PP-R mapaipi uye zvigadziriso zvakavakirwa pane zvisina kujairika copolymerized polypropylene seyakanyanya mbishi zvinhu uye inogadzirwa zvinoenderana neGB / T18742. Polypropylene inogona kukamurwa kuita PP-H (homopolymer polypropylene), PP-B (block copolymer polypropylene), uye PP-R (random copolymer polypropylene). Kaviri madziro corrugated pombi muchina anoita basa rinokosha mukugadzira pombi. PP-R ndicho chinhu chesarudzo chepolypropylene mapaipi emvura inopisa uye inotonhora nekuda kwekuramba kwayo kwenguva refu kune hydrostatic pressure, yenguva refu inodzivirira kupisa oksijeni kuchembera uye kugadzirisa nekuumba.
Chii chinonzi PP-R chubhu?
PP-R pombi inonziwo matatu-mhando polypropylene pombi. Inotora isina kurongeka copolymer polypropylene kuti iburitswe mupombi, uye jekiseni-kuumbwa mupombi. Irwo rudzi rutsva rwepurasitiki pombi chigadzirwa chakagadzirwa uye chakashandiswa muEurope mukutanga kwema1990. PP-R yakaonekwa mukupera kwema80's, ichishandisa gasi chikamu copolymerization process kugadzira inenge 5% PE muPP molecular cheni zvisina tsarukano uye zvakafanana polymerized (random copolymerization) kuve chizvarwa chitsva chepombi zvinhu. Iyo ine yakanaka kukanganisa kupikisa uye kwenguva yakareba creep performance.
Ndeapi maitiro ePP-R mapaipi? PP-R pombi ine anotevera makuru maficha:
1.non-chepfu uye hutsanana. Iwo mamorekuru ePP-R anongori kabhoni uye hydrogen. Iko hakuna zvinhu zvinokuvadza uye zvine chepfu. Idzo dzakachena uye dzakavimbika. Haisi kungoshandiswa chete mumapombi anopisa uye anotonhora-mvura, asi anoshandiswawo muhurongwa hwemvura yakachena yekunwa.
2.Kuchengetedza kupisa uye kuchengetedza simba. Iyo yekupisa conductivity yePP-R pombi ndeye 0.21w / mk, inongori 1/200 yeiyo yesimbi pombi.
3.good heat resistance. Iyo vicat softening point yePP-R chubhu ndeye 131.5 ° C. Iyo yakanyanya tembiricha yekushanda inogona kusvika 95 ° C, iyo inogona kusangana nezvinodiwa zvezvirongwa zvemvura inopisa mukuvaka kugovera kwemvura uye kudhirowa kwemvura.
4.Upenyu hurefu hwebasa. Upenyu hwekushanda hwePP-R pombi hunogona kusvika makore anopfuura makumi mashanu pasi pekushisa kwekushanda kwe70 ℃ uye kushanda kumanikidziro (PN) 1.OMpa; Hupenyu hwesevhisi hweyakajairwa tembiricha (20 ℃) inogona kusvika makore anopfuura zana.
5.Easy kuisa uye yakavimbika kubatana. PP-R ine yakanaka welding performance. Mapaipi uye zvigadzirwa zvinogona kubatanidzwa nekupisa-kunyunguduka uye magetsi welding, iyo iri nyore kuisa uye yakavimbika mumajoini. Simba rezvikamu zvakabatana rakakura kudarika simba repombi pachayo.
6.Zvinhu zvinogona kushandiswa zvakare. PP-R tsvina inocheneswa uye yakapwanyika uye inodzokororwa pakugadzira pombi uye pombi. Huwandu hwezvinhu zvakadzokororwa hazvipfuuri 10% yehuwandu hwese, izvo zvisingakanganise kunaka kwechigadzirwa.
Ndeapi makuru ekushandisa ndima yePP-R mapaipi?
1.Chivakwa chinotonhora uye chinopisa mvura masisitimu, kusanganisira yepakati kudziyisa masisitimu;
2.Iyo yekudziya system muchivako, kusanganisira pasi, siding uye inopenya kupisa system;
3.Pure mvura yegadziriro yekunwa yakananga;
4.Central (centralized) air-conditioning system;
5.Industrial pombi masisitimu ekutakura kana kuburitsa makemikari media.
Nguva yekutumira: May-19-2021