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Ukuqaliswa kweMveliso yePolypropylene (PP-R) Imibhobho yamanzi ashushu nabandayo

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 wombhobho onamacangci 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 kwaye zinetyhefu. 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.
Ufakelo lwe-5.Easy kunye noqhagamshelwano oluthembekileyo. I-PP-R inokusebenza kakuhle kwe-welding. Imibhobho kunye nezixhobo ziyakwazi ukudibaniswa nge-hot-melt kunye ne-welding yombane, ekulula ukuyifaka kunye nokuthembeka kumalungu. Amandla amacandelo adibeneyo makhulu kunamandla ombhobho ngokwawo.
6.Izinto eziphathekayo 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 ecocekileyo yokusela ngokuthe ngqo;
4.Umbindi (ophakathi) inkqubo yokupholisa umoya;
5.Iinkqubo zemibhobho yoshishino yokuthutha okanye yokukhupha imidiya yeekhemikhali.


Ixesha lokuposa: May-19-2021