Iyo Thermoplastic Polymers Inotyisa?
Mapolymer ethermoplastic rudzi rwepurasitiki inogona kunyungudutswa uye kuchinjwazve kakawanda pasina kuchinja kukuru kwemakemikari. Anoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana, anosanganisira kurongedza, mota, kuvaka, uye kurapa. Zvisinei, pane kunetseka kuri kukura pamusoro pechepfu inogona kukonzerwa nemapolymer ethermoplastic uye kukanganisa kwayo pahutano hwevanhu nenharaunda.
Kupisa kwe thermoplastic polymers kunoenderana nezvinhu zvakati wandei, kusanganisira kuumbwa kwavo kwemakemikari, zvinowedzera, uye nzira dzekugadzirisa. Mamwe mapolima e thermoplastic, akadai se polyvinyl chloride (PVC), ine makemikari ane muchetura senge phthalates, lead, uye cadmium, anogona kubuda kunze kwechinhu uye kusvibisa nharaunda uye cheni yechikafu. PVC inozivikanwawo kuburitsa dioxins, boka rine muchetura wemakemikari anogona kukonzera kenza, matambudziko ekubereka uye ekukura, uye kukuvara kwe immune system.
Mamwe mapolima e thermoplastic, akadai se polyethylene (PE) uye polypropylene (PP), anonzi akachengeteka uye asina chepfu pane PVC. Nekudaro, ivo vangangove vaine zvekuwedzera senge stabilizers, antioxidants, uye plasticizers, izvo zvinogona kuve nemhedzisiro yehutano husina kunaka kana vakatama kunze kwechinhu uye kupinda mumuviri. Semuenzaniso, mamwe mapurasitiki anoshandiswa muPE nePP, akadai sebisphenol A (BPA) uye phthalates, akabatanidzwa nekukanganiswa kwehomoni, matambudziko ekukura, uye kenza.
Iyo huturu hwe thermoplastic polymers zvakare zvinoenderana nemaitiro avo ekugadzirisa. Dzimwe nzira dzekugadzirisa, dzakadai sekugadzira jekiseni uye extrusion, dzinogona kuburitsa utsi hune muchetura uye zvimedu zvinogona kukuvadza vashandi nenharaunda. Semuenzaniso, kugadzirwa kwepolycarbonate (PC), thermoplastic polymer inoshandiswa mumagetsi nemidziyo yekurapa, inosanganisira kushandiswa kwebisphenol A (BPA), kemikari yakabatanidzwa nekukanganiswa kwehomoni uye kenza.
Kudzikamisa huturu hunogona kuitika hwe thermoplastic polymers, mirau uye zviyero zvakagadziridzwa kudzikamisa kushandiswa kwemakemikari ane njodzi uye kuve nechokwadi chekuchengetedza kwevashandi nevatengi. Semuenzaniso, European Union yakarambidza kushandiswa kwemamwe phthalates mumatoyi uye zvigadzirwa zvekuchengeta vana, uye United States yakarambidza kushandiswa kwe lead uye cadmium muzvigadzirwa zvevatengi. Pamusoro pezvo, mamwe makambani akagadzira dzimwe nzira dzakachengeteka kune dzechinyakare thermoplastic polymers, senge biodegradable mapurasitiki akagadzirwa kubva kune zvinogonekazve zviwanikwa.
Mukupedzisa, huturu hwe thermoplastic polymers hunoenderana nekuumbwa kwavo kwemakemikari, zvekuwedzera, uye nzira dzekugadzirisa. Mamwe thermoplastic polymers, akadai PVC, ine makemikari ane chepfu anogona kubuda kunze kwechinhu uye kusvibisa zvakatipoteredza uye chikafu chekudya. Mamwe mapolima e thermoplastic, akadai sePE nePP, anoonekwa seakachengeteka asi anogona kunge aine zvekuwedzera zvinogona kuve nemhedzisiro yehutano. Kuve nechokwadi chekuchengetedzwa kwevashandi nevatengi, mirau yakasiyana-siyana uye zviyero zvakagadziridzwa kudzikamisa kushandiswa kwemakemikari ane njodzi uye kukurudzira kushandiswa kwedzimwe nzira dzakachengeteka.
