Method for preparing super-thick atomization piece through film extrusion forming process
A molding process and atomizing sheet technology, applied in the field of preparation of ultra-thick piezoelectric ceramic ultrasonic atomizing sheets, can solve the problems of difficulty in guaranteeing product thickness and flatness, low efficiency, etc., achieve smooth surface of diaphragm, and improve internal quality , fine particle effect
Inactive Publication Date: 2017-04-26
GUIZHOU ZHENHUA HONGYUN ELECTRONICS
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
[0002] Rolling film forming and dry pressing forming are common methods for preparing piezoelectric ceramic sheets, which have the defects of low efficiency and difficulty in ensuring the thickness and flatness of the product; while extrusion film forming has high efficiency, but can only produce thinner diaphragms ( ≤0.40mm); At present, rolling film forming and dry pressing can only be reluctantly used to prepare products with a thickness greater than 0.50mm
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0022] 1) Raw materials are vibrated and milled, and the porcelain powder and water are mixed according to the weight ratio of 1:1.2, vibrated and milled for 2 hours, and the speed of the vibrating ball mill is 85 rpm;
[0023] 2) Dry the raw meal, filter the ground raw meal and bake it at 150°C for 6-8 hours;
[0024] 3) Pre-burning, sintering the dried raw meal at 1000°C for 27 hours to obtain clinker;
[0025] 4) clinker vibratory milling, mixing the clinker and water according to the weight ratio of 1:1.2, vibrating milling for 2 hours, the rotating speed of the vibrating ball mill is 85 rpm;
[0026] 5) Dry the clinker, drain the ground clinker and bake it at 150°C for 6-8 hours;
[0027] 6) Sieve, crush the dried clinker and pass through an 80-mesh sieve to obtain cooked porcelain powder;
[0028] 7) Glue preparation, mix the cooked porcelain powder, hydroxypropyl methylcellulose solution, glycerin, polyvinyl alcohol solution, oleic acid, and castor oil evenly in a wei...
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Abstract
The invention discloses a method for preparing a super-thick atomization piece through a film extrusion forming process, and belongs to methods for preparing piezoelectric ceramic. The method comprises the steps of raw material vibrational grinding, pre-sintering, roasted material vibrational grinding, glue preparation, film manufacturing, green blank compression moulding forming, glue discharge and sintering. According to the following steps, ceramic powder and water are mixed uniformly and subjected to vibrational grinding; pre-sintering is carried out after drying, and a roasted material is obtained; the roasted material and water are mixed uniformly and subjected to vibrational grinding; sieving is carried out after drying, and roasted ceramic powder is obtained; the roasted ceramic powder, a hydroxypropyl methyl cellulose solution, glycerol, a polyvinyl alcohol solution, oleic acid and castor oil are mixed uniformly in proportion, and a mixed material is obtained; a film extrusion machine is used for making the mixed material into a film piece; the film piece is pressed into a green blank in a required shape through a mold; the green blank is subjected to glue discharge sintering; and the green blank subjected to glue discharge sintering is sintered into a ceramic piece. The piezoelectric ceramic ultrasonic atomization piece which is prepared through the method and is 0.6-1.5 mm thick can completely meet the use requirement.
Description
technical field [0001] The invention relates to a method for preparing piezoelectric ceramics, in particular to a method for preparing an ultra-thick piezoelectric ceramic ultrasonic atomizing sheet. Background technique [0002] Rolling film forming and dry pressing forming are common methods for preparing piezoelectric ceramic sheets, which have the defects of low efficiency and difficulty in ensuring the thickness and flatness of the product; while extrusion film forming has high efficiency, but can only produce thinner diaphragms ( ≤0.40mm); At present, rolling film forming and dry pressing can only be reluctantly used to prepare products with a thickness greater than 0.50mm. [0003] The piezoelectric ceramic ultrasonic atomizing sheet is the core component of the piezoelectric ultrasonic transducer, and its thickness is usually 0.60-1.5mm. How to apply the extrusion molding process to the production process of the ultra-thick piezoelectric ceramic ultrasonic atomizing ...
Claims
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IPC IPC(8): C04B35/622C04B35/626C04B35/634C04B35/636
CPCC04B35/62218C04B35/6261C04B35/63416C04B35/6365C04B2235/604
Inventor 吴康和
Owner GUIZHOU ZHENHUA HONGYUN ELECTRONICS