Intshayelelo: Njengomnye wePlastiks General General Jikelele, i-PP inokubonwa kuyo yonke indawo kubomi bemihla ngemihla. Inomnyulu ophezulu kune-pc eqhelekileyo. Nangona ingenayo imibala ephezulu ye-ABS, i-PP icocekile kwaye icocekile. Kushishino, izixhobo ze-PP zihlala zisetyenziswa kwizixhobo zokupakisha ezifanaIibhotile zeplastiki, Ibhotile yebhotile, Iibhotile zekrimu, njl. NdihlelwaIphakheji ye-RBkwaye kwabelwana ngayo ne-chain yonikezo:
Igama leekhemikhali: Polyproplene
Igama lesiNgesi: Polypropylene (ekubhekiswa kuyo njenge-PP)
I-PP yi-crystalline polymer. Phakathi kweplasitiki esetyenziswayo, i-PP yelona likhanyise kakhulu, kunye noxinaniso kuphela kwe-0.91G / cm3 (ngaphantsi kwamanzi). Phakathi kweenjongo ezikwinjongo jikelele, i-PP inolwazi oluhle kakhulu lobushushu. Ubushushu bayo obushushu obushushu buyi-80-100 ° C kwaye bunokubila kumanzi abilayo. I-PP inexinzelelo olufanelekileyo lokunganyangeki kunye nokugoba okuphezulu kobomi. Iqhelekile njenge "100% yeplastiki". Intsebenzo ebanzi ye-PP ilunge ngakumbi kunezo ziphatho ze-PE. Iimveliso ze-PP zinobunzima bokukhanya, ubunzima obulungileyo kunye nokungaxhathisi ngamachiza.
Ukungancedi kwe-PP: Ukuchaneka kwe-Dement, ukungavisisani kwemozulu, kulula ukuvelisa "ukonakaliswa kobhedu", kulula ukudilizwa, kube lula ukuyenza.
01
Iimpawu zokubumba
1) Isixhobo se-crystalline sine-hygroscoficity kwaye siqhele ukunyibilikisa iqhekeza, kwaye kulula ukubola unxibelelwano lwexesha elide ngentsimbi eshushu.
2) Ulwelo lulungile, kodwa uluhlu lwe-shrinkige kunye nexabiso le-shrinkage kwaye likhulu, kwaye imingxunya, ii-shrinkige, iidesions, kunye nokulahlekisa kulula ukuba kwenzeke.
3) Isantya sokupholisa ngokukhawuleza, inkqubo yokuthulula kunye nenkqubo yokupholisa kufuneka ichithe kancinci ubushushu, kwaye inike ingqalelo ekulawuleni ubushushu obubunjiweyo. Iqondo lobushushu lezinto ezibonakalayo kulula ukuba lijolise kubushushu obuphantsi kunye noxinzelelo oluphezulu. Xa ubushushu obubumba bungaphantsi kwe-50 degrees, inxalenye yeplastiki ayigudileyo, kwaye kulula ukuvelisa i-welding ye-welding, amanqaku ahambahambayo, i-degrees
4) Ubungakanani beplastiki yodonga kufuneka bube yiyunifomu ukuthintela ukunqongophala kweglue kunye neekona ezibukhali ukuthintela uxinzelelo loxinzelelo.
02
Iimpawu zenkqubo
I-PP ine-swimity elungileyo kubushushu bokunyibilika kunye nokusebenza okuhle. I-PP ineempawu ezimbini ezisebenzayo
Inye: I-viccosity ye-PP inyibilike kakhulu ngokunyuka kwenqanaba leShear (elingachaphazelekanga kangako kubushushu)
Okwesibini: Inqanaba lokuziqhelanisa nemolekyuli liphezulu kwaye iqondo le-shrinkage liphezulu.
Iqondo lokuqhubela phambili le-PP lijikeleze i-200 ukuya kwi-3500 ℃. Inozinzo oluhle (amaqondo obushushu ahleliweyo yi-310 ℃), kodwa kubushushu obuphezulu (270-300 ℃), inokucekisa ukuba ihlala emgqomeni ixesha elide. Ngenxa yokuba i-viscosity ye-PP inciphisa kakhulu ngokunyuka kwesantya seShear, ukwanda koxinzelelo lwenaliti kunye nesantya sokutsala kuya kwandisa ulwalamano kunye nokudakumba. Iqondo lobushushu elibunjiweyo kufuneka lilawulwe ngaphakathi kwe-30-50 ℃. I-PP inyibilike ingadlula kwi-gap emxinwa kakhulu kwaye ibonakale ngaphambili. Kwinkqubo yokunyibilika kwe-PP, kufuneka ifumane inani elikhulu lobushushu (ubushushu obuthile), kwaye imveliso ishushu emva kokuba ikhutshiwe. Izinto ze-PP azidingi ukuba zongami ngexesha lokusebenza, kwaye ireyithi ye-shrinkage kunye ne-crystallity ye-PP iphantsi kune-PE.
