Yuav ua li cas paub qhov zoo thiab qhov phem degradable hnab?
Jul 09, 2024
Yuav kom paub qhov txawv ntawm qhov zoo ntawm lub hnab degraded, koj tuaj yeem ua nws los ntawm cov kauj ruam hauv qab no:
1. Tshawb xyuas seb cov ntaub ntawv tsim khoom ntawm lub hnab yas puas tiav: xyuas seb lub hnab yas puas muaj lub npe tiav, daim duab qhia, cov khoom muaj pes tsawg leeg, degradation tej yam kev mob, specifications, load-bearing muaj peev xwm, thiab cov ntaub ntawv chaw tsim tshuaj paus. Cov hnab yas tsis-degradable feem ntau ploj lawm ntau tshaj ib lossis ntau qhov tseem ceeb ntawm cov ntaub ntawv.
2. Tshawb xyuas cov ntaub ntawv ntawm lub hnab yas: txoj kev ntseeg siab tshaj plaws yog txhawm rau txheeb xyuas cov khoom siv. Cov ntaub ntawv tsis-degradable xa mus rau cov ntaub ntawv uas tsis yog biodegradable polymer uas muaj polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), ethylene-vinyl acetate (EVA), polyethylene terephthalate (PET) thiab lwm yam uas tsis yog-degradable. biodegradable polymer cov ntaub ntawv.
3. Saib ntawm cov qauv siv: Tam sim no muaj peb txoj kev siv hauv Suav teb, uas GB / T 38082-2019 biodegradable yas khw hnab yuav tsum tau lawv biodegradability ntau dua lossis sib npaug li 90%, thaum GB / T {{3} } thiab GB/T 38079-2019 cov qauv tsis muaj cov cai tshwj xeeb rau "degradability" ntawm cov hnab yas.
4. Saib lub npe: Cov hnab yas biodegradable muaj lub npe meej, xws li "cov hnab yas khw muag khoom rau kev sib cuag zaub mov ncaj qha" lossis "cov hnab yas biodegradable rau kev sib cuag ncaj qha nrog cov khoom tsis yog khoom noj", thaum lub hnab ntim khoom uas tsis yog degradable yuav tsis siv. lub npe.
5. Cov khoom siv txiav txim siab: Cov khoom siv yas biodegradable tiag tiag feem ntau yog polylactic acid (PLA), polyadipic acid / butylene terephthalate (PBAT) lossis PLA + PBAT + starch (St). Yog tias cov khoom muaj polypropylene (PP), polyethylene (PE), thiab high-density polyethylene (HDPE), nws yuav tsis yog cov yas biodegradable tiag.
6. Daim ntawv pov thawj: Yog hais tias cov khoom muaj ib tug meej degradable ntawv pov thawj, xws li raws li nyob rau hauv lub tebchaws United States ASTM D6400 thiab EU EN 13432 tus qauv, theoretically nws yuav tsum compostable thiab degradable.
Los ntawm cov kauj ruam no, cov neeg siv khoom tuaj yeem paub qhov txawv ntawm qhov zoo ntawm lub hnab degradable thiab tsis txhob yuav cov khoom cuav degradable.