CN101497132A - Metal powder non-water-based curtain coating slurry and preparation method thereof - Google Patents
Metal powder non-water-based curtain coating slurry and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a non-water based pulp for tape casting and a preparing method thereof. The metal powder non-water based pulp for tape casting is characterized in that the metal powder non-water based pulp for tape casting is prepared from raw materials such as metal powder, a dispersant Hypermer KD-1, polyvinyl-butyral, a plasticizer and a solvent; and the raw materials in percentage by mass are 40 to 75 percent of the metal powder, 0.4 to 2 percent of the dispersant HYPERMER KD-1, 1 to 4 percent of the polyvinyl-butyral, 1 to 5 percent of the plasticizer and 14 to 57.5 percent of the solvent, wherein the plasticizer is one of the following two: (1) polymethylmethacrylate, and (2) a mixture of polyethylene glycol and glycerin, and the mass ratio of the polyethylene glycol to the glycerin is 1:1; and the solvent is one of the following two: (1) butanone, and (2) a mixture of absolute ethyl alcohol and the butanone, and the mass ratio of the absolute ethyl alcohol to the butanone is 3 :1 to 1:1. The method has simple process and low cost, and the prepared pulp has the characteristics of low viscosity, good dispersibility and good stability.
Description
Technical field
The present invention relates to a kind of non-water-based curtain coating slurry and preparation method thereof, particularly relate to metal powder non-water-based curtain coating slurry and preparation method thereof.
Background technology
The tape casting (also claiming to draw together the cutter method of forming) is a kind of ancient forming method, is used for papermaking, plastics and paint industry the earliest.The preparation that is used for ceramic material starts from during the Second World War, is at that time to prepare dielectric substance in this way to replace the capacitor that mica makes function admirable, has promoted development of electronic technology.In recent decades, the application study of The tape casting forming technique has obtained remarkable progress.As a kind of important forming method, it is widely used in many fields such as electronics industry, the energy, as uses Al
2O
3Make the ic substrate and the gasket material of all thickness, use BaTiO
3Make capacitor dielectric material, use ZrO
2Make solid electrolyte fuel cell, oxygen pump and lambda sensor or the like.It is a kind of present comparative maturity can obtain high-quality, the forming method of ultrathin ceramics has been widely used in the monolithic capacitor ceramics, the production of advanced ceramics such as thick film and thin film circuit substrate.The substrate of the most suitable a large amount of production 0.4～1.0mm of The tape casting has the production efficiency height, good product consistency, and the advantage of stable performance, states such as Japan and the United States, moral are widespread usage.Flow casting molding had before studies show that particularly also by in the preparation of wide variety of functions functionally gradient material (FGM) that flow casting molding was a kind of effective ways that prepare the FGM in the accurate constant entropy light-gas gun experiment in addition.
Flow casting molding: need in ceramic powder, add organic principles such as solvent, dispersant, binding agent and plasticizer usually and make finely dispersed stable slip, make certain thickness plain embryophoric membrane on casting machine, plain embryophoric membrane makes the product that burn till that meet desirable characteristics by dry, sintering.The technical process of flow casting molding machine: finely divided ceramic powder is suspended in the non-group water solution of being made up of solvent, plasticizer, adhesive and suspending agent or group water solution, becomes slip plastic and that can flow.Slip flows through under scraper, just on the conveyer belt of casting machine, form the casting films of thin layer, treat that solvent volatilizees gradually after, form the comparatively fine and close casting films that has certain toughness and intensity and can carry out cutting, like the base band of leather sample softness, stamp out the base substrate of definite shape again.The flow casting molding main characteristics: flow casting molding equipment is not too complicated, and process stabilizing, but continued operation, the production efficiency height, the automatization level height, base film properties uniformity and be easy to control, be a process cheaply simultaneously, can be used to prepare the thin plate of lamellar compound.But the blank of flow casting molding is because of solvent and adhesive equal size height, so blank density is little, and percent of firing shrinkage is sometimes up to 20～21%.The flow casting molding base substrate for preparing, preparation good dispersion, more stable non-water-based curtain coating slurry that viscosity is low are most important.
