Reinforcement method for three-dimensional shaped object
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.
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.