Momwe PTFE Tape Coating Coating Imakhudzira Madzi a Nthunzi Chotchinga

Liti PTFE zomatira tepi ntchito kusindikiza zigawo tcheru chinyezi - monga mpanda pakompyuta, HVAC flanges, kapena mankhwala chidebe lids - lingaliro wamba kuti PTFE a hydrophobicity zimatsimikizira wangwiro madzi nthunzi chotchinga. Izi sizowona nthawi zonse.

Mamolekyu a nthunzi wamadzi ndi ang'onoang'ono. Amatha kufalikira kudzera munjira zazing'ono zomwe madzi ambiri sangathe. The kwenikweni madzi nthunzi kufala mlingo (WVTR) wa PTFE tepi zimatengera zochepa umagwirira PTFE ndi zambiri ❖ kuyanika dongosolo - zofooka ngati micropores, microcracks, ndi chosakwanira CHIKWANGWANI encapsulation.

Aokai PTFE yasanthula WVTR pa makulidwe ndi makulidwe ake. Nkhaniyi ikufotokoza momwe PTFE's chemical structure, № ℃ ℃, makulidwe njira, ndi filler zosinthidwa zimagwirizanira kudziwa nthunzi chotchinga ntchito.

PTFE Chemical Structure - Zonse Zopindulitsa ndi Zochepa

1. Ubwino - Hydrophobicity ndi Crystallinity

2. Zochepa - Ma Domain Amorphous ndi Mphamvu Zofooka za Intermolecular

• Mphamvu yofooka ya intermolecular pakati pa PTFE ma molekyulu

• m'magawo Ma voids ochulukirapo aulere amorphous amapanga njira zophatikizika

• Kanema wolimba wa PTFE amangopereka WVTR yapakatikati - yotsika kwambiri kuposa PVDC kapena EVOH

• PTFE sizinthu zotchinga mwachibadwa

Chidziwitso chofunikira: Intrinsic PTFE ndi chotchinga chapakati, osati chapadera. Kuchita bwino kwa tepi kumadalira kwambiri zolakwika zokutira.

Zowonongeka Zowonongeka Kwambiri - Micropores, Microcracks, ndi Fiber Wicking

Ichi ndiye chinthu chachikulu chomwe chimayang'anira magwiridwe antchito. Matepi ambiri omatira a PTFE amapangidwa kudzera muimpregnation kapena zokutira kwa PTFE kubalalitsidwa ndikutsatiridwa ndi sintering, pomwe zolakwika zomwe zidabadwa zimapangidwa mosavuta:

Mapeto othandiza: WVTR yonse yomaliza ya PTFE tepi imayang'aniridwa ndi kachulukidwe kachilema , osati katundu wochuluka wa PTFE utomoni.

Aokai PTFE imapereka matepi omatira a PTFE okhala ndi kachulukidwe ka ❖ kuyanika. Pamapulogalamu omwe amafuna WVTR yocheperako (<15 g/m²·tsiku), timalimbikitsa giredi yathu yokhala ndi mitundu ingapo, yomwe imagwiritsa ntchito mapasi atatu otsekera kuti atseke motsatizana zibowo ndi kuchepetsa kachulukidwe ka microcrack.

Makulidwe Opaka ndi Labyrinth Effect - Njira Zochepetsera WVTR

Kuchuluka kwa zokutira kumakulitsa njira yolowera nthunzi koma sikungophimba zolakwika zomwe zilipo zokha. Mayankho abwino kwambiri alembedwa pansipa:

Chenjezo ndi zodzaza: Kudzaza mochulukira kumasokoneza kusinthasintha komanso kusamata kwa zinthu zomwe zamalizidwa. Kusamala kumafunika.

Surface Condition - Hydrophobic koma Osatsimikiza

Chophimba cha PTFE cha hydrophobic chimakhala ndi ngodya yolumikizana ndi madzi (nthawi zambiri 110-120 °), kuletsa kupangika kosalekeza kwa filimu yamadzi pamtunda ndikutsitsa mosadukiza mphamvu yolowera mkati mwa nthunzi.