From present document both domestic and external, considerably less at the research data and the data of the non-water-based curtain coating slurry of metal powder, especially the preparation of metal powder slip still belongs to blank at home.Because the common granularity of metal powder is bigger, and metal that has such as magnesium powder are easy to react with water, the slip that particularly prepares the different metal powder mixture of surface nature, therefore increased difficulty with regard to the raising that makes this curtain coating slurry solid concentration like this, selected organic additive such as suitable solvent, dispersant, binding agent, plasticizer and regulated suitable proportioning most important.
Summary of the invention
The object of the present invention is to provide a kind of metal powder non-water-based curtain coating slurry and preparation method thereof, this method technology is simple, cost is low, and prepared pulp has the higher characteristics of solid concentration.
To achieve these goals, technical scheme of the present invention is: metal powder non-water-based curtain coating slurry is characterized in that it forms by comprising metal powder, dispersant Hypermer KD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent feedstock production; The shared mass percent of each raw material is: metal powder 40～75%, dispersant Hypermer KD-10.4～2%, polyvinyl butyral resin 1～4%, plasticizer 1～5%, solvent 14～57.5%;
Wherein, plasticizer be following the two one of: 1. polymethyl methacrylate (PMMA), the 2. mixture of polyethylene glycol (PEG) and glycerine, the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent be following the two one of: 1. butanone, the 2. mixture of absolute ethyl alcohol and butanone, the quality proportioning between absolute ethyl alcohol and the butanone is 3:1～1:1.Solid concentration is 40～75wt%.
Described metal powder is the mixing of any one or two kinds in magnesium powder, the copper powder, is any proportioning during two kinds mixing; The particle diameter of metal powder≤300 orders.
The preparation method of above-mentioned metal powder non-water-based curtain coating slurry is characterized in that it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 40～75%, dispersant Hypermer KD-10.4～2%, polyvinyl butyral resin 1～4%, plasticizer 1～5%, solvent 14～57.5%; Choose metal powder, dispersant HYPERMERKD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent raw material;
Wherein, plasticizer be following the two one of: 1. polymethyl methacrylate (PMMA), the 2. mixture of polyethylene glycol (PEG) and glycerine, the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent be following the two one of: 1. butanone, the 2. mixture of absolute ethyl alcohol and butanone, the quality proportioning between absolute ethyl alcohol and the butanone is 3:1～1:1;
2) mix: solvent and dispersant Hypermer KD-1 are mixed (dissolving dispersant), add metal powder then, mix, get mixed slurry A;
3) ball milling for the first time: A puts into nylon ball grinder with the gained mixed slurry, is ball-milling medium (being silicon nitride ball) with the silicon nitride, carries out ball milling on ball mill, ratio of grinding media to material is 1:1, the ball milling time is 6～48 hours, and rotating speed is 180～250 rev/mins, obtains metal powder suspension B;
4) ball milling for the second time: in metal powder suspension B, add the polyvinyl butyral resin of polyvinyl butyral resin total amount 1/3～2/3, in metal powder suspension B, add the plasticizer of plasticizer total amount 1/3～2/3; Carrying out secondary ball milling then on ball mill, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 6～48 hours, and rotating speed is 180～250 rev/mins, obtains metal powder suspension C;
5) ball milling for the third time: in metal powder suspension C, add remaining polyvinyl butyral resin and remaining plasticizer; Carrying out three times ball milling then on ball mill, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 6～48 hours, and rotating speed is 180～250 rev/mins, gets mixed slurry D;
6) post processing: after the mixed slurry D degasification behind the ball milling for the third time, the filtration, promptly obtain metal powder non-water-based curtain coating slurry.
Dispersant Hypermer KD-1 is an existing product, the commodity place of production: Britain's standing grain is big, be the conducting powder dispersant special, concrete product information is as follows: outward appearance is a faint yellow solid, and the pH value is 8～9, proportion is 1.11 (10% aqueous solution), fusing point is 47 ℃, acid number 19～31mgKOH/g, alkali equivalent 1100～1600, dissolubility---water insoluble, be dissolved in aromatic series halogen-containing ketone the ester class the higher alcohols solvent.
