Waa maxay faraqa u dhexeeyahydroxypropyl methylcellulose(HPMC) oo leh ama aan lahayn S?
1. HPMC waxa loo qaybiyaa nooca degdega ah iyo nooca kala firdhinta degdega ah
Nooca kala firdhinta degdega ah ee HPMC waxaa lagu dhejiyay xarafka S. Inta lagu jiro habka wax soo saarka, waa in lagu daraa glyoxal.
Nooca degdega ah ee HPMC kuma daro wax xarfo ah, sida "100000" waa "100000 viscosity nooca kala firdhinta degdega ah ee HPMC".
2. S ama S la'aanteed, astaamaha way kala duwan yihiin
HPMC oo si degdeg ah u kala firdhisa ayaa si degdeg ah ugu faafta biyo qabow waxayna ku baaba'daa biyaha. Waqtigan xaadirka ah, dareeruhu ma laha dheellitir, sababtoo ah HPMC waxaa lagu kala firdhiyaa biyaha oo keliya, mana jiro kala firdhis dhab ah. Qiyaastii laba daqiiqo ka dib, dheellitirka dareeruhu si tartiib tartiib ah ayuu u kordhaa, isagoo samaynaya dareere dhegdheg leh oo hufan. Colloid qaro weyn.
HPMC degdeg ah ayaa si degdeg ah ugu faafi kara biyaha kulul qiyaastii 70°C. Marka heerkulku hoos u dhaco heerkul gaar ah, dheellitirku si tartiib tartiib ah ayuu u soo muuqdaa ilaa uu samaysmo kolloid fiiqan oo hufan.
3. Haddii S la haysto ama aan la haysan, ujeedadu way ka duwan tahay
HPMC degdeg ah waxaa loo isticmaali karaa oo keliya budada putty iyo hoobiyaha. Koolada dareeraha ah, dahaarka iyo agabka nadiifinta, isku-urursi ayaa dhici doona mana la isticmaali karo.
HPMC oo si degdeg ah u kala firdhisa waxay leedahay adeegsiyo kala duwan. Waxaa loo isticmaali karaa budada putty, hoobiye, xabagta dareeraha ah, rinjiga, iyo alaabada dhaqidda iyada oo aan wax ka hor imaanayn.
Habka kala dirida
1. Qaado xaddiga biyaha kulul ee loo baahan yahay, ku rid weel oo ku kululee ilaa heerkul ka sarreeya 80°C, oo si tartiib tartiib ah ugu dar badeecadan adigoo si tartiib ah u walaaqaya. Cellulose-ku wuxuu marka hore dul sabaynayaa biyaha, laakiin si tartiib tartiib ah ayaa loo kala firdhiyaa si uu u sameeyo isku-darka isku midka ah. Qabooji xalka adigoo walaaqaya.
2. Ama ku kululee 1/3 ama 2/3 biyaha kulul heerkul ka sarreeya 85°C, ku dar cellulose si aad u hesho biyo kulul, ka dibna ku dar inta hartay ee biyaha qabow, sii wad walaaqidda, oo qabooji isku darka ka dhashay.
3. Cellulose waxay leedahay tiro shabag ah oo khafiif ah, waxayna u jirtaa sidii hal qayb yar oo ku jirta budada si isku mid ah loo walaaqay, waxayna si degdeg ah u milmaysaa marka ay la kulanto biyaha si ay u samayso dheellitirka loo baahan yahay.
4. Si tartiib ah oo siman ugu dar cellulose heerkulka qolka, oo sii wad walaaq inta lagu jiro habka ku darista ilaa xal hufan laga sameeyo.
Maxay yihiin arrimaha saameeya haysashada biyaha ee hydroxypropyl methylcellulose?
Haynta biyaha ee badeecada hydroxypropyl methylcellulose HPMC lafteeda waxaa badanaa saameeya arrimaha soo socda:
1. Isku-dhafka unugyada ether HPMC
HPMC-ga si isku mid ah u falceliyay wuxuu leeyahay qayb isku mid ah oo kooxaha methoxy iyo hydroxypropoxy ah iyo haynta biyaha oo sareysa.
2. Heerkulka jelka kulaylka ee Cellulose ether HPMC
Heerkulka jelka kulaylka oo sarreeya, ayaa sii kordhaya heerka haynta biyaha; haddii kale, heerka haynta biyaha oo hooseeya.
3. Cellulose ether HPMC viscosity
Marka uu kordho viscosity-ga HPMC, heerka haynta biyuhu sidoo kale wuu kordhaa; marka viscosity-gu gaaro heer gaar ah, kororka heerka haynta biyuhu wuxuu u janjeeraa inuu noqdo mid jilicsan.
Qadarka dheeraadka ah ee Cellulose ether HPMC
Inta badan ee lagu daray cellulose ether HPMC, heerka haynta biyaha ayaa sarreeya, saameynta haynta biyahana way ka sii fiican tahay.
Inta u dhaxaysa 0.25-0.6%, heerka haynta biyuhu si dhakhso ah ayuu u kordhaa marka tirada lagu daray ay korodho; marka tirada lagu daray ay sii korodho, isbeddelka sii kordhaya ee heerka haynta biyuhu wuu gaabiyaa.
Waqtiga boostada: Oktoobar-17-2022