Cov txheej tiv thaiv dej yog ib hom khoom siv polymer ua kua nplaum uas tsis muaj duab meej ntawm chav sov. Tom qab txheej, ib txheej hydrophobic tawv tuaj yeem tsim rau ntawm qhov chaw los ntawm kev ua kom cov kuab tshuaj yaj, ua kom dej yaj lossis kho kom rov zoo. Cov txheej tiv thaiv dej rau kev tsim kho suav nrog cov txheej tiv thaiv dej silicone, cov txheej tiv thaiv dej roj hmab silicone, cov txheej tiv thaiv dej nkag mus rau hauv cov cement, cov txheej tiv thaiv dej choj tiv thaiv ib puag ncig uas ua los ntawm dej. Cov qauv kev ua tau zoo xws li kev ywj pheej ntawm qhov kub qis thiab kev tsis nkag tau tuaj yeem sim los ntawm qee txoj kev sim.

1. Saib cov xim pleev thaiv dej rau kev tsim kho! Hom 1 xim pleev thaiv dej rau kev tsim kho.

Cov txheej txheem tiv thaiv dej silicone yog cov roj hmab silicone uas yaj tau hauv dej ua cov khoom siv hauv paus, siv cov khoom siv thev naus laus zis siab ua los ntawm cov txheej txheem tiv thaiv dej hauv tsev. Cov txheej txheem tiv thaiv dej silicone yog cov txheej txheem tiv thaiv dej-emulsion ua los ntawm cov roj hmab silicone emulsion lossis lwm yam emulsion ua cov khoom siv hauv paus, nrog dej, riam phom sau thiab ntau yam kev pabcuam. Cov txheej txheem muaj cov yam ntxwv zoo tshaj plaws ntawm cov khoom siv tiv thaiv dej thiab permeable, thiab muaj kev tiv thaiv dej zoo heev, permeability, zaj duab xis tsim, elasticity, sealing, elongation thiab tsis kub.

2. Cov roj hmab silicone tsis muaj dej tsis muaj txheej silicon

Cov roj hmab txheej tiv thaiv dej yog ib hom txheej tiv thaiv dej uas muaj silicone roj hmab emulsion thiab lwm yam emulsion complex ua cov khoom siv tseem ceeb, ntxiv cov inorganic filler, crosslinking agent, catalyst, reinforcing agent, defoamer thiab lwm yam tshuaj ntxiv. Cov khoom muaj kev ua tau zoo heev ntawm ob qho tib si coated waterproof coating thiab saturated waterproof coating, nrog rau kev tiv thaiv dej, permeability, zaj duab xis tsim, elasticity, sealing thiab tsis kub. Lub hauv paus deformation adaptability yog muaj zog, tob hauv lub hauv paus, thiab lub hauv paus ua ke yog khov kho. Engineering sib tsoo, polishing, txau yog yooj yim, zaj duab xis tsim ceev ceev. Siv tau rau kev tsim kho hauv paus ntub, tsis muaj tshuaj lom, tsis muaj saj, tsis kub hnyiab, muaj kev nyab xeeb thiab txhim khu kev qha, nrog ntau yam xim ntawm cov xim tiv thaiv dej, yooj yim rau kev tswj hwm. Silicone roj hmab txheej tiv thaiv dej yog ib hom dej-emulsion waterproof coating nrog dej ua cov khoom faib tawm. Tom qab dehydration thiab hardening, polymer compounds nrog network qauv raug tsim. Tom qab qhov chaw ntawm txhua txheej hauv paus yog coated nrog waterproof coating, qhov ceev ntawm cov khoom me me nce thiab qhov fluidity ploj nrog infiltration thiab evaporation ntawm dej. Thaum cov txheej txheem ziab txuas ntxiv mus, dej ntau dhau ploj thiab cov khoom me me emulsion maj mam sib cuag thiab condense. Nyob rau hauv qhov kev ua ntawm crosslinking thiab catalyst, qhov kev sib txuas ntawm crosslinking tau ua tiav, thiab thaum kawg cov yeeb yaj kiab sib xws thiab ntom roj hmab elastic txuas ntxiv tau tsim.

