MQ Resin: Ku namarhela ka PSA ka Methyl/Phenyl & Mw

Jiangsu Aokai New Materials , muendli lonkulu wa thepi ya mahiselo ya le henhla ya PTFE, u ku nyika nxopaxopo wa xithekiniki wa xiphurofexinali.

Polarity, steric hindrance ya mintlawa ya organic na xivumbeko xa aggregation xa ti molecular chains eka MQ silicone resin i swilo swa nkoka ku lawula performance balance ya silicone pressure-sensitive adhesives (PSA).Hi ku komisa: ku engetela phenyl content swi antswisa tack yo sungula, matimba yo khoma na matimba ya peel hi nkarhi wun’we; loko molecular weight na molecular weight distribution swilandzela nawu lowu tolovelekeke wa seesaw — molecular weight yale henhla yi antswisa matimba yo khoma kambe yi endla magandzelo hi tack yosungula; ku hangalasiwa ka ntiko wa molekhuli wo anama i ndlela leyi tirhaka yo ringanisela swivumbeko swinharhu swa nkoka swa namarheta.

1. Methyl / Phenyl Ratio: Ku lulamisiwa ka Matirhelo ya le Ndzeni hi ku tirhisa Xivumbeko xa Tikhemikhali

Ku cinca xiphemu xa mintlawa ya methyl (-CH3) hi mintlawa ya phenyl (-C6H5) i ndlela leyi tirhaka ya ku cinca ka xiyimo xa molekhuli:

·  Matimba ya le xikarhi ka timolekhuli lama antswisiweke : Ring ya benzene yi humesa ku tirhisana loku tiyeke ka π-π exikarhi ka timolekhuli, leswi tlakusaka swinene matimba yo hlangana ya xinamarheti, leswi hi xisekelo swi antswisaka matimba yo khoma na matimba ya ku rhurhumela.

·  Ku engeteleka ka molecular chain rigidity : Mintlawa ya phenyl yina xihinga lexikulu xa steric, leswi sivelaka ku rhendzeleka ka ti silicone main chains xikan’we naku hunguta ku olova ka chain. Leswi swi vuyerisa ku khoma matimba kambe switala ku tsanisa tack yosungula.

·  Ku antswisiwa ka ku tsakama : Ku cinciwa ka phenyl swi ndlandlamuxa ku yelana ka silicone PSA eka swiphemu swa substrate, swi hlohletela ku hlanganisiwa ka interfacial, naswona swi antswisa matimba yo sungula ya tack na peel.

2. Ndzilo wa Molekhuli & Ku hangalasiwa: Nawumbisi wa Matirhelo hi ku tirhisa Physical Entanglement & Aggregation State

Mintlawa ya ntirho yi lawula vulawuri bya tikhemikhali , kasi ntiko wa molekhuli na ku hangalasiwa ka ntiko wa molekhuli (Polydispersity Index, PDI) swi lawula vulawuri bya nyama :

Ndzilo wa Molekhuli (Mw) .

Matimba ya cohesive ngopfu ngopfu ya huma eka physical entanglement ya ti polymer chains.

·  Mw yale henhla yi endla netiweke ya entanglement yo enta naswona yi antswisa swinene matimba yo khoma.

·  Mw yale henhla swinene yi endla leswaku ti molecular chains ti tiya naswona tinga olovi ngopfu, leswi endlaka leswaku kuhunguteka matimba yosungula ya tack na peel.

Ku hangalasiwa ka Ndzilo wa Molekhuli (MWD) .

·  Ku hangalasiwa ko koma : Ku tirha loku fanaka, ku olova loku kongomisiweke eka ku antswisiwa ka nhundzu yin’we ku fana na tack yo sungula ya le henhla.

·  Ku hangalasiwa hi ku anama : Ku fambelanisiwa ka matirhelo yo tatisela. Swiphemu swa ntiko wa timolekhuli ta le henhla swi endla marhambu ya network yo tiya ku tiyisisa matimba yo hlangana na matimba yo khoma; swiphemu swa molecule yale hansi switirha tani hi switolwa swale ndzeni xikan’we na swihatlisisi swo tsakamisa, leswi antswisaka ku fambafamba ka chain xikan’we naku tsakamisa ka le henhla hiku hatlisa ku tiyisisa tack yosungula ya kahle, ku fikelela matirhelo hinkwawo lawa ya ringaniseriweke.

3. Ku antswisiwa ka Ntirhisano ka M/Q Ratio, Mpimo wa Resin na Viscosity ya Raba ya Silicone

Methyl/phenyl ratio na molecular weight swi veka swihlawulekisi swa ntumbuluko swa MQ resin; kasi M/Q ratio, resin kuya eka silicone rubber ratio na silicone rubber viscosity i ti parameters to lulamisa hiku kongoma eka formula engineering, leswi faneleke ku fambelanisiwa hi synergistically.

