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A kind of preparation method of release agent for high-performance cast steel

A release agent, high-performance technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems that affect the service life of the mold, do not have the ability to isolate carbon elements, and reduce the strength of the mold, so as to prolong the service life, Low smoke generation and outstanding heat resistance

Active Publication Date: 2019-03-01
上海晟庭防护设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since most cast steels contain more carbon elements, the carbon elements in them can easily penetrate into the mold during the casting process, resulting in a decrease in the strength of the mold and blackening, which greatly affects the quality of the mold. service life
Common casting mold release agents currently available on the market do not have the function of isolating carbon elements from entering the mold

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method for a release agent for high-performance cast steel, comprising the following steps:

[0016] (1) In parts by weight, 69 parts of tetramethyldisiloxane, 14 parts of octaphenylcyclotetrasiloxane, 6 parts of butyl titanate, 0.3 parts of p-toluenesulfonyl isocyanate, 30 parts of deionized water After mixing, heat to 80°C, keep warm for 60 minutes, and set aside;

[0017] (2) Add 0.4 times the weight of the acrylate monomer to the mixture obtained in step (1), and then add an initiator 0.01 times the weight of the acrylic resin monomer, heat the mixture to 85 ° C, and heat preservation treatment After 3 hours, a release agent was prepared.

[0018] Specifically, the above-mentioned octaphenylcyclotetrasiloxane has an average particle size of 250 mesh.

[0019] Specifically, the above-mentioned acrylate monomer is methyl acrylate.

[0020] Specifically, the above-mentioned initiator is tert-butyl peroxybenzoate.

[0021] Using the release agent in th...

Embodiment 2

[0023] A preparation method for a release agent for high-performance cast steel, comprising the following steps:

[0024] (1) In parts by weight, 73 parts of tetramethyldisiloxane, 15 parts of octaphenylcyclotetrasiloxane, 8 parts of butyl titanate, 0.4 parts of p-toluenesulfonyl isocyanate, 35 parts of deionized water After mixing, heat to 85°C, keep warm for 80 minutes, and set aside;

[0025] (2) Add 0.5 times the weight of the acrylate monomer to the mixture obtained in step (1), and then add an initiator 0.02 times the weight of the acrylic resin monomer, heat the mixture to 90°C, and heat preservation treatment After 3.5 hours, a release agent was prepared.

[0026] Specifically, the above-mentioned octaphenylcyclotetrasiloxane has an average particle size of 280 mesh.

[0027] Specifically, the above-mentioned acrylate monomer is ethyl acrylate.

[0028] Specifically, the above-mentioned initiator is tert-butyl peroxy tert-valerate.

[0029] Using the release agent ...

Embodiment 3

[0031] A preparation method for a release agent for high-performance cast steel, comprising the following steps:

[0032] (1) In parts by weight, 75 parts of tetramethyldisiloxane, 17 parts of octaphenylcyclotetrasiloxane, 10 parts of butyl titanate, 0.5 parts of p-toluenesulfonyl isocyanate, 40 parts of deionized water After mixing, heat to 90°C, keep warm for 90 minutes, and set aside;

[0033] (2) Add 0.7 times the weight of the acrylate monomer to the mixture obtained in step (1), and then add 0.03 times the weight of the acrylic resin monomer to the initiator, heat the mixture to 95 ° C, and heat preservation treatment After 4 hours, a release agent was prepared.

[0034] Specifically, the above-mentioned octaphenylcyclotetrasiloxane has an average particle size of 300 mesh.

[0035] Specifically, the above-mentioned acrylate monomer is 2-ethyl methacrylate.

[0036] Specifically, the above-mentioned initiator is tert-butyl peroxy tert-valerate.

[0037] Using the rel...

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Abstract

The invention discloses a preparation method of a release agent for high-performance cast steel. The preparation method comprises the following operation steps: firstly, mixing tetramethyldisiloxane, octaphenylcyclotetrasiloxane, butyl titanate, p-toluenesulfonyl isocyanate and deionized water, then heating a mixture to 80 to 90 DEG C and carrying out thermal-insulation treatment for 60 to 90 minutes for later use; and secondly, adding an acrylate monomer into the mixture obtained in the first step, then adding an initiator, heating the mixture to 85 to 95 DEG C and carrying out the thermal-insulation treatment for 3 to 4 hours to obtain the release agent. The release agent provided by the invention has the advantages of high stability, high heat-resisting property, small amount of smoke, excellent lubrication performance in the high temperature environment and good demoulding effect; and besides, the phenomenon that carbon elements migrate to the surface of a mold can be effectively avoided, and the service life of the mold is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of cast steel preparation, and in particular relates to a preparation method of a release agent for high-performance cast steel. Background technique [0002] Cast steel is a cast iron alloy, which is a general term for iron-based alloys used to produce castings that do not undergo eutectic transformation during solidification. Cast steel is divided into three categories: cast carbon steel, cast low alloy steel and cast special steel. The advantages of cast steel are greater design flexibility, the strongest flexibility and variability in metallurgical manufacturing, improved overall structural strength and a wide range of weight changes. Cast steel is a kind of cast alloy, with iron and carbon as the main elements, and the carbon content is between 0-2%. Since most cast steels contain more carbon elements, the carbon elements in them can easily penetrate into the mold during the casting process, resulting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 周正明
Owner 上海晟庭防护设备有限公司
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