hydroxypropyl methylcellulose (HPMC) muri plaster yoroheje ishingiye kuri gypsum

Plasta yoroheje ishingiye kuri gypsum ni ibikoresho by'ubwubatsi bitangiza ibidukikije bikoreshwa cyane mu gupima inkuta z'imbere, uburyo bwo gukingira no gutunganya ishingiro ry'imitako. Ikozwe muri gypsum nk'ibikoresho by'ingenzi byo gusima, ikongerwamo ibintu byoroheje (nk'ibice bya perlite, microspheres za vitrified, imipira ya foam, nibindi). Bitewe n'imiterere ya gypsum ubwayo, nko gufungana vuba no gukomera, umuvuduko munini wo kugabanuka, no koroshya gusya, kugira ngo kunoze imikorere yayo n'ubwiza bwayo, ubusanzwe ni ngombwa kongeramo ibintu bitandukanye kugira ngo inoze imikorere yayo. Muri byo harimo:hydroxypropyl methylcellulose (HPMC), nk'ikintu cy'ingenzi cya cellulose ether, kigira uruhare rudasimburwa muri plaster yoroheje ishingiye kuri gypsum.

1. Imiterere y'ibanze ya HPMC

HPMC ni polymer idashonga mu mazi ikorwa binyuze mu guhindura etherification ya cellulose karemano ifite molekile nyinshi. Ifite ubushobozi bwo kubika amazi neza, gukomera, gusya, gukora filime no kuyihagarika. Akenshi yongerwa mu buryo bw'ifu mu gishishwa cya plaster, mortier n'ibindi bikoresho byumye bivanze, kandi irabyimba kandi igashonga vuba iyo ihuye n'amazi kugira ngo igire uruhare.

2. Uruhare runini rwa HPMC mu gusigwa kworoheje gushingiye kuri gypsum

2.1. Kongera ubushobozi bwo kubika amazi no kongera igihe cyo kuyakoresha

Gypsum ifite igihe gito cyo kuyishyiraho kandi ifata amazi menshi, kandi ikunze kubura amazi vuba mu gihe cyo kuyiyubaka, bigatera ibibazo nko kwangirika no kuyasya. HPMC ifite amazi meza kandi ishobora gukora agace k'amazi gasa n'akanya gato mu gishanga, ikagabanya kwinjira kw'amazi mu gice cy'amazi, kandi igatinza amazi aturuka mu kirere, bityo:

Kugenzura neza uburyo gypsum ikora neza kandi ikongera imbaraga z'ibikoresho;

Kugabanya imikurire igabanuka no kunoza ubwiza bugaragara;

Kongera igihe cyo gukora imirimo y'ubwubatsi, kunoza imikorere myiza y'akazi no guhuza n'imiterere y'ubwubatsi, cyane cyane mu bushyuhe bwinshi n'ahantu humutse.

2.2. Kunoza ubwubatsi no gukora neza

HPMC ishobora kunoza cyane imiterere n'ubucucike bwa plaster ya gypsum, bigatuma plaster yayo irushaho kuba nziza kandi ikagira amazi menshi. By'umwihariko, bigaragazwa muri:

Biroroshye gukangura no gushyiramo, biroroshye gushyiramo;

Gabanya ibintu bigwa nabi kandi bigahinduka ifu;

Menya neza ko sima iri ku rukuta ingana kandi urusheho kunoza ubuso.

2.3. Kunoza ubushobozi bwo gufatana no kurwanya kugwa kw'ibiceri

HPMC ishobora gukora firime nziza yo gushyiramo amazi hagati y’urutare n’urukuta, ikanoza uburyo plaster n’urukuta bifatanye, bityo ikaba nziza:

Kugabanya ibibazo byo kuzura no kugwa;

Kongera ubushobozi bwo kwirinda kugwa mu miterere y'ubuso buhagaze, bigatuma ibikoresho bigabanuka, ibyo bikaba byiza mu miterere y'ubuso bunini;

Fasha gukora urwego rwo kurangiza rurerure kandi rufite ubugari.

