Ka nānā 'ana i nā waiwai maka o ka HDPE palua bellows
Ka nānā 'ana i nā waiwai waiwai o ka HDPE pālua pā pa'a,
ʻO ka resin HDPE no nā bellow pā pālua, pehea e koho ai i ka resin HDPE no nā bellow pā pālua,
ʻO nā koi maʻamau no nā waiwai o ka polyethylene (PE) he melt flow rate (MFR), density, flexure elastic modulus a me ka oxidation induction time (OIT), ka ikaika hopena, a me nā mea ʻē aʻe. , nā volatiles a me nā manawa induction oxidation ʻē aʻe e hoʻoholo i ka manawa o ka pōʻino oxidation.No nā bellows e koi ana i 50 mau makahiki o ka hoʻohana ʻana, ʻo ka kāohi ʻana i ka manawa induction o ka oxidation o nā mea maka ke kī e hōʻoia i ke ola lawelawe o 50 mau makahiki.Ua ʻōlelo maopopo ʻia ma GB / T19472.1-2004 ʻo ka manawa induction oxidation o ka mea maka o ka bellows he ≥20min (200 ℃).
He hopena nui ka modulus elastic o ka resin HDPE i ka ʻoʻoleʻa apo.Hiki i nā mea me ka modulus elastic kiʻekiʻe ke hoʻomaikaʻi i ke apo o nā huahana, akā mālama pū i nā mea maka a hoʻemi i nā kumukūʻai ma lalo o ka manaʻo o ka hōʻoia ʻana i ka paʻa o ke apo.No laila i ka hana ʻana i nā bellows pālua HDPE, pono ke loaʻa ka modulus kiʻekiʻe o ka mea maka i hoʻohana ʻia.Hōʻike ka nui o ka kahe kahe o ka hehee i ka nui o ke kaumaha molekala.Ma ka ʻōlelo maʻamau, ʻoi aku ka maikaʻi o ka mea me ka kahe kahe kiʻekiʻe i ka hana ʻana a me ka hoʻokumu ʻana, a hiki ke hoʻomaikaʻi i ka hana hana.Eia naʻe, ʻaʻole hiki ke nui loa, ʻoi aku ka nui o ka hopena i ka paʻakikī o ke apo.I ka manawa like, pono e loaʻa i ke kiʻekiʻe kiʻekiʻe a me ka hana hoʻoponopono maikaʻi a me ka hiki ke hoʻololi i nā mea hana.
Loaʻa i ka papa paipu HDPE ka mahele ākea a bimodal paha o ke kaumaha molekala.Loaʻa iā ia ke kūpaʻa creep ikaika a me ke kaulike maikaʻi o ka rigidity a me ka paʻakikī.He lōʻihi loa a he haʻahaʻa haʻahaʻa i ka wā e hana ʻia ai.ʻO nā paipu i hana ʻia me ka hoʻohana ʻana i kēia resin he ikaika maikaʻi, rigidity a me ka hopena hopena a me ka waiwai maikaʻi o SCG a me RCP.
Pono e mālama ʻia ka resin i loko o kahi waihona maloʻo a maloʻo a mamao i ke ahi a me ka lā pololei.ʻAʻole pono e hoʻahu ʻia ma ka lewa ākea.I ka wā o ka halihali ʻana, ʻaʻole pono e ʻike ʻia ka mea i ka lā ikaika a i ʻole ka ua a ʻaʻole pono e lawe pū ʻia me ke one, lepo, metala ʻōpala, lanahu a aniani paha.ʻAʻole loa e pāpā ʻia ka lawe ʻana me nā mea ʻawaʻawa, corrosive a me ke ahi.
Palapala noi
Hiki ke hoʻohana ʻia ka pae paipu HDPE i ka hana ʻana i nā paipu kaomi, e like me nā paipu wai kaomi, nā paipu wahie a me nā paipu ʻoihana ʻē aʻe.Hiki ke hoʻohana ʻia no ka hana ʻana i nā paipu paʻa ʻole e like me nā paipu ʻāwili paʻa pālua, nā paipu hollow-wall, nā paipu silicon-core, nā paipu irrigation mahiʻai a me nā paipu hui aluminika.Eia kekahi, ma o ka reactive extrusion (silane cross-linking), hiki ke hoʻohana ʻia no ka hana ʻana i nā paipu polyethylene crosslinked (PEX) no ka hoʻolako ʻana i ka wai anuanu a me ka wai wela.
