PVC pem teb, yas pem teb thiab pob zeb yas pem teb tag nrho yog tib lub ntsiab lus ntawm elastic pem teb: PVC pem teb thiab yas pem teb yog cov npe sib txawv rau tib yam khoom. Pob zeb yas pem teb belongs rau cov khoom lag luam ntawm PVC pem teb. PVC pem teb yog muab faib ua coil thiab ntawv. Pob zeb yas pem teb hais txog daim ntawv.
duab
01
PVC pem teb
Cov ntaub ntawv tseem ceeb ntawm PVC pem teb yog PVC thiab pob zeb hmoov. Qhov kev faib ua feem ntawm PVC yog ntau dua li pob zeb hmoov. PVC yog cov khoom siv PVC. PVC pem teb kuj hu ua yas pem teb. Vim muaj cov npe sib txawv tam sim no, qee cov neeg hu nws cov kua nplaum hauv pem teb, cov kua nplaum hauv pem teb, cov khoom sib xyaw hauv pem teb thiab hauv pem teb tawv. Lub npe raug yuav tsum yog PVC pem teb.
Ib
PVC tswvyim
Cov qauv ntawm PVC monomer yog ch2chcl
Qhov ceev yog 1380 kg / M? Vim tias qhov ntom ntawm cov hmoov pob zeb yog siab dua li ntawm PVC, qhov kev faib ua feem ntawm PVC thiab pob zeb hmoov cov ntsiab lus hauv pem teb tuaj yeem raug txiav txim raws li qhov ntom ntawm PVC pem teb.
Cov iav hloov pauv kub yog 87 degree, uas cuam tshuam rau thermal expansion thiab txias shrinkage ntawm PVC pem teb.
Lub melting point yog 212 degree, uas feem ntau txiav txim siab qhov kub ntawm PVC pem teb yuav hlawv.
Lub thermal conductivity (λ) yog 0.16 w / MK
Lub coefficient ntawm thermal expansion ( ) 8 10-5 / K ncaj qha txiav txim siab thermal expansion thiab contraction ntawm PVC pem teb.
Kev nqus dej (ASTM) yog 0.04-0.4, uas txiav txim siab tias PVC pem teb muaj dej tsis zoo thiab tsis muaj dej tsis zoo.
Ob
PVC pem teb muaj pes tsawg leeg
PVC thiab nws cov copolymer resin yog siv los ua cov ntaub ntawv tseem ceeb, muab tub lim, plasticizers, stabilizers, colorants thiab lwm yam khoom siv, uas yog tsim los ntawm txheej txheej txheej los yog calendering, extrusion los yog extrusion txheej txheem ntawm daim ntawv nruam substrate.
Peb
Classification ntawm PVC pem teb qauv
Raws li cov qauv, nws tuaj yeem muab faib ua peb hom: homogeneous, semi homogeneous thiab multilayer.
Ib qho yog homogeneous, uas yog, cov khoom siv hauv qab mus rau saum npoo yog tib yam; ib qho yog semi homogeneous, uas yog, ib txheej ntawm hnav- txheej tiv thaiv yog ntxiv rau saum npoo ntawm homogeneous, thiab lwm yam yog ntau- txheej txheej, uas yog ua los ntawm ntau- txheej txheej. Feem ntau, cov txheej sab saud yog cov ntshiab PVC pob tshab txheej, thiab cov txheej sab saud yog txheej txheej thiab rov qab txheej.
