Kuchengetedzeka uye kugara kwenguva refu zvinhu zviviri zvakakosha zvinotarisirwa nemubereki nemuchengeti pakusarudza zvinhu zvakakodzera zvemidziyo yekubindu yevana. Apa ndipo panopinda mapurasitiki eHDPE ane mavara maviri uye anopa mhinduro yakakwana.
HDPE, inozivikanwawo se polyethylene ine density yakakura, ipurasitiki inoshandiswa zvakanyanya inozivikanwa nekusimba kwayo uye kugara kwenguva refu. Haina simba rekukuvadzwa, makemikari uye mwaranzi yeUV, zvichiita kuti ive yakakodzera kushandiswa panze. Hunhu hwayo hwakareruka hunoitawo kuti ive nyore kubata uye kutakura, zvichiita kuti ive nyore.
Chimwe chezvinhu zvinonyanya kukosha zvepepa repurasitiki reHDPE rine mavara mavirindiyo sandwich ine mativi matatu. Iyi sandwich inoita kuti machira acho ave nesimba rakawanda uye akaomarara, zvichiita kuti akwanise kutsungirira kufamba kwakasimba uye mamiriro ekunze akaoma. Inoitawo kuti machira asanyanya kukotama kana kukotama, zvichiita kuti vana vagare vakachengeteka pavanenge vachitamba.
Mapaneru aya epurasitiki ane mavara maviri haasi ekushanda chete asiwo akanaka. Nemavara awo anopenya uye kupenya kwakatsetseka, anowedzera kutaridzika kwemidziyo yevana yekutamba mubindu. Anogona kuumbwa zviri nyore kuita maumbirwo akasiyana-siyana, zvichibvumira vagadziri kugadzira magadzirirwo anokwezva maziso evana.
Pamusoro pe,pepa repurasitiki reHDPE rine mavara maviriHazvina njodzi kune zvakatipoteredza uye zvinogara kwenguva refu. Hazvina zvinhu zvinokuvadza zvakaita semutobvu nemakemikari, zvichichengetedza vana ukuwo zvichibatsirawo kuti nharaunda ive neutano hwakanaka. Kugara kwenguva refu kwavo uye kusapfeka kwavo zvinorevawo kuti vanogara kwenguva yakareba, zvichideredza kudiwa kwekutsiva nguva nenguva uye kuderedza kugadzirwa kwemarara.
Panyaya yekugadzirisa, mapaneru aya epurasitiki ari nyore kuchenesa. Kupukuta nemvura ine sipo kwakakwana kuti arambe achitaridzika sematsva. Haatsvedzeriwo mavara nemifananidzo, izvo zvinobatsirawo munzvimbo dzeveruzhinji nenzvimbo dzekutamba.
Pakutenga mapurasitiki eHDPE ane mavara maviri emidziyo yevana yekubindu, zvakakosha kuve nechokwadi chekuti zvinhu zvacho zvinoenderana nemitemo yekuchengetedza. Tsvaga zvitupa zvakaita seASTM neEN71, zvinovimbisa kuti bhodhi rakaedzwa kuti rionekwe serinosimba remakanika, harina chepfu uye kuti harina moto.
Mukupedzisa,HDPEPepa repurasitiki rine mavara maviri isarudzo yakanaka kwazvo yemidziyo yekutamba yevana. Kugadzirwa kwavo kwemasangweji ane mativi matatu pamwe chete nesimba uye kugara kwenguva refu kweHDPE kunoita kuti vana vagare kwenguva refu uye vakachengeteka. Mapepa aya ane mavara, ari nyore kuchengetedza, uye asingakuvadzi nharaunda, achawedzera kutaridzika zvakanaka uye kushanda kwenzvimbo yekutambira yekunze. Tenga mabhodhi epurasitiki ane mavara maviri eHDPE izvozvi uye uunze ruzivo rwakachengeteka uye runonakidza rwekutamba kuvana.
Nguva yekutumira: Nyamavhuvhu-24-2023