Mechanism of the present invention is: the surface that utilizes dispersant Hypermer KD-1 to be adsorbed on powder produces that fixed point is repelled and sterically hinderedly is used for realizing the fine dispersion of metal-powder in organic solvent; By adding polyvinyl butyral resin as binding agent, parcel powder particle self solidify to form the surface and produces three-dimensional interconnective strong branch framework, gives casting films certain intensity and toughness; By adding polyethylene glycol (PEG) or PMMA and glycerine as plasticizer, can reduce plastic limit temperature T g, increase the mobility of macromolecular chain, thereby the pliability of casting films is increased, but can reduce casting films intensity simultaneously, so select plasticizer will in order to be effective, reduce its content as far as possible; Further disperse slip by ball milling, select suitable ball milling speed, when speed is too low, powder and organic additive mix inhomogeneous, when the dispersion effect that does not reach, speed are big, thereby slip is reunited owing to can produce higher energy during the metal powder ball milling.The metal powder non-water-based curtain coating slurry that finally obtain to have solid concentration height, dispersiveness and good stability, viscosity is low.
The invention has the beneficial effects as follows:
1) preparation technology is simple, and cost is low, and cycle period is short.
2) Zhi Bei metal powder non-water-based curtain coating slurry has solid concentration higher (characteristics such as solid concentration is 40～75wt%), viscosity is low, dispersiveness and good stability is suitable for flow casting molding.
3) prepared pulp good film-forming property: with the casting films surfacing of this metal powder non-water-based curtain coating slurry preparation, powder granule and even air hole distribution, intensity height, machinability is good.
Description of drawings
Fig. 1 is preparation technology's flow chart of the present invention.
Fig. 2 is that pure butanone is that the solid concentration of solvent is that (embodiment 1 for the pure magnesium slip of 45wt%, a longest line of below among Fig. 2), (embodiment 2 for the fine copper slip of 70wt%, one of the top long line among Fig. 2), the rheological curve figure of the magnesium copper slip of 55wt% (embodiment 3, a long line of centre among Fig. 2).Adopt viscosimeter to measure dispersiveness and the viscosity of viscosity, adopt the stability to the situation that the influences explanation slip of viscosity in the same following time of rotating speed along with rotation speed change trend explanation slip.It is very little that Fig. 2 illustrates that the viscosity of slip changes, and the good dispersion of slip is described.
Fig. 3 is that absolute ethyl alcohol is the influence of different Hypermer KD-1 dispersants (the embodiment 4-embodiment 7) content of solvent to magnesium copper mixed slurry rheological property with the butanone mixture.The viscosity variation tendency of Fig. 3 is shear shinning, and the slip good dispersion is described.
To be the time characterize slurry stability to the influence of magnesium copper mixed slurry to Fig. 4.Fig. 4 viscosity amplitude of variation of slip in the regular hour is very little, and the good stability of slip is described.
Fig. 5 is the SEM figure of the film of flow casting molding gained.Fig. 5 has illustrated that the performance of prepared pulp is suitable for well also can preparing the good casting films of performance.
The specific embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1: as shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, the solid concentration in the design slip is 45wt%, it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 45%, dispersant Hypermer KD-1 1%, polyvinyl butyral resin 3%, plasticizer 1.60%, solvent 49.4%; Choose metal powder, dispersant Hypermer KD-1 (big, below identical), polyvinyl butyral resin (binding agent), plasticizer and solvent raw material available from Britain's standing grain;
Described metal powder is the magnesium powder, and particle diameter is 300 orders; Plasticizer is polyethylene glycol and glycerine, and the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent is a butanone;
2) mix: solvent and dispersant Hypermer KD1 are mixed (dissolving dispersant), add metal powder then, mix, get mixed slurry A;
3) ball milling for the first time: A puts into nylon ball grinder with the gained mixed slurry, is ball-milling medium (silicon nitride ball) with the silicon nitride, carries out ball milling on ball mill, and ratio of grinding media to material is 1:1, and the ball milling time is 22 hours, and rotating speed is 220 rev/mins, obtains metal powder suspension B;
4) ball milling for the second time: in metal powder suspension B, add the polyvinyl butyral resin of polyvinyl butyral resin total amount 1/2, in metal powder suspension B, add the plasticizer of plasticizer total amount 1/2; Carrying out secondary ball milling then on ball mill, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 22 hours, and rotating speed is 220 rev/mins, obtains metal powder suspension C;
5) ball milling for the third time: in metal powder suspension C, add remaining polyvinyl butyral resin and remaining plasticizer; Carrying out ball milling then on ball mill three times times, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 22 hours, and rotating speed is 220 rev/mins, gets mixed slurry D;
6) post processing: after the mixed slurry D degasification (using small-sized deaeration machine to carry out vacuum filtration) behind the ball milling for the third time, the filtration, promptly obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 2.
