Polyamide resin composition for fuse elements, and fuse element

• US 20030055160A1
• Filed: 08/07/2002
• Published: 03/20/2003
• Est. Priority Date: 08/07/2001
• Status: Abandoned Application

• Current Assignee: Pacific Engineering Corporation (Stantec Incorporated), Unitika Limited
• Original Assignee: Pacific Engineering Corporation (Stantec Incorporated), Unitika Limited
• Inventors: Fujimoto, Koji, Murakami, Iwao, Yamazaki, Masaaki, Andoh, Hideki
• Application Number:
  US10/213,101
• Publication Number:
  US 20030055160A1
• Time in Patent Office: Days
• US Class Current: 524/606
• CPC Class Codes: C08K 5/005 Stabilisers against oxidation, heat, light, ozone
• CPC Class Codes: C08L 77/00 Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 77/02 Polyamides derived from omega-amino carboxylic acids or from lactams thereof C08L77/10 takes precedence
• CPC Class Codes: C08L 77/06 Polyamides derived from polyamines and polycarboxylic acids C08L77/10 takes precedence
• CPC Class Codes: H01H 85/0417 with parallel side contacts
• CPC Class Codes: H01H 85/17 characterised by the casing material

Abstract

The present invention is to provide a polyamide resin composition for fuse elements, assuring sufficient arc resistance upon boosting of vehicles voltage (e.g., 42 V system), being excellent in rigidity, heat resistance and transparency.

The present invention relates to a polyamide resin composition for fuse elements, comprising: a mixed polyamide 100 parts by mass consisting of (A) polycaproamide (nylon 6) 95 to 5% by mass and (B) poly(hexamethylene adipamide) (nylon 66) 5 to 95% by mass; and (C) a silicate layer of lamellar silicate 0.1 to 20 parts by mass dispersed on molecular order level in the above described (A) and/or (B). The polyamide resin composition may further contain (D) an antioxidant, (E) a metal soap based lubricant, and/or (F) an inorganic fibrous reinforcing material are contained. The present invention also relates to a fuse element formed from the polyamide resin composition for fuse elements.

Claims

1. A polyamide resin composition for fuse elements, comprising:

100 parts by mass of a mixed polyamide consisting of (A) 95 to 5% by mass of polycaproamide (nylon

     6) and (B) 5 to 95% by mass of poly(hexamethylene adipamide) (nylon

     66); and

(C) 0.1 to 20 parts by mass of a silicate layer of lamellar silicate dispersed on molecular order level in said (A) and/or said (B).

2. The polyamide resin composition for fuse elements according to claim 1, further comprising;

(D) 0.1 to 4 parts by mass of an antioxidant to 100 parts by mass of said mixed polyamide.

3. The polyamide resin composition for fuse elements according to claim 1 or 2, further comprising;

(E) 0.01 to 0.5 parts by mass of a metal soap based lubricant to 100 parts by mass of said mixed polyamide.

4. The polyamide resin composition for fuse elements according to one of claims 1 to 3, further comprising;

(F) 3 to 10 parts by mass of an inorganic fibrous reinforcing material to 100 parts by mass of said mixed polyamide.

5. A fuse element comprising;

a housing, a pair of terminals projecting from a predetermined flat surface thereof and aligned in a parallel state, and a fusing element connected between base end sides of both terminals in said housing, wherein said housing is formed from the polyamide resin composition for fuse elements according to one of claims 1 to 4.