Nhasi tichaunza zvinhu zvitatu zvakakosha zveepe net, zvinosanganisira LDPE HDPE PP.

一,Musiyano mukuru pakati peLDPE (yakaderera density polyethylene) uye HDPE (yakakwirira density polyethylene) iri mukuwanda kwavo, zvimiro zvemuviri, mashandisiro, nezvimwe.

1. Density uye chitarisiko:

Kuwanda kweLDPE kunowanzova pakati pe0.910-0.940g/cm³, ukuwo kuwanda kweHDPE kuri pakati pe0.940-0.976g/cm³.

LDPE ine mukaka chena chitarisiko uye inopenya kune imwe nhanho muzvikamu zvitete, nepo HDPE kazhinji isina kujeka uye ine mukaka chena uye inopenya.

2. Zvimiro zvemuviri:

LDPE yakapfava, ine kusimba kwakanaka, kujeka kwakanaka, uye kunzwa kunotsvedza. Iine hurombo husina kugadzikana panguva yekuumbwa uye kugadzirisa, uye yakaoma kubatanidza.

HDPE ine simba rakakura, kusimba kwakanaka, uye kusimba kwakasimba, padyo nePP (polypropylene), yakasimba kupfuura PP, uye ine yakanaka tembiricha kuramba.

3.Shandisa:

LDPE ine yakaderera melt viscosity, yakanaka fluidity, uye iri nyore kugadzirisa. Inokodzera kugadzirwa kwepombi dzemvura yekunwa, nezvimwe.

HDPE inokodzera kugadzira giredhi rekudhirowa, jekiseni rekuumba giredhi, goro giredhi uye yakavhuvhuta firimu giredhi zvigadzirwa, senge mambure ekuredzesa, mabhodhoro ezvinwiwa nemabhegi ekurongedza.

4. Chemical resistance:

Ose ari maviri anopikisa zvakanyanya kumakemikari mazhinji emumba uye emaindasitiri, asi HDPE inoshingirira kune acid, alkali corrosion uye organic solvents.

5. Kuramba kupisa uye kuramba kuchembera:

LDPE ine kushomeka kwekudzivirira kupisa, kuramba kuchembera uye kusagadzikana kwezvakatipoteredza kuputsa kuramba seHDPE, uye inowanzochembera, kuora uye kushanduka.

HDPE ine yakanaka yakakwirira tembiricha kuramba asi yakaderera yakaderera tembiricha kuramba. Izvo zvakashata ndezvekuti kuramba kwayo kuchembera uye kushushikana kwemamiriro ekunze kuputsa kuramba hakuna kunaka seLDPE.

二,Misiyano mikuru pakati pePP uye PE zvinhu ndeiyi inotevera:

1. Zvisungo: Chikamu chikuru chePP polypropylene, nepo chikamu chikuru chePE polyethylene.

2. Hunhu: PP inowanzoita translucent colorless solid, inonhuhwirira uye isina chepfu, ine kupisa kwakanyanya kupikisa, kujeka, mechanical simba uye mamwe maitiro; PE chinhu chinozivikanwa chekubata chikafu munyika, chisina chepfu, chisingarapike, Haina hwema, inonzwa kunge wakisi, inoenderana nehutsanana kurongedza chikafu, ine yakanaka ductility, haina kukuvara nyore, uye ine yakanakisa kupisa kupisa.

3. Kuwanda kwekushandisa: PP inogona kushandiswa kugadzira greenhouse air awnings, mulch mafirimu, tsika mabhodhoro, nezvimwewo, uye inogonawo kushandiswa kugadzira chikafu chekutengesa mabhokisi, mabhegi ezvikafu, nezvimwe. PE inogona kugadziriswa nekuvhuvhuta kuumbwa, extrusion. , jekiseni rekugadzira uye dzimwe nzira, uye rinoshandiswa zvakanyanya mukugadzira mafirimu, maburi zvigadzirwa, nezvimwe.