Ta yaya warin hydroxypropyl methylcellulose zai iya shafar ingancin?

Waɗanne tasirin ƙanshin ƙanshi a kan hydroxypypyl methylcellulose:

Hythesis na Hydroxypropyl methylcelous: Bi da sel auduga mai kyau tare da 350 ° C na rabin sa'a yana cikin riberization da ake buƙata a ciki. Put the alkali fiber into the etherification kettle, add propylene oxide and methyl chloride in sequence, and etherify at 50-80°C for 5 hours, the maximum pressure is about 1.8MPa. Sa'an nan kuma ƙara adadin da ya dace na hydrochloric acid da oxalic acid zuwa ruwan zafi a 90 ° C don wanke kayan don faɗaɗa ƙarar don faɗaɗa ƙarar. Bushewa a cikin centrifuge. Wanke da ruwa har zuwa tsaka tsaki. Lokacin da danshi abun ciki na kayan ya ƙasa da 60%, bushe shi da rafi mai zafi a 130 ° C har sai danshi yana ƙasa da 5%.

HPMC ta samar da hanyar da za a samar da ita ta hanyar amfani da Toluene da ISOPpANOL kamar yadda sauran ƙarfi. Idan wanka ba shi da kyau, wasu ma isasshen kamshi zai ci gaba. A halin yanzu, ingancin hydroxypyl hydroxropyl methylcellulose hpmc ya bambanta sosai, kuma farashin ya bambanta sosai, yana wahalar da abokan ciniki su zaɓi zaɓi. Wannan shine matsalar Wanke, ba ta tasiri ga amfani kuma babu matsala, tsarkakakken HPMC kada ya yiwa ammonia, sitaci da barasa; Zanga-zina na iya jin ƙanshi sau da yawa yana jin ƙanshi kowane irin kamshi, koda kuwa yana da daɗi, zai ji nauyi. Duk da haka, hydroxypoyl methylcellopyl methylcelrose ya samar da masana'antun masana'antun suna da ƙarfi mai ƙarfi da ƙanshi mai ƙanshi. Ingancin ba shakka ba har zuwa par.

Ana samun hypromlochose ta hanyar impregnating Reporn auduga don samun abubuwan da ake amfani da shi da eRitine, bushewa, da sauransu don samun samfuran da aka gama. Da kyau, za a sami wari, don haka masu amfani zasu iya amfani da shi tare da amincewa.