1. Cellulose ethers (MC, HPMC, HEC)
MC, HPMC, thiab HEC feem ntau yog siv rau hauv kev tsim kho putty, xim, mortar thiab lwm yam khoom, feem ntau yog rau dej tuav thiab lubrication. nws yog qhov zoo.
Kev tshuaj xyuas thiab kev txheeb xyuas:
Qhov hnyav 3 grams MC los yog HPMC los yog HEC, muab tso rau hauv 300 ml ntawm dej thiab do kom txog thaum nws yog tag nrho yaj mus rau hauv ib tug tov, muab nws aqueous tov nyob rau hauv ib tug huv si, pob tshab, npliag ntxhia dej lub raj mis, npog thiab nruj lub hau, thiab muab tso rau hauv Saib xyuas cov kev hloov ntawm cov kua nplaum nyob rau hauv ib puag ncig ntawm -38 ° C. Yog tias cov tshuaj aqueous yog ntshiab thiab pob tshab, nrog cov viscosity siab thiab fluidity zoo, nws txhais tau tias cov khoom muaj qhov kev xav zoo. Txuas ntxiv soj ntsuam rau ntau tshaj 12 lub hlis, thiab nws tseem tsis tau hloov pauv, qhia tias cov khoom muaj kev ruaj ntseg zoo thiab tuaj yeem siv nrog kev ntseeg siab; Yog tias cov tshuaj aqueous pom tias maj mam hloov xim, ua thinner, ua turbid, muaj ntxhiab tsw ntxhiab, muaj sediment, nthuav lub raj mis, thiab ntsws lub raj mis deformation qhia tau hais tias cov khoom zoo tsis zoo. Yog tias nws siv rau hauv kev tsim cov khoom, nws yuav ua rau cov khoom tsis ruaj khov.
2. TSI, CMCS
Lub viscosity ntawm CMCI thiab CMCS yog nyob nruab nrab ntawm 4 thiab 8000, thiab lawv tsuas yog siv nyob rau hauv phab ntsa leveling thiab plastering cov ntaub ntawv xws li zoo tib yam sab hauv phab ntsa putty thiab plaster plaster rau dej tuav thiab lubrication.
Kev tshuaj xyuas thiab kev txheeb xyuas:
Qhov hnyav 3 grams ntawm CMCI los yog CMCS, muab tso rau hauv 300 ml ntawm dej thiab do kom txog thaum nws yog tag nrho yaj mus rau hauv ib tug tov, muab nws aqueous tov nyob rau hauv ib tug huv si, pob tshab, npliag ntxhia dej lub raj mis, npog thiab nruj lub hau, thiab muab tso rau hauv Saib qhov kev hloov ntawm nws aqueous tov nyob rau hauv ib puag ncig ntawm ℃, yog hais tias lub aqueous tov yog fluids, pob tshab, yog hais tias nws pib cov khoom, tuab thiab zoo. aqueous tov yog turbid thiab muaj sediment, nws txhais tau hais tias cov khoom muaj ore hmoov, thiab cov khoom yog adhered. . Txuas ntxiv soj ntsuam rau ntau tshaj 6 lub hlis, thiab nws tseem tuaj yeem nyob tsis hloov pauv, qhia tias cov khoom muaj kev ruaj ntseg zoo thiab tuaj yeem siv nrog kev ntseeg siab; Yog tias nws tsis tuaj yeem khaws cia, nws pom tias cov xim yuav maj mam hloov, cov tshuaj yuav thinner, ua pos huab, yuav muaj sediment, rancid tsw, thiab lub raj mis yuav o, qhia tias cov khoom tsis ruaj khov, yog tias siv rau hauv cov khoom, nws yuav ua rau cov khoom tsis zoo.
Post lub sij hawm: Feb-07-2023