Nrog rau kev tsim cov txheej txheem tiv thaiv dej organic, cov txheej txheem tiv thaiv dej rau riam phom kuj tseem tab tom tsim kho. Tam sim no, cov txheej txheem tiv thaiv dej inorganic tau dhau los ua qhov chaw tshawb fawb tseem ceeb. Nws yog ib qho ntawm cov ntsiab lus tseem ceeb ntawm kev tsim cov khoom siv ib puag ncig hauv xyoo pua 21st.

Muaj ob hom txheej tiv thaiv dej rau riam phom: txheej tiv thaiv dej thiab txheej tiv thaiv dej nkag mus rau hauv.

1. Thaum lub sijhawm tsim kho thiab txhim kho engineering, thawj zaug pom zoo kom siv cov cement-based penetrant crystalline waterproof coating los tiv thaiv dej rau sab hauv ntawm lub tsev. Tshwj xeeb tshaj yog rau cov chaw kho dej phwj tuaj, cov pas dej nyob saum npoo av thiab lwm yam haujlwm zoo sib xws.

Txij li xyoo 1960, ua ib txoj kev tiv thaiv dej zoo rau sab nraub qaum ntawm cov qauv pob zeb (txoj kev tiv thaiv dej sab hauv), cov tshuaj tiv thaiv dej crystalline uas ua los ntawm cement tau maj mam nthuav dav nws ntau yam thiab nkag mus rau hauv thaj chaw tshiab ntawm kev siv hauv kev tsim kho vaj tse. Tam sim no, cov tshuaj tiv thaiv dej crystalline uas ua los ntawm cement tau siv dav hauv cov qauv hauv av ntawm cov tsev lag luam thiab pej xeem, kev thauj mus los rau pej xeem, kev tsim choj, cov chaw tsim dej haus, cov chaw kho dej phwj tuaj, cov chaw tsim hluav taws xob hydropower, cov chaw tsim hluav taws xob nuclear, cov haujlwm txuag dej thiab lwm yam. Kev nkag tau zoo, kev nplaum zoo, kev tiv thaiv xeb hlau, tsis muaj teeb meem rau tib neeg lub cev, kev tsim kho yooj yim.

2. Cov txheej txheem tiv thaiv ib puag ncig ntawm tus choj dej yog ib hom txheej txheem tiv thaiv dej tshiab, uas muaj qhov zoo ntawm kev yaj dej zoo, tsis muaj tshuaj lom, tsis muaj kuab paug, muaj zog sib txuas siab, zoo elasticity, ntau yam kub thiab txias, tus nqi qis, thiab lwm yam. Cov khoom no yog ua los ntawm cov roj av asphalt zoo ua cov khoom siv hauv paus, cov roj hmab polymer ua cov khoom hloov kho thiab dej ua cov khoom nruab nrab. Nws yog tsim los ntawm catalyst, cross-linking, emulsification thiab lwm yam thev naus laus zis, uas hloov cov txheej txheem tsim khoom ib txwm muaj.

3. Cov txiaj ntsig tseem ceeb: Qhov sib piv ntawm cov khoom siv rwb thaiv tsev los ntawm polymer emulsion rau cement tuaj yeem hloov kho kom tau raws li qhov xav tau ntawm kev ywj pheej thiab lub zog ntawm ntau yam haujlwm, thiab txoj kev tsim kho yooj yim. Hom txheej txheem dej tsis muaj dej no siv dej ua cov khoom tawg los daws cov teeb meem ib puag ncig thiab ua rau tib neeg noj qab haus huv ntawm cov txheej txheem dej tsis muaj dej xws li tar thiab asphalt. Yog li ntawd, nyob rau xyoo tas los no, nws tau tsim kho sai hauv tsev thiab txawv teb chaws thiab tau dhau los ua lub hnub qub nce hauv cov ntaub ntawv dej tsis muaj dej.

