Ku hambana eka Kutshamiseka ka Matirhelo ya Thepi ya PTFE ya Mahiselo yale Henhla leswi vangiwaka hi Tindlela timbirhi ta ku Vupfa ta Silicone Pressure-Sensitive Adhesive: Room-Temperature Maturation vs High-Temperature Maturation

Jiangsu Aokai New Materials, muendli wa xiphurofexinali wa thepi ya mahiselo yale henhla ya PTFE, u andlala hi vuenti ku hambana eka ku tiya ka swikumiwa leswi tisiwa hi mahiselo ya kamara na ku vupfa ka mahiselo yale henhla ya silicone pressure-sensitive adhesive (PSA).

I. Ku hambana eka Crosslinking Network na Matimba ya Nhlanganiso

1. Ku vupfa ka mahiselo yale henhla: Ku vumbiwa ka network ya crosslinking yo enta

Ehansi ka mahiselo ya maendlelo ya 120°C~180°C, ti molecular chains endzeni ka leyara yo namarhela ti kuma ku fambafamba loku ringaneleke, leswi tlakusaka nhlayo ya ku tlumbana ka mintlawa ya ntirho leyi hlamulaka. Ku vumbiwa netiweke ya swiphemu swinharhu leyi hlanganisiweke swinene, leyi hangalasiweke hi ndlela leyi fanaka, leyi nyikaka xinamarheti matimba yo tiya yo hlangana ku lwisana na ku khuluka na ku onhaka ehansi ka mahiselo yale henhla.

2. Ku vupfa ka mahiselo ya kamara: Xivumbeko lexi ntshunxekeke lexi hlanganisiweke

Ku angula swiya emahlweni hiku nonoka naswona swinga helelanga eka mahiselo ya ndzhawu (~25°C), leswi endlaka leswaku kuva na tindzhawu letinga tala, letinga ringaniki ta crosslinking xikan’we na swiphemu swotala swa free chain leswinga endliwiki leswi khomiweke endzeni ka xinamarheti. Swivumbeko swo tano leswi ntshunxekeke swi xaniseka swinene hi ku hlangana loku nga enelangiki, naswona swi olova kumbe ku gayela hi ku olova ehansi ka ku hisa.

3. Vuyelo bya xiboho eka masalela ya namarhela endzhaku ko rhurhumela

Thepi leyi vupfeke ya mahiselo yale henhla yi tinyungubyisa hi matimba yo tiya swinene yo hlanganisa kutlula matimba yo namarhela ya interfacial; leyara hinkwayo ya namarheta yi rhurhumela hi ku helela handle ka masalela. Kuhambana na sweswo, room-temperature matured tape yi olova ku hundza eka cohesive failure, laha ku handzukeke adhesive leyi siyiweke eka ti bonded substrates naswona yi endla thyaka ro nonoka — leswi i xivandla xa matirhelo lexi twisisekaka swinene exikarhi ka maendlelo lawa mambirhi.

II. Matimba ya Vuhlanganisi bya Interfacial na PTFE Substrate

1. Ku vupfa ka mahiselo yale henhla: Ku hlanganisiwa ka tikhemikhali ta anchoring

PTFE yi na ultra-low surface energy naswona yi lava vutshunguri byo hlawuleka bya le henhla kumbe primer coating. Ku vupfa ka mahiselo yale henhla swiendla leswaku kuva na co-curing ya primer na silicone adhesive hi nkarhi wun’we, leswi humesaka ti internetrating chemical bonding networks eka interface. Matimba ya ultra-high bonding ya sivela full adhesive delamination kusuka eka substrate hinkarhi wa matirhelo ya mahiselo yale henhla lawa ya phindha-phindhiwaka.

2. Ku vupfa ka mahiselo ya kamara: Ku titshege hi ku adsorption ya nyama

Mahiselo ya ndzhawu yanga tirhisi full reaction potential ya primer. Ku hlanganisiwa exikarhi ka adhesive na substrate ngopfu ngopfu swiya hi ku tsana ka intermolecular physical adsorption, laha matimba ya bonding yanga ehansi swinene eka crosslinking ya ti khemikhali.

3. Makhombo yo hambana ya delamination ya mahiselo yale henhla

Ti interfaces leti khomiweke hi physical adsorption ti tsandzeka hiku olova ehansi ka nkarhi woleha wa high-temperature exposure, leswi endlaka leswaku kuva na ku hundziseriwa ka adhesive hiku hetiseka eka workpieces na bare PTFE fabric surface. Kuhambana na sweswo, ti chemical anchoring layers leti vumbiweke hiku tirhisa high-temperature maturation ti herisa hindlela yo tshembheka makhombo yotani ya delamination.

III. Masalela ya Molekhuli ya le Hansi & Swilo leswi Pfuxetaka swa Mahiselo ya le Henhla

1. Ku vupfa ka mahiselo yale henhla: Ku susiwa ka thyaka leri ringaneleke loko kungase rhumeriwa

Endlelo ra high-temperature maturation ritirha tani hi xiteji xa pre-purging lexi heleleke, lexi lavaka ku herisa swilo leswinga khulukaka kukatsa na ti catalysts, low-molecular silicone oils xikan’we na ti reaction byproducts. Leyara ya adhesive leyi hetiweke yitshama yi basile na ku humesiwa lokunga nyawuriki ka volatile hi nkarhi wa ku tirhisiwa ka makumu.

