Hydroxypylththththththylcelllose (hpmc)bụ nke na-abụghị ionic, mmiri na-agbanye mkpụrụ cellulose agwakọta ether. Ọdịdị na-acha ọcha na-acha odo odo ma ọ bụ ihe na-acha odo odo, na-enweghị isi, na-enweghị atụ, na-adịghị egbu egbu, na mmiri jupụtara na mmiri iji mepụta mmiri dị larịị, na transperent na ngwọta na ngwọta na viscus. Otu n'ime akụrụngwa kachasị mkpa nke hydropyythylthyl na ngwa bụ na ọ na-abawanye viscosity mmiri mmiri. Mmetụta dị iche iche na-adabere na ogo polymerization (dp) nke ngwaahịa ahụ, ịta mkpụrụ ndụ cellulose na agwọ, ọnụego osisi, na ọnọdụ okpomọkụ. Ihe ndị ọzọ.
01
Ụdị mmiri mmiri nke HPMC
Na mkpokọta, enwere ike igosipụta nchekasị nke mmiri na Shear Flow ka ọrụ nke ọnụego shiee ƒ (γ), ọ bụrụhaala na ọ bụghị oge. Dabere n'ụdị ƒ (γ), a ga-ekewa mmiri n'ụzọ dị iche iche, ya bụ: mmiri ọhụrụ: mmiri ọhụụ, dilustic na mmiri purham na bọlbụ brọtham.
A na-ekewa ethers na-ekewa ụzọ abụọ: otu bụ ihe na-abụghị ionic sel sel na nke ọzọ bụ ionic cellulose ether. Maka Rhiology ụdị ụdị ndị a. SO na ok et al. duziri ọmụmụ ihe zuru oke na usoro ihe na hydroxyethythyth cellosethythythythythythylythylythyth ọzịza. Nsonaazụ ahụ gosiri na abụọ na-abụghị nke ngwọta sellulus na ionic selluluse elùm bụ pseudoplastic. Fịga, ya bụ Newtonan na-asọ, na-abịakwute mmiri Newtontian naanị na obere mgbakwunye. Ihe pseudoplastity nke hydroxypylthylthylthylthylthylcelllose Ngwọta dị mkpa na ngwa. Dịka ọmụmaatụ, mgbe etinyere ya na comesings, n'ihi ihe njiri mara nke ihe ngwọta nke ihe ngwọta na mmụba nke ọnụego ya, nke na-eme ka mmiri na-acha uhie uhie . Mmetụta ahụ buru ibu; Mgbe izu ike, viscosity nke ihe ngwọta dịtụ buru ibu, nke na-egbochi nkwụnye nke ụmụ irighiri ihe.
02
Usoro nnwale HPMC
Ihe ngosi dị mkpa iji tụọ mmetụta dị iche iche nke hydroxypyl Methylculse bụ ihe na-apụta ìhè nke ọdịbe. Thezọ nha anya nke ihe viscits na-etinyekarị usoro viscitty usoro viscitty, usoro ịhụ ụzọ na-ahụ maka viscositty na usoro viocitit.
Ebe: bụ viscosity, MPA s; K bụ onye na-ahụ anya na-aga n'ihu; d bụ njupụta nke ihe nlele na 20/20 Celsius C; T bụ oge maka ihe ngwọta ị ga - agafe na akụkụ nke nhụju ahụ na akara ala, s; A na-atụle oge ọkọlọtọ mmanụ na-asọ site na ndị na-elegharị anya.
Agbanyeghị, usoro iji tụọ site na ngọngọ site na ngọngọ na-enye nsogbu. Viscolọ nke ọtụtụEversgbọala CellugulO siri ike inyocha site na iji vicom virus n'ihi na usoro ndị a nwere oke ihe na-enweghị isi nke a na-achọpụta mgbe ana-egbochi ndị na-eme nchọpụta. Therefore, most manufacturers use rotational viscometers to control the quality of hydroxypropyl methylcellulose. A na-ejikarị nje Briokcrifield na mba ọzọ, a na-eji NDJ viacteters na China.
03
Na-emetụta ihe viscosity HPMC
3.1 Mmekọrịta na ogo nchịkọta
Mgbe paramita ndị ọzọ na-agbanwe agbanwe, viscosity hydroxypyl methylcellopy na ogo nke polymellization (dp) ogologo ma ọ bụ akwara nkọ ma ọ bụ olu molecular. Mmetụta a ka a na-akpọsa ihe ndị ọzọ n'okwu nke polymerization karịa n'ihe banyere ogo nke polymerization.
