Lub tshuab txau yog qhov khoom siv tshwj xeeb rau kev txhaj tshuaj txau ntawm polyurethane ua npuas dej. Ntev npaum li qhov ntsuas kev ua tau zoo ntawm polyurethane tivthaiv cov khoom siv raw (isocyanate tivthaiv thiab polyether polyol tivthaiv) ua tau raws li cov kev xav ntawm cov qauv. Cov cuab yeej siv no tso cai rau koj los ua cov khoom ua npuas dej tsis xws luag thiab zoo. Nws muaj cov kab mob polyether thiab polyisocyanates nyob rau hauv muaj cov tshuab pa, catalysts, emulsifiers thiab lwm yam tshuaj ntxiv rau, uas cov tshuaj ua npuas dej los ua npuas dej.
1. Yog tias lub tshuab ua polyurethane foaming tshuab ua npuas nplaim retardant yuav tsum, lub tshuab polyurethane foaming tshuab tuaj yeem siv lwm cov nplaim hluav taws. Cov nplaim hluav taws ntau npaum li cas tsuas yog 15-20% ntawm qhov nyhav ntawm cov khoom dawb. Ntxiv nplaim nplaim rau polyurethane. Cov ntaub ntawv A yuav tsum tau muab txhib kom zoo sib xws ua ntej ua npuas.
2. Lub tshuab ua polyurethane foaming tau hnyav khoom polyurethane A thiab B sib xyaw ua ke tib lub sijhawm thaum phau ntawv ua haujlwm foaming. Ncuav rau hauv ib lub taub ntim tib lub sijhawm. Siv cov khoom zom ua kom nplawm ntawm 2000 teev rau 8-10 feeb, thiab tom qab ntawd muab nchuav rau hauv cov pwm. Lub sij hawm ua npuas ncauj tso tawm yog nyob ntawm cov khoom xav tau, ua npuas dej tuab thiab lwm yam.