Polyvinyl Alcohol: Qhov Chaw Hloov Siab ntawm Adhesives.

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Yuav ua li cas PVA yuav cuam tshuam rau kev ua haujlwm ntawm cov ntaub ntawv: Qhov tseem ceeb thiab Nthuav dav

Yuav ua li cas PVA yuav cuam tshuam rau kev ua haujlwm ntawm cov ntaub ntawv: Qhov tseem ceeb thiab Nthuav dav

Tsab xov xwm no qhia txog yuav ua li cas Polyvinyl Alcohol (PVA) cuam tshuam rau kev ua haujlwm ntawm cov ntaub ntawv. Peb ua haujlwm nrog PVA thiab VAE emulsions hauv Suav teb, thiab peb yuav qhia txog yuav ua li cas PVA txhim kho cov haujlwm ntawm cov ntaub ntawv kom ua rau lawv haum rau txhua hom kev siv. Koj yuav kawm txog cov txiaj ntsig ntawm kev siv PVA hauv cov ntaub ntawv, cov khoom uas peb muag, thiab koj cov lus nug uas raug nug ntau zaus uas yuav pab koj nkag siab txog yuav ua li cas rau koj cov ntaub ntawv xav tau.
Tau ib qho quote

Cov txiaj ntsig tseem ceeb ntawm kev siv PVA hauv cov ntaub ntawv formulations

Txhim kho qhov txuas zog

PVA yog paub tias nws txhim kho lub zog txuas ntawm feem ntau adhesives, ua rau lawv muaj txiaj ntsig hauv lwm daim ntawv thov. Qhov no yog vim nws cov qauv molecular tshwj xeeb, uas ua rau nws muaj kev txuas ntxiv rau cov npoo, yog li ntawd muaj cov txuas uas muaj zog thiab ruaj khov. Qhov no yog tshwj xeeb tshaj yog muaj nuj nqis hauv kev tsim kho, ntim, woodworking thiab lwm yam lag luam uas qhov txuas ntxiv ua rau muaj kev ua tau zoo thiab lub neej ntawm cov khoom.

Peb PVA Cov Khoom rau Cov Daim Ntawv Thov Gluing

PVA yooj hais tawm qhov kev muaj ntsiab ntawv no yog cov xwm hauv txoj cai rau ndawj npawb thiab ua rau qhov film. Ntawv hydroxyl nyob rau cov substrate ntawm ntawm, los yog paper, wood, thiab glass, tau tawm qhia ua rau cov lub tsis tuaj. PVA adhesives dawb mus ua rau qhov film noog, ntawm ntawm, thiab tsis muaj cov kawg rooj, li cas lawv yog ib tug qhov bookbinding thiab cardboard lamination. Cov kev cov hydrolysis degree ua rau ua siab thiab water resistance: PVA fully hydrolyzed (99% DH) ua rau qhov bond ntawm ntawm hauv woodworking, los yog partially hydrolyzed (88% DH) li cas lawv yog ib tug qhov adhesive solubility hauv water. Tsis muaj plasticizers los yog glycerol ua rau cov flexibility ntawm ntawm hauv leather bonding. PVA thiab high solid content nyob rau cov thick coatings, tsis muaj application layers. Daws drying quick (10-15 minutes) ua rau production efficiency hauv packaging lines, los yog thermal stability ua rau hot-melt adhesives.

Cov Lus Nug Poj Niam Txog PVA Hauv Glue Thiab Nws Cov Txheej Txheem

Vim li cas PVA thiaj li raug suav tias yog ib txoj hauv kev los txhim kho lub zog txuas?

PVA porous qauv thiab cov qauv molecular tshwj xeeb txhim kho lub zog adhesive, qhov no rov qab ua kom muaj kev sib txuas zoo nrog cov npoo kom txhim kho qhov txuas uas ua rau muaj kev tsim kho ntawm ib qho txuas uas muaj zog. Ua li no, PVA yog siv thaum adhesives nrog cov yam ntxwv ua haujlwm siab xav tau.
PVA yog tsis muaj tshuaj phem thiab tuaj yeem biodegrade, yog li nws tuaj yeem siv tau hauv ntau hom kev siv xws li zaub mov thiab cov khoom ntim.

Cov Nqe Lus Xam

Cov Neeg Siv Khoom Tshaj Tawm txog PVA Adhesive Performance

Liam

Txij li thaum peb siv PVA adhesives hauv peb cov khoom, nws tau hloov pauv peb txoj kev tsim khoom tag nrho vim tias cov khoom no muaj peev xwm hloov pauv lub zog txuas uas tau txhim kho qhov zoo ntawm cov khoom ntau.

Tau ib qho nqi dawb

Peb tus neeg sawv cev yuav tiv tauj koj sai sai.
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kev piv txwv pva cov khoom rau kev siv hauv kev lag luam piv txwv pva qib rau kev siv hauv kev lag luam pva piv nrog lwm cov yeeb yaj kiab polyvinyl alcohol zoo tshaj plaws rau cov adhesive pva 2699 nqi thiab availability
Cov Kev Daws Teeb Meem Nqe Pheej Yig

Cov Kev Daws Teeb Meem Nqe Pheej Yig

Nrog peb cov khoom loj thiab lwm cov txuas, peb muaj PVA cov khoom uas nqe pheej yig uas tsis txo qhov zoo. Qhov no ua kom peb cov neeg siv khoom tau txais tus nqi zoo tshaj plaws thiab tso cai rau lawv kom ua tiav qhov ua tau zoo ntawm cov adhesives.
Cov Kws Tshaj Lij

Cov Kws Tshaj Lij

Peb pab neeg muaj kev paub tsom mus rau kev pab cov neeg siv khoom hauv kev xaiv cov PVA cov khoom zoo. Peb ntseeg tau tias peb cov neeg siv khoom tau txais cov adhesives formulations zoo rau lawv cov kev siv nrog kev qhia txog kev tshaj lij thiab cov kev daws teeb meem kho.