HPMC (Hydroxypropyl Methylcellulose) bụ ihe mgbakwunye a na-ejikarị eme ihe n'ịrụ plasta, karịsịa n'ịkwalite nguzogide mmiri, ihe nrịanrịa na ịrụ ọrụ nke plasta.
1. Meziwanye njigide mmiri nke plasta
HPMC bụ ngwakọta polymer na-agbaze mmiri nke nwere ike ịmepụta usoro netwọk na ciment ma ọ bụ plasta dabeere na gypsum. Ihe owuwu a na-enyere aka idobe mmiri ma gbochie ciment ma ọ bụ gypsum ka ọ ghara ịlafu mmiri ngwa ngwa n'oge usoro siri ike, si otú a na-ezere mgbawa ma ọ bụ ibelata mmiri na-eguzogide. Site n'ịgbakwụnye HPMC kwesịrị ekwesị na plasta, usoro hydration nke ciment nwere ike igbu oge, na-eme ka plasta nwee ike ijikwa mmiri. Hydrate a na-emepụta site na ciment n'oge usoro hydration chọrọ mmiri zuru ezu iji kwalite mmeghachi omume. Ịkwụsị ọnwụ nke mmiri nwere ike imeziwanye ike njupụta na mgbochi ntinye nke ihe ikpeazụ.
2. Meziwanye adhesion na njupụta nke plasta
Dị ka ihe mgbakwunye polymer, HPMC nwere ike ọ bụghị naanị welie akụrụngwa rheological nke plasta, kamakwa melite nrapado ya. Mgbe agbakwunyere HPMC, ike njikọta nke plasta na-eme ka ọ dịkwuo mma, nke na-enyere ya aka ịmepụta nrapanye siri ike na mkpụrụ (dị ka brik, kọmpat ma ọ bụ mgbidi gypsum). N'otu oge ahụ, HPMC na-eme ka plasta na-emepụta ihe dị njọ n'oge usoro siri ike, na-ebelata ọnụnọ nke pores capillary. Obere oghere pụtara na ọ na-esiri mmiri ike ịbanye, si otú ahụ na-eme ka mmiri na-eguzogide plasta.
3. Mmelite permeability eguzogide
Ọdịdị molekụla nke HPMC nwere ike ịmepụta ihe dị ka colloid n'ime plasta, na-ekwe ka plasta mepụta otu microstructure n'oge usoro ọgwụgwọ. Ka ihe owuwu ahụ na-akawanye mma, elu nke plasta na-adịwanye mma ma na-adịwanye njọ, na ike nke mmiri na-ebelata. Ya mere, a na-eme ka mmiri na-eguzogide mmiri nke plasta dị mma, karịsịa na ebe iru mmiri ma ọ bụ mmiri nwere mmiri, mgbakwunye HPMC nwere ike igbochi mmiri nke ọma ịbanye na mgbidi site na akwa akwa akwa.
4. Ọganihu dị mma na mgbochi mmiri
Mmiri na-eguzogide mmiri na-adabere ọ bụghị nanị na ikike nke mmiri na-ekpuchi ihe dị n'elu, kamakwa ọ na-ejikọta ya na nhazi nke ime nke plasta. Site na ịgbakwunye HPMC, nkwụsi ike anụ ahụ na kemịkalụ nke plasta nwere ike imeziwanye. HPMC na-akwalite nguzogide corrosion nke plasta ma na-ezere corrosion ciment kpatara site na ntinye mmiri. Karịsịa n'ime imi mmiri ogologo oge ma ọ bụ gburugburu iru mmiri, HPMC na-enyere aka ịgbatị ndụ ọrụ plasta ma welie ihe ndị na-egbochi ịka nká.
5. Gbanwee viscosity na workability
HPMC nwekwara ọrụ nke imezi viscosity na rheological Njirimara. N'ime ihe owuwu n'ezie, viscosity kwesịrị ekwesị nwere ike ime ka plasta adịghị mfe ịgbasa mgbe etinyere ya, ma nwee ike kpuchie ya na mgbidi n'emeghị ka plasta daa n'oge a na-ewu ya n'ihi oke mmiri. Site n'ịchịkwa ịrụ ọrụ nke plasta, ndị na-arụ ọrụ ụlọ nwere ike ịchịkwa ịdị n'otu nke plasta ahụ nke ọma, si otú a na-emeziwanye ọrụ mgbochi mmiri nke plasta ahụ n'ụzọ na-edoghị anya.
6. Mee ka mgbape na-eguzogide
N'oge usoro ihe owuwu ahụ, plasta na-adịkarị mfe ịdaba n'ihi ihe ndị dị n'èzí dị ka mgbanwe okpomọkụ na mgbanwe iru mmiri, na-ebute mgbawa. Ọnụnọ nke mgbawa ọ bụghị nanị na-emetụta ọdịdị nke plasta, kamakwa ọ na-enye ọwa maka ntinye mmiri. Mgbakwunye nke HPMC nwere ike ime ka ihe siri ike nke plasta dịkwuo ike, na-eme ka ọ nwee ike ịgbawa mgbawa n'oge usoro ihicha, si otú ahụ na-ezere mmiri site na ịbanye n'ime ime site na mgbawa na ibelata ihe ize ndụ nke ịbanye mmiri.
7. Meziwanye mgbanwe na ihe owuwu ụlọ
Mgbakwunye nke HPMC nwekwara ike ime ka plasta nwee ike ime mgbanwe n'okpuru ọnọdụ ihu igwe dị iche iche. N'ebe dị elu nke okpomọkụ, mmiri nke plasta na-ekpochapụ ngwa ngwa ma na-enwe ike ịgbawa. Ọnụnọ nke HPMC na-enyere plasta aka idowe mmiri n'ime ebe akọrọ, nke mere na a na-achịkwa ọsọ ya na-agwọ ya ma na-ezere mmebi nke oyi akwa na mmiri na-adịghị na ya site na ihicha ngwa ngwa. Tụkwasị na nke a, HPMC nwekwara ike imeziwanye ihe nkedo nke plasta, ka o wee nwee ike ịnọgide na-enwe ezigbo nchikota n'elu ala dị iche iche na ọ dịghị mfe ịdapụ.
HPMC na-arụ ọrụ dị mkpa n'ịkwalite nguzogide mmiri nke plasta, tumadi site na akụkụ ndị a:
Njide mmiri: igbu oge hydration ciment, jigide mmiri, ma gbochie ihicha ngwa ngwa.
Adhesion na njupụta: welie adhesion nke plasta n'elu ala ma mepụta nnukwu ihe owuwu.
Permeability nkwụsị: belata pores ma gbochie ịbanye mmiri.
Ogologo oge na mgbochi mmiri: melite kemịkalụ na nkwụsi ike nke anụ ahụ ma gbasaa ndụ ọrụ.
Mgbochi mgbawa: mụbaa ike nke plasta ma belata nguzobe nke cracks.
Mwube ihe owuwu: meziwanye akụrụngwa rheological nke plasta ma melite arụmọrụ n'oge ihe owuwu. Ya mere, HPMC abụghị naanị ihe mgbakwunye iji melite arụ ọrụ nke plasta, kamakwa ọ na-eme ka mmiri na-eguzogide mmiri nke plasta site na ọtụtụ usoro, nke mere na plasta nwere ike ịnọgide na-enwe ezigbo nkwụsi ike na ogologo oge dị ogologo na gburugburu ebe dị egwu.
Oge nzipu: Nov-20-2024