Hydroxypropyl methylcellulose inonyanya kushandiswa se dispersant mukugadzirwa kwe polyvinyl chloride, uye ndiyo huru yekubatsira mumiriri wekugadzirira PVC nekumisa polymerization. Mukuita kwekuvaka kweindasitiri yekuvaka, inonyanya kushandiswa mukuvaka mechan sekuvaka madziro, plastering, caulking, nezvimwe; kunyanya mukuvaka kwekushongedza, inoshandiswa kunama mataira eceramic, marble, uye kushongedza kwepurasitiki. Iine simba guru rekubatanidza uye inogona kuderedza kuwanda kwesamende. . Iyo inoshandiswa seyakakora muindasitiri yependi, iyo inogona kuita kuti dhizaini rive rakajeka uye rakapfava, kudzivirira kubviswa kwehupfu, kunatsiridza mashandiro anoita, nezvimwe.
Mune simende dhaka uye gypsum-based slurry, hydroxypropyl methylcellulose inonyanya kuita basa rekuchengetedza mvura uye kukora, iyo inogona kunyatso kuvandudza simba rakabatana uye sag kuramba kweslurry. Zvinhu zvakadai semhepo tembiricha, tembiricha uye kumhanya kwemhepo zvinokanganisa huwandu hwekuvhuvhuta kwemvura mumatope esimende uye zvigadzirwa zvegypsum. Naizvozvo, mumwaka wakasiyana, kune mimwe misiyano mukuchengetedza mvura kwemaitiro ezvigadzirwa zvine huwandu hwakafanana hwehydroxypropyl methylcellulose yakawedzerwa. Mukuvaka chaiko, iyo yekuchengeta mvura mhedzisiro yeslurry inogona kugadziriswa nekuwedzera kana kudzikisa huwandu hweHPMC hwakawedzerwa. Kuchengetwa kwemvura kwemethyl cellulose ether pasi pemamiriro ekushisa kwakanyanya chiratidzo chakakosha chekusiyanisa kunaka kwehydroxypropyl methyl cellulose ether. Yakanakisa hydroxypropyl methylcellulose akatevedzana zvigadzirwa zvinogona kunyatsogadzirisa dambudziko rekuchengetedza mvura pasi pekupisa kwakanyanya. Mumwaka wekushisa kwakanyanya, kunyanya munzvimbo dzinopisa uye dzakaoma uye dzakatetepa-layer kuvakwa padivi rezuva, yemhando yepamusoro HPMC inodiwa kuvandudza kuchengetwa kwemvura kweslurry.
Yepamusoro-mhando hydroxypropyl methylcellulose (HPMC) ine yakanaka kwazvo yakafanana. Iwo methoxy uye hydroxypropoxy mapoka akagoverwa zvakaenzana pamwe chete ne cellulose molecular chain, iyo inogona kuwedzera maatomu eokisijeni pa hydroxyl uye ether bond. Iko kugona kushamwaridzana nemvura kugadzira ma hydrogen bond anoshandura mvura yemahara kuita mvura yakasungwa, nekudaro kunyatso kudzora kubuda kwemvura kunokonzerwa nekupisa kwemamiriro ekunze uye kuwana yakakwira mvura. Mvura inodiwa pakuita hydration kuitira kuisa simende zvinhu zvakaita sesimende negypsum. Huwandu hwakakodzera hweHPMC hunogona kuchengetedza hunyoro mudhaka kwenguva yakareba yakakwana kuitira kuti kugadzika uye kuomesa maitiro kuenderere mberi.
Huwandu hwehydroxypropyl methylcellulose (HPMC) hunodiwa kuti uwane kuchengetwa kwemvura yakakwana zvinoenderana ne:
Absorbency ye base layer
Kuumbwa kweMortar
Mortar layer ukobvu
Kudiwa kwemvura yematope
Nguva yekumisikidza ye simenti
Hydroxypropyl methylcellulose inogona kuparadzirwa zvakafanana uye zvinobudirira mudhaka resimende uye gypsum-based zvigadzirwa, uye kuputira zvese zvakasimba zvimedu, uye kugadzira firimu rekunyorova, hunyoro huri mujinga hunoburitswa zvishoma nezvishoma kwenguva yakareba, uye inoenderana neinorganic. Iyo hydration reaction yeiyo gelled zvinhu inovimbisa kusimba kwechisungo uye kumanikidza kusimba kwezvinhu.
Naizvozvo, mukupisa kwekupisa kwezhizha kuvakwa, kuitira kuti uwane mhedzisiro yekuchengetedza mvura, zvinodikanwa kuti uwedzere emhando yepamusoro zvigadzirwa zveHPMC muhuwandu hwakakwana maererano neformula, zvikasadaro, pachave nekusakwana hydration, kuderedzwa simba, kuputika, kuputika. uye kudurura kunokonzerwa nekuomeswa zvakanyanya. matambudziko, asiwo kuwedzera kuoma kwekuvaka kwevashandi. Sezvo tembiricha inodonha, huwandu hwemvura HPMC hwakawedzerwa hunogona kuderedzwa zvishoma nezvishoma, uye iyo yakafanana yekuchengetedza mvura inogona kuwanikwa.
Nguva yekutumira: Kubvumbi-10-2023