Hoʻohana ʻia ke kaula polyethylene / PP i ke ola o kēlā me kēia lā

He kūpaʻa kemika maikaʻi ka Polyethylene a hiki ke pale aku i ka waika nitric dilute, dilute sulfuric acid a me kekahi ʻano o ka waikawa hydrochloric, hydrofluoric acid, phosphoric acid, formic acid, acetic acid, ammonia, amine, hydrogen peroxide, sodium hydroxide, potassium hydroxide a me nā hopena ʻē aʻe ma lumi mahana.Akā, ʻaʻole ia e kū i ka corrosion oxidation ikaika, e like me ka fuming sulfuric acid, concentrated nitric acid, chromic acid a me sulfuric acid mixture.I ka lumi wela, e hoʻohua nā mea hoʻoheheʻe lohi o ka polyethylene, a ma 90 ~ 100 ℃, ʻO ka sulfuric acid concentrated a me ka nitric acid concentrated e hoʻopau koke i ka polyethylene, e hana ʻino ʻia a decomposed.Polyethylene mea maʻalahi i ke kiʻi oxidation, thermal oxidation, ozone decomposition, maʻalahi e hoʻohaʻahaʻa ma lalo o ka hana o ke kukui ultraviolet, ʻeleʻele ʻeleʻele ka maikaʻi o ka pale pale kukui polyethylene. Hiki ke hana ʻia nā pane e like me ke kuʻi ʻana, ka haki ʻana i ke kaulahao a me ka hoʻokumu ʻana o nā pūʻulu unsaturated ma hope o ka radiation.

No ka polyethylene kaula i ka alkane inert polymer a he maikai kemika stability.At lumi wela, waika, alkali, paakai aqueous solution corrosion resistance, aka, aole ikaika oxidant e like me fuming sulfuric acid, concentrated nitric acid and chromic acid.Polyethylene insoluble in general solvents below 60 ℃, akā me ka aliphatic hydrocarbon, aromatic hydrocarbon, halogenated hydrocarbon a me nā mea pili lōʻihi e pehu a pohā paha.

ʻO ka polyethylene kaula ka hana ʻana o ka polyethylene, polyethylene no ke koʻikoʻi o ke kaiapuni (kemika a me ka hana mechanical) ʻoi aku ka maʻalahi, ʻoi aku ka maikaʻi o ka ʻelemakule wela ma mua o ka polymer chemical structure a me ka hoʻoili ʻana. i ka hanaʻana i nā kiʻiʻoniʻoni, nā mea hoʻopihapiha, nā ipu, nā paipu, monofilament, uea a me ke kaula, nā mea e pono ai i kēlā me kēia lā, a me nā mea'ē aʻe, a hiki ke hoʻohanaʻia e like me ke kiʻekiʻe o ka insulation mea no ka TV, radar, etc. ʻO ka polyethylene ua hoʻomohala wikiwikiʻia, e helu ana no kahi o 1/4 o ka nui o ka hanaʻana o nā plastics.I ka makahiki 1983,ʻo ka nui o ka hana polyethylene o ka honua he 24.65 mT, a he 3.16 mT ka mana o ka mea kanu.ʻO nā hualoaʻa helu hou loa i ka makahiki 2011, ua hiki i ka 96 MT ka mana hana honua, ʻo ke ʻano hoʻomohala o ka hana polyethylene e hōʻike ana e neʻe mālie ana ka hana a me ka hoʻohana ʻana i Asia, a ke lilo nei ʻo Kina i mākeke mea kūʻai nui loa.


Ka manawa hoʻouna: Jul-09-2021