Za PLA

PLA, yomwe imadziwikanso kuti polylactic acid ndi polymerized kuchokera ku poly lactic acid.asidi polylactic ali kwambiri biodegradability, ngakhale ndi mayamwidwe, si poizoni, si kupanga polima zakuthupi .lts zopangira ndi asidi polylactic, amene makamaka anachokera nayo nayonso mphamvu wowuma, monga com ndi rc.Itha kupezekanso kuchokera ku cellulose, zinyalala zakukhitchini kapena zinyalala za nsomba.

PLA ili ndi zida zambiri zopangira, ndipo zopangidwa kuchokera pamenepo zimatha kupangidwa mwachindunji kapena kutenthedwa, zomwe zimatha kukwaniritsa zofunikira zachitukuko chokhazikika Kuwonekera bwino komanso kulimba kwina, kuyanjana kwachilengedwe komanso kukana kutentha kwa PLA ndizo zifukwa zazikulu. chifukwa chofala kwambiri.

Komanso, PLA ali matenthedwe-pulasitiki ndipo angagwiritsidwe ntchito m'madera ambiri, monga kulongedza zipangizo, fillers, etc .. ake makamaka ntchito zinthu disposable monga tableware disposable ndi ma CD zipangizo, komanso zipangizo zamagetsi ndi chithandizo chamankhwala.

Poyerekeza ndi chikhalidwe petrochemical mankhwala, mowa mphamvu popanga asidi polylactic ndi 20% mpaka 50% ya mankhwala petrochemical, ndi mpweya woipa opangidwa ndi 50% ya mankhwala petrochemical . kuchepetsa mavuto a chilengedwe ndi mphamvu padziko lonse lapansi.

Zithunzi za PLA

1.Biodegradability

Poyerekeza ndi mapulasitiki achikhalidwe, polylactic acid imatha kusinthidwa kukhala CO2 ndi H2O ndi tizilombo toyambitsa matenda komanso kuwala.Zinthu zowononga zachilengedwe sizowopsa komanso siziwononga chilengedwe.The monomer kubala polylactic, amene thovu ndi mbewu monga tirigu mpunga ndi shuga beet kapena ulimi mtundu products.There, zopangira kubala asidi polylactic ndi zongowonjezwdwa.Mafuta a polylactic amagwiritsidwa ntchito kwambiri ngati zinthu zomwe zikukula pang'onopang'ono.

2. Bio-compatibility ndi Absorb-kuthekera

Polylactic acid imatha kupangidwa ndi hydrolyzed ndi asidi kapena enzyme kupanga lactic acid m'thupi la munthu.Monga metabolite ya maselo, asidi a polylactic amatha kusinthidwanso ndi michere m'thupi, kupanga CO2 ndi H2O.Chifukwa chake, asidi wa polylactic ndi wopanda poizoni komanso wopanda vuto kwa thupi la munthu komanso ali ndi kuyanjana kwachilengedwe komanso kuthekera koyamwa, Polylactic acid imatsimikiziridwa ndi US Food and Drug Administration yomwe ingagwiritsidwe ntchito ngati bio-material kuti implantation mu anthu.

3. Kutha Kwathupi

Monga thermoplastic polima zakuthupi, poly lactic acid imakhala ndi pulasitiki yabwino komanso yopangira thupi, yokhala ndi malo osungunuka kwambiri, kukhazikika bwino komanso kusinthasintha, komanso kuthekera kopanga matenthedwe.Poly lactic acid zipangizo monga zipangizo polima monga polypropylene (PP), polystyrene(PS), ndi polypropylene etha utomoni (PPO), akhoza processing ndi extrusion, anatambasula, ndi jekeseni nkhonya akamaumba.