1. Tsvagiridzo yekumashure kwemhedzisiro yecellulose etherpapurasitiki pasina shrinkage yedhaka
Doka chinhu chinoshandiswa zvakanyanya mumapurojekiti ekuvaka, uye kugadzikana kwekuita kwayo kune zvakakosha pamhando yezvivakwa. Plastic free shrinkage chiitiko chinogona kuitika mudhaka risati raoma, izvo zvinokonzeresa matambudziko akadai sekutsemuka mudhaka, zvichikanganisa kusimba kwayo uye aesthetics. Cellulose ether, sechinhu chinowanzo shandiswa mudhaka, ine simba rakakosha papurasitiki isina shrinkage yedhaka.
2. Nheyo ye cellulose ether inoderedza plastiki isina shrinkage yedhaka
Cellulose ether ine yakanakisa kuchengetedza mvura. Kurasikirwa kwemvura mudhaka chinhu chakakosha chinotungamira kune epurasitiki isina shrinkage. Mapoka ehydroxyl ari pa cellulose ether mamorekuru uye maatomu eokisijeni ari pazvisungo zveether anozogadzira mabhondi ehydrogen nemamorekuru emvura, achishandura mvura yemahara kuita mvura yakasungwa, nokudaro zvichideredza kurasikirwa kwemvura. Semuenzaniso, mune zvimwe zvidzidzo, zvakaonekwa kuti nekuwedzera kweselulosi ether dosage, chiyero chekurasikirwa kwemvura mumatope chakaderera. Kudamethyl hydroxypropyl cellulose ether (HPMC), apo muyero uri 0.1-0.4 (chikamu chiduku), inogona kuderedza kuparara kwemvura kwesement mortar ne 9-29%.
Cellulose ether inovandudza rheological properties, porous network structure uye osmotic pressure ye fresh simende paste, uye hupfumi hwayo hwekugadzira firimu hunotadzisa kupararira kwemvura. Iyi nhevedzano yemaitiro akabatana kuderedza kushushikana kunokonzerwa nekunyorova kwekuchinja mudhaka, nekudaro kuvharira epurasitiki yemahara shrinkage.
3. Mhedzisiro ye cellulose ether dosage papurasitiki isina shrinkage yedhaka
Zvidzidzo zvakaratidza kuti epurasitiki yemahara shrinkage yesamende dhaka inodzikira zvakatevedzana nekuwedzera kweiyo cellulose ether dosage. Tichitora HPMC semuenzaniso, kana chiyero chiri 0.1-0.4 (chikamu chezhinji), iyo plastiki isina shrinkage yesamende dhaka inogona kuderedzwa ne30-50%. Izvi zvinodaro nekuti sezvo iyo dosage inowedzera, iyo yekuchengeta mvura mhedzisiro uye mamwe shrinkage inhibition mhedzisiro inoramba ichiwedzera.
Nekudaro, iyo dosage ye cellulose ether haigone kuwedzerwa nekusingaperi. Kune rumwe rutivi, kubva pakuona kwehupfumi, kuwedzera kwakawandisa kuchawedzera mari; kune rumwe rutivi, yakawandisa cellulose ether inogona kukanganisa zvimwe zvinhu zvedhaka, sesimba redhaka.
4. Kukosha kwesimba re cellulose ether papurasitiki isina shrinkage yedhaka.
Kubva pakuona kwekuita kweinjiniya application, iyo inonzwisisika yekuwedzera ye cellulose ether kudhaka inogona kunyatso kudzikisa epurasitiki yemahara shrinkage, nekudaro kuderedza kuitika kwekutsemuka kwedhaka. Izvi zvakakosha zvikuru pakuvandudza kunaka kwezvivakwa, kunyanya pakuvandudza kusimba kwezvivakwa zvakaita semadziro.
Mune mamwe mapurojekiti akakosha ane zvinodiwa zvakanyanya zvemhando yedhaka, senge zvimwe zvivakwa zvekugara zvepamusoro uye zvivakwa zvakakura zveveruzhinji, nekudzora pesvedzero ye cellulose ether pane epurasitiki yemahara shrinkage yedhaka, inogona kuve nechokwadi chekuti chirongwa chinosangana nemhando yepamusoro miyero. .
5. Tariro dzekutsvakurudza
Kunyangwe pakave nemimwe mibairo yekutsvagisa pamusoro pesimba re cellulose ether pane epurasitiki isina shrinkage yedhaka, pachine zvakawanda zvinokwanisa kuongororwa zvakadzama. Semuyenzaniso, pesvedzero magadzirirwo emhando dzakasiyana dze cellulose ethers papurasitiki yemahara shrinkage yedhaka kana ichiita pamwe chete nezvimwe zvinowedzera.
Nekuenderera mberi kwekuvandudza tekinoroji yekuvaka, izvo zvinodikanwa zvekuita dhaka zviri kuramba zvichiwedzera. Kumwe kutsvagurudza kunodiwa kuti unganyatso kudzora sei kushandiswa kweselulosi ether mudhaka kuti uwane yakanakisa mhedzisiro yekuvharisa epurasitiki shrinkage pasina uchifunga nezve zvimwe zvinhu zvedhaka.
Nguva yekutumira: Zvita-13-2024