Gushyira mubikorwa kwinjiza selile

Irangi rya Latex ni uruvange rwa pigment, ikwirakwizwa ryuzuza hamwe na polymer ikwirakwizwa, kandi inyongeramusaruro zigomba gukoreshwa kugirango uhindure ububobere bwacyo kugirango bugire imiterere ya rheologiya isabwa kuri buri cyiciro cyibikorwa, kubika no kubaka.Ibintu byongeweho mubisanzwe byitwa umubyimba, bishobora kongera ubwiza bwimyenda kandi bikanonosora imiterere ya rheologiya yimyenda, bityo nanone byitwa rheologiya.

Ibikurikira byerekana gusa ibintu nyamukuru biranga selile ikoreshwa cyane hamwe no kuyikoresha mugushushanya.

Ibikoresho bya selile bishobora gukoreshwa mubitambaro birimo methyl selulose, hydroxyethyl selulose, na hydroxypropyl methyl selulose.Ikintu kinini kiranga selile ya selile ni uko kubyibuha bitangaje, kandi birashobora guha irangi ingaruka runaka yo kugumana amazi, bishobora gutinza igihe cyo kumisha irangi kurwego runaka, kandi bigatuma irangi rifite thixotropy runaka, kubuza irangi gukama.Imvura igwa no gutondekanya mugihe cyo kubika, icyakora, ibibyimbye nabyo bifite ingaruka zo kutaringaniza irangi, cyane cyane iyo ukoresheje amanota menshi.

Cellulose ni intungamubiri za mikorobe, bityo ingamba zo kurwanya mildew zigomba gushimangirwa mugihe uyikoresheje.Umubyimba wa selile urashobora gusa kubyimba icyiciro cyamazi, ariko ntugire ingaruka zo kubyimba mubindi bice bigize irangi rishingiye kumazi, ntanubwo bishobora gutera imikoranire igaragara hagati ya pigment nuduce twa emulioni mu irangi, kuburyo bidashobora guhindura imvugo y irangi. , Mubisanzwe, irashobora kongera gusa ubwiza bwikibiriti ku gipimo gito kandi giciriritse (bakunze kwita KU viscosity).

1. Hydroxyethyl selulose

Ibisobanuro hamwe nicyitegererezo cyibicuruzwa bya hydroxyethyl selulose bitandukanijwe cyane cyane nurwego rwo gusimbuza no kwiyegeranya.Usibye itandukaniro ryubwiza, ubwoko bwa hydroxyethyl selulose burashobora kugabanywa muburyo busanzwe bwo gukemuka, ubwoko bwihuse bwihuse nubwoko butajegajega bwibinyabuzima binyuze muguhindura mubikorwa.Kubijyanye nuburyo bwo gukoresha, hydroxyethyl selulose irashobora kongerwaho mubyiciro bitandukanye mugikorwa cyo gutwikira.Ubwoko bwihuta-bwihuse bushobora kongerwaho muburyo bwa poro yumye, ariko agaciro ka pH ya sisitemu mbere yo kongeramo igomba kuba munsi ya 7, cyane cyane ko hydroxyethyl selulose ishonga buhoro buhoro ku giciro gito cya pH, kandi hari igihe gihagije cyo amazi kugirango yinjire imbere mubice, hanyuma wongere agaciro ka pH kugirango ushire vuba.Intambwe ijyanye nayo irashobora gukoreshwa mugutegura ubunini bwa kole hanyuma ukayongera kuri sisitemu yo gusiga irangi.

2. Hydroxypropyl Methyl Cellulose

Ingaruka yibyibushye ya hydroxypropyl methylcellulose ahanini isa nkiya hydroxyethylcellulose, ni ukuvuga kongera ubwiza bwikibiriti ku gipimo gito kandi giciriritse.Hydroxypropyl methylcellulose irwanya kwangirika kwa enzymatique, ariko ubushobozi bwayo bwamazi ntabwo ari bwiza nkubwa hydroxyethyl selulose, kandi bufite ingaruka mbi zo gutera iyo bishyushye.Kuri hydroxypropyl methylcellulose itunganijwe hejuru, irashobora kongerwaho mumazi mugihe ikoreshejwe, nyuma yo kuyikurura no kuyitatanya, ongeramo ibintu bya alkaline nkamazi ya amoniya, uhindure agaciro ka pH kuri 8-9, hanyuma ubireke kugeza bishonge burundu.Kuri hydroxypropyl methylcellulose itavuwe hejuru, irashobora gushiramo no kubyimba amazi ashyushye hejuru ya 85 ° C mbere yo kuyakoresha, hanyuma igakonjeshwa nubushyuhe bwicyumba, hanyuma ikayungurura amazi akonje cyangwa amazi ya barafu kugirango ayashonga burundu.

3. Methyl selulose

Methylcellulose ifite imiterere isa na hydroxypropylmethylcellulose, ariko ntabwo ihagaze neza mubwiza n'ubushyuhe.

Hydroxyethyl selulose niyo ikoreshwa cyane mubyimbye mu irangi rya latex, kandi ikoreshwa mumarangi maremare, aringaniye kandi yo hasi ya latx irangi hamwe nububiko bwubaka bwa latx.Byakoreshejwe cyane mubyimbye byamabara asanzwe ya latx, ifu ya calcium yifu ya latx irangi, nibindi. Iya kabiri ni hydroxypropyl methylcellulose, nayo ikoreshwa muburyo runaka bitewe no kuzamura ibicuruzwa.Methyl selulose ntabwo ikoreshwa cyane mu gusiga amarangi ya latex, ariko ikoreshwa cyane muri powdery imbere ndetse no hanze yurukuta rwinyuma kubera guhita isenyuka no gufata neza amazi.Methyl selulose-yuzuye cyane irashobora guha putty hamwe na thixotropy idasanzwe hamwe no kubika amazi, bigatuma igira ibintu byiza byo gusiba.