[Wehewehe laulā] He palakiko ka Polyethylene, i ʻike ʻia no kona lakio density kiʻekiʻe, ka maʻalahi a me ke kūpaʻa kemika. He kūpono ia no nā noi paipu kaomi a me nā noi paipu ʻole. Hana pinepine ʻia nā paipu HDPE me ka polyethylene 100 resin, me ka density o 930-970 kg/m3, ʻo ia hoʻi ma kahi o 7 mau manawa o ke kila.

He palakiko ka Polyethylene, i ʻike ʻia no kona lakio density kiʻekiʻe, ka maʻalahi a me ke kūpaʻa kemika. He kūpono ia no nā noi paipu kaomi a me nā ʻaʻole kaomi. Hana pinepine ʻia nā paipu HDPE me ka polyethylene 100 resin, me ka density o 930-970 kg/m3, ʻo ia hoʻi ma kahi o 7 mau manawa o ke kila. ʻOi aku ka maʻalahi o ka lawe ʻana a me ke kau ʻana i nā paipu māmā. ʻAʻole i hoʻopilikia ʻia ka Polyethylene e ke kaʻina hana electrochemical corrosion, a he mea maʻamau no nā paipu ke hōʻike ʻia i ka paʻakai, ka waikawa a me ka alkali. ʻAʻole e pala ka ʻili laumania o ka paipu polyethylene, a haʻahaʻa ka friction, no laila ʻaʻole i maʻalahi ka hoʻopilikia ʻia o ka paipu plastik e ka ulu ʻana o nā microorganism. ʻO ka hiki ke kūʻē i ka pōʻino corrosion a me ke kahe mau e hoʻohaʻahaʻa loa i nā koi mālama o nā paipu HDPe. Hiki ke hana ʻia ka paipu Polyethylene me ka resin i hoʻoikaika ʻia, i hoʻokaʻawale ʻia ʻo PE100-RC, a hoʻohui ʻia e hoʻolohi i ka ulu ʻana o ka māwae. Hiki i nā paipu i hana ʻia ke loaʻa i kahi ola lawelawe lōʻihi, a he pono waiwai ka polyethylene i ke ola o ka papahana.

I kēia manawa ua hoʻoholo ʻia ke kūpaʻa o nā paipu HDPe, he mea nui loa ka hoʻokele waiwai i ka wā e hoʻohana ʻia ai nā paipu polyethylene i nā noi ʻōnaehana mālama wai. Ke hoʻohālikelike ʻia me nā paipu hao ductile, ʻo ka pōmaikaʻi maopopo loa o nā paipu polyethylene hiki iā lākou ke pale i ka leakage. ʻElua ʻano o ka leakage pipeline: ka leakage hui, ka leakage pahū a me ka leakage perforation, he maʻalahi ke lawelawe.

Ka nui oPaipu HDPEma waena o 1600 mm a me 3260 mm, a hiki ke hoʻohana ʻia nā paipu nui ma ka mākeke i kēia manawa. Ma waho aʻe o nā ʻōnaehana hoʻolako wai kūlanakauhale, hiki ke hoʻohana ʻia nā paipu palaki nui i hana ʻia me ka polyethylene i nā hale hoʻohemo wai kai a me nā hale mālama wai ʻino. Hiki i nā paipu anawaena nui mai 315 cm a 1200 cm. ʻO ke anawaena nuiPaipu HDPeHe paʻa loa a hilinaʻi hoʻi. Ma hope o ke kanu ʻia ʻana i loko o ka lepo, hiki iā ia ke holo no nā makahiki he ʻumi a ʻaʻole pono ka mālama nui ʻana, no laila he kūpono loa ia no nā noi mālama wai ʻino. Hoʻonui ka paʻa o ka paipu polyethylene i ka piʻi ʻana o kona nui, e hōʻike ana i ka hana anti-vibration kupaianaha. E lawe i ka ōlaʻi Kobe 1995 ma Iapana ma ke ʻano he laʻana, ʻo ke kahua kūlanakauhale; hāʻule nā ​​​​paipu ʻē aʻe a pau ma ka liʻiliʻi hoʻokahi i kēlā me kēia 3 km, a ʻaʻohe hemahema o ka ʻōnaehana paipu HDPE holoʻokoʻa.

Nā pono o ka paipu HDPE: 1. Paʻa kemika maikaʻi: ʻAʻohe polarity o HDPE, kūpaʻa kemika maikaʻi, ʻaʻole hoʻoulu i ka algae a me ka bacteria, ʻaʻole unahi, a he huahana aloha kaiapuni. 2. Ikaika pili maikaʻi: e hoʻohana i ka socket electric fusion a i ʻole ka butt joint thermal fusion, me nā hono liʻiliʻi a ʻaʻohe leakage. 3. Palekana kahe wai haʻahaʻa: ʻO ka ʻili o loko oPaipu HDPeHe laumania, me ke koina pale haʻahaʻa a me ke kahe nui. 4. Kū'ē maikaʻi i ka mahana haʻahaʻa a me ka brittleness: ʻo ka mahana brittleness (-40), a ʻaʻole pono nā hana pale kūikawā no ke kūkulu ʻana i ka mahana haʻahaʻa. 5. Kū'ē abrasion maikaʻi: ʻO ka hoʻāʻo hoʻohālikelike o ke kū'ē abrasion o nā paipu polyethylene a me nā paipu kila e hōʻike ana he 4 mau manawa ke kū'ē abrasion o nā paipu polyethylene ma mua o nā paipu kila. 6. Anti-kahiko a me ke ola lawelawe lōʻihi: Hiki ke mālama ʻia a hoʻohana ʻia paha ka paipu HDPE ma waho no 50 mau makahiki me ka ʻole o ka hōʻino ʻia e ka radiation ultraviolet.