nūhou hoʻokahi

He aha kaUses a me na Waiwai oPʻolystyrenePepa aniani

ʻO ka Polystyrene (PS) he polymer synthetic i hana ʻia mai ka styrene monomer, ʻo ia ka thermoplastic amorphous, nonpolar commodity thermoplastic i maʻalahi e hana a hiki ke hoʻololi maʻalahi i ka nui o nā huahana semi-finished e like me ka pua, nā kiʻiʻoniʻoni, a me nā pepa. .ʻO ia kekahi o ka plastic commodity nui loa, nona ka ʻehiku pakeneka o ka mākeke thermoplastic.

He insulator uila maikaʻi loa ʻo PS, maikaʻi loa ka mālamalama optical ma muli o ka nele o ka crystallinity, a he kūʻē kemika maikaʻi i nā ʻakika a me nā kumu.Eia nō naʻe, he nui nā palena o ka polystyrene.Hoʻouka ʻia ʻo ia e nā mea hoʻoheheʻe hydrocarbon, loaʻa i ka oxygen maikaʻi ʻole a me ka pale ʻana o UV, a he palupalu, ʻo ia hoʻi, ʻaʻohe ikaika hopena ma muli o ka ʻoʻoleʻa o ka iwi kuamoʻo polymer.Eia kekahi, ʻoi aku ka haʻahaʻa o kona palena wela kiʻekiʻe no ka hoʻohana mau ʻana ma muli o ka nele o ka crystallinity a me kona mahana hoʻololi aniani haʻahaʻa ma kahi o 100°C.Ma lalo o kona Tg, loaʻa iā ia ka ikaika tensile waena a kiʻekiʻe (35 - 55 MPa) akā haʻahaʻa ka ikaika hopena (15 - 20 J/m).ʻOiai ʻo kēia mau nāwaliwali a pau, ʻo nā styrene polymers he mea nani loa nā plastic commodity nui.

ʻOi aku ka lahilahi a ʻoi aku ka palupalu o ka pepa polystyrene ma mua o ka pepa acrylic akā ʻoi aku ka liʻiliʻi o ke kumu kūʻai ma mua o nā plastics ʻē aʻe.He kiʻekiʻe ke aniani (ʻo ka lua wale nō i nā pepa acrylic i ka transmittance māmā), ʻoi aku ka maikaʻi o ka hopena o ka hopena, ke kū ʻana o ka wā a me ke kūpaʻa ʻelemakule ma mua o ka plexiglass, ʻoi aku ka maikaʻi o nā waiwai mechanical a me nā waiwai hoʻoili wela e like me ka plexiglass, like ka paʻakikī me ka plexiglass acrylic, wai. ʻOi aku ka liʻiliʻi o ka absorption and thermal expansion coefficient ma mua o ka plexiglass acrylic, akā ʻoi aku kona kumukūʻai ma mua o ka plexiglass acrylic.

ʻO ka Polystyrene ka mea i koho ʻia no nā noi he nui e pili ana i ka hoʻopili ʻana i ka meaʻai, nā mea hoʻohana i hoʻopau ʻia a me nā ʻāpana no ka optical, electronic/electrical, a me nā noi olakino.