Dhaka nderimwe remabhurukwa anonyanya kushandiswa mukuvaka kwemazuva ano. Kushanda kwaro uye hunhu hwaro hwekupedzisira zvinokanganisa zvakananga kugara kwenguva refu uye runako rwepurojekiti yekuvaka.hydroxypropyl methylcellulose (HPMC)Kugadzira simbi dzesimbi dzemuto kwave kushandiswa zvakanyanya muindasitiri. Senzira yepolymer inoshanda zvakanyanya uye inonyungudika mumvura, HPMC inoita mabasa akawanda musimbi dzesimbi, kusanganisira kukora, kuchengetedza mvura, uye kuvandudza kushanda kwayo. Chinhu chinobatsira zvikuru pakuvandudza kushanda kwesimbi dzesimbi.
1. Mabasa Makuru eHPMC muMortar
1.1. Kuchengetwa kwemvura kwavandudzika zvikuru
Panguva yekuvaka dhaka, kupwanyika kwemvura nekukurumidza kana kunyudzwa nehwaro hwepasi kunogona kukonzera kunyorova kwesimende kusina kukwana, zvichikonzera kutsemuka uye simba risinganetsi. Mamorekuru eHPMC anoumba firimu repolymer rakagadzikana mudhaka, zvichinyatsovhara mumvura, zvichideredza kurasikirwa nemvura uye zvichiita kuti simende inyorovese zvakakwana. Kuchengetwa kwemvura uku kwakanaka kwakakosha zvikuru pakushanda nekupisa kwakanyanya, hunyoro hushoma, kana hwaro hwepasi hunonyanya kunyudza.
1.2. Kushanda Kwakavandudzwa uye Kuyerera Kwakanaka
HPMC ine hunhu hwakanaka hwekuzora mafuta, zvichiita kuti dhaka rive rakapfava, rive nyore kusanganisa, uye rive nyore kupararira. Rinoita kuti dhaka rive rakagadzikana uye rive thixotropy, zvichireva kuti rinochengetedza chimiro charo chakasimba kana rakadzikama uye rinoyerera zvakasununguka kana ravhundutswa. Izvi zvinovandudza zvakanyanya kunzwa kwedhaka, zvinoderedza kuoma kwekuvaka, uye zvinowedzera kushanda zvakanaka.
1.3. Nguva Yakarebeswa Yekuvhura uye Kumhanya Kwakagadziriswa Kwekugadzirisa
Mumamiriro ezvinhu anopisa kana akaoma, pamusoro pechigubhu chinowanzo rasikirwa nemvura nekukurumidza, zvichiita kuti zviome kuisa kana kuenzana. HPMC inoderedza kupwa kwehunyoro muchigubhu, nokudaro ichiwedzera nguva yekuvhurika panguva yekuisa uye ichibvumira vashandi nguva yakawanda yekugadzirisa, nokudaro ichidzivirira majoini asina kuenzana uye nzvimbo dzisina kuenzana. Inodzorawo maitiro ekuisa, ichivimbisa kuomarara kwakafanana uye kwakasimba kwechigubhu.
1.4. Kunatsiridzwa kweKunamira uye Hunhu Hwakanaka Hunodzivirira Kutsvedza
HPMC inoumba network mukati me simende, ichisimudzira kubatana pakati pemota ne substrate. Kune masisitimu akadai sematiles, ma thermal insulation mortars, uye plaster mortars, kuwedzerwa kweHPMC zvinobudirira kudzivirira kutsvedza, kunovandudza kunamira, uye kunoita kuti pave nekugadzikana kwenguva refu.
1.5. Kuchengetedzwa Kwakawedzerwa Kwechimiro uye Kuramba Kudonha
Panguva yekuvaka pamadziro kana padenga, madhaka anowanzo donha kana kudonha. HPMC inowedzera zvakanyanya kuramba kudonha kwedhaka nekuwedzera kushushikana kwegoho redhaka uye hunhu hwethixotropic, zvichiita kuti rirambe rakaita zvakanaka panguva yekuvaka, kudzivirira kudonha uye kuve nechokwadi chekuti rakafanana pakukora.
2. Chipimo cheHPMC uye Kubudirira Kwekushanda
HPMC inowanzo shandiswa muzvikamu zvidiki, kazhinji iine 0.1% kusvika 0.5% yehukuru hwechombo, asi kukanganisa kwayo kwakakura. Kusakwana kunogona kukonzera kusakwana kwekuchengetedza mvura uye hunhu hwekubatanidza, nepo kuwanda kuchigona kunonoka kugadzika kana kuderedza simba. Nokudaro, mhando nechiyero chechombo chinofanira kusarudzwa nemazvo zvichienderana nerudzi rwechombo (semuenzaniso, plaster mortar, tile adhesive, thermal insulation mortar, self-leveling mortar, nezvimwewo) uye nzvimbo yekuvaka. HPMC ine mwero wakasiyana wekutsiva uye viscosity ine mhedzisiro yakasiyana pakushanda kwechombo: mhando dze high-viscosity dzinopa kuchengetedza mvura kuri nani, nepo mhando dze low-viscosity dzichiratidza kuwedzera kwemvura.
3. Kukosha uye Mafambiro Ekukura kweHPMC
Nekuwedzera kwekushandiswa kwepfungwa dzekuchengetedza simba uye dzekuvaka zvirimwa, dry-mix mortar yakatsiva zvakanyanya dhaka rekare riri panzvimbo yacho. Sechinhu chinowedzera mu dry-mix mortar systems, mhando yeHPMC inokanganisa zvakananga mashandiro echigadzirwa. HPMC yepamusoro-soro inosimbisa system yedhaka, ichivimbisa kushandiswa kwakasimba uye kushanda kwakasimba. Parizvino, zvigadzirwa zveHPMC zvakanongedzerwa zviripo zvekushandisa zvakasiyana (senge dhaka risingapindi mvura, masisitimu ekudzivirira madziro ekunze, uye mataira anonamira). Kuburikidza nekuchinja magadzirirwo emamorekuru uye kugadzirisa pamusoro, zvigadzirwa izvi zvinowana kuenderana kwakanyatsojeka kwekushanda.
HPMCHazvisi kungowedzera mukugadzirwa kwemortar; chinhu chakakosha chinoratidza mashandiro emortar uye mhando yekuvaka. Zvinowedzera zvakanyanya mashandiro ese uye ruzivo rwekuvaka kwemamortar nekuvandudza kuchengetedza mvura, kushanda zvakanaka, kunamira, uye kuramba kudonha. Nekufambira mberi kuri kuramba kuchiita tekinoroji muindasitiri yekuvaka, zvinodiwa pakushanda kweHPMC zviri kuwedzerawo. Zvigadzirwa zveHPMC zvinoshanda zvakanyanya, zvine hushamwari kune zvakatipoteredza, uye zvinogona kugadziriswa zvicharamba zvichitungamira mukugadzirwa kwezvinhu zvemortar zvemhando yepamusoro.
Nguva yekutumira: Gumiguru-10-2025