Crosslinked polyethylene: kushanda uye unhu

Polyethylene ndiwo zvinhu rinoshandiswa mumaindasitiri siyana. Products pauri anoshandiswawo muupenyu. Common polyethylene anoramba simba raro kusvikira 130 inegumi. Zvisinei, kazhinji zvakakodzera kushandisa iyi, uye vari zvikuru mamiriro yakakwirira tembiricha uye kumanikidzwa, somuenzaniso muna kudziyisa ino uye mvura inopisa.

Izvi chikonzero chakaita kuti kutsvaka nzira kuwana mamwe vafuke zvinhu. Found ano kwaipa crosslinked polyethylene, iro rine guru samolecular kurema zvichienzaniswa kwakajairika zvinhu, uye kuwirirana unhu. Parinoti kunzwisisa neurongwa rinobatanidza mamorekuru yakafanira kuti paumbwe muchinjikwa Links chokuita mune-dimensional matatu afoot shirokoyacheistuyu.

Zvichienderana aishanda migumisiro kusiyanisa zvemakemikari uye mumuviri crosslinking. Mukupera nyaya, mutopota (muchinjikwa chokuita polyethylene inoshandiswa kusika zvinhu pamusoro Data) riri irradiated pamwe maekisirei aoma. Michina iyi ndiyo zvibereko chaizvo, uye mune miniti unogona kusimuka kusvika 80 metres zvokunyama.

A zvakaipira nzira ndechokuti crosslinked polyethylene ane gogonera pakukora nomutopota. In mukati anochinja yakadereresa chikamu remubatanidzwa mamorekuru, uye kunze, nekusiyana, chikuru. Saizvozvowo, siyana zvivako uye zvigadzirwa zvakawanda. Zvinoguma crosslinked polyethylene muboka C (PEX).

Kana kushandisa makemikari nzira nokuda yokutsiva rehydrogen maatomu ari mamorekuru anoshandiswa chaiyo fuma silane. Saizvozvowo, mumwe silane crosslinked polyethylene. In anogadzira zvinhu senyere napo chaiyo kugeza akazadzwa fuma. Izvi zvinobvumira kuti yunifomu crosslinking rikurumidze yomukati uye dzokunze hukawanika pakati nenyere masvingo zvakadzama. Michina iyi zvinoita kuti mugamuchire nenyere rurefu chikamu kubudiswa, uye mashoko akasarudzwa PEX-B.

Pane nzira processing ari polyethylene senitrogen radicals yaiwana zvinhu akanga asarudzwa PEX-D. Zvisinei, unyanzvi hwokugadzira zvinhu izvi hazvisi kushanda nokuda yakaderera kunyatsoshanda.

Uyewo kuita muchinjikwa-unobatanidza peroxides. Panyaya iyi, kurimwa muitiro unotora nokusanganisa pamusoro peroxide uye polyethylene, zvino yakaumbwa nehurumende uye pasi kumusoro tembiricha vakawana crosslinked polyethylene PEX-A boka.

Zvisinei, yaisvitsa migero zvinhu (mapoka B, C) rakashandiswa nokuda mvura uye kudziyisa, vane zvavasingakwanisi kuita akawanda izvo chokuita kusimba uye ductility zvigadzirwa.

The kubudirira vakawanda pombi dzakagadzirwa polyethylene boka A, vane yakakwirira kuneta simba, kutsemuka nemishonga, ndeiya yakaita pakusimba, mukana wokushandiswa, kutsungirira kuvhundutsa.

Heating PEX pombi anoshandiswa nevakawanda oga, vehurumende uye mumaindasitiri kuvakwa. Uchibatsirwa wavo kutakura Floor redhiyeta marongerwo uye kuumba uriri kudziyisa hurongwa.