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Imbali yeIzongezo zeSilicone / iSilicone masterbatch / iSiloxane masterbatchkwaye isebenza njani kwiiikhompawundi zentambo kunye neentamboimboni?

Izongezo ze-silicone ezineI-polymer ye-silicone esebenzayo engama-50%isasazeke kwi-carrier efana ne-polyolefin okanye i-mineral, enohlobo lwe-granular okanye i-powder, esetyenziswa kakhulu njengezixhobo zokulungisa kwishishini leentambo kunye neentambo. Iimveliso ezaziwayo ezifanaI-SILOXANE MB50umsebenzi wochungechunge njenge-lubricant okanye i-rheological modifier kwishishini leentambo kunye neentambo kwaye yaqala ukwaziswa kwiDow Corning eMelika kwiminyaka engamashumi amabini eyadlulayo, emva koko yaqalaenye i-SILICONE MASTERBATCH MB50ivele kwimarike kunyeI-polymer ye-silicone esebenzayo eyi-70%Zisasazeke kwi-carrier efana ne-silica, zine-granular, emva koko iimveliso ezivela eChengdu Silike zavela kwimarike ukususela ngonyaka ka-2004, zinomthamo we-silicone ukusuka kwi-30-70% kunye ne-granular okanye i-powder form.

Iiparameter zobugcisa ze-masterbatch ye-silicone yorhwebo kufuneka zibandakanye oku kulandelayo:

(1) Xa usebenza njenge-lubricant okanye i-rheological modifier, umxholo usukela kwi-5 ukuya kwi-50%

(2) Isithwali kufuneka sihambelane ne-silicone kwaye kufuneka kuqwalaselwe i-substrate yefomyula ephambili yomsebenzisi, kunye nesalathiso segama le-polymer kunye ne-melt index yesithwali, ukuze abasebenzisi bakwazi ukubhekisa kuyo xa beyila ifomyula. Ukuba umgubo weminerali ongaphiliyo usetyenziswa njengesithwali, kufuneka kuboniswe igama lepowder. Ubumhlophe kunye nobunzima beepowders ezingaphiliyo zibalulekile kubathengi, kwaye iipowders ezimhlophe nezinkulu kufuneka zikhethwe kangangoko kunokwenzeka ukuze zenziwe.

Xa usebenza njengezinto zokuthambisa okanye izinto zokulungisa amathambo

Kwizinto zePolyethylene

Njengoko kusaziwa, isiganeko "sesikhumba soshaka" sidla ngokuvela xa kukhutshwa iingcingo kunye neentambo ze-polyethylene ezigqunywe okanye ezifakwe isheya, ingakumbi xa kukhutshwa i-polyethylene exineneyo ene-linear low-density (LLDPE) okanye i-polyethylene exineneyo ene-ultra-low (ULDPE okanye i-POE). Izinto ze-polyethylene ezidityanisiweyo ezine-extruded (nokuba yi-peroxide cross-linking okanye i-silane cross-linking) nazo ngamanye amaxesha zifumana isiganeko "sesikhumba soshaka", ngenxa yokungaqwalaselwa ngokwaneleyo kwenkqubo yokuthambisa kwifomyula yezinto. Inkqubo yangoku yamazwe ngamazwe kukongeza inani elincinci le-fluoropolymers kwifomyula, kodwa ixabiso liphezulu kwaye ukusetyenziswa kwayo kulinganiselwe.

Ngomlinganiselo omncinci wei-silicone enobunzima obukhulu kakhulu be-molecular(0.1-0.2%) ukuya kwi-polyethylene okanye i-polyethylene edityanisiweyo inokuthintela ngempumelelo ukuveliswa "kwesikhumba sikashaka". Kwangaxeshanye, ngesiphumo sayo sokuthambisa, inokunciphisa ngempumelelo i-torque ye-extrusion ukuthintela i-dragging motor ukuba ingami ngenxa yokuxinana kakhulu.

I-silicone esetyenziswa njengesithambisi, ngenxa yokuba ayifakwanga kakhulu, kufuneka isasazwe ngokulinganayo kwizinto ukuze isebenze ngexesha lokucubungula. Ngenxa yokungasebenzi kakuhle kweekhemikhali ze-silicone, ayizukusabela ngokweekhemikhali kunye nezinto ezikwifomyula. Kucetyiswa ukuba ifektri yezinto zekhebula ixube i-silicone ngokulinganayo kwinkqubo ye-granulation yeplastiki ukuze kube lula ukuyisebenzisa ifektri yekhebula.

NgokubaIikhompawundi zentambo ezithintela ilangatye ezingenalo i-halogen (HFFR) 

Ngenxa yokuba kukho inani elikhulu lezinto ezithintela ilangatye (umgubo weminerali) kwiikhompawundi zekhebula ze-HFFR, ezibangela i-viscosity ephezulu kunye nokuhamba kakuhle ngexesha lokucubungula; i-viscosity ephezulu yenza kube nzima ukuba imoto itsale ngexesha lokukhupha, kwaye ukutyibilika okubi kubangela inani elincinci leglue eliveliswa ngexesha lokukhupha. Ngoko ke, xa umzi-mveliso wekhebula ukhupha iintambo ezingenayo i-halogen, ukusebenza kakuhle yi-1/2-1/3 kuphela yentambo ye-polyvinyl chloride.

Ukuba i-silicone ikwifomula ethile, ayiphucukanga nje kuphela ekucutshungulweni njengokuhamba kwamanzi kodwa ikwafumana nokuthintela ilangatye okungcono kwizixhobo.