Xov xwm

Kev siv cov khoom siv hluavtaws los ntawm cov roj av yog qhov nyuaj vim muaj kev paub zoo heev ntawm cov pa phem dawb. Nrhiav cov khoom siv hluav taws xob txuas ntxiv dua tshiab ua lwm txoj hauv kev tau dhau los ua qhov tseem ceeb thiab ceev ceev. Polylactic acid (PLA) tau dav suav hais tias yog ib txoj hauv kev los hloov cov khoom siv roj av. Raws li cov khoom siv txuas ntxiv tau los ntawm biomass nrog cov khoom tsim nyog, biocompatibility zoo, thiab degradability, PLA tau ntsib kev lag luam tawg loj hauv engineering plastics, biomedical cov ntaub ntawv, textile, industrial ntim daim ntaub ntawv. Txawm li cas los xij, nws tsis tshua muaj hluav taws kub tsis kam thiab tsis tshua muaj zog hnyav txwv nws cov kev siv ntau yam.

Cov yaj sib xyaw ntawm polylactic acid (PLA) thiab thermoplastic silicone polyurethane (TPSiU) elastomer tau ua kom tawv PLA.

Cov txiaj ntsig tau pom tias TPSiU tau zoo sib xyaw rau hauv PLA, tab sis tsis muaj tshuaj lom neeg tshwm sim. Qhov sib ntxiv ntawm TPSiU tsis muaj qhov cuam tshuam rau cov iav hloov pauv kub thiab melting kub ntawm PLA, tab sis me ntsis txo cov crystallinity ntawm PLA.

Cov txiaj ntsig ntawm morphology thiab dynamic mechanical tsom xam tau pom tias tsis zoo thermodynamic compatibility ntawm PLA thiab TPSiU.

Kev tshawb fawb txog kev coj tus cwj pwm pom tau tias PLA / TPSiU yaj yog feem ntau cov kua dej pseudoplastic. Raws li cov ntsiab lus ntawm TPSiU nce, qhov pom tseeb viscosity ntawm PLA / TPSiU cov khoom sib xyaw ua ke pom qhov sib txawv ntawm qhov nce ua ntej thiab tom qab ntawd poob. Qhov sib ntxiv ntawm TPSiU tau muaj txiaj ntsig zoo rau cov khoom siv kho tshuab ntawm PLA / TPSiU cov khoom sib xyaw. Thaum cov ntsiab lus ntawm TPSiU yog 15 wt%, qhov elongation ntawm kev tawg ntawm PLA / TPSiU sib tov mus txog 22.3% (5.0 npaug ntawm PLA ntshiab), thiab lub zog cuam tshuam txog 19.3 kJ / m2 (4.9 npaug ntawm PLA ntshiab), qhia txog qhov zoo toughening nyhuv.

Piv nrog TPU, TPSiU muaj cov nyhuv toughening zoo dua ntawm PLA ntawm ib sab tes thiab zoo dua kub ua hauj lwm ntawm tes.

Txawm li cas los xij,SILIKE SI-TPVyog patented dynamic vulcanized thermoplastic Silicone-raws li elastomers. Nws tau kos ntau qhov kev txhawj xeeb vim nws qhov chaw nrog Unique silky thiab tawv-phooj ywg kov, zoo heev av sau tsis kam, zoo khawb kuj, tsis muaj plasticizer thiab softening roj, tsis muaj los ntshav / nplaum, tsis muaj ntxhiab tsw.

Ib yam li ntawd, zoo dua toughening nyhuv ntawm PLA.

Cov khoom siv tshwj xeeb muaj kev nyab xeeb thiab ib puag ncig zoo, muab kev sib xyaw ua ke zoo ntawm cov khoom thiab cov txiaj ntsig los ntawm cov thermoplastics thiab tag nrho cross-linked silicone roj hmab. suits rau wearable nto, engineering plastics, biomedical cov ntaub ntawv, textile, industrial ntim daim ntaub ntawv.

Cov ntaub ntawv saum toj no, excerpted los ntawm Polymers (Basel). 2021 Lub Rau Hli; 13(12): 1953., Toughening Modification of Polylactic Acid los ntawm Thermoplastic Silicone Polyurethane Elastomer. thiab, Super Tough Poly (Lactic Acid) Blends A Comprehensive Review” (RSC Adv., 2020,10,13316-13368)