4. Cov txheej txheem silicone acrylic sab nraud rau phab ntsa Silicone sab nraud rau phab ntsa yog lub npe luv ntawm silicone acrylic sab nraud rau phab ntsa. Nws yog cov txheej txheem tshiab rau phab ntsa sab nraud uas muaj zog tiv taus huab cua (lub neej ua haujlwm ntau tshaj 10 xyoo) thiab muaj kuab paug ntau. Nws yog siv dav ua cov txheej txheem tiv thaiv dej. Cov xim latex tsis muaj tshuaj lom, tsis muaj kuab paug rau ib puag ncig thiab tsis ua rau tib neeg lub cev tsis muaj teeb meem. Cov ntaub ntawv tsim kho uas ua tau raws li cov kev xav tau ib puag ncig tam sim no yog cov khoom hloov pauv ntawm cov txheej txheem. Txoj kev sim polyurethane txheej txheem tiv thaiv dej 1.

1. Kev Tsim Khoom. Kuaj cov cuab yeej txhuam: cov qauv txheej; Lub thawv ziab cua fais fab: tswj qhov tseeb 2.

2. Theem sim:

(1) Ua ntej qhov kev sim, cov bellows, cov cuab yeej thiab cov xim yuav tsum tau muab tso rau hauv qab cov xwm txheej sim rau ntau tshaj 24 teev.

(2) Ntsuas qhov ntau ntawm cov qauv xav tau los xyuas kom meej tias qhov kawg txheej tuab (1.50.2) hli.

(3) Ntiav ib qho khoom siv sim los sib tov cov xim tiv taus hluav taws kom sib npaug, ntsuas qhov hnyav ntawm cov xim tiv taus hluav taws ntau yam raws li cov cai ntawm cov chaw tsim khoom, thiab tom qab ntawd sib tov cov khoom siv sim kom sib npaug. Raws li qhov xav tau, qhov ntau ntawm cov tshuaj diluent tuaj yeem yog qhov ntau uas cov chaw tsim khoom teev tseg, thiab thaum qhov ntau ntawm cov tshuaj diluent nyob hauv qhov ntau, tus nqi nruab nrab tuaj yeem siv tau.

(4) Tom qab cov khoom sib tov, sib tov tag nrho rau 5 feeb, ncuav rau hauv lub thawv sib cuag kom tsis txhob muaj npuas sib tov. Lub pwm yuav tsis deform thiab qhov chaw du. Yuav kom pab txhawb kev poob plaub hau, koj tuaj yeem kho nrog tus neeg sawv cev tshem plaub hau ua ntej thov. Raws li qhov yuav tsum tau ua ntawm tus neeg tsim khoom, cov qauv yuav tsum tau pleev xim ntau dua ib zaug (txog li 3 zaug), nrog txhua lub sijhawm tsis pub tshaj 24 teev. Qhov chaw yuav tsum tau leveled ib zaug kawg thiab tom qab ntawd kho.

(5) Cov xwm txheej kho ntawm kev npaj txheej: tshem tawm raws sijhawm raws li qhov xav tau, thiab tom qab tshem tawm, txheej txheej raug tig rau kev kho kom tsis txhob muaj cov txheej txheem tshem tawm. Cov txheej txheem tsis puas tsuaj. Txhawm rau kom yooj yim tshem tawm, nws tuaj yeem ua tiav ntawm qhov kub qis, tab sis qhov kub ntawm kev tshem tawm yuav tsum tsis txhob qis dua qhov kub qis uas hloov pauv tau.

2. Kev sim tsis pub dej nkag.

1. Cov cuab yeej sim: lub ntsuas impermeability; Lub qhov aperture yog 0.2 hli. Cov kauj ruam sim:

(1) Txiav peb daim qauv uas muaj li ntawm (150-150) hli, muab tso rau 2 teev raws li cov xwm txheej xeem txheem, sau lub cuab yeej nrog dej ntawm qhov kub ntawm (235), thiab tshem tawm tag nrho cov huab cua hauv lub cuab yeej.

(2) Muab cov qauv tso rau ntawm lub phaj uas nkag tau, ntxiv ib daim hlau mesh uas loj ib yam rau cov qauv, npog lub phaj qub 7-qhov, thiab maj mam clamp kom txog thaum cov qauv raug clamped rau ntawm lub phaj. Qhuav qhov chaw tsis sib cuag ntawm cov reagent nrog daim ntaub lossis cua compressed thiab maj mam nias rau qhov siab uas tau teev tseg.

(3) Tom qab ncav cuag qhov siab uas tau teev tseg, tswj qhov siab rau (302) feeb. Qhov dej permeability ntawm cov qauv raug pom thaum lub sijhawm sim (qhov poob qis ntawm qhov siab ntawm dej lossis dej ntawm qhov tsis yog ntsej muag ntawm cov qauv).

