Ngokuqinisekileyo ngokuhambelana yesizwe standard tableware Melamine Dinnerware, qiniseka ukuba melamine kunye formaldehyde reaction ukuvelisa izinto melamine, basabela reaction vuhlayiseki, akayi kuphinda ukubuyisela melamine okanye formaldehyde, kodwa indlela abasabela ngayo, formaldehyde kubangela ( iimeko reaction efunekayo), okubangela indlela emva kokuphela imali encinci formaldehyde yamahala umbandela, kodwa ezilandelayo-up inkqubo phambili ethile formaldehyde simahla iya kukhupha inxenye, kusekho inxalenye ubukho iimveliso, uvavanyo abaphumelele (ezamahala Formaldehyde yokufudukela ngaphantsi kwe-15 ㎎ / ㎏, umgangatho EU), unga njengoko yorhwebo, ibe itafile.
IXINHUA News Agency, i-American Medical Association, "Medicine Medical" iphephancwadi ezipapashwe kutshanje ingxelo yophando ukuba melamine njenge ekrwada ekuveliseni tableware kwinkqubo eliphezulu lobushushu eziphathekayo, uya kukhupha izinto imichiza, kunye ukutya emzimbeni womntu.
Abaphandi ezikhethiweyo amaqela amabini abantu abadala esempilweni kunye nabafazi njengoko into yokufunda, ngokulandelelana, ukuze basebenzise isitya melamine kunye ukutya isitya ceramic. Zingaphelanga iiyure ezingama-12 zokutya, abaphengululi uvavanyo iisampulu zabo uchama.
Iziphumo zabonisa ukuba ukusetyenziswa Melamine Dinnerware iqela lezifundo, isiqulatho melamine avareji umchamo na elinye iqela amaxesha 6.4.
Uphononongo akazange ukuhlola ifuthe melamine kwimpilo yabantu, ukususela amacephe kwi melamine kukho ixesha elide nobungozi kwimpilo yabantu asinakukuqinisekisa. Iingcali sabonisa ukuba umsebenzi kidney usana athalala, ngokulula umonakalo umsebenzi wabo sezintso kangaka ixesha elide-dose ephantsi kwe melamine.
Melamine yinto ulungelelwaniso, esisetyenziswa ngokubanzi kwi Ipeyinti, iiplastiki, namayeza afanelekileyo, eyalukiweyo kunye nezinye iinkalo. Njengoko imveliso ukubanda nobushushu ukumelana kulungile, anti-drop ixesha elide, akukho lula ukuba unciphe, melamine njengoko izinto eziphambili ekrwada siluxelise porcelain tableware.
Abaphandi uthe umphakathi wezempilo melamine kunokukhokelela neziphumo zexesha elide eziphilayo kufuneka baqhubeke uphando.
Melamine formaldehyde resin ngokwayo non-yityhefu, kodwa nentlaka melamine formaldehyde iqulethe isixa esithile formaldehyde simahla, kwi imitha microwave iya kuba kade ukumkhulula, ngoko ukhuseleko, ukusetyenziswa melamine intlaka ezenziwe impahla ziya kumakishwa "ayikwazi ufakwe kwi microwave "ukuvana isilumkiso. Kodwa ke ngelishwa: Ngokutsho ukuhlola ndawo, ixabiso lemakethi yuan 13.000 ukuya 14,000 / ngetoni nganye izinto nentlaka melamine ekuveliseni ongekho mgangathweni porcelain tableware ngaphantsi kwama-20%. Ekubeni ixabiso ka 5000 yuan / ngetoni nganye urea-formaldehyde resin endaweni, ukuveliswa phantse mthethweni zoshishino tableware porcelain siyavumelana "imigaqo obufihliweyo."
Urea-fOrmaldehyde intlaka (UF)
Urea iviniga intlaka (okt urea formaldehyde intlaka) yi urea kunye formaldehyde ngokongeza polymerization abasabela ngayo nentlaka thermosetting. Indlela emayenziwe ngayo imveliso entsonkothileyo kakhulu, ngqo ubungakanani urea kunye formaldehyde, inkqubo reaction i-pH, iqondo lobushushu reaction, ixesha kunye nezinye iimeko. Le urea-formaldehyde resin, nto leyo kuhlelwe yi ingcamango yemveli, ikakhulu yahlulwe nezigaba ezibini. Inqanaba lokuqala le ukuyilwa methylol urea, nto leyo ke isigaba Ngaphezu reaction. Isigaba resin yesibini linqanam polycondensation reaction.
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ixesha Post: Jun-02-2017