2.4. Hindura imiterere n'uburyo birushaho gukomera

HPMC ifite ubushobozi bwo kugenzura ubushyuhe bw'umuti. Iyo imaze gushonga mu mazi, ikora sisitemu ya viscoelastic colloid, ituma gypsum yose ihagarara neza, ikarinda gutandukana no gutandukana, kandi ikanoza ingano y'ibikoresho. Muri icyo gihe, hakurikijwe urwego rw'ubushyuhe n'ingano y'ubwoko butandukanye bwa HPMC, abakoresha bashobora guhindura uburyo bworoshye imiterere y'ubushyuhe kugira ngo ihuze n'uburyo butandukanye bwo kubaka (nk'ubushyuhe bw'intoki no gutera imashini).

2.5. Kunoza uburyo bwo kurwanya imiyoboro nyuma yo kubaka

Plasta yoroheje ishingiye kuri gypsum ikunze kugabanuka bitewe n'uko ifatanye neza kandi ikaba ifite umuvuduko munini wo kugabanuka. HPMC ishobora kugabanya stress complexity no gucikamo ibice binyuze mu kongera amazi abikwa, gutinda gushyiraho no koroshya imikorere. Byongeye kandi, HPMC ishobora no kunoza uburyo plasta idahinduka, bigatuma irushaho kuba nziza mu bidukikije bitandukanye.

3. Amabwiriza yo kwirinda gukoresha HPMC

Uburyo bwo kongeramo: HPMC muri rusange ivangwa n'izindi fu mbere y'igihe nk'igice cy'imvange yumye. Ntibyemewe kuyishyira mu mazi no kuyivanga kugira ngo hirindwe kwivanga.

Kugenzura igipimo: Kongeramo cyane bishobora gutuma igihe cyo gufungana gikabije, imbaraga zigabanuka, no kugabanya gufatana. Igipimo gisabwa muri rusange ni 0.1% ~ 0.5%.

Guhitamo icyitegererezo: HPMC ifite ubukana butandukanye n'ibipimo byo gusimbuza igomba gutoranywa hakurikijwe imiterere y'igicuruzwa kugira ngo harebwe imikorere y'ubwubatsi n'imikorere y'igicuruzwa cyarangiye.

4. Akamaro ka HPMC mu guteza imbere ibikoresho by'ubwubatsi bitubahiriza ibidukikije

Muri iki gihe cyo gushyigikira ibikorwa byo kuzigama ingufu no kubungabunga ibidukikije, plasta yoroheje ishingiye kuri gypsum ikoreshwa cyane mu nyubako zidafite ibidukikije bitewe n'inyungu zayo z'umutungo ushobora kongera gukoreshwa, imyuka ihumanya ikirere mike, ndetse n'uburyohe bwiza. HPMC, nk'inyongeramusaruro ikomeye mu buryo bwa gypsum plasta, ntiyongera gusa imikorere yayo, ahubwo inanoza imikorere yayo mu bwubatsi no mu buryo ikoreshwamo ibikoresho, igabanya imyanda y'umutungo iterwa no kuvugurura, kandi ni ingenzi mu guteza imbere iterambere rirambye ry'ibikoresho by'ubwubatsi bidafite ibidukikije.

Hydroxypropyl methylcellulose (HPMC) igira uruhare runini mu gusigwa kworoheje gushingiye kuri gypsum, harimo kubika amazi, gukurura, gushyira amavuta mu mavuta, kurwanya kugwa no kongera imbaraga zo gufatanya, ibyo bikaba birushaho kunoza imikorere, imiterere y’imashini n’igihe cyo kuyikoresha. Bitewe n’ubwiyongere bw’ibikenewe byoroheje, bizigama ingufu kandi bitangiza ibidukikije mu nganda z’ubwubatsi, akamaro ka HPMC muri sisitemu zishingiye kuri gypsum kazarushaho kugaragara, kandi agaciro kayo mu bya tekiniki n’umwanya wo kuyikoresha ku isoko bizakomeza kwaguka. Guhitamo no gukoresha neza HPMC bizatanga urufatiro rukomeye rwo kunoza imikorere ya sisitemu za gypsum no kwemeza ireme ry’imishinga y’ubwubatsi.