Pali mitundu yambiri ya mphira pamsika, monga mphira wachilengedwe, mphira wa styrene-butadiene, mphira wa butyl, mphira wa nitrile, mphira wa butadiene ndi mphira wokonzedwanso, etc. Mitundu yosiyanasiyana ya mphira imapanga zinthu zosiyanasiyana za mphira, popanga zinthu za rabara, monga kugwiritsa ntchito molakwika zida zothandizira kumabweretsa zotayika zosafunikira. Masiku angapo apitawo, kasitomala anabwera kudzafunsa chifukwa kupanga mankhwala mphira ndi kutsitsi buluu, amene amayamba ndi kusankha molakwika mphira kapena chilinganizo molakwika, akatswiri athu ndi kotero kuti adziwitse makasitomala, ambiri kutsitsi buluu makamaka chifukwa cha asidi kwambiri, pali milandu angapo.

1, plasticizer: plasticizer yowonjezeredwa popanga zinthu zobwezerezedwanso za mphira yakhala ndi oxidized musanasakanizidwe, kotero mu rabara wotenthedwa umapopera buluu; mafuta onunkhira ofewa a hydrocarbon aakulu (monga mafuta ofewetsa labala, ndi zina zotero) owonjezera kwambiri komanso osavuta kupanga mankhwala a mphira opopera buluu.

2, kaboni wakuda: popanga kaboni wakuda wakuda m'mamolekyu akulu amafuta onunkhira samatenthedwa kwathunthu, kugula kwa kaboni wakuda woterowo wowonjezedwa pamitengo ya rabara kumakhala kosavuta kupopera buluu.

3, antioxidant: popanga zinthu za mphira kuti awonjezere ndikugwiritsa ntchito antioxidant molingana ndi kuchuluka kwa mphira ndi mtundu wa zinthu za mphira, antioxidant kuwonjezera mtundu wakuda kwambiri kumapangitsanso kuti zinthu za mphira zizithira buluu, kotero kuchuluka koyenera kwa antioxidant.

4, kutentha vulcanization: chifukwa cha mankhwala mphira kuwonjezera zosavuta buluu zina, kuwonjezera kutentha kusakaniza ndi mkulu, zosavuta kupanga vulcanized mankhwala kutsitsi buluu.

5, mphira kusanganikirana m'njira: kuwonjezera pa zipangizo wothandiza kusanganikirana chifukwa cha kusakaniza osagwirizana wa mphira osakaniza ndi ndende ya zinthu zina wothandiza ndi okwera kwambiri kuchititsa padziko mankhwala mphira kutsitsi buluu.

Pewani mphira kupopera utawaleza: chilinganizo mpweya wakuda kukhala wololera; vulcanization dongosolo kukhala pang'ono mopitirira muyeso, yesetsani kuwonjezera mafuta ochepa, utomoni, stearic acid, etc.