PPDA

Nta

PPDA yog xim dawb rau lub teeb liab liab liab siv lead ua, nws cov alkalinity tsis muaj zog tshaj ammonia, me ntsis muaj zog dua aniline, thiab nws yooj yim rau oxidized.

Daim ntawv thov

Feem ntau siv rau hauv kev tsim cov azo dyes thiab sulfide dyes, thiab roj hmab antioxidants. Nws kuj tuaj yeem siv los ua raw khoom rau roj av polymerization inhibitors. Hauv kev lag luam ntawm polymer, PPDA feem ntau yog siv los tsim Kevlar 1414 thiab polyimide.