Dab tsi yog qhov txawv ntawmkaw cell polyurethane ua npuas ncaujthiab qhib cell polyurethane ua npuas ncauj?
Ib qho ntawm cov khoom siv polyurethane ua npuas ncauj ua ke, paub raws li lub npe ntawm kev teeb tsa ua npuas ncauj, feem ntau yog siv hauv tsev neeg, nrog rau kev ua haujlwm nrog qee qhov chaw thiab ntim (sau cov kab nrib pleb, qhib me me, ua haujlwm kho, thiab lwm yam). .
Nyob rau hauv qhov tseeb, lub Cheebtsam twb premixed thiab cov muaj pes tsawg leeg yuav tsum tau rau polymerization yog nyob rau hauv ib tug pressurized tank. Tab sis rau qhov kawg tshwm sim, foaming thiab hardening, yuav tsum tau sib cuag nrog oxygen thiab dej nyob rau hauv cov huab cua (wetting lub nto thiab cov dej vapor muaj nyob rau hauv cov huab cua). Qhov tshwm sim yog cov qauv ua npuas ncauj uas nws qhov pores qhib.
|
Specification |
piv |
|
|
kaw cell polyurethane / Ob lub ntsiab lus txau ua npuas ncauj |
qhib cell polyurethane ua npuas ncauj / txau ua npuas ncauj |
|
|
Thermal conductivity, W / mx degree |
0,019 ÷ 0,035 |
0,025 ÷ 0,045 |
|
Tus naj npawb ntawm cov cell kaw |
Tshaj 90% |
Hauv qab 50% |
|
Expansion (npub nce) piv rau thawj ntim |
1:40 |
1:70 ÷ 90 |
|
Qhov ceev, kilogram / cubic meter |
20 ÷ 200 |
8 ÷ 18 |
|
vapor kis tus nqi |
0,02 ÷ 0,05 |
0,07 ÷ 0,15 |
|
Hygroscopicity |
1 ÷ 3% |
10 ÷ 60% |
|
Waterproof kev ua tau zoo |
yog |
tsis muaj |
|
Suab absorption kev ua tau zoo |
zoo |
siab |
Ob txoj kev sib txawv tuaj yeem siv los tsim cov qauv insulating los yog muab cov khoom siv insulating rau lub tsev - txau lossis txhaws cov kab noj hniav (casting).