Thermosetting resin composition, sliding member and method for producing sliding member

Patent metadata

Field	Value
Publication number	US-10451111-B2
Application number	US-201615009160-A
Country	US
Kind code	B2
Filing date	Jan 28, 2016
Priority date	Jul 31, 2013
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A thermosetting resin composition includes an epoxy compound having an isocyanuric acid ring represented by the following formula (1), and a solid lubricant.

First claim

What is claimed is:

1. A sliding member comprising:
a sliding surface; and
a self-lubricating liner formed on the sliding surface by a thermosetting resin composition including:
a solid lubricant;
a curing agent; and
an epoxy compound having an isocyanuric acid ring represented by the following formula (1):

wherein
X is a group containing an epoxy ring,
Y is an atom of H, a group composed only of C and H, a group composed only of C, H and O containing no epoxy ring, or a group containing an epoxy ring, and
Z is an atom of H, a group composed only of C and H, or a group composed only of C, H and O containing no epoxy ring,

and
a weight ratio (M/N) of a weight (M) of the curing agent to a weight (N) of the epoxy compound having the isocyanuric acid ring is in a range of (M/N)=0.65 to 1.65.

2. The sliding member according to claim 1 , wherein the sliding member is a sliding bearing.

3. The sliding member according to claim 2 , wherein the sliding bearing is a spherical bearing.

4. The sliding member according to claim 1 , wherein the sliding member includes a head portion, a shaft portion, and a thread portion, and the self-lubricating liner is formed on an outer circumferential surface of the shaft portion.

5. The sliding member according to claim 1 , wherein the solid lubricant is contained in an amount of 10% by weight to 70% by weight with respect to the entire amount of the thermosetting resin composition.

6. The sliding member according to claim 1 , wherein the solid lubricant contains polytetrafluoroethylene.

7. The sliding member according to claim 6 , wherein the polytetrafluoroethylene is contained in an amount of 10% by weight to 70% by weight with respect to the entire amount of the thermosetting resin composition.

8. A sliding member comprising:
a sliding surface; and
a self-lubricating liner formed on the sliding surface by a thermosetting resin composition including:
a solid lubricant;
a curing agent; and
a mixture of epoxy compounds having an isocyanuric acid ring represented by the following formula (1):

wherein the mixture includes:
an epoxy compound in which each of the X and Yin the formula (1) is the group containing the epoxy ring, and Z in the formula (1) is an atom of H, a group composed only of C and H, or a group composed only of C, H and O containing no epoxy ring, and
an epoxy compound in which only the X in the formula (1) is the group containing the epoxy ring, and each of Y and Z in the formula (1) is an atom of H, a group composed only of C and H, or a group composed only of C, H and O containing no epoxy ring, and
a weight ratio (M/N) of a weight (M) of the curing agent to a weight (N) of the mixture is in a range of (M/N)=0.65 to 1.65.

9. The sliding member according to claim 1 , wherein the epoxy compound having the isocyanuric acid ring is at least one selected from the group consisting of:
an addition reaction product of 1,3,5-tris(2,3-epoxypropyl)-1,3,5-triazine-2,4,6(1H, 3H, 5H)-trione and propionic acid anhydride;
1-methyl-3,5-bis-oxiranyl methyl-[1,3,5]triazine-2,4,6-trione;
acrylic acid 2-(3,5-bis-oxiranyl methyl-2,4,6-trioxo-[1,3,5]triazine-1-yl)ethyl ester; and
2-methyl-acrylic acid 2-(3,5-bis-oxiranyl methyl-2,4,6-trioxo-[1,3,5]triazine-1-yl)ethyl ester.

10. The sliding member according to claim 1 , wherein the thermosetting resin composition further comprises a thermoplastic resin.

11. The sliding member according to claim 10 , wherein the thermoplastic resin is polyether ether ketone.

12. The sliding member according to claim 1 , wherein the curing agent is acid anhydride.

13. The sliding member according to claim 12 , wherein the curing agent is at least one selected from the group consisting of:
methyltetrahydrophthalic acid anhydride;
tetrapropenylsuccinic anhydride;
ester of aliphatic acid dianhydride and polyalkylene glycol;
methylbicyclo[2,2,1]heptane-2,3-dicarboxylic anhydride; and
1,2,4-benzene tricarboxylic 1,2-anhydride.

14. A sliding member comprising:
a sliding surface; and
a self-lubricating liner formed on the sliding surface by a thermosetting resin composition including:
a solid lubricant;
glass fiber; and
an epoxy compound having an isocyanuric acid ring represented by the following formula (1):

wherein
X is a group containing an epoxy ring,
Y is an atom of H, a group composed only of C and H, a group composed only of C, H and O containing no epoxy ring, or a group containing an epoxy ring, and
Z is an atom of H, a group composed only of C and H, or a group composed only of C, H and O containing no epoxy ring.

15. The sliding member according to claim 8 , wherein the mixture further includes an epoxy compound having an isocyanuric acid ring represented by the formula (1) wherein each of X, Y and Z is a group containing an epoxy ring.

16. The sliding member according to claim 15 , wherein the sliding member is a sliding bearing.

17. The sliding member according to claim 15 , wherein the sliding bearing is a spherical bearing.

18. The sliding member according to claim 15 , wherein the sliding member includes a head portion, a shaft portion, and a thread portion, and the self-lubricating liner is formed on an outer circumferential surface of the shaft portion.

Assignees

• Minebea Mitsumi Inc

Inventors

• Karaki Tadahiko
• Kakegawa Aya
• Sagiyama Koichiro

Classifications

• F16C2208/86

  Epoxy resins · CPC title

• C09D163/06

  Triglycidylisocyanurates · CPC title

• C08G59/3236

  Heterocylic compounds · CPC title

• C08G59/4028

  Isocyanates; Thioisocyanates · CPC title

• C08L27/18

  Homopolymers or copolymers or tetrafluoroethene · CPC title