Embodiment 2:
As shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, the solid concentration in the design slip is 70wt%, it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 70%, dispersant Hypermer KD-1 1%, polyvinyl butyral resin 3%, plasticizer 1.60%, solvent 24.4%; Choose metal powder, dispersant Hypermer KD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent raw material;
Described metal powder is a copper powder, and particle diameter is 300 orders; Plasticizer is polyethylene glycol and glycerine, and the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent is a butanone;
Other step [step 2)-6)] with embodiment 1; Obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 2.
Embodiment 3:
As shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 55%, dispersant Hypermer KD-1 1%, polyvinyl butyral resin 3%, plasticizer 1.6%, solvent 39.4%; Choose metal powder, dispersant Hypermer KD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent raw material;
Described metal powder is magnesium powder and copper powder, and the shared mass percent of magnesium powder is 24%, and the shared mass percent of copper powder is 31%, and particle diameter is 300 orders; Plasticizer is polyethylene glycol and glycerine, and the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent is a butanone;
Other step [step 2)-6)] with embodiment 1; Obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 2.After the gained metal powder non-water-based curtain coating slurry curtain coating microstructure on gained casting films surface as shown in Figure 5, this casting films surfacing, powder granule and even air hole distribution.
Embodiment 4:
As shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, the solid concentration in the design slip is 47wt%, it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 47%, dispersant Hypermer KD-1 0.4%, polyvinyl butyral resin 3.74%, plasticizer 1.50%, solvent 47.36%; Choose metal powder, dispersant Hypermer KD-1 (big), polyvinyl butyral resin (binding agent), plasticizer and solvent raw material available from Britain's standing grain;
Described metal powder is magnesium powder and copper powder, and the shared mass percent of magnesium powder is 19%, and the shared mass percent of copper powder is 28%; The particle diameter of metal powder is 300 orders; Plasticizer is PMMA (polymethyl methacrylate); Solvent is the mixture of absolute ethyl alcohol and butanone, and the quality proportioning between absolute ethyl alcohol and the butanone is 1:1;
2) mix: solvent and dispersant HYPERMER KD-1 are mixed (dissolving dispersant), add metal powder then, mix, get mixed slurry A;
3) ball milling for the first time: A puts into nylon ball grinder with the gained mixed slurry, is ball-milling medium (silicon nitride ball) with the silicon nitride, carries out ball milling on ball mill, and ratio of grinding media to material is 1:1, and the ball milling time is 24 hours, and rotating speed is 200 rev/mins, obtains metal powder suspension B;
4) ball milling for the second time: in metal powder suspension B, add the polyvinyl butyral resin of polyvinyl butyral resin total amount 1/2, in metal powder suspension B, add the plasticizer of plasticizer total amount 1/2; Carrying out secondary ball milling then on ball mill, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 24 hours, and rotating speed is 200 rev/mins, obtains metal powder suspension C;
5) ball milling for the third time: in metal powder suspension C, add remaining polyvinyl butyral resin and remaining plasticizer; Carrying out ball milling then on ball mill three times times, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 24 hours, and rotating speed is 200 rev/mins, gets mixed slurry D;
6) post processing: after the mixed slurry D degasification behind the ball milling for the third time, the filtration, promptly obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 3.
Embodiment 5:
As shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, the solid concentration in the design slip is 47wt%, it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 47%, dispersant Hypermer KD-1 0.6%, polyvinyl butyral resin 3.74%, plasticizer 1.50%, solvent 47.16%; Choose metal powder, dispersant Hypermer KD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent raw material;
Described metal powder is magnesium powder and copper powder, and the shared mass percent of magnesium powder is 19%, and the shared mass percent of copper powder is 28%; The particle diameter of metal powder is 300 orders; Plasticizer is the mixture of polyethylene glycol and glycerine, and the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent is the mixture of absolute ethyl alcohol and butanone, and the quality proportioning between absolute ethyl alcohol and the butanone is 1:1;
Other step [step 2)-6)] with embodiment 4; Obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 3.
