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Alumina ceramic injection molding wax based polyethylene multi-polymer bonding agent

An alumina ceramic and injection molding technology, which is applied in the field of wax-based polyethylene multi-polymer binder, can solve the problems that it is difficult to prepare ceramic parts with small volume, complex shape and dimensional accuracy, and limit the application field of ceramics, so as to achieve the reduction of defects , the effect of reducing production costs

Inactive Publication Date: 2009-06-17
王灿
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Problems solved by technology

[0002] The inherent brittleness of ceramic materials and the high hardness of some special ceramic materials make it difficult to produce ceramic parts with small volume, complex shape and high dimensional accuracy by using the traditional powder metallurgy process, that is, the method of pressing powder first and then machining , which largely limits the application fields of ceramics

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  • Alumina ceramic injection molding wax based polyethylene multi-polymer bonding agent

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Embodiment Construction

[0008] The present invention is illustrated below by specific examples.

[0009] The wax-based polyethylene polymer binder for alumina ceramic injection molding of the present invention is composed of paraffin, low-density polyethylene and stearic acid, and its component and volume ratio are: paraffin: low-density polyethylene: Stearic acid=60:20:14. .

[0010] Compatibility between polymer binders in injection molding or between polymers and plasticizers and lubricants is necessary. If the compatibility between organic carriers is poor, the viscosity of the mixture cannot be effectively reduced. Injection molding During the molding cooling process, a large amount of segregation of organic matter and the separation of the caking agent from the mold cannot obtain a molding body with uniform components.

[0011] The process of polymer material blending is actually a process of mutual diffusion between molecular chains, which is restricted by the force between molecular chains....

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Abstract

The invention relates to a wax-based polyethylene multi-polymer adhesive for alumina ceramics injection molding, which consists of wax, low-density polyethylene and stearic acid, wherein components and the volume portion ratio comprise: the wax: the low-density polyethylene: the stearic acid is equal to 60: 20: 14. The invention utilizes a method for injection molding of alumina ceramic by the wax-based polyethylene multi-polymer adhesive for the alumina ceramics injection molding to appropriately control the proportion of ceramic powder and the adhesive during the feeding preparation as well as the temperature and the process time of the injection molding, degreasing and burning under the condition of not increasing working procedures to obtain an ideal product, thereby reducing the defects of products and production cost.

Description

technical field [0001] The invention relates to the field of ceramic powder injection molding, in particular to a wax-based polyethylene multipolymer binder for alumina ceramic injection molding. Background technique [0002] The inherent brittleness of ceramic materials and the high hardness of some special ceramic materials make it difficult to produce ceramic parts with small volume, complex shape and high dimensional accuracy by using the traditional powder metallurgy process, that is, the method of pressing powder first and then machining , which largely limits the application fields of ceramics. Ceramics Injection Molding (CIM) is a branch of modern powder injection molding. It has the advantages of one-time molding of complex shape products, high dimensional accuracy of products, no need for subsequent processing or only a small amount of processing, easy to realize production automation and product performance. Excellent features make up for the shortcomings of trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/634
Inventor 王灿姜文华
Owner 王灿
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