MQ Resin: Methyl/Phenyl & Mw Impact PSA Adhesion

I-Jiangsu Aokai New Materials , umenzi ohamba phambili we-PTFE iteyiphu yobushushu obuphezulu, ikunika uhlalutyo lobuchwephesha lobuchwephesha.

I-polarity, isithintelo se-steric samaqela e-organic kunye nesakhiwo sokuhlanganiswa kwamaketanga e-molecular kwi-resin ye-silicone ye-MQ zizinto eziphambili zokulawula ibhalansi yokusebenza kwe-silicone i-adhesive-sensitive adhesives (PSA) .Ngamafutshane: ukwanda komxholo we-phenyl kwandisa i-tack yokuqala, ukubamba amandla kunye namandla e-peel ngaxeshanye; ngelixa ubunzima bemolekyuli kunye nokusabalalisa ubunzima be-molecular bulandela umgaqo we-seesaw oqhelekileyo - ubunzima obuphezulu be-molecular buphucula amandla okubamba kodwa kubingelela i-tack yokuqala; ukusabalalisa ubunzima bemolekyuli ebanzi yindlela esebenzayo yokulungelelanisa izinto ezintathu eziphambili zokubambelela.

1. Umlinganiselo weMethyl / Phenyl: Ulungelelwaniso lweNtsebenzo lwangaphakathi ngeMichiza yoLwakhiwo

Ukutshintsha inxalenye yamaqela e-methyl (-CH3) kunye namaqela e-phenyl (-C6H5) yindlela esebenzayo yokuguqula i-molecular-level:

·  Ukomelezwa kwamandla e-intermolecular : Iringi ye-benzene ivelisa intsebenziswano eyomeleleyo π-π intermolecular, iphakamisa kakhulu amandla adityanisiweyo okuncamathelayo, nto leyo ephucula kakhulu ukubamba amandla kunye namandla okuxobula.

·  Ukunyuka kokuqina kwe-molecular chain : Amaqela e-Phenyl anesithintelo esikhulu se-steric, esithintela ukujikeleza kwamakhonkco aphambili e-silicone kunye nokunciphisa ukuguquguquka kwekhonkco. Oku kunceda ukubamba amandla kodwa kuthanda ukwenza buthathaka tack yokuqala.

·  Ukuphuculwa kokumanzisa : Ukuguqulwa kwePhenyl kwandisa ukuhambelana kwe-silicone ye-PSA kwi-substrate surfaces, ikhuthaza ukuhlangana kwe-interfacial, kwaye iphucula zombini i-tack yokuqala kunye namandla e-peel.

2. Ubunzima beMolekyuli kunye noSasazo: uMmiselo wokuSebenza ngokuBambisana ngokwaseMzimbeni kunye noBume be-Aggregation

Amaqela asebenzayo alawula ukulawulwa kweekhemikhali , ngelixa ubunzima bemolekyuli kunye nokusabalalisa ubunzima bemolekyuli (i-Polydispersity Index, PDI) ilawula umgaqo womzimba :

Ubunzima beMolekyuli (Mw)

Amandla abambeneyo avela ikakhulu ekubanjweni ngokwasemzimbeni kwamatyathanga epolymer.

·  IMw ePhezulu yenza uthungelwano oluxineneyo olubambekayo kwaye iphucula ngokubonakalayo amandla okubamba.

·  Ukuphakama ngokugqithisileyo kweMw kwenza amatsheyina emolekyuli aqine kwaye angabi bhetyebhetye kakhulu, okukhokelela ekucuthekeni kokuqala kunye namandla okuxobula.

Ukusasazwa kobunzima beMolekyuli (MWD)

·  Unikezelo olumxinwa : Ukusebenza ngendlela efanayo, ukulungelelaniswa okulula okujoliswe kuko kwipropathi enye enje ngeteki yokuqala ephezulu.

·  Usasazo olubanzi : Ungqamaniso lwentsebenzo ehambelanayo. Amaqhezu aphezulu emolekyuli enza i-network skeleton eqinile ukuqinisekisa amandla adibeneyo kunye nokubamba amandla; amaqhezu anobunzima obuphantsi bemolekyuli asebenza njengezithambisi zangaphakathi kunye ne-accelerators yokumanzisa, ukuphucula ukuhamba kwekhonkco kunye nokumanzisa okukhawulezileyo komhlaba ukuze kuqinisekiswe ukuthotyelwa kokuqala, ukufezekisa ukusebenza okulinganayo ngokubanzi.

