Leej twg tsis paub txog PVA kua nplaum, uas yog nquag siv rau gluing cov khoom los ntawm ntau yam ntaub ntawv: ntoo, ceramics, chipboard, linoleum, ntawv, iav, ntaub thiab tawv bases. Qhov nrov ntawm cov nplaum txiav txim siab qhov zoo adhesion ntawm cov khoom thiab qhov chaw yuav tsum tau glued, tus nqi pheej yig, nce tsis kam mus rau ya raws, tab sis tib lub sij hawm, zoo solubility nyob rau hauv dej, uas nyob rau hauv nws tus kheej teb cov lus nug, yuav ua li cas dilute. PVA kua nplaum? Lub hom phiaj ntawm cov kua nplaum yog txiav txim siab nyob ntawm nws ntau yam.
PVA kua nplaum yog cov khoom siv nrov tshaj plaws hauv ntiaj teb. Nws yog universal thiab muaj txiaj ntsig ob qho tib si thaum kawm hauv tsev kawm ntawv thiab thaum kho kho hauv tsev lossis chav tsev.
PVA kua nplaum no yog dab tsi?
keeb kwm ntawm cov khoom muaj ntau tshaj ib puas xyoo, thiab nws tau tsim rov qab rau xyoo 1912 ntawm lub xyoo pua xeem hauv lub teb chaws Yelemees. Ob peb xyoos tom qab, cov kua nplaum nkag mus rau hauv kev muag khoom thiab pib tsim rau kev lag luam. Xyoo 2018, cov nplaum nplaum muaj peev xwm tshaj li ib lab tons ntawm cov khoom.
Nws muaj dab tsikhoom
PVA stands rau Polyvinyl Acetate Adhesive, muaj pes tsawg leeg ntawm:
- ib qho tshwj xeeb hluavtaws fiber ntau raws li polyvinyl cawv - vinalone, uas suav txog li 95% ntawm cov khoom;
- ntau yam khoom ntxiv uas ua rau kom cov yas, ruaj khov, ua kom muaj zog.
hom PVA kua nplaum
Cov hom tseem ceeb ntawm PVA kua nplaum sib xyaw, muab faib ua hom los ntawm lub hom phiaj, suav nrog:
- khoom siv - rau gluing ntawv thiab cardboard puag;
- wallpaper lossis tsev neeg - rau gluing cov ntaub ntawv rau ntoo thiab cemented nto;
- kev tsim kho - rau fiberglass, ntawv thiab vinyl compositions. Ua hauj lwm raws li ib tug additive rau primers, uas yuav pab txhim kho cov cuab yeej technology thiab adhesion ntawm cov ntaub ntawv siv nyob rau hauv lub neej yav tom ntej: putties, plasters, qhuav mortar;
- super M - qhov tseem ceeb thaum gluing cov khoom ua los ntawm cov ntaub ntawv vapor-proof, ceramic thiab porcelain cov khoom, ntaub, iav, tawv. Tsis tas li ntawd, nws yog siv thaum txhim kho ntau yam txheej hauv pem teb;
- Ntxiv - siv rau gluing ntoo, plywood, tsev nets, wallpaper (cork, yas, ntawv, fiberglass), kab mob. Siv los ua lub zog ntxiv;
- Multipurpose - Siv tau thaum gluing ntawv thiab ntawv-laminate hniav yas rau ntoo, iav thiab hlau nto.
Yuav ua li cas los ua kua nplaum thiab nrog dab tsi
Yog li peb tuajCov lus nug uas nyiam ntau tus: yuav ua li cas rau dilute PVA kua nplaum? Peb maj mam teb - yog, koj ua tau. Nws tsuas yog yuav tsum tau ua kom raug. Yuav ua li cas tiv nrog xws li ib tug yooj yim txoj hauj lwm thiab tsis ua puas lub kua nplaum, nyeem rau.
Txhawm rau tiv nrog txoj haujlwm, sim ua raws qee cov lus pom zoo thiab dilute cov kua nplaum tsuas yog nrog dej sov, ntau hom kuab tshuaj cuam tshuam rau cov khoom siv thiab cov qauv ntawm cov khoom, ua kom puas. Nyob rau tib lub sijhawm, nws yuav tsum sib tov cov kua nplaum kom ntau li ntau tau.
Yuav ua li cas dilute ib qho hnyav hnyav hnyav
Cia saib seb PVA kua nplaum puas tuaj yeem diluted. Thaum cov kua nplaum dries, muaj thickened muaj zog, ib tug crust los yog me me qhuav hais zoo li flakes rau ntawm nws nto. Cov impurities no, uas cov tshuaj yuav muaj, yuav tsum tau muab tshem tawm ua ntej siv cov muaj pes tsawg leeg rau saum npoo.
