CN100490979C - Apparatus for grinding and dispersing organic dyestuff - Google Patents
Apparatus for grinding and dispersing organic dyestuff Download PDFInfo
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- CN100490979C CN100490979C CNB2006100662159A CN200610066215A CN100490979C CN 100490979 C CN100490979 C CN 100490979C CN B2006100662159 A CNB2006100662159 A CN B2006100662159A CN 200610066215 A CN200610066215 A CN 200610066215A CN 100490979 C CN100490979 C CN 100490979C
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Abstract
A grinding-dispersing apparatus of the organic pigment used for color filter of LCD is composed of a grinding cylinder with a constant temp in its internal cavity and vibrating longitudinally at a certain frequency, a rotary shaft inserted in said grinding cylinder, and several blade groups fixed sequentially to said rotary shaft and consisting of the perforated grinding blades arranged radially and uniformly. Said pigment is stirred, impacted and sheared.
Description
Technical field
The present invention relates to a kind of lapping device, particularly a kind of production LCD colored filter pigment photoresistor modulation apparatus for grinding and dispersing organic dyestuff.
Background technology
Usually, organic pigment particle diameter after initial synthesizing is thick, generally be distributed in the particle size distribution of 10～200 μ m broads, because the size of granules of pigments particle diameter directly influence performances such as its tinctorial strength, transparency, heat-resisting, fast light and anti-solvent, the pigment after therefore initially synthesizing can not directly be used for the conditioned pigment photoresistance and be used for the coating of LCD colored filter.Simultaneously, when grinding crude product pigment,, then the colored filter of modulation is in the future caused harmful effect with performances such as the quality stability of pigment photoresistor, viscosity, glossiness, transparencies if dispersing of pigments is insufficient.Therefore, apparatus for grinding and dispersing organic dyestuff has very important influence as the device that uses in grinding, the dispersion process to organic pigment size distribution and dispersion effect.
At present the dispersing and disintegrating of organic pigment is handled existing multiple dispersion grinding equipment, as ball mill, sand mill, three-roller, kneader or ultrasonic wave disintegrating apparatus etc., because colored filter requires granularity little with the finished product of organic pigment, and distribute and concentrate, the dust dispersion quality of above-mentioned existing equipment, efficient all can not satisfy production requirement.
Ball mill and sand mill are used for many years in printing ink, paint field, are particularly useful for disperseing low viscosity material (as solvent type ink).Ball mill is by means of the rolling generation bump of abrasive media and strong shearing force pigment particles to be disperseed, and have advantages such as cost is low, easy to operate, but it is not ideal enough for nano level organic pigment dispersion treatment, and efficient is low and equipment cleaning is difficult.
Three-roller also is a dispersing apparatus commonly used in the printing ink industry, relatively is applicable to the dispersion treatment of sticky material.Its operation principle is that paste is transferred to another roller with form of film from a roller, and two adjacent rollers are because the relative rotation speed difference, to pigment particles exert pressure, shearing force, thereby cause the aggregation fragmentation.This equipment is more suitable for requiring the bigger finished product pigment ratio of granularity, but does not reach granularity and the size distribution requirement of colored filter pigment photoresistor with pigment.
For the higher pigment of viscosity, more effective dispersing apparatus is a kneader, and pigment composition is subjected in the mixed process in kneader between two blades and mediates the shearing force effect between arm and the body wall and pulverize.But this equipment requires the viscosity height of material, otherwise can not reach normal dispersion effect, but the material of too high viscosity can not guarantee pigment and reach the particle size distribution requirement at short notice, if and must obtain size distribution when the pigment of 10～100nm scope, production cycle is long, and energy-output ratio is huge.
In addition, the rectilinear dispersing apparatus of prior art is that the material tube is vertically placed, when the mixture to organic pigment with viscosity higher carries out dispersion treatment, because the effect of gravity causes dispersion efficiency low, and easily produces so-called clogging.
Summary of the invention
The objective of the invention is deficiency at existing dispersing apparatus, provide a kind of at the apparatus for grinding and dispersing of colored filter pigment photoresistor with organic pigment, can obtain the finished product of size distribution in 10～100nm scope, have again and grind characteristics such as dispersion efficiency height, energy consumption are little, simple in structure, the organic pigment after the processing can be directly used in the modulation of colored filter with pigment photoresistor.
