1. I-Inorganic Shinener
Ama-inorganic amikhulu anguhlobo lwamaminerali we-gel angadonsa amanzi futhi avuvukele futhi abe ne-thixotropy, ikakhulukazi i-bentonite ye-organic, i-hectonite esuselwa emanzini, futhi ivimbela ukucwilisa amanzi, kepha inokugcinwa kwamanzi okufudumele kanye nokuthola izakhiwo. Imvamisa isetshenziswa ngokubambisana ne-cellulose ether noma ama-pripers nopende. Upende Ophezulu Wokwakha.
2. I-cellulose mkhulu
Ama-cellulosic mkhulu angumlando obalulekile onomlando omude wokufaka isicelo, okubandakanya i-hydroxymethyl cellulose, kanye ne-hydroxypropyl cellulose, okuyi-hydroxypropyl cellulose, lapho i-hydroxyethyl cellulose, lapho kwakungu-hydroxyethylls, khona lapho esetshenziswa kakhulu.
Uma kuqhathaniswa nabanye abakhulu, ama-cellulose amikhulu anezinzuzo zokuqina okuphezulu, ukuhambisana okuhle nezinhlelo ezinhle zokuhlanganisa, ukusebenza okuphezulu okuphezulu, ithonya elincane le-PH ekubonakaleni. Izinzuzo, kepha ukusetshenziswa kwe-cellulose síreners nakho kunezinkinga ezinkulu, ikakhulukazi kulezi zinto ezilandelayo.
A. Ukusebenza kwe-anti-mold kumpofu. I-cellulose rearener iyindawo yemvelo ye-polymer, esengcupheni yokuhlaselwa isikhunta, okuholela ekunciphiseni ekubonakaleni. Inezidingo eziqinile ekukhiqizweni nasendaweni yokugcina.
B. Ukulinganisa, ngaphansi kwesenzo sokuxineka kwe-shear, ungqimba we-hydration phakathi kwesikhudlwana namanzi abhujiswa ngopende we-latex agqinsiwe nge-cellulose, okulula ukuyakha. Ngemuva kokuthi ukuhlanganiswa kwe-coating, ukucekelwa phansi kwe-hydration ungqimba kumiswa ngokushesha, futhi i-visa liphinda livuse ngokushesha futhi upende awuveli ngokwanele, wenza amamaki we-rush noma amamaki wokunamathela.
C. Splashing. Ngesikhathi sokwakhiwa okunejubane elikhulu elifudumele, izinhlayiya ezincane zokupenda zivame ukukhiqizwa kwigebe eliphumayo phakathi kwe-roller ne-substrate, elibizwa ngokuthi yi-atomization; Ngesikhathi se-roller enesivinini esisheshayo, ibizwa ngokuthi i-splashering.
D. Ama-cellulose amikhulu amathuba okungenzeka ukuthi adale ukuhlukaniswa kanye nokuhlukaniswa kwesigaba kwezinhlayiya ze-latex, kuthinte ukuqina kokuhlanganiswa, futhi kubangele ukuncipha kwe-glue.
3. I-Polyacrylate Firener
Ama-polyacrylate amikhulu angahlukaniswa ngezinhlobo ezimbili: enye i-polyacrrylate yamanzi; Okunye yi-Homopolymer noma i-copolymer emulsion simikhulu ye-acrylic acid ne-methacrylic acid.
Lo mkhulu ngokwawo u-acidic futhi udinga ukungathathi hlangothi nge-alkali noma ama-ammonia amanzi enani le-ph inani le-8-9 ukukhiqiza umphumela wokuqina. Ibizwa nangokuthi i-acrylic acid alkali ukuvuvukala okukhulu.
Bathembele kakhulu ekuphumeni kwama-elekthrobodi ama-ionsboxylate ion ahlukaniswe ngaphansi kwezimo ze-alkaliwe ngaphansi kwezimo ze-alkaline ukwenza amaketanga ama-molecular anwebe izinduku futhi akhutshwe, futhi i-PH ilindelwe iphakeme kune-7.5.
I-acrylic mkhulu yi-anioric, futhi ukumelana kwayo kwamanzi kanye nokumelana kwe-alkali kumpofu. Uma kuqhathaniswa nama-cellulosic omkhulu, inempahla enhle yokulinganisa kanye ne-anti-splash, futhi inethonya elincane ku-gloss, ngakho-ke lingasetshenziswa kuzimbali ezicwebezelayo.
4. I-Polyurethane Emikhulu
Qhathanisa ne-cellueners eshiwo ngenhla kanye nama-acrylic amikhulu, ama-polyurethane aminyene anezinzuzo ezilandelayo:
A. Womabili amandla amahle okucasha nokulinganisa okuhle.
B. Isisindo esiphansi samangqamuzana, akulula ukukhiqiza i-splash lapho i-roller coating.
C. Ingazihlanganisa nezinhlayiya ze-latex ngaphandle kwe-fouse-limited flocculation, ngakho-ke kungenza ifilimu lokuhlanganisa libe nesicwebezelisi esiphakeme;
D. I-hydrophopobicity enhle, ukumelana kwesikhukhula, ukumelana kwesikhashana nokuqina kwemvelo.
AbakwaPolyurethane bakhudlwana bazwela ngokwengeziwe ukwakheka kwefomula, futhi ukuvumelana nezimo zabo akukuhle njengakwe-cellulose mkhulu. Ithonya lezinto ezahlukahlukene kufanele libhekwe ngokugcwele lapho lisebenzisa.
Kunezinhlobo eziningi zabakhulu. Lapho ukhetha ukuzisebenzisa, ukusebenza kahle okukhuphuka kanye nethonya kumculo we-Rheology kufanele kubhekwe kuqala, kanye nethonya ekusebenzeni kwezokwakha, ukubukeka kwefilimu yokuhlanganisa kanye nokuqina kufanele kubhekwe okwesibili.
Isikhathi sePosi: Feb-14-2025