I-Jiangsu Aokai New Materials, umenzi oqeqeshiweyo we-PTFE iteyiphu yobushushu obuphezulu, ichaza ngokubanzi ukuhlukana kozinzo lwemveliso eziswa ngubushushu begumbi kunye nobushushu obuphezulu bokuvuthwa kwe-silicone ye-adhesive-sensitive adhesive (PSA).
I. Iiyantlukwano kwiNethiwekhi ye-Crosslinking kunye namandla okubambisana
Ngaphantsi kwenkqubo yokushisa kwe-120 ° C ~ 180 ° C, i-molecular chain ngaphakathi kwe-adhesive layer ifumana ukuhamba okwaneleyo, iphakamisa ukungqubana kwamaqela asebenzayo asebenzayo. Uthungelwano oluxananazileyo, olusasazwa ngokulinganayo olunamacala amathathu luyenziwa, lunika i-adhesive ngamandla aqinileyo okumelana nokuhamba kunye nokuguqulwa phantsi kobushushu obuphezulu.
2. Ukuvuthwa kwegumbi-lobushushu: Isakhiwo esinqamlezileyo esikhululekileyo
Iintshukumo ziqhubeleka kancinane kwaye ngokungaphelelanga kumaqondo obushushu akwi-ambient (~25°C), okukhokelela ekubeni iindawo ezinqamlezileyo ezinqabileyo, ezingalinganiyo kunye nentaphane yamacandelo ekhonkco asimahla avaleleke ngaphakathi kokuncamathelisa. Ezo zakhiwo zixengaxengayo zitsala nzima kakhulu ekudibaneni okunganelanga, kwaye ziyathamba okanye zirhubuluze ngokulula phantsi kobushushu.
3. Impembelelo eqinisekileyo kwi-adhesive residue emva kokucoca
Iteyiphu yobushushu obuphezulu iqhayisa ngamandla adityanisiweyo anamandla kunamathelo adibanisa ubuso; wonke umaleko wokuncamathelisa uyaxobula ngokudibeneyo ngaphandle kwentsalela. Ngokwahlukileyo koko, iteyiphu evuthwayo yobushushu begumbi ingena lula ukusilela okubambeneyo, incamathelisa ekrazukileyo ishiywe kwi-substrates ebotshiweyo kwaye yenze ungcoliseko olunenkani - lo ngowona msantsa wokusebenza obonakalayo phakathi kwezi nkqubo zimbini.
II. I-Interfacial Bond Amandla kunye ne-PTFE Substrate
1. Ukuvuthwa okuphezulu kobushushu: I-Chemical anchoring bonding
I-PTFE ine-ultra-low surface energy kwaye ifuna unyango olukhethekileyo lomphezulu okanye i-primer coating. Ukuvuthwa kobushushu obuphezulu kwenza ukuba i-co-curing ye-primer kunye ne-silicone adhesive ngaxeshanye, ivelise i-interpenetrating network bonding networks at the interface. Amandla e-ultra-high bonding akhusela i-adhesive delamination epheleleyo kwi-substrate ngexesha lokuphindaphinda imisebenzi yobushushu obuphezulu.
2. Ukuvuthwa kwegumbi-lobushushu: Ukuxhomekeka kwi-adsorption yomzimba
Ubushushu be-Ambient abukwazi ukwenza amandla okusabela ngokupheleleyo kweprimer. Ukudibanisa phakathi kwe-adhesive kunye ne-substrate ikakhulu kuxhomekeke kubuthathaka be-intermolecular adsorption, kunye namandla okudibanisa angaphantsi kakhulu kune-chemical crosslinking.
3. Imingcipheko eyohlukeneyo yobushushu bobushushu obuphezulu
Ujongano olubanjwe yi-adsorption ebonakalayo lusilela ngokulula phantsi kokuvezwa kobushushu obuphezulu bexesha elide, kubangela ugqithiselo oluncamathelayo olupheleleyo kwizinto zokusebenza kunye nomphezulu welaphu we-PTFE ongenanto. Ngokwahlukileyo, iileya ze-anchoring zemichiza ezenziwe ngokuvuthwa kobushushu obuphezulu zisusa ngokuthembekileyo imingcipheko enjalo.
III. IiNtsalela zeMolekyuli ePhantsi kunye nokuguquguquka kobushushu obuphezulu
1. Ukuvuthwa okuphezulu kobushushu: Ukususwa okwaneleyo kokungcola ngaphambi kokunikezelwa
Inkqubo yokuvuthwa kobushushu obuphezulu busebenza njengenqanaba elicokisekileyo lokuhlanjululwa, eliphantse lisuse izinto eziguquguqukayo ezibandakanya i-catalysts, i-oyile ye-silicone ephantsi kunye ne-reaction byproducts. Umaleko wokuncamathelisa ogqityiweyo uhlala ucocekile kunye nokukhutshwa okuguquguqukayo okungafunekiyo ngexesha lokusetyenziswa kokuphela.
