MQ Resin: Methyl/Phenyl & Mw Tasirin PSA Adhesion

Jiangsu Aokai New Materials , babban masana'anta na tef mai zafi na PTFE, yana ba ku ƙwararrun bincike na fasaha.

A polarity, steric hani na kwayoyin kungiyoyin da tara tsarin na kwayoyin sarƙoƙi a cikin MQ silicone resin su ne ainihin abubuwan da za su tsara ma'auni na ma'aunin ma'aunin matsi na silicone (PSA). yayin da nauyin kwayoyin halitta da rarraba nauyin kwayoyin halitta suna bin ka'idar seesaw na yau da kullum - mafi girman nauyin kwayoyin halitta yana inganta ikon riƙewa amma sadaukarwa na farko; m kwayoyin nauyi rarraba ne m hanya don daidaita uku key m Properties.

1. Methyl / Phenyl Ratio: Daidaita Ayyukan Aiki ta hanyar Tsarin Sinadarai

Maye gurbin wani ɓangare na ƙungiyoyin methyl (-CH3) tare da ƙungiyoyin phenyl (-C6H5) hanya ce mai inganci ta gyara matakan ƙwayoyin cuta:

·  Ingantacciyar ƙarfi ta intermolecular : Zoben benzene yana haifar da haɗin gwiwa mai ƙarfi na π-π, yana haɓaka ƙarfin haɗin gwiwa na mannewa, wanda a zahiri yana inganta ƙarfin riƙewa da ƙarfin kwasfa.

·  Ƙarfafa sarkar kwayoyin halitta : Ƙungiyoyin Phenyl suna da babban shinge mai mahimmanci, ƙuntatawa na juyawa na manyan sassan silicone da rage sassaucin sarkar. Wannan yana da fa'ida don riƙe iko amma yana ƙoƙarin raunana matakin farko.

·  Inganta wettability : Phenyl gyare-gyare yana haɓaka dangantakar silicone PSA zuwa saman saman, yana haɓaka haɗin kai, kuma yana haɓaka duka tack na farko da ƙarfin kwasfa.

2. Nauyin Kwayoyin Halitta & Rarraba: Dokokin Aiki ta hanyar Haɗin Jiki & Jiha Tari

Ƙungiyoyin aiki sun mamaye tsarin sinadarai , yayin da nauyin kwayoyin halitta da rarraba nauyin kwayoyin halitta (Polydispersity Index, PDI) ke mamaye tsarin jiki :

Nauyin Kwayoyin Halitta (Mw)

Ƙarfin haɗin gwiwa ya samo asali ne daga haɗuwa ta jiki na sarƙoƙi na polymer.

Mw mafi  girma yana samar da hanyar sadarwa mai yawa kuma yana inganta ƙarfin riƙewa sosai.

Mw mai tsayi da yawa  yana sa sarƙoƙi na kwayoyin su daure da ƙarancin sassauƙa, yana haifar da raguwar bugun farko da ƙarfin kwasfa.

Rarraba Nauyin Kwayoyin Halitta (MWD)

Rarraba  kunkuntar : Ayyukan Uniform, ingantaccen haɓakawa mai sauƙi don kadarorin guda ɗaya kamar babban takin farko.

·  Rarraba mai faɗi : Madaidaicin aikin da ya dace. High-molecular-weight fractions form a rigid network skeleton to guarantee cohesive strength and holding power; low-molecular-weight fractions act as internal lubricants and wetting accelerators, improving chain mobility and rapid surface wetting to ensure good initial tack, achieving overall balanced performance.

3. Haɓaka Haɗin kai na M/Q Ratio, Tsarin Gudun Guduro da Danganin Rubber Silicone

Matsakaicin methyl/phenyl da nauyin kwayoyin halitta sun ƙayyade abubuwan da ke tattare da resin MQ; yayin da M/Q rabo, guduro zuwa silicone roba rabo da silicone roba danko ne kai tsaye daidaita sigogi a dabara aikin injiniya, wanda dole ne a daidaita synergistically.

Rabon M/Q

M / Q rabo kai tsaye kayyade kwayoyin nauyi, hydroxyl abun ciki da kuma dacewa da silicone rubber.The mafi kyau duka M / Q molar rabo ga silicone PSA ne kullum 0.6 ~ 1.2 .Misali, likita-sa PSA rungumi dabi'ar mafi kyau duka M / Q darajar game da 0.78; guduro tare da M / Q 0.6-0.9 hade tare da silicone roba (danko 100 × 10 ⁻ m² / s) a wani taro rabo na 2: 3 samun m m m yi.

Resin / Silicone Rubber Blending Ratio

Wannan rabo shine maɓalli na maɓalli don daidaita mahimman kaddarorin guda uku (tack na farko, ƙarfin riƙewa, ƙarfin kwasfa).

Babban  abun ciki na guduro yana inganta haɗin kai, riƙe ƙarfi da ƙarfin kwasfa amma yana rage bugun farko.

Babban  abun ciki na roba yana nuna akasin yanayin.

Misali, haɓaka girman rabo na resin MQ zuwa 107 silicone roba daga 1.2 zuwa 2.5 zai ƙara ƙarfin riƙewa da ƙarfin kwasfa na 180 ° yayin ragewar farko. Tack.In m formulations, da taro rabo na silicone guduro zuwa silicone roba yawanci 45:55 ~ 75:25.

Silicone Rubber Viscosity

Nauyin kwayoyin da aka nuna ta danko yana ƙayyade ainihin kaddarorin rheological na tsarin mannewa kuma yana buƙatar dacewa mai kyau tare da MQ resin.Low-viscosity silicone roba yana da mafi dacewa tare da guduro MQ, wanda ya dace da farkon tack da ƙarfin kwasfa, amma yana iya yin sulhuntawa da iko.

4. Ƙa'idar Ƙirar Ƙirar Ƙira don Ƙirar Ayyuka

A cikin ƙirar siliki na PSA na silicone, maɓallan maɓalli guda uku - madaidaicin farko, ƙarfin riƙewa, ƙarfin kwasfa na 180 °  - ana iya daidaita shi daidai ta hanyoyi guda biyu:

Canjin Phenyl  - haɓaka haɓakawa da yawa : Madaidaicin phenyl doping yana haɓaka duk kaddarorin guda uku a lokaci guda, keta ƙuntatawar seesaw na gargajiya.

·  Nauyin kwayoyin halitta & daidaitawar rarraba - ƙari ciniki-kashe : Madaidaicin iko na nauyin kwayoyin halitta da rarrabawa yana fahimtar ma'auni na musamman tsakanin maƙallan farko da riƙe iko don yanayin aikace-aikacen daban-daban.

A cikin samar da masana'antu, dabarar dabara ta gama gari ita ce faffadar rarraba nauyin kwayoyin halitta mai tushe guduro da matsakaicin phenyl gyare-gyare  don daidaita aiwatar da aiki da cikakken aikin mannewa.Domin juriya mai tsananin zafi da matsananciyar sinadarai, babban-phenyl-abun ciki MQ guduro shine mafificin mafita.

ya samar da abun cikin fasaha na sama. Jiangsu Aokai New Materials Technology Co., Ltd

Idan kana son sanin cikakkun sigogi, yanayin aikace-aikacen da keɓance mafita don cikakken layin samfuranmu: masana'anta mai zafin jiki na PTFE, tef mai zafin jiki na PTFE, PTFE high-zazzabi raga bel, m fusing na'ura bel, guda-gefe PTFE masana'anta, high-zazzabi resistant conveyor bel da high-zazzabi masana'anta: fiberglass masana'anta resistant fiberglass masana'anta.

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