Sliding member, method of manufacturing sliding member, and gear

Patent metadata

Field	Value
Publication number	US-2016298050-A1
Application number	US-201615091950-A
Country	US
Kind code	A1
Filing date	Apr 6, 2016
Priority date	Apr 8, 2015
Publication date	Oct 13, 2016
Grant date	—

Abstract

In a method of manufacturing a sliding member including a polyamide resin and a filler, a compound having a carbodiimide bond is supplied during kneading of the polyamide resin and the filler.

First claim

What is claimed is:

1 . A method of manufacturing a sliding member, the sliding member including a polyamide resin and a filler, the method comprising
supplying a compound having a carbodiimide bond during kneading of the polyamide resin and the filler.

2 . The method according to claim 1 , wherein a number average molecular weight of a resin constituting the sliding member is 30,000 or higher.

3 . The method according to claim 2 , wherein a mixing proportion of the compound having the carbodiimide bond is 0.5 mass % to 4 mass % with respect to a total amount of a kneaded material.

4 . The method according to claim 3 , wherein a mixing proportion of glass fiber serving as the filler is 10 mass % to 50 mass % with respect to the total amount of the kneaded material.

5 . The method according to claim 3 , wherein after the polyamide resin is supplied to a cylinder of a kneader, the compound having the carbodiimide bond is supplied to an intermediate portion of the cylinder together with the filler or is supplied to a portion of the cylinder that is positioned downstream of a portion of the cylinder to which the filler is supplied.

6 . A sliding member manufactured by a method comprising:
adding a compound having a carbodiimide bond during kneading of a polyamide resin and a filler to prepare a raw resin; and molding the raw resin.

7 . The sliding member according to claim 6 , wherein a number average molecular weight of a resin constituting the sliding member is 30,000 or higher.

8 . The sliding member according to claim 7 , wherein a mixing proportion of the compound having the carbodiimide bond is 0.5 mass % to 4 mass % with respect to a total amount of the raw resin.

9 . A sliding member wherein:
the sliding member is formed of a resin containing a polyamide resin and a filler; and a number average molecular weight of the resin is 30,000 or higher.

10 . A gear manufactured by the method according to claim 1 , the gear comprising:
a sleeve portion; and a tooth-forming portion, wherein the sleeve portion and the tooth-forming portion are integrally molded using a raw resin obtained by kneading the polyamide resin, the filler, and the compound having the carbodiimide bond.

Assignees

• Jtekt Corp

Inventors

• Kunishima Takeshi
• Nishida Tomoya

Classifications

• F16C2208/02

  comprising fillers, fibres · CPC title

• C08K5/29

  Compounds containing {one or more} carbon-to-nitrogen double bonds · CPC title

• C08K7/14

  Glass · CPC title

• F16C33/44

  Selection of substances (F16C33/40, F16C33/41 take precedence) · CPC title

• B29L2031/04

  Bearings · CPC title