Komabe: Ubwino wa pamwambawu sungathe kuthana ndi zotchinga zosauka zomwe zimayambitsidwa ndi zolakwika zamkati. Ngati ma micropores kapena ming'alu alipo, nthunzi yamadzi imafalikirabe mosasamala kanthu za hydrophobicity ya pamwamba.

Mwachidule - Zolepheretsa Kuchita Kumadalira Kuwongolera Chilema

Kutenga komaliza: Pamene tepi yomatira ya PTFE ikagwiritsidwa ntchito posindikiza chinyezi chambiri, zolakwika zomata zomwe zimayambitsidwa ndi njira (ma micropores, ming'alu, kupukuta ulusi) zimakhalabe kufooka kwakukulu kwa kuthekera kwake kotchinga. Kusindikiza kodalirika kumachitika kudzera mu chithandizo cha densification kuphatikiza zokutira zamitundu yambiri ndikusintha ma filler . Tepi yamagulu a PTFE imakhala ngati chotchinga chodalirika chamitundu ingapo pansi pazovuta zomwe zimafuna kukana kutentha kwambiri, kukana kwa dzimbiri, kukhazikika kwa chinyezi, komanso kutulutsa kosasunthika nthawi imodzi - koma osati ngati chotchinga choyimira kwambiri ngati chitsulo chojambula kapena PVDC.

Mwachidule , madzi nthunzi chotchinga katundu wa PTFE zomatira tepi si anatsimikiza ndi PTFE a hydrophobicity yekha. Intrinsic PTFE ndi chotchinga chapakatikati (WVTR 5-10 g/m²·tsiku la kanema wopanda chilema). Komabe, matepi othandiza amavutika ndi ma micropores, ma microcracks (kuchokera ku matenthedwe osagwirizana ndi magalasi a fiberglass), ndi kuwotcha fiber - kukweza WVTR kufika 50-200 g/m²·tsiku.

Kuti mukwaniritse WVTR yotsika (<15 g/m²·tsiku), tchulani zokutira zamitundu ingapo (madutsa atatu oyimilira) ndi/kapena kusintha kwa lamellar filler (10-20 wt% mica kapena magalasi agalasi). Mphamvu ya labyrinth yochokera ku fillers imakakamiza nthunzi yamadzi kutenga njira zokhotakhota, kumachepetsa kwambiri kufalikira. Komabe, kudzaza zodzaza kwambiri kumatha kuchepetsa kusinthasintha komanso kusagwira ntchito - moyenera ndikofunikira.

Mukufuna tepi yomatira ya WVTR PTFE yotsika kuti musamamve chinyezi? Aokai PTFE imapereka magiredi angapo ophimbidwa komanso osinthidwa modzaza ndi zolemba zolembedwa za WVTR. Lumikizanani nafe ndi WVTR yanu yofunikira, kutentha kwa ntchito, ndi zosowa zosinthika.

Zomwe zaperekedwa ndi Malingaliro a kampani Jiangsu Aokai New Materials Technology Co., Ltd.

Ngati mukufuna zatsatanetsatane zaukadaulo, malangizo ogwiritsira ntchito, ndi mayankho makonda athu zonse katundu katundu kuphatikizapo PTFE mkulu-kutentha nsalu, PTFE mkulu kutentha zomatira lamba, PTFE mauna conveyor lamba, lamba fuser wosakanizika, single-mbali PTFE nsalu, mkulu kutentha kusagwira lamba ndi kutentha fiberglass lamba , chonde lemberani ife.

• Bambo Guo: +86 18944819998

• Bambo Liu: +86 13705266308

Potsatira malingaliro abizinesi a ukatswiri ndi umphumphu, timadzipereka tokha popereka mayankho okhazikika amodzi ndikuthandizira makasitomala mwanzeru.