HDPEuye PVC

Zvinhu zvepurasitiki zvinopfava uye zvinochinjika. Zvinogona kuumbwa, kudzvanywa kana kuumbwa muchimiro chakasiyana. Zvinonyanya kugadzirwa nemafuta negasi rechisikigo. Kune mhando mbiri dzepurasitiki; thermoplastics uye thermoset polymers.

Kunyange zvazvo mapolymer ethermoset achigona kunyungudutswa nekuumbwa kamwe chete uye anoramba akasimba kana atonhodzwa, mathermoplastic anogona kunyungudutswa nekuumbwa kakawanda uye nekudaro anogona kudzokororwazve.

Mapurasitiki eThermoplastic anoshandiswa kugadzira magaba, mabhodhoro, matangi emafuta, matafura nezvigaro zvinopetwa, mashedhi, mabhegi epurasitiki, matambo ekudzivirira tambo, mapaneru asingapindi mabara, matoyi edziva, midziyo yekushongedza, mbatya nemapombi.

Kune mhando dzakasiyana dzethermoplastics, uye dzinoiswa muchikamu cheamorphous kana semi-crystalline. Mbiri dzadzo hadzina morphousPVC(polyvinyl chloride) uye semi-crystalline HDPE (polyethylene ine density yakakura). Ose ari maviri mapolymer emhando yepamusoro.

Polyvinyl chloride (PVC) ipurasitiki yevinyl isingadhuri uye inogara kwenguva refu inoshandiswa mumapurojekiti ekuvaka. Ndiyo yechitatu pakushandiswa zvakanyanya mushure me polyethylene ne polypropylene uye inoshandiswa zvakanyanya mukugadzira mapaipi. Yakareruka uye yakasimba, zvichiita kuti ive yakakurumbira mukushandiswa kwepombi pamusoro pevhu nepasi pevhu. Yakasimba kwazvo uye yakakodzera kuviga zvakananga uye kuisa mugero pasina migero.

Kune rumwe rutivi, polyethylene ine density yakakura (HDPE) ipurasitiki yepolyethylene yakagadzirwa nepetroleum. Ine simba rakawanda, yakaoma, uye inogona kutsungirira kupisa kwakanyanya.
Mapaipi eHDPE akanakira kushandiswa mumapaipi epasi pevhu, sezvo akaonekwa kuti anonyorovesa uye anotora mafungu ekudengenyeka, nokudaro achideredza kukwira kwemvura kunogona kukanganisa sisitimu. Anewo simba rakanakisisa rekudzivirira majoini uye anodzivirira kukweshana uye kupisa.

Kunyange zvazvo zvinhu zvose zviri zviviri zvakasimba uye zvinogara kwenguva refu, zvinosiyana musimba nezvimwe zvinhu. Kune rumwe rutivi, zvakagadzirirwa kutsungirira kushushikana kwakasiyana. Kuti uwane chiyero chakafanana chepressure sepaipi yePVC, madziro epaipi yeHDPE anofanira kunge akakora ka2.5 kupfuura mapaipi ePVC.

Kunyange zvazvo zvese izvi zvichishandiswawo kugadzira mafireworks,HDPEyakawanikwa kuti yakakodzera uye yakachengeteka kushandisa nekuti inogona kupfura mafireworks kusvika pakakwirira zvakakodzera. Kana ikatadza kutanga mukati memudziyo ikatyoka, mudziyo weHDPE hauzotyoki nesimba rakafanana nemudziyo wePVC.

Muchidimbu:

1. Polyvinyl Chloride (PVC) ipolymer yevinyl isingadhuri uye inogara kwenguva refu inoshandiswa mumapurojekiti ekuvaka, nepo High Density Polyethylene (HDPE) ipurasitiki yepolyethylene yakagadzirwa nepetroleum.
2. Polyvinyl chloride ndiyo yechitatu inonyanya kushandiswa, uye polyethylene ndeimwe yepurasitiki dzinonyanya kushandiswa.
3. PVC haina chimiro chakafanana, nepo HDPE iri semi-crystalline.
4. Dzese dzakasimba uye dzinogara kwenguva refu, asi dzine simba rakasiyana uye mashandisirwo akasiyana. PVC inorema uye yakasimba, nepo HDPE yakaoma, inodzivirira kukwesha uye inodzivirira kupisa.
5. Mapaipi eHDPE akawanikwa achidzvinyirira uye achitora mafungu ekudengenyeka, nokudaro achideredza kukwira kwemvura kunogona kukanganisa sisitimu, nepo PVC isingakwanise.
6. HDPE inonyanya kukodzera kuiswa nemhepo ine simba shoma, nepo PVC inonyanya kukodzera kuiswa zvakananga uye isina mugero.