Nyob rau hauv thaj chaw loj ntawm kev lag luam niaj hnub thiab kev siv tshuab textile, Kub Melt Yarn plays lub luag haujlwm tseem ceeb nrog nws qhov tshwj xeeb kub-melt bonding yam ntxwv. Los ntawm seamless bonding nyob rau hauv cov khaub ncaws mus rau kev npaj ntawm ntau yam ntaub ntawv sib xyaw, Kub Melt Yarn tau qhia txawv tshaj plaw daim ntawv thov nqi. Txawm li cas los xij, nrog rau kev sib txawv ntawm daim ntawv thov ntau ntxiv thiab kev txhim kho txuas ntxiv ntawm cov kev xav tau zoo, kev ua haujlwm kub-resistant ntawm Kub Melt Yarn tau dhau los ua qhov teeb meem tseem ceeb uas yuav tsum tau kho kom zoo thiab tawg los ntawm kev ceev. Kev txhim kho cov cua sov-resistant kev ua tau zoo ntawm Kub Melt Yarn tuaj yeem tsis tsuas yog nthuav dav nws daim ntawv thov ntau yam, ua rau nws tseem ruaj khov thiab txhim khu kev qha nyob rau hauv qhov kub thiab txias ib puag ncig tab sis kuj txhim kho qhov zoo thiab kev pab lub neej ntawm cov khoom muaj feem xyuam, ua tau raws li qhov yuav tsum tau muaj kev kub siab heev- kev tiv thaiv teb xws li automotive interiors thiab aerospace. Tawm tsam keeb kwm yav dhau los no, kev sib tham tob txog yuav ua li cas txhawm rau txhim kho kev ua haujlwm kub-resistant ntawm Kub Melt Yarn muaj qhov tseem ceeb theoretical thiab cov tswv yim tseem ceeb.
1. Kev xaiv raw khoom
1.1 Hom Polymer
Xaiv cov polymers nrog cov ntsiab lus melting ntau dua thiab thermal stability raws li cov ntaub ntawv yooj yim rau Kub Melt Yarn. Piv txwv li, polyamide (PA) Kub Melt Yarn feem ntau muaj cua sov ua haujlwm zoo dua li polyethylene (PE) Kub Melt Yarn. Lub melting point ntawm PA tuaj yeem siab tshaj 200 degree, thaum lub melting point ntawm PE kuj tsawg, nyob ib ncig ntawm 130 degree. Qhov no yog vim hais tias muaj zog hydrogen bonds nyob rau hauv PA molecular saw, ua kom nws tswj kom zoo dua molecular qauv stability ntawm qhov kub thiab txias.
1.2 Cov Khoom Siv Ntxiv
Ntxiv cov cua sov stabilizers tuaj yeem txhim kho qhov ua haujlwm kub-resistant ntawm Kub Melt Yarn. Piv txwv li, qee cov hlau xab npum-hom kub stabilizers (xws li calcium stearate, zinc stearate) tuaj yeem ntes cov dawb radicals tsim los ntawm polymer decomposition ntawm qhov kub thiab txias, tiv thaiv kev txhim kho ntxiv ntawm cov tshuaj tiv thaiv kab mob, yog li ncua cov txheej txheem thermal degradation ntawm cov khoom. . Hauv kev siv tswv yim, cov cua sov stabilizers feem ntau yog tov nrog cov polymer hauv ib qho kev faib ua feem (xws li 0.5-2%).
2. Kev ua kom zoo ntawm cov txheej txheem tsim khoom
2.1 Cov txheej txheem spinning
Thaum lub sij hawm spinning txheej txheem, tswj tsis xws li spinning kub thiab kos piv. Qhov kub siab dua tuaj yeem ua rau cov saw hlau polymer molecular npaj ntau dua, yog li ua kom cov crystallinity ntawm fiber ntau thiab txhim kho nws cov cua sov. Txawm li cas los xij, qhov kub siab dhau heev yuav ua rau muaj kev puas tsuaj ntawm polymer, yog li yuav tsum muaj kev tswj xyuas meej. Piv txwv li, rau polyester Kub Melt Yarn, qhov kub ntawm qhov spinning feem ntau tswj ntawm 280-300 degree . Nyob rau tib lub sijhawm, qhov sib piv tsim nyog (xws li 3-5 lub sijhawm) pab cov saw hlau molecular taw qhia raws cov axis fiber ntau, ua rau cov qauv fiber ntau compact thiab txhim kho qhov kub-tiv taus.
2.2 Cov txheej txheem tom qab kho
Kev kho cua sov ntawm Kub Melt Yarn yog ib kauj ruam tseem ceeb hauv kev txhim kho cov cua sov. Kev teeb tsa cua sov tuaj yeem tshem tawm cov kev ntxhov siab sab hauv tsim thaum lub sij hawm tig thiab kos duab ntawm fiber ntau, ua rau cov qauv crystalline ntawm fiber ntau zoo meej. Qhov ntsuas kub ntawm qhov ntsuas kub feem ntau yog me ntsis siab dua qhov kev pabcuam kub ntawm cov fiber ntau, thiab lub sijhawm nyob ntawm qhov tuab thiab hom fiber ntau. Piv txwv li, rau finer Kub Melt Yarn, lub tshav kub-teev kub yuav teem tau 20-30 degree qis dua nws melting point, thiab lub sij hawm yog tswj ntawm li ntawm 10-30 vib nas this.
3. Fiber Structure Design
3.1 Txhim kho Crystallinity ntawm Fiber
Txhim kho crystallinity ntawm Kub Melt Yarn los ntawm cov txheej txheem tsim nyog (xws li kev ua kom zoo dua qub thiab cov txheej txheem tom qab kho tau hais los saum no). Cov saw hlau molecular nyob rau hauv cheeb tsam crystalline yog nyob ze, thiab cov intermolecular rog muaj zog, uas tuaj yeem tiv thaiv cov saw hlau molecular ntawm qhov kub thiab txias, yog li txhim kho cov cua sov. Piv txwv li, nyob rau hauv zus tau tej cov polypropylene (PP) Kub Melt Yarn, crystallinity tuaj yeem nce los ntawm li 50% mus rau ntau tshaj 70% los ntawm kev tswj cov cua txias, ua kom nws cov cua sov ua haujlwm zoo.
3.2 Multilayer Composite Structure
Txais cov txheej txheem sib xyaw fiber ntau, nrog cov ntaub ntawv zoo thaum tshav kub kub-tiv taus raws li txheej txheej txheej los tiv thaiv cov txheej txheem sab hauv. Piv txwv li, txheej txheej sab nrauv tuaj yeem siv cov ntaub ntawv kub-resistant polyimide (PI), thiab cov txheej sab hauv yog cov khoom siv nrog kub-kua nplaum ua haujlwm zoo. Nyob rau hauv txoj kev no, thaum rhuab, txheej txheej tuaj yeem tiv taus qhov kub thiab txias, ncua kev hloov mus rau hauv txheej txheej, yog li txhim kho cov cua sov-resistant kev ua tau zoo ntawm tag nrho Cov Kub Melt Xov Paj.