To achieve these goals, the invention provides a kind of apparatus for grinding and dispersing organic dyestuff, comprising:
One sand cylinder for the closed cylinder of inner chamber maintenance uniform temperature, is done axial vibration with certain frequency; One rotating shaft, an end inserts described sand cylinder, with certain rotating speed rotation;
Several vane group, be fixed in successively in the rotating shaft in the sand cylinder, each vane group has several along the circumferential uniform grinding blade of described rotating shaft, the surface of described grinding blade is provided with through hole, shape of through holes is rectangle, ellipse, triangle or circle on the described grinding blade, and described via area is for grinding 20%～40% of blade area.
The sandwich of the barrel of described sand cylinder for being made of inner and outer wall is filled with the cooling water that organic pigment in the sand cylinder is cooled off in the interlayer of inner and outer wall, described outer wall is provided with water inlet and delivery port.Described sand cylinder is connected with vibrating mechanism with oscillating plate by elastic mechanism, and is arranged in the supporting mechanism of a restriction sand cylinder direction of vibration and Oscillation Amplitude.The external diameter of described grinding blade is 65%～80% of a described sand cylinder internal diameter, and the width that grinds blade is 4.5%～9% of a described sand cylinder length, and the spacing of described vane group is 10%～20% of a described sand cylinder length.
Described grinding blade can be fixed in notch plate in the rotating shaft for an end, the cross sectional shape of notch plate is "＜" shape, " (" shape, " (" shape or other are shape roughly the same, and the knuckle of described "＜" shape, " angle of (" shape two ends tangent line, " angle of (" shape two ends hypotenuse extended line is 150 °～176 °; Described grinding blade also can have towards the blade inlet edge of its rotation direction bending for an end is fixed in flat board in the rotating shaft, and reverses 10～25 degree towards its rotation direction, and the torsional direction of adjacent grinding blade is opposite in the described same vane group.
In technique scheme, the vibration frequency of described sand cylinder is greater than 2500 times/minute, and vibration amplitude is 0.5%～2.5% of a described sand cylinder length, and the rotating speed of described rotating shaft is greater than 4000 rev/mins.
The present invention proposes a kind of apparatus for grinding and dispersing organic dyestuff, adopted and ground that blade rotates at a high speed, the combination technique scheme of sand cylinder dither.Grind blade organic pigment and the abrasive media in the impact grinding tube on the one hand, on the other hand organic pigment is sheared, and drive abrasive media and organic pigment is impacted and shear; Simultaneously sand cylinder is also done axial vibration with certain frequency, further organic pigment is fully ground and disperses.Grinding the rectangle, triangle, ellipse or the manhole that are provided with on the blade can cut down the consumption of energy on the one hand, can improve the vibration characteristics of grinding blade on the other hand, avoids organic pigment grinding adhering on the blade.Organic pigment is subjected to grinding stirring, shearing and the impact of blade, be subjected to the shearing and the impact of abrasive media again, also be subjected to the vibratory impulse of sand cylinder simultaneously, fined under the effect in above-mentioned various power, organic pigment particles drops in the close limit of 10～100nm, and size distribution stability is high, and it is required to satisfy LCD colored filter pigment photoresistor fully, the pigment photoresistor good fluidity, the strong coloring force that make.
At LCD colored filter pigment photoresistor required organic pigment particle size distribution and stability requirement, the present invention is provided with in optimal technical scheme and grinds on the blade via area for grinding 20%-40% of blade table area, form turbulent area near making through hole, make the organic pigment in the turbulent area be subjected to rotation and revolution effect, quicken the impact and the shearing of organic pigment, further improve dispersion efficiency.In further optimal technical scheme, the external diameter that grinds blade is 65%～80% of a sand cylinder internal diameter, and the width that grinds blade is 4.5%～9% of a sand cylinder length, and the spacing of vane group is 10%～20% of a sand cylinder length.
