Putty powder off vuto la ufa

De-ufa ndi kuyera kwa khoma lamkati la putty ufa ndizovuta kwambiri pakapangidwe ka putty.Kuti timvetse zifukwa za mkati khoma putty ufa de-ufa, munthu ayenera choyamba kumvetsa zofunika zopangira zigawo zikuluzikulu ndi kuchiritsa mfundo za mkati khoma putty ufa, ndiyeno kuphatikiza Panthawi yomanga putty, youma kwa khoma pamwamba, mlingo mayamwidwe madzi, kutentha. , kuuma kwa nyengo, ndi zina zotero, fufuzani zifukwa zazikulu za kugwa kwa ufa wa putty pakhoma lamkati ndikugwiritsa ntchito njira yofananira kuthetsa vuto la ufa wa ufa wa putty.

Zoyambira zopangira mkati mwa khoma putty powder:

Zosakaniza zoyambira mkati mwa khoma la putty ufa ndi monga: zida zomangira zamkati (kashiamu phulusa), zodzaza (ufa wolemera wa calcium, ufa wa talcum, ndi zina) zowonjezera za polima (HPMC, mowa wa polyvinyl, ufa wa rabara, ndi zina).

Pakati pawo, mkati mwa khoma la putty ufa nthawi zambiri sawonjezera simenti yoyera kapena amangowonjezera simenti yoyera.Redispersible latex ufa umakhala ndi mphamvu zochepa pa mlingo wochepa, choncho sugwiritsidwa ntchito mkati mwa khoma la putty ufa makamaka chifukwa cha mtengo wake, kapena sugwiritsidwa ntchito kawirikawiri.

Chifukwa chake chifukwa cha vuto la khoma lamkati la putty powder formula yokha:

1. Zipangizo zomangira zitsulo, monga kuwonjezera phulusa la calcium ndizochepa kwambiri, ndipo khalidwe la phulusa la calcium silili loyenera;

2. Ngati kuchuluka kwa chigawo chomangirira muzowonjezera za polima ndi chochepa kwambiri kapena khalidwe silili loyenera, lingapangitse ufa wa putty pakhoma lamkati kugwa.

Agawidwa m'mbali zotsatirazi:

01. Mphamvu yomatira ya putty sikokwanira kuyambitsa kuchotsa ufa.Wopanga amachepetsa mtengo mwakhungu.Mphamvu zomatira za ufa wa mphira ndizosauka ndipo kuchuluka kwake kumakhala kochepa, makamaka kwa khoma lamkati la putty.Ubwino wa ufa wa rabara ndi guluu umagwirizana kwambiri ndi kuchuluka komwe kwawonjezeredwa.

02. Mapangidwe apangidwe ndi osamveka, vuto la kusankha zinthu ndi mapangidwe ndizofunikira kwambiri mu ndondomeko ya putty.Mwachitsanzo, hydroxypropyl methylcellulose (HPMC) imagwiritsidwa ntchito ngati putty yopanda madzi pakhoma lamkati.Ngakhale HPMC ndi yokwera mtengo kwambiri, siigwira ntchito kwa fillers monga ufa wawiri fly, talcum powder, wollastonite powder, etc. Ngati HPMC ikugwiritsidwa ntchito, imayambitsa delamination.Komabe, CMC ndi CMS zokhala ndi mitengo yotsika sizimachotsa ufa, koma CMC ndi CMS sizingagwiritsidwe ntchito ngati putty yopanda madzi, komanso sizingagwiritsidwe ntchito ngati khoma lakunja, chifukwa CMC ndi CMS zimachita ndi ufa wa imvi wa calcium ndi simenti yoyera, zomwe zingayambitse. delamination.Palinso ma polyacrylamide omwe amawonjezedwa ku ufa wa laimu wa calcium ndi simenti yoyera ngati zokutira zopanda madzi, zomwe zingayambitsenso kutulutsa kwamafuta kumayambitsa kuchotsedwa kwa ufa.

03. Kusakaniza kosagwirizana ndi kugwedeza ndi chifukwa chachikulu cha kuchotsa ufa wa putty mkati ndi kunja kwa makoma.Opanga ena mdziko muno amatulutsa ufa wa putty ndi zida zosavuta komanso zosiyanasiyana.Sizida zapadera zosanganikirana, ndipo kusakanikirana kosagwirizana kumayambitsa kuchotsa ufa wa putty.

04. Cholakwika pakupanga kumapangitsa kuti putty akhale ufa.Ngati chosakanizira chosakanizira chilibe ntchito yoyeretsa ndipo pali zotsalira zambiri, CMC mu putty wamba idzachitapo kanthu ndi ufa wa phulusa la calcium mu putty wosalowa madzi.CMC, CMS ndi Simenti yoyera ya kunja kwa khoma la putty imakhudzidwa ndikupangitsa kuti ufa uwonongeke.Zida zapadera zamakampani ena zili ndi doko loyeretsera, lomwe limatha kuyeretsa zotsalira mu makinawo, osati kutsimikizira mtundu wa putty, komanso kugwiritsa ntchito makina amodzi pazolinga zingapo, ndikugula zida chimodzi kuti apange mitundu yosiyanasiyana. putty.

05. Ubwino wa zodzaza ndizosavuta kuyambitsa de-ufa.Ma fillers ambiri amagwiritsidwa ntchito mkati ndi kunja kwa khoma putty, koma zomwe zili mu Ca2CO3 mu ufa wolemera wa calcium ndi talc ufa m'malo osiyanasiyana ndizosiyana, ndipo kusiyana kwa pH kumayambitsanso kutulutsa ufa wa putty, monga Chongqing ndi Mkati mwa khoma la Chengdu ufa wa putty umagwiritsa ntchito ufa wa rabara womwewo, koma ufa wa talcum ndi ufa wolemera wa calcium ndizosiyana.Simawotcha ufa ku Chongqing, koma imatulutsa ufa ku Chengdu.Simawotcha ufa ku Henan ndi kumpoto chakum'mawa kwa China, koma m'malo ena amachotsa ufa.

06. Chifukwa cha nyengo ndi chifukwa cha kuchotsa ufa wa putty pamakoma amkati ndi akunja.Mwachitsanzo, putty pamakoma amkati ndi akunja amakhala ndi nyengo youma komanso mpweya wabwino m'malo ena owuma kumpoto.Madera ena amakhala ndi nyengo yamvula, chinyezi chanthawi yayitali, zinthu zopanga filimu za putty sizili zabwino, komanso zimataya ufa, kotero madera ena ndi oyenera kuyika madzi osakanizidwa ndi phulusa la calcium.

07. Zomangamanga zamtundu monga imvi calcium ufa ndi simenti yoyera ndi zonyansa ndipo zimakhala ndi ufa wambiri wa Shuangfei.Zomwe zimatchedwa multi-functional gray calcium powder ndi multifunctional white simenti pamsika ndizodetsedwa, chifukwa kuchuluka kwa zomangira zonyansazi zimagwiritsidwa ntchito, ndipo ma putty osalowa madzi amkati ndi kunja kwa makoma akunja adzakhala opanda ufa. osati madzi.

08. M'chilimwe, kusungirako madzi a putty pakhoma lakunja sikokwanira, makamaka m'malo otentha kwambiri komanso olowera mpweya monga zitseko ndi mazenera.Nthawi yoyamba yoyika phulusa la calcium ufa ndi simenti sikokwanira, ndipo madzi adzatayika.Ngati sichisamalidwa bwino, idzakhalanso ufa wochuluka .