Polyhydroxyalkanoate PHA
Polyhydroxyalkanoate luv ua PHA, yog ib lo lus dav dav rau ib chav kawm ntawm cov polyesters hnyav molecular siab uas tsim los ntawm cov kab mob me me. PHA yog ua los ntawm pob kws, qos yaj ywm thiab lwm yam biomass raws li hmoov txhuv nplej siab lossis straw cellulose ua cov khoom siv raw, fermented los tsim lactic acid, thiab ntxiv purified thiab polymerized los npaj cov PLA siab-purity, uas yog tus phooj ywg ib puag ncig, tsis muaj tshuaj lom, antibacterial, hluav taws kub retardant thiab zoo biocompatibility.
PHA qib txhaj tshuaj molding, qib blister, qib blow film, qib ua npuas ncauj, thiab lwm yam khoom siv biodegradable tag nrho thoob plaws hauv kab. PHAs yog ib hom khoom siv polyhydroxyalkanoates (PHA), uas yog cov khoom siv biopolymer ncaj qha synthesized los ntawm kev fermentation microbial hauv cov kab mob me me. PHAs muaj cov khoom muaj nqis ntxiv xws li biocompatibility, biodegradability, thiab piezoelectric. Lawv muaj kev siv tau zoo thiab cov khoom ua tiav, thiab lawv cov khoom yooj yim zoo ib yam li polypropylene. Lawv tuaj yeem ua tiav thiab pwm siv cov khoom siv ua yas ib txwm muaj xws li kev txhaj tshuaj molding, extrusion, tshuab zaj duab xis, kos hlau, thiab molding, thiab tuaj yeem hloov feem ntau ntawm cov yas roj av. Tus nqi biodegradation ntawm PHAs tuaj yeem tswj tau los ntawm cov khoom sib xyaw ntawm lawv cov copolymers raws li cov kev xav tau ntawm daim ntawv thov sib txawv.
| Khoom | Chav tsev |
| Qhov Ceev | 1.28 g/cm3 |
| MFR 170 ℃, 2160g | 2.5 g/10 feeb |
| Ntau yam yaj | 140–160 ℃ |
| Vicat A/120 | 55 ℃ |
| Lub zog tensile | 35 MPa |
| Kev Txuas Ntxiv | 150% |
| Flexural Modulus | 2500 MPa |
| Dej Nqus Tau | <0.3% |
Qhov tshwj xeeb tshaj plaws ntawm PHA yog tias nws tuaj yeem raug rhuav tshem los ntawm cov kab mob me me hauv yuav luag txhua qhov chaw ib puag ncig, xws li cov av compost, av, dej hiav txwv, thiab lwm yam. Cov khoom tom qab rhuav tshem feem ntau yog dej thiab carbon, thiab yuav tsis ua rau ib puag ncig puas tsuaj. Qhov kev tshawb pom no tau tsa lub suab ntawm PHA hauv kev lag luam ntawm cov khoom yas pov tseg hauv qab keeb kwm yav dhau los ntawm kev txwv yas, thiab tseem muab kev xav txog kev txhim kho ntsuab thiab ruaj khov rau cov khoom hloov yas thawj.
PHA yog cov khoom siv biodegradable uas siv cov biomass rov ua dua tshiab ua cov khoom siv raw thiab yog synthesized los ntawm cov kab mob me me; PHA muaj kev ua tau zoo heev ntawm kev tsis muaj tshuaj lom thiab yog cov yas tsis muaj tshuaj lom lossis txawm tias noj tau degradable.
Kev siv dua thiab kho PHA kuj muaj cov txiaj ntsig tshwj xeeb - cov yas pov tseg ib txwm muaj feem ntau pov tseg los ntawm kev pov tseg lossis hlawv, ua rau muaj teeb meem ua qias tuaj xws li av thiab huab cua. PHA, ntawm qhov tod tes, tuaj yeem ua tiav los ntawm ntau yam kev kho mob thiab siv ua khoom noj los tsim cov txiaj ntsig kev lag luam dua, ua tiav ob lub voj voog ntawm cov khoom siv thiab kev lag luam.
25kg/hnab los yog raws li cov neeg xav tau
Polyhydroxyalkanoate PHA
Polyhydroxyalkanoate PHA
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