3.2 Mmekọrịta dị n'etiti viscosit na ịta
Viccosite nke hydroxypropyythl methylcelllose na-abawanye na mmụba nke ịta ngwaahịa a na agwọ. Ọbụna obere mgbanwe ga-ebute mgbanwe dị ukwuu na viscosity. Site na viscosite viscosity nke hydroxypyl methylculose mmetụta nke itinye uche n'ihe ngwọta na viscosity nke ihe ngwọta bụ ihe doro anya.
3.3 Mmekọrịta dị n'etiti viscosis na Shear
Ngwọta Hydroxypyl Methylcelllose Ash nwere akụ nke shirning. A na-eji hydroxypylththylcelllose dị iche iche n'usoro vissis dị iche iche, na viscosis ya na ụdị Shear dị iche iche. Nsonaazụ bụ ihe ndị a dị ka egosiri na ọnụ ọgụgụ ahụ. Na obere oke mmiri, viscosity nke hydroxypropyythyl methylcelllose agbanwebeghị. Site na mmụba nke ọnụego ya, viscosity hydroxypyl Methylcellose na vine na-ahụ anya dị elu, ebe ngwọta nwere viccosity dị ala na-agbadata n'ụzọ doro anya.
3.4 Mmekọrịta dị n'etiti viscosity na ọnọdụ okpomọkụ
Nje viscosity nke hydroxypropyl methylcelllose a na-emetụta oke okpomọkụ. Ka ọnọdụ okpomọkụ na-abawanye, viscosity nke ihe ngwọta na-ebelata. Dị ka egosiri na ọnụ ọgụgụ ahụ, a na-akwadebe ya n'ime ihe ngwọta nke 2%, na mgbanwe nke viscosity na mmụba nke ọnọdụ okpomọkụ na-tụọ.
3.5 ndị ọzọ na-emetụta ihe
Ihe ngwọta na ihe ngwọta na-emetụtakwa site na ihe ngwọta na ihe ngwọta, ph uru nke ihe ngwọta ahụ, na ndọtị microbial. Mgbe ọ bụla, iji nweta ọnụ ahịa viscosity arụmọrụ ma ọ bụ belata ọnụahịa nke iji, dị ka ịgbakwunye ụrọ rhiology, stay etherymen, stay na-agbanwe agbanwe, na-agbado mmiri nke hydroxypylthylthylthylthylthylthyl. , na electrolytes dị ka chloride, bride, phosphate, nitrate, wdg. Ihe mgbakwunye ndị a agaghị emetụta akụrụngwa viscosit nke viscosit nke ọdịbendị, kamakwa emetụta ngwa ngwa ndị ọzọ nke hydypylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthylthyl methylcellyl methylcellose dị ka njigide mmiri. , Sag eguzogide, wdg.
Ọ fọrọ nke nta ka ọ bụrụ acid na alkali na alkali na-adịghị emetụta ya, ọ ga-eguzogide nke acid na-adịghị ike, actic acid, phosphoric acid , boric acid, citric acid, wdg, acid acid ga-ebelata viscosity. Ma soustic soda, potassium hydroxide, mmiri wayo, wdg. E jiri ya tụnyere eyers cellugul ndị ọzọ,hydroxypylthththththylcellloseNgwọta Osisi nwere ezigbo nkwụsi ike, isi ihe kpatara ya bụ na nnọchi ahụ na-ejikọ aka na-egbochi ya, ebe ọ bụ na a na-ejikọ aka na-enweghị isi na-enweghị atụ, nke na-enweghị ngwa ngwa na-enweghị isi Na mmebi nke cellulose ether molet na yinye ọ na-arụ ọrụ. Ime ihe ahụ bụ na viscosity nke akụkụ ala ahụ mbelata. Ọ bụrụ na ọ dị mkpa ịchekwa ihe ngwọta nke hydroxyylthylthylthylthylthylthylthylthyl ogologo oge, a na-atụ aro ka itinye ego nke onye nnọchite ọgwụ antifungal ka na-adịghị agbanwe agbanwe. Mgbe ị na-ahọrọ ndị na-alụ ọgụ na-alụ ọgụ, ma ọ bụ fungidides, ị ga-elebara ahụ mmadụ anya, ma họrọ ihe na-enweghị atụ, ndị ọrụ Careard64 na ngwaahịa ndị ọzọ. nwere ike igwu ọrụ kwekọrọ.
Oge Post: APR-28-2024