Waterproof plywood: nta thiab xyuas

Plywood yog heev nrov rau qhov kev siv kev ua lag luam. Nws yog siv nyob rau hauv ntau qhov chaw. Qhov no cov ntaub ntawv uas sawv cev rau ob peb los xij glued ntoo veneer kho nyob rau hauv ib txoj kev. Rau tebchaw ntawm cov khoom cua cob khaubncaws sab nraud povtseg yog siv. Qhov no kom hais tias tag nrho cov hom ntawm plywood , rau ib co raws li kev tiv thaiv los ntawm noo noo. Tab sis muaj ib co hom uas zoo dua lwm leej lwm tus tiv thaiv kom txhob ya raws. Nws yog cov dej-resistant plywood.

ntau lawm nta

Ntoo-layered slab muaj peev xwm ntawm tiv ntev raug dej, raws li GOST xa mus rau raws li PSF.

Cov ntawv waterproof plywood manufactured siv tshwj xeeb xaiv cov ntaub ntawv. Cov tshuaj thiab kev tiv thaiv cov ntaub ntawv uas los ntawm dej. Varnish siv rau impregnation ntawm ntoo, xim txheej. Nyob rau hauv tej hom ntawm txheej compositions shpaklyuyut siv PVA, siv fiberglass daim ntaub.

Twb nyob rau theem ntawm molding daim hlau yog muab los ntawm cov neeg kawm ntawv ntawm dej kuj. Qhov no yog ua li cas los kho tus yeees ntawm cov khoom cua resins siv rau tsevneeg cov khaubncaws sab nraud povtseg. Yog li ntawd, paub qhov substance siv raws li ib tug nplaum, nws yog ua tau los mus txiav txim cov neeg kawm ntawv ntawm humidity ntawm cov ntaub ntawv uas:

• Daim Hlau ua siv urea tshuaj muaj ib tug txwv ntawm dej kuj nyob rau hauv lub cheeb tsam ntawm 5-10%. Tej ntaub ntawv no muaj peev xwm los mus tiv ib tug luv luv lub sij hawm ya raws.
• 10-15% kuj mus ya enables cov kev siv ntawm phenol-formaldehyde compositions. Phiaj no hom yuav siv tau rau sab nrauv daim ntawv sau npe.
• Plywood dej-resistant laminated yog tsis raug mus rau degradation tshwm sim los ntawm dej. Nws tiv thaiv cov zaj duab xis tso rau ntawm qhov chaw ntawm lub phaj.

Qhov zoo ntawm cov khoom thiab nws tsis zoo

Txheej txheem rau cov ib veneer ua check thiab resistant mus deformation. Qhov no yog tiav los ntawm muaj ob peb khaubncaws sab nraud povtseg thiab tshwj xeeb adhesives. Yog li ntawd, peb yuav highlight qhov nram qab no zoo xws daim hlau:

• Kuj mus ya raws. Waterproof plywood yog tsis raug mus rau degradation tshwm sim los ntawm dej. Nws tsis unstuck rau khaubncaws sab nraud povtseg thiab yog tsis deformed.
• Ib qho yooj yim mus use. High zog cov ntaub ntawv uas tsis cuam tshuam nrog kev ua. Plywood yuav muab tau yooj yim ua nrog rau cov kev pab los ntawm ntau yam cuab yeej. Nws yooj yim rau nruab.
• Compatibility nrog rau lwm cov tsev cov ntaub ntawv. Nyob rau hauv Feem ntau, dej-resistant plywood yog siv raws li ib tug ntxiv khoom. Nws yooj yim txuas mus rau lub ntuj thiab polymer tsev cov ntaub ntawv.
• Hnav kuj. Plywood mas txhua yam kev nyuaj siab tsis muaj compromising lub sam xeeb.
• Kuj kub extremes.
• Qhov ntau uas ntawm kev siv.
• Loog. Plywood thaj muaj tus thawj ntoo qauv thiab cov xim.
• Tus nqi pheej yig. plywood phiaj no yuav pheej yig dua tshaj khoom ntoo. Thiab koj yuav nco ntsoov txuag tau nyiaj los ntawm kev xaiv ib tug cov ntaub ntawv uas los ntawm ib tug qis qib.

Lub tsuas drawback ntawm cov ntaub ntawv uas yog hauv lub xub ntiag ntawm teeb meem tshuaj muaj nyob rau hauv lub nplaum. Peb yuav tau tham txog formaldehyde. Yog li ntawd nws yog tsis pom zoo kom siv plywood nyob rau hauv thaj chaw thiab qhov chaw uas muaj cov me nyuam los yog cov neeg uas ua xua.

kheej ntawm daim ntawv thov

Waterproof plywood yog siv nyob rau hauv ntau lub teb ntawm kev ua si. Feem ntau cov feem ntau nws yog siv nyob rau hauv kev tsim kho. Nws yog siv nyob rau hauv cov nram no dab:

• Skinning ntawm phab ntsa, plag tsev, ru tsev.
• Sab hauv kho kom zoo nkauj ntawm cov vaj tse.
• Rau raug hniav ntsiab.
• Raws li ib tug reusable formwork.
• Rau billboards.
• Rau lub ntim kev lag luam.