Grinding blade of the present invention can be that cross sectional shape is "＜" shape, " (" shape, " (" shape or other are the spill blade of shape roughly the same, and the concave surface of spill blade makes organic pigment form stable fluidised form at the blade rear portion towards the rotation direction of grinding blade; Grinding blade also can be the plate blade that has towards the blade inlet edge of its rotation direction bending, and the torsional direction of adjacent grinding blade is opposite, makes organic pigment accelerating impact under the driving of the twist blade of different torsional directions.In addition, the present invention both can be rectilinear structure, also can be horizontal configuration, all can reach efficiently to grind to disperse requirement, and simple in structure, reliable, efficient is high, energy consumption is low.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of apparatus for grinding and dispersing organic dyestuff of the present invention;
Fig. 2 a～Fig. 2 c grinds the structural representation of blade for spill of the present invention;
Fig. 3 a～Fig. 3 c grinds blade profile shape schematic diagram for spill of the present invention;
Fig. 4 a～Fig. 4 c grinds the structural representation of blade for plate shape of the present invention;
Fig. 5 is test result figure of the present invention;
Fig. 6 is test result figure of the present invention.
Description of reference numerals:
1-sand cylinder; 2-rotating shaft; 3-vane group;
4-water inlet; 5-delivery port; 6-charging aperture;
7-discharging opening; 8-discharging control valve; 9-vibrating mechanism;
10-elastic mechanism; 11-supporting mechanism; 12-oscillating plate;
31-grinding blade; 311-through hole; 312-blade inlet edge.
The specific embodiment
Fig. 1 is the structural representation of apparatus for grinding and dispersing organic dyestuff of the present invention, agent structure comprises sand cylinder 1, rotating shaft 2 and vane group 3, sand cylinder 1 is for having the closed cylinder that cooling structure makes its inner chamber keep uniform temperature and in axial direction does dither, one end of rotating shaft 2 inserts in sand cylinder 1 inner chamber, and affixed successively a plurality of vane group 3.Each vane group 3 has a plurality of along rotating shaft 2 circumferential uniform grinding blades 31, and each surface of grinding blade 31 is provided with through hole 311.In said structure, the spacing between the vane group 3 can be identical, also can be different, and grinding blade 31 quantity of each vane group 3 are determined according to material performance, can be 6～24.
The present invention adopts the mode of cooling water that the temperature in the organic pigment dispersion process is controlled.As shown in Figure 1, the sandwich of the barrel of sand cylinder 1 for constituting by inner and outer wall, charge into cooling water in the sandwich, cooling water forms cool cycles by water inlet 4, sand cylinder 1 barrel interlayer and delivery port 5, the temperature of organic pigment in the sand cylinder 1 is controlled in 20～30 ℃ of scopes, cause the physicochemical characteristic of organic pigment to change in order to prevent because temperature raises, increase it reaches finished product in process of lapping stability.Certainly, the cooling of sand cylinder 1 other modes that can also adopt those skilled in the art to habitually practise realize.
As shown in Figure 1, the axial vibration of sand cylinder 1 of the present invention is provided by vibrating mechanism 9 by elastic mechanism 10 and oscillating plate 12, and sand cylinder 1 and oscillating plate 12 are along the direction and the position up-down vibration of supporting mechanism 11 qualifications simultaneously.Particularly, supporting mechanism 11 is that a cross sectional shape is L shaped position limiting structure, side and sand cylinder 1 barrel and oscillating plate 12 contacts side surfaces, the direction of vibration of restriction sand cylinder 1 and oscillating plate 12, the bottom contacts the upper and lower position of constrained vibration plate 12 with oscillating plate 12 end faces.When vibrating mechanism 9 is arranged on sand cylinder 1 bottom, the bottom of bottom oscillating plate 12 is connected with vibrating mechanism 9, the upper surface connects elastic mechanism 10, elastic mechanism 10 is connected with the bottom of sand cylinder 1, vibrating mechanism 9 drives bottom oscillating plate 12 and moves up and down, make elastic mechanism 10 compressions, and then drive sand cylinder 1 up-down vibration.For guaranteeing the Oscillation Amplitude of sand cylinder 1, the top of sand cylinder 1 also can be provided with supporting mechanism 11, the upper end of sand cylinder 1 is connected with an end of elastic mechanism 10, elastic mechanism 10 other ends connect top oscillating plate 12, the vibration of sand cylinder 1 makes elastic mechanism 10 compressions, and then drive top oscillating plate 12 up-down vibration, by the upper and lower position of supporting mechanism 11 ends restrict upper and lower part oscillating plates 12; Be provided with the gap between the upper and lower end of sand cylinder 1 and the upper and lower part oscillating plate 12, the vibration surplus is provided.