Txoj kev sim tshuaj polymer waterproof coating:

I. Qauv thiab npaj qauv. Ntsuas qhov hnyav ntawm cov kua thiab cov khoom khov ntawm cov qauv, muab tso rau hauv cov xwm txheej xeem raws li qhov sib piv uas tus neeg tsim khoom teev tseg, rau 5 feeb, do nrog tshuab rau 5 feeb, cia lawv sawv rau 1 txog 3 feeb kom txo cov npuas, thiab tom qab ntawd nchuav rau hauv lub pwm txheej uas teev tseg hauv "Polyurethane Waterproof Coating Test Method" rau txheej. Yuav kom yooj yim tso tawm, qhov chaw ntawm zaj duab xis tuaj yeem kho nrog tus neeg sawv cev tso tawm. Cov qauv raug txheej ob zaug lossis peb zaug thaum lub sijhawm npaj, thiab txheej tom kawg yuav tsum tau ua tom qab txheej dhau los qhuav, thiab lub sijhawm ntawm ob qho kev hla yog (12 ~ 24) teev, kom qhov tuab ntawm cov qauv tuaj yeem ncav cuag (1.5 ± 0.50) hli. Qhov chaw ntawm cov qauv txheej kawg raug khawb tiaj tus, tso rau 96 teev nyob rau hauv cov xwm txheej txheem, thiab tom qab ntawd unmolded. Cov qauv demoulded tau kho hauv qhov cub ziab ntawm (40 ± 2) ℃ sab saud rau 48 teev, thiab tom qab ntawd muab tso rau hauv lub tshuab ziab kom txias rau chav sov.

ob txoj kev ntsuas dej tsis kam

Cov qauv uas tau npaj lawm raug txiav ua 3 daim (150 × 150 hli) tom qab kho, thiab kuaj raws li cov cuab yeej kuaj thiab cov txheej txheem uas tau teev tseg rau kev kuaj tsis pub dej nkag. Lub siab kuaj yog 0.3MPa thiab lub siab tau tswj hwm rau 30 feeb.

Kev ntsuam xyuas tus qauv rau kev tsim cov txheej txheem dej tsis nkag

1. Kev Nthuav Dav Kev nthuav dav yog ua kom txhua yam txheej txheem dej tsis muaj zog muaj peev xwm hloov kho rau qhov deformation ntawm txheej hauv paus, yog li kom ntseeg tau tias cov nyhuv dej tsis muaj zog.

2. Kev hloov pauv kub tsawg Qhov kub siab dhau yuav ua rau cov xim ntws, qhov kub qis dhau yuav ua rau cov xim tawg, yog li qhov kev hloov pauv kub qis kuj yog qhov qhia txog cov xim.

3. Kev Tiv Thaiv Dej Rau kaum lub npe nrov tshaj plaws ntawm cov txheej tiv thaiv dej, kev tiv thaiv dej yog qhov tseem ceeb tshaj plaws. Yog tias qhov yuav tsum tau ua kom zoo tsis tuaj yeem ua tiav, yuav muaj kev xau ncaj qha ntawm cov txheej tiv thaiv dej tom qab ua tiav.

4. Cov khoom khov Cov khoom khov yog hais txog qhov zoo ntawm cov khoom khov hauv cov khoom slurry, uas yog cov khoom tseem ceeb ntawm ntau yam txheej txheem dej tsis muaj dej. Yog tias cov khoom khov ntawm cov xim tsis tshua muaj, qhov zoo ntawm zaj duab xis nyuaj rau lav.

5. Kev tiv taus cua sov nyob rau hauv qhov chaw siab tshaj plaws hauv lub caij ntuj sov, qhov kub ntawm lub ru tsev ntawm cov xim pob zeb tuaj yeem ncav cuag 70 ° C, yog tias qhov kub ntawm cov xim tsis kam yog tsawg dua 80 ° C, thiab nws tsis khaws cia rau 5 teev, ces zaj duab xis yuav tsim cov dej ntws, npuas thiab swb, cuam tshuam rau cov nyhuv dej tsis kam.