Vim lub dag lub zog, durability thiab lub teeb yuag, waterproof plywood siv nyob rau hauv kev tsim kho ntawm ships, railway thauj, vaj rooj tog. Cais nws cov tsos ntawm shelled birch siv txawm nyob rau hauv chaw ua dav hlua.

hom ntawm daim hlau

Muab qhov degree ntawm dej kuj, plywood yog ua los ntawm ob peb yam:

• FC. Qhov no cov ntaub ntawv uas, uas yog manufactured siv karbomidoformaldegidnyh compositions. Nws muaj ib tug high noo noo kuj. Tab sis muaj zoo ib puag ncig kev kawm. Siv rau sab hauv kev ua hauj lwm, rooj tog zaum thiab décor.
• PSF muaj ntau zog tiv thaiv los ntawm noo noo. Cov kev siv raws li nplaum phenolformaldehyde cob. Ntawm tib cov ntaub ntawv uas ua ntxhib pem teb, ru tsev battens, ua ntim, billboards.
• PBS muaj tus loj tshaj kev tiv thaiv los ntawm dej thiab o. Nws bakelized dej-resistant plywood. Siv nws nyob rau hauv lub shipbuilding thiab aircraft raug.

Nyob rau hauv tsos, waterproof plywood yog muab faib ua tsib qib (1 mus rau 5). Yog hais tias cov phiaj no yog ua los ntawm hardwood, cov nuj nqis ua ntej ntawm tsab ntawv E yog ntxiv rau npav. Nyob rau hauv cov ntaub ntawv ntawm coniferous feedstock siv tsab ntawv H.

By nto kev kho mob cov ntaub ntawv uas zoo paub qhov txawv unsanded (NS) nrog ib leeg-mog polishing (III-1) thiab ib tug muab ob npaug rau-mog polishing (III-2).

Muaj kuj yog ib tug faib nyob rau hauv lub xov tooj formladegidov nyob rau hauv cov khoom. Thaum cov ntsiab lus ntawm mus txog kaum milligrams ib puas grams ntawm qhov ceeb thawj ntawm cov khoom, tham txog lub emission chav kawm ntawv E-1. Yog hais tias lub cob muaj los ntawm kaum rau peb caug milligrams, ces qhia tau tias cov chav kawm ntawv E-2.

Qhov ntev ntawm daim hlau

Qhov nruab nrab qhov ntev ntawm cov khoom 1,22h2,44, 1,25h2,50, 1,52h3,05, 1,52h1,52 m. Qhov no yog tsis yog txhua txhua, tiam sis tsuas yog lub ntsiab qhov ntev tshaj li uas tus waterproof plywood. Lub thickness ntawm cov phiaj yuav tsum yog los ntawm 9 mus rau 40 mm. Nws nyob rau ntawm lub xov tooj ntawm khaubncaws sab nraud povtseg ntawm cov ntoo. Muaj tej zaum yuav tsum yog los ntawm peb mus rau nees-nkaum ib.

• Plywood ua hom FC ntev 1.525 m. Nws dav yuav tsum 1.22, 1.27 los yog 1,525 m.
• PSF muaj ib tug dav ntawm 1.22 thiab 1.25 m. Nws ntev yog 2,44 rau 2.5 m.
• Qhov ntev PBS plywood sib txawv nyob rau hauv ntev los ntawm 1.5 mus 7.7 m, cov dav ntawm 1.2 mus 1,55 m.

neeg xyuas

Raws li tau txais kev pab, waterproof plywood - zoo cov khoom siv, uas yog tsis ntshai ntawm dej thiab atmospheric phenomena. Lawv tseem nco ntsoov rau hauv lub siab lub dag lub zog ntawm cov khoom.

Ntxiv mus, muaj yog yooj yim ntawm installation thiab tuav. Cov phiaj yuav rauj rau tes, screws ceev tuaj, ua qhov nyob rau hauv lawv, thiab li ntawm. Thiab tag nrho cov no tsis ua kom muaj teeb meem.

Ntawm minuses neeg siv qhia teeb meem nyob rau kev thauj mus los ntawm plywood. Qhov no yog vim loj qhov ntev. Qhov ntev waterproof plywood yog yeej ib txwm siab tshaj ib tug Meter. Vim rau qhov no, lub phaj yog muab tso rau tsis yog txhua txhua hom tsheb. Yog li ntawd, rau cov thauj ntawm cov ntaub ntawv uas yog tsim nyog los saib haum thauj.