MQ Resin: Methyl/Phenyl & Mw Mmetụta PSA Adhesion

Jiangsu Aokai New Materials , onye na-emepụta ihe na-emepụta PTFE elu-okpomọkụ teepu, na-enye gị ọkachamara nkà na ụzụ analysis.

The polarity, steric mgbochi nke organic iche iche na aggregation Ọdịdị nke molekul chains na MQ silicone resin bụ isi ihe na-achịkwa arụmọrụ itule nke silicone mgbali-sensitive adhesives (PSA) .Na nkenke: ịba ụba phenyl ọdịnaya optimizes mbụ tack, ijide ike na bee ike n'out oge; mgbe molecular arọ na molekụla arọ nkesa na-eso a ahụkarị seesaw iwu - elu molekul arọ mma ejide ike ma àjà mbụ tack; Nkesa arọ molekụla sara mbara bụ ụzọ dị irè isi dozie njirimara nrapado isi atọ ahụ.

1. Methyl / Phenyl Ratio: Mgbanwe arụmọrụ dị n'ime site na Structure Chemical

Dochie akụkụ nke otu methyl (-CH3) na otu phenyl (-C6H5) bụ usoro mgbanwe ọkwa ọkwa dị mma:

Ike  intermolecular emelitere : mgbanaka benzene na-emepụta mmekọrịta siri ike π-π intermolecular, na-ebuli ike dị n'otu nke nrapado, nke na-eme ka njide ike na ike bee.

·  Mmụba yinye molekụla siri ike : Otu Phenyl nwere nnukwu mgbochi siri ike, na-egbochi ntụgharị nke ụdọ silicone na ibelata mgbanwe ngbanwe. Nke a na-erite uru ijide ike mana ọ na-eme ka ike gwụ nke mbụ.

Ọdịiche  dị mma : Mgbanwe Phenyl na-eme ka njikọ nke silicone PSA dị n'elu ala, na-akwalite njikọ ihu, ma na-eme ka ike nke mbụ na ike bee.

2. Arọ Molecular & Nkesa: Iwu Ịrụ Ọrụ site na Mgbakwụnye anụ ahụ & Mkpokọta Steeti

Otu ndị na-arụ ọrụ na-achịkwa ụkpụrụ kemịkal , ebe ịdị arọ molecular na nkesa ịdị arọ molecular (Polydispersity Index, PDI) na-achịkwa ụkpụrụ anụ ahụ :

Ibu Molecular (Mw)

Ike jikọrọ ọnụ na-esite na njikọ anụ ahụ nke ụdọ polymer.

Mw  dị elu na-etolite netwọk njikọ chiri anya ma na-emeziwanye ike njide.

Mw  dị elu nke ukwuu na-eme ka agbụ molekụla sie ike na obere mgbanwe, na-ebute mbelata mbido mbụ na ike bee.

Nkesa ibu arọ (MWD)

·  Nkesa dị warara : arụmọrụ n'ụdị, njikarịcha ebumnobi dị mfe maka otu ihe dị ka ihe mbụ dị elu.

·  Nkesa sara mbara : Mmekọ arụmọrụ dakọtara. Mpekere irighiri ihe dị elu na-etolite skeleton netwọk siri ike iji kwe nkwa ịdị n'otu na ijide ike; Ụmụ irighiri ihe dị obere na-arụ ọrụ dị ka mmanụ mmanu dị n'ime na ndị na-eme ngwa ngwa wet, na-eme ka ngagharị nke agbụ na-eme ka ọ dị ngwa ngwa iji hụ na mbido mbụ dị mma, na-arụ ọrụ zuru oke.

3. Mmekọrịta mmekọrịta nke M/Q Ratio, Resin Dosage na Silicone Rubber Viscosity

Methyl/phenyl ruru na molekụla ịdị arọ na-ekpebi ihe dị n'ime ya nke resin MQ; mgbe M/Q ruru, resin ka silicone roba ratio na silicone roba viscosity bụ kpọmkwem ukpụhọde parameters na usoro engineering, nke ga-dakọtara synergistically.

