Otu esi ahọrọ ma zụta
Mgbe ị na-azụta ihe nkiri nri ma ọ bụ ihe mkpuchi rọba, jide n'aka na ị ga-achọ aha aha ma ọ bụ usoro kemịkal, ma kpachara anya ma ọ bụrụ na ngwaahịa ahụ nwere naanị aha Bekee na enweghị akara China.Ọzọkwa, jide n'aka na ịhọrọ ngwaahịa ndị ejiri okwu "maka nri".
Enwere isi ihe abụọ nke ihe nkiri nri: polyethylene (PE) na polypropylene (PP).Ọnụ ego dị iche n'etiti ngwaahịa abụọ ahụ adịghị mma, ma polypropylene (PP) dị mma na ịkwụsị ntinye nke griiz.
Mgbe ị na-azụta ihe nkiri nri, a na-atụ aro ka ị zụta ihe nkiri na-ekpuchi onwe ya nke polyethylene (PE), karịsịa ma a bịa n'ichekwa anụ, mkpụrụ osisi na ihe ndị ọzọ, n'ihi na PE bụ ihe kachasị nchebe na nchekwa.Maka ndụ nchekwa ogologo oge, a na-atụ aro polyvinyl chloride (PVDC) n'ihi na ọ nwere ihe njide mmiri dị mma ma nwee ndụ nchekwa kachasị ogologo nke ụdị ihe nkiri nri atọ.Ihe nkiri cling polyvinyl chloride (PVC) bụkwa nhọrọ nke ọtụtụ mmadụ n'ihi nghọta ya dị mma, viscosity, ngbanwe ya na ọnụ ahịa dị ọnụ ala karịa, mana ekwesịrị iburu n'uche na enweghị ike iji ya chekwaa nri abụba n'ihi na ọ bụ resin nke polyvinyl chloride mejupụtara ya. resin, plasticizer na antioxidant, nke n'onwe ya adịghị egbu egbu.Otú ọ dị, plasticizers na antioxidants na-agbakwunyere na-egbu egbu.Ihe ndị a na-eji plastik mee ihe kwa ụbọchị bụ dibutyl terephthalate na dioctyl phthalate, bụ kemịkalụ na-egbu egbu.Nke a nwere mmetụta na-emebi emebi na sistemu endocrine mmadụ ma nwee ike imebi metabolism nke homonụ nke anụ ahụ.Lead stearate, polyvinyl chloride antioxidant, bụkwa ihe na-egbu egbu.Ngwaahịa PVC nwere antioxidants nnu nnu na-ebuli ndu mgbe ị na-akpakọrịta na ethanol, ether na ihe mgbaze ndị ọzọ.PVC nwere nnu nnu a na-eji dị ka nkwakọ nri na donuts, achịcha e ghere eghe, azụ e ghere eghe, ngwaahịa anụ esiri esi, achịcha na nri nri ga-ezute, ọ ga-eme ka mkpụrụ ndụ ndu na-agbasa n'ime griiz, yabụ na ị nweghị ike iji akpa rọba PVC maka nri nwere mmanụ.Tụkwasị na nke ahụ, ọ dịghị kpo oku ngwa ndakwa nri, enweghị okpomọkụ dị elu.N'ihi na ngwaahịa plastik PVC ga-eji nwayọọ nwayọọ na-emebi gas hydrogen chloride na okpomọkụ dị elu, dị ka ihe dị ka 50 ℃, na gas a na-emerụ ahụ mmadụ, ya mere, e kwesịghị iji ngwaahịa PVC mee ihe dị ka nkwakọ ngwaahịa nri.
Oke ojiji
Nlele na-egosi na 100 gram leek nke a fụchiri n'ime mkpuchi rọba, mgbe awa 24 gachara, ọdịnaya vitamin C ya bụ 1.33 mg karịa mgbe a na-ekechighị ya, yana 1.92 mg karịa maka idina mmadụ n'ike na akwụkwọ letus.Agbanyeghị, nsonaazụ nnwale nke akwụkwọ nri ụfọdụ dị nnọọ iche.A na-echekwa 100 grams nke radish nke a fụchiri n'ime plastik otu ụbọchị, na vitamin C ya na-ebelata site na 3.4 mg, bean curd na 3.8 mg, na kukumba na-echekwa otu ụbọchị na otu abalị, na vitamin C ya na-efunahụ bụ ihe nhata. 5 apụl.
Nri esi nri, nri na-ekpo ọkụ, nri nwere abụba, karịsịa anụ, ọ kacha mma ka ị ghara iji nchekwa mkpuchi plastik.Ndị ọkachamara na-ekwu na mgbe ihe oriri ndị a na-abanye na fim nri, kemịkalụ dị n'ime ihe ahụ nwere ike ịpụ ngwa ngwa ma gbaba n'ime nri, nke nwere ike imebi ahụ ike.Ihe ka ọtụtụ n'ime ihe nkiri nri ndị a na-ere n'ahịa bụ site na otu vinyl masterbatch dị ka akpa rọba na-ejikarị eme ihe.Ụfọdụ ihe nkiri nri nri bụ polyethylene (PE), nke na-enweghị plasticizers na ọ dịtụ mma iji;ndị ọzọ bụ polyvinyl chloride (PVC), nke na-agụnyekarị stabilizers, lubricants, ihe nhazi inyeaka na ihe ndị ọzọ nwere ike imerụ mmadụ.Ya mere, ị ga-akpachara anya na nhọrọ.
Oge nzipu: Mar-16-2022