03
Amanqaku okuqaphela ukuqhubekeka kweplastiki
Ukulungiswa kweplastiki
I-PP ecocekileyo yi-ivory yendlovu emhlophe kwaye inokudayiswa ngemibala eyahlukeneyo. I-PP inokudada kuphela nge-starbatch yebala kwinaliti yoomatshini abaxhamlayo, kodwa ezinye iimodeli zinezinto ezizimeleyo eziqinisayo ezinokuqinisa isiphumo sokuxuba, kwaye zinokudada ngetoni.
Iimveliso ezisetyenzisiweyo ngaphandle zihlala zizaliswe zii-UV Stabilizers kunye nekhabhoni emnyama. Umlinganiselo wokusetyenziswa kwezinto ezisetyenzisiweyo kufuneka ungadluli kwi-15%, kungenjalo uya kubangela amandla Ngokubanzi, akukho nyango lukhethekileyo lufuneka ngaphambi kokuqhushumba kwe-PP.
Ukukhetha umatshini wokubumba
Akukho zimfuneko zikhethekileyo zokukhetha oomatshini bokubumba. Kuba i-PP inee-crystallies eziphezulu. Umatshini wokuvalelwa kwekhompyuter onoxinzelelo oluphezulu lwengcaciso ephezulu kunye nolawulo lwamanqanaba amaninzi luyafuneka. Amandla okuqhwaba ngoko ngokubanzi amiselwe ngama-3800t / M2, kunye nevolumu yenaliti yi-20% -85%.
Uyilo lweSango neSango
Iqondo lobuncwali le-50-90 ℃, kunye neqondo lobushushu eliphakamileyo lisetyenziselwa iimfuno eziphezulu zesayizi. Iqondo lobushushu elingaphakathi lingaphezulu kwe-5 ℃ iphantsi kweqondo lobushushu le-cavity, ububanzi be-GRORY yi-4-7mm, ubude be-Inaliti bungaphantsi kwe-1-1.5mm, kwaye ububanzi bube mncinci njenge-0.7mm.
Ubude besango lomda lifutshane kangangoko kunokwenzeka, malunga ne-0.7mm, ubunzulu besiqingatha sobukhulu bomhlaba, kwaye ububanzi buphindwe kabini ubude bokuqengqeleka emzimbeni.
Ibumba kufuneka ibe ne-vent elungileyo. Umngxunya we-vent yi-0.025mm-0.038mm nzulu kunye ne-1.5mm. Ukuthintela amanqaku e-shrinkge, sebenzisa i-nozzles enkulu nejikelezileyo kunye neembaleki ezijikelezayo, kwaye ubukhulu beembambo kufuneka bube mncinci (umzekelo, i-50-60% yobukhulu bomhlaba).
Ubungqingqwa beemveliso ezenziwe nge-humollymer PP akufuneki zidlule kwi-3mm, kungenjalo kuya kubakho iiblubhu (iimveliso zodonga ezinzima zinokusebenzisa kuphela i-copolymer PP).
Ubushushu bokunyibilika
Indawo yokunyibilika ye-PP yi-160-175 ° C, kunye neqondo lobushushu lingama-350 ° C, kodwa iqondo lokushishina lingenakudlula kwi-275 ° C ngexesha lokuqhubela phambili kwenaliti. Iqondo lobushushu kwicandelo lokunyibilika kukukhetha i-240 ° C.
Isantya senaliti
Ukwenzela ukunciphisa uxinzelelo lwangaphakathi kunye nengcaciso, inaliti ephezulu yesantya kufuneka ikhethwe, kodwa amanye amabakala e-PP kunye ne-PP kunye ne-PPs ayifanelekanga (iiblubhu kunye nemigca yomoya kwingubo yomntu). Ukuba umhlaba ophathwayo uvela kunye nemivimbo ekhanyayo kwaye emnyama eyahluke ngesango, inaliti yesantya esiphantsi kunye nobushushu obuphakamileyo kufuneka busetyenziswe.
Nyibilika
I-5Bar inyibilike isetyenziswe ngasemva, kwaye uxinzelelo lwangasemva lwezinto zeTorner lunokuhlengahlengiswa ngokufanelekileyo.
Inaliti kunye nengcinezelo ebambekayo
Sebenzisa uxinzelelo oluphezulu lwenaliti (i-1500-1800bar) kunye nokubamba uxinzelelo (malunga ne-80% yoxinzelelo lwenaliti). Tshintshela ekubambeni uxinzelelo malunga ne-95% ye-strooke epheleleyo, kwaye usebenzise ixesha elide lokufumana.
Ukuqhubekeka kwemveliso yeemveliso
Ukwenzela ukuthintela i-shrinkage kunye neskishform ebangelwe yikhilomitha, iimveliso ngokubanzi kufuneka zifakwe emanzini ashushu.
Shanghai rainbow mveliso co., ltdngumenzi,Iphakheji ye-shanghai yemvulaNikezela ukupakisha i-cosmetic enye.Ukuba iimveliso zethu, unakoQhagamshelana nathi,
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Ixesha lokuposa: I-Oct-04-2021