Sandwich-ka polyurethane wuxuu qaataa xaashi bir ah oo midab leh oo tayo sare leh sida lakabka sare.Xudduntana waxay ka samaysan tahay polyurethane, kaas oo xumbo lagu daaweeyay heerkul sare, waxaana lagu sameeyay qaabayn laba-track ah oo la xakameeyey.Waxay leedahay wax qabad heer sare ah oo kuleyl ah iyo foorarsi ku habboon, dahaarka dhawaaqa iyo iska caabbinta dabka.Marka la barbardhigo muraayadaha kale, dhumuc yar ayaa loo baahan yahay haddii la rabo in la gaaro yool isku mid ah, iyo booska saafiga ah ee dhismaha waa la kordhiyaa.
Waxqabadka 1.Fireproof: Polyurethane waa walxo dab-damis ah oo darajo B2 ah oo leh index oxygen ≥28, taas oo si wax ku ool ah u yareyn karta khasaaraha dabka.
Waxqabadka 2.Insulation: Xakamaynta kulaylka ee polyurethane waa 0.019-0.023w / mk, taas oo ah qalab heer sare ah oo heer sare ah.
3.Dhawaaqa dhawaaqa wanaagsan: dhawaaqa dhawaaqa wanaagsan, si wax ku ool ah u yareeya faragelinta qaylada dibadda.
4.The hydrophobicity of polyurethane waa ≤ 0.5%, oo uu leeyahay cidhiidhi hawada wanaagsan.
Cufnaanta 5.Bulk waa qiyaastii 42kg/m³, xoog sare, xasillooni waarta.
| Magaca | Heerarka kulaylka (w/mk) | Dhumucda loo baahan yahay si loo gaaro saameyn isku mid ah |
| PU | 0.019-0.023 | 40 |
| XPS | 0.027-0.031 | 60 |
| EPS | 0.037-0.041 | 80 |
| Qaybaha polystyrene | ≤0.06 | 160 |
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