Embodiment 6:
As shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, the solid concentration in the design slip is 47wt%, it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 47%, dispersant Hypermer KD-1 0.8%, polyvinyl butyral resin 3.74%, plasticizer 1.50%, solvent 46.96%; Choose metal powder, dispersant Hypermer KD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent raw material;
Described metal powder is magnesium powder and copper powder, and the shared mass percent of magnesium powder is 19%, and the shared mass percent of copper powder is 28%; The particle diameter of metal powder is 300 orders; Plasticizer is the mixture of polyethylene glycol and glycerine, and the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent is the mixture of absolute ethyl alcohol and butanone, and the quality proportioning between absolute ethyl alcohol and the butanone is 1:1;
Other step [step 2)-6)] with embodiment 4; Obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 3.
Embodiment 7:
As shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, the solid concentration in the design slip is 47wt%, it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 47%, dispersant Hypermer KD-1 1.0%, polyvinyl butyral resin 3.74%, plasticizer 1.50%, solvent 46.76%; Choose metal powder, dispersant Hypermer KD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent raw material;
Described metal powder is magnesium powder and copper powder, and the shared mass percent of magnesium powder is 19%, and the shared mass percent of copper powder is 28%; The particle diameter of metal powder is 300 orders; Plasticizer is the mixture of polyethylene glycol and glycerine, and the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent is the mixture of absolute ethyl alcohol and butanone, and the quality proportioning between absolute ethyl alcohol and the butanone is 1:1;
Other step [step 2)-6)] with embodiment 4; Obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 3.
Embodiment 8:
As shown in Figure 1, the preparation method of metal powder non-water-based curtain coating slurry, the solid concentration in the design slip is 55wt%, it comprises the steps;
1) batching: by the shared mass percent of each raw material be: metal powder 55%, dispersant Hypermer KD-1 1.0%, polyvinyl butyral resin 2.5%, plasticizer 1.6%, solvent 39.9%; Choose metal powder, dispersant Hypermer KD-1, polyvinyl butyral resin (binding agent), plasticizer and solvent raw material;
Described metal powder is magnesium powder and copper powder, and the shared mass percent of magnesium powder is 24%, and the shared mass percent of copper powder is 31%; The particle diameter of metal powder is 250 orders; Plasticizer is PMMA (polymethyl methacrylate); Solvent is the mixture of absolute ethyl alcohol and butanone, and the quality proportioning between absolute ethyl alcohol and the butanone is 3:1;
2) mix: solvent and dispersant Hypermer KD-1 are mixed (dissolving dispersant), add metal powder then, mix, get mixed slurry A;
3) ball milling for the first time: A puts into nylon ball grinder with the gained mixed slurry, is ball-milling medium (silicon nitride ball) with the silicon nitride, carries out ball milling on ball mill, and ratio of grinding media to material is 1:1, and the ball milling time is 48 hours, and rotating speed is 250 rev/mins, obtains metal powder suspension B;
4) ball milling for the second time: in metal powder suspension B, add the polyvinyl butyral resin of polyvinyl butyral resin total amount 1/3, in metal powder suspension B, add the plasticizer of plasticizer total amount 1/3; Carrying out secondary ball milling then on the nylon ball grinding machine, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 48 hours, and rotating speed is 250 rev/mins, obtains metal powder suspension C;
5) ball milling for the third time: in metal powder suspension C, add remaining polyvinyl butyral resin and remaining plasticizer; Carrying out ball milling then on the nylon ball grinding machine three times times, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 48 hours, and rotating speed is 250 rev/mins, gets mixed slurry D;
6) post processing: after the mixed slurry D degasification behind the ball milling for the third time, the filtration, promptly obtain metal powder non-water-based curtain coating slurry.
The rheological characteristic of gained metal powder non-water-based curtain coating slurry as shown in Figure 4.
The polyvinyl butyral resin of different molecular weight, polyethylene glycol all are applicable to the present invention, each cited raw material of the present invention can both be realized the present invention, and the bound value of each raw material, interval value can both realize the present invention, the bound value and the interval value of technological parameter of the present invention (as time, rotating speed etc.) can both be realized the present invention, do not enumerate embodiment one by one at this.
Claims (3)
1. metal powder non-water-based curtain coating slurry is characterized in that it forms by comprising metal powder, dispersant HYPERMER KD-1, polyvinyl butyral resin, plasticizer and solvent feedstock production; The shared mass percent of each raw material is: metal powder 40～75%, dispersant Hypermer KD-10.4～2%, polyvinyl butyral resin 1～4%, plasticizer 1～5%, solvent 14～57.5%;
Wherein, plasticizer be following the two one of: 1. polymethyl methacrylate, the 2. mixture of polyethylene glycol and glycerine, the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent be following the two one of: 1. butanone, the 2. mixture of absolute ethyl alcohol and butanone, the quality proportioning between absolute ethyl alcohol and the butanone is 3:1～1:1.
