.1 mol, and the concentration of water miscible inorganics is the 0.00002-0.1 mol, and the weight percent concentration of water miscible macromolecular compound is 0.1-10%.
5. method as claimed in claim 4 is characterized in that: the particle diameter of described nickel sulfide nano particle is in the 10-30 nanometer.
6. method as claimed in claim 4 is characterized in that: described water miscible inorganics is sodium sulphate, ammonium sulfate, sodium nitrate or ammonium nitrate.
7. method as claimed in claim 4 is characterized in that: described water miscible macromolecular compound is gelatin, polyglycol, polyvinyl alcohol (PVA), POLYPROPYLENE GLYCOL, poly-methyl acrylate or starch.
8. method as claimed in claim 4 is characterized in that: described water soluble nickel salt is nickel nitrate or nickelous sulfate.
9. method as claimed in claim 4 is characterized in that: described water-soluble sulfocompound is sodium sulphide, ammonium sulfide, potassium sulfide, thioacetamide or sodium thiosulfate.
10. purposes as any described nickel sulfide nano particle sensitizer of claim 1-3: it is characterized in that: this sensitizer is as the sensitizer of silver halide microcrystal emulsion, or with the collaborative sensitizing of water-soluble golden salt solusion as silver halide microcrystal emulsion.
11. purposes as claimed in claim 10 is characterized in that: described when collaborative sensitizing gold be 0.01-5 with the relative mol ratio of sulphur.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690657A (en) * | 2012-05-23 | 2012-09-26 | 南京工业大学 | Nickeliferous fluorescent quantum dot and preparation method and application thereof |
| CN103864157A (en) * | 2014-02-28 | 2014-06-18 | 金川集团股份有限公司 | Preparation method of amorphous nickel sulfide |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690657A (en) * | 2012-05-23 | 2012-09-26 | 南京工业大学 | Nickeliferous fluorescent quantum dot and preparation method and application thereof |
| CN102690657B (en) * | 2012-05-23 | 2014-02-26 | 南京工业大学 | Nickeliferous fluorescent quantum dot and preparation method and application thereof |
| CN103864157A (en) * | 2014-02-28 | 2014-06-18 | 金川集团股份有限公司 | Preparation method of amorphous nickel sulfide |
| CN103864157B (en) * | 2014-02-28 | 2016-06-08 | 金川集团股份有限公司 | A kind of preparation method of amorphous state nickel sulfide |
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