Njirimara anụ ahụ na kemịkalụ nke resin polyethylene

Njirimara anụ ahụ na kemịkalụ nke resin polyethylene

Njirimara anụ ahụ na kemịkalụ nke resin polyethylene

Chemical Properties

Polyethylene nwere ezigbo nkwụsi ike nke kemịkalụ ma na-eguzogide ọgwụ nitric acid, itughari sulfuric acid na ntinye ọ bụla nke hydrochloric acid, hydrofluoric acid, phosphoric acid, formic acid, acetic acid, mmiri amonia, amines, hydrogen peroxide, sodium hydroxide, potassium hydroxide, wdg. ngwọta. Mana ọ naghị eguzogide corrosion siri ike oxidative, dị ka fuming sulfuric acid, nitric acid concentrated, chromic acid na sulfuric acid ngwakọta. N'ebe okpomọkụ dị n'ime ụlọ, ihe mgbaze ndị ahụ a kpọtụrụ aha n'elu ga-eji nwayọọ nwayọọ na-emebi polyethylene, ebe na 90-100 ° C, sulfuric acid na-etinye uche na nitric acid ga-agbaji ngwa ngwa polyethylene, na-eme ka e bibie ma ọ bụ mebie ya. Polyethylene dị mfe ịbụ foto-oxidized, na-ekpo ọkụ na-ekpo ọkụ, nke ozone mebiri emebi, ma na-eweda ya ngwa ngwa n'okpuru ọrụ nke ụzarị ultraviolet. Carbon ojii nwere mmetụta mkpuchi ọkụ dị mma na polyethylene. Mmeghachi omume dị ka njikọ n'ofe, ụdọ scission, na nguzobe nke unsaturated otu nwere ike ime mgbe irradiation gasịrị.

n'ibu Njirimara

Ihe eji arụ ọrụ nke polyethylene bụ mkpụrụ ndụ ihe nketaral, Ike nkwụsị dị ala, nkwụsị nke na-akpụ akpụ adịghị mma, na mmetụta nkwụsị dị mma. Mmetụta mmetụta LDPE>LLDPE>HDPE, ndị ọzọ n'ibu Njirimara LDPE crystallinity na ikwu molekul arọ, na mma nke ndị a egosi, ya n'ibu Njirimara na-abawanye. Nguzogide mgbawa gburugburu ebe obibi adịghị mma, mana mgbe ịdị arọ molekụla nke ikwu na-abawanye, ọ na-akawanye mma. Ezigbo nkwụsi ike, n'ime nke LLDPE kacha mma.

Njirimara gburugburu ebe obibi

Polyethylene bụ polymer inert alkane nwere ezigbo nkwụsi ike kemịkalụ. Ọ na-eguzogide corrosion site acid, alkali na nnu aqueous ngwọta na ọnụ ụlọ okpomọkụ, ma ọ dịghị eguzogide oxidants siri ike dị ka oleum, concentrated nitric acid na chromic acid. Polyethylene bụ insoluble na nkịtị solvents n'okpuru 60 Celsius C, ma ọ ga-aza ma ọ bụ gbawa na ogologo oge kọntaktị na aliphatic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, wdg Mgbe okpomọkụ gafere 60 ℃, ọ ga-etisasịwo na a obere ego na toluene. , amyl acetate, trichlorethylene, turpentine, nke mral mmanụ na paraffin; Mgbe okpomọkụ dị elu karịa 100 ℃, enwere ike ịgbaze ya na tetralna.

Ebe ọ bụ na ụmụ irighiri ihe polyethylene nwere obere ọnụọgụ abụọ na njikọ ether, ikpughe anyanwụ na mmiri ozuzo ga-eme ka ịka nká, nke kwesịrị imeziwanye site n'ịgbakwunye antioxidants na ìhè stabilizers.

Njirimara nhazi

N'ihi na LDPE na HDPE nwere ezigbo mmiri mmiri, okpomọkụ nhazi dị ala, viscosity na-agafeghị oke, ọnọdụ okpomọkụ dị ala, ma ghara ire ere na elu okpomọkụ nke 300 ℃ na gas inert, ha bụ plastik nwere ezigbo nhazi nhazi. Otú ọ dị, viscosity nke LLDPE dị ntakịrị elu, na ike moto kwesịrị ịbawanye site na 20% ruo 30%; ọ na-adịkarị mfe ịgbaze agbaji, ya mere, ọ dị mkpa ịbawanye oghere ọnwụ ma gbakwunye ihe enyemaka nhazi; Okpomọkụ nhazi dị ntakịrị elu, ruo 200 ruo 215 Celsius. Polyethylene nwere obere nnabata mmiri na ọ dịghị achọ ihicha tupu nhazi.

Polyethylene gbazere bụ mmiri na-abụghị Newtonian, na viscosity ya na-agbanwe obere na okpomọkụ, ma na-ebelata ngwa ngwa na mmụba nke shear ọnụego ma nwee njikọ linear, n'ime nke LLDPE na-eji nwayọọ nwayọọ belata.

Ngwaahịa polyethylene dị mfe kristal n'oge usoro jụrụ oyi, ya mere, a ga-akwụ ụgwọ nlebara anya na okpomọkụ ebu n'oge nhazi. Iji chịkwaa kristal nke ngwaahịa ahụ, ka o wee nwee ihe dị iche iche. Polyethylene nwere nnukwu ọkpụkpụ ịkpụzi, nke a ga-atụle mgbe ị na-emepụta ihe.

Njirimara anụ ahụ na kemịkalụ nke resin polyethylene

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