1.1 Chemical anti-aging agent .
P-phenylenediamine anti-aging agents hi dialkyl p-phenylenediamine, di-aryl-phenylenediamine leh alkyl aryl p-phenylenediamine te chu p-phenyleninediamine. a dialkyl p-phenediamine agents te an ni a, an lo awm tawh a ni. Anti-aging agent 4030 hi a darh awlsam a, rubber-ah a inthiar theih a, a dosage a lian chuan frosting problem a nei lo. Vulcanization a ti chak thei a, mixed rubber-a hal hun a ti tawi thei bawk. static ozone aging laka invenna tha tak a ni a, chu chu anti-aging agent A bik takin pawn lama rubber leh cable, rubber pipe leh tape te ang chi, hun rei tak chhunga dinhmun nghet lo dinhmun hnuaia awm reng tur. alkyl aryl p-phenylenediamine anti-aging agents chi hrang hrangte chu 4010, 4010Na, 4020 leh H. Antiager Kum upa lam leh flexible crack hian venhimna tha tak a nei a, hot oxygen tarna leh khaw lum leh khaw vawt hian venhimna tha tak a nei bawk a, base metal hian passivaton effect a nei a, NR, BR, SBR, NBR, leh CR, leh paraffin (a bik takin branched chain wax leh microcrystalline wax inzawmkhawm nen) hman a tha a, hman a tichak thei bawk a, hei hian anti-aging agent {29} te chu a tichak thei a ni. Anti-aging Agent 4020 hian tui lakchhuahna a do tha zawk a, hun rei tak chhunga venhimna a neih theihna tur a thlen thei.