Hydroxypropyl hmoov txhuv nplej siab ether (HPS) yog ib qho tshuaj siv tshuaj ntxiv hauv cov khoom siv hauv tsev thiab ua lub luag haujlwm tseem ceeb hauv mortars. Nws yog cov hmoov txhuv nplej siab hloov kho uas txhim kho cov solubility, viscosity thiab rheological zog ntawm cov hmoov txhuv nplej siab los ntawm kev qhia cov pab pawg hydroxypropyl rau hauv cov hmoov txhuv nplej siab molecular. Cov khoom no ua rau daim ntawv thov ntawm hydroxypropyl starch ether hauv mortar ntau yam zoo.
1. Txhim kho dej tuav
Ib qho ntawm cov haujlwm tseem ceeb tshaj plaws ntawm hydroxypropyl starch ether yog txhawm rau txhim kho cov dej tuav ntawm mortar. Ntxiv HPS rau mortar tuaj yeem txhim kho cov dej noo khaws cia ntawm cov tshuaj khib nyiab. Cov cuab yeej no muaj qhov cuam tshuam tseem ceeb rau kev tsim kho thiab kev ua haujlwm ntawm cov khoom siv. Kev tuav dej ntau ntxiv pab tau:
Txuas lub sijhawm ua haujlwm (qhib lub sijhawm qhib) ntawm mortar: Thaum lub sijhawm tsim kho, cov dej evaporation ntawm cov mortar ceev heev yuav ua rau cov mortar poob dej thaum ntxov, yog li txo nws lub sijhawm ua haujlwm. HPS tswj cov dej kom zoo, ua kom cov neeg thov muaj sijhawm txaus los thov thiab kho.
Txo kom qhuav tawg: Yog hais tias lub mortar poob dej sai heev thaum lub sij hawm hardening txheej txheem, qhuav cracking yuav yooj yim tshwm sim, cuam tshuam rau qhov kawg nto zoo thiab structural zog. Lub peev xwm tuav dej ntawm HPS tuaj yeem tiv thaiv qhov no kom tsis txhob tshwm sim.
2. Txhim kho kev tsim kho kev ua haujlwm
Hydroxypropyl starch ether kuj tseem tuaj yeem txhim kho kev tsim kho ntawm mortar. Qhov no suav nrog cov yam xws li cov khoom rheological, lubricity thiab viscosity tswj ntawm cov tshuaj khib. Kev ua haujlwm tshwj xeeb yog:
Txhim kho fluidity thiab sag tsis kam: HPS tuaj yeem ua kom cov dej ntws ntawm cov mortar, ua kom yooj yim rau kev sib kis thaum tsim kho. Nyob rau tib lub sijhawm, vim tias nws tuaj yeem txhim kho qhov viscosity ntawm mortar, nws tuaj yeem tiv thaiv cov mortar los ntawm sagging ntawm ntsug qhov chaw thiab tswj kom muaj kev sib kis tau zoo thiab ntsug nto stability.
Txhim kho lubricity: Thaum lub sij hawm tsim kho, lubricity ntawm mortar pab txo kev sib txhuam thaum lub sij hawm tsim kho thiab ua rau daim ntawv thov smoother, yog li txo cov kev tsim kho nyuaj thiab txhim kho efficiency.
Tswj viscosity: HPS tuaj yeem tswj tau qhov viscosity ntawm mortar, kom nws muaj fluidity zoo thiab tuaj yeem ua kom ruaj khov sai tom qab kev tsim kho ua haujlwm los tsim cov qauv ruaj khov.
3. Txhim khu kev sib txuas
Txhim kho lub zog sib txuas ntawm mortar yog lwm qhov tseem ceeb ntawm HPS. Los ntawm kev txhim kho cov kev sib txuas ntawm cov khoom sib txuas ntawm cov mortar thiab substrate, HPS tuaj yeem:
Txhim kho daim ntawv cog lus muaj zog: Kev txhim kho kev sib raug zoo ntawm cov mortar thiab cov substrate tuaj yeem txhim kho tag nrho lub zog thiab kav ntev ntawm tag nrho cov kab ke. Tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej uas yuav tsum tau muaj kev sib raug zoo siab, HPS tuaj yeem txhim kho qhov kev sib raug zoo ntawm mortar.
