Kubudirira kwazvino mu tekinoroji yepolyurethane inodzivirira moto (PU) kuri kuchinja mwero wekuchengetedza zvinhu mumaindasitiri. Makambani ekuChina ari kutungamira nemapatenti matsva: Jushi Group yakagadzira nano-SiO₂-enhanced waterborne PU, ichiwana oxygen index ye29% (Grade A fire resistance) kuburikidza ne phosphorus-nitrogen synergy, nepo Guangdong Yurong yakagadzira ternary intumescent flame retardant iyo inobatanidza makemikari kuma PU molecules, ichivimbisa kuchengetedzeka kwenguva refu pasina leaching. Kunming Zhezitao yakabatanidza phosphate-modified carbon fibers muPU elastomers, ichisimudzira kugadzikana kwekupisa uye kuumbwa kwechar panguva yekupisa.
Panguva imwe chete, tsvakiridzo yepasi rose inosimudzira mhinduro dzinochengetedza nharaunda. Chidzidzo che2025 ACS Sustainable Chemistry chakaratidza masisitimu asina halogen/silicon ayo anogonesa panguva imwe chete kudzivirira moto uye kudzivirira kudonha kwePU inoyerera mumvura. Nano-silica inobva mumakungu emupunga pamwe chete neasingade halogen inoratidza tarisiro yePU inochengetedza nharaunda, zvichiwedzera zvipingamupinyi zvekupisa pasina utsi hune chepfu.
Zvichitungamirirwa nemitemo yakasimba yekuchengetedza moto—yakaita seEU REACH neCalifornia TB 117—musika wepurasitiki unodzivirira moto unotarisirwa kukwira kubva pamadhora mabhiriyoni matatu nehafu ($3.5 bhiriyoni) (2022) kusvika pamadhora mabhiriyoni mashanu nehafu ($5.2 bhiriyoni) panosvika gore ra2030, Asia-Pacific ichitonga 40% yezvinodiwa pasi rose. Zvitsva zvinokoshesa kuenzana kwekuchengetedzwa, kugara kwenguva refu, uye kukanganisa nharaunda, zvichiratidza kukura kwekuchinja kwezvikamu zvekuvaka, mota, uye zvemagetsi.
Nguva yekutumira: Chikunguru-03-2025