Oke M/Q

M / Q ruru kpọmkwem na-ekpebi molekụla arọ, ọdịnaya hydroxyl na ndakọrịta na silicone rubber.The kacha mma M / Q molar ratio maka silicone PSA bụ n'ozuzu 0.6 ~ 1.2 .Ka ihe atụ, ọgwụ-ọkwa PSA adopts ezigbo M / Q uru nke banyere 0.78; resin na M / Q 0.6-0.9 jikọtara ya na silicone roba (viscosity 100 × 10⁻ m² / s) na oke nha nke 2: 3 na-enweta arụmọrụ nrapado zuru oke.

Ratio ngwakọta resin / silicon rubber

Oke nke a bụ mkpịsị ugodi iji kwado ihe atọ bụ isi (mkpọtụ mbido, ike ijide, ike bee).

Ọdịnaya  resin dị elu na-eme ka njikọta ọnụ, na-ejide ike na ike bee mana ọ na-ebelata ihe mbụ.

Ọdịnaya  rọba dị elu na-egosi omume na-emegide.

Dịka ọmụmaatụ, iwelite oke nke MQ resin gaa na roba silicone 107 site na 1.2 ruo 2.5 ga-abawanye ike njide na ike bee 180 Celsius ka ọ na-ebelata mbido mbụ. tack.In irè formulations, uka ruru nke silicone resin na silicone roba na-abụkarị 45:55 ~ 75:25.

Silicone roba viscosity

The molekụla arọ gosipụtara site viscosity na-ekpebi isi rheological Njirimara nke nrapado usoro na-achọ ezi ndakọrịta na MQ resin.Low-viscosity silicone roba nwere mma ndakọrịta na MQ resin, mma maka mbụ tack na bee ike, ma nwere ike imebi ejide ike.

4. Ụkpụrụ Nhazi Ụdị maka Nhazi Ịrụ Ọrụ

N'ime imepụta silicone PSA, akara mkpịsị ugodi atọ - tack mbụ, ike ijide, ike bee 180º  - nwere ike ịhazi ya nke ọma site na isi ụzọ abụọ:

Mgbanwe Phenyl  — njikarịcha ọtụtụ : phenyl doping kwesịrị ekwesị na-emezi ihe atọ niile n'otu oge, na-emebi mmachi seesaw ọdịnala.

·  Mgbanwe nke ịdị arọ na nkesa - mgbakwunye ahia-apụ : njikwa ziri ezi nke ịdị arọ molecular na nkesa na-achọpụta nguzozi ahaziri iche n'etiti mbido mbụ na ijide ike maka ọnọdụ ngwa dị iche iche.

N'ime mmepụta mmepụta ihe, usoro a na-ahụkarị bụ usoro nkesa ihe dị arọ molekụla gbakwunyere resin na-agafeghị oke  iji mee ka usoro nhazi na arụmọrụ zuru oke na-arụ ọrụ. Maka oke okpomọkụ dị elu na gburugburu ebe obibi kemịkalụ, elu-phenyl-content MQ resin bụ ngwọta kachasị mma.

Ọdịnaya teknụzụ dị n'elu bụ Jiangsu Aokai New Materials Technology Co., Ltd.

Ọ bụrụ na ị chọrọ ịmata zuru ezu parameters, ngwa ndapụta na ngwọta ahaziri maka anyị zuru ngwaahịa ahịrị: PTFE elu-okpomọkụ ákwà, PTFE elu okpomọkụ teepu, PTFE elu okpomọkụ ntupu eriri, enweghị nkebi fusing igwe eriri, otu akụkụ PTFE ákwà, elu okpomọkụ na-eguzogide na-ebu belt na elu-okpomọkụ kọntaktị:

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