Polyurethane, feem ntau yog pu, yog chav kawm ntawm polymers uas muaj ntau tus neeg rov ua dua ({{}-) hauv lawv cov kab ke molecular. Polyurethane elastomers sawv cev rau ib qeb tshwj xeeb ntawm elastomers. Los ntawm cov qauv molecular pom, polyurethane elastomers yog thaiv cov neeg copolymers tau ua los ntawm cov saw mos me me) thiab cov ntu ntev tsim los ntawm Diisocyanates thiab saw txuas ntxiv. Lub zog thiab cov nqaij mos mos thiab cov qauv rov ua dua cov txheej txheem. Ntxiv rau qhov muaj cov pawg neeg uretane, polyurethane molecules tuaj yeem tsim cov khoom siv hydrogen ob qho tib si nyob rau hauv thiab cov ntu thiab nyuaj ua kom tiav kev sib cais microphease. Cov Qauv Txheej Txheem Tshiab Pib Polyurethane elastomers nrog kev coj hnav tsis kam zoo thiab tawv, tau txais lub koob npe nrov ntawm kev ua "}} tiv taus roj hmab."
Dab tsi yog qhov zoo ntawm polyurethane elastomers?
Polyurethane elastomers muaj kev nkag siab zoo heev, nrog cov modulus uas nyob ntawm qhov ntawd ntawm kev rub tawm dav dav thiab cov yas. Lawv muaj cov yam ntxwv hauv qab no:
1. Muaj zog thiab elasticity, tswj siab elasticity tshaj ntau yam ntawm hardness (los ntawm tsawg li ntug dej A10 kom siab li Shore D90);
2. Ntau dua load - bearing muaj peev xwm tshaj li lwm lub elastomers nyob rau theem nyuaj;
3. Koj cov kev coj ua tsis kam, nrog kev hnav tsis kam uas yog 2 txog 10 zaug uas muaj roj hmab ntuj;
4. Kev tiv taus cov roj thiab tshuaj lom neeg;
5. Cov UV zoo dua, oxidation, ozone, hluav taws xob, thiab huab cua tsis kam;
6. Zoo nkees nkees tsis kam thiab kev co damping cov khoom, haum rau high- zaus siv daim ntawv thov;
7. Kev cuam tshuam siab tseem ceeb; zoo qes - kub hloov; Tsis xav tau cov yas ua kom tiav qhov xav tau qhov xav tau, yog li zam cov teeb meem ntsig txog kev yas ua kom tawg;
8. Cov qauv tsim tshwj xeeb ntawm polyurethane tuaj yeem tiv taus ntau qhov kub thiab txias txog 150;
9. Muaj kev sib txawv thiab yooj yim molding cov txheej txheem, nrog cov nqi qis thiab cov nqi pwm.
Piv rau cov ntaub ntawv hlau, nws cov yam ntxwv yog:
1. Lub teeb yuag
2. Tsawg lub suab nrov
3. Hnav - awrant
4. Cov nqi qis dua
5. Muaj zog corrosion tsis kam
Piv rau cov plastics, nws cov yam ntxwv yog:
1. Tsis yog ua brittle
2. Zoo elastic nco
3. Cov hnav tsis zoo
Piv rau roj hmab, nws cov yam ntxwv yog:
1. Cov kev coj zoo dua
2. Ntau tiv taus txiav thiab ntuag
3. Ntau dua load - cov kabmob muaj peev xwm
4. Yuav tuaj yeem pob tshab los yog semi {1} backparent
5. Zoo zuj zus tshuaj thiab huab cua tsis kam
6. Cov lus dav dav ntawm Hardness
7. Kev ua haujlwm ntau yam, txo cov nqi thiab ua tus nqi
Ntau ib puag ncig ua phooj ywg, kev noj qab haus huv, thiab lub zog -} ua tau zoo