Reinforcement method for three-dimensional shaped object

Patent metadata

Field	Value
Publication number	US-10196316-B2
Application number	US-201415101709-A
Country	US
Kind code	B2
Filing date	Dec 3, 2014
Priority date	Dec 5, 2013
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

Provided is a method for easily reinforcing a three-dimensional shaped object. The method for reinforcing a three-dimensional shaped object comprises reinforcing the three-dimensional shaped object using an impregnating composition containing a 2-cyanoacrylic acid ester having a specific structure, said impregnating composition having a viscosity at 25° C. in a range of from 1 to 1000 mPa·s, and said impregnating composition having a Shore hardness D in a range of from 20 to 75 when being hardened. Preferably, the three-dimensional shaped object is formed of an inorganic powder.

First claim

The invention claimed is:

1. A method for reinforcing a three-dimensional shaped object comprising (a) reinforcing the three-dimensional shaped object with an impregnating composition containing a 2-cyanoacrylic acid ester, in which the 2-cyanoacrylic acid ester is at least one selected from the group consisting of a compound represented by the following general formula (1) and the compound represented by the following general formula (2):

wherein R 1 represents a straight-chain or branched-chain alkyl group having from 3 to 12 carbon atoms, cycloalkyl group, allyl group, or aryl group; and

wherein R 2 represents an alkylene group having from 1 to 4 carbon atoms, and R 3 represents a straight-chain or branched-chain alkyl group having from 1 to 8 carbon atoms,
said impregnating composition having a viscosity at 25° C. in a range of from 1 to 1000 mPa·s and
said impregnating composition having a Shore hardness D in a range of from 20 to 75 when being hardened.

2. The method for reinforcing a three-dimensional shaped object according to claim 1 , wherein the impregnating composition comprises both the compound represented by the general formula (1) and the compound represented by the general formula (2).

3. The method for reinforcing a three-dimensional shaped object according to claim 2 , wherein the impregnating composition further comprises a plasticizer.

4. The method for reinforcing a three-dimensional shaped object according to claim 2 , wherein the method further comprises, before (a), producing the three-dimensional shaped object by a powder binding process in which the powder is an inorganic compound.

5. The method for reinforcing a three-dimensional shaped object according to claim 4 , wherein the powder binding process is performed using a 3D printer.

6. The method for reinforcing a three-dimensional shaped object according to claim 4 , wherein the powder has an average particle size of from 1 to 300 μm.

7. The method for reinforcing a three-dimensional shaped object according to claim 1 , wherein the impregnating composition further comprises a plasticizer.

8. The method for reinforcing a three-dimensional shaped object according to claim 7 , wherein the method further comprises, before (a), producing the three-dimensional shaped object by a powder binding process in which the powder is an inorganic compound.

9. The method for reinforcing a three-dimensional shaped object according to claim 8 , wherein the powder binding process is performed using a 3D printer.

10. The method for reinforcing a three-dimensional shaped object according to claim 8 , wherein the powder has an average particle size of from 1 to 300 μm.

11. The method for reinforcing a three-dimensional shaped object according to claim 1 , wherein the method further comprises, before (a), producing the three-dimensional shaped object by a powder binding process in which the powder is an inorganic compound.

12. The method for reinforcing a three-dimensional shaped object according to claim 11 , wherein the powder binding process is performed using a 3D printer.

13. The method for reinforcing a three-dimensional shaped object according to claim 11 , wherein the powder has an average particle size of from 1 to 300 μm.

14. A method for reinforcing a three-dimensional shaped object comprising
(a) impregnating a composition containing a 2-cyanoacrylic acid ester into the three-dimensional shaped object; and
(b) curing the impregnated composition,
in which the 2-cyanoacrylic acid ester is at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2):

wherein R 1 represents a straight-chain or branched-chain alkyl group having from 3 to 12 carbon atoms, cycloalkyl group, allyl group, or aryl group; and

wherein R 2 represents an alkylene group having from 1 to 4 carbon atoms, and R 3 represents a straight-chain or branched-chain alkyl group having from 1 to 8 carbon atoms, said composition having a viscosity at 25° C. in a range of from 1 to 1000 mPa·s, and said composition having a Shore hardness D in a range of from 20 to 75 when being hardened.

15. The method for reinforcing a three-dimensional shaped object according to claim 14 , wherein the three-dimensional shaped object is one produced by a powder binding process in which the powder is an inorganic compound.

16. The method for reinforcing a three-dimensional shaped object according to claim 15 , wherein the powder binding process is performed using a 3D printer.

17. The method for reinforcing a three-dimensional shaped object according to claim 16 , wherein the powder has an average particle size of from 1 to 300 μm.

18. The method for reinforcing a three-dimensional shaped object according to claim 17 , wherein said composition is impregnated into the three-dimensional shaped object by coating a surface of the three-dimensional shaped object with said composition.

19. The method for reinforcing a three-dimensional shaped object according to claim 17 , wherein said composition is impregnated into the three-dimensional shaped object by immersing the three-dimensional shaped object into a liquid of said composition.

Assignees

• Toagosei Co Ltd

Inventors

• Oikawa Hiroshige
• Ando Yushi

Classifications

• C08F222/327

  Alpha-cyano-acrylic acid alkoxy ester · CPC title

• C04B2111/00181

  Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• C08J2333/12

  Homopolymers or copolymers of methyl methacrylate · CPC title

• C04B41/46

  with organic materials · CPC title