Kedu ihe bụ mmetụta nke nha nha na hydropopyythylthylthylthylthyl
Nchịkọta nke Hydroxyl Methylcellose: mesoo akwa cellyllose na 35-40 Celsius, na ogo nke polmerization nke alkali dị n'ime eriri dị iche iche achọrọ n'ime. Tinye eriri alkali n'ime, tinye propylene oxide na methyl chloride na usoro, yana otheraf na 50-80 Celsius C maka awa ise, oke nrụgide dị ihe dị ka 1.8MPA. Mgbe ahụ, tinye ego kwesiri ekwesi na acid acid na oxalic acid ruo na mmiri ọkụ na 90 Celsius C iji saa ahụ iji gbasaa olu ahụ. Dehydrate na centrifuge. Jiri mmiri sachaa ya ruo nchụpụ. Mgbe mmiri mmiri nke ihe dị ala karịa 60%, kpoo ya na mmiri iyi ikuku na-ekpo ọkụ na 130 Celsius C ruo mgbe mmiri dị ala dị ala karịa 5%.
HPMC usoro nke usoro ihe mgbatị ahụ na-eji toluene na Isropropanol dị ka ndị na-edozi. Ọ bụrụ na ịsa ahụ adịghị mma, ụfọdụ ndị obi ga-adị. Ugbu a, ogo nke hydropopyl methylcellose hpmclose dịgasị iche iche, ọnụahịa dịgasị iche iche, na-eme ya ike maka ndị ahịa ime nhọrọ ziri ezi. Nke a bụ nsogbu nke usoro ịsa ahụ, ọ naghị emetụta ya na nsogbu adịghị, HPMC adịghị ọcha isi na-egbu maramara, stachi na mmanya; HPMC HPMC nwere ike na-esi isi ihe dị ọcha niile, ọ bụrụgodi na ọ naghị atọ ụtọ, ọ ga-adị gị. Agbanyeghị, hydroxypyl Methylcelllose nke ọtụtụ ndị na-emepụta nwere isi siri ike na isi pungent. Ọdịdị ahụ adịchaghị mma.
A na-enweta hypromellose site na impregnating nụchara anụcha nke nwere mmiri na-egbu egbu, na-agbakwunye ihe na-egbu egbu, na-agbasa, na-azọcha, wdg iji nweta ngwaahịa emechara. A ga-enwe isi, yabụ ndị ọrụ nwere ike iji obi ike.
Oge post: Jun-09-2023