Eli nqaku lithelekisa ukuchaneka kweendlela ezintathu zokuvavanya idigri ye-silicone ye-adhesive-sensitive adhesives. I-solvent extraction (umxholo we-gel) ilinganisa i-insoluble network fraction ngokusebenzisa i-Soxhlet extraction - i-overestimates ngenxa yamacandelo afakwe emzimbeni ephosakeleyo njenge-crosslinks, ukuchaneka ± 2-5%, ukuchaneka kwekhemikhali ephantsi. I-DSC ilinganisa ubushushu obushiyekileyo bokusabela (α=1-ΔHresidual/ΔHtotal) - ethembekileyo kwinguqu ephantsi ukuya kwephakathi kodwa iqikelelwa ngoguquko oluphezulu ngenxa yokusasazwa kwamaqela ashiyekileyo alinganiselweyo, ukuphinda-phinda <± 2%.

Ukomisa linyathelo elibalulekileyo kwi-PTFE yokuvelisa ilaphu lobushushu obuphezulu. Iziphene eziqhelekileyo ziquka: ukuqhekeka (ukomisa ngokukhawuleza, ukukhupha isikhumba), ukufuduka (amasuntswana ahambela phezulu, ibhondi yangaphakathi ebuthathaka), i-pinholes / i-blister (umoya obanjwe okanye umphunga), amabala amhlophe kunye ne-chalking (ukufuduka kwe-surfactant okanye ukuxutywa okungagqibekanga), ukutyheli / ukupheka (ukushisa ngokugqithiseleyo kwezongezo), i-delamination (i-sherinkage ye-shenkling okanye i-learling ye-orenji) ukushwabana), umphezulu womile kodwa ngaphakathi umanzi (ukulusu lubamba ukufuma), kunye nemiphetho engqindilili (isiphumo sekofu). Izisombululo zibandakanya iiprofayili zokomisa ezilawulwayo, ukungena komoya okufanelekileyo, kunye nokunyangwa kwangaphambili kwe-substrate.

Ilaphu le-PTFE elinobushushu obuphezulu lisetyenziswa kakhulu kushishino lweekhemikhali kwizicelo ezingundoqo ezisixhenxe: i-gaskets yeflange kunye ne-linings yombhobho (ixhathisa i-acids eyomeleleyo / iialkali), i-reactor kunye ne-tank linings (ikhusela ukubola kwesinyithi, ukucoca lula), iingxowa zokucoca igesi e-corrosive flue (ukuya kwi-260 ° C), i-anti-corrosion ye-corrosion expansion, i-anti-corrosion expansion ukubumba okuhlanganisiweyo, kunye nokusonga kombane/kwe-thermal. I-FDA kunye ne-UL amabakala akhoyo.

Iiarhente zokugqiba umphezulu ezifakwe kwilaphu le-fiberglass phambi kokutyabeka kwe-PTFE zibalulekile kwi-PTFE yokugqibela yokusebenza kwelaphu lobushushu obuphezulu. I-Organosilane coupling agents zenza iibhulorho ze-molecular phakathi kwe-fiber yeglasi ye-inorganic kunye ne-organic PTFE, ukunyusa amandla e-peel ukusuka ku-<2 N / cm ukuya kwi-4-8+ N / cm. Unyango olufanelekileyo lukwaphakamisa ukuxhathisa ukushisa (260 ° C +), ukusebenza kwe-dielectric, kunye nokuchasana kweekhemikhali. Ilaphu elingaphathwanga likhokelela kwi-delamination, ukugqabhuka, kunye nobomi obufutshane benkonzo.