Hydroxypropylmethylcellulose (HPMC) bụ cellulose mmepụta nke a na-ejikarị dị ka ihe nkedo na thickener na mpaghara dị iche iche gụnyere ihe owuwu, ọgwụ na nri. HPMC bụ polymer soluble mmiri nke nwere ike inye nnukwu uru dị ka nrapado na ụlọ ọrụ tile. N'isiokwu a, anyị na-atụle ọrụ nke hydroxypropylmethylcellulose (HPMC) na tile adhesives.
ewebata
Adhesives tile bụ ihe ndị sitere na polymer eji ejikọta taịlị na ihe dị iche iche dị ka ngwa simenti, konkịtị, plastaboard na ihe ndị ọzọ. Enwere ike kewaa nrapado taịlị ka ọ bụrụ nrapado organic na nrapado inorganic. Adhesives Organic tile na-adaberekarị na polymers sịntetik dị ka epoxy, vinyl ma ọ bụ acrylic, ebe adhesives inorganic dabere na ciment ma ọ bụ ihe ịnweta.
A na-eji HPMC eme ihe n'ọtụtụ ebe dị ka ihe mgbakwunye na nrapado taịlị organic n'ihi ihe ndị pụrụ iche ya dị ka njide mmiri, thickener, na akụrụngwa rheological. Ihe ndị a dị oke mkpa iji hụ na adhesives tile na-agwakọta nke ọma, na-akwalite ịrụ ọrụ nke ọma ma belata oge ihicha. HPMC na-enyekwa aka ịbawanye ike nke nrapado tile, na-eme ka ọ dịkwuo ogologo.
njide mmiri
Ndowe mmiri bụ ihe dị mkpa iji hụ na nrapado tile adịghị akpọnwụ ngwa ngwa. HPMC bụ ezigbo ihe na-ejigide mmiri, ọ nwere ike idowe ihe ruru 80% nke ibu ya na mmiri. Ngwongwo a na-eme ka nrapado na-anọgide na-eji ya eme ihe ruo ogologo oge, na-enye onye na-edozi taịl ahụ ogologo oge iji dọba taịlị ahụ, ọbụlagodi ụbọchị dum. Na mgbakwunye, HPMC na-eme ka usoro ọgwụgwọ ahụ dịkwuo mma, na-ahụ maka njikọ siri ike yana ịkwalite ịdịte aka.
thickener
Viscosity nke adhesives tile na-emetụta kpọmkwem na ọkpụrụkpụ nke ngwakọta, na-emetụta ịdị mfe nke ngwa na ike njikọ. HPMC bụ a ukwuu oru oma thickener nke nwere ike nweta elu viscosities ọbụna na ala ịta. Ya mere, ndị na-emepụta ihe na-emepụta tile nwere ike iji HPMC mepụta nrapado taịlị nwere nkwekọ dabara adaba maka ngwa ọ bụla chọrọ.
Njirimara rheological
Njirimara rheological nke HPMC nwere ike melite arụmọrụ nke nrapado tile. Viscosity na-agbanwe na ogo nke nrụgide shiee etinyere, ihe onwunwe a maara dị ka shear thinning. Shear thinning na-eme ka njirimara eruba nke nrapado taịlị, na-eme ka ọ dị mfe ịgbasa mgbidi na ala na obere mgbalị. Ọzọkwa, HPMC na-enye ọbụna nkesa nke ngwakọta, na-ezere clumping na-erughị eru ngwa.
Melite ike nkekọ
Ịrụ ọrụ nke nrapado taịlị na-adabere n'ụzọ dị ukwuu na ike nkekọ: ihe ntanye ahụ ga-adị ike nke ọma iji mee ka taịlị ahụ sie ike n'elu ma nagide nrụgide nke nwere ike ime ka taịlị ahụ gbawa ma ọ bụ gbanwee. HPMC na-enye aka na ihe onwunwe a site n'ịkwalite ogo nke nrapado na imeziwanye nrapado ya. HPMC resins na-emepụta nrapado taịlị na-arụ ọrụ dị elu nwere ike njikọ dị elu yana ogologo ogologo oge. Iji HPMC na-enyere aka igbochi grout ma ọ bụ tile cracking ma na-edobe taịlị ahụ ka ọ ghara ịdịte aka ka ọ dị ogologo oge.
na ngwụcha
Na mmechi, HPMC na-eme ka adhesives taịlị organic site n'inye ọtụtụ uru, gụnyere njide mmiri, nkwubi okwu, njirimara rheological na nkwalite ike njikọ. Ikike HPMC imeziwanye ikike ịrụ ọrụ, belata oge ihicha yana gbochie mgbawa tile emeela ka ọ bụrụ akụkụ dị mkpa nke ụlọ ọrụ tile. Ojiji nke HPMC na mmepe nke tile adhesives nwere ike imeziwanye ogo ngwaahịa ma na-enye ihe ngwọta na-adịgide adịgide, siri ike nke na-arụ ọrụ dịka ha na-atọ ụtọ. Uru ndị a niile na-egosi na HPMC bụ polymer na-agbanwe egwuregwu na ahịa nrapado tile na-eto eto.
Oge nzipu: Jun-21-2023