Uru nke HPMC

Hydroxypyl Methylcelllose (HPMC) bụ polymer-solubles na-ejikarị ya na akụrụngwa ụlọ, karịsịa na ngwaahịa ciment nke sitere na ciment. Ọ na-arụ ọrụ dị mkpa n'ọtụtụ owuwu n'oge owuwu na mgbe ejichara, ọkachasị na imezigharị ndọlite.

1
Dị ka nke na-abụghị nke ionic Ether, HPMC nwere nnukwu mmiri dị elu na viscositse. Ihe omumu ya nwere hydroxy na methoxy otu, nke na - enyere ya aka idozi nguzozi nke uzo, viscosity na njigide mmiri nke ciment paste. Mgbe a gbasasịrị HPMC ahụ na mmiri, ihe ngwọta guzobere nwere ezigbo mmanu, na-akpụ akpụ na ihe ndị na-edozi ahụ, nke a na-eji n'ọtụtụ cimesion.

Mmetụta mmeghachi omume nke HPMC na-ebugharị site na usoro ndị a:

Enyemaka mmiri na-eme ka mmiri dị elu: Hpmc nwere ike ime ka ọnụego njide mmiri dị na ciment tapawa, si otú ahụ gbochie mmiri site na iwepụ herdration nke ciment. Ihe hydration na-emeghachi nke Ciment bụ isi ihe na-eme ka ike na adresion. Njikọ mmiri nke Hpmc na-eme ka ike ikpeazụ na ndọpụta nke ihe ndị dabeere.

Melite agbanwe agbanwe na ọrụ: HPMC nwere ike ime ka viscosity nke ihe ndị sitere na ihe onwunwe ciments, mee ka ọ dịkwuo mfe ịrụ ọrụ n'oge owuwu. Na mgbakwunye, HPMC nwere ike ime ka ọ dị mma nke ihe a, na-eme ka ọ bụrụ otu edokwu n'oge ma ọ bụ ịtọdụ, ma na-eme ka arụmọrụ arụ ọrụ.

Mee ka ike dị mma: HPMC nwere ike iwepụta adhesion siri ike n'elu mkpụrụ site na iji ike dị mfe. Karịsịa na porous asịrị ma ọ bụ nke dị mma, HPMC na-abawanye ike ndọpụta na ihe ndị dabeere ciment na mkpụrụ, na-egbochi ịmị mkpụrụ ma ọ bụ peeling.

2. Uru nke hpmc na-eme ka ndọnye nke ngwaahịa ciment nke simenti
Meziwanye ọrụ na viscosity nke ngwa agha
Dinggbakwunye HPMC ka ngwa agha nwere ike ime ka ọ dịkwuo mma na viocosisse ya, na-ewuli elu, ọ ga - egbochi nsogbu ịmịcha ọkụ. Ọ nwere ike melite ndọnye n'etiti mgbọrọgwụ na mkpụrụ osisi, hụ na ngwa edo edo, ma belata mkpofu na mkpofu n'oge owuwu.

Meziwanye njigide mmiri ma belata cracking
Njikọ mmiri HPMC dị elu dị na gburugburu akọrọ. Ọ nwere ike ime ka mmiri dị ngwa na-egbochi mmiri na ihe ndị sitere na ciment ma mee ka ọ rụọ ọrụ ma hụ na hydration nke ciment zuru oke. Mmetụta njide mmiri a na-ebelata nsogbu nke mgbawa ngwa ngwa nke nkụ na-eme ngwa ngwa, ọkachasị mgbe owuwu buru ibu dị irè. Site na ịba ụba ogo ciment hydration, ike na ịdịgide nke ihe ahụ na-eme ka ọ dịkwuo elu.