2. metal powder non-water-based curtain coating slurry according to claim 1 is characterized in that: described metal powder is the mixing of any one or two kinds in magnesium powder, the copper powder, is any proportioning during two kinds mixing; The particle diameter of metal powder≤300 orders.
3. the preparation method of metal powder non-water-based curtain coating slurry as claimed in claim 1 is characterized in that it comprises the steps:
1) batching: by the shared mass percent of each raw material be: metal powder 40～75%, dispersant Hypermer KD-10.4～2%, polyvinyl butyral resin 1～4%, plasticizer 1～5%, solvent 14～57.5%; Choose metal powder, dispersant HYPERMERKD-1, polyvinyl butyral resin, plasticizer and solvent raw material;
Wherein, plasticizer be following the two one of: 1. polymethyl methacrylate, the 2. mixture of polyethylene glycol and glycerine, the quality proportioning between polyethylene glycol and the glycerine is 1:1; Solvent be following the two one of: 1. butanone, the 2. mixture of absolute ethyl alcohol and butanone, the quality proportioning between absolute ethyl alcohol and the butanone is 3:1～1:1;
2) mix: solvent and dispersant Hypermer KD-1 are mixed, add metal powder then, mix, get mixed slurry A;
3) ball milling for the first time: A puts into nylon ball grinder with the gained mixed slurry, is ball-milling medium with the silicon nitride, carries out ball milling on ball mill, and ratio of grinding media to material is 1:1, and the ball milling time is 6～48 hours, and rotating speed is 180～250 rev/mins, obtains metal powder suspension B;
4) ball milling for the second time: in metal powder suspension B, add the polyvinyl butyral resin of polyvinyl butyral resin total amount 1/3～2/3, in metal powder suspension B, add the plasticizer of plasticizer total amount 1/3～2/3; Carrying out secondary ball milling then on ball mill, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 6～48 hours, and rotating speed is 180～250 rev/mins, obtains metal powder suspension C;
5) ball milling for the third time: in metal powder suspension C, add remaining polyvinyl butyral resin and remaining plasticizer; Carrying out three times ball milling then on ball mill, is ball-milling medium with the silicon nitride, and ratio of grinding media to material is 1:1, and the ball milling time is 6～48 hours, and rotating speed is 180～250 rev/mins, gets mixed slurry D;
6) post processing: after the mixed slurry D degasification behind the ball milling for the third time, the filtration, promptly obtain metal powder non-water-based curtain coating slurry.
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| CN100398491C (en) * | 2006-11-28 | 2008-07-02 | 武汉理工大学 | Silicon nitride non-aqueous tape-casting slurry and its preparation method |
| CN100564314C (en) * | 2007-09-20 | 2009-12-02 | 武汉理工大学 | The preparation method who contains the water-base silicon nitride casting slurry of α-Dan Huagui whisker |
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2009
- 2009-03-17 CN CN2009100611574A patent/CN101497132B/en not_active Expired - Fee Related
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| CN101983807A (en) * | 2010-11-19 | 2011-03-09 | 武汉理工大学 | Preparation method of stable W-Cu metal tape-casting slurry with high solid phase content |
| CN102503444A (en) * | 2011-11-15 | 2012-06-20 | 中国电子科技集团公司第十三研究所 | Non-aqueous tape casting slurry and preparation method thereof |
| CN105321593A (en) * | 2014-11-13 | 2016-02-10 | 珠海罗西尼表业有限公司 | Medium printing sizing agent and preparation method therefor, and thick film circuit board using sizing agent |
| CN105855554A (en) * | 2016-05-18 | 2016-08-17 | 东南大学 | Self-adhesive metal sheet used for laminated object manufacturing |
| CN107234241A (en) * | 2017-06-05 | 2017-10-10 | 武汉理工大学 | A kind of micrometer level porous tungsten and preparation method thereof |
| CN107234241B (en) * | 2017-06-05 | 2019-07-12 | 武汉理工大学 | A kind of micrometer level porous tungsten and preparation method thereof |
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