Ungayilungiselela kanjani i-polymer powder (RDP)?

Ukukhiqiza i-PolyMer Powders kuyinqubo eyinkimbinkimbi ehilela izigaba eziningi, ngakunye kwalokho okubalulekile ekufezeni izakhiwo ozifunayo kanye nokwenza umsebenzi wokugcina.

1. Isingeniso ku-polymer polymer powder

A. Ukuchazwa kanye nesicelo
Ama-polymer powders abuyiselwe ama-polymer anezinhlayiya zomlomo ezihle kakhulu ezingahlakazwa kalula emanzini ukuze akhe ama-emulsions azinzile. Lawa ma-powders asetshenziswa kabanzi ezintweni zokwakha ezinjengezidakamizwa, anamathela kanye nama-grouts njengoba zithuthukisa izakhiwo zemishini, ukunamathela kanye nokuguquguquka kwale mikhiqizo.

B. Ukwakheka okuyisisekelo
Izithako eziphambili ze-polymer powder evuselelayo zifaka:

I-Polymer Binder: I-Polymer Binder iyingxenye esemqoka futhi imvamisa i-copolymer ye-vinyl acetate ne-ethylene (VAE) noma enye i-polymer efanelekile. Lokhu kunikeza ukuguquguquka komkhiqizo wokugcina kanye nokunamathelisa.

I-colloid evikelayo: Faka izinkundla noma okuvikelayo

Izengezo: Izithasiselo ezahlukahlukene, ezinjengabahlakazekile, amapulasitiki, kanye nezikhudlwana, zingafakwa ukuthuthukisa izakhiwo ezithile ze-powder.

2. Inqubo Yokukhiqiza

A. Emulsion polymerization
Ukukhetha iMonomer: Isinyathelo sokuqala sibandakanya ukukhetha ama-monomers afanele ukusabela kwe-polymerization, imvamisa i-acetate ne-ethylene.

I-Emulsation: Kusetshenziswa ama-surfactants ukugcizelela ama-monomers emanzini ukwakha i-emulsion ezinzile.

I-Polymerization: Umuntu owesilisa ungezwa emulsion ukuqala ukusabela kwe-polymerization. Izinhlayiya ze-polymer zikhula futhi ekugcineni zakha i-polymer birmer.

Izinyathelo zokuphendula ezithunyelwe: Izinyathelo ezengeziwe ezinjengokulawula i-PH kanye lokushisa zibalulekile ekufezeni izakhiwo ezifiselekayo ze-polymer.

B. Ukuchofoza
Ukuhlushwa kwe-Emulsion: ukugxilisa i-polymer emulsion kokuqukethwe okukhethekile kwe-solids efanelekile ukomisa.

Ukufafaza ukomisa: I-emulsion ehlanganisiwe ihlelwe ngamaconsi amahle futhi yangeniswa egumbini lokumisa okushisayo. Amanzi avele, ashiye ngemuva kwezinhlayiya eziqinile ze-polymer.

Ukulawulwa Kwezinhlayiyana Zezinhlayiyana: Lungiselela amapharamitha ahlukahlukene kufaka phakathi isilinganiso sokuphakelayo, izinga lokushisa kanye ne-nozzle design ukulawula usayizi wezinhlayiyana.

C. Powder post-processing
Ukungeza ama-colloids avikelayo: Ama-colloids avikelayo avame ukungezwa kumapoda ukuvikela izinhlayiyana zezinhlayiyana futhi athuthukise ukubuyiselwa emuva.

Izengezo: Ezinye izengezo zingenziwa kulesi sigaba ukuthuthukisa izakhiwo ezithile ze-powder.

3. Ukulawulwa kwekhwalithi nokuhlola

A. Ukuhlaziywa kosayizi wezinhlayiyana
I-Laser DifTraction: Amasu wokuphazamiseka we-Laser asetshenziselwa ukukala ukusatshalaliswa kosayizi wezinhlayiyana ama-polymer powders.

I-Microscopy: Ukuhlaziywa kwemicroscopic kunganikeza ukuqonda ngezinhlaka ze-morphology nanoma yiziphi izingqinamba ze-aggglomeration.

B. Ukuhlolisisa Ukuhlolisisa
Ukuhlolwa kwe-SurdisPrift Yokubuyiselwa Kwamanzi: Hlanganisa i-powder ngamanzi ukuze uhlole amandla okwenza i-emulsion ezinzile.

Ukuhlolwa okubukwayo: Hlaziya ukubukeka kwempuphu evuselelwa kabusha, kufaka phakathi noma yiziphi iziqu noma ama-agglomerates.

C. Ukuhlaziywa Kwamakhemikhali
Ukwakheka kwe-polymer: amasu anjenge-penier transform infrared spectroscopy (FTIR) asetshenziselwa ukuhlaziya ukwakheka kwamakhemikhali kwama-polymers.

Okuqukethwe kwe-monomer okusele

4 .. IZINSELELE NOKUFUNDA

A. Umthelela Wezemvelo
Ukukhethwa kwezinto ezibonakalayo: Ukukhetha ama-monomers emvelo kanye nezinto zokwakha ezingavuthiwe kunganciphisa umthelela wezemvelo wenqubo yokukhiqiza.

Ukusetshenziswa kwamandla: ukulungiselela ukusetshenziswa kwamandla, ikakhulukazi esiteji sokuchomisa sokufafaza, kunomthelela ekusimeni.

B. Ukusebenza komkhiqizo
Ukwakheka kwe-polymer: Ukukhetha kwe-polymer kanye nokwakheka kwalo kuthinta kakhulu izakhiwo zamapoti abukhali abukhali.

Ukuqina Kwesitoreji: Ukungeza ama-colloids afanele afanelekile kubalulekile ukuvikela ukuqina kwempuphu ngesikhathi sokugcina.

5 Isiphetho
Ukwenza ama-polymers polymers ahlanganisa ukuhlanganiswa okuyinkimbinkimbi kwe-emulsion polymerization, izinyathelo zokuchoboza zokufa kanye nokusebenza. Izindlela zokulawula ezisezingeni eliphezulu, kufaka phakathi ukuhlaziywa kwezinhlayiya zezinhlayiya zezinhlayiya kanye nokuhlola okulungisayo, kubalulekile ukuqinisekisa ukuthi umkhiqizo uhlangabezana nokucaciswa okudingekayo. Ukulinganisa Ukucatshangelwa Kwemvelo kanye nokusebenza komkhiqizo kubalulekile ekuthuthukisweni okuqhubekayo nokusetshenziswa kwama-polymer powders ahlukahlukene ezimbonini ezahlukahlukene.