Water-based debinding binder used for ceramic injection moulding

A ceramic injection and binder technology, applied in the field of ceramic injection molding, can solve the problems of environmental pollution, operator poisoning, etc., and achieve the effects of safe recycling, high yield and low deformation rate

Inactive Publication Date: 2018-12-07
SHENZHEN ELEMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based degreasing binder contains water-soluble components, which can diffuse and dissolve into water during degreasing, and can use

Method used

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  • Water-based debinding binder used for ceramic injection moulding
  • Water-based debinding binder used for ceramic injection moulding
  • Water-based debinding binder used for ceramic injection moulding

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] Water-based degreasing binder for ceramic injection molding, which consists of the following components by weight percentage:

[0027]

[0028] The polyethylene glycol is composed of 15% PEG600, 30% PEG1000 and 55% PEG1500 by weight.

[0029] A ceramic injection molding method:

[0030] (1) Mixing and granulation: the water-based degreased binder ceramic powder prepared in this example is subjected to high-temperature banburying to prepare a ceramic feed;

[0031] (2) Injection molding: injection molding the above-mentioned ceramic feed material to prepare a ceramic injection green body;

[0032] (3) Debinding and sintering: Put the above-mentioned ceramic injection green body into water for debinding, and after debinding, put it into a sintering furnace for sintering to obtain a finished product.

[0033] Measure the rheological curve of the ceramic feed prepared in step (1), such as figure 1 As shown, the curve shows that the ceramic feed is pseudoplastic fluid...

Example Embodiment

[0036] Example 2

[0037] Water-based degreasing binder for ceramic injection molding, which consists of the following components by weight percentage:

[0038]

[0039] The polyethylene glycol is composed of 20% PEG600, 35% PEG1000 and 45% PEG1500 by weight.

[0040] A ceramic injection molding method:

[0041] (1) Mixing and granulation: the water-based degreased binder ceramic powder prepared in this example is subjected to high-temperature banburying to prepare a ceramic feed;

[0042] (2) Injection molding: injection molding the above-mentioned ceramic feed material to prepare a ceramic injection green body;

[0043] (3) Debinding and sintering: Put the above-mentioned ceramic injection green body into water for debinding, and after debinding, put it into a sintering furnace for sintering to obtain a finished product.

[0044] According to statistics, the finished product obtained after step (3) degreasing and sintering has a yield rate of 98.6%, and there are few phenomena such as p...

Example Embodiment

[0045] Example 3

[0046] Water-based degreasing binder for ceramic injection molding, which consists of the following components by weight percentage:

[0047] Polyethylene glycol 70%;

[0048] Polyoxymethylene 20%;

[0049] Paraffin wax 10%.

[0050] The polyethylene glycol is composed of 15% PEG600, 30% PEG1000 and 55% PEG1500 by weight.

[0051] A ceramic injection molding method:

[0052] (1) Mixing and granulation: the water-based degreased binder ceramic powder prepared in this example is subjected to high-temperature banburying to prepare a ceramic feed;

[0053] (2) Injection molding: injection molding the above-mentioned ceramic feed material to prepare a ceramic injection green body;

[0054] (3) Debinding and sintering: Put the above-mentioned ceramic injection green body into water for debinding, and after debinding, put it into a sintering furnace for sintering to obtain a finished product.

[0055] According to statistics, the finished product obtained after step (3) degreasin...

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Abstract

The invention relates to the technical field of ceramic injection moulding and specifically discloses a water-based debinding binder used for ceramic injection moulding. The water-based debinding binder comprises the following ingredients (by weight): 60-75% of polyethylene glycol, 15-20% of polyformaldehyde, 5-10% of solid paraffin, 0-5% of polymethacrylate, 0-5% of stearic acid, 0-5% of a plasticizer, and 0-5% of an antioxidant. The water-based debinding binder can be greatly wetted and wrapped with the ceramic powder, has good fluidity, and is beneficial to mold filling during injection moulding. Meanwhile, as the binder system contains a water-soluble component, water can be used as a debinding solvent to remove the binder, thus avoiding the use of toxic chemical solvents for debindingand greatly reducing the harm to operation staff and environmental pollution. The product is economic and environmentally-friendly.

Description

technical field [0001] The invention relates to the technical field of ceramic injection molding, in particular to a water-based degreasing binder for ceramic injection molding. Background technique [0002] Ceramic injection molding is a new type of ceramic molding technology developed on the basis of polymer plastic injection molding technology. Ceramic injection molding uses ceramic powder as the main raw material and polymer plastic binder as the auxiliary raw material. After the two are mixed together, they are mixed at high temperature to make ceramic feed, and then the ceramic feed is crushed and passed through a special injection molding machine and The mold is made into a ceramic green body with the desired shape and structure, and then the ceramic green body is degreased to remove the binder to obtain a ceramic green body, and finally the ceramic green body is sintered at a high temperature to obtain the desired ceramic product. Ceramic injection molding has the c...

Claims

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Application Information

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IPC IPC(8): C04B35/634
CPCC04B35/63448
Inventor 陈明吕翔高鹏屈小勇
Owner SHENZHEN ELEMENT TECH CO LTD
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