Bayanin Haɗin Gwargwadon Kai

Matsakaicin matakin matakin kai, kayan aiki masu mahimmanci a aikin injiniyan shimfidar bene na zamani, galibi ana ƙira su daga siminti na Portland, ƙaƙƙarfan aggregates, polymers masu aiki, da ƙari na musamman. Abubuwan da suka dace da su na musamman sun fito ne daga slurry mai ƙarfi da aka kafa bayan haɗuwa, wanda zai iya daidaitawa ta atomatik a ƙarƙashin nauyi don ƙirƙirar santsi mai santsi tare da kauri daga 3mm zuwa 50mm.

Aikace-aikace na yau da kullun sun haɗa da shuke-shuken masana'antu (misali, madaidaicin benaye a wuraren masana'antar kera motoci), wuraren kasuwanci (misali, manyan benaye masu jurewa a cikin manyan kantunan kantuna), da manyan ayyukan zama (misali, matakan daidaita tsarin dumama ƙasa).

Amfanin Gina

Idan aka kwatanta da matakan daidaita turmi na gargajiya, mahadi masu daidaita kansu suna haɓaka aikin gini da kashi 40-60%. Halin saurin warkewar su yana rage tsawon lokacin aikin, yana mai da su manufa don "ginin dare - isar da rana mai zuwa" a cikin ayyukan gyare-gyare.

Me yasa ake amfani da HPMC a cikin Haɗin Matsayin Kai? Yaya Aiki yake?

a. Dokokin Riƙe Ruwa

Kwayoyin HPMC suna watsa ruwa ta hanyar haɗin hydrogen, suna samar da hanyar sadarwa mai girma uku wanda ke ƙara yawan riƙon turmi zuwa sama da 90% (idan aka kwatanta da 75% ba tare da HPMC ba). A cikin yanayin zafi mai zafi (> 30 ° C), zaɓin HPMC tare da zafin jiki na gelation ≥65 ° C yana jinkirta ƙawancen ruwa, yana hana asarar ƙarfi saboda rashin isasshen ruwa na siminti.

b. Haɓaka Abubuwan Rheological

• Gudanar da Yawo: Ƙananan danko HPMC (misali, 400Mpas) yana rage yawan damuwa na yawan amfanin ƙasa, cimma ƙimar ƙimar farko na 180-220mm don ƙaddamar da kai na bakin ciki (3-5mm); high-danko iri (misali, 15000Mpas) inganta thixotropy, hana tara sedimentation a lokacin farin ciki-Layer yi (10-50mm) don tabbatar da uniform yawa.

• Tasirin Haɗin kai: Lokacin da aka haɗa tare da masu rage ruwa na polycarboxylate, HPMC ya hana rabuwa. A 0.3% mai rage ruwa da 0.12% HPMC, asarar kwararar mintuna 30 ≤10%, saduwa da buƙatun kwarara masu dogaro da lokaci don daidaita kai.

c. Tsagewa da Hana Fasa

Ta hanyar jinkirta siminti hydration (tsawaita lokacin saitin farko da mintuna 15-30), HPMC yana rage damuwa da saurin raguwa da sama da 30%.A cikin gwaje-gwajen bushewar bushewa, turmi tare da HPMC suna nuna ƙimar raguwar kwanaki 28 na 0.018%, ƙasa da ƙasa da 0.035% don samfuran da ba HPMC ba, yadda ya kamata rage ƙananan fashewa.

Yadda za a zabi HPMC daidai don dacewa daban-daban Yanayin Gina Tsarin Gina Kai?

Masana'antu-sa HPMC an classified da danko na su 2% ruwa bayani a cikin low-danko ( 30000Mpas) iri, cating zuwa daban-daban gini bukatun.

Ma'aunin Maɓallidon Gine-gine daban-dabanHalin yanayi

Misalin Ƙirƙira (Gypsum-Bassan Matsayin Kai):Rubutun tushe: α-hemihydrate gypsum 60%, calcium carbonate 30%, yashi ma'adini (80-120 raga) 10%; Additives: HPMC (20000mPa·s, 0.18%), retarder (tartaric acid, 0.05%), mai rage ruwa (na tushen melamine, 0.3%).(Wannan don tunani ne kawai) 

Kammalawa

A matsayin babban abin ƙari na aiki a cikin mahadi masu daidaita kai,HPMCyana tasiri aikin kayan aiki a duk lokacin shirye-shirye, gini, da rayuwar sabis. Tare da karuwar buƙatun madaidaicin bene a cikin ginin masana'antu,HPMCzaɓi da fasahar aikace-aikacen za su zama mafi tsabta da hankali.