ʻEkolu mau hoʻokaʻawale nui a me nā hoʻohālikelike hana o ka polypropylene (PP)

Polypropylene (PP) ʻo ia ka resin thermoplastic me ka liʻiliʻi loa o ka density. Hiki ke hoʻokaʻawale ʻia i homopolypropylene (PP-H) a me copolymerized polypropylene. Ua hoʻokaʻawale hou ʻia ka polypropylene Copolymerized i ka polypropylene copolymerized block (impact-resistant) (PP-H). B) a me ka polypropylene copolymerized random (random) (PP-R). Nui nā ʻano mea PP, no laila he aha ko lākou ʻokoʻa? I kēia lā e aʻo mākou e pili ana i nā PP like ʻole me ʻoe.

PP-H

Ua polymerized ʻia mai kahi monomer propylene hoʻokahi, ʻo ia ka liʻiliʻi loa o ka density ma waena o nā plastics maʻamau. He maʻamau loa kona kaulahao molekala, no laila he kiʻekiʻe ke crystallinity o ka mea a he haʻahaʻa nā waiwai hopena.

Nā Pōmaikaʻi: ʻoi aku ka ikaika a me ke kūpaʻa ʻana i ka pala.

Nā mea kūpono ʻole: ka pale ʻana i ka hopena maikaʻi ʻole (brittle), ka paʻakikī maikaʻi ʻole, ka paʻa ʻole o ka dimensional, ka maʻalahi o ka ʻelemakule, ka pale ʻole o ka wela a me ke kūpaʻa lōʻihi, a me nā waiwai pale maikaʻi ʻole i ka oxygen, carbon dioxide a me nā kinoea ʻē aʻe.

Hoʻohana: Hiki ke hoʻohana ʻia no nā lipine hoʻopili, nā ʻōmole i puhi ʻia, nā pulumu, nā kaula, nā ʻeke ulana, nā mea pāʻani, nā waihona, nā mīkini uila, nā huahana hale, nā pahu ʻaina microwave, nā pahu mālama, a me nā ʻiliʻili pepa wahī.

Pehea e ʻike ai: Ke puhi ʻia e ke ahi, e palahalaha ka uea a ʻaʻole lōʻihi.

PP-B

Loaʻa ia ma o ka copolymerizing propylene a me kahi ʻāpana o ka ethylene. ʻO ka nui o ka ethylene ma ka laulā he 7 a 15%. Eia nō naʻe, no ka mea, ʻo ka likelika o ʻelua mau monomers ethylene a me ʻekolu mau monomers e pili pū ana i loko o PP-B he kiʻekiʻe loa ia, ʻo ia hoʻi, ua hoʻokomo wale ʻia ka ethylene monomer i loko o ka pae ʻāpana, ʻaʻole i emi ka maʻamau o PP-H, no laila ʻaʻole hiki ke hoʻokō ʻia ke kumu o ka hoʻomaikaʻi ʻana i ke kiko heheʻe, ke kū'ē ʻana i ke kaomi hydrostatic lōʻihi, ke kū'ē ʻana i ka wela lōʻihi a me ka hana ʻana i nā paipu a me nā waiwai hana ʻana o PP-H.

Nā Pōmaikaʻi: ʻoi aku ka maikaʻi o ke kūpaʻa ʻana i ka hopena.

Nā mea kūpono ʻole: ka transparency haʻahaʻa, ka ʻōlinolino haʻahaʻa, ka pale ʻole ʻana i ka omo ʻana o ka makū, ke kūpaʻa ʻana i ka waikawa a me ka alkali corrosion, ke kūpaʻa solubility a me ke kūpaʻa oxidation i nā mahana kiʻekiʻe.

Hoʻohana: Hoʻohana ʻia i loko o nā bumpers, nā huahana lahilahi-pā, nā strollers, nā lako haʻuki, nā ukana, nā bākeke pena, nā pahu pila, a me nā huahana lahilahi-pā.

Pehea e ʻike ai: ʻAʻole ia e lilo i ʻeleʻele ma hope o ke hoʻā ʻia ʻana a hiki ke huki i waho i ka uea poepoe lōʻihi loa.

PP-R

Loaʻa ia ma o ka copolymerizing propylene monomer a me kahi liʻiliʻi o ka ethylene (1-4%) monomer ma lalo o ka hana o ka wela, kaomi a me ka catalyst. Hoʻokaʻawale ʻia ka ethylene monomer i loko o ke kaulahao lōʻihi o ka propylene. ʻO ka hoʻohui ʻana o ka ethylene e hōʻemi ana i ka crystallinity a me ka heheʻe o ka polymer, hoʻomaikaʻi i ka hopena o ka mea, ke kūpaʻa lōʻihi i ke kaomi hydrostatic, ke kūpaʻa lōʻihi i ka ʻelemakule oxygen thermal a me ka hana ʻana a me ka hoʻoheheʻe ʻana i ka paipu.

ʻO ke ʻano o ke kaulahao molekala PP-R, ka nui o ka monomer ethylene a me nā ʻōkuhi ʻē aʻe he hopena pololei i ke kūpaʻa wela lōʻihi, nā waiwai mechanical a me ka hana hana o ka mea. ʻO ka nui o ka hoʻolaha ʻana o ka monomer ethylene i loko o ke kaulahao molekala propylene, ʻoi aku ka nui o ka loli i nā waiwai polypropylene.

Nā Pōmaikaʻi: hana maikaʻi holoʻokoʻa, ikaika kiʻekiʻe, paʻakikī kiʻekiʻe, kūpaʻa wela maikaʻi, kūpaʻa maikaʻi o ka dimensional, paʻakikī haʻahaʻa haʻahaʻa maikaʻi loa (maʻalahi maikaʻi), transparency maikaʻi, a me ka gloss maikaʻi.

Nā Pōʻino: Hana maikaʻi loa ma waena o PP.

Hoʻohana: Hoʻohana ʻia i loko o nā paipu, nā ʻiliʻili hoʻēmi, nā ʻōmole kulu, nā ipu moakaka loa, nā huahana hale moakaka, nā syringe hoʻolei, a me nā ʻiliʻili pepa wahī.

Pehea e ʻike ai: ʻAʻole ia e lilo i ʻeleʻele ma hope o ke hoʻā ʻia ʻana a hiki ke huki i waho i ka uea poepoe lōʻihi loa.

Hoʻohālikelike o ʻekolu ʻano polypropylene

Ka ikaika hua tensile: homopolypropylene>block copolymerized propylene>random copolymerized propylene

Paʻa: Homopolypropylene > Poloka propylene i hoʻopili ʻia > Propylene i hoʻopili ʻia i ka maʻamau

Ikaika hopena: poloka propylene copolymerized > propylene copolymerized random > propylene homopolymerized

ʻIke maopopo: Proylene copolymerized maʻamau＞Proylene Homopolymerized＞Proylene copolymerized poloka

ʻO ka paʻakikī o ka mahana haʻahaʻa: poloka propylene copolymerized > propylene copolymerized random > propylene homopolymerized