ʻO ka laina hoʻoheheʻe nui HDPE Pipe Co-extrusion

ʻO ka paipu HDPE he paipu plastik maʻalahi i hana ʻia me ka thermoplastic high-density polyethylene i hoʻohana nui ʻia no ka wai haʻahaʻa haʻahaʻa a me ka hoʻoili kinoea.I kēia mau manawa i hala iho nei, ua hoʻohana nui ʻia nā paipu HDPE no ka lawe ʻana i ka wai inu, nā ʻōpala pōʻino, nā kinoea like ʻole, slurry, wai ahi, wai ʻino, a me nā mea ʻē aʻe.ʻO nā paipu polyethylene he mōʻaukala lawelawe lōʻihi a kaulana no ke kinoea, ʻaila, mining, wai, a me nā ʻoihana ʻē aʻe.Ma muli o kona haʻahaʻa haʻahaʻa a me ke kiʻekiʻe o ka corrosion, ke ulu nui nei ka ʻoihana paipu HDPE.I ka makahiki 1953, ua ʻike ʻo Karl Ziegler lāua ʻo Erhard Holzkamp i ka polyethene kiʻekiʻe kiʻekiʻe (HDPE).Hiki i nā paipu HDPE ke hana maika'i ma kahi ākea ākea o -2200 F a i +1800 F. Akā na'e,'a'ole i mana'o 'ia ka ho'ohana 'ana i nā Pipes HDPE ke 'oi aku ka mahana o ka wai ma mua o 1220 F (500 C).

Hana ʻia nā paipu HDPE e ka polymerization o ka ethylene, kahi huahana o ka aila.Hoʻohui ʻia nā mea hoʻohui like ʻole (stabilizers, fillers, plasticizers, softeners, lubricants, colorants, flame retardants, blowing agents, crosslinking agents, ultraviolet degradable additives, etc.) i hoʻohui ʻia e hana i ka paipu HDPE hope loa a me nā ʻāpana.Hana ʻia ka lōʻihi o ka paipu HDPE ma ka hoʻomehana ʻana i ka resin HDPE.A laila e hoʻokuʻu ʻia ma o kahi make, kahi e hoʻoholo ai i ke anawaena o ka pipeline.Hoʻoholo ʻia ka mānoanoa o ka pā paipu e ka hui pū ʻana o ka nui make, ka wikiwiki o ka wili, a me ka wikiwiki o ka tractor haul-off.ʻO ka maʻamau, hoʻohui ʻia ka 3-5% kalapona ʻeleʻele i ka HDPE e hana ia i ka pale UV, kahi e hoʻohuli ai i nā paipu HDPE i ʻeleʻele.Loaʻa nā ʻano kala ʻē aʻe akā ʻaʻole i hoʻohana pinepine ʻia.He 90-95% mau mea ʻeleʻele ka paipu HDPE waihoʻoluʻu a ʻōniʻoniʻo paha, kahi e hāʻawi ʻia ai kahi kaha kala ma 5% o ka ʻili o waho.