Obviously, other modes that supporting mechanism 11 also can adopt those skilled in the art to habitually practise realize, vibrating mechanism 9 of the present invention also can be arranged on sand cylinder 1 top, can be motor, eccentric wheel structure, also can directly adopt vibrating motor, vibration frequency can be regulated continuously according to different scatter stages; Elastic mechanism 10 can be spring, elastomer block or flexure strip.Sand cylinder 1 of the present invention also comprises charging aperture 6, discharging opening 7 and discharging control valve 8, and sand cylinder 1 inner chamber keeps airtight when work, to the pressurization of sand cylinder 1 inner chamber, the organic pigment that grinds after disperseing is discharged when discharging control valve 8 is used for discharging.
Apparatus for grinding and dispersing organic dyestuff of the present invention is when grinding dispersion to organic pigment, rotating shaft 2 high speed rotating by drive power source, and then blade 31 rotation at a high speed in sand cylinder 1 is ground in drive, grind blade 31 stirs on the one hand, the impact grinding tube is interior organic pigment and abrasive media, on the other hand organic pigment is sheared, and driven abrasive media and organic pigment is impacted and shear.The through hole 311 that grinds setting on the blade 31 can reduce the energy consumption of operation on the one hand, can improve its vibration characteristics in rotation process on the other hand, can also avoid simultaneously organic pigment grinding adhering on the blade 31, the axial vibration that utilizes grinding blade 31 to produce increases the impulsive force to organic pigment, improves grinding efficiency.Sand cylinder 1 also with certain frequency along A to vibration, further organic pigment is fully ground and disperses.Organic pigment is subjected to grinding stirring, shearing and the impact of blade 31, be subjected to the shearing and the impact of abrasive media again, also be subjected to the vibratory impulse of sand cylinder 1 simultaneously, fined under the effect in above-mentioned various power, the granularity of organic pigment is dropped in the close limit of 10～100nm substantially, and size distribution stability is high, and it is required to satisfy LCD colored filter pigment photoresistor fully, the pigment photoresistor good fluidity, the strong coloring force that make.
Granularity and distribution requirement at the required organic pigment of LCD colored filter pigment photoresistor, the spacing that the present invention is provided with vane group 3 is 10%～20% of a sand cylinder length, be in the sand cylinder 1 5～10 groups of vane group 3 to be set, the width that grinds blade 31 is 4.5%～9% of a sand cylinder length, and the grinding vane thickness is 1～3mm.In this parameter area, organic pigment in the adjacent blades group space trends towards a kind of eddy motion state, under this eddy motion state, the rotational velocity of organic pigment particles is accelerated, increased by bump on the one hand, sheared probability, improve grinding efficiency, reduced the polymerization tendency of organic pigment on the other hand to a certain extent, improved dispersion efficiency.When sand cylinder 1 was vertically placement, this spacing range can also be eliminated the influence that organic pigment is subjected to gravity to greatest extent, stoped the whereabouts trend of organic pigment, therefore can pulverize and disperse organic pigment fully.When grinding blade 31 high-speed stirred organic pigments and abrasive media, abrasive media has higher kinetic energy, the trend of therefore oriented always sand cylinder 1 inwall motion.The present invention is set to 65%～80% of sand cylinder 1 internal diameter by the external diameter that grinds blade 31, has controlled the motion of abrasive media well, and the driving that makes large-scale abrasive media always be ground blade 31 is effectively impacted and sheared organic pigment.Said structure design has improved quality and the effect that the present invention grinds dispersion to greatest extent, make the present invention can obtain the organic pigment of size distribution in the close limit of 10～100nm, and size distribution stability is high.
