Paint na Gaskiya na Gaskiya tare da Cellulose Ether

An tattauna tasirin adadin ether na cellulose, ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar kuma za a iya nunawa, kuma an yi la'akari da ether cellulose. an kimanta cikakken aikin fentin dutse na gaske ganowa.

Mabuɗin kalmomi:ainihin dutse fenti;juriya farin ruwa;cellulose ether

0,Gabatarwa

Real dutse varnish ne roba guduro emulsion yashi bangon gine-gine shafi sanya na halitta granite, crushed dutse da dutse foda a matsayin tara, roba guduro emulsion a matsayin tushe abu da kuma supplemented da daban-daban Additives.Yana da nau'in rubutu da kayan ado na dutse na halitta.A cikin aikin kayan ado na waje na gine-gine masu tsayi, yawancin masu mallakar da magina sun fi son shi.Duk da haka, a cikin kwanakin damina, shayar da ruwa da fari sun zama babban hasara na ainihin fenti na dutse.Ko da yake akwai babban dalili na emulsion, ƙara yawan adadin abubuwan hydrophilic irin su cellulose ether yana ƙara yawan shayar da ruwa na ainihin fim ɗin fenti na dutse.A cikin wannan binciken, daga hannun ether cellulose, an yi nazarin tasirin adadin ether cellulose, nauyin kwayoyin dangi da nau'in gyare-gyare akan abin da ke sha ruwa da fari na ainihin fenti na dutse.

1. Hanya na shayar ruwa da fari na ainihin dutse fenti

Bayan an bushe murfin fenti na gaske na dutse, yana yiwuwa ya yi fari idan ya hadu da ruwa, musamman a farkon lokacin bushewa (12h).A cikin ruwan sama, rufin zai zama taushi da fari bayan ruwan sama ya wanke shi na dogon lokaci.Dalili na farko shi ne cewa emulsion yana sha ruwa, na biyu kuma yana haifar da abubuwa na hydrophilic kamar cellulose ether.Cellulose ether yana da ayyuka na kauri da riƙe ruwa.Saboda haɗuwa da macromolecules, magudanar maganin ya bambanta da na ruwa na Newtonian, amma yana nuna halin da ke canzawa tare da canjin ƙarfin ƙarfi, wato, yana da babban thixotropy.Inganta aikin ginin fenti na dutse na gaske.Cellulose ya ƙunshi D-glucopyranosyl (anhydroglucose), kuma tsarinsa mai sauƙi na ƙwayoyin cuta shine (C6H10O5) n.Cellulose ether aka samar da cellulose barasa hydroxyl kungiyar da alkyl halide ko wani etherification wakili a karkashin alkaline yanayi.Tsarin ether na hydroxyethyl cellulose, matsakaicin adadin ƙungiyoyin hydroxyl da aka maye gurbinsu ta hanyar reagents ta naúrar anhydroglucose akan sarkar kwayoyin cellulose ana kiranta matakin maye gurbin, ƙungiyoyin 2, 3, da 6 hydroxyl duk an maye gurbinsu, kuma matsakaicin matakin maye gurbin shine 3. Ƙungiyoyin hydroxyl na kyauta a kan sarkar kwayoyin halitta na cellulose ether suna iya hulɗa don samar da haɗin gwiwar hydrogen, kuma suna iya yin hulɗa da ruwa don samar da haɗin gwiwar hydrogen.Ruwan ruwa da riƙewar ruwa na ether cellulose yana da tasiri kai tsaye a kan shayar da ruwa da kuma farar fata na ainihin dutsen fenti.Ruwan ruwa da aikin riƙewar ruwa na ether cellulose ya dogara da matakin maye gurbin cellulose, masu maye gurbin da kuma digiri na polymerization na cellulose ether kanta.

2. Bangaren gwaji

2.1 Na'urorin gwaji da kayan aiki

JFS-550 Multi-aiki na'ura don tsayayye stirring, high-gudun watsawa da yashi milling: Shanghai Saijie Chemical Equipment Co., Ltd .;JJ2000B ma'aunin lantarki: Changshu Shuangjie Testing Instrument Factory;CMT-4200 na'urar gwajin lantarki ta duniya: Kamfanin Shenzhen Sansi Gwajin Kayan Aikin Co., Ltd.

