Zvigadzirwa zveGypsum, zvakaita sepurasita uye mabhodhi, zvinhu zvakakosha muindasitiri yekuvaka. Kuzivikanwa kwavo kunokonzerwa nekusiyana-siyana kwavo, nyore kushandisa, uye zvinhu zvinodikanwa zvakadai sekudzivirira moto uye acoustic performance. Nekudaro, matambudziko ane chekuita nekuchengetedza mvura uye nguva yekuomesa anoenderera, zvichikanganisa kugona kwavo uye kushandisa. Kufambira mberi kwazvino kwakaunza starch ethers sekuwedzera mukugadzirwa kwegypsum, ichipa kuvandudzwa kwakakosha mukuchengetedza mvura uye nguva yekuoma.
Kunzwisisa Starch Ethers
Starch ethers akagadziridzwa masichi anowanikwa nekuunza mapoka eether mumorekuru westarch. Kugadziridzwa uku kunonatsiridza kuchengetedza kwemvura yestarch, kukora, uye kusunga zvivakwa, zvichiita kuti ive chinhu chinowedzera chakanakira zvekuvaka. Starch ethers inogadzirwa kubva kune zvakasikwa sechibage, mbatatisi, kana gorosi, kuve nechokwadi kuti inochengetedza nharaunda uye inochengetedza.
Nzira Yekuita
Basa rekutanga re starch ethers mune gypsum-based zvigadzirwa nderekuvandudza kuchengetedza kwemvura. Izvi zvinowanikwa kuburikidza nekugona kwavo kuumba hydrogen zvisungo nemamorekuru emvura, kugadzira network inoteya mvura mukati mematrix. Iyi network inodzikisira mwero we evaporation, kuve nechokwadi chekuti gypsum ine nguva yakakwana yekunyorova uye kuseta nemazvo. Uyezve, starch ethers inoshandura rheological properties yegypsum slurry, ichiwedzera kushanda kwayo uye kushandiswa.
Kuchengeta Mvura
Muzvigadzirwa zvegypsum, kuchengetedza mvura yakakwana kunokosha kuti hydration yakakodzera ye calcium sulfate hemihydrate (CaSO4 · 0.5H2O) iite calcium sulfate dihydrate (CaSO4 · 2H2O). Iyi hydration process yakakosha pakuvandudzwa kwesimba remagetsi uye zvekupedzisira zvechigadzirwa. Starch ethers, nekubata mvura mumatrix, ive nechokwadi chekuti gypsum inogona kunyatso hydrate, zvichikonzera chigadzirwa chakasimba uye chakasimba chekupedzisira.
Kuderedzwa kweKuomesa Nguva
Kunyange zvazvo zvingaita sezvinopesana, kuchengetedzwa kwemvura kwakagadziridzwa kunofambiswa ne starch ethers kunobatsira pakuderedza nguva yose yekuoma. Izvi zvinodaro nekuti kuburitswa kwemvura kunodzorwa kunobvumira imwe yunifomu uye yakakwana hydration process, kuderedza njodzi yekuremara senge makatsemuka kana asina kusimba mavara. Nekuda kweizvozvo, iyo yekuomesa inova inoshanda zvakanyanya, zvichitungamira kune nekukurumidza kuseta nguva.
Benefits of Starch Ethers muGypsum-Yakavakirwa Zvigadzirwa
Enhanced Workability
Starch ethers inovandudza rheology yegypsum slurries, zvichiita kuti zvive nyore kusanganisa nekuisa. Izvi zvinonyanya kubatsira mukupfapfaidza maapplication uye kana uchishanda neakaomarara mold kana akaomarara madhizaini. Iyo yakagadziridzwa kuenderana inoderedza kuedza kunodiwa kuisa iyo gypsum uye inova nechokwadi chakapfava, chakafanana kupera.
Yakavandudzwa Mechanical Properties
Nekuve nechokwadi chekuti hydration yakakwana, starch ethers inosimudzira ma mechanic zvivakwa zvegypsum-based products. Izvo zvinoguma zvekushandisa zvinoratidzira yakakwirira yekumanikidza uye kusimba kusimba, kunamira kuri nani, uye kuwedzera kusimba. Aya magadzirirwo anowedzera hupenyu hwezvigadzirwa uye anosimudzira mashandiro azvo mumashandisirwo akasiyana siyana.
Yakaderedzwa Kutsemuka uye Shrinkage
Imwe yenyaya dzakajairika nezvigadzirwa zvegypsum kupaza uye shrinkage panguva yekuomesa. Starch ethers inoderedza dambudziko iri nekuchengetedza mwero wakakwana wehunyoro mukati mechikamu cheseta. Iyi inodzorwa kuburitsa mwando inoderedza kushushikana kwemukati uye inodzivirira kuumbwa kwekutsemuka, zvichitungamira kune yakagadzikana uye inoyevedza kupedzisa.
