The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2026
Filed:
Feb. 23, 2021
Kingfa Sci. & Tech. Co., Ltd., Guangzhou, CN;
Jian Dai, Guangzhou, CN;
Nanbiao Ye, Guangzhou, CN;
Xianbo Huang, Guangzhou, CN;
Chao Ding, Guangzhou, CN;
Yiquan Zheng, Guangzhou, CN;
Feng Wang, Guangzhou, CN;
Yajun Zhang, Guangzhou, CN;
KINGFA SCI. & TECH. CO., LTD., Guangzhou, CN;
Abstract
A halogen-free flame-retardant polyamide (PA) composite includes the following components in parts by weight: 20 to 50 parts of an aliphatic PA, 10 to 30 parts of an aromatic PA, 20 to 30 parts of a halogen-free flame retardant, 10 to 50 parts of a glass fiber, 1 to 5 parts of a char-forming agent, and 0 to 5 parts of an additive, where the aromatic PA is at least one selected from the group consisting of PA66/6T, PA MXD6, and PA6T/6I and the char-forming agent is at least one selected from the group consisting of dipentaerythritol (DPE) and tripentaerythritol (TPE). In the halogen-free flame-retardant PA composite, the aromatic PA itself has high-temperature resistance and aging resistance and exhibits a synergistic effect with a dense carbon layer formed by the char-forming agent during aging. The present disclosure discloses a preparation method of the halogen-free flame-retardant PA composite.