Background technology
Polishing powder from rare earth is with its polishing efficiency height, long service life, excellent properties such as applied widely, become current most popular precise polishing materials, be widely used in fields such as liquid crystal display, ITO conductive glass, HDTV (High-Definition Television) screen, CD, various prism and speculum, photographic camera and telescope lens, laser optics device, precison optical component.The technical indicator that influences polishing powder polishing efficiency and quality of finish is except that particle diameter and size-grade distribution, granule-morphology, and dispersing property and the suspending stabilized performance of polishing powder in liquid medium also is crucial influence factor.
Method at present commonly used is to add nano-calcium carbonate etc. as suspension stabilizer in polishing powder from rare earth; because nano-calcium carbonate is active high; in use easily assemble; produce the agglomerating particles of hard; reduced the polishing efficiency of polishing powder on the one hand; cause the polishing powder waste bigger, simultaneously, the hard granule also easily causes polishing back glass surface to scratch.On the other hand, glass surface after calcium ion in the nano-calcium carbonate and the polishing has bigger affinity, easily attached to glass surface, easy cleaning not, residual calcium ion also can produce adverse influence to polishing back the chemical enhanced of glass, occur small concavo-convexly as the surface, stress distribution is inhomogeneous etc.Therefore, develop a kind of Multifunction polishing powder from rare earth dispersion agent, overcome the deficiency of existing dispersion agent technology, to further raising polishing efficiency, to save rare earth resources significant.
Summary of the invention
Low at the prior art polishing efficiency, defectives such as waste rare earth resources, the invention provides a kind of novel multifunctional polishing powder from rare earth dispersion agent, it can not only have good dispersion and suspending stabilized effect to polishing powder from rare earth, and can overcome the gathering of nano-calcium carbonate and the deficiency of glass surface absorption after polishing, thereby reach the consumption that improves polishing efficiency, reduces polishing powder from rare earth, the purpose that improves polishing back product surface quality.
A kind of multifunctional rare-earth polishing powder dispersion agent of the present invention, the weight part of its component consists of:
Trisodium Citrate: 3 parts-15 parts; Water glass: 8 parts-35 parts;
Tripoly phosphate sodium STPP: 10 parts-40 parts; Sodium hexametaphosphate 99: 5 parts-25 parts;
Sodium oxalate: 1 part-8 parts; Polyoxyethylene glycol: 5 parts-15 parts;
Trolamine: 3 parts-12 parts; 1 part-5 parts of carboxymethyl celluloses.
The form of this multifunctional rare-earth polishing powder dispersion agent is solid powder or liquid solution.The composition of liquid solution also comprises the water of 150-400 weight part.
The preparation method of solid-state multifunctional rare-earth polishing powder dispersion agent is: after the accurate in proportion weighing of described raw material, mixed 1 hour-3 hours in grinding in ball grinder, obtain the powder mixture that color and luster is even, do not have reunion, the packages sealed of packing into bag gets product.
The preparation method of liquid multifunctional rare-earth polishing powder dispersion agent is: after the accurate in proportion weighing of described raw material, in reaction vessel, add deionized water, after being warming up to 60 ℃-65 ℃, the uniform mixing material that under whipped state, adds described raw material, continuation was reacted 1 hour-2 hours down at 60 ℃-65 ℃, cooling back via hole diameter is that 10 microns-50 microns porous ceramics filters, and makes massfraction and be 10%-30% solution, and can promptly gets liquid polishing powder from rare earth dispersion agent finished product.
The present invention compared with prior art has following function:
(1) polishing powder from rare earth is had good dispersion and stabilization, the qualification rate that can improve the polishing product is more than 10%;
(2) use this dispersion agent after, polishing efficiency improves, and can shorten polishing time 8%-15%, has the function of tangible volume increase, energy-conservation, consumption reduction;
(3) can reduce the reunion of polishing powder significantly, avoid the loss of the polishing powder from rare earth that causes because of reunion.After using this dispersion agent, can save polishing powder from rare earth more than 15%;
(4) reduced the absorption of polishing powder, helped polishing the cleaning of back product, had the function of easy cleaning and water saving at polished product surface.
Embodiment
Embodiment 1Solid-state multifunctional rare-earth polishing powder dispersion agent and application thereof:
Take by weighing following raw material by mass parts:
Trisodium Citrate: 5 parts; Water glass: 25 parts;
Tripoly phosphate sodium STPP: 30 parts; Sodium hexametaphosphate 99: 15 parts;
Sodium oxalate: 5 parts; Polyoxyethylene glycol: 10 parts;
Trolamine: 10 parts; 1 part of carboxymethyl cellulose.