Sustainability
Starch ethers inotorwa kubva kune zvinogonekazve, zvichiita kuti ive sarudzo ine hushamwari kune indasitiri yekuvaka. Kushandisa kwavo muzvigadzirwa zvegypsum hakungokwidziri kuita chete asiwo kunopindirana nekukura kuri kudiwa kwezvinhu zvinovaka. Izvi zvinobatsira pakuvaka maitiro akasvibira uye zvinoderedza nharaunda yezvivakwa zvekuvaka.
Zvishandiso zveStarch Ethers muGypsum-Yakavakirwa Zvigadzirwa
Plaster
Mukuisa plaster, starch ethers inovandudza kureruka kwekupararira uye kuenzana, zvichikonzera kutsetseka uye kunyange pamusoro. Iyo yakagadziridzwa kuchengetwa kwemvura inovimbisa kuti plaster inoramba ichishanda kwenguva yakareba, ichideredza tsvina uye kuwedzera kushanda zvakanaka panzvimbo. Pamusoro pezvo, iyo yakaderedzwa yekuomeswa nguva inobvumira kukurumidza kupedzisa uye pendi, ichimhanyisa nguva yeprojekiti.
Wallboards
Gypsum wallboards inobatsira zvikuru kubva pakubatanidzwa kwe starch ethers. Simba rakavandudzwa uye kusimba kunoshandura kuita zvirinani kuramba kukanganiswa nekupfeka, kwakakosha kunzvimbo dzine vanhu vakawanda. Iyo yakaderedzwa yekuomesa nguva uye yakakwidziridzwa kushanda zvakanaka zvakare inofambisa kukurumidza kutenderera kutenderera uye nyore kugadzika, zvichiita kuti mabhodhi emadziro adhure uye anoshanda.
Joint Compounds
Mumajoini akabatanidzwa, starch ethers inopa yakanakisa yekubatanidza zvivakwa, kuve nechokwadi chekuti majoini asina musono uye kuderedza mukana wekutsemuka pamitsetse. Iyo yakagadziridzwa kuenderana uye kushanda kunoita kuti application ive nyore, nepo iyo yakagadziridzwa kuchengetedza kwemvura inovimbisa yakasimba uye yakasimba chisungo.
Nyaya Dzidzo uye Mienzaniso Yechokwadi-Nyika
Zvidzidzo zvakati wandei zvakaratidza zvakanakira starch ethers mune gypsum-based products. Semuenzaniso, chirongwa chekuvaka chichishandisa starch ether-modified plaster yakashuma kudzikiswa kwe30% munguva yekuomeswa uye kuderera kukuru kwekutsemuka zvichienzaniswa neyakagadzirwa plaster. Imwe ongororo pamabhodhi egypsum yakaratidza kuwedzera kwe25% mukupikisa kwemaitiro uye kupera kwakapfava, kunokonzerwa nekuvandudzwa kwemvura uye kushanda kunopihwa nestarch ethers.
Matambudziko uye Nhungamiro Yeramangwana
Nepo mabhenefiti e starch ether akanyorwa zvakanaka, matambudziko anoramba ari mukugadzirisa mashandisirwo azvo mumhando dzakasiyana dzegypsum. Tsvagiridzo irikuenderera mberi kugadzirisa kutarisisa uye rudzi rwe starch ethers kune akasiyana maapplication, kuve nechokwadi chepamusoro mabhenefiti ekuita. Zviitiko zveramangwana zvinogona kutarisisa kuenderana kwe starch ethers nezvimwe zvinowedzera uye nekuongorora zvitubu zvitsva zve starch kuitira kusimudzira kukuru.
Starch ethers inomiririra kufambira mberi kwakakosha mukugadzira zvigadzirwa zvegypsum, zvinopa kuchengetwa kwemvura kwakagadziridzwa uye kuderedzwa nguva yekuomeswa. Aya mabhenefiti anoshandura mukukwidziridzwa kushanda, zvirinani zvemakanika zvivakwa, uye kuwedzera kusimba. Sezvo indasitiri yekuvaka iri kuramba ichishanduka, kutorwa kwe starch ethers muzvigadzirwa zvegypsum kungangokura, zvichitungamirwa nekudiwa kwezvinhu zvinovaka, zvinogara, uye zvine hushamwari. Nekushandisa zvimiro zvechisikigo zve starch ethers, iyo indasitiri inogona kuwana hukuru hwekuita uye kubatsira kune yakawedzera kusimba maitiro ekuvaka.
Nguva yekutumira: Jun-03-2024