Kutheni le nto i-PTFE iFabric yobushushu obuphezulu obuNganyangekiyo kuMlilo oVulekileyo? Yintoni iMicroscopic yeNdlela yokuRetardant Flame-Retardant?

I-Jiangsu Aokai New Materials, umenzi okhokelayo we-PTFE amalaphu aphezulu obushushu, uyachaza:

Ilaphu le-PTFE elinobushushu obuphezulu liyamelana nedangatye kumlilo ovulekileyo, ikakhulu ngenxa yesakhiwo semolekyuli kunye ne-thermal decomposition mechanism ye-core material yayo - i-polytetrafluoroethylene (PTFE). Ukubuyiswa kwamadangatya akuxhomekekanga kwizixhobo zokuvala amadangatye okongeziweyo njengezinto eziqhelekileyo, kodwa kuphuma kubume bekhemikhali obungokwemvelo kunye nokuziphatha okukodwa kokubola.

Oku kunokuqondwa kumanqanaba amathathu:

1. IMolekyuli eyomeleleyo 'Isikrweqe': Amandla eBond ePhezulu kunye noMaleko oKhuselayo

·  Iibhondi zekhabhoni-fluorine (C–F) ezomeleleyo : Iimolekyuli ze-PTFE ziquka ikhonkco letsheyina lekhabhoni engqongwe ngokuqinileyo ziiathom zefluorine. Ibhondi ye-C–F yenye yezona qhina zinamandla zaziwayo zekhemikhali, ezinamandla ebhondi amalunga ne-485 kJ/mol. Amandla aphezulu kakhulu (ubushushu) afunekayo ukuze aphule, enze umgca wokuqala wokukhusela.

·  Ukukhusela iiathom zefluorine : Iiathom zefluorine ezinkulu, ezichajiwe kakubi zipakishwe ngokuxineneyo, zisebenza njengesikrweqe esingqindilili esivale ngokupheleleyo ikhonkco lekhabhoni elingaphakathi. Lo mqobo uthintela iikhemikhali ezininzi (kubandakanywa neoksijini) ekufikeleleni kwi-carbon chain kwaye inqanda ngamandla ukuphendula kwe-oxidation efunekayo ekutshiseni.

2. I-Non-Combustible Decomposition: i-Depolymerization endaweni yokutshisa

·  Itsheyini scission phambi kwe oxidation : Phantsi kwamaqondo obushushu aphezulu, iibhondi zekhabhoni-carbon (C–C) zibuthathaka ngokwentelekiso ngaphakathi kwe PTFE ikhefu phambi kweebhondi ze-C–F. Imixokelelwane yeemolekyuli iqala ukubola ngaphambi kokuba ioksijini ithathe inxaxheba ekuphenduleni.

·  Imveliso engundoqo yi-monomer : Ekuqhekekeni, i-PTFE ikakhulu i- depolymerization , ikhupha ii-tetrafluoroethylene (C₂F₄) iimonomers kwiincam zekhonkco. Izinto eziphathekayo ziyaba ngumphunga kunokuba zibe nokutsha okunobundlobongela okukhupha ubushushu obukhulu kunye neegesi ezinokutsha.

·  I-Gas-phase barrier effect : I-C₂F₄ igesi esuka kwi-depolymerization ixinene kunomoya kwaye ihlala kufuphi nomphezulu, yenza i-gaseous layer yethutyana eyenza i-oksijeni igxininise kwaye icinezele ngakumbi ukutsha.

3. Indima yeNkxaso yeGlass Fiber Substrate

Ilaphu le-PTFE lobushushu obuphezulu liyinto edityanisiweyo eyenziwe ngokutyabeka i-PTFE kwilaphu leglasi yefiber. Ifayibha yeglasi ngokwayo yinto engatshiyo ye-inorganic. Njenge-skeleton yesakhiwo, iqinisekisa ukuba nangona umgangatho we-PTFE ugqitywe ngokupheleleyo phantsi kobushushu obugqithiseleyo, izinto eziphathekayo azinyibiliki okanye zithontsize njengeplastiki ecocekileyo, igcina ingqibelelo yesakhiwo kunye nokukhusela ukusasazeka kwedangatye.

Kufuneka igxininiswe into yokuba i-PTFE i -flame-retardant , ayinakutsha ngokupheleleyo.Xa ishushu ngaphezu kwendawo yayo yokunyibilika (327°C) kwaye ngokuqhubekayo, iyabola kwaye ikhuphe imisi eyityhefu. Ngokuqhelekileyo imelana nobushushu bexesha elide ukuya kuma-260°C kwaye ihlala izinzile ngokufutshane kwi-300–360°C.

Ukubola kumlilo ovulekileyo : Xa ibonakaliswe ngokuthe ngqo kumlilo ovulekileyo (ide ngaphezu kobushushu bayo bokubola), i-PTFE layer iyabola, kodwa inkqubo ayivelisi ubushushu obaneleyo okanye izinto ezinokutsha ukuze zigcine ukutsha. Idityaniswe nenkxaso yefiber yeglasi, amadangatye akakwazi ukusasazeka ngokuqhubekayo.

Isishwankathelo, ilaphu le-PTFE elinobushushu obuphezulu liyamelana nedangatye ngenxa yokuba izinto zayo ezingundoqo ze-PTFE zenzelwe imolekyuli ukuxhathisa ukutsha .Amabhondi ekhemikhali anamandla amakhulu, iindlela zokubola ezikhethekileyo, kunye namathambo amathambo eglasi angatshayo kunye abumba umqobo oqinileyo ongatshiyo.

Olu lwazi lungentla lunikwe nguJiangsu Aokai New Materials Technology Co., Ltd.

Iiparameters ezineenkcukacha, iimeko zesicelo kunye nezisombululo ezilungelelanisiweyo zoluhlu lwethu olupheleleyo lwemveliso - kuquka i-PTFE i-high-temperature tape, i-PTFE high-temperature tape, i-PTFE high-temperature mesh belt, ibhanti elingenamthungo lomatshini wokubopha, ilaphu le-PTFE elinecala elinye, i-high-temperature resistant-conveyor ibhanti kunye ne-glass-resistant resistant:

●  UMnu Guo: 18944819998

●  UMnu. Liu: 13705266308

Sixhasa ifilosofi yenkonzo yobuchwephesha kunye nokunyaniseka, kwaye sizinikele ekukuboneleleni ngezisombululo ezihlala kunye kunye nenkonzo enomdla!