Imibhobho ye-PP-R kunye nezixhobo zisekelwe kwi-polypropylene engahleliwe njengeyona nto iphambili kwaye iveliswa ngokuhambelana ne-GB / T18742.I-Polypropylene inokwahlulwa ibe yi-PP-H (i-homopolymer polypropylene), i-PP-B (i-block copolymer polypropylene), kunye ne-PP-R (i-copolymer polypropylene engahleliwe).Udonga oluphindwe kabini umatshini wemibhobho yamacangci udlala indima ebalulekileyo kwimveliso yombhobho.I-PP-R yimathiriyeli yokuzikhethela kwimibhobho ye-polypropylene yamanzi ashushu kunye abandayo ngenxa yokuchasana kwayo ixesha elide kuxinzelelo lwe-hydrostatic, ukuguga kwexesha elide lokumelana nokushisa kwe-oksijeni kunye nokucubungula kunye nokubumba.
Yintoni ityhubhu yePP-R?
Umbhobho we-PP-R ubizwa ngokuba ngumbhobho we-polypropylene weentlobo ezintathu.Ithatha i-polymer polypropylene engahleliweyo ukuba ikhutshwe ibe ngumbhobho, kunye nenaliti-ebunjwe kumbhobho.Luhlobo olutsha lwemveliso yombhobho weplastiki ophuhliswe kwaye wasetyenziswa eYurophu ekuqaleni kweminyaka yoo-1990.I-PP-R yabonakala ekupheleni kwe-80′s, isebenzisa inkqubo ye-copolymerization yesigaba segesi ukwenza malunga ne-5% ye-PE kwi-PP ye-molecular chain ngokulandelelana kunye ne-polymerized (copolymerization engaqhelekanga) ukuba ibe sisizukulwana esitsha semathiriyeli yombhobho.Inokumelana neempembelelo ezintle kunye nokusebenza kwexesha elide lokunyuka.
Ziziphi iimpawu zePP-R imibhobho?Umbhobho wePP-R unezi mpawu zilandelayo:
1.non-toxic kunye nococeko.Iimolekyuli zezinto eziluhlaza ze-PP-R ziyi-carbon kunye ne-hydrogen kuphela.Akukho zinto ziyingozi kunye netyhefu.Zicocekile kwaye zithembekile.Ayisetyenziswanga kuphela kwimibhobho yamanzi ashushu nabandayo, kodwa ikwasetyenziswa kwiinkqubo zamanzi okusela acocekileyo.
2.Ukugcinwa kobushushu kunye nokonga amandla.I-thermal conductivity yepayipi ye-PP-R yi-0.21w / mk, eyi-1/200 kuphela yepayipi yensimbi.
3.ukumelana nobushushu obuhle.I-vicat softening point ye-PP-R ityhubhu yi-131.5 ° C. Ubushushu obuphezulu bokusebenza bunokufikelela kwi-95 ° C, enokuthi ihlangabezane neemfuno zeenkqubo zamanzi ashushu ekwakheni ukunikezelwa kwamanzi kunye neenkcukacha zokuhambisa amanzi.
4.Ubomi benkonzo ende.Ubomi bokusebenza kombhobho we-PP-R bunokufikelela kwiminyaka engaphezu kwama-50 phantsi kobushushu obusebenzayo be-70 ℃ kunye noxinzelelo lokusebenza (PN) 1.OMpa;ubomi benkonzo yobushushu obuqhelekileyo (20 ℃) bunokufikelela kwiminyaka engaphezu kwe-100.
Ukufakwa kwe-5.Easy kunye noqhagamshelwano oluthembekileyo.I-PP-R inokusebenza kakuhle kwe-welding.Imibhobho kunye nezixhobo ziyakwazi ukudibaniswa ne-hot-melt kunye ne-welding yombane, ekulula ukuyifaka kunye nokuthembeka kumalungu.Amandla amacandelo adibeneyo makhulu kunamandla ombhobho ngokwawo.
6.Izinto ezisetyenziswayo zinokuphinda zisetyenziswe.Inkunkuma ye-PP-R iyacocwa kwaye icunyuzwe kwaye isetyenziswe ngokutsha ukwenzela ukuveliswa kombhobho kunye nemibhobho.Ubungakanani bezinto ezisetyenzisiweyo azidluli kwi-10% yexabiso elipheleleyo, elingachaphazeli umgangatho wemveliso.
Yiyiphi intsimi yesicelo esiphambili semibhobho ye-PP-R?
1.Iinkqubo zamanzi abandayo nashushu zesakhiwo, kuquka neenkqubo zokufudumeza ezisembindini;
I-2.Inkqubo yokufudumeza kwisakhiwo, kubandakanywa umgangatho, i-siding kunye nenkqubo yokufudumala yokufudumala;
3.Inkqubo yonikezelo lwamanzi asulungekileyo yokusela ngokuthe ngqo;
4.Umbindi (ophakathi) inkqubo yokupholisa umoya;
5.Iinkqubo zemibhobho yoshishino yokuthutha okanye yokukhupha imidiya yeekhemikhali.
Ixesha lokuposa: May-19-2021