Imashini igabanya ubushyuhe bw'irangi rya latex igomba kuba ihuye neza n'umusemburo wa emulsion polymer, bitabaye ibyo firime yo gusiga irangi izaba ifite agace gato k'inyuma, kandi ikazatanga uduce duto tudahinduka, bizagabanya ubushyuhe bw'ikirahure kandi bikorohe ingano y'uduce. Imashini igabanya ubushyuhe bw'ikirahure izahindura imbaraga za emulsion. Urugero, imashini igabanya ubushyuhe bw'ikirahure izagira ingaruka zidasubirwaho kuri emulsifier ya anionic kugira ngo ivune emulsion. Imashini igabanya ubushyuhe bw'ikirahure nziza ku irangi rya latex igomba kuba ifite ibi bikurikira:
1. Igipimo gito n'ubushyuhe bwiza
2. Kubika neza, nta kugabanuka kwa viscosity bitewe n'imikorere ya enzymes, kandi nta kugabanuka kwa viscosity bitewe n'impinduka mu bushyuhe n'agaciro ka PH
3, kubika amazi neza, nta kintu kigaragara cy'ibicurane
4. Nta ngaruka mbi ku miterere ya firime nko kwirinda gukaraba, gukaraba, guhisha imbaraga no kwirinda amazi
5. Nta gukurura ibara
Ikoranabuhanga ryo gukurura irangi rya latex ni igipimo cy'ingenzi cyo kunoza ubwiza bwa latex no kugabanya ikiguzi. Hydroxyethyl cellulose ni uburyo bwiza bwo gukurura, bufite ingaruka nyinshi ku gukurura, gutuza no guhindura imikorere y'irangi rya latex.
Mu gikorwa cyo gukora irangi rya latex,selulose ya hydroxyethyl (HEC)Ikoreshwa nk'ikintu gikwirakwiza, gikonjesha kandi gihagarika irangi kugira ngo ihamye ubukana bw'umusaruro, igabanye intera, igatuma icyuma cy'irangi kirushaho kuba cyiza kandi gitunganye, kandi igatuma irangi rya latex riramba. Rheology nziza, ishobora kwihanganira imbaraga nyinshi zo gukata, kandi ishobora gutanga uburyo bwiza bwo kugabanya, kurwanya gushwara no guhuza irangi. Muri icyo gihe, HEC ifite ubushobozi bwo gukora neza, kandi irangi rya latex ryakonjeshejwe na HEC rifite ubushobozi bwo gukora nk'iry'ubudodo, kuzunguruka, kuzuza no gutera amavuta bifite akamaro ko kugabanya igihe cyo gukora, ntibyoroshye koza no kugwa, kandi ntibisiga cyane. HEC ifite iterambere ryiza ry'amabara. Ifite ubushobozi bwo kuvanga neza irangi ry'amabara menshi n'ibifunga, bigatuma bishoboka gukora irangi rya latex rifite ubuziranenge n'ubudahinduka bw'amabara. Kubera ko ikoreshwa mu buryo butandukanye, ni ether idafite ionic. Kubwibyo, ishobora gukoreshwa mu rugero rwa pH runini (2 ~ 12), kandi ishobora kuvangwa n'ibice by'irangi rusange rya latex nka pigments zikora, inyongeramusaruro, umunyu ushongesha cyangwa electrolytes.
Nta ngaruka mbi igira ku gipfundikizo cyo gusiga. Kubera ko umuti w'amazi wa HEC ufite imiterere igaragara y'ubushyuhe bw'amazi, ntabwo byoroshye kuwufuroza mu gihe cyo kuwukora no kubaka, kandi imiterere y'imyobo n'ibirunga byo mu birunga ni mike.
Kubika neza. Mu gihe kirekire cyo kubika, ibara rishobora gutandukana no kwihagarika, kandi nta kibazo cy'ibara rigenda riguruka no kurabya. Iyo hari urwego ruto rw'amazi ku buso bw'irangi kandi ubushyuhe bwo kubika buhinduka cyane. Ubushyuhe bwaryo buracyari buhamye.
HEC ishobora kongera agaciro ka PVC (ingano y'ibara ry'umuhondo) kugeza kuri 50-60%. Byongeye kandi, irangi rikozwe mu mazi rishobora no gukoresha HEC.
Kugeza ubu, ibikoresho bigabanya ubushyuhe bikoreshwa mu irangi rya latex ryo mu rugo ni HEC na polymeri za acrylic (harimo polyacrylates, homopolymer cyangwa copolymer emulsion thickeners za aside acrylic na aside methacrylic).
Hydroxyethyl cellulose ishobora gukoreshwa mu
1. Nk'icyuma gikingira cyangwa kole irinda
Muri rusange, HEC ifite ubukana bwa mPaS 10 kugeza kuri 30 irakoreshwa. HEC ya 300mPa·S ishobora gukoreshwa hamwe na surfactants za anionic cyangwa cationic, kandi ingaruka zo gukwirakwira ziba nziza kurushaho. Ingano y'ikigereranyo muri rusange ni 0.05% by'uburemere bwa monomer.
2, nk'ikintu gifasha mu kubyibuha
Koresha 15000mPa. Igipimo cy’ikigereranyo cya HEC ifite ubukana bwinshi hejuru ya s ni 0.5 kugeza 1% by’uburemere bwose bw’irangi rya latex, kandi agaciro ka PVC gashobora kugera kuri 60%. Mu irangi rya latex, HEC ya 20Pa,s irakoreshwa, kandi imiterere itandukanye y’irangi rya latex ni yo myiza kurusha izindi. Igiciro cyo gukoresha HEC iri hejuru ya 30O00Pa.s kiri hasi. Ariko, uburinganire n’ibindi biranga irangi rya latex si byiza. Ukurikije ibisabwa ku bwiza no kugabanya ikiguzi, ni byiza gukoresha HEC iri hagati n’iy’ubukana bwinshi hamwe.
3. Uburyo bwo gushyiramo irangi rya latex
HEC yatunganyijwe ku buso ishobora kongerwamo ifu yumye cyangwa iy'urusenda. Ifu yumye yongerwamo mu buryo butaziguye mu gusya irangi. pH y'aho ishyirwamo igomba kuba 7 cyangwa munsi yayo. Ibice bya alkali nk'ibinyabutabire bishobora kongerwamo nyuma yoHECbyatose kandi bigatatanywa neza. Ibiryo bikozwe muri HEC bigomba kuvangwa mu biryo mbere yuko HEC igira igihe gihagije cyo kuvura no gushonga kugeza igihe kidakoreshwa. Ibiryo biryoshye bya HEC bishobora kandi gutegurwa hakoreshejwe imiti ikoreshwa muri glycol.
4. Irangi rya latex rirwanya ubushyuhe
HEC ishonga mu mazi ibora iyo ihuye n'ibimera byihariye bya selulose n'ibikomoka kuri yo. Kongeramo imiti irinda ubushyuhe mu irangi byonyine ntibihagije, ibice byose bigomba kuba bidafite enzymes. Uburyo irangi rya latex rikorwamo bugomba guhora busukuye kandi busukuye, kandi ibikoresho byose bigomba gutozwa buri gihe hakoreshejwe 0.5% formalin cyangwa 0.1% mercure solution.
Igihe cyo kohereza: 25 Mata 2024