Admixtures inoita basa rinokosha mukuvandudza kushanda kwekuvaka yakaoma-yakasanganiswa dhaka.Izvi zvinotevera zvinoongorora uye kuenzanisa zvinhu zvakakosha zve latexr powder uye cellulose, uye kuongorora kushanda kwezvakaoma-zvakasanganiswa zvigadzirwa zvedhaka uchishandisa admixtures.
Redispersible latex poda
Redispersible latexr poda inogadziriswa nekupfapfaidza kuomeswa kweyakakosha polymer emulsion.Iyo yakaomeswa latexr poda ndeimwe spherical particles ye80 ~ 100mm yakaungana pamwechete.Izvi zvimedu zvinonyunguduka mumvura uye zvinoumba kupararira kwakagadzikana zvishoma kudarika emulsion particles yepakutanga, iyo inoumba firimu mushure mekushaya mvura uye kuoma.
Matanho ekugadzirisa akasiyana anoita kuti iyo redispersible latex poda ive nemhando dzakasiyana senge mvura yekudzivirira, alkali kuramba, kuramba mamiriro ekunze uye kuchinjika.latexr poda inoshandiswa mudhaka inogona kuvandudza kupikisa, kusimba, kupfeka kuramba, kusununguka kwekuvaka, kusungirirwa kwesimba uye kubatana, kuramba kwemamiriro ekunze, kutonhora-kunyungudika, kudzivirira mvura, simba rekukotama uye simba rekushanduka kwevhu.
Cellulose ether
Cellulose ether izwi rinowanzoreva nhevedzano yezvigadzirwa zvinogadzirwa nekuita kwealkali cellulose uye etherifying agent mune mamwe mamiriro.Alkali cellulose inotsiviwa nema etherifying agents akasiyana kuti awane akasiyana cellulose ether.Zvinoenderana neiyo ionization yezvinhu zvinotsiva, cellulose ethers inogona kukamurwa kuita mapoka maviri: ionic (senge carboxymethyl cellulose) uye isiri-ionic (senge methyl cellulose).Zvinoenderana nerudzi rweinotsiva, cellulose ether inogona kukamurwa kuita monoether (senge methyl cellulose) uye yakasanganiswa ether (senge hydroxypropyl methyl cellulose).Maererano nekunyungudika kwakasiyana-siyana, inogona kugoverwa kuva mvura-inonyunguduka (yakadai sehydroxyethyl cellulose) uye organic solvent-soluble (yakadai se ethyl cellulose), nezvimwewo. Dry-mixed mortar inonyanya kunyunguduka mumvura, uye mvura-soluble cellulose ndiyo. yakakamurwa kuva pakarepo mhando uye pamusoro kubatwa kunonoka kupera mhando.
Maitiro ekuita kwe cellulose ether mudhaka ndeaya anotevera:
(1) Mushure mekunge cellulose ether mudhaka yanyungudutswa mumvura, kugovaniswa kwakanaka uye kwakafanana kwezvinhu esimende muhurongwa kunovimbiswa nekuda kwebasa repamusoro, uye cellulose ether, senge inodzivirira, "inoputira" yakasimba. particles uye A layer ye lubricating film inoumbwa pamusoro pekunze kwayo, iyo inoita kuti dhaka rigadzikane, uye rinovandudzawo fluidity yedhaka panguva yekusanganiswa uye kutsetseka kwekuvaka.
(2) Nekuda kwechimiro chayo chemolecular, iyo cellulose ether solution inoita kuti mvura iri mudhaka isave nyore kurasikirwa, uye zvishoma nezvishoma inoiburitsa kwenguva yakareba, ichipa dhaka nekuchengetedza mvura kwakanaka uye kushanda.
huni fiber
Huni fiber inogadzirwa nezvirimwa seyo huru mbishi zvinhu uye inogadziriswa neyakatevedzana matekinoroji, uye kuita kwayo kwakasiyana neiyo cellulose ether.Zvinhu zvikuru ndezvi:
(1) Isinganyunguriki mumvura uye zvinonyungudutsa, uye zvakare isinganyunguriki mune isina kusimba asidhi uye isina simba base mhinduro
(2) Ikaiswa mudhaka, inopindirana mune matatu-dimensional chimiro mune static state, kuwedzera thixotropy uye sag kupikisa kwedhaka, uye kuvandudza kuvakwa.
(3) Pamusana pehutatu-dimensional chimiro chehuni yehuni, ine pfuma ye "mvura-kuvhara" mumatope akavhenganiswa, uye mvura iri mumatope haigoni kutorwa nyore nyore kana kubviswa.Asi haina kuchengetwa kwemvura kwakakwirira kwe cellulose ether.
(4) Iyo yakanaka capillary effect yehuni fiber ine basa re "mvura conduction" mudhaka, iyo inoita kuti pasi uye mukati mehutu hwehutu hwehutu huve hunoenderana, nokudaro kuderedza kuputika kunokonzerwa nekusaenzana shrinkage.
(5) Wood fiber inogona kuderedza deformation kusagadzikana kwedhaka rakaoma uye kuderedza shrinkage uye kuputika kwedhaka.
Nguva yekutumira: Mar-10-2023