Uburyo bwo gukoresha HPMC mu gusiga irangi mu mazi

Hydroxypropyl methylcellulose (HPMC), inyongeramusaruro ikoreshwa cyane mu buryo bwo gusiga amazi, ihuza ubunini, kubika amazi, gutuza, no kunoza imikorere, bigatuma iba ibikoresho by'ingenzi mu kunoza imikorere rusange y'udupira. Guhitamo neza no gukoresha neza HPMC ntibishobora gusa kunoza uburyo udupira dukomeza kubika neza ahubwo binanoza ubwiza bwa firime n'uburyo brush ikora.

1. Guhitamo Impamyabushobozi ikwiye n'Impamyabushobozi yo gusimbuza hakurikijwe Sisitemu

Ingano y'ubukonje ya HPMC igira ingaruka zikomeye ku ikoreshwa ry'imvange. Ingano y'ubukonje bwinshi (urugero, hejuru ya mPa·s 100.000) ishobora kongera cyane ubukonje bwo hasi kugeza hagati bw'imvange, bigafasha kunoza imiterere yo kurwanya kugwa no kugwa mu gihe cyo kuyikoresha; icyakora, ubukonje bwinshi cyane byongera ingorane zo kuvanga no kugira ingaruka ku buryo imvange ingana. Ingano y'ubukonje buri hagati (30.000–60.000 mPa·s) ikwiriye cyane amarangi menshi ya latex, bigatuma habaho uburinganire hagati yo gukomera no kungana. Ku bijyanye n'imvange yo hanze cyangwa imvange nyinshi, ni byiza ko imvange ingana cyane; mu gihe ku bijyanye n'imvange yo imbere, ubukonje buri hagati bushobora gukoreshwa kugira ngo bwongere uburyo bworoshye bwo kuyikoresha.
Uburyo bwo gusimbuza HPMC amatsinda ya methoxy na hydroxypropoxy bugira ingaruka ku gushonga no ku guhagarara kwayo. Uburyo bwo gusimbuza bwinshi butuma amazi ashonga neza kandi bugatuma umunyu wihanganira gushonga, bigatuma habaho guhagarara neza mu miterere ifite ibara ryinshi n'ibinure cyangwa iyo pH ihindagurika cyane.

2. Kumenya uburyo bwiza bwo gusenya no gukwirakwiza

HPMC isaba gukwirakwira neza kugira ngo igere ku bunini buhamye. Uburyo bubiri busanzwe bwo gushonga ni ubu:
Uburyo bwo gukangura ubushyuhe bw'icyumba: Suka HPMC mu mazi akonje ku buryo bungana ukoresheje uburyo bwo gukangura bwihuse, urebe neza ko itose neza idapfunditse, hanyuma ukomeze gukangura kugeza ishongeshejwe burundu. Irinde kongeramo byinshi icyarimwe, kuko bishobora gutuma habaho uduce duto bigoye gukwirakwiza.
Uburyo bwo gukwirakwiza amazi ashyushye: Banza ushyire HPMC mu mazi ashyushye kuri 80–90°C, hanyuma ushyiremo amazi akonje kugira ngo akonje hanyuma uyashonge. Ubu buryo bukwiriye imvange ifite ubushyuhe bwinshi kandi bunoza imikorere myiza. Kugira ngo wongere ubushobozi bwo kuyitunganya, HPMC ishobora gutoranywa itinda gukemura, bigabanye cyane ibibazo byo gufunga no kunoza imikorere myiza y'umusaruro.

3. Uburyo bwo kunoza uburyo bwo gusiga irangi

HPMC ishobora kunoza uburyo irangi n'ibirungo bishyirwamo bigabanya ubushyuhe n'uburyo ibintu bishyirwamo bishyirwa mu byiciro, ariko isaba ubufatanye n'ibindi birungo biri muri iyo formula:
Mu mavuta menshi ya PVC, ingano ya HPMC yongewemo ishobora kongerwa neza kugira ngo yongere ubushobozi bwo kubika neza.
Bitandukanye na sisitemu zo gukurura eteri za cellulose, HPMC ishobora kwanduzwa n'umunyu na iyoni za kalisiyumu; bityo, HPMC ifite umunyu igomba gutoranywa mu sisitemu zifite amazi akomeye cyane cyangwa CaCO₃ nyinshi.
Iyo irangi rigaragaje ububyibuho butari bwo, pH ishobora kwiyongera neza cyangwa hagakoreshwa uburyo bwo guhindura imiterere y'amaraso kugira ngo hakorwe neza uburyo bwo kugarura ubushyuhe.

4. Kunoza ikoreshwa rya Brush n'ubwiza bwa Filime

HPMC ifite ubushobozi bwiza bwo gukaraba no gukaraba, ibyo bikaba bishobora kunoza imiterere y'uburoso no kongera uburyo bwo gutwikira. Uburyo bwo kuyikoresha burimo:
Mu buryo bwo gukoresha inshuro nyinshi (nk'imyambaro y'ubuhanga), ubushyuhe bushobora kugabanuka gato kugira ngo hongere uburyo bworoshye bwo gukoresha imashini.
Kugira ngo hongerwe uburyo bwo kugorora, HPMC ishobora kongerwamo HEUR cyangwa ASE-type thickeners kugira ngo habeho imiterere ikwiye ya rheological.
Iyo ushyira irangi ahantu humutse, kongera ingano ya HPMC bifasha kunoza uburyo amazi abikwamo kandi bikarinda impande zumutse, ibisebe byo mu bwoko bwa brush, cyangwa inenge zo mu bwoko bwa firime.

5. Genzura neza umubare w'amafaranga yongeweho

Muri rusange, umubare w’inyongera za HPMC ku irangi ry’imbere ku rukuta ni hagati ya 0.2–0.5%, mu gihe ku nkuta zo hanze zishobora kongerwaho 0.3–0.6%. Ariko, hagomba gukorwa impinduka hashingiwe ku bwoko bwa PVC, irangi, ibintu byuzuza, n’uburyo bwo gukuba. Kongeramo cyane bishobora gutuma irangi ritagenda neza, rigatuma rimara igihe kirekire, ndetse rigafatana.

6. Gukoresha neza hamwe n'izindi mashini zigabanya ubukana

Uburyo bwiza bwo gusiga amarangi akenshi bushingiye ku ruvange rw'ibintu bigabanya ubukana bw'irangi.HPMCIkora ku buryo amazi agabanuka kuva ku rugero rwo hagati kugeza ku rundi; HEUR ikora ku buryo amazi agabanuka cyane; naho ASE itanga inyungu ku giciro. Guhuza ibi bitatu bitanga ishusho nziza ya rheological, bigatuma irangi ritagwa kandi ryoroshye kurishyira.