Manifaktirè lyophilizer yo te klase paramèt kle yo ki afekte lyofilizasyon materyèl, sitou ki gen ladan 4: tanperati eutektik, tanperati etektik, tanperati efondreman, ak tanperati tranzisyon vè.
The eutectic temperature refers to the temperature at which the moisture in the material is completely frozen into ice crystals. The principle of vacuum freeze-drying technology is the process of directly sublimating water from a solid state to a gaseous state without going through the liquid state. In this process, only two phases are transformed, that is, the solid state is converted into a gaseous state.
If the material is not completely frozen and some liquid material is retained during the freeze-drying and pre-freezing process, the phenomenon of "bubbling" will occur in the sublimation drying stage, that is, the boiling phenomenon of the liquid material under low pressure. The material is reconstituted again, the internal structure is not uniform, and some materials are sticky, which eventually leads to poor resolubility of the product. Therefore, in the pre-freezing stage, the temperature should be lowered below the eutectic temperature, and the moisture in the material should be completely frozen into ice crystals without the existence of liquid materials.
Tanperati eutektik yo rele tou pwen eutektik la. Dlo gen yon pwen fizyon fiks, men solisyon an pa fè sa. Solisyon an apre lè w konjele anjeneral pa fonn nan yon tanperati fiks, men kòm tanperati a piti piti ogmante, kantite a nan kristal piti piti diminye. , jiskaske solid final la konplètman fonn. Tanperati kote yon likid parèt lè fizyon an kòmanse rele pwen k ap fonn. Pou yon solisyon, li se pwen an fonn komen nan solute a ak sòlvan an. Tanperati sa a rele tanperati eutektik.
Tanperati efondreman an, ke yo rele tou tanperati efondreman, se pou kèk materyèl friz-seche. Lè tanperati friz la -materyèl sèk la piti piti ogmante, frigidité li piti piti diminye. Lè tanperati a rive nan yon sèten valè kritik, frigidité li pa ase pou kenbe estrikti twa dimansyon materyèl la, sa ki lakòz materyèl la kòmanse tonbe. Tanperati kritik sa a rele materyèl la. tanperati efondreman an.
Tanperati tranzisyon an vè refere a tanperati tranzisyon an vè nan konsantre maksimòm nan frizè nan materyèl la. Anplis de fòmilasyon materyèl la, tanperati tranzisyon an vè tou gen rapò ak estrikti a, tanperati pre-konjelasyon an, ak vitès materyèl la.
