Release agent and preparation method and application thereof

A technology of release agent and thickener, which is applied in the field of release agent and its preparation to achieve the effects of strengthening the edge, improving the yield of green embryos, and reducing the residual rate

Inactive Publication Date: 2020-12-18
沈阳中钛装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a blank about the release agent and its preparation method used in the two processes of cold and hot pressing at the same time.

Method used

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  • Release agent and preparation method and application thereof
  • Release agent and preparation method and application thereof
  • Release agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a release agent, including the following components in mass percentage:

[0057]

[0058] Wherein, the pH value of the release agent is 8.

[0059] The present embodiment provides the preparation method of above-mentioned release agent simultaneously, comprises the steps:

[0060] (1) After mixing the polyacrylic resin emulsifying thickener and xanthan collagen, adjust the viscosity to 4200cps, and stir at 30r / min for 120min to form a suspension-free milky viscous liquid;

[0061](2) After boron nitride and graphite are mixed, the mixture is added to the non-suspension-free opalescent viscous liquid several times in a small amount, the stirring rate is adjusted to 50 r / min, and the stirring is uniform to obtain the premixed viscous liquid I;

[0062] (3) Add carboxymethyl cellulose and polycarboxylate ammonium salt macromolecular dispersant successively to the premixed viscous liquid I, and use ammonium citrate and citric acid pH buffering p...

Embodiment 2

[0066] This embodiment provides a release agent, including the following components in mass percentage:

[0067]

[0068] Wherein, the pH value of the release agent is 8.

[0069] The present embodiment provides the preparation method of above-mentioned release agent simultaneously, comprises the steps:

[0070] (1) After mixing the polyacrylic resin emulsifying thickener and xanthan collagen, adjust the viscosity to 4200cps, and stir at 30r / min for 120min to form a suspension-free milky viscous liquid;

[0071] (2) After boron nitride and graphite are mixed, the mixture is added to the non-suspension-free opalescent viscous liquid several times in a small amount, the stirring rate is adjusted to 50 r / min, and the stirring is uniform to obtain the premixed viscous liquid I;

[0072] (3) Add carboxymethyl cellulose and polycarboxylate ammonium salt macromolecular dispersant successively to the premixed viscous liquid I, and use ammonium citrate and citric acid pH buffering ...

Embodiment 3

[0076] This embodiment provides a release agent, including the following components in mass percentage:

[0077]

[0078] Wherein, the pH value of the release agent is 8.

[0079] The present embodiment provides the preparation method of above-mentioned release agent simultaneously, comprises the steps:

[0080] (1) After mixing the polyacrylic resin emulsifying thickener and guar gum, adjust the viscosity to 4500cps, and stir at 60r / min for 120min to form a milky viscous liquid without suspension;

[0081] (2) After mixing boron nitride and graphite, add the mixture to the non-suspension milky viscous liquid several times in small amounts, adjust the stirring speed to 60 r / min, and stir evenly to obtain the premixed viscous liquid I;

[0082] (3) Add carboxymethyl cellulose and polycarboxylate ammonium salt macromolecular dispersant successively to the premixed viscous liquid I, and use ammonium citrate and citric acid pH buffering pair as pH regulator to adjust the syste...

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Abstract

The invention relates to the field of release agents, in particular to a release agent and a preparation method and application thereof. The release agent comprises the following components in percentage by mass: 1 to 5 wt% of boron nitride, 7 to 15 wt% of graphite, 0.02 to 0.05 wt% of a surfactant and 0.01 to 0.04 wt% of a dispersing agent, wherein the pH value of the release agent is 8-10. The release agent is especially suitable for boron carbide/rare earth oxide-based protective ceramics, and can meet the release treatment of cold and hot pressing processes at the same time. The mold release agent disclosed by the invention not only meets the mold release treatment of a cold-pressed green body in a ceramic preparation process, but also can block the adhesion of a hot-pressed mold and asample piece, so that the production cost is reduced, and the labor and time costs consumed by mold cleaning, mold surface defect repairing and sample piece surface impurity removal are reduced.

Description

technical field [0001] The invention relates to the field of release agents, in particular to a release agent and its preparation method and application. Background technique [0002] In the preforming process of metals, ceramics and polymer materials, how to separate the target sample from the mold has always been a hot spot of exploration; especially for special-shaped functional ceramics, due to its unique shape, the force on the special-shaped part is often uneven. As a result, the partial strength is not good, and the release effect of the release agent is particularly important at this time. [0003] Taking the sintering of boron carbide special-shaped ceramics as an example, carbon paper is often used to isolate the sample from the mold, usually 3 to 5 layers are laid, and the surface of the sample needs to be polished in the later stage to remove the residual carbon paper, so as to meet the requirements of the furnace. The required carbon paper has very high standar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M169/00B28B7/38C10N40/36
CPCC10M169/04C10M169/00B28B7/384C10M2201/0413C10M2201/003C10M2209/12C10M2209/086C10M2209/084C10M2219/104
Inventor 王宏孙宏伟郭方慧孟庆海
Owner 沈阳中钛装备制造有限公司
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