Preparation method and application of a photosensitive resin for UV curing 3D printing

A photosensitive resin, 3D printing technology, applied in photosensitive materials for opto-mechanical equipment, opto-mechanical equipment, photo-engraving process of pattern surface, etc. Small size, improved curing and molding accuracy, and high manufacturing precision

Inactive Publication Date: 2019-06-28
QINGDAO ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photosensitive resin prepared by the above research, after being cured by ultraviolet light, the formed parts still cannot meet the precision requirements in some high-precision requirements, such as key parts in the aviation field.

Method used

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  • Preparation method and application of a photosensitive resin for UV curing 3D printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In a 2000 ml four-necked glass bottle equipped with a condenser and a stirring device, add 616 grams of bis(3-ethyl-3-oxetanyl) methyl ether (OXT221, Japan Toya Synthetic Chemical Co., Ltd.), spiro ring Orthoester 184.8g, propoxylated trimethylolpropane triacrylate 431.2g, 1,4-cyclohexyldimethanol divinyl ether 168g, Irgacure 261 70g, benzoin dimethyl ether 42g, 3, 70 grams of 4-dimethoxybenzyl alcohol, 0.84 grams of octamethyltetrasiloxane polyethylene oxide copolymer, and 0.98 grams of GPE polyether / hydrophobic white carbon black composite defoamer.

[0048] Heat to a certain temperature and stir until it becomes a transparent light yellow uniform liquid, which is a prepared photosensitive resin. Using this photosensitive resin as material, some parts were made by using SPS250J laser rapid prototyping machine of Shaanxi Hengtong Intelligent Machine Co., Ltd.

[0049] After the prepared photosensitive resin is cured by ultraviolet light, its volume change and warpage ...

Embodiment 2

[0051] In a 2000 ml four-necked glass bottle equipped with a condenser and a stirring device, add 675 grams of bis(3-ethyl-3-oxetanyl) methyl ether (OXT221, Japan Toya Synthetic Chemical Co., Ltd.), spiro ring Ortho ester 202.5g, tripropylene glycol diacrylate 283.5g, trimethylolpropane triacrylate 189g, 1,4-cyclohexyldimethanol divinyl ether 150g, Irgacure 261 67.5g, benzoin dimethyl 45 grams of ether, 69 grams of 3,4-dimethoxybenzyl alcohol, 0.9 grams of polymethylphenylpolyethylene oxide copolymer, 1.05 grams of GPE polyether / hydrophobic silica composite defoamer.

[0052] Heat to a certain temperature and stir until it becomes a transparent light yellow uniform liquid, which is a prepared photosensitive resin. Using this photosensitive resin as material, some parts were made by using SPS250J laser rapid prototyping machine of Shaanxi Hengtong Intelligent Machine Co., Ltd.

[0053] After the prepared photosensitive resin is cured by ultraviolet light, the measured volume s...

Embodiment 3

[0055] In a 2000 ml four-neck glass bottle equipped with a condenser and a stirring device, add 620 grams of bis(3-ethyl-3-oxetanyl) methyl ether (OXT221, Japan Toya Synthetic Chemical Co., Ltd.), spiro ring Orthocarbonate 186g, Propoxylated Trimethylolpropane Triacrylate 434g, Triethylene Glycol Divinyl Ether 186g, Irgacure 261 74.4g, Benzoin Dimethyl Ether 49.6g, 3,4-Methylene Dioxygen 74.4 grams of benzyl alcohol, 0.93 grams of polymethylphenylpolyethylene oxide copolymer, and 1.08 grams of GP polyether / hydrophobic silica composite defoamer. Heat to a certain temperature and stir until it becomes a transparent light yellow uniform liquid, which is a prepared photosensitive resin. Using this photosensitive resin as material, some parts were made by using SPS250J laser rapid prototyping machine of Shaanxi Hengtong Intelligent Machine Co., Ltd.

[0056] After the prepared photosensitive resin is cured by ultraviolet light, the volume shrinkage rate Χ=0.5% is measured; the war...

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Abstract

The invention discloses a preparation method and application of photosensitive resin for ultrasonic curing 3D printing. The photosensitive resin mainly comprises the following raw material components in percentage by mass: active components: 70-90 percent (in percentage by total mass of the active components, and the same below) of a mixture of a low polymer A, a low polymer B and an acrylic ester monomer according to the ratio of 50: 15: 35 and 10-30 percent of an active diluent, and auxiliaries: 1-10 percent of a cationic initiator, 1-6 percent of a free radical photoinitiator, 1-8 percent of a promoter, 0.1-1.5 percent of a flatting agent and 0.1-1.5 percent of a defoaming agent. The raw material components are mixed according to the mass percentage, and then heated and stirred into transparent light-yellow liquid to prepare the photosensitive resin. After ultrasonic curing 3D printing molding, the volume shrinkage of a product is smaller than or equal to 1.0 percent, the warpage factor CF (6) is equal to + / - 0.2 percent, and the warpage factor CF (11) is equal to + / - 0.8 percent. The molded product is high in precision and can be applied to manufacturing of key parts for aviation.

Description

technical field [0001] The technology relates to a preparation method and application of a photosensitive resin for ultraviolet curing 3D printing. Background technique [0002] Photocuring 3D printing (Three Dimensional Printing, 3DP), which is a kind of rapid prototyping technology. As a new generation of 3D printing, it uses liquid photosensitive resin to form parts and cures them with ultraviolet light. It has the advantages of simple operation, fast forming speed, no pollution in the forming process, high precision of formed parts, and can be used in office environment. Therefore, the application prospect is very promising. [0003] Photocuring 3D printing uses all polymer photosensitive resins. One type of polymer photosensitive resin is acrylate-based photosensitive resin, which belongs to free radical photosensitive resin. Its advantages are fast curing speed and low price, but the curing shrinkage is serious, the workpiece is seriously warped, and it is difficult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/027G03F7/004
Inventor 林润雄李志乾马凤国魏燕彦
Owner QINGDAO ADVANCED MATERIAL TECH
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