Sei PTFE Tepi Ichigona Kuchengeta Kunamatira Kwayo Pasina Kukundikana munzvimbo Dzakakwirira-Tembiricha?

Iyo PTFE high-temperature tepi inogadzirwa neJiangsu Aokai New Materials inoshandisa silicone pressure-sensitive adhesive, inogona kushanda zvakasimba pa250 ° C kwenguva yakareba. Zvikonzero zvikuru zviri muzvinhu zvitatu zvinotevera:

1. Main Chain Ine Si-O Bond ine High Thermal Decomposition Temperature

Iyo molecular main chain yesilicone pressure-sensitive adhesive muPTFE high-temperature tepi ine Si O Si O chimiro. Simba rechisungo cheSi-O bond rinenge 445 kJ/mol, rakanyanya kukwirira kupfuura C-C bond (inenge 348 kJ/mol) kana C–H bond (inenge 413 kJ/mol) mumapolymer akajairika senge acrylates nemarubha.

Pakupisa kwakanyanya, C-C mabhondi anotsemuka nyore nyore uye anokonzeresa kuparara kwecheni, nepo Si-O mabhondi achida simba rakawandisa kuti atsemuke. Naizvozvo, iyo molecular main chain yesilicone PSA inoramba yakasimba pa250 ° C, ichidzivirira kurasikirwa kwekunamatira kunokonzerwa nekupisa-oxidative degradation.

2. Chemical Cross-Linking Network Inodzivirira Kunyorova uye Kuyerera paKunyanya Kupisa

Uncrosslinked silicone rabha inoshanduka kuita viscous fluid pakupisa kwakanyanya uye inorasikirwa zvachose simba rakabatana. Nekudaro, iyo silicone PSA muPTFE yakakwirira-tembiricha tepi yakachinjika kuburikidza neperoxide crosslinking kana platinum-catalyzed yekuwedzera crosslinking, ichibatanidza mutsara mashetani cheni mune yakagadzikana matatu-dimensional network.

Ichi chakabatana chimiro chinobvumira iyo inonamira layer kuti ichengetedze yakasimba elastic maitiro pa250 ° C isina kunyunguduka kana kuyerera senge thermoplastic zvinhu. Kunyangwe nekudzikira kushoma mumodulus, inoramba ichichengetedza yakakwana yakabatana simba rekuramba peeling.

3. Kudzika kweGlass Transition Temperature (Tg ~ −120°C)

Silicone PSA muPTFE high-temperature tepi ine Tg yakanyanya kuderera (inenge -120 ° C), zvichireva kuti cheni dzayo dzemamorekuru dzinoramba dziri mumhepo yakanyanyisa kuyambuka tembiricha yakakura kubva -70 ° C kusvika 300 ° C, pane brittle glassy state.

Nekudaro, pakupisa kwakanyanya, iyo yekunamatira layer haiomese kurasikirwa nekunyorova kugona kana kupfava kusvika kuyerera zvakanyanya. Iyo inochengetedza ine mwero modulus (yekuchengetedza modulus G' ≈ 10⁴–10⁶ Pa), iri iro rakakwana hwindo rekumanikidza-inonzwa kunamatira.

Silicone PSA pachayo ine yakaderera pamusoro pesimba (inenge 22 mN/m), ichigonesa kunyorova yakaderera-pamusoro-simba substrates sePTFE uye silicone rabha zvakanaka kunyangwe pakupisa kwakanyanya - kudzivirira kudhirowa kunokonzerwa nekushata kwesimba kunoenderana.

Ruzivo rwuri pamusoro rwunopihwa neJiangsu Aokai New Materials Technology Co., Ltd.

Kuti uwane ruzivo rwakadzama, mamiriro ekushandisa uye zvigadziriso zvakagadziridzwa zvechigadzirwa chedu chizere - zvinosanganisira PTFE yakakwirira-tembiricha jira, PTFE yakakwirira-tembiricha tepi, PTFE yakakwirira-tembiricha mesh bhandi, isina musono bhandi re laminating michina, single-sided PTFE jira, yakakwirira-tembiricha inodzivirira inodzivirira kuburikidza ne-high-temperature inotakurisa --

·  Nharembozha yebasa: Mr. Guo 18944819998 Mr. Liu 13705266308

Kuomerera kuhuchenjeri hwesevhisi yehunyanzvi uye kutendeseka, isu takazvipira kukupa iwe-imwe-kumira mhinduro uye inoteerera sevhisi!