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Improved polyamide-imide molding resins and methods for their preparation

A technology of imide resin and polyamide, used in mechanical equipment, bearings for rotary motion, sliding contact bearings, etc., can solve problems such as strength reduction

Inactive Publication Date: 2005-03-30
SOLVAY ADVANCED POLYMERS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of these materials is also reduced when the amount of additives involved in the mixture is the amount required to obtain the desired friction and wear resistance

Method used

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  • Improved polyamide-imide molding resins and methods for their preparation
  • Improved polyamide-imide molding resins and methods for their preparation
  • Improved polyamide-imide molding resins and methods for their preparation

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Embodiment Construction

[0010] The formulations of the present invention comprise polyamide-imide and fluoropolymer as resin components, and high graphite content, pitch-based carbon fibers.

[0011] Polyamide-amic acid resins suitable for use in the present invention are well known in the art and have been described and published, eg, in US Pat. The polyamide-amic acid resin can also be described as a polymeric material comprising a mixture of amide-amic acid units represented by the following structural formulas A and B:

[0012]

[0013] Wherein the connection of the two amido groups to the aromatic ring should be understood as representing 1,3 and 1,4 polyamide-amic acid configurations;

[0014]

[0015] where R is a moiety derived from an aromatic diamine component; R may also be a substituted or unsubstituted divalent arylene moiety selected from:

[0016] and

[0017] Wherein A is a divalent group, for example selected from -SO 2 -, -CO-, -C(CH 3 ) 2 -, -O-, -S- and chemical bo...

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Abstract

Molding resin formulations comprising polyimides and a fluropolymer lubricant such as PTFE intended for use in fabrication of molded goods for friction and wear applications exhibit improved wear characteristics and good surface lubricity when further compounded with high modulus, highly graphitic, pitch-based carbon fiber.

Description

[0001] The present invention relates to moldable compositions having good friction and wear resistance. More particularly, the present invention relates to moldable resin formulations comprising polyamide-imide resins, fluoropolymers, and high graphite content, pitch-based carbon fibers, which formulations have improved mechanical properties and good surface lubricity, Can be used in applications requiring excellent wear resistance under extreme conditions. Background of the invention [0002] Materials with the strength and wear resistance of lubricating metals are required in many applications in the automotive and industrial markets. Internally lubricating polymers are used as metal replacements in these applications due to their ease of secondary processing, higher performance, little or no reliance on external lubricants, and lower overall cost. [0003] Considerable work has been done to develop improved materials suitable for these applicat...

Claims

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Application Information

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IPC IPC(8): F16C17/04B29C45/00B29K27/18B29K77/00B29K307/04C08K3/34C08K7/02C08K7/06C08L27/12C08L27/18C08L79/08F16C33/20
CPCC08L27/12C08K7/06C08L79/08C08L27/18C08L2666/04
Inventor G·昂德伍德
Owner SOLVAY ADVANCED POLYMERS LLC
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