Cumps ntawm jelly sib xws tuaj yeem sab laug thaum lawv yaj thaum nplawm.
Yuav ua li cas dilute qhuav mix
Koj twb paub yuav ua li cas thiab nrog dab tsi los dilute PVA kua nplaum hauv daim ntawv ib txwm, tab sis qee zaum koj yuav tsum ua haujlwm nrog cov sib tov qhuav. Cov tshuaj no yog diluted raws li qhov kev faib ua feem los yog qhov piv txwv qhia ntawm pob. Cov chaw tsim khoom pom zoo kom ua raws li cov lus pom zoo no, txwv tsis pub cov nplaum nplaum yuav plam nws cov khoom siv thiab tsis muaj txiaj ntsig hauv gluing.
Kev zam rau txoj cai
Yog tias 90% ntawm hom PVA kua nplaum tuaj yeem diluted nrog dej, ces 10% poob rau hauv ib pawg tshwj xeeb ntawm cov nplaumcov tshuaj muaj nyob rau hauv kev ua lag luam thiab tsis haum rau dilution nrog dej. Lawv, raws li txoj cai, tau nthuav tawm nyob rau hauv daim ntawv tiav: nyob rau hauv ib tug diluted lub xeev thiab nyob rau hauv lub thawv tsim nyog, vim hais tias lawv yog yus muaj los ntawm ib tug tsis kaj siab tsw tsw, thiab cov khoom nyob rau hauv qhib jars dries sai sai. Txhawm rau tiv thaiv cov kua nplaum los ntawm hardening, sim mus yuav cov ntim kom txaus uas koj tuaj yeem siv cov kua nplaum rau ib zaug. Qhov no yuav txuag tau cov kua nplaum thiab nyiaj txiag.
Tseem muaj qhov tshwj xeeb thaum cov kua nplaum no tau diluted, tab sis tsuas yog siv cov khoom siv hluavtaws tshwj xeeb xwb.
Yuav ua li cas thiaj siv tau cov kua nplaum kom zoo rau saum npoo
Yog li, tau txiav txim siab yuav ua li cas dilute PVA kua nplaum tuab, ua haujlwm nrog nws tsis muaj teeb meem. Nws yooj yim txaus. Lub xub ntiag ntawm cov lus qhia yuav ua rau kom yooj yim rau txoj hauj lwm, txij li thaum lub insert muaj cov lus qhia luv luv txog dab tsi no los yog hom khoom siv rau gluing thiab yuav siv li cas kom raug. Txij li thaum daim ntawv thov ntawm cov kua nplaum ntoo thiab cov ntawv nplaum yog qhov txawv me ntsis, qee cov neeg muaj teeb meem thaum gluing ntoo nto. Txhawm rau tiv thaiv lub sijhawm tsis zoo los ntawm qhov tshwm sim rau koj, nco ntsoov txoj cai yooj yim: siv cov kua nplaum rau sab ntawm cov khoom uas absorbs cov muaj pes tsawg leeg maj mam, uas yog, nrog ib tug tsawg ntxeem tau qauv.
Adhesive recommendations
Puas yog nws muaj peev xwm dilute PVA kua nplaum nrog dej, xam nws tawm. Nco ntsoov tias thaum ua haujlwm nrog PVA kua nplaum, tsis hais hom twg, ua raws li qee txoj cai:
- rau kev siv cov kua nplaum ntawm cov ntawv nyias nyias, ib txheej txaustxhais tau tias, thiab rau cov ntaub ntawv tuab - ob;
- rau qhov taw tes ntawm daim ntawv thov PVA siv lub nozzle tshwj xeeb, thiab yog tias nws tsis muaj, siv improvised txhais tau tias - ib lub koob txhaj tshuaj tsis muaj koob lossis ib lub pipette zoo tib yam;
- siv daim txhuam cev lossis cov menyuam ua cov txheej txheem loj;
- siv kua nplaum, pib ntawm qhov chaw thiab maj mam txav mus rau ntawm ntug;
- glued khoom, yog tias ua tau, tuav hauv siab kom ntseeg tau ntau dua.
Tom qab kawm cov ntaub ntawv hauv kab lus, koj tau txais cov lus teb rau cov lus nug uas nquag nug: "Yuav ua li cas rau dilute PVA kua nplaum?". Ua raws li cov lus qhia saum toj no, kev siv cov kua nplaum yuav yog ib qho kev daws teeb meem rau koj yog tias koj xav tau txuas txhua qhov chaw ua ke.
