Polyamide (PA) bụ nke a na-akpọkarị naịlọn, na ogologo naịlọn carbon carbon na-ezo aka na ụdị nylon nwere otu 10 ma ọ bụ karịa methylene n'etiti njikọ amide dị n'akụkụ isi nke macromolecule, dị ka PA11, PA12, PA1010, PA1212, PA1012, wdg. .

N'ime ha, PA610 na PA612 abụọ aliphatic polyamides, nhọrọ nke ogologo yinye diamines na hexamethylene diamine condensation, na-ekwusi ike, adịghị ezute nkọwa ahụ dị n'elu, n'ihi ogologo nke diacid karịa 10 carbon, ogologo oge ya na etiti oge. nke ọkara bụ izute definition nke ogologo carbon yinye naịlọn, mgbe ogologo diamine naanị 6 carbon, n'ihi na ihe onwunwe okpomọkụ eguzogide na n'ibu Njirimara na ndị ọzọ Njirimara karịa ogologo carbon yinye naịlọn, ubé ala karịa The izugbe nzube nylon PA6. na PA66, ya mere PA610 na PA612 na-ekewakarị dị ka ogologo carbon yinye nylon.

PA6 na PA66 nwere oke nnabata mmiri, na-ebute mgbanwe dị elu na nha ngwaahịa na ihe onwunwe yana okpomọkụ nhazi dị elu.Naịlọn yinye carbon ogologo nwere ike ime ka ụkọ carbon dị mkpụmkpụ n'ihi akụkụ ogologo methylene dị ogologo n'etiti otu amide dị n'akụkụ.Na mgbakwunye na ihe ndị bụ isi nke polyamides, ha na-egosipụtakwa njupụta ikwu dị ala, nnabata mmiri dị ala, nkwụsi ike akụkụ dị mma, nkwụsi ike kemịkalụ dị mma, ezigbo ọkụ eletrik, nguzogide corrosion, nguzogide abrasion, ike ike, ike ọgwụgwụ na nguzogide dị ala dị ịrịba ama.