MQ Resin: Methyl / Phenyl & Mw Impact PSA Adhesion

Jiangsu Aokai Cov Khoom Tshiab , cov chaw tsim khoom ntawm PTFE high-temperature daim kab xev, muab koj cov kws tshaj lij kev soj ntsuam.

Lub polarity, steric hindrance ntawm cov organic pawg thiab aggregation qauv ntawm molecular chains nyob rau hauv MQ silicone resin yog lub hauv paus ntsiab lus los tswj cov kev ua tau zoo tshuav nyiaj li cas ntawm silicone siab-rhiab nplaum nplaum (PSA). thaum molecular hnyav thiab molecular hnyav tis ua raws li ib tug raug saws saws - siab dua molecular hnyav txhim kho tuav lub hwj chim tab sis txi pib tack; broad molecular hnyav tis yog ib txoj hauv kev zoo los sib npaug ntawm peb lub ntsiab lus nplaum.

1. Methyl / Phenyl Ratio: Intrinsic Performance Adjustment of Chemical Structure

Hloov ib feem ntawm methyl pawg (-CH3) nrog phenyl pawg (-C6H5) yog ib qho kev hloov kho molecular-theem:

·  Enhanced intermolecular force : Lub nplhaib benzene tsim muaj zog π-π intermolecular kev sib cuam tshuam, zoo heev tsa lub zog cohesive ntawm cov nplaum, uas pab txhim kho kev tuav lub zog thiab tev lub zog.

·  Ntxiv molecular saw rigidity : Phenyl pawg muaj loj steric hindrance, txwv txoj kev sib hloov ntawm silicone lub ntsiab chains thiab txo cov saw yooj. Qhov no muaj txiaj ntsig tuav lub zog tab sis zoo li tsis muaj zog thaum pib tack.

·  Txhim kho wettability : Phenyl hloov kho txhim khu kev sib raug zoo ntawm silicone PSA rau substrate nto, txhawb kev sib txuas ntawm lub ntsej muag, thiab txhim kho ob qho tib si thawj zaug tack thiab tev lub zog.

2. Molecular Weight & Distribution: Performance Regulation of Physical Entanglement & Aggregation State

Cov pab pawg ua haujlwm tswj hwm kev tswj hwm tshuaj , thaum lub cev hnyav thiab molecular yuag faib (Polydispersity Index, PDI) ua tus tswj lub cev :

Molecular Luj (Mw)

Cohesive zog feem ntau yog los ntawm lub cev entanglement ntawm polymer chains.

·  Siab dua Mw tsim ib lub denser entanglement network thiab txhim khu kev tuav hwj chim.

·  Mw siab heev ua rau cov saw hlau molecular nruj thiab tsis yooj yim, ua rau txo qis thawj zaug tack thiab tev lub zog.

Molecular Weight Distribution (MWD)

·  Kev faib me me : kev ua haujlwm tsis zoo, kev ua kom zoo tshaj plaws rau ib qho khoom xws li kev sib tw siab.

·  Kev faib tawm dav : Kev ua tau zoo sib xws. High-molecular-hnyav feem ntau tsim cov pob txha pob txha pob txha kom lav lub zog cohesive thiab tuav lub zog; Tsawg-molecular-hnyav fractions ua raws li cov roj lubricants sab hauv thiab ntub dej accelerators, txhim kho cov kev txav mus los thiab ceev nrooj ntub dej kom ntseeg tau tias qhov pib zoo, ua tiav tag nrho cov kev ua haujlwm sib luag.

3. Synergistic Optimization ntawm M / Q piv, Resin Dosage thiab Silicone Rubber Viscosity

Methyl / phenyl piv thiab molecular hnyav txiav txim qhov khoom ntawm MQ cob; Thaum M / Q piv, resin rau silicone roj hmab piv thiab silicone roj hmab viscosity yog ncaj qha kho tsis nyob rau hauv cov mis engineering, uas yuav tsum tau sib txuam synergistically.

