Kusiyana kwa Kukhazikika kwa Kachitidwe ka PTFE Kutentha Kwambiri Kwatepi Yomwe Imachititsidwa ndi Njira Ziwiri Zakukhwima za Silicone Pressure-Sensitive Adhesive: Kukhwima-Kutentha Kwapachipinda vs Kukhwima Kwapamwamba

Jiangsu Aokai New Materials, katswiri wopanga tepi yotentha kwambiri ya PTFE, amafotokoza za kusiyana kwa kukhazikika kwazinthu komwe kumabwera chifukwa cha kutentha kwachipinda komanso kutentha kwambiri kwa zomatira za silikoni.

I. Kusiyana kwa Crosslinking Network ndi Cohesive Strength

1. Kukhwima kwa kutentha kwakukulu: Mapangidwe a network crosslinking wandiweyani

Pansi pa kutentha kwa 120 ° C ~ 180 ° C, maunyolo a molekyulu mkati mwa zomatira amatha kuyenda mokwanira, kukweza kugunda pafupipafupi kwamagulu ogwira ntchito. Ma network ophatikizika kwambiri, omwe amagawidwa mofananamo amitundu itatu amapangidwa, kupatsa zomatirazo ndi mphamvu zolumikizana zolimba kuti zigonjetse kutuluka ndi kupindika pansi pa kutentha kwakukulu.

2. Kusakhwima kwa chipinda: Kusasunthika kolumikizana

Zomwe zimachitika zimapitilira pang'onopang'ono komanso mosakwanira pa kutentha kozungulira (~ 25 ° C), zomwe zimapangitsa kuti pakhale malo ochepa, osalumikizana bwino komanso zigawo zambiri zaulere zomwe sizinachitike zomwe zimatsekeredwa mkati mwa zomatira. Zinthu zotayirira zotere zimavutika kwambiri ndi kusalumikizana kokwanira, ndipo zimafewetsa kapena kukwawa ndi kutentha.

3. Kukhudza kwambiri zotsalira zomatira pambuyo peeling

Tepi yokhwima yotentha kwambiri imakhala ndi mphamvu yolumikizana kwambiri kuposa mphamvu yomatira; zomatira zonse wosanjikiza amasenda mophatikizana popanda zotsalira. Mosiyana ndi izi, tepi yokhwima yokhazikika m'zipinda imalephera kugwirizanitsa, ndi zomatira zong'ambika zimasiyidwa pazigawo zomangika ndikupanga kuipitsidwa - uku ndiye kusiyana kowoneka bwino kwambiri pakati pa njira ziwirizi.

II. Interfacial Bond Mphamvu yokhala ndi PTFE Substrate

1. Kutentha kwapamwamba: Kumangirira kwa Chemical

PTFE imakhala ndi mphamvu zotsika kwambiri ndipo imafuna chithandizo chapadera chapamwamba kapena zokutira zoyambira. Kutentha kwapamwamba kumathandizira kuchiritsa koyambira ndi zomatira za silikoni nthawi imodzi, ndikupanga maukonde olumikizana ndi mankhwala pamawonekedwe. Mphamvu yomangirira kwambiri imalepheretsa zomatira delamination kuchokera pagawo laling'ono panthawi yobwereza kutentha kwambiri.

2. Kukhwima kwa chipinda: Kudalira kutsatsa kwakuthupi

Kutentha kozungulira sikungatsegule mphamvu zonse zoyambira. Kulumikizana pakati pa zomatira ndi gawo lapansi makamaka kumadalira kufooka kwa thupi la intermolecular, ndi mphamvu yomangirira yotsika kwambiri kuposa kuphatikizika kwamankhwala.

3. Zowopsa zosiyanasiyana za kutentha kwambiri kwa delamination

Maonekedwe ogwiritsiridwa ntchito ndi kutengeka kwa thupi amalephera mosavuta pansi pa kutentha kwa nthawi yaitali, zomwe zimapangitsa kusamutsidwa kwa zomatira kuzinthu zogwirira ntchito ndi nsalu za PTFE zopanda kanthu. Mosiyana ndi izi, zigawo zomangira zamankhwala zopangidwa ndi kukhwima kwa kutentha kwambiri zimachotsa zoopsa zotere.

