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Cardanol resin for three-dimensional printing and preparation method thereof

A cardanol resin, three-dimensional printing technology, applied in the direction of additive processing, can solve the problems of three-dimensional printing of difficult-to-paint and the curing time cannot be shortened, and achieve the effect of reducing the application cost

Active Publication Date: 2018-10-09
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current ultraviolet radiation polymerization technology of cardanol is the same as that of urushiol. Since the curing time cannot be shortened to within 1-2 minutes, it is still difficult to apply to 3D printing of lacquerware.

Method used

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  • Cardanol resin for three-dimensional printing and preparation method thereof
  • Cardanol resin for three-dimensional printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix cardanol and 1,3-pentadiene at a mass ratio of 100:25, and add 1% of the total mass of the two photoinitiators 2-hydroxy-2-methyl-1-phenylacetone, mix and stir evenly , that is, cardanol resin for 3D printing is obtained. Coat cardanol resin for 3D printing on tinplate (thickness 100 μm), under 380nm ultraviolet light (100 μW / cm 2 ) under irradiation, the cardanol resin can be cross-linked and cured within 20s, with a cross-linking degree of 87.5%, and the bending performance of the resin film reaches 7mm without cracks. Print the splines with a 3D printer, and the molding shrinkage of the splines is 0.5%.

Embodiment 2

[0024] Mix cardanol formal and 1,4-hexadiene with a mass ratio of 100:50, and add 1% of the total mass of the two photoinitiators 2-methyl-2-(4-morpholinyl)-1- [4-(methylthio)phenyl]-1-propanone, mixed and stirred evenly to obtain cardanol resin for three-dimensional printing. Coat cardanol resin for 3D printing on tinplate (thickness 100 μm), under 380nm ultraviolet light (100 μW / cm 2 ) under irradiation, the cardanol resin can be cross-linked and cured within 15s, the cross-linking degree is 94.0%, and the bending performance of the resin film reaches 2mm without cracks. Print the splines with a 3D printer, and the molding shrinkage of the splines is 0.2%.

Embodiment 3

[0026] Mix cardanol crown ether and 1,3-pentadiene with a mass ratio of 100:25, and add 1% of the total mass of the two photoinitiators 2,4,6-trimethylbenzoyl-diphenyl oxidation Phosphine, mixed and stirred evenly, to obtain cardanol resin for three-dimensional printing. Coat cardanol resin for 3D printing on tinplate (thickness 100 μm), under 380nm ultraviolet light (100 μW / cm 2 ) under irradiation, the cardanol resin can be cross-linked and cured within 35s, with a cross-linking degree of 86.5%, and the bending performance of the resin film reaches 4mm without cracks. Print the splines with a 3D printer, and the molding shrinkage of the splines is 0.5%.

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Abstract

The invention relates to cardanol resin for three-dimensional printing and a preparation method thereof. The preparation method comprises: mixing cardanol or cardanol derivatives and diene monomers ina mass ratio of 100:1 to 100:50, adding a photoinitiator accounting for 1% of total mass of the aforementioned two components, and stirring well to obtain the cardanol resin for three-dimensional printing. The cardanol resin for three-dimensional printing enables the basic physical properties of resin and the content of carbon-carbon dual bonds (C=C) to be changed by controlling the type and usage of the diene monomers under ultraviolet radiation; controllable free radical crosslinking polymerization is achieved for the cardanol resin by controlling the content of free radicals. The cardanolresin for three-dimensional printing is applicable to various photo-curing three-dimensional printing techniques and is suitable for the field of manufacturing of lacquerware, such as bodiless lacquerware.

Description

technical field [0001] The invention belongs to the field of three-dimensional printing resins, and in particular relates to a cardanol resin for 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 a treasure of Chinese lacquer art. However, with the change of the times, the shortcomings of high price of raw lacquer, complicated lacquerware technology and high price have become prominent, market demand has been greatly reduced, and industrial development has encountered a bottleneck. [0003] Cardanol is extracted from natural cashew nut shell oil through advanced technology. It is a natural product that can replace or partially replace urushiol. It has the characteristics of low price, low permeability and self-drying property. Cardanol molecules (as figure 1 Shown) contains a phenolic hydroxyl group, unsaturated aliphat...

Claims

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Application Information

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IPC IPC(8): C08F112/14C08F212/14C08F112/34C08F212/34C08F236/10C08F236/20C08F2/48B33Y70/00
CPCB33Y70/00C08F112/14C08F112/34C08F212/14C08F212/34C08F236/10C08F236/20C08F2/48
Inventor 薛涵与李心忠林棋方润
Owner MINJIANG UNIV
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