Txhim kho adhesion: Thaum siv mortar, HPS tuaj yeem pab cov mortar adhere zoo dua rau saum npoo ntawm cov khoom hauv paus, txo cov delamination thiab shedding ntawm mortar, thiab xyuas kom meej qhov zoo ntawm qhov project.
4. Txhim kho khov-thaw tsis kam
Hydroxypropyl starch ether kuj tseem muaj qhov zoo ntawm cov huab cua tsis kam ntawm mortar. Nws tuaj yeem txhim kho qhov khov-thaw tsis kam ntawm mortar, tshwj xeeb raws li hauv qab no:
Txo kev puas tsuaj los ntawm lub voj voog khov-thaw: Cov dej noo hauv cov mortar yuav nthuav dav thiab cog lus ntau zaus thaum lub voj voog khov-thaw, ua rau kev puas tsuaj rau cov qauv ntawm cov mortar. Cov dej tuav thiab lubricity ntawm HPS tuaj yeem txo qhov kev puas tsuaj ntawm cov dej rau hauv cov txheej txheem mortar thaum lub sij hawm khov thiab txhim kho qhov khov-thaw tsis kam ntawm mortar.
Txhim kho durability: Los ntawm kev txo qhov khov-thaw kev puas tsuaj, HPS pab txhim kho lub sij hawm ntev ntawm mortar, tso cai rau nws kom muaj kev ua tau zoo hauv ntau qhov chaw hnyav.
5. Muab kev tsim kho kom zoo
Kev siv HPS hauv mortar kuj ua rau kev tsim kho zoo dua. Qhov no feem ntau yog tshwm sim hauv:
Yooj yim rau do thiab sib tov: Qhov sib ntxiv ntawm HPS ua rau cov mortar ntau dua thaum sib xyaw, txo cov npuas thiab cov khoom hauv cov tshuaj khib nyiab, yog li txhim kho cov kev sib xyaw ntawm kev sib xyaw.
Txo los ntshav: Cov ntshav hauv cov mortar yuav ua rau cov yeeb yaj kiab dej tshwm rau ntawm cov tshuaj khib, yog li cuam tshuam rau kev tsim kho kom zoo. HPS tuaj yeem cuam tshuam los ntshav thiab tswj qhov sib xws thiab ruaj khov ntawm mortar.
6. Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
Raws li ib puag ncig tus phooj ywg additive, hydroxypropyl starch ether yog nrov heev hauv cov khoom siv niaj hnub no. Nws cov khoom muaj kev nyab xeeb thiab tsis muaj tshuaj lom ua rau nws siv dav hauv ntau yam kev tsim kho, raws li cov kev xav tau siab tam sim no rau kev tiv thaiv ib puag ncig thiab kev nyab xeeb hauv kev tsim kho kev lag luam.
Lub luag hauj lwm ntawm hydroxypropyl starch ether nyob rau hauv mortar tsis tsuas yog txhim kho cov dej tuav, kev tsim kho thiab kev sib txuas lub zog ntawm lub mortar, tab sis kuj txhim kho lub khov-thaw tsis kam ntawm mortar, muab kev tsim kho zoo, thiab ua raws li kev tiv thaiv ib puag ncig thiab kev nyab xeeb cov qauv. . Cov yam ntxwv no ua rau HPS yog qhov tseem ceeb thiab tseem ceeb ntxiv hauv cov khoom siv hauv tsev niaj hnub, muab kev txhawb zog rau kev txhim kho lub tsev thiab cov khoom zoo.
Post lub sij hawm: Jul-03-2024