Ngokunyuka okuqhubekayo kweemveliso ze-silicone, zikuyo yonke indawo ebomini. Emva koko umbuzo uvela: Ngaba iimveliso ze-silicone ziqulethe "i-BPA" eyingozi?
Okokuqala, makhe siqonde ukuba yintoni "BPA"? I-BPA, ekwabizwa ngokuba yi-bisphenol A, isetyenziswa kwishishini ukwenza izinto ezifana ne-polycarbonate (PC) kunye ne-epoxy resin. Ukusukela ngeminyaka yoo-1960, ibisetyenziswa ukwenza iibhotile zeplastiki (zobisi), iikomityi ze-sippy zabantwana, kunye nenkonkxa yangaphakathi yokutya nesiselo (umgubo wobisi). Nangona kunjalo, i-BPA inokubangela ukuphazamiseka kwe-endocrine, isoyikise impilo yeentsana kunye nabantwana. Ukutyeba okubangelwa ngumhlaza kunye nokuphazamiseka kwemetabolism nako kukholelwa ukuba kunxulumene noku. I-European Union ikholelwa ukuba iibhotile zomntwana ezine-bisphenol A zinokubangela ukufikisa kwangaphambili. Ukususela ngo-Matshi 2, 2011, ukuveliswa kweebhotile zeentsana ezinemichiza ye-bisphenol A (BPA) yavalwa.
Okulandelayo, makhe sijonge kwiiyunithi ezisisiseko ze "silicone" i-organic silicone imveliso, eyenziwe ngesilicon -iyunithi yekhonkco yeoksijini, kunye namatyathanga asecaleni aqhagamshelwe kumaqela ahlukeneyo e-organic ngokusebenzisa iiathom zesilicon. Ngoko ke, kwisakhiwo seemveliso ze-silicone, kukho zombini "amaqela ezinto eziphilayo" kunye ne "inorganic structures".
Olu qulunqo olukhethekileyo kunye nolwakhiwo lwe-molekyuli luvumela ukuba ludibanise iimpawu zezinto eziphilayo kunye nemisebenzi ye-inorganic substances. Ijeli ye-silica ye-inorganic is amorphous substance kunye ne-chemical formula mSiO2 · nH2O. Ayinyibiliki emanzini nakusiphi na isinyibilikisi, {4}ayiyotyhefu kwaye ayinavumba, kwaye izinzile ngokwekhemikhali. Ayichaphazeli nayiphi na into ngaphandle kwe-alkali enamandla kunye ne-hydrofluoric acid. Irabha yeSilicone, ngenxa yeempawu zayo ezidityaniswe nezinto eziphilayo, ineempawu ezisisiseko ezinje ngoxinzelelo oluphantsi lomphezulu, i-viscosity encinci -i-coefficient yobushushu, ukucinezeleka okuphezulu, kunye nokungena kwegesi ephezulu. Ikwanazo neempawu ezibalaseleyo ezibandakanya ukumelana namaqondo obushushu aphezulu naphantsi, ukugqunywa kombane, ukuzinza kwe-oxidation, ukuxhathisa kwemozulu, ukungakhathali kwedangatye, ukugxotha amanzi, ukuxhathisa umhlwa,-ukungeyotyhefu, ukunganuki, kunye nokungangeni komzimba. I-silicone{11}}ayithukuthezi,{12}ayiyotyhefu kwizicubu zomntu, ayibangeli ukusabela kwalane, kwaye inokwaliwa okumbalwa kakhulu emzimbeni. Ineempawu ezibalaseleyo zomzimba kunye neekhemikhali.
Ngexesha lokudibana nolwelo lomzimba kunye nezicubu, inokugcina ukuqina kwayo kwasekuqaleni kunye nokuthamba ngaphandle kokuthotywa. Yinto engasebenziyo ezinzileyo. Iyakwazi ukumelana namaqondo obushushu aphezulu kwaye ibulawe iintsholongwane. Kukulungele ukusetyenzwa kunye nokwenza, kulula ukusetyenzwa kunye nokukrola iimilo, kwaye kulula ukuyisebenzisa. Kule nto, kunokubonwa ukuba ijeli ye-silica ayinayo "i-bisphenol A".