In technique scheme of the present invention, the vibration frequency of sand cylinder 1 is greater than 2500 times/minute, vibration amplitude is 0.5%～2.5% of a sand cylinder length, the rotating speed of rotating shaft 2 is greater than 4000 rev/mins, organic pigment obtains to disperse fully and grind under the comprehensive function under high speed rotating and the dither, has higher dispersion and grinding efficiency.Wear-resistant ceramic or corundum structure are all adopted in the position that sand cylinder 1, rotating shaft 2 and grinding blade 31 contact with organic pigment, prevent that metal peeling from influencing the performance of final products.
On the technique scheme basis, the present invention has also carried out optimal design at grinding blade, gives full play to the comprehensive effectiveness of technical solution of the present invention, is specified below.
First kind of embodiment that the present invention grinds blade adopts spill to grind blade construction, and Fig. 2 a～Fig. 2 c grinds the structural representation of blade for spill of the present invention.Grinding blade 31 overall structures is a notch plate, and shape can be rectangle, parallelogram, oblong or other analogous shapes, and minor face one end is fixed in the rotating shaft 2.Fig. 2 a～Fig. 2 c has only illustrated rectangular paddle, its cross sectional shape is specially flanged plate "＜" shape (shown in Fig. 2 a), " " (" shape (shown in Fig. 2 c), its concave surface is towards the rotation direction of grinding blade 31 for (" shape (shown in Fig. 2 b) or multifolded plate for arc.The above-mentioned cross sectional shape design of grinding blade 31 has improved its efficient that stirs, impacts organic pigment on the one hand, having eliminated prior art on the other hand grinds and promotes organic pigment in the blade rotation and only the technological deficiency of piling up and stopping up may occur towards direction motion, an organic pigment, make the organic pigment in the sand cylinder 1 of the present invention present even distribution, improve grinding, dispersion efficiency.
Fig. 3 a～Fig. 3 c grinds blade profile shape schematic diagram for spill of the present invention.Consider that organic pigment flows through the flow behavior of grinding blade 31, present embodiment designs the concave surface characteristic of notch plate.At flanged plate "＜" shape, the knuckle α of its two flanging is 150 °～176 ° (shown in Fig. 3 a); At arc " (" shape, the angle α of its two ends tangent line is 150 °～176 ° (shown in Fig. 3 b); " (" shape, the angle α of its two ends hypotenuse extended line is 150 °～176 ° (shown in Fig. 2 c) at multifolded plate.The above-mentioned optimal design of present embodiment makes the organic pigment that flows through grinding blade 31 can form stable fluidised form at the blade rear portion, as angle α too conference form low-pressure area at the blade rear portion, be unfavorable for the mutual collision of organic pigment, angle α too young pathbreaker causes the damp impacts of blade to organic pigment, all can reduce the grinding dispersion efficiency.The preferred angle α of the present invention value is 160 °～170 °, can also improve spill and grind the overall efficiency that the vane drive abrasive media impacts and shears organic pigment.
Shown in Fig. 2 a～Fig. 2 c, the through hole 311 that present embodiment grinds on the blade 31 can be rectangle (shown in Fig. 2 a), oval (shown in Fig. 2 b), triangle or circle (shown in Fig. 2 c), through hole 311 quantity can be 1～20, and preferred shape of through holes is oval.Through hole 311 is for radially being provided with, and promptly its major axis or long limit are vertical with the rotation direction of grinding blade 31.When abrasive media and organic pigment during by through hole 311, the long edge that can be beneficial to through hole 311 produces further organic pigment to be sheared, and improves grinding, dispersion efficiency.Present embodiment passes through theory, the experimental analysis to the kinetic characteristic of vibration characteristics of grinding blade 31 and organic pigment, has proposed preferred through hole 311 parameters, and promptly the gross area of through hole 311 is for grinding 20%～40% of blade area.In the time of in through hole 311 is arranged on the above-mentioned parameter scope, can form turbulent area near the through hole 311, make the motion with the blade rotation of the existing macroscopic view of organic pigment particles in the turbulent area, the rambling motion that has microcosmic again, improved the probability that particle clashes into mutually, further improved and grind dispersion efficiency.