M/Q ratio

M / Q piv ncaj qha txiav txim siab qhov hnyav molecular, cov ntsiab lus hydroxyl thiab kev sib raug zoo nrog cov roj hmab silicone.Qhov zoo tshaj plaws M / Q molar piv rau silicone PSA feem ntau yog 0.6 ~ 1.2 .Piv txwv li, kev kho mob qib PSA txais qhov zoo M / Q tus nqi ntawm txog 0.78; resin nrog M / Q 0.6-0.9 compounded nrog silicone roj hmab (viscosity 100 × 10⁻⁴ m² / s) ntawm qhov sib piv ntawm 2: 3 tau txais kev ua haujlwm zoo heev.

Resin / Silicone Rubber Blending Ratio

Qhov kev sib piv no yog qhov tseem ceeb ntawm qhov sib npaug ntawm peb lub zog (thawj tack, tuav lub zog, tev lub zog).

·  Cov ntsiab lus resin ntau dua txhim kho kev sib koom ua ke, tuav lub zog thiab tev lub zog tab sis txo qis thawj zaug.

·  Cov ntsiab lus roj hmab siab dua qhia qhov sib txawv.

Piv txwv li, nce qhov loj ntawm MQ resin rau 107 silicone roj hmab los ntawm 1.2 mus rau 2.5 yuav ua rau kom tuav lub zog thiab 180 ° tev lub zog thaum pib poob. tack.Nyob rau hauv cov qauv tsim, qhov loj piv ntawm silicone resin rau silicone roj hmab feem ntau yog 45: 55 ~ 75: 25.

Silicone Roj Hmab Viscosity

Qhov hnyav molecular uas cuam tshuam los ntawm viscosity txiav txim siab cov yam ntxwv rheological ntawm cov nplaum nplaum thiab xav tau kev sib raug zoo nrog MQ resin.Low-viscosity silicone roj hmab muaj kev sib raug zoo nrog MQ resin, zoo rau thawj zaug tack thiab tev lub zog, tab sis tuaj yeem cuam tshuam tuav lub zog.

4. Cov qauv tsim qauv rau kev ua haujlwm sib npaug

Hauv silicone PSA formulation tsim, peb qhov tseem ceeb indexes - pib tack, tuav lub zog, 180 ° tev lub zog  - tuaj yeem tswj hwm los ntawm ob lub ntsiab lus:

·  Phenyl hloov kho — ntau qhov kev ua kom zoo dua : Zoo phenyl doping txhim kho tag nrho peb lub zog ib txhij, rhuav tshem cov tsoos pom kev txwv.

·  Molecular weight & tis adjustment — additive trade-off : Precise control of molecular weight and tis realizes customized tshuav nyiaj li cas ntawm thawj tack thiab tuav lub hwj chim rau txawv daim ntawv thov scenarios.

Hauv kev tsim khoom, cov qauv tsim qauv yog dav molecular hnyav faib hauv paus resin ntxiv rau nruab nrab phenyl hloov kho  kom sib npaug ntawm cov txheej txheem thiab kev ua tiav adhesion.Rau ultra-siab kub tsis kam thiab hnyav tshuaj ib puag ncig, high-phenyl-cov ntsiab lus MQ resin yog cov kev daws teeb meem.

Cov ntsiab lus saum toj no yog muab los ntawm Jiangsu Aokai New Materials Technology Co., Ltd.

Yog tias koj xav paub cov ncauj lus kom ntxaws, daim ntawv thov scenarios thiab cov kev daws teeb meem rau peb cov khoom lag luam tag nrho: PTFE high-temperature npuag, PTFE high-temperature tape, PTFE high-temperature mesh belt, seamless fusing machine belt, single-sided PTFE fabric, high-temperature resistant conveyor belt thiab high-temperature fabric, contact us fiberglass resistant.

·  Mr. Guo: +86 18944819998

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Peb ib txwm ua raws li lub tswv yim ntawm kev tshaj lij thiab kev ncaj ncees, thiab muab kev daws teeb meem rau koj ib leeg thiab kev xav zoo.