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Low-viscosity 3D (three-dimensional) printing photo-curing material

A light-curing material and 3D printing technology, applied in the field of 3D printing, can solve the problems of high cost and high relative viscosity, and achieve the effects of cost reduction, small volume shrinkage, and good comprehensive mechanical properties of materials

Inactive Publication Date: 2016-12-07
SUZHOU BC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, stereolithography technology has advantages that other molding technologies cannot match in terms of large objects, fineness, and rapid prototyping, but its cost is relatively high
In terms of 3D printing light-curing materials, the materials are required to have low viscosity, fast curing speed, high strength after curing, and moderate flexibility. However, due to the influence of their own molecular structure properties, the commonly used light-curing resins have relatively high relative viscosity. , need to be used with a large amount of diluent, relatively high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A 3D printing light-curing material is disclosed in Example 1, and the material formulation in Example 1 is shown in Table 1.

[0023] Formulation table in the embodiment 1 of table 1

[0024] components

Embodiment 2

[0026] A 3D printing light-curing material is disclosed in Example 2, and the material formulation in Example 2 is shown in Table 2.

[0027] Formulation table in table 2 embodiment 2

[0028] components

Embodiment 3

[0030] A 3D printing photocurable material is disclosed in Example 3, and its formulation is shown in Table 3.

[0031] Formulation table in the embodiment 3 of table 3

[0032] components

content

urethane acrylate

75

polyethylene glycol

25

Cycloaliphatic epoxy

40

1-Hydroxycyclohexylbenzophenone

2

Benzyl alcohol

4

Auxiliary

2

[0033] Other embodiments are also designed, and oxetane is selected as the cationic monomer. It is verified by experiments that alicyclic epoxy and oxetane are respectively coordinated with benzyl alcohol, and their effects in the entire material formula are not much different. .

[0034] Among them, the above-mentioned urethane acrylate has a density of 1.09g / cm at 25°C 3 , the viscosity is 150-175mPs.s, during the 3D printing process, the working temperature of the nozzle is 50-55°C, and the surface tension is 39.5-39.1mN / m; when preparing the material, add the above-menti...

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PUM

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Abstract

The invention discloses a low-viscosity 3D (three-dimensional) printing photo-curing material. The low-viscosity 3D printing photo-curing material comprises, by weight, 60-75 parts of urethane acrylate, 15-25 parts of polyethylene glycol, 25-40 parts of cationic monomers, 0.5-2 parts of initiators, 2.5-4 parts of accelerators and 0.5-2 parts of auxiliaries. The density of the urethane acrylate at the temperature of 25 DEG C is 1.09 g / cm<3>, the viscosity of the urethane acrylate is 150-175 mPs.s, and surface tension of the urethane acrylate is 39.5-39.1 mN / m under the condition that the working temperatures of sprayers are 50-55 DEG C in 3D printing procedures; the accelerators are added into the cationic monomers when materials are prepared, the low-viscosity 3D printing photo-curing material can be used after the accelerators and the cationic monomers are uniformly mixed with one another, and a mass ratio of the cationic monomers to the accelerators is 10:1. The low-viscosity 3D printing photo-curing material has the advantages that reactive diluents can be omitted, and the low-viscosity 3D printing photo-curing material is high in photo-curing speed; the low-viscosity 3D printing photo-curing material is good in mechanical property after being photo-cured, and the relative cost of the low-viscosity 3D printing photo-curing material can be reduced.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a low-viscosity 3D printing solidified material. Background technique [0002] Three-dimensional rapid prototyping technology is a relatively popular technology in manufacturing technology. It is a stacked manufacturing technology. Its principle is to create objects by adding materials to objects layer by layer. It obtains the path, limitation and method of stacking through discrete, and forms a three-dimensional entity through the superposition of stacked materials, which is combined with a computer system to improve the efficiency and accuracy of rapid prototyping, which is in stark contrast to the traditional removal molding. Construction, approximate processing, slice processing, section processing, section superposition, post-processing, etc. [0003] Among them, the 3DP process adopts three-dimensional three-dimensional molding. The section of the part is printed on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/14C08L63/00C08L71/02B33Y70/00
CPCC08L75/14B33Y70/00C08L2205/03C08L63/00C08L71/02
Inventor 郭池黄祺王智梁园陈号徐军戴晨雨
Owner SUZHOU BC TECH
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