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Preparation method of photocuring ceramic slurry and photocuring ceramic slurry

A technology of ceramic slurry and light curing, which is applied in the field of materials, can solve the problems of affecting the printing effect of ceramic slurry delivery, high viscosity of ceramic slurry, and easy agglomeration, etc., to achieve excellent storage stability, improved transportation, and excellent mechanics performance effect

Pending Publication Date: 2022-01-28
深圳市金石三维打印科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

However, the existing photocurable ceramic slurry is generally directly mixed with ceramic powder, prepolymer, reactive diluent, photoinitiator, plasticizer, etc. In order to meet certain mechanical performance requirements, the proportion of ceramic powder used Very high, that is, it is easy to cause the viscosity of the obtained ceramic slurry to be too high and the fluidity is poor, which will easily affect the transportation and printing effect of the ceramic slurry; the conventional method is to modify the ceramic powder or add a dispersant To reduce the viscosity of the ceramic slurry, but the resulting ceramic slurry is prone to unstable phenomena such as agglomeration during long-term storage

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  • Preparation method of photocuring ceramic slurry and photocuring ceramic slurry
  • Preparation method of photocuring ceramic slurry and photocuring ceramic slurry

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preparation example Construction

[0014] Specifically, an embodiment of the present invention provides a method for preparing a light-cured ceramic slurry, comprising the following steps:

[0015] Step S1: stirring and mixing the perfluoropolyether and zeolite powder at a temperature of 90-110°C for 1-3 hours; obtaining the first mixture;

[0016] Step S2: adding polytetrafluoroethylene powder into the first mixture, and adjusting the temperature to 200-220° C. to continue stirring and mixing for 1-3 hours, and cooling to obtain the second mixture;

[0017] Step S3: adding ceramic powder, prepolymer and active diluent to the second mixture for mixing and ball milling to obtain a premix;

[0018] Step S4: adding a surface modifier and an initiator to the premixed solution, mixing, stirring and ball milling for 8-16 hours to obtain the final product.

[0019] In the embodiment of the present invention, the mass ratio of the perfluoropolyether, zeolite powder and polytetrafluoroethylene powder is 10-15:3:5.

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Embodiment 1

[0031] 10g of perfluoropolyether and 3g of zeolite powder (0.2 μm in particle size) were stirred and mixed for 2 h at a temperature of 100° C.; the first mixture was obtained; 5 g of polytetrafluoroethylene powder (formed by Polytetrafluoroethylene powder with a particle size of 2 μm and a polytetrafluoroethylene powder with a particle size of 0.4 μm are mixed at a mass ratio of 1:3), and the temperature is adjusted to 210 ° C and continued to stir and mix for 2 hours, and after cooling, the second Mixture: 40g of alumina ceramic powder, 30g of PUA, 30g of HEA and 5g of the second mixture are mixed and ball-milled to obtain a premix; 5g of KH550 and 3g of phenylphosphine dioxide are added to the premix and mixed and ball-milled for 12 hours to obtain the product.

Embodiment 2

[0033] 14g of perfluoropolyether and 3g of zeolite powder (0.4 μm in particle size) were stirred and mixed for 2 h at a temperature of 100° C.; the first mixture was obtained; 5 g of polytetrafluoroethylene powder (formed by Polytetrafluoroethylene powder with a particle size of 3 μm and polytetrafluoroethylene powder with a particle size of 0.4 μm are mixed at a mass ratio of 1:3), and the temperature is adjusted to 200 ° C and continued to stir and mix for 2 hours, and after cooling, the second Mixture: 40g of zirconia ceramic powder, 30g of EA, 30g of HDDA and 5g of the second mixture were mixed and ball milled to obtain a premix; 5g of KH570 and 3g of phenylphosphorus dioxide were added to the premix and mixed and ball milled for 12 hours to obtain the product.

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Abstract

The invention is applicable to the technical field of materials, and provides a preparation method of a photocuring ceramic slurry and the photocuring ceramic slurry, and the preparation method comprises the following steps: stirring and mixing perfluoropolyether and zeolite powder at 90-110 DEG C for 1-3 hours; obtaining a first mixture; adding polytetrafluoroethylene powder into the first mixture, adjusting the temperature to 200-220 DEG C, continuously stirring and mixing for 1-3 hours, and cooling to obtain a second mixture; adding ceramic powder, a prepolymer and a reactive diluent into the second mixture, and carrying out mixing and ball milling to obtain a premixed solution; and adding a surface modifier and an initiator into the premixed solution, mixing, stirring and ball-milling for 8-16 hours, thereby obtaining the product. The obtained photocuring ceramic slurry has excellent storage stability and sedimentation resistance, the conveying, blade coating and leveling effects of the slurry in the printing process are improved, the undesirable phenomena such as non-uniform printing caused by slurry sedimentation are avoided, and the photocuring ceramic slurry further has excellent mechanical properties and meets the requirements of SLA type printing equipment.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of light-cured ceramic slurry and the light-cured ceramic slurry. Background technique [0002] With the continuous development of production technology, 3D printing technology has gradually attracted people's attention. It can change the production method by cutting and assembling raw materials, and can realize production according to different needs anytime and anywhere. At the same time, 3D printing materials have become more diverse, and different materials are adapted to different printing principles, and the performance of materials is also constantly improving. [0003] Among them, the ceramic slurry required for printing equipment based on the principle of stereolithography (SLA) must ensure good fluidity and anti-settling properties. However, the existing photocurable ceramic slurry is generally directly mixed with ceramic powder, prep...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08L71/00C08L27/18C08K7/26C08K3/22C08K5/544C08F283/00C08F220/20C08F283/10B33Y70/10
CPCC08L51/08C08F283/008C08F283/105B33Y70/10C08K2003/2227C08K2003/2244C08L2205/025C08L71/00C08L27/18C08K7/26C08K3/22C08K5/544C08F220/20
Inventor 邱海平江泽星吴杰华
Owner 深圳市金石三维打印科技有限公司