Degradable thermosetting 3D printing mold and preparation method thereof

A 3D printing and thermosetting technology, applied in 3D object support structures, manufacturing tools, additive manufacturing, etc., can solve the problems of low precision and dimensional stability, and achieve good dimensional stability, high printing precision, and good process controllability Effect

Active Publication Date: 2022-06-24
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soluble thermoplastic resins for 3D printing generally show lower precision and dimensional stability

Method used

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  • Degradable thermosetting 3D printing mold and preparation method thereof
  • Degradable thermosetting 3D printing mold and preparation method thereof
  • Degradable thermosetting 3D printing mold and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) (2,4,8,10-Tetraoxaspiro[5.5]undecane-3,9-diyl)bis(2-methoxy-4,1-phenylene)bis(acrylic acid 2- Preparation of methyl ester)

[0041]A solution of vanillin (60.86 g, 400 mmol), pentaerythritol (22.23 g, 200 mmol) and p-toluenesulfonic acid monohydrate (836.5 mg, 4.4 mmol) in 2-propanol (500 mL) was reacted at room temperature for 24 h. The solid product was obtained by filtration, and 300 ml of 2wt% NaHCO was used in turn 3 The solution was washed with 100 ml of deionized water. The crude product was refluxed in isopropanol (150 mL) for 30 minutes and cooled to room temperature. 4,4'-(2,4,8,10-tetraoxaspiro[5.5]undecan-3,9-diyl)bis(2-methoxyphenol) was obtained by filtration as a white solid. 4,4'-(2,4,8,10-Tetraoxaspiro[5.5]undecan-3,9-diyl)bis(2-methoxyphenol) (40.44 g, 100 mmol) was added with stirring ) and triethylamine (24.28 g, 240 mmol) were dissolved in dichloromethane (400 mL). A solution of methacryloyl chloride (20.91 g, 200 mmol) in dichloromethane (2...

Embodiment 2

[0055] 1) (2,4,8,10-Tetraoxaspiro[5.5]undecane-3,9-diyl)bis(2-methoxy-4,1-phenylene)bis(acrylic acid 2- Preparation of methyl ester)

[0056] A solution of vanillin (60.86 g, 400 mmol), pentaerythritol (17.78 g, 160 mmol) and p-toluenesulfonic acid monohydrate (380.23 mg, 2.0 mmol) in 2-propanol (500 mL) was reacted at 30° C. for 12 h. The solid product was obtained by filtration, and 300 ml of 2wt% NaHCO was used in turn 3 The solution was washed with 100 ml of deionized water. The crude product was refluxed in isopropanol (150 mL) for 30 minutes and cooled to room temperature. 4,4'-(2,4,8,10-tetraoxaspiro[5.5]undecan-3,9-diyl)bis(2-methoxyphenol) was obtained by filtration as a white solid. 4,4'-(2,4,8,10-Tetraoxaspiro[5.5]undecan-3,9-diyl)bis(2-methoxyphenol) (40.44 g, 100 mmol) was added with stirring ) and triethylamine (24.28 g, 240 mmol) were dissolved in dichloromethane (400 mL). A solution of methacryloyl chloride (19.87 g, 190 mmol) in dichloromethane (200 mL) w...

Embodiment 3

[0060] 1) (2,4,8,10-Tetraoxaspiro[5.5]undecane-3,9-diyl)bis(2-methoxy-4,1-phenylene)bis(acrylic acid 2- Preparation of methyl ester)

[0061] A solution of vanillin (60.86 g, 400 mmol), pentaerythritol (26.67 g, 240 mmol) and p-toluenesulfonic acid monohydrate (3802.3 mg, 20 mmol) in 2-propanol (500 mL) was reacted at 10 °C for 48 h. The solid product was obtained by filtration, and 300 ml of 2wt% NaHCO was used in turn 3The solution was washed with 100 ml of deionized water. The crude product was refluxed in isopropanol (150 mL) for 30 minutes and cooled to room temperature. 4,4'-(2,4,8,10-tetraoxaspiro[5.5]undecan-3,9-diyl)bis(2-methoxyphenol) was obtained by filtration as a white solid. 4,4'-(2,4,8,10-Tetraoxaspiro[5.5]undecan-3,9-diyl)bis(2-methoxyphenol) (40.44 g, 100 mmol) was added with stirring ) and triethylamine (24.28 g, 240 mmol) were dissolved in dichloromethane (400 mL). A solution of methacryloyl chloride (21.96 g, 210 mmol) in dichloromethane (200 mL) was ...

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Abstract

The invention relates to a degradable thermosetting 3D printing mold and a preparation method thereof. The preparation method of the degradable thermosetting 3D printing mold comprises the following steps: (1) taking vanillin, pentaerythritol and methacryloyl chloride as raw materials, and synthesizing a difunctional acrylate monomer containing a degradable diacetal structure through a two-step method; and (2) mixing the difunctional acrylate monomer containing the diacetal structure, 4-acryloylmorpholine and a photoinitiator, and carrying out photocuring 3D printing to obtain the degradable thermosetting 3D printing mold. The prepared degradable thermosetting 3D printing mold is high in printing precision, the preparation method is environmentally friendly, the preparation process is simple, industrial production is easy, the obtained resin has excellent comprehensive performance, and the method for preparing the high-performance degradable thermosetting 3D printing mold through the thermosetting resin is created.

Description

technical field [0001] The invention relates to a degradable thermosetting 3D printing mold and a preparation method thereof, in particular to a preparation method of a difunctional acrylate monomer containing a functional diacetal group and a photocuring 3D printing thereof, belonging to chemical engineering and macromolecular material technology field. Background technique [0002] A mold is a tool used to make molded objects, and is known as the "mother of industry". In industrial production, the mold mainly realizes the processing of the shape of the article by changing the physical state of the formed material, and is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, and engineering plastics, rubber, Compression molding or injection molding of ceramics and other products. Metal is the most common mold material, and with the rapid development of polymers, polymer molds have also become an important mold t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/58C08F222/20B29C64/124B33Y70/00B33Y80/00
CPCC08F220/58B29C64/124B33Y70/00B33Y80/00C08F222/1025
Inventor 缪佳涛葛美颖吴立新周宗佑郑龙辉王号朋
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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