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Molding curing agent and preparation process and application thereof

A preparation process and curing agent technology, applied in casting molding equipment, manufacturing tools, casting molds, etc., can solve the problems of high risk factor, strength, stability, insufficient high temperature resistance, and inability to improve the weather resistance of coated sand. The preparation process is simple, the curing time is shortened, and the effect of preventing agglomeration

Active Publication Date: 2018-07-31
柳州柳晶环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of strength, stability, and high temperature resistance of the coated sand used in the traditional casting process, it has become an inevitable trend to use 3D printed coated sand instead of traditional coated sand in 3D printing technology.
[0006] 3D printing coated sand needs to be molded and solidified during the preparation process, and the more common molding and curing agent currently used is urotropine. Although the use of urotropine can achieve the effect of molding and curing, it cannot improve the coating. Weather resistance of membrane sand
Moreover, urotropine is flammable and corrosive, and has a high risk factor during use. It needs to be replaced by a molding and curing agent that can improve the weather resistance of coated sand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation process of molding curing agent in the present embodiment comprises the following steps:

[0032] A. Add 10 parts of phenolic resin, 8 parts of polyvinyl butyral, 4 parts of polyvinyl alcohol, 5 parts of water-soluble silicone oil, and 5 parts of paraffin oil into the mixer, and mix and stir at a temperature of 80 ° C. After mixing and stirring for 10 min, mixture A was obtained;

[0033] B. Add 3 parts of triethanolamine, 10 parts of polyacrylamide, 2 parts of coconut oil amine, 4 parts of carboxymethyl cellulose, and 6 parts of molybdenum disulfide into a stirring tank with a stirring rate of 1000 rpm for mixing and stirring. After mixing and stirring for 20 minutes, mixture B was obtained;

[0034] C. Add the above mixture B to the above mixture A, then add 4 parts of acrylic resin powder, 3 parts of titanium dioxide and 20 parts of deionized water, mix them and add them to a water bath, and heat them in a water bath at a temperature of 52°C. And ke...

Embodiment 2

[0036] The preparation process of molding curing agent in the present embodiment comprises the following steps:

[0037] A. Add 20 parts of phenolic resin, 18 parts of polyvinyl butyral, 12 parts of polyvinyl alcohol, 10 parts of water-soluble silicone oil, and 15 parts of paraffin oil into the mixer, and mix and stir at a temperature of 120 ° C. Mixture A was obtained after mixing and stirring for 20 minutes;

[0038] B, 8 parts of triethanolamine, 20 parts of polyacrylamide, 8 parts of coconut oil amine, 12 parts of carboxymethyl cellulose, and 12 parts of molybdenum disulfide are added to a stirring tank with a stirring rate of 3000 rpm for mixing and stirring, After mixing and stirring for 30 minutes, mixture B was obtained;

[0039] C. Add the above mixture B to the above mixture A, then add 10 parts of acrylic resin powder, 9 parts of titanium dioxide and 30 parts of deionized water, mix them and add them to a water bath, and heat them in a water bath at a temperature o...

Embodiment 3

[0041] The preparation process of molding curing agent in the present embodiment comprises the following steps:

[0042] A. Add 12 parts of phenolic resin, 9 parts of polyvinyl butyral, 5 parts of polyvinyl alcohol, 6 parts of water-soluble silicone oil, and 7 parts of paraffin oil into the mixer, and mix and stir at a temperature of 85 ° C. Mixture A was obtained after mixing and stirring for 12 minutes;

[0043] B. Add 4 parts of triethanolamine, 12 parts of polyacrylamide, 3 parts of coconut oil amine, 6 parts of carboxymethyl cellulose, and 7 parts of molybdenum disulfide into a stirring tank with a stirring speed of 1500 rpm for mixing and stirring. After mixing and stirring for 22 minutes, mixture B was obtained;

[0044] C. Add the above mixture B to the above mixture A, then add 5 parts of acrylic resin powder, 4 parts of titanium dioxide and 22 parts of deionized water, mix them and add them to a water bath, and heat them in a water bath at a temperature of 54°C. An...

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PUM

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Abstract

The invention discloses a molding curing agent. The raw materials of the molding curing agent comprise the ingredients of, by weight, 10-20 parts of phenolic resin, 8-18 parts of polyvinyl butyral, 4-12 parts of polyvinyl alcohol, 5-10 parts of water soluble silicone oil, 3-8 parts of triethanolamine, 10-20 parts of polyacrylamide, 2-8 parts of cocoanut oil amine, 5-15 parts of paraffin oil, 4-12parts of carboxymethylcellulose, 4-10 parts of acrylic resin powder, 3-9 parts of titanium dioxide, 6-12 parts of molybdenum disulfide and 20-30 parts of deionized water. The invention further discloses application of the prepared molding curing agent in 3D printing coated sand molding. By means of the prepared molding curing agent, the bonding strength of coated sand can be improved, the heat resistance, aging resistance and other weather abilities of the coated sand are improved, and the service life of the coated sand is prolonged.

Description

technical field [0001] The invention belongs to the technical field of molding curing agent, and in particular relates to a molding curing agent and its preparation process, as well as the application of the molding curing agent in the molding of 3D printing coated sand. Background technique [0002] Curing agent, also known as hardening agent, curing agent or stabilizer, is a kind of substance or mixture that promotes or controls the curing reaction. Curing is accomplished by adding a curing (crosslinking) agent. [0003] The type of curing agent has a great influence on the mechanical properties, heat resistance, water resistance and corrosion resistance of the cured product. Generally speaking, the cured product with excellent heat resistance can be obtained by using a curing agent with a high curing temperature. In order to improve the weather resistance of the cured product, a corresponding curing agent is required. [0004] The curing agent is widely used in concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/16B33Y70/00
CPCB22C1/167B33Y70/00
Inventor 任文强
Owner 柳州柳晶环保科技有限公司
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