3. I-Synergistic Optimization ye-M/Q Ratio, i-Resin Dosage kunye ne-Silicone Rubber Viscosity

Umlinganiselo weMethyl/phenyl kunye nobunzima bemolekyuli bumisela iipropathi zendalo ze-MQ resin; ngelixa umlinganiselo we-M / Q, umlinganiselo we-resin kwi-rubber ye-silicone kunye ne-viscosity ye-rubber ye-silicone yimilinganiselo yokulungelelanisa ngokuthe ngqo kubunjineli befomula, ekufuneka ihambelane ne-synergistically.

Umlinganiselo we-M/Q

Umlinganiselo we-M / Q unquma ngokuthe ngqo ubunzima be-molecular, umxholo we-hydroxyl kunye nokuhambelana ne-rubber ye-silicone.I-M / Q ye-molar ratio ye-silicone ye-PSA ngokuqhelekileyo i- 0.6 ~ 1.2 .Ngokomzekelo, i-PSA ye-medical-grade ithatha ixabiso elichanekileyo le-M / Q malunga ne-0.78; i-resin ene-M/Q 0.6–0.9 edityaniswe nerubha ye-silicone (i-viscosity 100×10⁻⁴ m²/s) kumlinganiselo wobunzima be-2:3 ifumana ukusebenza kakuhle okuncamatheleyo okubanzi.

I-Resin / i-Silicone Rubber Blending Ratio

Lo mlinganiselo uyisitshixo esingundoqo sokulinganisela iimpawu ezintathu eziphambili (i-tack yokuqala, ukubamba amandla, amandla e-peel).

·  Umxholo we-resin ophezulu uphucula ukuhambelana, ukubamba amandla kunye namandla axobileyo kodwa kunciphisa i-tack yokuqala.

·  Umxholo werabha ophezulu ubonisa indlela eyahlukileyo.

Umzekelo, ukuphakamisa umlinganiselo we-MQ resin ukuya kwi-107 silicone irabha ukusuka kwi-1.2 ukuya kwi-2.5 kuya kwandisa amandla okubamba kunye ne-180 ° amandla e-peel ngelixa unciphisa ukuqala. Kwizinto eziphathekayo, umlinganiselo we-silicone resin kwirubha ye-silicone udla ngokuba ngu- 45:55 ~ 75:25..

I-Silicone Rubber Viscosity

Ubunzima bemolekyuli obubonakaliswe yi-viscosity bumisela iipropati ezisisiseko ze-rheological zenkqubo yokuncamathelisa kwaye ifuna ukuhambelana kakuhle ne-MQ resin.I-rubber ye-silicone ye-viscosity ephantsi inokuhambelana okungcono kunye ne-MQ resin, ilungele ukuqala kunye namandla e-peel, kodwa ingaphazamisa amandla okubamba.

4. UMmiselo woYilo lweFomula yoLungelelaniso lweNtsebenzo

Kuyilo lwe-silicone ye-PSA yokuqulunqa, izalathisi ezintathu eziphambili- i-tack yokuqala, ukubamba amandla, i-180 ° amandla e-peel  -inokulawulwa ngokuchanekileyo ngeendlela ezimbini eziphambili:

·  Ukuguqulwa kwePhenyl — ukuphindaphinda okuphindaphindwayo : I-phenyl doping eyiyo iphucula zonke iipropathi ezintathu ngaxeshanye, ukwaphula uthintelo lweeseesaw zemveli.

·  Ubunzima bemolekyuli kunye nohlengahlengiso lokusasazwa — urhwebo olongezelelweyo : Ulawulo oluchanekileyo lobunzima bemolekyuli kunye nokuhanjiswa kuqondanisa ibhalansi elungelelanisiweyo phakathi kokuthotywa kokuqala kunye nokubamba amandla kwiimeko ezahlukeneyo zesicelo.

Kwimveliso yoshishino, isicwangciso sefomyula eqhelekileyo sibanzi se-molecular weight distribution base-resin kunye ne-moderate phenyl modification  to balance processability and comprehensive adhesion performance.For ultra-high high temperature resistance and harsh chemical environments, high-phenyl-content MQ resin yisisombululo esithandwayo.

Lo mxholo wobugcisa ungentla unikwe nguJiangsu Aokai New Materials Technology Co., Ltd.

Ukuba ufuna ukwazi iparameters eneenkcukacha, iimeko zesicelo kunye nezisombululo ezilungiselelwe umgca wethu wemveliso epheleleyo: Ilaphu le-PTFE elinobushushu obuphezulu, iteyiphu yobushushu obuphezulu be-PTFE, ibhanti le-mesh elinobushushu obuphezulu be-PTFE, ibhanti lomatshini wokudibanisa elingenamthungo, ilaphu le-PTFE elinecala elinye, i-high-temperature resistant conveyor ibhanti, i-fiberglass enganyangekiyo, nceda uthintele i-fiberglass.

·  UMnu Guo: +86 18944819998

·  UMnu Liu: +86 13705266308

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