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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.