Aguade Ho Nkyerɛkyerɛmu
FRP frigye dan panel no gye "sandwich" afrafra nhyehyɛe, a ɛyɛ akyi gel coat ahobammɔ layer (0.5-0.8mm), mfinimfini glass fiber reinforcement layer (2-3mm) ne polyurethane foam core layer (50-100mm). Saa nhyehyeɛ yi nam nneɛma a ɛma ɛyɛ adwuma bom no so nya ɔhyew a ɛbɔ ho ban pii: gel coat layer no yɛ adwuma sɛ akwansideɛ a ɛyɛ den a nsuo a ɛtwetwe no nnu 0.3%, a ɛbɛtumi asiw nsuo a ɛyɛ hyew a ɛkɔ mu no kwan 98% na asiw nsuo a ɛbɛtumi akɔ foam layer no mu na ama thermal conductivity no akɔ soro glass fiber layer no yɛ ɔhyew a ɛkɔ maze kwan a ɛnam fiber bundles a ɛnyɛ nhyehyɛe so, na ɛtew radial heat conduction efficiency so 40%; polyurethane core layer no wɔ closed-cell rate a ɛboro 95%, density a ɛyɛ 40-60kg/m3, na ne mu ɛwo nhyehyɛe no di mframa convection ɔhyew a ɛyera so ma ennu 5%. Nsɔhwɛ mu nsɛm kyerɛ sɛ ɔhyew a ɛko tia nhyehyɛe a wɔabom ayɛ no du 3.2-4.5 (m2·K)/W, a ɛyɛ aluminium a wɔde afrafra a ɛwɔ ɔfa biako no mmɔho 80.
Mfaso titiriw biako a ɛwɔ FRP PU sandwich board so ne ne su a ɛkyɛn so a ɛma ɔhyew no. PU foam core boa ma wɔhwɛ dan mu hyew so na ɛtew ahoɔden a wɔde di dwuma so. Ɛfata nso ma mmeae a ɛho hia sɛ wɔkora ɔhyew so bere nyinaa te sɛ lɔre ahorow a wɔde nneɛma a ɛyɛ nwini gu mu.
FRP PU sandwich panels yɛ nea wotumi sesa no kɛse, na ɛma wotumi yɛ nhyehyɛe ne adansi a ɛyɛ mmerɛw. Ɛnyɛ den sɛ wobetumi atwitwa na wɔayɛ no sɛnea ɛfata ahwehwɛde pɔtee bi. Sɛ́ ebia wɔde di dwuma ma abɔnten afasu, ɔdan atifi, fam anaa mpaapaemu no, FRP PU sandwich panels ma wotumi yɛ nneɛma pii na ɛyɛ adwuma.
Ɛnam nneɛma foforo ne nhyehyɛe a wɔyɛ no yiye so no, FRP PU composite panels aboro atetesɛm dade nneɛma so wɔ insulation, ahoɔden, ɛka ne nsusuwii afoforo mu, na abɛyɛ ano aduru a wɔpɛ ma high-end refrigerated trucks. Bere a awɔw mu nkɔnsɔnkɔnsɔn ho nhyehyɛe renya nkɔso akɔ ahotew ne nyansa mu no, saa ade yi a ɛkɔ mu wɔ nnuruyɛ, aduan a ɛyɛ foforo, awɔw nkɔnsɔnkɔnsɔn a ɛtwam-ahye so, ne nea ɛkeka ho mu no bɛkɔ so akɔ soro, na wɔhwɛ kwan sɛ gua so kyɛfa bɛboro 45% wɔ afe 2025 mu.
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