Na-eme ka njikọta dị elu ma mee ka mma dị mma na mkpụrụ
Ngwongwo HPMC na-enyere ya aka imepụta ihe nkiri nnyapade n'elu ihe ndị sitere na ciment, na-eme ka njikọta n'etiti ngwaahịa ciment na ọtụtụ mkpụrụ. Ma a na-eji ya eme ihe dị ka ihe dị ka ihe dị ka ihe, brik ma ọ bụ blọọgụ nwere ike inye adhesion siri ike iji gbochie nsogbu, nhichapụ ma ọ bụ imegide ihe mgbe ihichachara. Nke a dị mkpa karịsịa maka ngwaahịa dị ka ndị dị gịrịp u ụra na taịlị nke chọrọ njikọ nke njikọ dị elu.

Arụmọrụ mgbochi
N'oge ihe ndị dabeere ciment, ọkachasị na mbara igwe kwụ ọtọ ma ọ bụ na-ewu ụlọ dị elu, a na-ezute ya na ihe ndị ahụ n'ihi ndọda. HPMC nwere ike iwelie viscosict na nha nke ngwaahịa ciment, na-ezere mgbanwe na ọdịdị ha n'ihi nkwanye ugwu, si otú a na-ewulite ọnụ ọgụgụ ịrụzi.

Meziwanye ọnọdụ na nguzogide
A na-ahụkarị ndọta HPMC nke enyere na usoro owuwu, kamakwa na ịdị anya na nkwụsi ike mgbe ejiri ya. Ọ nwere ike ịbawanye mgbanwe na ndagide na-eguzogide ihe ciment, ma zere ịgbaji na ihe mgbe ọnọdụ okpomọkụ gbanwere ma ọ bụ ike na-enweghị eriri. Ike a na-agbasa ndụ ọrụ nke ụlọ ma na-ebelata ụgwọ mmezi.

3. Ngwa nke HPMC na ngwaahịa ciment dị iche iche
Tale nrapado
HPMC bụ otu n'ime ihe ndị dị mkpa nke taịlị. Ebe ọ bụ na ọ bụ na ndị na-achọgharị na-achọ ihe dị elu maka adhesion, mgbakwunye nke HPMC nke ukwuu na-eme ka ihe ndọnye aka na njikọta, na-ejide taịlị nwere ike kwụsie ike ma ghara ịtọpụ ya ogologo oge. N'otu oge ahụ, njigide mmiri nke HPMC nwere ike igbochi mgbawa nke ndị na-adọsa mkpụrụ ego na-adabere n'oge a na-akpọ nkụ ma meziwanye ọnụ ala nke nrapado.

Ngwa ngwa
Mgbakwunye nke onwe onye chọrọ na ihe ahụ nwere ezigbo mmiri n'oge owuwu, ebe ọ bụ na ọ naghị akpata ichegharị ma ọ bụ ịmịcha n'ihi mmiri oke. Ngwa nke HPMC na ngwa agha nke onweghị nke nwere ike ịnwe arụmọrụ ọ na-arụ n'oge a na-ewu ya, kamakwa ọ na-akawanye mma ya na mkpụrụ osisi na cracks.

Mkpuchi mkpuchi mkpuchi
A na-ejikwa HPMC na-ejikarị mkpuchi mkpuchi mkpuchi ciment, nke nwere ike ime ka arụmọrụ owuwu nke mkpuchi, mee ka nrapado ya na arụmọrụ mgbochi mmiri ya. Njide mmiri na ihe nkiri na-akpụ akpụ nke HPMC na-ahụ na mkpuchi mmiri mmiri nwere ike ịmalite oyi akwa mmiri mgbe ewuchara ndụ ya.

Dịka mgbakwunye na ngwaahịa ciment dị mkpa, Hpmc nke ukwuu na-eme ka nrapado na arụmọrụ nke ihe ndị a. Site na ịkwalite ụdị mmiri, viscosity na ngbaghara, ma na-eme ka ndọnye mmiri na mkpụrụ, Hpmc egosila uru dị ukwuu na ntinye nke ihe ciment. Ma n'ime ubi nke ngwa agha, taleasives ma ọ bụ mkpuchi mkpuchi, Hpmc nwere ike imeziwanye arụmọrụ na ogo ngwaahịa a, wee belata ụgwọ ọrụ ya na-esote. Ya mere, HPMC abụrụla akụrụngwa dị mkpa na ihe dị mkpa na ihe ndị sitere na ciment.