ʻO nā pā polyethylene kēia no ka mea, ua ālai nā kaulahao molekala i ko lākou photocrystals, e waiho ana i kahi ʻāpana amorphous nui i loko o ka biomolecule, hiki i nā pā polyethylene ke komo i ka nui o ka ikehu kinetic. Wahi a ka ʻōlelo, hoʻohana ʻia ke ala astm-D256 e hoʻoholo ai i ka hopena o ka waiwai o ka ikaika compressive plastic. E like me ka hoʻohālikelike ʻana, hiki ke hoʻokaʻawale ʻia ka ikaika compressive o ka papa polyethylene i polycarbonate, ʻike ʻia ka polycarbonate no kona kū ʻana i ka hopena, a hiki ke hoʻohana ʻia e like me nā huahana kaila maʻamau.
He haʻahaʻa loa ke kūʻē ʻana o ka pā polyethylene. ʻOi aku ka maikaʻi o ka ʻaʻahu ʻana o ka papa polyethylene, ka haʻahaʻa haʻahaʻa haʻahaʻa a me ka maikaʻi ponoʻī. ʻO ia ka moeʻuhane maka o ka bushing, roller and bushing. ʻO ke koho ʻana o ka papa polyethylene e like me ka friction pair, ʻaʻole hiki ke hoʻomaikaʻi wale i ke ola lawelawe i hōʻino ʻia o nā keʻena, ka papa polyethylene a hiki ke mālama i nā kumuwaiwai.
ʻO ka papa polyethylene maikaʻi ke kūpaʻa kemika. ʻOi aku ka maikaʻi o ka pale kemika i ka papa polyethylene. Ma waho aʻe o ka waikawa nitric concentrated a me ka waikawa sulfuric, ʻaʻole maʻalahi ka papa polyethylene e hoʻopaʻa ʻia i loko o kekahi hopena alkaline a acidic. Hiki ke hoʻohana ʻia e like me ka waika hydrochloric dilute ma 80 ℃, i ka sodium cyanide & LT; ʻO ka waiʻona hydrochloric & lt; 75% maʻemaʻe, hiki ke hoʻohana pū me ka wai a me ka hoʻomaʻemaʻe wai. E like me ka ʻike ʻana o nā mea āpau, maʻalahi loa ka pehu o ka papa polyethylene i nā aliphatic hydrocarbons a i ʻole halogenates (ʻoi loa i ka hoʻomau ʻana i ke kiʻekiʻe kiʻekiʻe), no laila pono e uku ʻia i kāna hoʻohana.
E hoʻomaikaʻi i ka pale ʻana o ka papa polyethylene. ʻO ke kūpaʻa lole kiʻekiʻe kekahi o nā hiʻohiʻona hoʻowalewale, ka papa polyethylene i ka nui o nā papahana i ka hoʻohana ʻana i kahi waiwai hoʻohana kī. I kēia pae, ʻo nā papa polyethylene plastik āpau ke kūpaʻa maikaʻi i ka lole, a ʻo ka nui o nā mea metala ʻaʻole maʻamau e like me ka wā ma mua. Me ka hoʻomaikaʻi ʻana o ka paona molekala o ka polyethylene kiʻekiʻe, ua hoʻomaikaʻi ʻia ka pale ʻana o kēia ʻano mea. Ka hopena o ka papa polyethylene. Pili ka ikaika compressive o ka pā polyethylene i kona kaumaha mole. Ke emi iho ka paona molekala pili ma mua o 2 miliona, piʻi ka ikaika compressive o ka pā polyethylene me ka piʻi ʻana o ka paona molekala pili, a ʻo ka waiwai kiʻekiʻe ma kahi o 2 miliona. I kēia manawa, e emi ana ka ikaika compressive hopena me ka piʻi ʻana o ke kaumaha molekala pili.
Ka manawa hoʻouna: Mei-31-2022
