Ib tug silane coupling tus neeg sawv cev

Aluminium hydroxide yog hom tseem ceeb ntawm cov nplaim hluav taws tsis zoo, nrog cov nplaim hluav taws, tshem tawm cov pa luam yeeb, ua kom tiav peb txoj haujlwm, tsis muaj kev ua qias tuaj thaum lub sij hawm combustion, kev siv cov nplaim hluav taws inorganic rau ntau tshaj 80 feem pua ntawm tag nrho. Aluminium hydroxide tsis yog tsuas yog nplaim taws thiab tuaj yeem txo cov pa luam yeeb, tus nqi qis. Nws kuj tseem muaj cov txiaj ntsig ntawm kev txo cov coefficient ntawm thermal expansion (CTE) nyob rau hauv thickness kev taw qhia, kev txhim kho CTI kev ua tau zoo ntawm lub substrate, thiab txhim kho cov whiteness ntawm lub substrate. Nws yog dav siv nyob rau hauv lub tshav pob ntawm tooj liab clad phaj, tshwj xeeb tshaj yog nrog rau cov kev thov nce rau "halogen-dawb" cov khoom, aluminium hydroxide yog nce siv.

Xa kev nug

Hauj lwm lawm

Action mechanism ntawm silane coupling tus neeg sawv cev

Silane couplingTus neeg sawv cev yog cov tshuaj silicon-raws li tshuaj molecule uas muaj ob reactivity - inorganic thiab organic reactivity nyob rau hauv tib molecule. Cov qauv ib txwm muaj yog: (RO) 3SiCH2CH2CH2-X, qhov twg RO yog hais txog pawg hydrolyzable, xws li methoxy, ethoxy lossis acetoxy, thiab X yog cov organic ua haujlwm, xws li amino, methyl acrylic, epoxy, thiab lwm yam. .
silane coupling tus neeg sawv cev uas muaj peb pawg inorganic reactive nyob rau hauv silicon atom (feem ntau yog methoxy, ethoxy, los yog acetic acid) yuav khi zoo rau cov hlau hydroxyl pawg ntawm feem ntau inorganic cov ntaub ntawv, tshwj xeeb tshaj yog cov uas muaj silicon, txhuas, los yog hnyav hlau nyob rau hauv lawv cov qauv. Los ntawm reacting nrog ntxiv los yog residual dej nyob rau hauv inorganic nto, pawg alkoxy ntawm silicon atom hydrolyzes rau silanol, uas ces reacts nrog cov metallic hydroxyl pawg ntawm lub

inorganic nto los tsim cov qauv alkoxy thiab tshem tawm cov dej.

Cov txiaj ntsig ntawm kev kho cov silane rau viscosity ntawm viscose

Nyob rau tib lub sijhawm, qhov sib txawv ntawm kev kho thiab tsis kho aluminium hydroxide seasoning tau ntxiv raws li qhov ntsuas qhov sib hloov viscosity ntawm gel kua system. Ntxiv silane coupling tus neeg sawv cev tuaj yeem txo cov viscosity ntawm cov kua gel rau qee yam. Qhov no yog vim kev hloov pauv ntawm aluminium hydroxide agglomeration, siab dispersion, qhov sib txawv ntawm cov khoom kom txo tau, qhov chaw ntawm aluminium hydroxide los ntawm polarity mus rau non-polarity, oily ntxiv dag zog rau, kev sib txhuam ntawm cov khoom kom txo tau, lubrication kev ua tau zoo.

Cov nyhuv ntawm silane kev kho mob ntawm cov khoom siv ntawm tooj liab clad phaj

Cov kua nplaum sib raug tau siv los nias 1.61/1 tooj liab clad phaj los kuaj nws lub zog khoov. Qhov xaus yog tias tooj liab clad phaj nrog cov muab tub lim ntawm silane coupling tus neeg sawv cev muaj qhov sib txawv me ntsis hauv kev khoov lub zog. Lub interlaminar adhesion ntawm untreated Al (OH) 3 phaj txo nrog qhov nce ntawm qhov sib ntxiv, tab sis tom qab kev kho mob ntawm silane coupling tus neeg sawv cev, interlaminar adhesion txo qis. Raws li cov dluab scanning ntawm seem electron microscopy, cov nram qab no cov lus xaus tau: tom qab kev kho mob nrog silane coupling tus neeg saib xyuas, cov muab tub lim raug txo qis nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam, thiab resin thiab muab tub lim raug stripped ntawm tsawg qhov, qhia. tias lub zog khi ntawm cov muab tub lim thiab cov resin tau ntxiv dag zog.

Xaus

Cov silane coupling tus neeg sawv cev yog siv los kho aluminium hydroxide, thiab kev sib raug zoo ntawm cov muab tub lim thiab cov cob tau txhim kho, thiab qhov kev sib txuas tau zoo: qhov ua rau tooj liab clad phaj tau txhim kho interlaminar adhesion thiab alkaline tsis kam.
Cov txiaj ntsig ntawm txoj kev tshawb no muaj kev taw qhia tseem ceeb rau kev siv aluminium hydroxide muab tub lim hauv kev lag luam tooj liab clad phaj, thiab tseem pab txhawb kev txhim kho ntawm PCB machining kev ua tau zoo, rov qab ntxuav flux tsis kam thiab lwm yam zoo.