4,4'-Diphenylmethane diisocyanate(CAS#101-68-8)

Gabatarwa

Diphenylmethane-4,4'-diisocyanate, kuma aka sani da MDI. Yana da kwayoyin halitta kuma nau'in mahadi ne na benzodiisocyanate.

inganci:

1. Bayyanar: MDI ba shi da launi ko rawaya mai ƙarfi.

2. Solubility: MDI yana narkewa a cikin kaushi na halitta kamar chlorinated hydrocarbons da aromatic hydrocarbons.

Amfani:

Ana amfani dashi azaman albarkatun ƙasa don mahaɗan polyurethane. Yana iya amsawa da polyether ko polyurethane polyols don samar da elastomer na polyurethane ko polymers. Wannan kayan yana da nau'ikan aikace-aikace masu yawa a cikin gini, motoci, kayan ɗaki, da takalma, da sauransu.

Hanya:

Hanyar diphenylmethane-4,4'-diisocyanate shine yawanci don amsa aniline tare da isocyanate don samun isocyanate na tushen aniline, sa'an nan kuma ta hanyar maganin diazotization da denitrification don samun samfurin da aka yi niyya.

Bayanin Tsaro:

1. Gujewa tuntuɓa: Ka guji hulɗa da fata kai tsaye kuma a sanye da kayan kariya masu dacewa kamar safar hannu, tabarau da kayan kariya.

2. Samun iska: Kula da yanayi mai kyau yayin aiki.

3. Adana: Lokacin da ake adanawa, sai a rufe shi kuma a kiyaye shi daga tushen wuta, wuraren zafi da wuraren da ake samun wutar lantarki.

4. Sharar gida: Ya kamata a kula da sharar yadda ya kamata a zubar da ita, kada a zubar da ita yadda ake so.

Lokacin sarrafa abubuwan sinadarai, yakamata a kula dasu cikin tsayayyen tsarin aikin dakin gwaje-gwaje da jagororin aminci, kuma daidai da dokoki da ƙa'idodi masu dacewa.