Ko te ihirangi pungarehu he tohu nui ohydroxypropyl methylcellose. He maha nga kaihoko ka patai i te wa e maarama ana ratou i te hydroxypropyl methylcellolose: He aha te uara o te pungarehu? Hydroxypropyl methylcellulose me te iti o te pungarehu iti te tikanga o te tino pokekore; Ko te Cellulose me te ihirangi nui te tikanga nui he maha nga poke i roto i a ia, ka pa ki te whakamahi i te kaha o te taapiri. I te wa e whiriwhiri ana nga kaihoko i te methylcellulose, he maha nga wa e marama ana ki te ahi ka tahuna hei whakamatautau i nga ihirangi pungarehu o te cellulose. Engari ko tenei tikanga kitenga he tino mohio, na te mea he maha nga kaiwhakanao e taapiri ana i nga kaihoko miihini ki te cellulose. I runga i te mata, he iti rawa te pungarehu o te cellulose i muri i te wera, engari i te mahi, kaore i te tino pai te pupuri i te wai o te hydroxypropyl.
Na me pehea e kitea ai e tatou te ihirangi pungarehu o te hydroxypropyl methylcellulose? Ko te tikanga kitenga tika ko te whakamahi i te oumu parakore kia kitea.
Te pauna tātaritanga taputapu, te hinu kakara o te hinu kakara, te oumu hiko.
Nga mahi Whakamatau:
1) Tuatahi, makahia he 30ml porcelain i roto i te oumu nui-pāmahana me te tahuna i te (500 ~ 600)
2) pauna 1.0 g ohydroxypropyl methylcelloseI runga i te pauna tātari, makahia te tauira taapiri ki te riipene, ka tuu te waikawa i runga i te oumu hiko mo te chalibations, te taapiri i te waikawa o te ruuma (0.5-1-1.0 Na ka neke ki te oumu nui o te pāmahana, tahuna ki (500 ~ 600) ℃ mo te 1 haora te kaha o te oumu o te pāmahana.
Ko te aukati i te tatauranga ka kiia e rite ana ki te tauira (3):
M2-M1
Te toenga whakarangatira (%) = × 100 .........................................................................................................................................
m
I roto i te tātai: M1 - Ko te papatipu o te ururua, i G;
M2 - papatipu o te toenga me te ripeka, i G;
m - te papatipu o te tauira, i G.
Te wa tuku: Apr-25-2024