Xiringaniso xa M/Q

M/Q ratio hi ku kongoma yi boha ntiko wa molekyuli, nhlayo ya hydroxyl na ku fambisana na rhaba ya silicone.M/Q molar ratio leyinene ya silicone PSA hi ntolovelo i 0.6 ~ 1.2 .Xikombiso, medical-grade PSA yi amukela ntikelo wa kahle wa M/Q wa kwalomu ka 0.78; resin leyingana M/Q 0.6–0.9 leyi hlanganisiweke na rhaba ya silicone (viscosity 100×10−4 m²/s) eka mass ratio ya 2:3 yikuma matirhelo ya kahle swinene yo namarhela hiku hetiseka.

Xiringaniso xa ku Hlanganisa ka Raba ya Resin / Silicone

Ratio leyi i lever ya nkoka ku ringanisela swivumbeko swinharhu swa nkoka (tack yosungula, matimba yo khoma, matimba ya peel).

·  Nhlayo yale henhla ya resin yi antswisa ku hlangana, matimba yo khoma xikan’we na matimba ya peel kambe yi hunguta tack yosungula.

·  Nhlayo yale henhla ya rhaba yikombisa ntshamiseko lowu hambaneke.

Xikombiso, ku tlakusa mass ratio ya MQ resin kuya eka 107 silicone rubber kusuka eka 1.2 kuya eka 2.5 swita engetela matimba yo khoma xikan’we na 180° peel strength loko swihunguta ekusunguleni tack.Eka swivumbeko leswi tirhaka, mpimo wa vukulu bya silicone resin eka rhaba ya silicone hi ntolovelo i 45:55 ~ 75:25.

Ku tsindziyela ka Raba ya Silicone

Ndzilo wa molecular lowu kombisiwaka hi viscosity wu boha swivumbeko swa xisekelo swa rheological swa sisiteme ya adhesive naswona wu lava ku fambisana kahle na MQ resin.Low-viscosity silicone rubber yina ku fambisana ko antswa na MQ resin, leyi tsakeriwaka eka tack yosungula na matimba ya peel, kambe yinga kavanyeta matimba yo khoma.

4. Nsinya wa Nawu wa Dizayini ya Fomula ya ku Ringanisela ka Matirhelo

Eka silicone PSA formulation design, ti index tinharhu ta nkoka — tack yosungula, matimba yo khoma, 180° peel strength  — tinga lawuriwa kahle hi tindlela timbirhi ta core:

·  Phenyl modification — multiplicative optimization : Phenyl doping leyi faneleke yi antswisa swivumbeko hinkwaswo swinharhu hi nkarhi wun’we, ku tlula xipimelo xa ndhavuko xa seesaw.

·  Molecular weight & distribution adjustment — additive trade-off : Vulawuri lebyi kongomeke bya ntiko wa molecular na ku hangalasiwa byi lemuka ku ringanisela loku endleriweke exikarhi ka tack yo sungula na matimba yo khoma eka swiyimo swo hambana swa ku tirhisiwa.

Eka vuhumelerisi bya ti indasitiri, maqhinga ya fomula lawa ya tolovelekeke i broad molecular weight distribution base resin plus moderate phenyl modification  ku ringanisela processability na comprehensive adhesion performance.For ultra-high temperature resistance xikan’we na tindzhawu to tika ta tikhemikhali, high-phenyl-content MQ resin i xitshunxo lexi tsakeriwaka.

Vuxokoxoko bya xithekiniki lebyi nga laha henhla byi nyikiwile hi Jiangsu Aokai New Materials Technology Co., Ltd.

Loko u lava ku tiva tipharamitha ta vuxokoxoko, swiyimo swa xikombelo na swintshuxo leswi endleriweke layini ya hina ya swikumiwa leswi heleleke: PTFE lapi ra mahiselo ya le henhla, thepi ya mahiselo ya le henhla ya PTFE, bandi ra mesh ra mahiselo ya le henhla ya PTFE, bandi ra muchini wo fusa leri nga riki na swirhabyani, lapi ra PTFE ra tlhelo rin’we, bandi ra conveyor leri tiyiselaka mahiselo ya le henhla na lapi ra fiberglass leri tiyiselaka mahiselo ya le henhla, hi kombela u hi tihlanganisa na hina:

·  Tatana Guo: +86 18944819998

·  Nkulukumba Liu: +86 13705266308

Minkarhi hinkwayo hi namarhela filosofi ya vutshila na vutshembeki, naswona hi ku nyika swintshuxo swa tiindasitiri swa xiyimo xin’we na vukorhokeri lebyi ehleketiweke.