Izindaba

Umlando weIzithako zeSilicone / Silicone masterbatch/ Siloxane masterbatchnokuthi isebenza kanjani ngaphakathiama-wire & cable compoundsimboni?

Izithasiselo ze-Silicone ngeI-50% esebenzayo ye-silicone polymerisatshalaliswe esiphathini njenge-polyolefin noma amaminerali, ngohlobo lwe-granular noma impushana, esetshenziswa kabanzi njengezinsiza zokucubungula embonini yezintambo nezintambo. Imikhiqizo eyaziwa kakhulu efanaSILOXANE MB50uchungechunge lusebenza njenge-lubricant noma i-rheological modifier embonini yezintambo nezintambo futhi yethulwa okokuqala ivela e-Dow Corning e-United States eminyakeni engamashumi amabili edlule, kwase kubaenye i-SILICONE MASTERBATCH MB50uvele emakethe ngeI-70% eyenziwe nge-silicone polymeresatshalaliswe esiphathini esifana ne-silica, enohlobo lwe-granular futhi, kwase kuvela imikhiqizo evela ku-Chengdu Silike emakethe kusukela ngonyaka ka-2004, enokuqukethwe kwe-silicone kusuka ku-30-70% kanye nefomu le-granular noma impushana.

Imingcele yezobuchwepheshe ye-silicone masterbatch yokuhweba kufanele ifake okuqukethwe okulandelayo:

(1) Uma usebenza njengesiguquli se-lubricant noma i-rheological, okuqukethwe kusuka ku-5 kuya ku-50%

(2) Inkampani yenethiwekhi kufanele ihambisane ne-silicone futhi ingxenye encane yefomula yomsebenzisi kufanele icatshangelwe, nenkomba yegama le-polymer kanye nenkomba encibilikayo yenkampani yenethiwekhi, ukuze abasebenzisi bakwazi ukubhekisela kuyo lapho beklama ifomula. Uma i-inorganic mineral powder isetshenziswa njengesithwali, igama lempushana kufanele likhonjiswe. Ubumhlophe nokucoleka kwezimpushana ezingaphili zibalulekile kumakhasimende, futhi izimpushana ezinosayizi omhlophe noma omncane kufanele zikhethwe ngangokunokwenzeka ukuze zikhiqize.

Lapho usebenza njengama-lubricant noma ama-rheological modifiers

Okokusebenza kwe-polyethylene

Njengoba kwaziwa kahle, ukwenzeka “kwesikhumba sikashaka” kuvame ukwenzeka lapho kukhishwa izintambo nezintambo ze-polyethylene ezivalekile noma ezifakwe sheathed, ikakhulukazi lapho kukhishwa i-linear low-density polyethylene (LLDPE) noma i-ultra-low density polyethylene (ULDPE noma i-POE). Izinto ze-polyethylene ezinwetshiwe ezixhumene kakhulu (kungakhathaliseki ukuthi i-peroxide cross-linking noma i-silane cross-linking) nazo ngezikhathi ezithile ziba nokwenzeka "isikhumba sikashaka", ngenxa yokungacatshangwa ngokwanele kwesistimu yokuthambisa kufomula yezinto ezibonakalayo. Umkhuba wamanje wamazwe ngamazwe uwukwengeza amanani omkhondo we-fluoropolymer efomini, kodwa izindleko ziphezulu futhi isicelo sinomkhawulo.

Ngenani elincaneI-silicone yesisindo se-molecular ephezulu kakhulu(0.1-0.2%) ku-polyethylene noma i-polyethylene exhunywe ngokuphambana ingavimbela ngokuphumelelayo ukukhiqizwa "kwesikhumba sikashaka". Ngasikhathi sinye, ngomphumela wayo wokugcoba, inganciphisa ngempumelelo i-torque ye-extrusion ukuvimbela i-motor edonsayo ukuthi ime ngenxa yokugcwala ngokweqile.

I-silicone esetshenziswa njengesithambiso, ngenxa yokwengeza kwayo okuncane, kufanele isatshalaliswe ngokulinganayo kumpahla ukuze isebenze ngesikhathi sokucutshungulwa. Ngenxa ye-inertness yamakhemikhali ye-silicone, ngeke isabele ngamakhemikhali nezingxenye zefomula. Kutuswa ukuthi ifekthri yezinto zekhebula ixube ngokulinganayo abicah enqubweni ye-plasticizing granulation ukuze kube lula ukusetshenziswa kwefekthri yekhebula.

NgobaIzinhlanganisela zekhebula le-Halogen free flame retardent(HFFR). 

Ngenxa yokuba khona kwenani elikhulu lama-flame retardants (i-mineral powder) kumakhompiyutha wekhebula le-HFFR, okuholela ekubeni ne-viscosity ephezulu kanye nokugeleza okubi ngesikhathi sokucubungula; I-viscosity ephezulu yenza kube nzima ukuthi i-motor idonse ngesikhathi sokukhishwa, futhi ukungahambi kahle kwamanzi kubangela inani elincane leglue elikhiqizwa ngesikhathi sokukhishwa. Ngakho-ke, lapho imboni yekhebula ikhipha izintambo ezingenazo i-halogen, ukusebenza kahle kungu-1/2-1/3 kuphela wentambo ye-polyvinyl chloride.

Ngenani elithile le-silicone kufomula, akusebenzi nje kuphela ukucubungula njengokugeleza okuthuthukisiwe kodwa futhi thola ukubambezeleka okungcono kwelangabi kokokusebenza.