iimveliso

Uhlalutyo lweempawu ze-HDPE eziphindwe kabini zodonga,
I-resin ye-HDPE ye-bellows ephindwe kabini, indlela yokukhetha i-resin ye-HDPE yodonga oluphindwe kabini,

Iimfuno eziqhelekileyo kwiipropati ze-polyethylene (PE) zibandakanya izinga lokunyibilika (MFR), ubuninzi, i-flexure elastic modulus kunye ne-oxidation induction time (OIT), amandla empembelelo, njl. , i-volatiles kunye nezinye ixesha lokungeniswa kwe-oxidation limisela ixesha lomonakalo we-oxidation.Kwimibhobho efuna iminyaka engama-50 yokusetyenziswa, ukulawula ixesha lokungeniswa kwe-oxidation yezinto eziluhlaza ngundoqo wokuqinisekisa ubomi benkonzo ye-50 iminyaka.Kucaciswe ngokucacileyo kwi-GB/T19472.1-2004 ukuba ixesha lokungeniswa kwe-oxidation yezinto eziluhlaza ze-bellows kufuneka libe ≥20min(200℃).

I-elastic modulus ye-HDPE resin inempembelelo enkulu ekuqineni kweringi.Izinto eziphathekayo ezinomgangatho ophezulu we-elastic modulus zinokuphucula ukuqina kwendandatho yeemveliso, kodwa kunye nokugcina izinto eziluhlaza kunye nokunciphisa iindleko phantsi kwesiseko sokuqinisekisa ukuqina kwendandatho.Ke ekuvelisweni kwe-HDPE imibhobho ephindwe kabini eludongeni, imathiriyeli ekrwada esetyenzisiweyo kufuneka ibe nemodyuli ephezulu yokuqina.Ubungakanani besantya sokunyibilika bubonisa ubungakanani bobunzima bemolekyuli.Ngokubanzi, imathiriyeli enezinga eliphezulu lokunyibilika lokunyibilika kulungele ukusetyenzwa kunye nokwenza, kwaye inokuphucula ukusebenza kakuhle kwemveliso.Nangona kunjalo, ayinakuba nkulu kakhulu, enempembelelo enkulu ekuqineni kweringi.Kwangaxeshanye, kufuneka ibe noxinaniso oluphezulu kunye nokusebenza kakuhle kokusebenza kunye nokuguquguquka kwezixhobo.

Ibakala lombhobho we-HDPE linokusabalalisa okubanzi okanye kwe-bimodal ubunzima be-molecular.Inoxhathiso oluqinileyo lwe-creep kunye nokulinganisela okulungileyo kokuqina kunye nokuqina.Yomelele kakhulu kwaye ine-sag ephantsi xa isenziwa.Imibhobho eveliswa kusetyenziswa le resin inamandla amahle, ukuqina kunye nokumelana nempembelelo kunye nepropathi egqwesileyo ye-SCG kunye ne-RCP.

I-resin kufuneka igcinwe kwindawo yokugcina impahla, eyomileyo kwaye kude nomlilo kunye nelanga elithe ngqo.Akufunekanga ifunjwe kwindawo evulekileyo.Ngexesha lokuthutha, izinto eziphathekayo akufanele zibekwe kwilanga elinamandla okanye imvula kwaye akufanele zihanjiswe kunye nesanti, umhlaba, isinyithi esilahliweyo, amalahle okanye iglasi.Uthutho kunye nezinto eziyityhefu, ezidlekayo nezinokutsha akuvumelekanga ngokungqongqo.

Isicelo

Inqanaba lombhobho we-HDPE lingasetyenziselwa ukuveliswa kwemibhobho yoxinzelelo, njengemibhobho yamanzi ecinezelekileyo, imibhobho yegesi yepetroli kunye neminye imibhobho yoshishino.Isenokusetyenziswa ukwenza imibhobho engacinezelekiyo njengemibhobho etyatyiweyo enodonga oluphindwe kabini, imibhobho yodonga olunomngxuma, imibhobho yesilicon-core, imibhobho yokunkcenkceshela yezolimo kunye nemibhobho edityanisiweyo ye-aluminiyamplastics.Ukongeza, nge-extrusion esebenzayo (i-silane cross-linking), ingasetyenziselwa ukuvelisa imibhobho ye-polyethylene edibeneyo (PEX) yokubonelela ngamanzi abandayo nashushu.