Iimpahla ezigcwalisiweyo zePTFE

Amabanga agcwalisiweyo ePTFE anokudityaniswa kwaye alungiselelwe iimeko ezithile zenkonzo kunye nezicelo.I-PTFE egcweleyoamabakala aneepropathi ezithile zophuculo olusekwe kwi-filler, uhlobo lwe-filler & nepesenti ye-filler.

Iimpawu zoomatshini

Ukuziphatha okucinezelayo kwe-PTFE egcweleyo yenye yezona zinto zibalulekileyo kumyili nakumsebenzisi.

Xa kuthelekiswa ne-PTFE engazaliswanga imodyuli ecinezelayo ye-PTFE ezaliswe yi-PTFE inkulu kwaye ngenxa yoko, ngenxa yoxinzelelo olufanayo, i-deformation ephantsi iya kwenzeka.Lo mahluko uyancipha, nangona kunjalo, njengoko amaqondo obushushu enyuka kunye nokusebenza koxinzelelo lwe-PTFE engagcwaliswanga kwaye izaliswe isondela kunye kwi-200 ° C (392 ° F).Isizathu siphantse ukuba ukuncitshiswa ngokubanzi kwimodyuli yoxinzelelo ye-PTFE matrix igqithisa inkxaso enikezelwa ngokusasazwa okungahleliwe kwamasuntswana okuzalisa.

Iimpawu zombane

Ukongezwa kwezihluzi kunempembelelo ephawulekayo kwiipropati zombane ngokunjalo.Ngokukodwa, i-graphite - kunye nekhabhoni egcwele i-compounds ingaba ne-conductivity ephezulu, enokuthi incedise ukuchithwa kweentlawulo ze-static kwizicelo apho ezi ziyingxaki.

I-PTFE ezaliswe ngumxube wezinto eziphathekayo, kwaye i-voids - kungakhathaliseki ukuba incinci kangakanani - ihlala ikhona: njengazo zonke izinto ezinobungozi, iipropati zixhomekeke kubume bendalo kunye naluphi na ungcoliseko olungenanjongo.Iipropati zombane azikho ngaphandle kwaye zixhomekeke ngokuphawulekayo kumswakama wokusingqongileyo.

Iimpawu ezishushu

Ukwandiswa kwe-thermal kwezona zihluzi zincinci kune-PTFE kwaye njengoko ukwandiswa kwe-composite kuya kuba kwindawo ethile phakathi kwamacandelo amabini, iikhompawundi ezizaliswe yi-PTFE zanda ngaphantsi kwe-PTFE engazaliswanga.Ngexesha lokwenziwa kweefayili ezithile, ngokukodwa iifibers kunye neeplatelet, ziqhelaniswa ngokukhethiweyo (njengamaqhekeza e-PTFE ukuya kwinqanaba elingaphantsi kakhulu).Isiphumo sesokuba ezinye iikhompawundi zinokwandiswa okwahlukileyo ngokuphawulekayo kwiindlela ezihambelanayo kunye ne-perpendicular ukuya kwicala lokubumba.

I-thermal conductivity ye-PTFE iphantsi kakhulu, iyenza ibe yinto efanelekileyo yokugquma i-thermal.Izihluzi ezininzi, ngokukodwa isinyithi kunye nee-oxide zetsimbi, zine-conductivity ephezulu ye-thermal, kodwa ngokubanzi zifakwe ngokufanelekileyo yi-PTFE ukwenzela ukuba ukuqhutyelwa kweekhompawundi kusephantsi.