After the accurate weighing of above-mentioned raw materials, mixed 2 hours in grinding in ball grinder, obtain color even, do not have the powder mixture of reuniting, the packages sealed of packing into bag promptly gets solid-state multifunctional rare-earth polishing powder dispersion agent.
From the packages sealed bag, take out 100 gram multifunctional rare-earth polishing powder dispersion agents during use, add and be equipped with in the container of 10 kg water, after stirring is fully dissolved it, again 5 kilograms of polishing powder from rare earth are progressively added, after stirring, adding water, to be modulated to the polishing powder from rare earth massfraction be 15% suspension, can use for polishing.
Embodiment 2Solid-state multifunctional rare-earth polishing powder dispersion agent and application thereof:
Take by weighing following raw material by mass parts:
Trisodium Citrate: 12 parts; Water glass: 14 parts;
Tripoly phosphate sodium STPP: 20 parts; Sodium hexametaphosphate 99: 20 parts;
Sodium oxalate: 8 parts; Polyoxyethylene glycol: 15 parts;
Trolamine: 3 parts; 5 parts of carboxymethyl celluloses.
After the accurate weighing of above-mentioned raw materials, mixed 2 hours in grinding in ball grinder, obtain color even, do not have the powder mixture of reuniting, the packages sealed of packing into bag promptly gets solid-state multifunctional rare-earth polishing powder dispersion agent.
From the packages sealed bag, take out 100 gram multifunctional rare-earth polishing powder dispersion agents during use, add and be equipped with in the container of 10 kg water, after stirring is fully dissolved it, again 5 kilograms of polishing powder from rare earth are progressively added, after stirring, adding water, to be modulated to the polishing powder from rare earth massfraction be 15% suspension, can use for polishing.
Embodiment 3The application of liquid multifunctional rare-earth polishing powder dispersion agent:
Take by weighing following raw material by mass parts:
Trisodium Citrate: 5 parts; Water glass: 20 parts;
Tripoly phosphate sodium STPP: 35 parts; Sodium hexametaphosphate 99: 12 parts;
Sodium oxalate: 4 parts; Polyoxyethylene glycol: 8 parts;
Trolamine: 6 parts; 2 parts of carboxymethyl celluloses.
In reaction vessel, add 8 kilograms of deionized waters, after being warming up to 60 ℃, in 2 kilograms in the uniform mixing material that stirs adding above-mentioned raw materials under the opened condition, continued stirring reaction 2 hours at 60 ℃ to 65 ℃, take out the cooling back, via hole diameter is that 10 microns to 50 microns porous ceramics filters, and makes mass fraction of solids and be 20% homogeneous solution, and can promptly gets liquid polishing powder from rare earth dispersion agent finished product.
Get 500 milliliters of liquid polishing powder from rare earth dispersion agents during use, add and be equipped with in the container of 10 kg water, again 5 kilograms of polishing powder from rare earth are progressively added, after stirring, adding water, to be modulated to the polishing powder from rare earth massfraction be 15% suspension, can use for polishing.
Embodiment 4The application of liquid multifunctional rare-earth polishing powder dispersion agent:
Take by weighing following raw material by mass parts:
Trisodium Citrate: 15 parts; Water glass: 15 parts;
Tripoly phosphate sodium STPP: 15 parts; Sodium hexametaphosphate 99: 25 parts;
Sodium oxalate: 8 parts; Polyoxyethylene glycol: 14 parts;
Trolamine: 10 parts; 2 parts of carboxymethyl celluloses.
In reaction vessel, add 8 kilograms of deionized waters, after being warming up to 60 ℃, in 2 kilograms in the uniform mixing material that stirs adding above-mentioned raw materials under the opened condition, continued stirring reaction 2 hours at 60 ℃ to 65 ℃, take out the cooling back, via hole diameter is that 10 microns to 50 microns porous ceramics filters, and makes mass fraction of solids and be 20% homogeneous solution, and can promptly gets liquid polishing powder from rare earth dispersion agent finished product.
Get 500 milliliters of liquid polishing powder from rare earth dispersion agents during use, add and be equipped with in the container of 10 kg water, again 5 kilograms of polishing powder from rare earth are progressively added, after stirring, adding water, to be modulated to the polishing powder from rare earth massfraction be 15% suspension, can use for polishing.