Muaj ntau hom kav dej, suav nrog HDPE thiab PE kav, uas feem ntau siv hauv tsev. Qhov txawv ntawm ob yog dab tsi?
1. Ua ntej ntawm tag nrho cov, Scope ntawm daim ntawv thov ntawm ob yog txawv. Yog tias koj xaiv cov kav dej HDPE, nws feem ntau tsim nyog rau cov kav dej hauv nroog lossis sab nraum zoov lossis cov kav dej faus rau hauv cov tsev. Qhov laj thawj tseem ceeb yog tias lub siab tsis kam yog qhov muaj zog heev thiab muaj qee yam corrosion kuj. Yog tias koj xaiv cov kav dej PE, nws yog siv rau kev kho kom zoo nkauj hauv tsev, nrog rau cov kav dej thiab cov pa roj carbon monoxide, thiab nws tseem tuaj yeem siv rau kev teeb tsa cov kav dej hauv pem teb, vim nws qhov kub thiab txias kuj zoo heev.
2. Lub zog kuj txawv. Lub zog thiab siab tus qauv ntawm cov kav dej HDPE yog siab dua, feem ntau vim nws xaiv PE resin nrog cov khoom siv zoo dua qub, uas yog 9 npaug zog dua PE kav.
3. Qhov hnav tsis kam coefficient kuj txawv. Ntawm tag nrho cov yeeb nkab cov ntaub ntawv, nws hnav tsis kam coefficient yog qhov zoo tshaj plaws, vim tias qhov hnyav molecular kuj siab, thiab PE zoo tib yam tsuas yog ib feem kaum ntawm HDPE.
