HDPEuye PVC

Plastic zvinhu zviri elastic uye kugadzirwa. Zvinogona kuumbwa, kudzvanywa kana kukandwa mumhando dzakasiyana. Izvo zvinonyanya kugadzirwa nemafuta uye gasi rechisikigo. Kune marudzi maviri emapurasitiki; thermoplastics uye thermoset polymers.

Nepo thermoset polymers inogona kungonyungudutswa uye kuumbwa kamwe chete uye kuramba yakasimba kana yatonhodzwa, thermoplastics inogona kunyungudutswa nekuumbwa zvadzokororwa uye nekudaro inogona kushandiswazve.

Thermoplastics inoshandiswa kugadzira midziyo, mabhodhoro, matangi emafuta, kupeta matafura nemacheya, mashedhi, mabhegi epurasitiki, tambo insulators, bulletproof panel, matoyi edziva, upholstery, zvipfeko uye pombi dzemvura.

Kune akati wandei marudzi e thermoplastics, uye anoiswa seamorphous kana semi-crystalline. Vaviri vavo vane amorphousPVC(polyvinyl chloride) uye semi-crystalline HDPE (yakakwirira density polyethylene). Ose ari maviri commodity polymers.

Polyvinyl chloride (PVC) isingadhuri uye yakasimba vinyl polymer inoshandiswa mumapurojekiti ekuvaka. Ndiyo yechitatu yepurasitiki inoshandiswa zvakanyanya mushure me polyethylene uye polypropylene uye inoshandiswa zvakanyanya mukugadzirwa kwepombi. Iyo yakareruka uye yakasimba, ichiita kuti ive yakakurumbira mupamusoro-pasi uye pasi pevhu pombi dzekushandisa. Iyo yakasimba kwazvo uye inokodzera kuvigwa zvakananga uye isina trenchless yekuisa.

Kune rimwe divi, high density polyethylene (HDPE) ndeye polyethylene thermoplastic yakagadzirwa nepetroleum. Iine simba rakakwirira, yakaoma, uye inogona kumira kutonhora kwakanyanya.
Mapombi eHDPE ari nyore kushandiswa mumapombi epasi pevhu, sezvo akawanikwa achinyorovesa uye anonwisa mafungu ekuvhundutsa, nekudaro achidzikisa kuvhiya kunogona kukanganisa sisitimu. Ivo zvakare vane akanakisa majoini compression kuramba uye anowedzera abrasion uye kupisa kusagadzikana.

Kunyange zvazvo zvinhu zvose zviri zviviri zvakasimba uye zvakasimba, zvinosiyana pakusimba uye zvimwe zvinhu. Kune rumwe rutivi, dzakagadzirirwa kuti dzimire kushushikana kwakasiyana. Kuti uwane chiyero chakafanana chekumanikidza sePVC pombi, HDPE pombi madziro anofanira kunge akakora 2.5 nguva kupfuura PVC pombi.

Nepo zvese zviri zviviri zvishandiswawo kugadzira firework,HDPEyakawanikwa ichinyanya kukodzera uye yakachengeteka kushandisa nekuti inogona kupisa mafirework kusvika paurefu hwakakodzera. Kana ikatadza kutanga mukati memudziyo wotyoka, gaba reHDPE hariputsike nesimba rakawanda semudziyo wePVC.

Kupfupikisa:

1. Polyvinyl Chloride (PVC) isingadhuri uye yakasimba vinyl polymer inoshandiswa muzvirongwa zvekuvaka, nepo High Density Polyethylene (HDPE) inonzi polyethylene thermoplastic yakagadzirwa nepetroleum.
2. Polyvinyl chloride ndiyo yechitatu yepurasitiki inoshandiswa zvakanyanya, uye polyethylene imwe yemapurasitiki anoshandiswa zvakanyanya.
3. PVC ine amorphous, nepo HDPE iri semi-crystalline.
4. Zvose zvakasimba uye zvakasimba, asi zvine simba rakasiyana uye kushandiswa kwakasiyana. PVC inorema uye yakasimba, ukuwo HDPE yakaoma, inoshingirira kuputika uye inodzivirira kupisa.
5. Mapaipi eHDPE akawanikwa kuti anodzvinyirira uye anotora masaisai ekuvhundutsa, nokudaro achideredza kuvhiyiwa kunogona kukanganisa hurongwa, nepo PVC isingagoni.
6. HDPE inonyanya kukodzera kuiswa kwepasi, apo PVC inonyanya kukodzera kuvigwa kwakananga uye kuisa trenchless.