Polyurethane binder yog kev ua tau zoo cov khoom nplaum cov khoom siv nrog polyurethane raws li lub ntsiab tivthaiv. Nrog nws cov qauv tshuaj tshwj xeeb cov qauv thiab cov khoom siv lub cev, nws tau pom dav dav tus nqi hauv kev tsim khoom thiab lub neej txhua hnub. Cov hauv qab no yog txoj kev tsom xam cov txheej txheem ntawm nws cov chaw thov tseem ceeb:
1. Cov tsheb tsim khoom lag luam
Polyurethane binder ua si ib cov qauv tseem ceeb ua haujlwm hauv kev lag luam automotive. Nws lub siab tev zog (mus txog {20-50}}}}} cov khoom siv kub thiab nws tuaj yeem tiv thaiv kom tau qhov kub thiab txias mus rau 90 degree. Nyob rau hauv txoj kev ua rau lub teeb yuag, PU Adhesive yog siv rau cov txheej txheem siv roj teeb sib xyaw, ua tiav 30% txo qis thaum tswj lub zog. Hauv kev sib dhos ntawm sab hauv seem, nws cov roj tsis kam ua zoo thiab nkag mus (nkag mus<0.5%/1000h) ensure that components such as dashboards and ceilings do not fall off under long-term vibration.
2. Kev tsim kho thiab tsim txua
In building curtain wall projects, single-component moisture-curing PU sealants form elastomers (elongation>4 {0 0%) Tom qab kho tau, uas tuaj yeem them nyiaj rau ± 25% sib koom tes rau kev tshem tawm ± 25% sib koom tes. Polyurethane-based thermal rwb thaiv tsev cov khoom nplaum ntxiv ntawm EPS / XPS ua haujlwm ntau dua lossis sib npaug. 153}}. 035 W / (ME. Hloov kho cov ntaub ntawv PU hauv av hauv av, thiab tus nqi nthuav dav thaum raug dej tuaj yeem mus txog {%, muaj zog thaiv 0.1mm tawg.
3. Cov ntaub ntawv sib xyaw Textile
Hauv kev ua cov ntaub ntawv ua haujlwm ntawm cov khoom siv ua haujlwm, cov roj ua kom cov neeg ua kom muaj ntau qib kom tau txais ntau qib, thiab kev tso qoob loo noo noo Lub automotive airbag lub pks pasets Pu bonding technology, nrog tawg lub zog ntawm {} kpa thiab 15% txo qis hauv qhov hnyav. High-sative fiber ntau cov ntaub ntawv nyob rau hauv tub rog teb siv cov tshuab kub siab ntau dua los yog sib npaug rau ib puag ncig ntawm {}} degree rau 150 degree.
IV. Kev ntim khoom ntim tshuab hluav taws xob
The transparent PU glue for LED packaging has a refractive index of 1.50-1.53, a transmittance of >90%, thiab kev tawm tsam daj ua hauj lwm ΔYI<3 (1000h aging). Low modulus (0.5-1MPa) PU materials are used for bonding flexible circuit boards, and the resistance change rate is <5% after 100,000 bending tests. In the assembly of power battery modules, the flame-retardant PU structural adhesive has passed UL94 V-0 certification and the thermal conductivity is 1.2W/(m·K).
V. Ib puag ncig tus phooj ywg thev naus laus zis thev naus laus zis
Kev hloov kho cov kev lag luam tam sim no txhawb kev txhim kho PU PU cov nplaum rau cov dej-raws li cov dej (VOC<50g/L) and solvent-free. Bio-based PU uses more than 35% renewable raw materials and reduces carbon emissions by 40%. The UV curing system achieves complete curing within 5 seconds, and the energy consumption is 70% lower than that of thermal curing. These innovations have enabled the peel strength retention rate to remain above 85% after five cycles of use.
Nrog kev nce qib ntawm cov ntaub ntawv txuj ci, polyurethans nplaum tau tawg los ntawm cov khoom siv ntawm cov khoom siv hluav taws xob ib txwm muaj, thiab kev txhim kho kev tsim kho tshiab thiab txhim kho cov cuab yeej tsim kev lag luam. Qhov tseeb txuam ntawm nws cov kev ua tsis tau zoo nrog kev tsim kho engineering ua rau nws tsis muaj kev xav "molecular suture" hauv kev lag luam molecular "hauv kev lag luam me me.