Umubyimba wamabara ya latex ugomba kuba uhujwe neza na emulsion polymer compound, bitabaye ibyo firime yo gutwikamo izaba ifite reticulike nkeya, kandi ikabyara aglomeration idasubirwaho, izagabanya ubukonje kandi igereranya ubunini bwibice. Umubyimba uzahindura amafaranga ya emulsion. Kurugero, umubyimba wa cationic uzagira ingaruka zidasubirwaho kuri anionic emulsifier kugirango ucike emuliyoni. Umubyimba mwiza wamabara ya latex ugomba kuba ufite ibintu bikurikira:
1. Umubare muke hamwe nubwiza bwiza
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3, gufata neza amazi, ntakintu kiboneka kigaragara
4. Nta ngaruka mbi ziterwa na firime nko kurwanya scrub, gloss, guhisha imbaraga hamwe no kurwanya amazi
5. Nta flokculament ya pigment
Kwiyongera kwikoranabuhanga rya latex nigipimo cyingenzi cyo kuzamura ubwiza bwa latex no kugabanya igiciro. Hydroxyethyl selulose ni umubyimba mwiza, ufite ingaruka nyinshi mubikorwa byo kubyimba, gutuza no guhindura imvugo ya latex.
Mubikorwa byo gukora amarangi ya latex,hydroxyethyl selulose (HEC)ikoreshwa nkibikoresho bitatanya, kubyimbye no guhagarika pigment kugirango ihagarike ubwiza bwibicuruzwa, kugabanya agglomeration, gukora firime yamabara neza kandi yoroshye, kandi binatuma irangi rya latex riramba. Imvugo nziza, irashobora kwihanganira imbaraga zogosha, kandi irashobora gutanga urwego rwiza, irwanya ibishushanyo hamwe nuburinganire. Muri icyo gihe, HEC ifite akazi keza cyane, kandi irangi rya latex ryijimye hamwe na HEC rifite pseudoplastique, kuburyo rero uburyo bwo kubaka nko gukaraba, kuzunguruka, kuzuza, no gutera spray bifite ibyiza byo kuzigama umurimo, ntibyoroshye koza no gukonja, kandi ntibisenyuke. HEC ifite iterambere ryiza cyane. Ifite kwibeshya cyane hamwe namabara menshi hamwe na binders, bituma bishoboka gukora amarangi ya latex hamwe nibara ryiza kandi rihamye. Ubwinshi bukoreshwa muburyo bwo gukora, ni ether itari ionic. Kubwibyo, irashobora gukoreshwa muburyo bugari bwa pH (2 ~ 12), kandi irashobora kuvangwa nibigize amarangi rusange ya latx nka pigment reaction, inyongeramusaruro, umunyu ushonga cyangwa electrolytike.
Nta ngaruka mbi kuri firime yo gutwikira. Kuberako igisubizo cyamazi ya HEC gifite ibimenyetso bigaragara hejuru yuburemere bwamazi, ntabwo byoroshye kubira ifuro mugihe cyo kubyara no kubaka, kandi imyumvire yibyobo byibirunga na pinhole ni bike.
Ububiko bwiza. Mubikorwa byigihe kirekire byo kubika, gutatanya no guhagarika pigment birashobora gukomeza, kandi ntakibazo cyo kureremba amabara no kumera. Iyo hari amazi make hejuru y irangi kandi ubushyuhe bwo kubika burahinduka cyane. Ubukonje bwacyo buracyahagaze neza.
HEC irashobora kongera agaciro ka PVC (ubunini bwibintu bya pigment) ibice bikomeye kugeza 50-60%. Mubyongeyeho, ikoti yo hejuru yibara ryamazi ashingiye kumazi irashobora kandi gukoresha HEC.
Kugeza ubu, umubyimba ukoreshwa mu marangi yo mu rwego rwo hejuru wo mu bwoko bwa latex utumizwa mu mahanga HEC na polymers ya acrylic (harimo polyacrylates, homopolymer cyangwa copolymer emulsion umubyimba wa acide acrylic na acide methacrylic).
Hydroxyethyl selulose irashobora gukoreshwa kuri
1. Nka kole ikwirakwiza cyangwa ikingira
Mubisanzwe, HEC ifite viscosity ya 10 kugeza 30 mPaS ikoreshwa. HEC igera kuri 300mPa · S irashobora gukoreshwa hamwe na anionic cyangwa cationic surfactants, kandi ingaruka zo gukwirakwiza nibyiza. Umubare w'amafaranga ni rusange 0,05% ya misa ya monomer.
2, nkibyimbye
Koresha 15000mPa. Igipimo cyerekana urugero-rwinshi cyane HEC hejuru ya s ni 0.5 kugeza 1% yubunini bwuzuye bwa latx, kandi agaciro ka PVC gashobora kugera kuri 60%. Mu irangi rya latex, HEC ya 20Pa, s irakoreshwa, kandi ibintu bitandukanye byamabara ya latex nibyiza. Igiciro cyo gukoresha HEC hejuru ya 30O00Pa.s kiri hasi. Ariko, kuringaniza nibindi biranga irangi rya latex ntabwo ari byiza. Urebye ibisabwa byujuje ubuziranenge no kugabanya ibiciro, nibyiza gukoresha ikigereranyo giciriritse kandi kinini HEC hamwe.
3. Uburyo bwo kwinjiza muburyo bwa latex
HEC itunganijwe neza irashobora kongerwamo ifu yumye cyangwa muburyo bworoshye. Ifu yumye yongewe muburyo bwo gusya kwa pigment. PH yinyongera igomba kuba 7 cyangwa munsi. Ibigize alkaline nkibitatanya birashobora kongerwaho nyuma yaHECyatose kandi iratatanye rwose. Ibishishwa bikozwe na HEC bigomba guhuzwa mubitaka mbere yuko HEC ibona umwanya uhagije wo kuvomera no kubyimba kugeza kumiterere idakoreshwa. HEC slurries irashobora kandi gutegurwa hamwe na glycol ishingiye kumashanyarazi.
4. Anti-mildew yamabara ya latex
Amazi ashonga HEC biodegrade iyo ihuye nibishusho byihariye bya selile n'ibiyikomokaho. Ongeramo imiti igabanya amarangi yonyine ntabwo ihagije, ibice byose bigomba kuba enzyme yubusa. Imodoka zitanga amarangi ya latex zigomba guhorana isuku kandi zifite isuku, kandi ibikoresho byose bigomba guhora bihindurwamo amavuta 0.5% ya foromine cyangwa 0.1% yumuti wa mercure.
Igihe cyo kohereza: Apr-25-2024