Ọ bụ na-na akara na mba Melamine efere iji nri ọkọlọtọ tableware, ị pụrụ ijide n'aka na melamine na formaldehyde mmeghachi omume na-emepụta melamine ihe onwunwe, mmeghachi omume irreversible mmeghachi omume, ga-ọ bụghị otu ugboro ọzọ weghachi melamine ma ọ bụ formaldehyde, ma na nke a mmeghachi omume, formaldehyde bụ oké ( Mmeghachi omume ọnọdụ chọrọ), dapụtara na mmeghachi omume mgbe ọgwụgwụ nke a obere ego nke free formaldehyde na ihe onwunwe, ma na ndị na-elu usoro nke nhazi ụfọdụ free formaldehyde ga hapụ a akụkụ, e nwere ndị ka akụkụ nke ịdị adị nke na ngwaahịa, ule ruru eru (free Formaldehyde Mbugharị erughị 15 ㎎ / ㎏, na EU ọkọlọtọ), i nwere ike dị ka a nnweta, n'ime anyị table.
Xinhua News Agency, na American Medical Association, "Medical Medicine" magazine bipụtara na nso nso a nnyocha Akuko na melamine ka a akụrụngwa n'ihi na mmepụta nke tableware na elu okpomọkụ usoro, ga hapụ chemical bekee, na nri n'ime ahụ mmadụ.
The na-eme nnyocha họrọ abụọ iche iche nke toworo eto ahụ ndị ikom na ndị inyom dị ka ihe ọmụmụ, karị, nke mere na ha na-eji melamine nnukwu efere na seramiiki nnukwu efere nri oriri. N'ime awa 12 nke na-eri, na-eme nnyocha na-anwale ha mmamịrị n'omume.
The results gosiri na ojiji nke Melamine efere iji nri otu nke na-achị, nkezi melamine ọdịnaya nke mmamịrị bụ ihe ọzọ na otu nke 6.4 ugboro.
The-amụ adịghị amata mmetụta nke melamine na ụmụ mmadụ ọrịa, si cutlery na melamine bụ a ogologo oge nsogbu ụmụ mmadụ ike ike enen. Ọkachamara kwuru na nwa ọhụrụ ọrụ nke akụrụ na-adịghị ike, ka ogologo oge ala-dose oriri nke melamine mfe imebi ha gbasara akụrụ ọrụ.
Melamine bụ organic compound, ọtụtụ-eji coatings, plastik, pharmaceuticals, textiles na ndị ọzọ ubi. Dị ka ngwaahịa na oyi na okpomọkụ na-eguzogide bụ ihe ọma, mgbochi dobe inogide, adịghị mfe ịjụ oyi, melamine dị ka isi akụrụngwa nṅomi poselin tableware.
Researchers kwuru na ọgwụ obodo na melamine pụrụ iduga ogologo oge ndu mmetụta kwesịrị ịnọgide na-eme nnyocha.
Melamine formaldehyde resin ya onwe ya bụ ndị na-abụghị na-egbu egbu, ma melamine formaldehyde resin nwere a ụfọdụ ego nke free formaldehyde, na ngwa ndakwa nri radieshon ga-adịghị ewe nyak, otú maka nchekwa, na ojiji nke melamine resin mere nke arịa ga-akara "ike a ga-etinye n'ime ngwa ndakwa nri "The iheoma aka ná ntị. Ma n'ụzọ dị mwute: Dị ka ntụpọ ndenye ego, ahịa price nke 13,000 ka 14,000 yuan / ton nke melamine resin ihe maka mmepụta nke ogbenye mma poselin tableware na-erughị 20%. Na price nke 5,000 yuan / ton nke urea-formaldehyde resin kama, fọrọ nke nta n'uzo na ezighi ezi na mmepụta nke poselin tableware ụlọ ọrụ tacit "zoro ezo iwu."
Urea-fOrmaldehyde resin (UF)
urea mmanya resin (ie urea formaldehyde resin) bụ urea na formaldehyde site na-agbakwụnye polymerization mmeghachi omume nke thermosetting resin. Ọdịdị ngwaahịa dịtụ mgbagwoju, kpọmkwem site na ego nke urea na formaldehyde, mmeghachi omume usoro pH, mmeghachi omume okpomọkụ, oge na ndị ọzọ na ọnọdụ. The urea-formaldehyde resin, nke a na-synthesized site omenala Ozizi, tumadi kewara abụọ nkebi. The akpa ogbo bụ guzobere methylol urea, nke bụ na mgbakwunye na mmeghachi omume ogbo. Nke abụọ ogbo resin bụ polycondensation mmeghachi omume ogbo.
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Post oge: Jun-02-2017