2. Ukuvuthwa kobushushu begumbi: Izinto ezinkulu eziphantsi kweemolekyuli ezivaleleke ngaphakathi
Amacandelo aphantsi-molekyuli ahlala etywinwe ngaphakathi kwe-adhesive matrix kwiqondo lokushisa. Xa i-tape iqala ukubonakaliswa kumaqondo okushisa angaphezu kwe-200 ° C, ezi zinto ziguquguquka ngokukhawuleza kwaye zanda ngokukhawuleza.
3. Iimpembelelo ezitshabalalisayo kuzinzo
I-volatilization egxininisiweyo yeekhompawundi ze-molekyuli ephantsi ibangela ukugqabhuka, ukudumba kunye nokulahleka okubukhali kwiteyiphu. Isenokushiya amabala e-oyile ye-silicone kwiimveliso ezitywinwe ubushushu emva kwemvula yobushushu obuphezulu. Ke ngoko, iteyiphu yobushushu begumbi ibonakalisa ukusebenza okungazinzanga ekufudumezeni kokuqala, kusilela kwimigangatho engqongqo yokucoceka kombane, ukupakishwa kokutya kunye namanye amashishini achanekileyo.
1. Ukuvuthwa kobushushu obuphezulu: Imeko ezinzileyo ye-Thermodynamically ekuhanjisweni
Ukuvuthwa kobushushu obuphezulu kuqhuba ukuhlangana kweempendulo phantse ekugqityweni, ngoko ke iiteyiphu ziwushiya umzi-mveliso unemilinganiselo yokusebenza ezinzileyo. Iimpawu ezibalulekileyo ezifana namandla e-peel kunye nokubamba amandla ahlala engaguquguquki kuwo wonke umjikelo wenkonzo, ngaphandle kokushwabana okucacileyo kwasemva kokunyanga, ukuqina okanye ukuguquguquka komgangatho, ukuhambisa ukusebenza okuqikelelweyo okuphezulu.
2. Ukuvuthwa kwegumbi lobushushu: Ukuvuthwa kwesibini okuqhubekayo ngexesha lenkonzo
Iteyiphu epholileyo yegumbi-ubushushu ifumana iimpendulo ezingaphelelanga xa ibhengezwe kumaqondo obushushu aphezulu kwindawo yomthengi. Ukuqina ngokuthe ngcembe kunye nokuphazamiseka kwenzeka ngokuhamba kwexesha; Amandla e-peel anyuka kuqala emva koko ehle kakhulu, kwaye i-tack inokulahleka ngokupheleleyo kwiimeko ezinzima.
3. Uthelekiso olubanzi lokuthembeka kwenkonzo
Ukuzuza kwizakhiwo zeekhemikhali ezizinzile, i-tape ephezulu yokushisa evuthwayo igcina amandla abalaseleyo okubamba phantsi kweemeko zokusebenza eziqhubekayo ze-260 ° C, ukuchasana ne-sliding kunye ne-edge curling. Ukusebenza kwegumbi-lobushushu obuvuthiweyo kwi-tape drifts ngokuqhubekayo, okwenza iinkqubo zemveliso eziqhubekayo zingenakwenzeka. Umahluko ongundoqo ulele ekuvuthweni okuphezulu kobushushu kugqiba zonke iinguqu ezingazinzanga zeekhemikhali ngaphambi kokunikezelwa, ukuqinisekisa ukuthembeka okuphezulu kokusebenza kubasebenzisi bokugqibela.
Lo mxholo wobugcisa ungentla unikwe ngu I-Jiangsu Aokai yeZixhobo eziNtsha zeTekhnoloji Co., Ltd.
Ukuba ufuna ukufumana iinkcukacha ezicacileyo, iimeko zesicelo kunye nezisombululo ezilungiselelwe ipotifoliyo yethu epheleleyo yemveliso kuquka i-PTFE ilaphu elinobushushu obuphezulu, i-PTFE iteyiphu yokuncamathela yobushushu obuphezulu, i-PTFE yebhanti ye-mesh enobushushu obuphezulu, ibhanti lokucinezela ubushushu obungenamthungo, ilaphu le-PTFE elinecala elinye, ubushushu obuphezulu obunganyangekiyo kunye ne-fiberglass ekwazi ukumelana nobushushu
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