MQ Resin: Methyl/Phenyl & Mw Impact PSA Adhesion

Jiangsu Aokai Zvishandiso Zvitsva , mugadziri anotungamira wePTFE yepamusoro-tembiricha tepi, anokupa hunyanzvi hwekuongorora tepi.

Iyo polarity, steric chipingamupinyi che organic mapoka uye aggregation chimiro chema molecular cheni muMQ silicone resin ndizvo zvinhu zvakakosha zvekugadzirisa kuenzanisa kwekuita kwesilicone pressure-sensitive adhesives (PSA) . nepo uremu hwemamorekuru uye kugoverwa kwehuremu kunotevera mutemo wakajairwa wemasaw - yakakwira molecular uremu inovandudza kubata simba asi inobayira yekutanga tack; yakafara molecular huremu kugovera inzira inoshanda yekuenzanisa zvinhu zvitatu zvakakosha zvekunamira.

1. Methyl / Phenyl Ratio: Intrinsic Performance Adjustment kuburikidza neChemical Structure

Kutsiva chikamu chemapoka emethyl (-CH3) nemapoka ephenyl (-C6H5) inzira inoshanda yekuchinja kwema molecular-level:

·  Enhanced intermolecular force : Mhete yebenzene inogadzira kupindirana kwakasimba π-π intermolecular, inosimudza zvakanyanya simba rakabatana rekunamatira, iro rinonyanya kunatsiridza kubata simba uye kusvuura simba.

·  Kuwedzera kwema molecular chain rigidity : Phenyl mapoka ane hombe steric chipingamupinyi, inorambidza kutenderera kwesilicone main cheni uye kuderedza kushanduka kweketani. Izvi zvinobatsira kubata simba asi zvinowanzo netesa tack yekutanga.

·  Kuvandudzwa kwekunyorova : Phenyl gadziriso inokwidziridza hukama hwesilicone PSA kune substrate nzvimbo, inosimudzira kubatana kwechiso, uye inovandudza ese ekutanga tack uye peel simba.

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

Mapoka anoshanda anotonga mutemo wemakemikari , nepo huremu hwemamorekuru uye huremu hwekugovera (Polydispersity Index, PDI) inotonga mutemo wemuviri :

Molecular Weight (Mw)

Simba rakabatana rinonyanya kubva mukusungwa kwepolymer cheni.

Yepamusoro  Mw inoumba denser entanglement network uye inovandudza zvakanyanya simba rekubata.

Kunyanya  kuwanda kweMw kunoita kuti cheni dzemamolecular dziome uye dziite shoma, zvichikonzera kudzikiswa kwekutanga kusimba uye kusvuura simba.

Molecular Weight Distribution (MWD)

·  Kugovera kwakatetepa : Kuita kwakafanana, nyore kunanga optimization kune imwechete pfuma senge yakakwira yekutanga tack.

·  Kugovera kwakakura : Kuwedzeredza kuita kwekuenzanisa. High-molecular-uremu zvikamu zvinoumba rigid network skeleton kuvimbisa kusimba kwakabatana uye kubata simba; low-molecular-weight fractions inoshanda semafuta emukati uye wetting accelerators, kuvandudza cheni yekufamba uye kukurumidza kunyorova pamusoro kuti ive nechokwadi chakanaka chekutanga tack, kuwana chiyero chese kuita basa.

3. Synergistic Optimization yeM/Q Ratio, Resin Dosage uye Silicone Rubber Viscosity

Methyl/phenyl chiyero uye huremu hwemamorekuru hunotarisisa hunhu hweMQ resin; nepo M/Q reshiyo, resin kune silicone rabha reshiyo uye silicone rubber viscosity iri yakananga kugadzirisa paramita muforoma engineering, iyo inofanirwa kufananidzwa synergistically.

M/Q Reshiyo

M / Q chiyero inotarisa zvakananga huremu hwema molecular, hydroxyl content uye kuenderana nesilicone rubber.The optimal M / Q molar ratio yesilicone PSA inowanzoita 0.6 ~ 1.2 .Somuenzaniso, yezvokurapa-grade PSA inotora M / Q yakakosha inenge 0.78; resin ine M/Q 0.6–0.9 yakasanganiswa nesilicone rubber (viscosity 100 × 10⁻⁴ m²/s) pachiyero chehuwandu hwe2: 3 inowana yakanakisa yakazara inonamira kuita.

Resin / Silicone Rubber Blending Ratio

Iyi chiyero ndiyo kiyi lever yekuenzanisa iyo mitatu yakakosha zvivakwa (yekutanga tack, kubata simba, peel simba).

·  Yepamusoro resin yemukati inovandudza kubatana, kubata simba uye kusvuura simba asi inoderedza yekutanga tack.

·  Yepamusoro rabha yemukati inoratidza zvinopesana.

Semuyenzaniso, kusimudza huwandu hweMQ resin kusvika 107 silicone rabha kubva pa1.2 kusvika 2.5 kuchawedzera simba rekubata uye 180 ° kusvuura simba uchidzikira pekutanga. Mumagadzirirwo anoshanda, huwandu hwehuwandu hwesilicone resin kune silicone rabha inowanzo 45:55 ~ 75:25..

Silicone Rubber Viscosity

Iyo molecular uremu inoratidzwa ne viscosity inosarudza iyo yakakosha rheological maitiro eiyo adhesive system uye inoda kuenderana kwakanaka neMQ resin.Low-viscosity silicone rubber ine zvirinani kuwirirana neMQ resin, inofarirwa kwekutanga tack uye peel simba, asi inogona kukanganisa kubata simba.

4. Formula Design Principle yePerformance Balance

Musilicone PSA yekugadzira dhizaini, iwo matatu makiyi indexes - ekutanga tack, akabata simba, 180 ° peel simba  - anogona kunyatsogadziriswa nenzira mbiri dzakakosha:

·  Phenyl gadziriso — kuwanda optimization : Yakafanira phenyl doping inovandudza ese matatu zvivakwa panguva imwe chete, kutyora tsika yechinyakare kurambidzwa seesaw.

·  Molecular huremu & gadziriso yekugovera - yekuwedzera kutengeserana-kubvisa : Kudzora chaiko kwehuremu hwemamorekuru uye kugovera kunoona chiyero chakagadziridzwa pakati pekutanga tack uye kubata simba kune akasiyana mashandisirwo mamiriro.

Mukugadzirwa kwemaindasitiri, iyo yakajairika fomula zano ndeye yakakura mamorekuru uremu hwekugovera base resin pamwe nepakati phenyl gadziriso  kuti ienzanise processability uye yakazara adhesion performance.Kuti-yepamusoro-yepamusoro tembiricha kuramba uye hutsinye hwemakemikari nharaunda, yakakwira-phenyl-zviri MQ resin ndiyo inosarudzwa mhinduro.

Izvo zviri pamusoro pehunyanzvi zvemukati zvinopihwa neJiangsu Aokai New Materials Technology Co., Ltd.

Kana iwe uchida kuziva yakadzama paramita, mamiriro ekushandisa uye zvigadziriso zvakagadziridzwa zvechigadzirwa mutsara wedu: PTFE yakakwirira-tembiricha jira, PTFE yakakwirira-tembiricha tepi, PTFE yakakwirira-tembiricha mesh bhandi, isina musono fusing muchina bhandi, single-sided PTFE jira, yakakwirira-tembiricha inodzivirira conveyor bhandi, ndapota inopesana nefiberglass bhandi

·  Mr. Guo: +86 18944819998

·  Mr. Liu: +86 13705266308

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