Qhov tseeb cia txoj kev ntawm polymer polyols yuav tsum muaj kev txiav txim siab ntawm cov thawv xaiv, tswj ib puag ncig thiab tshuaj lom neeg sib xws. Cov ntsiab lus tshwj xeeb yog raws li hauv qab no:
1. Cov thawv siv thiab kev kho
Cov Khoom Siv Yuav Tsum Tau
Cov thawv ua los ntawm cov hlau, txhuas, polypanized hlau barrels lossis yas tsoo yuav tsum tau siv ua ntej kom ntseeg tau tias zoo nqus thiab oxidation.
Kev tiv thaiv roj
Nws raug nquahu kom puv nitrogen nyob rau hauv lub thawv kom cais oxygen thiab txo qhov kev pheej hmoo ntawm oxidation kev tawm tsam.
2. Kev tswj ib puag ncig ib puag ncig
Kev Tswj Kub
Qhov chaw cia kub yuav tsum tau tswj hauv qab 70 degree, thiab nws raug nquahu kom khaws cia kub {degree {{{3} {} indive crystallization.
Lub teeb - ntawv pov thawj thiab noo noo - ntawv pov thawj
Thaj chaw cia yuav tsum yog qhov chaw nkaum ncaj qha, ua kom ib puag ncig qhuav, thiab tiv thaiv kev ua kom muaj kev ua kom tsis muaj kev ua rau muaj kev ua tau zoo.
Kev Ntsuas Hluav Taws Xob
Qhov chaw cia yuav tsum nyob deb ntawm cov chaw tua hluav taws thiab siab - Cov khoom kub los txo qhov kev pheej hmoo ntawm kev sib xyaw.
3. Tshuaj tsis zoo thiab kev tiv thaiv kev nyab xeeb
Cais cov tshuaj tab
Zam kev sib cuag nrog cov tshuaj tsis sib xws xws li muaj zog acidic tshuaj thiab isocyanates los tiv thaiv kev cuam tshuam lossis paug.
Kev Tiv Thaiv Kev Ua Haujlwm Kev Ua Haujlwm
Vim yog cov amino polyether polyols, cov cuab yeej tiv thaiv xws li goosgles thiab hnab looj tes yuav tsum tau hnav thaum ua haujlwm kom tsis txhob sib chwv tawv nqaij lossis qhov muag.
4. Txee Lub Neej thiab Kev Tswj Xyuas Kev Txij Nkawm
Lub sij hawm cia
Lub txee lub neej ntawm cov khoom yog feem ntau yog 6-12 lub hlis. Tom qab tas sij hawm, kev ua tau zoo yuav tsum raug kuaj thiab tsim nyog ua ntej nws tuaj yeem siv txuas ntxiv.
Kev kuaj xyuas tsis tu ncua
Kev sib khi ntawm cov thawv ntim thiab qhov ruaj khov ntawm qhov chaw cia ib puag ncig yuav tsum tau kuaj xyuas tsis tu ncua kom ntseeg tau tias tsis muaj xau lossis muaj kuab paug.
5. Anti - Kev tiv thaiv thiab ib puag ncig ib puag ncig
Cov chaw cia yuav tsum tau nruab nrog anti {{}}}}}} paniv ib puag ncig lossis cov chaw dej saum npoo av vim nws cov txiaj ntsig tsis zoo.
Los ntawm cov saum toj no -} hais cov qauv tswj hwm, cov khoom siv lub cev muaj peev xwm tswj tau zoo thiab lawv lub neej pabcuam tuaj yeem txuas ntxiv.