He aha nā ʻano ʻeke i ulana ʻia

ʻO ka polyethylene (PE) ka mea i hana nui ʻia ma nā ʻāina ʻē, aPolypropylene(PP) i hana nui ia ma Kina.He ʻano resin thermoplastic i hana ʻia e ka polymerization o ka ethylene.Ma ka ʻoihana, hoʻokomo pū ʻia nā copolymers o ka ethylene me kahi liʻiliʻi o α - olefins.ʻAʻole ʻono ka polyethylene, nontoxic, waxy, me ke kūpaʻa haʻahaʻa haʻahaʻa maikaʻi loa (hiki ke piʻi ka mahana haʻahaʻa haʻahaʻa - 70 ～ - 100 ℃), kūpaʻa kemika maikaʻi, kū i ka nui o ka waika a me ka erosion alkali (ʻaʻole kū i ka waikawa oxidizing), ʻaʻole hiki ke hoʻoheheʻe ʻia i nā solvents maʻamau. ma ka lumi wela, ka haʻahaʻa haʻahaʻa o ka wai a me ka insulation uila maikaʻi loa;akā, paʻakikī loa ka polyethylene i ke koʻikoʻi o ke kaiapuni (kemika a me ka hana mechanical) ʻAʻole maikaʻi ka pale ʻana o ka wela.ʻOkoʻa nā waiwai o ka polyethylene mai nā ʻano like ʻole, ma muli o ke ʻano o ka molekala a me ka nui.Hiki ke loaʻa nā ʻano like ʻole (0.91-0.96 g / cm3) o nā huahana e nā ʻano hana like ʻole.

Hiki ke hana ʻia ka polyethylene e ke ʻano hoʻoheheʻe o ka thermoplastic maʻamau (e ʻike i ka hoʻoili ʻana i ka plastic).Hoʻohana nui ʻia ia i ka hana ʻana i nā kiʻiʻoniʻoni, nā ipu, nā paipu, nā monofilaments, nā uea a me nā kaula, nā mea e pono ai i kēlā me kēia lā, etc. ʻO ka polyethylene ua ulu wikiwiki, a ʻo ka helu hoʻopuka e pili ana i ka 1 / 4 o ka nui o ka hana plastik.I ka makahiki 1983, he 24.65 MT ka nui o ka hana ana o ka polyethylene ma ka honua, a he 3.16 Mt ka nui o ka mea kanu e kukulu ana.

Polypropylene(PP)

He resin thermoplastic i loaʻa ma ka polymerization o propylene.ʻEkolu hoʻonohonoho o ka mea isotactic, ka mea random a me ka mea syndiotactic.ʻO ka waiwai isotactic ka mea nui o nā huahana ʻoihana.Polypropylenepū kekahi me nā copolymers o propylene me kahi liʻiliʻi o ka ethylene.ʻO ka maʻamau translucent kala ʻole paʻa, ʻaʻala ʻole ʻona ʻole.Ma muli o kona ʻano hana maʻamau a me ka crystallization kiʻekiʻe, ʻoi aku ka kiʻekiʻe o ka helu heheʻe e like me 167 ℃, a hiki ke hoʻopaʻa ʻia nā huahana e ka mahu.ʻO 0.90g/cm3 ka mānoanoa, ʻo ia ka ʻilika māmā loa.ʻOi aku ka maikaʻi o ka pale ʻana i ka corrosion, ka ikaika tensile 30MPa, ka ikaika, rigidity a me ka transparency ma mua o ka polyethylene.ʻO nā hemahema ka haʻahaʻa haʻahaʻa haʻahaʻa hopena hopena a me ka maʻalahi o ka ʻelemakule, hiki ke lanakila ma ka hoʻololi ʻana a me ka hoʻohui ʻana i ka antioxidant.

ʻO ke kala oʻeke i ulana ʻiahe keʻokeʻo keʻokeʻo a hinahina paha, ʻaʻohe mea ʻawaʻawa a ʻono ʻole, a ʻoi aku ka liʻiliʻi o ka pōʻino i ke kino kanaka.ʻOiai ua hana ʻia ia me nā plastic kemika like ʻole, ikaika kona palekana kaiapuni, a nui kona ikaika hana hou;

Nā ʻeke i ulana ʻias ua hoʻohana nui ʻia, no ka hoʻopili ʻana a me ka hoʻopili ʻana i nā ʻatikala like ʻole, a hoʻohana nui ʻia i ka ʻoihana;

Palakiʻeke i ulana ʻiahana ʻia maiPolypropyleneʻo ka resin ka mea maka nui, kahi i hoʻokuʻu ʻia a hohola ʻia i loko o ka filament palahalaha, a laila ulana ʻia a hana ʻia i ʻeke.

Pākīpika huiʻeke i ulana ʻiahana ʻia me ka lole i ulana ʻia e ka lipine.

Hoʻohana ʻia kēia ʻano huahana no ka hoʻopili ʻana i ka pauka a i ʻole nā ​​mea paʻa paʻa granular a me nā ʻatikala maʻalahi.ʻO ka plastic compositeʻeke i ulana ʻiaua māhele ʻia i ʻelua i loko o ka ʻeke hoʻokahi a ʻekolu i loko o ka ʻeke hoʻokahi e like me ke ʻano kumu kumu.

E like me ke ʻano o ka humuhumu ʻana, hiki ke hoʻokaʻawale ʻia i ka ʻeke humuhumu lalo, ʻeke ʻeke humuhumu lalo, ʻeke hoʻokomo ʻana a me ka ʻeke humuhumu adhesive.

Wahi a ka laulā kūpono o ka ʻeke, hiki ke hoʻokaʻawale ʻia i 350, 450, 500, 550, 600, 650 a me 700mm, a e ʻae ʻia nā kikoʻī kūikawā e ka mea hoʻolako a me ka mea noi.