2.2 Tsarin gwaji

2.3 Tsarin gwaji

Add ruwa, defoamer, bactericide, antifreeze, film-forming aid, cellulose, pH regulator da emulsion zuwa disperser bisa ga dabara don tarwatsa ko'ina, sa'an nan kuma ƙara launin yashi da motsawa da kyau, sa'an nan kuma amfani da daidai adadin thickener Daidaita danko. , tarwatsa ko'ina, kuma ku sami fenti na gaske na dutse.

Yi allon tare da fenti na ainihi na dutse, kuma ku yi gwajin fata na ruwa bayan an warke tsawon sa'o'i 12 ( nutsewa cikin ruwa na 4 hours).

2.4 Gwajin aiki

A cewar JG / T 24-2000 "Synthetic Resin Emulsion Sand Wall Paint", an gudanar da gwajin wasan kwaikwayon, yana mai da hankali kan juriya na farin ruwa na daban-daban na fenti na hydroxyethyl cellulose ether, da sauran alamun fasaha dole ne su cika buƙatun.

3. Sakamako da tattaunawa

Dangane da halaye na aikin hydroxyethyl cellulose ether, an yi nazarin tasirin adadin adadin hydroxyethyl cellulose ether, nauyin kwayoyin dangi da hanyar gyare-gyare akan juriya mai farar ruwa na fenti na gaske.

3.1 Tasirin sashi

Tare da karuwa da adadin hydroxyethyl cellulose ether, da ruwa whitening juriya na ainihin dutse fenti sannu a hankali deteriorates.Mafi girman adadin ether cellulose, yawan adadin kungiyoyin hydroxyl kyauta, yawan ruwa zai samar da haɗin gwiwar hydrogen tare da shi, yawan shayar da ruwa na ainihin fim ɗin fenti na dutse zai karu, kuma juriya na ruwa zai ragu.Yawan ruwa a cikin fim ɗin fenti, yana da sauƙi don farar fata, don haka juriya na farin ruwa ya fi muni.

3.2 Tasirin ƙwayar ƙwayar cuta ta dangi

Lokacin da adadin hydroxyethyl cellulose ethers tare da daban-daban dangi kwayoyin talakawa ne iri daya.Mafi girman girman adadin kwayoyin halitta, mafi muni da juriya na fari na ruwa na fenti na ainihi na dutse, wanda ke nuna cewa nauyin kwayoyin halitta na hydroxyethyl cellulose ether yana da tasiri akan juriya na ruwa na ainihin dutsen fenti.Wannan shi ne saboda haɗin sinadarai> haɗin gwiwar hydrogen> van der Waals ƙarfi, mafi girman girman ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta ta cellulose ether, wato, mafi girman digiri na polymerization, ƙarin haɗin sinadarai da aka samu ta hanyar haɗin glucose raka'a, kuma mafi girma. hulda da karfi na dukan tsarin bayan forming hydrogen bond tare da ruwa , da karfi da ruwa sha da ruwa iya aiki, mafi muni da ruwa whitening juriya na ainihin dutse Paint.

3.3 Tasirin hanyar gyarawa

Sakamakon gwajin ya nuna cewa gyare-gyare na nonionic hydrophobic ya fi na asali, kuma gyare-gyaren anionic shine mafi muni.Non-ionic hydrophobically modified cellulose ether, ta grafting hydrophobic kungiyoyin a kan kwayoyin jerin cellulose ether.A lokaci guda, daɗaɗɗen lokacin ruwa yana samuwa ta hanyar haɗakar hydrogen da ruwa da sarkar kwayoyin halitta.Ayyukan hydrophobic na tsarin yana raguwa, don haka aikin hydrophobic na ainihin fenti na dutse ya inganta, kuma an inganta juriya na ruwa.Anionically modified cellulose ether an modified ta cellulose da polyhydroxysilicate, wanda inganta thickening yadda ya dace, anti-sag yi da anti-splash yi na cellulose ether, amma ta ionity ne mai karfi, da ruwa sha da kuma iyawar da aka inganta , The ruwa whitening juriya. na ainihin dutse fenti ya zama mafi muni.

4. Kammalawa

Rushewar ruwa da fari na fenti na dutse na gaske suna shafar abubuwa da yawa kamar adadin ether cellulose da kuma hanyar gyare-gyare na ƙwayar ƙwayar ƙwayar cuta.Ruwa sha da fari na ainihin dutse fenti.