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Indlela yokusombulula iintlungu zokucutshungulwa kwezixhobo zekhebula ezingenayo i-halogen ezingenamsi?

I-LSZH imele i-halogens yomsi ophantsi, i-halogen engenamsi omncinci, olu hlobo lwentambo kunye nocingo lukhupha umsi ophantsi kakhulu kwaye alukhuphi iihalojeni ezinetyhefu xa zisesichengeni sobushushu. Nangona kunjalo, ukuze kuphunyezwe ezi zinto zimbini zibalulekileyo, ekuveliseni izixhobo zentambo ze-halogen ezingenayo umsi ophantsi, i-Low-smoke zero halogens (LSZH) ilayishwe kakhulu, ekhokelela ngokuthe ngqo kwi-mechanical & processing properties.

Ubunzima bokulungiswa kwezinto ezingenayo i-halogen ephantsi:

1. Ifomula eqhelekileyo, i-LLDPE / EVA / ATH umxholo ophezulu ogcwele i-LSZH i-polyolefin cable compounds iqulethe ukuya kwi-55-70% ATH / MDH, Njengenani elikhulu le-aluminium hydroxide, i-magnesium hydroxide, kunye nezinye i-flame retardants ukujoyina ukusetyenziswa kwenkqubo. ukushukuma kumbi, ukuveliswa kobushushu obukhukhulayo ngexesha lokulungiswa kukhokelela ekonyukeni kobushushu obubangela ukuthotywa kwe-aluminiyam kunye ne-magnesium hydroxide.

2. Ukusebenza okuphantsi kwe-extrusion, nokuba unyusa isantya somthamo we-extrusion uhlala ufana.

3. Ukungahambelani kakuhle kwe-inorganic flame retardants kunye ne-fillers kunye ne-polyolefins, ukusabalalisa okungahambi kakuhle ngexesha lokucubungula, okukhokelela ekunciphiseni iimpawu zomatshini.

4. Umphezulu orhabaxa kunye nokungabikho kweglosi ngexesha le-extrusion ngenxa yokusasazwa okungalinganiyo kwe-inorganic flame retardants kwinkqubo.

5.I-polarity yesakhiwo se-flame retardants kunye ne-fillers ibangela ukuba inyibilike ibambelele kwintloko yokubumba, ukulibazisa ukukhutshwa kwezinto ezivela kwi-mold, okanye ii-molecule ezincinci ekubunjweni ziphuma ngaphandle, okubangela ukwakhiwa kwezinto kwi-mold open; ngaloo ndlela ichaphazela umgangatho wentambo.

Ngokusekwe kule miba ingentla, i-SILIKE iphuhlise uthotho lwei-silicone yokongezaiimveliso ezilungiselelwe ngokukodwa ukujongana neendawo zentlungu zokucutshungulwa kunye nomgangatho womphezulu wezixhobo zentambo ze-halogen ezingenamsi ophantsi, umsi ophantsi we-halogens we-halogens ucingo & iikhompawundi zentambo, okanye ezinye iikhompawundi zePolyolefin ezizaliswe ziiminerali kakhulu zocingo kunye nosetyenziso lwentambo, ezibonelela ngezisombululo ezininzi ezisebenzayo. kule mingeni.

Umzekelo:I-Silicone Masterbatch (iSiloxane Masterbatch) LYSI-401i-pelletized formulation kunye ne-50% ye-ultra-high molecular weight siloxane polymer ehlakazwe kwi-polyethylene ephantsi (LDPE). Isetyenziswa ngokubanzi njengesongezo sokusebenza esisebenzayo kwiinkqubo ze-resin ezihambelanayo ne-PE ukuphucula iipropathi zokusetyenzwa kunye nokuguqula umgangatho womphezulu.

Ukongeza i-0.5-2% yeSILIKE silicone masterbatch LYSI-401kwinkqubo yokuzalisa idangatye eliphezulu lomsi ophantsi we-halogen yasimahla kunye neekhompawundi zentambo okanye umsi ophantsi we-zero halogens (LSZH) intambo yentambo yenza ukuba iintambo kunye nabenzi bentambo bakhulise imveliso, banokuphucula ukusetyenzwa kwamanzi, ukunciphisa i-torque, isantya esikhawulezayo somgca we-extrusion ngaphandle kweyiphi na. Ukufuduka, ukuphucula umgangatho womphezulu wocingo kunye nentambo ngokunjalo, (I-coefficient esezantsi yokukhuhlana, Ukuphuculwa komkrwelo kunye nokumelana nokunxiba, ukutyibilika komphezulu ongcono, kunye nokuziva kwesandla ...) ngaphandle kokuhlawula iprimiyamu yezongezo zokusebenza ezingafunekiyo.

Ngesiqhelo, ngokwesiqheloi-silicone masterbatch, i-siloxane ayikho-polar, kwaye ininzi ye-carbon chain polymer solubility parameters of the difference zikhulu kakhulu, ukongezwa kwenani elikhulu lamatyala kunokukhokelela ekuqhutyweni kwe-screw slippage, i-lubrication ngokugqithiseleyo, umphezulu wemveliso ye-delamination, ezichaphazela umphezulu weemveliso zeempawu zokubambisana kweemveliso kwi-substrate zihlakazwe ngokungalingani kunye nokunye.

Ngelixa,SILIKE's izongezo ze-silicone ezinobunzima obuphezulu bemolekyuliziguqulwa ngamaqela akhethekileyo, anokukhethwa kwaye afaniswe ngokweemfuno ezahlukeneyo zezongezo ze-silicone kwii-substrates ezahlukeneyo. Olu luhlu lweemveliso lunokudlala indima yokubambelela kwi-substrate, ngaloo ndlela ihambelana ngcono ne-substrate, ukusasazwa lula, ukudibanisa okunamandla, kwaye ngaloo ndlela inike i-substrate ukusebenza okugqwesileyo ngakumbi. Xa isetyenziswa kwiinkqubo ze-LZSH kunye ne-HFFR, inokunqanda ngokufanelekileyo ukutyibilika kwe-screw kwaye inokudlala indima ebalulekileyo ekuphuculeni ukuqokelelana kwezinto kumbumba womlomo.