The present invention grinds second kind of embodiment employing of blade and is with the plate shape of reversing to grind blade construction, and Fig. 4 a～Fig. 4 c grinds the structural representation of blade for plate shape of the present invention.Grinding blade 31 overall structures is a flat board, and shape can be nearly rectangle, closely trapezoidal, near ellipse or other similar blade shapes, and minor face one end is fixed in the rotating shaft 2.Fig. 4 a～Fig. 4 c has only illustrated nearly trapezoidal shape, has towards the crooked blade inlet edge 312 of its rotation direction (B to), and reverses 10～25 degree towards its rotation direction.This reverses can be that blade integral reverses, and also can be to strengthen torsion angle from root of blade gradually to blade tip.As the present embodiment optimized technical scheme, the torsional direction that grinding blade 31 can be designed to adjacent grinding blade 31 further is opposite.This preferred structure design of grinding blade 31 has improved its stirring efficiency and shear efficiency on the one hand, and improved and ground the usefulness that blade 31 driving abrasive medias impact and shear organic pigment, another reverse side, having eliminated prior art by the opposite torsional direction of adjacent blades grinds and to promote organic pigment in the blade rotation only towards a direction motion, the technological deficiency of piling up and stopping up may appear in organic pigment, make the organic pigment in the sand cylinder 1 of the present invention present even distribution, also make organic pigment accelerating impact under the driving of the twist blade of different torsional directions simultaneously, improved the usefulness that organic pigment is impacted and shears.
Shown in Fig. 4 a～Fig. 4 c, the through hole 311 that present embodiment grinds on the blade 31 can be rectangle (shown in Fig. 4 a), oval (shown in Fig. 4 b), triangle or circle (shown in Fig. 4 c), through hole 311 quantity can be 1～20, and preferred shape of through holes is oval.About relevant parameter design, effect and effect and first embodiment of through hole 311 are close substantially, repeat no more.
The present invention has carried out the grinding distributed test of different designs parameter, and material is the mixed liquor of DPP red pigment 40g, hyper-dispersant 23g, solvent 400g, resin 26g, and the sand cylinder related parameter values is:
Sand cylinder internal diameter: 300 millimeters;
Sand cylinder inner chamber height: 108 millimeters;
Rotating shaft external diameter: 40 millimeters;
Grind the blade external diameter: 240 millimeters;
Grind vane thickness: 1.5 millimeters;
Sand cylinder vibration frequency: 2900 times/minute;
Sand cylinder vibration amplitude: 1.6 millimeters;
Rotating shaft rotating speed: 4500 rev/mins.
Test one: the vane group spacing is 12 millimeters, the grinding blade is a spill, width is 7 millimeters, grinding blade knuckle α is 160 degree, totally 2 of rectangular through-hole, each long 50 millimeters, wide 1.5 millimeters, grind and adopt the nano particles instrument that pigment size distribution situation is tested after 1.5 hours, particle mean value is 86.4nm.
Test two: the fan disk spacing is 15 millimeters, the grinding blade is a spill, width is 7 millimeters, grinding blade knuckle α is 166 degree, totally 4 of ellipse holes, grind and adopt the nano particles instrument that pigment size distribution situation is tested after 1.5 hours by each long 30 millimeters, wide 2.2 millimeters, particle mean value is 78.6nm, as shown in Figure 5.
Test three: the fan disk spacing is 18 millimeters, the grinding blade is a spill, width is 7 millimeters, grinding blade knuckle α is 170 degree, totally 20 of manholes, 2.1 millimeters of each radiuses grind and adopt the nano particles instrument that pigment size distribution situation is tested after 1.5 hours, and particle mean value is 83.2nm.
Test four: the fan disk spacing is 12 millimeters, grinding blade is plate shape, torsion angle 15 degree, the torsional direction that grinds blade is identical, a rectangular through-hole area is for grinding 20% of blade effective area, grind and adopt the nano particles instrument that pigment size distribution situation is tested after 1.5 hours, particle mean value is 89.3nm.
Test five: the fan disk spacing is 15 millimeters, grinding blade is plate shape, torsion angle 20 degree, the torsional direction of adjacent grinding blade is opposite, an ellipse hole area is for grinding 24.7% of blade effective area, grind and adopt the nano particles instrument that pigment size distribution situation is tested after 1.5 hours, particle mean value is 81.2nm, as shown in Figure 6.
