HPMC, inozivikanwawo sehydroxypropyl methylcellulose, inowanzoshandiswa mukuwedzera mumaindasitiri akasiyana.Muindasitiri yekuvaka, HPMC inoshandiswa zvakanyanya musimende-based zvinhu zvakaita seputty poda, gypsum, uye simende dhaka.HPMC inobata basa rakakosha mukuvandudza kushanda kweputty powders nekupa kushanda kwakanaka, kusimba kwakabatana uye kuchengetedza mvura.Zvisinei, apo HPMC inoshandiswa kune putty powder, chiitiko chinonzi "foaming" chinoitika.Muchikamu chino, tinoongorora zvinokonzera mablister uye tinokurukura nzira dzekudzivirira.
Chii chinonzi blistering uye nei ichiitika?
Blistering chiitiko chemhepo inoputika kana blister pamusoro peputty poda mushure mekuvakwa.Izvi zvinogona kuitika pakarepo mushure mekushandisa kana mushure menguva yakati, zvichienderana nechikonzero.Blistering inogona kukonzerwa nehuwandu hwezvinhu zvinosanganisira kutadza kugadzirira substrate, kushandiswa pasi pemamiriro ekunze akashata kana kushandiswa kwezvinhu zvisingaenderane.Zvikonzero zvekupupa kweHPMC uye putty powder ndezvizvi:
1. Kusapindirana pakati peHPMC nezvimwe zvinowedzera: HPMC inowanzoshandiswa pamwe chete nezvimwe zvinowedzera zvakadai se superplasticizers, retarders, uye air-entraining agents.Nekudaro, kana izvi zvinowedzera zvisingaenderane, kubuda furo kunogona kuguma.Izvi zvinoitika nekuti izvo zvinowedzera zvinokanganisa kugona kwemumwe kuita basa ravanoda, zvichikonzera musanganiswa usina kugadzikana uye kusanamatira zvakanaka kune substrate.
2. Kusakwana kusanganiswa: Apo HPMC inosanganiswa neputty powder, kusanganiswa kwakakodzera kunokosha zvikuru.Kusakwana kusanganiswa kunogona kukonzera kuti HPMC iunganidze pamwe chete uye igadzire zvitsuwa mumusanganiswa.Zvitsuwa izvi zvinogadzira nzvimbo dzisina simba pamusoro peputty powder, iyo inogona kukonzera blisters.
3. Kuchengetwa kwemvura: HPMC yakakurumbira nokuda kwekuchengetedza mvura, iyo yakanaka kune putty powder.Asi kana iyo putty poda ikawana hunyoro hwakawandisa, inokonzeresa kuputika.Izvi zvinowanzoitika kana putty powder inoshandiswa mumamiriro ekunyorova kwepamusoro kana panzvimbo dzisina kupora zvakanaka.
4. Uipi hwekushandisa nzira: Kuipa kwekushandisa nzira kunogona kukonzera mablistering.Semuenzaniso, kana putty ikashandiswa zvakanyanya, inogona kubata homwe dzemhepo pasi pedenga.Aya mabhuru emhepo anogona kubva awedzera uye kukonzera kupupa.Saizvozvo, kana putty ikaiswa nekukurumidza kana nesimba rakawandisa, inoumba chisungo chisina kusimba neiyo substrate, iyo inogona zvakare kukonzera blistering.
Nzira Yokudzivirira Nayo Blistering
Kudzivirira kupupa kana uchishandisa HPMC uye putty poda kunoda kunyatsotarisisa kune zvigadzirwa, matekiniki uye mamiriro ezvakatipoteredza anobatanidzwa.Heano mamwe mazano ekudzivirira blisters:
1. Sarudza zvinowedzera zvinopindirana: Paunenge uchishandisa HPMC, zvakakosha kusarudza madhipatimendi anoenderana nemumwe.Izvi zvinobatsira kuve nechokwadi chekuti musanganiswa wacho wakagadzikana uye kuti chimwe nechimwe chinowedzera chinoita basa rayo rakatarisirwa pasina kupindira kune vamwe.
2. Shingairira zvakaenzana: HPMC inofanira kusanganiswa zvakakwana neputty powder kuti ive nechokwadi chekugovera.Izvi zvinobatsira kudzivirira mapundu uye nzvimbo dzisina simba pamusoro peputty powder.
3. Kudzora hunyoro: Kudzora hunyoro kwakakosha paunenge uchishandisa HPMC uye putty poda.Ita shuwa kuti iyo putty poda haina kusangana nehunyoro hwakanyanya panguva yekuvaka, uye dzivirira kuvaka pasi pehunyoro hwepamusoro kana mamiriro emvura.Kana zvichidikanwa, shandisa dehumidifier kuderedza hunyoro huri mumhepo.
4. Shandisa Yakakodzera Kushandisa Technique: Yakakodzera nzira yekushandisa ichabatsirawo kudzivirira mablistering.Isa iyo putty poda mune yakaonda, kunyange layer uye isa kune substrate ne trowel kana chimwe chinhu chakakodzera.Dzivisa kuisa putty poda yakakora, nekukasira kana nesimba rakawandisa.
5. Funga nezve substrate: Iyo substrate iyo iyo putty powder inoshandiswa inokanganisawo njodzi yekuputika.Ita shuwa kuti substrate yanyatsorapwa, yakacheneswa uye yakagadzirirwa usati waisa putty poda.Kana zvichidikanwa, primer inogona kushandiswa kuvandudza chisungo pakati pe substrate uye putty powder.
Mukupedzisa, kuputika kunogona kuva dambudziko rinoshungurudza uye risingaoneki paunenge uchishanda neHPMC uye putty powder.Nekudaro, mamiriro ezvinhu aya anogona kudzivirirwa nekutarisisa kune zvigadzirwa, matekiniki uye mamiriro ezvakatipoteredza anobatanidzwa.Nekusarudza zvinowirirana zvinowedzera, kusanganisa zvakanaka, kudzora hunyoro, kushandisa nzira dzekushandisa dzakafanira, uye kufunga nezve substrate, unogona kuve nechokwadi chekupedza, isina bubble nguva dzese.Semugadziri anotungamira weHPMC, takazvipira kupa zvigadzirwa zvemhando yepamusoro zvinosangana nezvinodiwa nevatengi vedu.Tinovimba kuti chinyorwa ichi chave chichibatsira mukunzwisisa kuti sei HPMC uye putty powder foam uye nzira yekudzivirira nayo.
Nguva yekutumira: Jul-20-2023