PU cov tsheb thauj khoom, lossis polyurethane hluavtaws tawv, yog tsim los ntawm peb lub hauv paus ntsiab lus: "biomimetic kev ntxhib los mos, kev ua tau zoo, thiab kev nthuav dav." Los ntawm kev sib koom ua ke ntawm cov ntaub ntawv tshawb fawb, txheej txheem engineering, thiab cov cuab yeej siv kho tshuab, lawv ua tiav kev siv tau zoo dua thiab tsim qauv thaum hloov cov tawv nqaij. Qhov tseem ceeb, lawv siv cov khoom tsim ua ntau yam - txheej txheej txheej los simulate microstructure thiab macroscopic yam ntxwv ntawm cov tawv tiag tiag, tshwj xeeb tshaj yog txhim kho qee yam khoom kom tau raws li cov kev xav tau sib txawv.
Los ntawm cov txheej txheem tsim qauv tsim qauv, PU cov tsheb thauj khoom siv peb - txheej txheej: "puag ntaub txhawb nqa-foamed cushioning-bionic nto." Lub hauv paus ntaub txheej, ua raws li lub cev pob txha, feem ntau yog ua los ntawm woven los yog knitted ntaub. Lub interweaving ntawm warp thiab weft yarns muab thawj lub zog thiab seem stability. Its density and weaving method directly affect the tensile strength and flexibility of the finished product-high-density woven fabrics are suitable for furniture or automotive interiors requiring stiffness, while knitted fabrics, due to their superior elasticity, are better suited for flexible products such as footwear and apparel. Cov txheej ua npuas ncauj yog qhov tseem ceeb rau kev ntxhib los mos thiab kev nplij siab. Ua los ntawm polyurethane resin los ntawm cov txheej txheem foaming, nws tsim ib lub micron - loj microporous qauv. Nws porosity thiab cell uniformity txiav txim siab cov khoom softness, resilience, thiab breathability. Los ntawm kev kho cov foaming tus neeg sawv cev piv thiab cov txheej txheem tsis, "fleshy xav" ntawm cov tawv tiag tiag tuaj yeem simulated, thaum zam qhov tsis sib xws ntawm cov tawv nqaij vim qhov sib txawv ntawm qhov sib txawv. Cov txheej txheej saum npoo yog qhov tseem ceeb ntawm biomimetic tsim. Siv polyurethane resin raws li cov matrix, cov xim, matting agents, thiab kev ntxhib los mos ntxiv. Los ntawm txheej txheej los yog tso tawm cov txheej txheem hloov pauv, nws tsim cov tawv nqaij-zoo li nplej, tumbled zoo nkauj, lossis tshwj xeeb zoo nkauj. Nws cov thickness thiab hardness tswj ncaj qha cuam tshuam rau kev pom qhov tseeb thiab kev puas tsuaj.
Cov khoom tsim qauv tsim ua raws li lub hauv paus ntsiab lus ntawm "kev ua tau zoo- txoj cai tswj hwm." Qhov hnyav molecular ntawm polyurethane resin thiab qhov sib piv ntawm cov mos mus rau cov ntu nyuaj txiav txim siab cov yam ntxwv ntawm cov txheej txheem: cov ntsiab lus ntawm cov mos mos siab txhim kho qhov yooj yim, haum rau cov khau sab sauv uas yuav tsum tau khoov ntau zaus; ib qho nyuaj ntu cov ntsiab lus txhim kho kev puas tsuaj, haum rau siab -frequency friction scenarios xws li hnab. Txhawm rau nthuav dav kev ua haujlwm, cov khoom siv ntxiv tuaj yeem muab tso rau hauv tus qauv tsim, xws li ntxiv nano-silica los txhim kho khawb tiv thaiv, qhia cov kab mob tua kab mob rau kev tiv thaiv kev nyiam huv, lossis hloov kho cov nplaim hluav taws kom ua tau raws li qhov yuav tsum tau muaj kev nyab xeeb hluav taws hauv tsheb thiab aerospace kev lag luam. Kev kho qhov sib txuas ntawm lub hauv paus ntaub thiab txheej kuj tseem ceeb heev. Txhim kho lub zog adhesion ntawm ob los ntawm ib tug primer tiv thaiv blistering los yog tawg los ntawm interlayer delamination; Qhov kev tsim no ncaj qha cuam tshuam rau lub sijhawm ntev ntawm cov khoom tiav.
Cov txheej txheem tsim yuav tsum ua kom muaj kev sib koom ua ke ntawm cov qauv, cov khoom siv, thiab kev ua haujlwm. Hauv txoj kev txheej txheej, qhov sib txuam ntawm cov viscosity ntawm cov resin viscosity, txheej ceev, thiab ziab kub txiav txim siab qhov sib xws thiab adhesion ntawm txheej; nyob rau hauv txoj kev lamination, lub siab sib xyaw thiab qhov kub thiab txias ntawm lub hauv paus ntaub thiab npuas txheej yuav tsum tau tswj kom tsis txhob muaj npuas los yog thickness deviations. Ncej - ua tiav (xws li embossing, matte tiav, thiab kub stamping) hloov qhov chaw los ntawm lub cev lossis tshuaj txhais tau tias txhawm rau txhim kho cov nyhuv biomimetic thiab cov khoom zoo nkauj. Cov txheej txheem parameter yuav tsum tau ua raws li cov txheej txheem txheej txheej -piv txwv li, siab- cov txheej tawv tawv yog haum rau kev nplua embossing, thaum cov txheej mos yuav tsum tau txo embossing siab los tiv thaiv kev ntxhib los mos.
Kev sib koom ua ke ntawm cov tswv yim tsim kev ruaj ntseg yog tsav cov evolution ntawm PU pickup tsheb mus rau ib puag ncig tus phooj ywg. Waterborne polyurethane resins tuaj yeem hloov cov kuab tshuaj-raws li tshuab, txo VOC emissions; daim ntawv thov ntawm bio-raws li polyols txo dependence rau roj av; thiab kev tsim cov ntaub ntawv rov qab siv dua tshiab thiab qis -zog- cov txheej txheem kev noj haus ua kom zoo dua kev siv cov peev txheej los ntawm lub neej- voj voog kev xav.
Hauv cov ntsiab lus, tus qauv tsim ntawm PU cov tsheb thauj khoom, los ntawm kev tsim kho biomimetic ntawm ntau- txheej txheej, kev tswj hwm kev ua haujlwm ntawm cov khoom tsim, thiab kev sib koom ua ke ntawm cov txheej txheem tsis zoo, ua tiav cov hom phiaj ntawm kev ua tau zoo, nthuav dav ua haujlwm, thiab ib puag ncig sustainability thaum ua raws li qhov zoo ntawm cov tawv tiag tiag. Qhov no muab ib tug scientific thiab saj zawg zog manufacturing logic rau cov hluavtaws tawv kev lag luam.