Test six: the fan disk spacing is 18 millimeters, grinding blade is plate shape, torsion angle 25 degree, the torsional direction of adjacent grinding blade is opposite, a plurality of manhole areas are for grinding 28.4% of blade effective area, grind and adopt the nano particles instrument that pigment size distribution situation is tested after 1.5 hours, particle mean value is 85.2nm.
Fig. 5, Fig. 6 are respectively the test result figure of test two, test five.From Fig. 5, test result shown in Figure 6 as can be seen, the grinding effect of ellipse hole is better than rectangle and manhole, particle mean value was lower when via area was 25～30% left and right sides of grinding the blade effective area, but the Granularity Distribution of organic pigment is all in 10～100nm scope, satisfy the performance requirement of colored filter pigment photoresistor fully with pigment, and milling time is short, the efficient height.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (9)
1. an apparatus for grinding and dispersing organic dyestuff is characterized in that, comprising:
One sand cylinder for the closed cylinder of inner chamber maintenance uniform temperature, is done axial vibration with certain frequency; One rotating shaft, an end inserts described sand cylinder, with certain rotating speed rotation;
Several vane group, be fixed in successively in the rotating shaft in the sand cylinder, each vane group has several along the circumferential uniform grinding blade of described rotating shaft, the surface of described grinding blade is provided with through hole, shape of through holes is rectangle, ellipse, triangle or circle on the described grinding blade, and described via area is for grinding 20%～40% of blade area.
2. apparatus for grinding and dispersing organic dyestuff as claimed in claim 1, it is characterized in that, the sandwich of the barrel of described sand cylinder for constituting by inner and outer wall, be filled with the cooling water that organic pigment in the sand cylinder is cooled off in the interlayer of inner and outer wall, described outer wall is provided with water inlet and delivery port.
3. apparatus for grinding and dispersing organic dyestuff as claimed in claim 1 is characterized in that, described sand cylinder is connected with vibrating mechanism with oscillating plate by elastic mechanism, and is arranged in the supporting mechanism of a restriction sand cylinder direction of vibration and Oscillation Amplitude.
4. apparatus for grinding and dispersing organic dyestuff as claimed in claim 1, it is characterized in that, the external diameter of described grinding blade is 65%～80% of a described sand cylinder internal diameter, the width that grinds blade is 4.5%～9% of a described sand cylinder length, and the spacing of described vane group is 10%～20% of a described sand cylinder length.
5. apparatus for grinding and dispersing organic dyestuff as claimed in claim 1 is characterized in that, described grinding blade is that an end is fixed in the notch plate in the rotating shaft, and its cross sectional shape is "＜" shape, " (" shape or " (" shape.
6. apparatus for grinding and dispersing organic dyestuff as claimed in claim 5 is characterized in that, the knuckle of described "＜" shape, described " angle of (" shape two ends tangent line, described " angle of (" shape two ends hypotenuse extended line is 150 °～176 °.
7. apparatus for grinding and dispersing organic dyestuff as claimed in claim 1 is characterized in that, described grinding blade is that an end is fixed in the flat board in the rotating shaft, has towards the blade inlet edge of its rotation direction bending, and reverses 10～25 degree towards its rotation direction.
8. apparatus for grinding and dispersing organic dyestuff as claimed in claim 7 is characterized in that, the torsional direction of adjacent grinding blade is opposite in the described same vane group.
9. as the arbitrary described apparatus for grinding and dispersing organic dyestuff of claim 1～4, it is characterized in that, the vibration frequency of described sand cylinder is greater than 2500 times/minute, and vibration amplitude is 0.5%～2.5% of a described sand cylinder length, and the rotating speed of described rotating shaft is greater than 4000 rev/mins.
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| 颜料分散设备进展（II）. 沈锦周.现代涂料与涂装，第4期. 1998 |
| 颜料分散设备进展（II）. 沈锦周.现代涂料与涂装，第4期. 1998 * |
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| CN101045215A (en) | 2007-10-03 |
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