2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Polyester yog cov tswv cuab ntawm cov chav kawm polyester. Qhov no yog cov khoom siv hluavtaws ua los ntawm polyethylene terephthalate yaj.
Dab tsi yog polyester
Kev tshawb fawb txog nws tau pib xyoo 1935 hauv tebchaws Askiv, nws tau sau npe rau xyoo 1945. Nyob rau hauv lub qub USSR, nws tau hu ua lavsan (raws li qhov chaw ntawm kev tshawb fawb nyob rau hauv lub Laboratory ntawm lub Academy ntawm Sciences). Polyester yog dab tsi? Cov ntaub ntawv ntawm pab pawg no yog siv los tsim cov khoom noj khoom haus films thiab plastics. Qhov no yog ib qho kev taw qhia hauv kev lag luam polymer. Nyob rau hauv Russia, lawv tsuas yog siv los ua qhov khoob ntawm ntau hom, los ntawm txhua yam ntawm cov thawv yas thiab cov thawv ntim khoom. Rau qhov tsawg dua, nws yog siv rau kev tsim cov ntaub, zaj duab xis thiab casting ntawm ntau yam khoom. Hauv lwm lub tebchaws, qhov xwm txheej yog qhov txawv: feem ntau ntawm cov polyethylene terephthalates yog siv los tsim cov xov thiab fibers.
Composition
polyester yog dab tsi? Koj puas paub tias nws muaj pes tsawg leeg? Polyester muaj cov yam ntxwv tshwj xeeb. Yog vim li ntawd nws thiaj txaus siab heev. 100 polyester khaws cov cua sov muaj zog heev. Nws muaj siab elasticity thiab qis hygroscopicity. Cov cuab yeej no yog qhov zoo rau kev siv hauv kev lag luam teeb pom kev zoo, vim tias cov khoom zoo li no khaws lawv cov tsos thiab tsis hloov cov duab. Ntawmsiv nws yog sau tseg tias polyester yog resistant rau fading, pwm, nws tsis txawm ntshai npauj. Tsis pub tshuaj bleaching.
Sib xyaw nrog lwm cov fibers
txhawm rau ua kom lub zog ntawm cov khoom tiav, muab cov khoom tiv thaiv zoo li qub, polyester yog siv nrog lwm cov fibers ntuj. Qhov kev sib xyaw ua ke no ua rau muaj txiaj ntsig zoo thiab cov neeg siv khoom xav tau ntawm cov ntaub rau txhua hom khaub ncaws (los ntawm cov tsho loj, tsho, suits rau ris tsho hauv qab). Muab hais tias polyester yog mos thiab dries sai, nws feem ntau ua ke nrog viscose thiab paj rwb. Polyester fibers zoo ib yam li cov ntaub plaub, zoo kawg nkaus ua raws li kev ntxhib los mos ntawm ntuj fibers. Qee zaum, kev sib xyaw nrog polyamide yog siv. Los ntawm ntau yam additives, weaving qauv, qhov loj ntawm cov fibers siv, polyester tuaj yeem hloov nws qhov kev ntxhib los mos, zoo li, yuav matte lossis ci iab.
Scope of application
polyester yog dab tsi? Nws qhib ib pawg ntawm cov khoom siv hluavtaws. Nrov heev thiab feem ntau siv los ntawm cov neeg tsim qauv. Nws tsis kam mus rau lub teeb, lub zog siab thiab kev tuav ntev ntev yuav ib txwm muaj nuj nqis los ntawm cov khoom lag luam zam. Cov yam ntxwv zoo muaj xws li:
- Cov ntaub nyias nyias thiab qhuav sai heev.
- Zoo khaws thiab haum ib daim ntawv, tsis rumpled. Thov nco ntsoov tias thaum overheated, wrinkles yuav tshwm sim ntawm cov ntaub, uas tsis yooj yim rau straighten.
- Tsis ntshai tshav ntuj, tsis ploj, haum rau xaws cov khoom siv textile. Cov khoom zoo li no, tom qab siv ntau xyoo, khaws cov thawj ci ci ntawm cov xim.
