Ngwa nke cellulose ether na mgbidi mgbidi na putty

1. Nchịkọta nke cellulose ether

Cellulose ether bụ klaasị nke mmiri-soluble ma ọ bụ mmiri na-agbasasị ogige polymer nke kpụrụ site kemịkalụ mgbanwe dabere na eke cellulose. Common cellulose ethers na-agụnye hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), wdg Ndị a cellulose ethers nwere ezi ndim, mmiri njigide, lubrication, film-akpụ na ndị ọzọ Njirimara, n'ihi ya, ha na-ọtụtụ-eji na-ewu ụlọ. ihe.

2. Ọrụ cellulose ether na putty

Melite arụmọrụ ihe owuwu nke putty

Cellulose ether na-eme ka akụrụngwa rheological nke putty dịkwuo mma, nke mere na arụ ọrụ na nhazi ọkwa nke putty nwere ike imeziwanye, na-eme ka ọ dị mfe itinye na ọkwa. Karịsịa n'ime nnukwu ihe owuwu, ihe onwunwe nke cellulose ether nwere ike ime ka putty dị mma na-agbaso mgbidi ahụ, belata nkwụsị, ma hụ na nkwụsi ike nke àgwà ụlọ.

Melite njide mmiri

Ngwunye putty kwesịrị ịnọgide na-enwe ụfọdụ mmiri mmiri n'oge usoro ihe owuwu iji hụ na ịdị n'otu na ntinye nke usoro ihicha na-esote. Mkpụrụ ndụ cellulose ether nwere ike ịmịkọrọ mmiri buru ibu ma mepụta netwọk mmiri mmiri na putty, na-ebelata ọnụ ọgụgụ evaporation nke mmiri putty, si otú ahụ na-eme ka njigide mmiri nke putty dịkwuo mma. Njide mmiri a na-eme ka putty ghara ịgbawa ma ọ bụ ntụ ntụ mgbe a na-arụ ya n'okpuru okpomọkụ dị elu ma ọ bụ ọnọdụ akọrọ, na-agbatị oge ihe owuwu ahụ na-emeghe ma hụ na ịdị mma nke oyi akwa.

Kwalite ike nkekọ

Ịba ụba ọdịnaya nke cellulose ether nwere ike ime ka adhesion nke putty dịkwuo mma ma hụ na etinyere nke ọma n'elu ala. Mgbe etinyere putty, cellulose ether nwere ike ọ bụghị naanị na-eme ka ike nke putty dịkwuo elu, kamakwa ọ na-enye ọkwa nke ntanye n'oge usoro ihicha iji gbochie oyi akwa ahụ ka ọ ghara ịdaba ma ọ bụ na-agba ọsọ. Nke a dị mkpa karịsịa maka ebe dị mma na ntọala ndị na-adịghị anabata ya n'ihi na ether cellulose na-enye ihe mgbakwunye ọzọ.

Jikwaa ọsọ ihicha

Cellulose ether nwere ike ịhazigharị ọsọ ihicha nke putty ka oyi akwa putty wee kpọọ nkụ nke ọma, si otú a na-egbochi mgbawa nke ọma site na mfu mmiri ngwa ngwa n'elu. Maka owuwu nke putty multi-layer, ngwa ngwa ihicha kwesịrị ekwesị dị mkpa karịsịa, nke na-enyere aka hụ na adhesion n'etiti ọkwa na mmetụta zuru ezu.

Melite arụmọrụ mgbochi-sagging

Na mgbidi kwụ ọtọ ma ọ bụ n'uko ụlọ, ike ndọda na-emetụta putty n'ụzọ dị mfe ma nwee nsogbu nke ịda mbà na nkwụsị. Mmetụta siri ike nke cellulose ether nwere ike imeziwanye viscosity na nkwụsi ike nke putty nke ọma, gbochie ihe ahụ site na ịsacha n'ihi ike ndọda, ma hụ na nkesa nke putty dị n'otu.

3. Ụdị isi na nhọrọ nke cellulose ethers

Ụdị cellulose dị iche iche nwere mmetụta dị iche iche na putty, ọ dịkwa ezigbo mkpa ịhọrọ ụdị ether cellulose kwesịrị ekwesị. Ndị a bụ ọtụtụ cellulose ethers a na-ejikarị na njirimara ha:

Hydroxypropyl methylcellulose (HPMC): Ọ nwere ezigbo mkpụkọ, njigide mmiri na ihe na-emepụta ihe nkiri na a na-ejikarị ya eme ihe n'ịrụ ụlọ. HPMC nwere ike imeziwanye ihe nrụpụta na imepụta ihe nkiri nke putty, mee ka putty dị nro mgbe etinyere ya, ma melite nrapado na ire ụtọ nke putty.

Hydroxyethyl cellulose (HEC): A na-ejikarị ya na sistemụ mmiri, nwere ikike nchịkwa dị mma na nke rheology, a na-ejikarị ya eme ihe na mgbidi ime ụlọ na mkpuchi mmiri. HEC nwere mmetụta nkwalite dị ịrịba ama na ọkwa mkpuchi nke putty, mana njide mmiri ya dị ntakịrị ala karịa HPMC.

Hydroxypropyl cellulose (HPC): HPC nwere nnukwu viscosity na ezigbo nkwụsi ike, ma dabara maka oge nwere nnukwu ihe achọrọ maka mgbochi sagging. Ịtinye ego HPC kwesịrị ekwesị na putty nwere ike imeziwanye arụmọrụ mgbochi na ike nke putty.

4. Uru ngwa na atụmanya ahịa nke cellulose ethers

Uru ngwa nke cellulose ethers na putty dị ịrịba ama, egosipụtara na akụkụ ndị a:

Ịchekwa ọnụ ahịa: Cellulose ethers nwere ike imeziwanye arụmọrụ arụ ọrụ nke putty nke ọma, belata ọnụ ọgụgụ nke reworks, wee si otú ahụ belata ihe onwunwe na ụgwọ ọrụ.

Nchekwa gburugburu ebe obibi: Cellulose ethers bụ ihe sitere n'okike nke sitere na ihe ndị a na-emegharị ọhụrụ, nwere ezigbo nchekwa gburugburu ebe obibi, nke na-adịghị egbu egbu na ahụ mmadụ, na-enyere aka igbo mkpa nke ihe owuwu nke oge a maka nchebe gburugburu ebe obibi akwụkwọ ndụ akwụkwọ ndụ.

Mee ka ọnọdụ dị iche iche dị iche iche dị iche iche: Nkwụsị mmiri na nkwụsị mgbawa nke cellulose ethers na-eme ka ọ dị mma maka iwu ụlọ n'okpuru ọnọdụ ihu igwe dị iche iche, na-egbo mkpa nke gburugburu ebe obibi dị iche iche dị ka akọrọ n'ebe ugwu na iru mmiri n'ebe ndịda.

Atụmanya ahịa dị mma: Site na mmepe nke ụlọ akwụkwọ ndụ akwụkwọ ndụ na ọnụ ọgụgụ na-arịwanye elu maka ihe ụlọ na-arụ ọrụ dị elu, ahịa ahịa maka cellulose ethers dị ka ihe mgbakwunye isi na-abawanye kwa afọ. Karịsịa n'ime ụlọ ọrụ ịchọ mma, ihe ndị a chọrọ maka mgbidi mgbidi na mma elu dị mma, nke mere ka ohere mmepe nke ngwaahịa putty gbasaa. Cellulose ether dị ka modifier ga-enwe atụmanya ngwa karịa.