Dab tsi yog Kevlar ntaub

Kevlar npuag yog dab tsi?

Aramid yog cov ntaub ntawv organic uas belongs rau tsev neeg muaj ntxhiab polyamide ntawm cov ntaub ntawv. Aramid fabrics muaj ntau yam sib txawv uas txawv ntawm lwm hom ntaub.

Cov ntaub no muaj ntau yam haujlwm tshwj xeeb. Ntawm no hauv tsab xov xwm no, peb yuav tham txog txhua yam Kevlar fabrics. Peb kuj tseem yuav hais txog cov txheej txheem ib ntus ntawm kev tsim cov ntaub Kevlar. Yog li nyeem tsab xov xwm no kom paub ntau ntxiv txog Kevlar ntaub.

Kevlar yog cov khoom siv nrog lub zog tshwj xeeb thiab lub zog tensile. Ua tsaug rau txoj kev no, fibers yog tsim uas muaj xws li kev siv cov interchain bonds ntxiv rau cov cross-linking chemical bonds uas lo rau chains, thiab cov fibers muaj zog. Hewlett-Packard (HP) tsim nws rau kev ua haujlwm siab thiab kev siv siab heev. Kevlar muaj zog tensile siab heev.

Nws muaj qhov sib xyaw ua ke ntawm lub zog, siab tawv, toughness, thiab thermal stability. Nyob rau hauv cov nqe lus ntawm tensile lub zog, Kevlar yog ntau tshaj 10 npaug zog dua hlau. Ntxiv nrog rau nws cov cua sov ua haujlwm zoo thiab hloov tau yooj yim, Kevlar kuj tseem muaj qhov zoo tshaj plaws ballistic thiab txiav / puncture tsis kam. Tam sim no, ntau qhov sib txawv Kevlar fibers tau tsim los ua kom tau raws li qhov xav tau ntawm ntau tus neeg siv kawg.

Hom Kevlar

Kevlar - Tire cord

Kevlar 29 – Multipurpose Yarn

Kevlar 49 - high modulus yarn

Kevlar 68 - nruab nrab modulus xov paj

Kevlar 100 - dyed yarn

Kevlar 119 - high elongation yarn

Kevlar 129 - siab tenacity yarn

Kevlar 149 - Ultra High Modulus Xov Paj

Kevlar yog dab tsi?

Kevlar yog cov khoom siv hluavtaws ua los ntawm cov khoom siv poly-p-phenylene terephthalamide. Ua kom muaj cua sov qis hauv polycondensation hauv alkyl amino cov kuab tshuaj xws li dimethylacetamide, thiab tom qab ntawd ua cov tshuaj tiv thaiv condensation. Lub polymer uas tshwm sim los ntawm cov tshuaj tiv thaiv kab mob no yuav tsum tau muab cais tawm ntawm qhov seem ntawm qhov system los ntawm nag lossis daus nrog dej, nruab nrab, tom qab ntxuav thiab ziab.

Txhawm rau tsim Kevlar fibers lossis yarns, polymer thiab sulfuric acid daws tau raug rau lub dav hlau ntub dej qhuav. Melt spinning tsis siv vim Kevlar polymer yaj ua ntej ncav cuag cov kua kub.