- Kev tu yooj yim, stain resistant, yooj yim los ntxuav.
- Polyester fabrics yog huab cua resistant, zoo meej rau sportswear, tsho loj, tsho.
- Pleated thiab corrugated folds yog khaws cia zoo kawg nkaus thaum xaws hauv cov khoom.
- Fabrics tsis stretch lossis shrink, tiv taus abrasion.
Cov khoom tsis zoo ntawm polyester yog raws li hauv qab no:
- Tsawg hygroscopicity.
- Yooj yim zas.
- nruj, hluav taws xob.
Pom zoo:
Dab tsi yog briquette, nws yog dab tsi, qhov zoo thiab qhov tsis zoo ntawm roj
Nws nyuaj rau nrhiav lwm txoj hauv kev yooj yim rau cov pa roj uas yog qhov cua sov hauv tsev. Tab sis nws tsis yog ib txwm ua tau los ua cov txheej txheem tsim nyog, yuav cov roj boiler thiab lwm yam khoom siv. Ntau tus xav paub txog dab tsi tuaj yeem siv los ua kom sov ib lub tsev ntiag tug, tshwj tsis yog cov taws tswm ciab, dab tsi tuaj yeem siv tau, ntxiv rau cov tsoos roj. Yav dhau los, ntau cov pov tseg tau muab pov tseg thiab pov tseg. Niaj hnub no, ntawm ntau nag hmo cov neeg ua lag luam "cov khib nyiab" "ua tau nyiaj", tau txais txiaj ntsig zoo rau ib puag ncig thiab cov pej xeem
ID Debt yog dab tsi? Hnub kawg rau them nuj nqis ntawm ID yog dab tsi? cov ntaub ntawv dav dav
Nws feem ntau tshwm sim uas tib neeg tsis maj nrawm them cov nyiaj qiv, them nyiaj, nuj nqis ntawm daim ntawv txais lossis them rau cov khoom thiab cov kev pabcuam uas lawv tau yuav ua ntej. Qee zaum qhov teeb meem no tuaj yeem daws tau yooj yim thiab yooj yim, tab sis nws tshwm sim tias koj yuav tsum nrhiav kev ncaj ncees hauv tsev hais plaub. Thiab nws yog nyob rau hauv cov ntaub ntawv no nws yuav ua tau mus sau lub thiaj li hu ua ID nuj nqis
004 kev pabcuam yog dab tsi thiab qhov teeb meem hauv nroog yog dab tsi?
Puas txhua tus neeg nyob hauv St. Petersburg puas paub tig qhov twg tom qab pom lub rooj zaum tawg lossis lub roob khib nyiab ntawm cov nyom? Nws tuaj yeem nyuaj rau kev txiav txim siab tias leej twg yog tus saib xyuas txhua cheeb tsam hauv ib lub nroog, tab sis taw qhia qhov teeb meem yog qhov tsim nyog los ua kom lub nroog zoo dua. Thiab rau cov hom phiaj no, cov kev pabcuam tshwj xeeb tau tsim
Cov khaub ncaws me me franchise: nws yog dab tsi, nws yog dab tsi, ntau yam
Tsis yog txhua tus tuaj yeem qhib lawv lub lag luam. Muaj ntau yam teeb meem uas yuav tshwm sim ntawm txoj kev
OSAGO yog dab tsi: yuav ua li cas lub kaw lus ua haujlwm thiab qhov nws pov hwm tiv thaiv, dab tsi suav nrog, dab tsi xav tau rau
OSAGO ua haujlwm li cas thiab txhais li cas los ntawm cov ntawv luv? OSAGO yog ib qho kev tuav pov hwm lub cev muaj zog thib peb ntawm tus neeg tuav pov hwm. Los ntawm kev yuav ib qho OSAGO txoj cai, ib tus pej xeem dhau los ua tus neeg siv khoom ntawm lub tuam txhab pov hwm nws tau thov rau
