Focus on Cellulose ethers

Kedu ihe bụ Njirimara nke HPMC?

Ethers cellulose nke a na-ejikarị eme ihe na-agụnye HEC, HPMC, CMC, PAC, MHEC, wdg Nonionic mmiri-soluble cellulose ether nwere cohesiveness, dispersion kwụsie ike na mmiri na-ejigide ikike, na bụ ihe mgbakwunye bara uru maka ụlọ ihe. A na-eji HPMC, MC ma ọ bụ EHEC eme ihe n'ọtụtụ ciment ma ọ bụ gypsum dabeere na ya, dị ka ngwa ngwa masonry, ngwa ngwa ciment, mkpuchi ciment, gypsum, ngwakọta cimentious na milky putty, wdg, nke nwere ike ịkwalite mgbasa nke ciment ma ọ bụ ájá. na-emeziwanye Adhesion, nke dị ezigbo mkpa maka plasta, tile ciment na putty. A na-eji HEC na ciment, ọ bụghị naanị dị ka onye na-eme ka ọ bụrụ ihe na-eme ka mmiri na-ekpuchi mmiri, a na-ejikwa HEHPC mee ihe na nke a. A na-ejikarị MC ma ọ bụ HEC eme ihe yana CMC dịka akụkụ siri ike nke akwụkwọ ahụaja. Ọkara viscosity ma ọ bụ elu viscosity cellulose ethers na-ejikarị na akwụkwọ ahụaja glued ihe ụlọ.

Hydroxypropyl methylcelluloseHPMCa na-ejikarị eme ihe na mmepụta nke ime na mputa mgbidi putty ntụ ntụ na viscosity nke 100,000 cellulose, na akọrọ ntụ ntụ ngwa agha, diatom apịtị na ndị ọzọ na-ewu ihe onwunwe ngwaahịa, cellulose na a viscosity nke 200,000 a na-ejikarị, na na onwe-leveling na ndị ọzọ. ngwa agha pụrụ iche, cellulose nwere viscosity nke 400 na-ejikarị eme ihe. Viscosity cellulose, ngwaahịa a nwere ezigbo njigide mmiri, mmetụta dị mma na-eme ka ọ dị mma na ịdị mma. A na-eji HPMC eme ihe n'ọtụtụ ebe na ụlọ ọrụ ihe owuwu ụlọ ma jiri ya mee ihe na nnukwu ego. Enwere ike iji cellulose mee ihe dị ka onye na-azụ azụ, onye na-ejigide mmiri, thickener na ihe nkedo. Cellulose ether na-arụ ọrụ dị mkpa na ngwa agha agwakọta akọrọ nkịtị, ngwa agha mkpuchi mgbidi dịpụrụ adịpụ, ngwa agha na-edobe onwe ya, nrapado ntụ ntụ akọrọ, ngwa agha na-ejikọta tile, ntụ ntụ, n'ime na mputa mgbidi putty, ngwa agha mgbochi mmiri, nkwonkwo dị nro, wdg. , ha nwere mmetụta dị mkpa na njide mmiri, ọchịchọ mmiri, nkwụsi ike, nkwụsịtụ na ịrụ ọrụ nke usoro stucco.

Ngwaahịa HPMC Hydroxypropyl methylcellulose na-ejikọta ọtụtụ ihe anụ ahụ na kemịkal ka ọ bụrụ ngwaahịa pụrụ iche nwere ọtụtụ ojiji. Njirimara dị iche iche bụ ndị a:

◆Idobe mmiri: Ọ nwere ike idowe mmiri n'elu ebe ndị na-adịghị mma dị ka bọọdụ ciment na brik.

◆Fim-akpụ: Ọ nwere ike na-etolite a transperent, siri ike na nro film na magburu onwe mmanụ iguzogide.

◆Organic Solubility: Ngwaahịa a na-agbaze na ụfọdụ ihe mgbaze organic, dị ka ethanol / mmiri, propanol / mmiri, dichloroethane na ihe mgbaze nke mejupụtara abụọ organic solvents.

◆ Thermal gelation: The aqueous ngwọta nke ngwaahịa ga-etolite a gel mgbe ọ na-ekpo ọkụ, na kpụrụ gel ga-aghọ ihe ngwọta ọzọ mgbe jụrụ.

◆ Ọrụ elu: Nye ọrụ elu na ngwọta iji nweta emulsification achọrọ na colloid nchebe, yana nkwụsị nke oge.

◆Nkwusioru: Hydroxypropyl methylcellulose nwere ike igbochi ụmụ irighiri ihe siri ike idozi, si otú a na-egbochi nhazi nke precipitates.

◆Colloid na-echebe: Ọ nwere ike igbochi ụmụ irighiri mmiri na ụmụ irighiri mmiri ịchịkọta ma ọ bụ ịgbakọta ọnụ.

◆Adhesiveness: Ejiri ya mee ihe maka pigmenti, ngwaahịa ụtaba, na ngwaahịa akwụkwọ, ọ nwere ezigbo ọrụ.

◆ Mmiri Solubility: Ngwaahịa nwere ike agbaze na mmiri dị iche iche quantities, na kacha elu na-ejedebeghị nanị site viscosity.

◆Non-ionic inertness: Ngwaahịa bụ a na-abụghị ionic cellulose ether, nke na-adịghị ejikọta na metal salts ma ọ bụ ndị ọzọ ion na-etolite-apụghị soluble precipitates.

◆Acid-base kwụsie ike: adabara maka ojiji n'ime nso nke PH3.0-11.0.

◆ Enweghị ụtọ na enweghị isi, metabolism adịghị emetụta ya; eji dị ka ihe oriri na ihe mgbakwunye ọgwụ, ha agaghị eme ka ọ bụrụ metabolized na nri, ha agaghịkwa enye okpomọkụ.


Oge nzipu: Dec-28-2022
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