Yiziphi izinzuzo kanye nokungalungi kokufaka i-hydrotalcite kuma-calcium zinc stabilizers?

I-Hydrotalc iyinto eluhlaza ebaluleke kakhulu yeziqinisi ze-calcium zinc. I-Hydrotalc inesakhiwo nezakhiwo ezikhethekile, futhi izakhiwo zayo eziyisisekelo ziyi-alkalinity kanye ne-multi porosity, ngokusebenza okuyingqayizivele nokuhle kakhulu kanye nokusebenza kahle. Ingamunca ngempumelelo i-hydrogen chloride ekhishwa ngesikhathi sokuwohloka kwe-PVC, yehlise ijubane lomphumela wokuzivuselela we-hydrogen chloride ku-resin ye-PVC, futhi isebenze njengesimunca i-asidi, okwaziwa nangokuthi ukuzinza kokushisa. Ivame ukusetshenziswa njengesiqinisi sokushisa.
I-Hydrotalc inezinzuzo zokucaca okuhle, ukuvikela ukushisa, ukumelana nesimo sezulu, kanye nokucutshungulwa kalula. Ayingcoliswanga yi-sulfide, ayinabo ubuthi, futhi ingasebenza ngokubambisana neziqinisi zokushisa ezifana nensipho ye-zinc kanye nethini le-organic. Luhlobo oluthembisayo kakhulu lwesiqinisi sokushisa esingesona ubuthi.
Isakhiwo se-hydrotalcite sinongqimba olunesikhala esikhulu phakathi kwezingqimba esingu-0.76-0.79nm, futhi sinendawo enkulu ethile, okuvumela amaqembu ayo e-hydroxyl ukuthi asabele ngokugcwele ne-hydrogen chloride futhi sinomthelela omuhle kuzinzisi.
Izinkinga ze-hydrotalcite yilezi:
1. Ngokuphathelene nokuba mhlophe kokuqala, i-hydrotalcite ayinawo umthelela ekuthuthukisweni kombala wokuqala we-PVC kungaba yodwa noma ngokubambisana nohlelo lwe-calcium zinc. Ngemva kokuguga kuhhavini oshisayo ongu-180 ℃, umbala wesampula uvame ukuba bomvu.
2. Ngokuzinza kokushisa okubomvu kweCongo, isenzo esisodwa se-hydrotalcite singathuthukisa isikhathi sokuqina kokushisa kwe-PVC, futhi ngokwanda kwenani lokwengeza, isikhathi sokuqina kokushisa kwe-PVC sibonisa ukuthambekela okwandayo, kodwa ukwanda akubalulekile.
3. Uma kusetshenziswa inhlanganisela ye-hydrotalcite kanye nesistimu ye-calcium zinc njengesiqinisi sokushisa, isikhathi sokuqina kokushisa se-PVC sithuthukiswa kakhulu, futhi umkhuba wokwandisa isikhathi sokuqina kokushisa ngenani elandayo lokwengeza nawo uyaneliswa. Ngakho-ke, ama-dihydroxy metal hydroxide kufanele ahlukaniswe njengeziqinisi zokushisa ezisizayo zesikhathi eside, ezingandisa ngempumelelo isikhathi sokuqina kokushisa sesikhathi eside se-PVC. Ngakho-ke, lapho kuhlanganiswa iziqinisi zokuqina ze-calcium zinc, i-hydrotalcite ingenye yezinto zokusetshenziswa ezibalulekile.