HDPEa me PVC

ʻO nā mea plastik he elastic a malleable. Hiki ke hoʻoheheʻe ʻia, kaomi a hoʻolei ʻia i nā ʻano like ʻole. Hana ʻia lākou me ka ʻaila a me ke kinoea maoli. ʻElua ʻano o nā plastics; nā thermoplastics a me nā polymers thermoset.

ʻOiai hiki ke hoʻoheheʻe ʻia a hoʻoheheʻe ʻia nā polymers thermoset i hoʻokahi wale nō a paʻa paʻa i ka wā i maʻalili, hiki ke hoʻoheheʻe ʻia a hoʻoheheʻe pinepine ʻia nā thermoplastics a no laila hiki ke hana hou ʻia.

Hoʻohana ʻia nā Thermoplastics no ka hana ʻana i nā ipu, nā ʻōmole, nā pahu wahie, nā papa ʻaina a me nā noho, nā ʻeke, nā ʻeke plastik, nā insulators uwea, nā panela pōkā, nā mea pāʻani loko, nā upholstery, nā lole a me nā paipu.

Nui nā ʻano thermoplastics, a ua helu ʻia lākou he amorphous a semi-crystalline. ʻElua o lākou he amorphousPVC(polyvinyl chloride) a me ka semi-crystalline HDPE (polyethylene kiʻekiʻe kiʻekiʻe). ʻO nā polymers waiwai ʻelua.

ʻO ka Polyvinyl chloride (PVC) kahi polymer vinyl kūʻai ʻole a paʻa i hoʻohana ʻia i nā hana kūkulu. ʻO ia ke kolu o ka plastic i hoʻohana nui ʻia ma hope o ka polyethylene a me ka polypropylene a hoʻohana nui ʻia i ka hana ʻana i nā paipu. He māmā a ikaika hoʻi, e kaulana loa ia i nā noi paipu ma luna a me lalo. He mea paʻa loa a kūpono no ke kanu pololei ʻana a me ka hoʻokomo ʻana i ka auwaha.

Ma ka ʻaoʻao ʻē aʻe, ʻo ka polyethylene high density (HDPE) kahi polyethylene thermoplastic i hana ʻia mai ka ʻaila. ʻOi aku ka ikaika, ʻoi aku ka paʻakikī, a hiki ke kū i nā wela kiʻekiʻe.
He mea maʻalahi nā paipu HDPE no ka hoʻohana ʻana i nā paipu lalo, no ka mea, ua ʻike ʻia lākou e hoʻoheheʻe a hoʻopaʻa i nā nalu haʻalulu, a laila e hōʻemi i nā piʻi e hiki ke hoʻopilikia i ka ʻōnaehana. Loaʻa iā lākou ka ʻoi aku ka maikaʻi o ka pale ʻana i ka hoʻopili ʻana a ʻoi aku ka abrasion a me ka wela.

ʻOiai he ikaika a paʻa nā mea ʻelua, ʻokoʻa lākou i ka ikaika a me nā ʻano ʻē aʻe. Ma kekahiʻaoʻao, ua hoʻolālāʻia lākou e pale i nā koʻikoʻi likeʻole. No ka loaʻa ʻana o ka helu kaomi like me ka paipu PVC, pono e ʻoi aku ka mānoanoa o ka pā paipu HDPE ma mua o 2.5 mau manawa ma mua o ka paipu PVC.

ʻOiai hoʻohana ʻia nā mea ʻelua e hana i ke ahi,HDPEua ʻike ʻia ʻoi aku ka maikaʻi a me ka palekana o ka hoʻohana ʻana no ka mea hiki ke puhi i ke ahi i ke kiʻekiʻe kūpono. Inā ʻaʻole e hoʻomaka i loko o ka ipu a nahā, ʻaʻole e haki ka ipu HDPE me ka ikaika e like me ka ipu PVC.

E hōʻuluʻulu:

1. ʻO ka Polyvinyl Chloride (PVC) he polymer vinyl maʻalahi a paʻa i hoʻohana ʻia i nā hana kūkulu, ʻoiai ʻo High Density Polyethylene (HDPE) he polyethylene thermoplastic i hana ʻia mai ka ʻaila.
2. ʻO ka polyvinyl chloride ke kolu o ka plastic i hoʻohana nui ʻia, a ʻo ka polyethylene kekahi o nā plastics i hoʻohana nui ʻia.
3. He amorphous ka PVC, oiai he semi-crystalline ka HDPE.
4. He ikaika a paʻa nā mea ʻelua, akā me ka ikaika like ʻole a me nā noi like ʻole. ʻOi aku ke kaumaha a ʻoi aku ka ikaika o PVC, ʻoiai ʻoi aku ka paʻakikī o HDPE, ʻoi aku ka pale ʻana a me ka wela.
5. Ua ʻike ʻia nā paipu HDPE e hoʻopaʻa a hoʻopaʻa i nā nalu haʻalulu, a laila e hōʻemi i nā piʻi e hiki ke hoʻopilikia i ka ʻōnaehana, ʻoiai ʻaʻole hiki i ka PVC.
6. 'Oi aku ka pono o ka HDPE no ka ho'okomo 'ana i ke kaomi ha'aha'a, a 'o ka PVC ka mea kūpono no ke kanu pololei a me ka ho'okomo 'ole.