III. Zotsalira za Mamolekyulu Ochepa & Kutentha Kwambiri Kwambiri

1. Kutentha kwapamwamba: Kuchotsa zonyansa zokwanira musanaperekedwe

Njira yokhwima yotentha kwambiri imakhala ngati njira yoyeretsera bwino isanakwane, pafupifupi kuchotseratu zinthu zosasinthika kuphatikiza zoyambitsa, mafuta otsika a silicone ndi zinthu zomwe zimachitika. Zomatira zomalizidwazo zimakhalabe zoyera ndi mpweya wosasunthika womwe umatha kugwiritsidwa ntchito pomaliza.

2. Kutentha kwa chipinda: Zinthu zazikulu zotsika kwambiri zomwe zimatsekeredwa mkati

Tizigawo tating'ono tating'onoting'ono timakhalabe osindikizidwa mkati mwa matrix omatira kutentha kutentha. Pamene tepiyo imayamba kutenthedwa ndi kutentha pamwamba pa 200 ° C, zinthu izi zimasinthasintha mofulumira ndikukula mwamphamvu.

3. Zowononga kukhazikika

Kusunthika kwakukulu kwa zinthu zocheperako kumayambitsa kuphulika, matuza komanso kutayika kwamphamvu pa tepi. Itha kusiyanso madontho amafuta a silikoni pazinthu zotsekedwa ndi kutentha pakagwa mvula yotentha kwambiri. Chifukwa chake, tepi yokhwima m'zipinda imawonetsa kusakhazikika pakuwotha koyamba, kulephera kutsatira miyezo yaukhondo pamagetsi, kulongedza zakudya ndi mafakitale ena olondola.

IV. Kukalamba Kwanthawi yayitali & Performance Drift

1. Kukhwima kwa kutentha kwambiri: Kukhazikika kwa thermodynamically pakubereka

Kutentha kwapamwamba kumapangitsa kuti zinthu zisokonezeke kwambiri, motero matepi amachoka m'fakitale ndi ma metrics okhazikika. Zizindikiro zofunika kwambiri monga kulimba kwa peel ndi kugwirizira mphamvu kumakhalabe kosasinthasintha nthawi yonse yautumiki, popanda kuchepera kowonekera pambuyo pochiritsa, kuuma kapena kusinthasintha kwapang'onopang'ono, kumapereka magwiridwe antchito odziwikiratu.

2. Kukhwima kwa chipinda: Kukhwima kwachiwiri kosalekeza panthawi ya utumiki

Tepi yochiritsidwa m'chipinda ndi kutentha imakumana ndi zosakanikirana zosakwanira zikakumana ndi kutentha kwambiri pamalo a kasitomala. Pang'onopang'ono kuumitsa ndi embrittlement kumachitika pakapita nthawi; mphamvu ya peel imakwera poyamba kenako imatsika kwambiri, ndipo tack imatha kutayika kwathunthu pakagwa zovuta kwambiri.

3. Kuyerekeza kwathunthu kwa kudalirika kwautumiki

Kupindula ndi zida zokhazikika zamakemikolo, tepi yokhwima yotentha kwambiri imakhalabe ndi mphamvu zogwira ntchito mosalekeza 260 ° C, kukana kutsetsereka ndi kupindika m'mphepete. Kugwira ntchito kwa tepi yokhwima m'zipinda kumangoyenda mosalekeza, zomwe zimapangitsa kuti njira zopanga zikhale zosatheka. Kusiyanitsa kwakukulu kumakhala kuti kutentha kwapamwamba kumamaliza kusintha kosasunthika kwa mankhwala musanaperekedwe, kuonetsetsa kudalirika kwakukulu kwa ntchito kwa ogwiritsa ntchito mapeto.

Zomwe zili pamwambapa zaukadaulo zimaperekedwa ndi Malingaliro a kampani Jiangsu Aokai New Materials Technology Co., Ltd.

Ngati mukufuna kudziwa mwatsatanetsatane, zochitika ntchito ndi mayankho makonda athu zonse katundu katundu kuphatikizapo PTFE mkulu-kutentha nsalu, PTFE mkulu kutentha zomatira tepi, PTFE mkulu-kutentha mauna lamba, chosakanizika kutentha atolankhani lamba, single-mbali PTFE nsalu, apamwamba kutentha zosagwira magalasi, kukhudzana ndi magalasi zosamva kutentha, chonde kukhudzana ndi magalasi osamva kutentha ndi conveyor.

· Mafoni a Utumiki: Bambo Guo +86 18944819998

· Mafoni a Utumiki: Bambo Liu +86 13705266308

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