HPMC (Hydroxypropyl Methyl Cellulose) na HEMC (Hydroxy Ethyl Methyl Cellulose) bụ cellulose ethers nke a na-ejikarị eme ihe na ihe owuwu n'ihi ihe ha pụrụ iche. Ha bụ polymers soluble mmiri nke sitere na cellulose, polymer eke dị na mgbidi cell osisi. A na-eji HPMC na HEMC dị ka ihe mgbakwunye na ngwaahịa ihe owuwu dị iche iche iji welie ihe onwunwe ha ma melite nhazi.
Ndị a bụ ụfọdụ ngwa nke HPMC na HEMC na ihe owuwu:
Adhesives Tile: A na-agbakwunye HPMC na HEMC na nrapado taịlị iji melite arụmọrụ na ike njikọ. Ndị polymers ndị a na-arụ ọrụ dị ka ndị na-ekpo ọkụ, na-enye oge ghe oghe ka mma (ogologo oge nke nrapado na-anọgide na-eji ya eme ihe) na ibelata sagging tile. Ha na-ebulikwa nrapado nke nrapado na ihe dị iche iche.
Mortars cementitious: A na-eji HPMC na HEMC mee ihe n'ụrọ simenti dị ka plasta, plasta na sistemu mkpuchi mpụta (EIFS). Ndị polymer a na-eme ka ọrụ nke ngwa agha dịkwuo mma, na-eme ka ọ dị mfe ịgbasa na itinye. Ha na-eme ka njikọ dị n'otu, belata mmịnye mmiri ma mee ka mmachi nke ngwa agha dị iche iche dịkwuo mma.
A na-eji ngwaahịa gypsum eme ihe: HPMC na HEMC na-eji ihe ndị dị na gypsum dị ka plasta gypsum, ogige nkwonkwo na ntinye aka nke onwe. Ha na-arụ ọrụ dị ka ndị na-ejigide mmiri, na-eme ka arụ ọrụ dịkwuo mma ma na-agbatị oge nhazi nke ihe ahụ. Ndị a polymers na-akwalitekwa mgbawa mgbawa, belata shrinkage na melite adhesion.
Ngwakọta nhazi nke onwe: A na-agbakwunye HPMC na HEMC na ogige ndị na-edozi onwe ha iji meziwanye ọsọ na nhazi ọkwa. Ndị polymers ndị a na-enyere aka belata viscosity, na-achịkwa mmịpụta mmiri ma na-enye njedebe elu ka mma. Ha na-eme ka adhesion nke ogige ahụ dịkwuo mma na mkpụrụ.
Grouting: HPMC na HEMC nwere ike iji maka grouting tile nkwonkwo na masonry. Ha na-eme dị ka rheology modifiers, na-eme ka eruba na workability nke grouts. Ndị polymers ndị a na-ebelatakwa ntinye mmiri, na-eme ka adhesion dịkwuo mma ma kwalite nkwụsị mgbape.
N'ozuzu, HPMC na HEMC na-eji ọtụtụ ebe na-ewu ihe n'ihi na ha nwere ike melite processability, adhesion, mmiri njigide, na n'ozuzu arụmọrụ nke ngwaahịa. Ha na-akwalite usoro ihe owuwu ka mma site n'ịkwalite ịdịte aka na ịdị mma nke ihe ụlọ dị iche iche.
Oge nzipu: Jun-08-2023