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Cardanol/epoxy acrylate composite resin for three-dimensional laser printing and preparation method

An epoxy acrylate and laser three-dimensional technology, applied in the direction of additive processing, etc., can solve the problem that the curing time cannot be shortened, and achieve the effect of reducing application cost and excellent performance

Inactive Publication Date: 2019-08-02
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current natural raw lacquer or cardanol UV radiation polymerization technology cannot be shortened to 1-2min because of the curing time, and it is still difficult to apply to laser 3D printing of lacquerware

Method used

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  • Cardanol/epoxy acrylate composite resin for three-dimensional laser printing and preparation method
  • Cardanol/epoxy acrylate composite resin for three-dimensional laser printing and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix cardanol resin and bisphenol A epoxy acrylate at a mass ratio of 100:10, and add 1% of the total mass of the two photoinitiators 2,4-diethylthiazolone and stir evenly to obtain a laser three-dimensional printing Cardanol / epoxy acrylate composite resin; the resin is coated on tinplate (thickness 100μm), under 400nm ultraviolet light (100μW / cm 2 ) under irradiation, the resin can be cross-linked and cured within 40s, the cross-linking degree is 82.5%, and the bending performance of the resin film reaches 8mm without cracks. Print the splines with a 3D printer, and the molding shrinkage of the splines is 0.5%.

Embodiment 2

[0023] Mix cardanol formal and bisphenol A epoxy acrylate at a mass ratio of 100:20, and add 1% of the total mass of the two photoinitiators 2-isopropylthioxanthone and stir evenly to obtain laser three-dimensional printing Cardanol / epoxy acrylate composite resin was used; the resin was coated on tinplate (thickness 100μm), under 400nm ultraviolet light (100μW / cm 2 ) under irradiation, the resin can be cross-linked and cured within 35s, the cross-linking degree is 80.1%, and the bending performance of the resin film reaches 8mm without cracks. Print the splines with a 3D printer, and the molding shrinkage of the splines is 0.5%.

Embodiment 3

[0025] Mix cardanol resin and bisphenol A epoxy acrylate at a mass ratio of 100:40, and add 1% of the total mass of the two photoinitiators 2-isopropylthioxanthone and stir evenly to obtain a laser three-dimensional printing Cardanol / epoxy acrylate composite resin; the resin is coated on tinplate (thickness 100μm), under 400nm ultraviolet light (100μW / cm 2 ) under irradiation, the resin can be cross-linked and cured within 30s, the cross-linking degree is 81.9%, and the bending performance of the resin film reaches 8mm without cracks. Printed into splines with a 3D printer, the molding shrinkage of the splines is 0.4%.

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Abstract

The invention relates to cardanol / epoxy acrylate composite resin for three-dimensional laser printing and a preparation method of the composite resin. The preparation method of the composite resin comprises the following steps of: mixing cardanol based resin and bisphenol A epoxy acrylate at a mass ratio of 100:10-100:50, adding a photoinitiator accounting for 1% of total mass of the cardanol based resin and bisphenol A epoxy acrylate, and performing uniform stirring to form the cardanol / epoxy acrylate composite resin for the three-dimensional laser printing. According to the cardanol / epoxy acrylate composite resin for the three-dimensional laser printing, a content of a photoactive group and a content of a soft segment in the cardanol based resin can be regulated by controlling a dose ofbisphenol A epoxy acrylate under ultraviolet irradiation. That is to say, photocuring performance and basic physical properties of the resin are changed by controlling the dose of bisphenol A epoxy acrylate. The cardanol / epoxy acrylate resin is applicable to various three-dimensional photocuring laser printing technologies and the field of manufacturing of lacquer artware such as bodiless lacquer.

Description

technical field [0001] The invention belongs to the field of laser three-dimensional printing resins, and in particular relates to a cardanol / epoxy acrylate composite resin for laser three-dimensional printing and a preparation method thereof. Background technique [0002] Lacquerware is exquisite in craftsmanship and rich in culture, especially in modern bodiless lacquerware, which is not only a treasure of Chinese lacquer art. However, with the change of the times, the shortcomings of lacquerware, such as complicated craftsmanship and high price, have become prominent, the market demand has been greatly reduced, and the industrial development has encountered a bottleneck. [0003] Natural lacquer is the main raw material of Chinese lacquerware, and is known as the "king of paint", among which urushiol is the main film-forming raw material. However, urushiol is expensive and its annual output is limited, which greatly limits its application and promotion. Cardanol is a ch...

Claims

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Application Information

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IPC IPC(8): C08L61/04C08L63/10C08J3/24C08J3/28B33Y70/00
CPCB33Y70/00C08J3/24C08J3/28C08J2361/04C08J2463/10
Inventor 薛涵与夏建荣林棋李心忠方润
Owner MINJIANG UNIV
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