2. Ku vupfa ka mahiselo ya kamara: Swilo leswikulu leswi nga ni timolekhuli ta le hansi leswi khomiweke endzeni

Swiphemu swa molecule yale hansi switshama swi pfaleriwile endzeni ka matrix yo namarhela eka mahiselo ya kamara. Loko thepi yisungula ku vekiwa eka mahiselo yale henhla ka 200°C, swilo leswi swi cinca cinca hiku hatlisa naswona swi andlala hi matimba.

3. Switandzhaku leswi onhaka eka ku tshamiseka

Concentrated volatilization ya ti low-molecular compounds yi hlohletela bubbling, blistering xikan’we na sharp tack loss eka tape. Swinga tlhela swisiya swivati ​​swa mafurha ya silicone eka switirhisiwa leswi pfaleriweke hi kuhisa endzhaku ka mpfula ya mahiselo yale henhla. Hikokwalaho, thepi leyi vupfeke hi mahiselo ya kamara yi kombisa matirhelo lawa yanga tshamisekangiki swinene loko yi hisiwa rosungula, yi tsandzeka swipimelo swo tika swa vuhlayiseki eka switirhisiwa swa elektroniki, ku paka swakudya na ti indasitiri tin’wana ta vukheta.

IV. Ku Dyuhala ka Nkarhi wo Leha ka Thermal & Performance Drift

1. Ku vupfa ka mahiselo yale henhla: Xiyimo xo tiya hi thermodynamically loko ku rhumeriwa

Ku vupfa ka mahiselo yale henhla swi fambisa ti crosslinking reactions kusuhi naku hetiwa, hikokwalaho ti tapes ti huma efemeni na ti metrics ta matirhelo leti tiyisisiweke. Swikombiso swa nkoka swofana na matimba ya peel xikan’we na matimba yo khoma switshama swirikarhi swiri tano eka xirhendzevutani hinkwaxo xa vukorhokeri, handle ka ku hunguteka loku nga erivaleni endzhaku ka ku horisiwa, ku nonoka kumbe ku cinca cinca ka dimensional, leswi tisaka matirhelo lawa ya languteriweke swinene.

2. Ku vupfa ka mahiselo ya kamara: Ku vupfa ka vumbirhi loku yaka emahlweni hi nkarhi wa ntirho

Thepi leyi horisiweke hi mahiselo ya kamara yi hundza eka ti crosslinking reactions letinga helelangiki loko yi hlangana na mahiselo yale henhla eka ndzhawu ya muxavi. Ku nonoka hakatsongo-tsongo ni ku tshoveka swi humelela hi ku famba ka nkarhi; matimba ya peel ya tlakuka kusungula kutani ya hunguteka swinene, naswona tack yinga lahleka hiku hetiseka eka swiyimo swo tika.

3. Ku pimanisiwa loku heleleke ka ku tshembheka ka vukorhokeri

Ku vuyeriwa eka swivumbeko swa tikhemikhali leswi tiyeke, thepi leyi vupfeke ya mahiselo yale henhla yi hlayisa matimba yo khoma lawa ya hlamarisaka ehansi ka swiyimo swa ntirho leswi yaka emahlweni swa 260°C, ku lwisana na ku rhetela na ku gombonyoka ka makumu. Ku tirha ka thepi leyi vupfeke hi mahiselo ya kamara swi khuluka swi ya emahlweni, leswi endlaka leswaku maendlelo ya vuhumelerisi lawa ya nga cincekiki ya nga koteki. Ku hambana ka nkoka ku le ka leswaku ku vupfa ka mahiselo ya le henhla ku hetisisa ku cinca hinkwako ka tikhemikhali loku nga tshamisekangiki ku nga si rhumeriwa, ku tiyisisa ku tshembheka ka matirhelo ya le henhla eka vatirhisi va makumu.

Vuxokoxoko bya xithekiniki lebyi nga laha henhla byi nyikiwa hi Jiangsu Aokai Switirhisiwa Leswintshwa Thekinoloji Co., Ltd.

Loko u lava ku kuma swihlawulekisi leswi nga ni vuxokoxoko, swiyimo swa xikombelo na swintshuxo leswi endleriweke photifoliyo ya hina leyi heleleke ya swikumiwa ku katsa na lapi ra mahiselo ya le henhla ya PTFE, thepi yo namarhela ya mahiselo ya le henhla ya PTFE, bandi ra mesh ra mahiselo ya le henhla ya PTFE, bandi ro kandziyisa ku hisa leri nga riki na swirhabyani, lapi ra PTFE ra tlhelo rin’we, bandi ro fambisa leri nga riki na mahiselo ya le henhla na lapi ra fiberglass leri tiyiselaka ku hisa, hi kombela u hi tihlanganisa hi ku tirhisa vuxokoxoko lebyi nga laha hansi:

· Nomboro ya Vukorhokeri: Tatana Guo +86 18944819998

· Nomboro ya Vukorhokeri: Tatana Liu +86 13705266308

Minkarhi hinkwayo hi namarhela filosofi ya vukorhokeri bya xiphurofexinali na vutshembeki, hi mbilu hinkwayo hi nyika swintshuxo swa tiindasitiri swa xiyimo xin’we na vukorhokeri bya vaxavi lebyi anakanyisisiweke eka vatirhisani hinkwavo!