Ulwazi oluncedo ngeplastiki

adriana

Imizuzu ye2

El iplastiki Namhlanje sesinye sezona zixhobo zisetyenzisiweyo kumawaka ezicelo kubomi bemihla ngemihla nakwimizi-mveliso kangangeminyaka eliqela.

Iplastiki yenziwa malunga ne-1860 kodwa ukusetyenziswa kwayo kwaqala nge-1930s.

Iiplastiki zokwenziwa zineempawu ezenze ukuba le nto ithandwe: kuyabiza ukuvelisa, inesisindo esiphantsi, ayinamanzi, iyabhetyebhetye, iyagquma ngombane, iyamelana kwaye iyazivumelanisa nazo zonke iintlobo zokusetyenziswa.

Imveliso yeplastiki iyangcolisa kakhulu ngakumbi xa itshisiwe, ezinye iintlobo zeplastiki kulula ukuzisebenzisa kwakhona kodwa ezinye.

  • Ukusetyenziswa kweeplastiki kwihlabathi ngo-2010 kwakuziitoni ezingama-250 ezigidi kwaye kuyaqhubeka ukwanda.
  • Iiplastiki eziqhelekileyo zithatha phakathi kwe-100, 500 ukuya kuthi ga kwi-1000 iminyaka ukuthoba umgangatho kuxhomekeke kuhlobo lwezixhobo ezisetyenziselwa ukwenziwa kwazo.
  • Ukusetyenziswa kweplastiki kwesiko petroleum kunye neziphumo zokuveliswa kwayo kungcolisa kakhulu, ukongeza kuchithwa okuninzi amandla kwingcaciso yayo.
  • Inkunkuma yeplastiki imele inkunkuma efunyanwa elwandle nakwiilwandle kwihlabathi liphela ngama-60-80%.
  • Kuqikelelwa ukuba i-1 yezigidi zezigidi zeeplastiki zityiwa minyaka le emhlabeni, uninzi lwazo olujika lube yinkunkuma, kuba ingeyiyo inokuphawuleka.
  • Kukho iintlobo ngeentlobo zeplastiki ezisetyenziswa rhoqo kuzo zonke iintlobo zezinto. Ezinye zezona zisetyenziswa kakhulu yiPolystyrene, iPolypropylene, iPolyurethane, iPV, iPET, i-polyamide, phakathi kwabanye.
  • Iiplastikhi zesiko zinokuba noburhabaxa obahlukeneyo, ubunzima kunye nemeko yomzimba kuba inokuba ligwebu, izinto ezilukhuni, ithambile, njl.

Ukuququmbela, iplastiki yayijongwa njengezinto zangoku ezisombulula iingxaki ezahlukeneyo kwaye zinamawaka ezicelo. Kodwa ngokuhamba kwamashumi eminyaka oko kunike izibonelelo kodwa kwavelisa nongcoliseko olukhulu kwaye kwavelisa inkunkuma kuwo wonke umhlaba.

Okwangoku, iiplastikhi zesiko azisajongwa njengezona zinto zibalaseleyo ngenxa yeziphumo zazo kwimpilo yabantu kunye nokusingqongileyo.


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  1.   IYenifer Valentina Salas Duque sitsho
    yenzayo 10 iminyaka

    loluphi ulwazi oluhle

    Phendula u-Yenifer Valentina Salas Duque
  2.   UCarla paola sitsho
    yenzayo 10 iminyaka

    Olu lwazi lwaluncedo kakhulu kumsebenzi wam wasekhaya, ndafumana i-10

    Phendula u-carla paola
  3.   miriam inyanga sitsho
    yenzayo 10 iminyaka

    Sithathe ulwazi

    Phendula umiriam luna
  4.   miriam inyanga sitsho
    yenzayo 10 iminyaka

    Re coda ulwazi endinethemba lokufumana umsebenzi wasekhaya

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  5.   UFlorence sitsho
    yenzayo 10 iminyaka

    Ulwazi lulungile, ndine-10 kulo msebenzi

    Phendula u-florence
  6.   ilul2002 sitsho
    yenzayo 10 iminyaka

    Ndincede mna nomhlobo wam kakhulu ukwenza lo msebenzi

    Phendula ilul2002
  7.   camila sitsho
    yenzayo 10 iminyaka

    loluphi ulwazi olulungileyo

    Phendula kwi-camila
  8.   martina sitsho
    yenzayo 9 iminyaka

    Enkosi ngolwazi, ndiyathemba ukuba ndiza kufumana i-10 emsebenzini! Enkosi kwangaphambili kuba indincede kakhulu ..

    Phendula uMartina
  9.   kevin sitsho
    yenzayo 8 iminyaka

    Lowo yayingumsebenzi omdaka nge-ortho hdp ndiyayicaphukela iqokobhe likanyoko

    Phendula uKevin
  10.   valentina sitsho
    yenzayo 8 iminyaka

    Ndiyithandile le info

    Phendula valentina