Hydroxypropyl Methylcellulose (HPMC) polymer polymer ce da aka saba amfani da ita a cikin kayan gini, musamman mannen tayal na tushen siminti. Abubuwan sinadarai na musamman da kaddarorin jiki na HPMC sun sanya shi taka muhimmiyar rawa wajen haɓaka mannewa, aikin gini, da dorewa na mannen tayal.
(1) Ilimin asali na HPMC
1. Tsarin sunadarai na HPMC
HPMC wani sinadari ne na cellulose da aka samu ta hanyar canza sinadarai na halitta cellulose. Tsarinsa yana samuwa ne ta hanyar methoxy (-OCH₃) da hydroxypropoxy (-CH₂CHOHCH₃) ƙungiyoyi masu maye gurbin wasu rukunin hydroxyl akan sarkar cellulose. Wannan tsarin yana ba HPMC mai kyau solubility da hydration ikon.
2. Kaddarorin jiki na HPMC
Solubility: HPMC na iya narkar da cikin ruwan sanyi don samar da maganin colloidal na gaskiya kuma yana da kyakkyawan hydration da ƙarfin kauri.
Thermogelation: Maganin HPMC zai samar da gel lokacin zafi kuma ya koma yanayin ruwa bayan sanyaya.
Ayyukan saman: HPMC yana da kyakkyawan aiki a cikin bayani, wanda ke taimakawa wajen samar da ingantaccen tsarin kumfa.
Waɗannan kaddarorin na musamman na zahiri da sinadarai sun sa HPMC ya zama kyakkyawan abu don gyaggyara mannen tayal na tushen ciminti.
(2) Injiniyan HPMC na haɓaka aikin adhesives na tushen siminti
1. Inganta riƙe ruwa
Ƙa'ida: HPMC yana samar da tsarin cibiyar sadarwa mai danko a cikin maganin, wanda zai iya kulle danshi yadda ya kamata. Wannan ikon riƙewar ruwa ya faru ne saboda yawancin ƙungiyoyin hydrophilic (kamar ƙungiyoyin hydroxyl) a cikin ƙwayoyin HPMC, waɗanda zasu iya ɗaukar da kuma riƙe babban adadin danshi.
Inganta mannewa: Tushen tayal na siminti yana buƙatar danshi don shiga cikin aikin hydration yayin aikin taurin. HPMC yana kula da kasancewar danshi, yana barin siminti ya cika ruwa sosai, don haka inganta mannewa na m.
Tsawaita lokacin buɗewa: Riƙewar ruwa yana hana mannewa daga bushewa da sauri yayin gini, ƙara lokacin daidaitawa don shimfiɗa tayal.
2. Inganta aikin gini
Ƙa'ida: HPMC yana da sakamako mai kauri mai kyau, kuma ƙwayoyinsa zasu iya samar da tsarin hanyar sadarwa a cikin maganin ruwa mai ruwa, ta haka yana ƙara dankon maganin.
Haɓaka kadarorin hana sagging: slurry mai kauri yana da mafi kyawun kayan hana sagging yayin aikin gini, ta yadda fale-falen za su iya tsayawa a tsaye a cikin ƙayyadaddun matsayi yayin aikin shimfidawa kuma ba za su zame ƙasa ba saboda nauyi.
Inganta haɓakar ruwa: Danko mai dacewa yana sa manne mai sauƙin amfani da yadawa yayin gini, kuma a lokaci guda yana da kyakkyawan aiki, yana rage wahalar gini.
3. Inganta karko
Ƙa'ida: HPMC yana haɓaka riƙewar ruwa da mannewa na manne, ta haka yana inganta ɗorewa na tushen tayal na siminti.
Inganta ƙarfin haɗin kai: Cikakken ruwan siminti na samar da mannewa mai ƙarfi kuma baya saurin faɗuwa ko faɗuwa yayin amfani na dogon lokaci.
Enhance crack resistance: Kyakkyawan riƙe ruwa yana guje wa raguwa mai yawa na abin da ake amfani da shi a lokacin aikin bushewa, ta haka ne ya rage matsalar tsagewar da ke haifar da raguwa.
(3) Goyan bayan bayanan gwaji
1. Gwajin rike ruwa
Nazarin ya nuna cewa yawan riƙon ruwa na mannen tayal na siminti tare da ƙari na HPMC yana inganta sosai. Misali, ƙara 0.2% HPMC zuwa manne zai iya ƙara yawan riƙe ruwa daga 70% zuwa 95%. Wannan haɓakawa yana da mahimmanci don haɓaka ƙarfin haɗin gwiwa da dorewa na manne.
2. Gwajin danko
Adadin da aka ƙara na HPMC yana da tasiri mai mahimmanci akan danko. Ƙara 0.3% HPMC zuwa mannen tayal na tushen siminti na iya ƙara danko sau da yawa, tabbatar da cewa manne yana da kyakkyawan aikin hana sagging da aikin gini.
3. Gwajin ƙarfin haɗin gwiwa
Ta hanyar gwaje-gwajen kwatankwacin, an gano cewa ƙarfin haɗin kai tsakanin fale-falen fale-falen buraka da abubuwan adhesives ɗin da ke ɗauke da HPMC ya fi na adhesives ba tare da HPMC ba. Misali, bayan ƙara 0.5% HPMC, ana iya ƙara ƙarfin haɗin gwiwa da kusan 30%.
(4) Misalai na aikace-aikace
1. Kwance fale-falen bene da fale-falen bango
A cikin ainihin shimfidar fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen fale-falen, HPMC-ingantattun kayan aikin siminti na tushen fale-falen buraka sun nuna ingantaccen aikin gini da haɗin gwiwa mai dorewa. A lokacin aikin gine-gine, mannewa ba shi da sauƙi don rasa ruwa da sauri, yana tabbatar da gyare-gyaren gine-gine da kuma shimfiɗar tayal.
2. Tsarin rufin bango na waje
Hakanan ana amfani da manne da aka haɓaka HPMC a cikin tsarin rufe bango na waje. Kyakkyawan riƙewar ruwa da mannewa yana tabbatar da haɗin gwiwa mai ƙarfi tsakanin katako mai rufi da bango, don haka inganta haɓakawa da kwanciyar hankali na tsarin bangon bango na waje.
Aikace-aikacen HPMC a cikin mannen tayal na tushen siminti yana inganta aikin abin ɗamara sosai. Ta hanyar haɓaka riƙon ruwa, haɓaka aikin gini da haɓaka ɗorewa, HPMC yana sanya mannen tile na tushen siminti ya fi dacewa da buƙatun gini na zamani. Tare da haɓaka fasahar fasaha da haɓaka buƙatun kayan gini masu inganci, buƙatun aikace-aikacen HPMC za su fi girma.
Lokacin aikawa: Yuni-26-2024