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公开(公告)号：US20240400795A1
公开(公告)日：2024-12-05
申请号：US18688849
申请日：2022-08-30
Applicant: UBE CORPORATION
Inventor： Kosuke OISHI , Yuya MIKI , Takehiro OKAZAKI , Hitoshi KODAMA , Seiichi ARAKAWA
Abstract: A molded article obtained from the polyamide resin composition has improved mechanical properties including a tensile strength, a tensile modulus, a flexural strength, and a flexural modulus, and improved suppression of warpage. The polyamide resin composition of the present invention is a polyamide resin composition comprising an aliphatic polyamide resin (A) and a fibrous reinforcing filler (B), wherein the aliphatic polyamide resin (A) has a number average molecular weight of less than 22,000, and wherein the ratio of a median of the fiber length of the fibrous reinforcing filler (B) to an average of the fiber length of the fibrous reinforcing filler (B) is 0.50 to less than 0.90.
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公开(公告)号：US20240352230A1
公开(公告)日：2024-10-24
申请号：US18688066
申请日：2022-08-24
Applicant: UBE CORPORATION
Inventor： Tetsuya YASUI , Masaya TONARI , Seiichi ARAKAWA
CPC classification number: C08K7/14 , C08K3/013 , C08K3/014 , C08K5/0091 , C08K5/12 , C08K5/34924 , C08K9/04 , C08K9/08
Abstract: This is to provide a polyamide resin composition that has good mechanical characteristics such as tensile characteristics, bending characteristics and impact resistance, and low water absorption.
The polyamide resin composition of the present invention comprises 55 to 78% by mass of an aliphatic polyamide resin (A), 20 to 35% by mass of glass fiber (B), 1 to 9% by mass of a crosslinking agent (C), 0.1 to 1.5% by mass of a heat-resistant agent (D) and 0 to 6% by mass of an inorganic filler other than glass fiber (E) in 100% by mass of the polyamide resin composition, and the aliphatic polyamide resin (A) has an average number of carbon atoms per one amide group of exceeding 6.
