Releasing agent used for casting

A release agent, ammonium persulfate technology, applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of high price, mildew, corrosion, etc., and achieve the effect of good mold release effect and low production cost.

Inactive Publication Date: 2012-01-25
王崇高
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the casting mold release agents used in the market are all relatively expensive. The mold release agents are acidic or alkaline, and have a certain corrosion effect on the surface of castings. After a period of time, mold spots or slight corrosion occur on the surface of castings. Phenomena and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 1. The weight percentage of the release agent formula is: 4% hydroxypropyl methacrylate, 5% acrylic acid, 5% butyl acrylate, 10% styrene, 0.5% ammonium persulfate, 0.3% emulsifier OP, deionized Water 53%, calcium stearate 5%, calcium carbonate 3%, talcum powder 5%, titanium dioxide 5%, sodium polyacrylate 0.7%, alcohol ester 12 3%, silane 0.5%.

[0011] 2, emulsion synthesis: be that 20% deionized water dissolves ammonium persulfate with accounting for total amount, it is mixed with ammonium persulfate solution for subsequent use, remaining deionized water is all put into reactor, emulsifier OP is put into reaction In the kettle, 2% hydroxypropyl methacrylate, 2% acrylic acid, 2% butyl acrylate, and 2% styrene are put into the reaction kettle, and the remaining hydroxypropyl methacrylate , acrylic acid, butyl acrylate and styrene are mixed and put into the high-level tank, turn on the stirring blade of the reactor, control the stirring speed to 60γ / min, and turn on the ...

Embodiment 2

[0014] 1. The weight percentage of the release agent formula is: 3% hydroxypropyl methacrylate, 7% acrylic acid, 5% butyl acrylate, 10% styrene, 1% ammonium persulfate, 0.5% emulsifier OP, deionized Water 40% to 70%, calcium stearate 5%, calcium carbonate 5%, talcum powder 5%, titanium dioxide 5%, sodium polyacrylate 1%, alcohol ester 12 2%, silane 0.5%.

[0015] 2, emulsion synthesis: be that 15% deionized water dissolves ammonium persulfate with accounting for total amount, it is mixed with ammonium persulfate solution for subsequent use, remaining deionized water is all put into reactor, emulsifier OP is put into reaction In the kettle, put 1% hydroxypropyl methacrylate, 3% acrylic acid, 2% butyl acrylate, and 3% styrene into the reaction kettle, and put the remaining hydroxypropyl methacrylate , acrylic acid, butyl acrylate and styrene are mixed and placed in the high-level tank, the stirring blade of the reactor is turned on, the stirring speed is controlled to 80γ / min, a...

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PUM

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Abstract

The invention discloses a production formula of a releasing agent used for casting and a preparation method thereof. The releasing agent is composed of hydroxypropyl methacrylate, crylic acid, butyl acrylate, styrene, ammonium persulphate, an emulsifying agent OP, deionized water, calcium stearate, calcium carbonate, talc powder, titanium pigment, sodium polyacrylate, alcohol ester 12 and silane.During production, a synthesis emulsion is prepared with an emulsion polymerization method; the synthesis emulsion is put into a high-speed dispersion machine; and then, the sodium polyacrylate, the talc powder, the titanium pigment, the calcium carbonate, the calcium stearate, the alcohol ester 12 and the silane are added into the dispersion machine to obtain the releasing agent used for casting. The releasing agent has the advantages of good releasing effect and low production cost, and does not corrode castings, and the castings can not generate mildew, corrosion and the like even if beingstored for more than a half year.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a production formula of a release agent for casting and a production method thereof. Background technique [0002] At present, the casting mold release agents used in the market are all relatively expensive. The mold release agents are acidic or alkaline, and have a certain corrosion effect on the surface of the casting. After a period of storage, mold spots or slight corrosion will occur on the surface phenomenon and other defects. Contents of the invention [0003] The purpose of the present invention is to provide a production formula and a preparation method of a neutral release agent with good demoulding effect, low production cost and no corrosion effect on castings. [0004] In order to achieve the above object, a mold release agent for casting of the present invention consists of hydroxypropyl methacrylate, acrylic acid, butyl acrylate, styrene, ammonium persu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02B22C3/00C10N40/36
Inventor 王崇高
Owner 王崇高
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