Teepu PTFE dị obosara-okpomọkụ chọrọ PSA silicone nke na-ejigide adhesion site na -70°C ruo 260°C. Isi ihe imewe: primer-anchored Layer Layer (na-egbochi delamination), microstructure nke oke osimiri (MQ resin Islands + polysiloxane na-aga n'ihu na-aga n'ihu), gradient crosslinking (oke njupụta dị n'ime ime maka nguzogide creep, obere njupụta elu elu maka obere okpomọkụ tack), na okpomọkụ-nkwụsi ike fillers (cerium oxide maka oxide). Akụkụ siloxane emezigharịrị Phenyl na-egbochi kristal dị ala, na-eme mgbanwe n'okpuru -100°C.

N'oge mkpuchi teepu PTFE, ihe mgbaze volatilization ọnụego nke silicone mgbali-enwe mmetụta nrapado bụ oké egwu usoro oke. Oke ngwa ngwa → akpụkpọ anụ n'elu, ọkwa adịghị mma, pinholes (ihe mgbaze tọrọ atọ), na craters (condensation ma ọ bụ ihe mmetọ kpatara). Ọ dị nwayọ → mgbada, akụkụ gbara ọkpụrụkpụ, na iwe iwe na PTFE ike dị ala. Atụmatụ kachasị mma: iji nwayọọ na-agbanwe mmalite mmalite maka ịha nha na mgbanarị afụ, wee mee ngwa ngwa ihicha maka ịkpụzi. Jiri ihe mgbaze agwakọta (toluene/xylene + ihicha ngwa ngwa) na gradient oven okpomọkụ (ala → ọkara → elu).

Teepu okpomọkụ dị elu PTFE na-efunahụ adhesion ka ejiri ya ugboro ugboro n'ihi mmetọ elu (uzuzu, mmanụ silicone), ọdịda nrapado cohesive ọdịda (ihe fọdụrụ), ma ọ bụ njikọ na-adịghị ike. Ngwọta: akwa-crosslink silicone PSA (mbugharị dị ala, ike na-ejigide ike), ọgwụgwọ primer na mkpụrụ PTFE, nkwado fiberglass siri ike, na njikwa kwesịrị ekwesị (ebe dị ọcha, bee oyi, 180 ° n'akuku). Nnwale ọnụọgụ na-akwado nkwalite.

PTFE teepu okpomọkụ dị elu echekwara n'ụdị mpịakọta nwere ike ịta ahụhụ site na ntinye nke interlayer (igbochi) na nnyefe nrapado n'akụkụ na-adịghị mma. Mgbọrọgwụ na-akpata: PTFE film na-agbanwe ebe nchekwa na silicone PSA creep n'okpuru nrụgide na okpomọkụ. Ngwọta: mgbakasị ikuku gradient – ​​siri ike n'ígwé dị n'elu, kwụpụ n'ígwé dị n'ime - na-eji njikwa esemokwu mechiri emechi. Mmeju na mkpuchi ntọhapụ, nchekwa kwesịrị ekwesị (15-40°C, 30-70% RH), ntinye kwụ ọtọ, na ntụgharị mpịakọta nkeji nkeji.

Teepu dị elu nke PTFE ejiri na kọntaktị nri kwesịrị ịkwanyere oke oke okpomọkụ: ≤260°C maka ojiji na-aga n'ihu (enweghị oke oge), 260-300°C maka ihe ruru nkeji 30 naanị, yana> 300°C amachibidoro. Teepu bụ maka kọntaktị na-apụtaghị ìhè naanị (akara tray, mkpuchi mkpuchi okpomọkụ), ọ bụghị ihe mkpuchi nri. Arụla ọrụ na-enweghị ibu nri (ọkụ akọrọ). Dochie ma ọ bụrụ na ọnya, odo, ma ọ bụ eyi.

Silicone mgbali-sensitive adhesives (PSA) maka PTFE elu-okpomọkụ teepu dịgasị iche iche na elu okpomọkụ arụmọrụ ịka nká. Methylphenyl silicone PSA na-ejigide ike peel> 85% mgbe ụbọchị 250C/7 gasịrị, ebe ụdị methyl ọkọlọtọ na-agbada na 50-70%. Usoro mgbakwunye-agwọ (hydrosilylation) na-enye nkwụsi ike ka mma karịa peroxide-gwọrọ. Maka ọrụ 200°C+ na-aga n'ihu, họrọ akara ule phenyl dị elu gwọrọ agbakwunyere.

Teepu PTFE na-enwe mmetụta na-ekpo ọkụ (PSA) ga-emerịrị ikpo ọkụ mgbe ọ na-arapara n'ahụ. Ịtinye ihe ndị na-eju mmiri na-eme ka ọkụ eletrik dịkwuo mma mana ọ na-emerụ ahụ nrapanye. Ntụziaka kacha mma na-eji irighiri ihe dị okirikiri (dị ka skeleton na-eduzi) agwakọta ya na ezigbo irighiri ihe (iji mejupụta oghere), na-edobe mkpokọta ihe nkpuchi dị n'elu ọnụ ụzọ pecolation. Zere flakes na eriri; ha na-egbu tack.

PTFE elu-okpomọkụ teepu na-eje ozi na PV ụlọ ọrụ na abụọ dị iche iche ọrụ: usoro consumable (na-egbochi EVA overflow adhesion on laminators, solder mask) na ogologo ndụ mkpuchi (busbar kechie, junction igbe fixation). Maka ojiji nke ime ụlọ na-adịgide adịgide, teepu ga-agafe IEC 61215: 1000-2000h okpomọkụ, UV, thermal cycling (-40°C ka +85°C), na silicone PSA na shrinkage <1%.

PTFE elu-okpomọkụ teepu etinye aka okpomọkụ-akara mma na akara ibe na-anapụta anọ isi ụkpụrụ: egbochi mgbaze plastic adhesion (na-ewepụ downtime), na-echebe ọnụ akara ọnwụ, homogenizes okpomọkụ / nrụgide maka na-agbanwe agbanwe akara, na-ebelata film esemokwu. A na-atụ aro teepu na-akwado fiberglass (0.13-0.25 mm) nwere PSA silicone (≥260°C). teepu ojii mgbochi static maka ahịrị ọsọ dị elu.

A na-ekpebi ihe mgbochi mmiri vapor mgbochi nke teepu nrapado PTFE bụ isi site na ntụpọ mkpuchi (micropores, microcracks, fiber wicking) karịa PTFE's intrinsic hydrophobicity. Ihe nkiri PTFE dị ọcha na-enye naanị WVTR ọkara. Multi-layer mkpuchi na lamellar fillers (mica, glass flakes) na-emepụta mmetụta labyrinth, na-ebelata nke ukwuu nnyefe vepo. Maka mkpuchi dị elu iru mmiri, kọwaa mkpuchi densified.