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Stereolithography resin compositions and three-dimensional objects made therefrom

Inactive Publication Date: 2010-09-09
DSM IP ASSETS BV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0033]An object of the present invention is to provide a photocurable resin composition for three-dimensional photofabrication which produces a cured product (three-dimensional fabricated product) exhibiting high toughness (e.g., folding resistance and impact resistance) and high rigidity (e.g., Young's modulus and flexural modulus), and a three-dimensional fabricated product formed of the composition.
[0035]The photocurable resin composition of the present invention can produce a cured product having mechanical properties resembling to engineering plastics such as an ABS resin and can thus be suitably used as a material for forming a trial product of parts consisting of engineering plastics.

Problems solved by technology

However, the technologies disclosed in Patent Documents JP-A-1-204915, JP-A-2-208305, JP-A-3-160013 (composition (a)) have a limitation in that it is difficult to obtain a high fabrication accuracy due to large cure shrinkage.
The technology disclosed in Patent Document JP-A-1-213304 (composition (b)) ensures a high fabrication accuracy, but tends to produce a brittle cured product with low toughness.
Moreover, the curing speed is insufficient.
The technologies disclosed in Patent Documents JP-A-2-28261, JP-A-2-75618, JP-A-6-228413, JP-A-11-310626, JP-A-11-228610, JP-A-11-240939) (composition (c)) have a limitation in that some mechanical properties (particularly toughness) are insufficient as compared with general-purpose resins.
However, the mechanical properties (particularly toughness) of the resulting composition are still insufficient for use as a prototype of plastic parts produced using an engineering plastic such as an ABS resin.
Moreover, the Young's modulus and the like of the composition decrease when adding a large amount of elastomer particles aiming at increasing toughness, whereby a fabricated product having high rigidity cannot obtained.

Method used

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  • Stereolithography resin compositions and three-dimensional objects made therefrom
  • Stereolithography resin compositions and three-dimensional objects made therefrom
  • Stereolithography resin compositions and three-dimensional objects made therefrom

Examples

Experimental program
Comparison scheme
Effect test

examples 2 to 5

[0193]Curable liquid resin compositions were prepared in the same manner as in Example 1, except for using the compounds shown in Table 3 as component (F). Test specimens (cured products) were prepared from the resulting liquid resin compositions for evaluation. The evaluation method is the same as described above. The results are shown in Table 3.

TABLE 3Example 2Example 3Example 4Example 5Type of componentPB / GMA +PB / GMA +PB / alicyclicPB / OXMA +(F) (core / shell layer)PMMAPMMAepoxy + PMMAPMMAContent of2,4101,8102,4901,900functional group(g / eq)Diameter of100100100100component (F) (nm)Viscosity (mPa · s)1,2001,2101,2101,200[Evaluation]Bending modulus of2,1002,0002,1002,200elasticity (MPa)Izod impact value2.43.73.54.3(kJ / m2)PB: PolybutadieneGMA: Glycidyl methacrylate (monomer for epoxy modification)PMMA: Polymethyl methacrylateAlicyclic epoxy: Methacrylate having an alicyclic epoxy group (monomer for epoxy modification), “CYCLOMER M100” manufactured by Daicel Chemical Industries, Ltd.OXMA:...

example 6

[0194]The same experiment as in Example 2 was carried out except that the test specimen (cured product) was heated at 80° C. for two hours after molding.

example 7

[0195]The same experiment as in Example 3 was carried out except that the test specimen (cured product) was heated at 80° C. for two hours after molding.

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Abstract

A photocurable resin composition for three-dimensional photofabrication operations, including stereolithography, comprising (A) a cationically polymerizable compound having two or more bisphenol structures and one or more hydroxyl groups, (B) a cationically polymerizable compound other than the component (A), (C) a cationic photoinitiator, (D) a radically polymerizable compound, (E) a radical photoinitiator, and (F) multilayer polymer particles having a core and a shell layer, the shell layer containing functional group-modified rubber polymer particles having at least one reactive functional group.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a photocurable resin composition for three-dimensional photofabrication and a three-dimensional fabricated object formed of the composition. This type of photocurable resin composition is typically referred to as a stereolithography resin and the process of making the three dimensional object using the resin composition is typically referred to as stereolithography.[0002]The present invention also includes the process of making the three-dimensional object and the three dimensional object itself.BACKGROUND OF THE INVENTION[0003]A three-dimensional photofabrication method is known in which a step of selectively applying light to a photocurable resin composition to form a cured resin layer is repeated to form a three-dimensional fabricated product in which the cured resin layers are integrally stacked (See Patent Documents JP-A-60-247515, JP-A-62-35966, JP-A-62-101408, and JP-A-5-24119). The process of making the three dimen...

Claims

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Application Information

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IPC IPC(8): C08F2/46B29C35/08
CPCG03F7/0037Y10T428/24893G03F7/038G03F7/027B33Y10/00B33Y70/00G03F7/00
Inventor UEDA, MASAHIROTAKASE, KATSUYUKIKUROSAWA, TAKAHIKO
Owner DSM IP ASSETS BV
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