Muaj ntau cov qauv los ntsuas cov pob tshab ntawm qee cov yas, xws li lub teeb xa hluav taws xob, hluav taws xob taws teeb, hluav taws xob index birefringence thiab dispersion.
Raws li kev xa khoom ntawm cov khoom, nws tuaj yeem muab faib ua: cov ntaub ntawv pob tshab: qhov xa tawm ntawm lub teeb pom kev nrog lub wavelength ntawm 400nm-800nm yog siab dua 80 feem pua; Cov ntaub ntawv translucent: qhov xa tawm ntawm lub teeb pom kev ntawm 400nm txog 800nm yog 50 feem pua - Ntawm 80 feem pua; opaque cov ntaub ntawv: lub refractive index ntawm pom lub teeb los ntawm 400 nm mus rau 800 nm yog qis dua 50 feem pua. Raws li kev faib tawm saum toj no, cov resins tuaj yeem muab faib ua pob tshab: feem ntau suav nrog PMMA, PC, PS, PET, PES, JD series, CR-39, SAN (tseem hu ua AS), TPX, HEMA, BS ( kuj hu ua K resin) thiab lwm yam.; Translucent resin: PP, PA; Opaque resin: ABS, POM, PTFE, PF, thiab lwm yam.
Lub hauv paus ntsiab lus ntawm kev txhim kho cov pob tshab ntawm cov yas: txo cov crystallinity, tswj qhov zoo ntawm kev huv, ua kom cov refractive index, thiab txo cov birefringence.
Ntxiv txhawm rau txhim kho cov pob tshab ntawm cov yas, cov tshuaj nucleating tuaj yeem ntxiv, uas yog txoj hauv kev zoo tshaj plaws los ua kom lub teeb xa hluav taws xob ntawm cov pob tshab pob tshab, thiab nws tuaj yeem txhawb cov crystallization ntawm cov khoom me me. Nws tuaj yeem ua lub luag haujlwm ntawm crystal nucleus hauv cov resin.
Kev sib xyaw ua ke los txhim kho cov pob tshab ntawm cov yas yog ntxiv lwm cov resins rau pob tshab resin los txhim kho cov pob tshab.
Biaxial stretching txhim kho cov pob tshab ntawm cov yas, uas tuaj yeem rhuav tshem cov khoom siv lead ua qub hauv cov khoom thiab txo cov siv lead ua loj kom ua tiav lub hom phiaj ntawm kev txhim kho lub teeb transmittance.