Nyob rau hauv xyoo tas los no, cov khoom siv polyurethane tau dhau los ua neeg nyiam, xws li hauv txheej rwb thaiv tsev ntawm cov tub yees, txaj, thiab cov khoom siv tsheb hauv lub neej txhua hnub, thiab tau siv dav. Txawm hais tias polyurethane ib txwm tau sau npe tias yog ib puag ncig tus phooj ywg thiab rov ua dua tshiab, qhov tseeb, qhov xwm txheej rov ua dua ntawm cov ntaub ntawv polyurethane tom qab lawv tau ua rau hauv cov khoom siv davhlau ya nyob twg tsis zoo thiab tseem yog ib qho teeb meem uas cuam tshuam rau kev lag luam.
Cov chaw tsim khoom tsim cov polyurethane ua npuas ncauj tsim ntau cov khoom seem, pwm dhau thiab cov khoom pov tseg txhua xyoo, thiab tseem tsim cov khoom pov tseg ntau nyob rau hauv ntau qhov chaw hauv qab dej, xws li qub polyurethane ua npuas ncauj thiab elastomer hauv tsheb kawg, uas. yuav tsum tau siv dua.
Feem ntau, polyurethane tuaj yeem muab faib ua thermosetting thiab thermoplastic, thiab tuaj yeem ua rau hauv cov yas polyurethane (feem ntau yog npuas yas), polyurethane fibers (spandex), thiab polyurethane elastomers. Cov ntaub ntawv polyurethane feem ntau yog hu ua thermosetting, xws li mos, tawv thiab semi-rigid polyurethane ua npuas ncauj yas, thiab RIM polyurethane elastomers rau cov tshuaj tiv thaiv txhaj tshuaj molding siv nyob rau hauv kev tsim cov khoom siv tsheb. Cov khoom siv polyurethane no txawv kiag li ntawm cov khoom siv thermoplastic polyurethane, thiab nws yog ib qho nyuaj rau sib tov nrog cov ntaub ntawv tshiab los ntawm melting thiab granulation rau hauv Suav teb. Tam sim no, tom qab rov ua dua tshiab, nws feem ntau yog kho los ntawm kev incineration, landfill, thiab lwm txoj kev.
Txoj kev pov tseg yog ib txoj kev tsis muaj kev pab, uas tsis tsuas yog nyob hauv av xwb tab sis kuj siv cov nqi. Kev kub hnyiab kom rov qab tau lub zog hluav taws xob, vim tias polyurethane yog cov muaj nitrogen-muaj cov polymer, cov kab mob sib kis yuav tsum tau tswj nruj me ntsis, thiab cov cuab yeej nqus yuav tsum tau muab ntsia kom txo tau cov pa phem ntawm cov pa phem rau ib puag ncig. Nyob rau hauv xyoo tas los no, los ntawm kev tshawb nrhiav maj mam, cov txheej txheem rov ua dua ntawm polyurethane kuj tau pib ua kom muaj txiaj ntsig. Kab lus no yuav qhia txog qee txoj hauv kev siv lub cev thiab tshuaj rau kev rov ua dua cov pov tseg polyurethane, vam tias yuav muab cov kev xav dav dav rau txhua tus.
Tam sim no qhov xwm txheej ntawm polyurethane rov ua dua tshiab hauv Suav teb
1. Polyurethane ntau lawm factories tsim ib tug loj npaum li cas ntawm cov khoom seem nyob rau hauv txhua txhua xyoo, uas yog cov concentrated thiab yooj yim rau recycle. Feem ntau cov chaw tsim khoom siv lub cev thiab tshuaj siv dua tshiab los siv dua thiab rov siv cov khoom seem.
2. Cov ntaub ntawv pov tseg polyurethane siv los ntawm cov neeg siv khoom tsis tau siv dua thiab kho zoo. Muaj qee lub tuam txhab nyob hauv Suav teb uas tshwj xeeb hauv kev kho cov khib nyiab polyurethane, tab sis feem ntau ntawm lawv tsom mus rau incineration thiab lub cev rov ua dua tshiab.
3. Muaj ntau lub tsev kawm ntawv qib siab thiab cov tsev kawm tshawb fawb hauv tebchaws thiab thoob ntiaj teb tau mob siab rau kev tshawb nrhiav tshuaj lom neeg thiab tshuaj lom neeg siv thev naus laus zis rau polyurethane, thiab tau tshaj tawm qee yam kev kawm tiav. Tab sis tsawg heev tau nqis peev tiag tiag hauv cov ntawv thov loj, nrog German H&S yog ib qho ntawm lawv.
4. Kev faib tawm ntawm cov khoom pov tseg hauv Suav teb nyuam qhuav pib, thiab cov ntsiab lus ntawm cov khoom siv polyurethane hauv qhov kev faib tawm zaum kawg yog qhov tsawg. Nws yog ib qho nyuaj rau cov lag luam koom nrog kev kho mob txuas ntxiv kom tau cov khoom pov tseg polyurethane rau kev rov ua dua tshiab thiab kho dua tshiab. Cov khoom tsis ruaj khov ntawm cov khoom siv pov tseg ua rau nws nyuaj rau cov lag luam ua haujlwm.
5. Tam sim no tsis muaj tus qauv them nqi meej rau kev rov ua dua thiab kho cov khib nyiab loj. Piv txwv li, cov ntaub pua tsev ua los ntawm polyurethane, cov khaubncaws sab nraud povtseg tub yees, thiab lwm yam, nrog rau kev txhim kho cov kev cai thiab kev lag luam chains, cov lag luam uas rov ua dua tuaj yeem khwv tau nyiaj ntau heev.
6. Huntsman tau tsim ib txoj hauv kev los siv PET lub raj mis yas. Tom qab ntau cov txheej txheem nruj, lawv hnov mob nrog lwm cov ntaub ntawv raw hauv cov tshuaj tiv thaiv cov khoom siv los tsim cov khoom siv polyester polyol. Txog li 60% ntawm cov khoom muaj pes tsawg leeg los ntawm cov khoom siv PET yas fwj, thiab polyester polyol yog ib qho tseem ceeb raw khoom siv los tsim cov ntaub ntawv polyurethane. Tam sim no, Huntsman tuaj yeem rov ua dua 1 billion 500ml PET yas fwj txhua xyoo. Nyob rau hauv tsib lub xyoos dhau los, 5 billion recycled PET yas hwj tau hloov mus rau 130000 tons ntawm polyol khoom rau zus tau tej cov polyurethane rwb thaiv tsev cov ntaub ntawv.