Kedu ihe bụ akụrụngwa nke Hpmc?

Hydroxypyl Methymerl) bụ posmelel nke nwere ọtụtụ ngwa na ụlọ ọrụ dị iche iche na ụlọ ọrụ dị iche iche, gụnyere ọgwụ, ihe owuwu, nri, na ihe ịchọ mma. Akụrụngwa eji eme ihe na mmepụta nke Hpmc sitere na akụrụngwa nke eke na nke mmeghari.

HPMC bụ usoro selnisnitik nke cellulose, polymer eke nke dị na mgbidi cells. Akụrụngwa na-emepụta nke Hpmc gụnyere cellulose na proflene oxide. A na-akọwapụta akụrụngwa na usoro synhesis n'ụzọ zuru ezu dị n'okpuru:

1. Celllose:

Isi mmalite: Isi akụrụngwa nke Hpmc bụ cellose, nke e wepụtara eriri osisi ma ọ bụ eriri owu. Osisi pulp bụ ebe kachasị anya n'ihi ụba ya na nke dị ọnụ.
Ikewa: kewaa cellose site na iji ihe eji eme ihe na-eji usoro kemịkal dị iche iche. Osisi pulp a na-emeso ndị na-adịghị emejupụta adịghị ọcha ma wepụ eriri cellulose.

2.

Isi Iyi
Productionzọ: A na-emepụta Oxide Oxide site na usoro kemịkal a na-akpọ chlorohydrin ma ọ bụ akụkọ. N'ime usoro a, ndị na-ekwu okwu na chlorine ma ọ bụ hydrogen peroxide ka etopụta propylene.

3. Mmeghachi omumethylation:

Eliletification: njikọta nke HPMC na-emetụta ogo nke cellulose na propylene oxide. A na-akpọkwa usoro a methylation, nke a na-ewebata ìgwè mmadụ na-emegharị n'ime ụlọ ọrụ sellose.
Ọgwụ Alkali: na-emeso Alkali (na-abụkarị sodium hydroxide) iji mee ka Hydroxy dị iche iche rụọ ọrụ. Nke a na - eme ka ha na - emeghachi omume n'oge mmeghachi omume ndị na - esote ya na propylene oxide.

4. Ogo nke methylation:

Njikwa: Jikwaa ogo nke methylation (DS) n'oge mmeghachi omume iji nweta ihe ndị achọrọ nke HPMC. Ogo nke dochie anya ndọkpụ, viscosity, na Njirimara ndị ọzọ nke ngwaahịa ikpeazụ.
Hydroxypylation:

Mmeghachi omume: A na-emegharị emegharị arụ ọrụ na usoro proplene nke dị n'okpuru ọnọdụ achịkwa. Nke a na - arụpụta na otu hydropyyyl dị ka ụda cellulose.
Okpomoku na nrụgide: Jiri nlezianya na-achịkwa ọnọdụ mmeghachi omume, gụnyere okpomọkụ na nrụgide, iji hụ arụmọrụ arụmọrụ yana ogo ngwaahịa.

5. Nchikota na ịsacha:

Nnwere mwepụ acid: Mgbe mmeghachi omume, ngwaahịa a na-ejikọta ya na acid iji wepu nnukwu ntọala.
Stingzacha: A na-asa Hpmc iji wepu adịghị ọcha, ihe ndị na-adịghị na-agbagha, na ngwaahịa. Nzọụkwụ a dị oke mkpa iji nweta ngwaahịa ọcha ikpeazụ.

6. Ihicha:

Iwepu mmiri: Nzọụkwụ ikpeazụ bụ nkụ hpmc iji wepu mmiri ọ bụla fọdụrụ. Nke a na-etolite HPMC n'ụdị ntụ ntụ, nke enwere ike ịhazi ma jiri ya rụọ ọrụ n'ọtụtụ ngwa.

Akụrụngwa nke HPMC tumadi gụnyere eriri ahịhịa ma ọ bụ eriri owu na proplete oxide sitere na petrochemical proplene. Usoro synhesis gụnyere metylation, hydroxyyyylop, ịsachapụ na nkụ, ọnọdụ mmeghachi omume na-eji nlezianya na-achịkwa iji nweta ihe ndị chọrọ iji nweta ihe ndị ọ chọrọ iji nweta ihe ndị a chọrọ. Vanisatifiedity HPMC ị ga na ihe okike kemịkal ya pụrụ iche, na-eme ya ihe bara uru n'ọdịdị dịgasị iche iche.