Polyester. Yuav ua li cas yog khoom no, thiab dab tsi yog nws siv

Nyob rau hauv cov hnub, thaum ntau yam polymers thiab yas tau tau nquag siv nyob rau hauv lub neej txhua hnub, cov neeg xav hais tias nrog lawv pab yuav kom daws tau yuav luag tag nrho cov teeb meem, ntau dhau rau tej yam ntuj tso cov ntaub ntawv. Qhov no scientific-kev thiab tshuaj zoo siab ntawd kub ntev li ntawm lub caij forties ntawm lub seventies, kom txog thaum noob neej kom paub tseeb tias lub paj rwb, linen los yog ntaub plaub rau cov khaub ncaws yog tseem nyob rau hauv feem ntau tus neeg mob zoo tshaj tej hluavtaws. Txawm li cas los, cov neeg xyoo lawm twb tsis nyob rau hauv vain, ntau ntau yam heev cov tseem ceeb thiab pab tau zoo ntawm polymers tsim lub tej yam kev mob rau lawv cov dav daim ntawv thov nyob rau hauv ntau yam teb ntawm tib neeg kev ua si.

Ib qho ntawm feem ntau hluavtaws cov ntaub ntawv uas yog polyester. Yuav ua li cas yog khoom no rau zus tau tej cov ib co cov khoom nws yog siv tam sim no? Yuav kom teb tau cov lus nug no, ib tug yuav tsum xub to taub cov tshuaj thiab txhua yam khoom ntawm lub polymer.

Raws li cov ntaub ntawv uas yog ib tug polyester multimolecular polyether saw. Nyob rau hauv lub synthesis ntawm cov polymer muaj muaj zog bonds, uas ua rau nws mas muaj zog. Thaum ua ntawv thov rau cov khaub ncaws no txhais tau tias nws cov high kuj mus rhuav thiab crease. Yog zoo no? Ntawm cov hoob kawm, rau ib co ntawm cov qualities yog indispensable tso quav tso khoom, raws li zoo raws li lub peev xwm los tiv thaiv dej. Tab sis txhua yam muaj ib tug downside. Tsis tshua muaj dej haum thiab mob heev ntawm cov khoom ua nws seeb nyob rau hauv kev sib raug zoo rau tej tawv nqaij nto. Tab sis tham txog lub polyester uas yog kiag li unsuitable ntaub rau khaub ncaws, koj yuav tau tsis tsuas nws uas yog tsawg.

Txawv teb chaws muaj kev sib txawv pauv npe, uas raug muab taw los Polyester. Muaj pes tsawg leeg ntawm raw cov ntaub ntawv tej zaum yuav ua ke, piv txwv li, "65% wool, 35% polyester." Lo lus yog, thaum xub thawj siab ib muag, txawv teb chaws, nyob rau hauv qhov tseeb, yog ib tug tsiaj ntawv, uas lub Academy ntawm Sciences - Academy ntawm Sciences, thiab cov tsiaj ntawv "L", "A" thiab "B" txhais tau tias ib tug kuaj ntawm high-molecular tebchaw. Nyob rau hauv Teb Chaws Asmeskas, cov khoom no yog ua nyob rau hauv lub npe "Dacron".

Nyob rau hauv technology, qhov no polymer yog dav siv vim lub khoom tshwj xeeb. Piv txwv li, rau zus tau tej cov ntim ntaub ntawv uas yuav tsum tau siab zog, dav polyester siv. Yuav ua li cas yog cov yam ntxwv? Durability rau zawm strapping bales muaj tshuam wires compressive zog yog tsuas yog me ntsis ua tsis tau zoo kuj mus rhuav ntawm cov hlau sawb, nyob rau lub polymer yog yooj yim npaum li thiab, tseem ceeb tshaj, tsawg hlau. Zog polyester filaments ua rau lawv daim ntawv thov nyob rau hauv tus neeg mob qhov twg lub leeg yuav tsum heev txhim khu kev qha, thiab ropes, woven los ntawm lawv, tau mas enormous loads.

Nyob rau hauv lub ntiaj teb no aircraft lag luam thiab kev tsim kho cov tsheb kawg xyoo lawm kuj tau nquag expanding lub Scope ntawm daim ntawv thov ntawm puas polymeric cov ntaub ntawv. Tej yam khoom, uas yog thov es tsis txhob ntawm manufacturing dural yas, thiaj li nyhav thiab pab txoj kev xeb kuj. Tub rog aviation, qhov no polyester muaj lwm tseem ceeb vaj tse: tus neeg tshawb fawb pom los ntawm tshuaj ntsuam lub polyester, nws radioprovodyaschy khoom. Qhov no tej khoom vaj tse tso cai rau koj mus ua los ntawm nws lub radar radomes thiab aircraft silhouette yuav tsis pom mus rau tus yeeb ncuab huab cua tiv thaiv tau.