Tus neeg sawv cev ua npuas dej polyurethane
Tus neeg sawv cev ua npuas dej polyurethane yog cov khoom lag luam ntawm kev sib xyaw ua ke ntawm cov thev naus laus zis aerosol thiab cov thev naus laus zis polyurethane ua npuas dej. Muaj ob hom lub xeev spongy ntawm hom raj thiab hom phom. Styrofoam yog siv los ua tus neeg sawv cev ua npuas dej hauv kev tsim cov npuas dej microcellular. Nws feem ntau tuaj yeem muab faib ua ob hom: hom lub cev thiab hom tshuaj lom neeg. Qhov no yog raws li seb qhov kev tsim cov roj yog cov txheej txheem lub cev (Volatilization lossis sublimation) lossis cov txheej txheem tshuaj lom neeg (Kev puas tsuaj ntawm cov qauv tshuaj lom neeg lossis lwm yam tshuaj lom neeg).
Lub npe Askiv
PU Ua Npuas Ncauj
Kev Siv Tshuab
Kev siv tshuab aerosol thiab kev siv tshuab ua npuas polyurethane
Hom
Hom raj thiab hom phom
Kev Taw Qhia
Cov tshuaj polyurethane ua npuas ncauj lub npe tag nrho yog ib qho khoom polyurethane ua npuas ncauj sealant. Lwm lub npe: tus neeg sawv cev ua npuas ncauj, styrofoam, PU sealant. Lus Askiv PU FOAM yog cov khoom ntawm kev sib xyaw ua ke ntawm aerosol technology thiab polyurethane ua npuas ncauj technology. Nws yog ib yam khoom polyurethane tshwj xeeb uas cov khoom xws li polyurethane prepolymer, blowing agent, thiab catalyst raug sau rau hauv lub aerosol can uas tiv taus siab. Thaum cov khoom raug txau los ntawm lub tank aerosol, cov khoom polyurethane ua npuas ncauj yuav nthuav dav sai thiab yuav khov thiab ua rau huab cua lossis cov dej noo hauv lub substrate los ua ib lub npuas ncauj. Ntau yam kev siv. Nws muaj qhov zoo ntawm kev ua npuas ncauj pem hauv ntej, nthuav dav siab, me me shrinkage, thiab lwm yam. Thiab cov npuas ncauj muaj lub zog zoo thiab kev nplaum siab. Cov npuas ncauj kho muaj ntau yam teebmeem xws li caulking, bonding, sealing, rwb thaiv tsev kub, nqus suab, thiab lwm yam. Nws yog ib qho khoom siv hauv tsev uas zoo rau ib puag ncig, txuag hluav taws xob thiab yooj yim siv. Nws tuaj yeem siv rau kev kaw thiab ntsaws, sau qhov sib txawv, kho thiab sib txuas, khaws cia kub thiab rwb thaiv tsev suab, thiab tshwj xeeb tshaj yog tsim rau kev kaw thiab tiv thaiv dej ntawm cov yas hlau lossis txhuas alloy qhov rooj thiab qhov rai thiab phab ntsa.
Kev piav qhia txog kev ua tau zoo
Feem ntau, lub sijhawm ziab ntawm qhov chaw yog li 10 feeb (hauv chav sov 20 ° C). Lub sijhawm qhuav tag nrho sib txawv nrog qhov kub thiab av noo. Raws li qhov xwm txheej ib txwm muaj, lub sijhawm qhuav tag nrho thaum lub caij ntuj sov yog li 4-6 teev, thiab nws siv sijhawm 24 teev lossis ntau dua kom qhuav ntawm xoom thaum lub caij ntuj no. Raws li qhov xwm txheej ib txwm muaj (thiab nrog ib txheej npog ntawm qhov chaw), kwv yees tias nws lub neej ua haujlwm yuav tsis tsawg dua kaum xyoo. Cov ua npuas dej kho tau zoo elasticity thiab lo rau hauv qhov kub ntawm -10 ℃ ～ 80 ℃. Cov ua npuas dej kho muaj cov haujlwm ntawm caulking, bonding, sealing, thiab lwm yam. Tsis tas li ntawd, cov neeg sawv cev polyurethane ua npuas dej uas tsis ua rau hluav taws kub tuaj yeem ncav cuag qib B thiab C hluav taws kub retardant.
Qhov tsis zoo
1. Tus neeg sawv cev ua npuas ncauj polyurethane, qhov kub siab, nws yuav ntws, thiab qhov ruaj khov tsis zoo. Tsis ruaj khov li polyurethane ua npuas ncauj.
2. Cov khoom siv foob ua npuas dej polyurethane, qhov ceev ntawm kev ua npuas dej qeeb dhau, kev tsim kho thaj chaw loj tsis tuaj yeem ua tiav, qhov tiaj tiaj tsis tuaj yeem tswj tau, thiab qhov zoo ntawm kev ua npuas dej tsis zoo dhau.
3. Cov khoom siv ua npuas ncauj polyurethane, kim heev
Daim Ntawv Thov
1. Kev teeb tsa qhov rooj thiab qhov rai: Kev kaw, kev kho thiab kev sib txuas ntawm qhov rooj thiab qhov rai thiab phab ntsa.
2. Qauv tshaj tawm: Qauv, kev tsim cov rooj xuab zeb, kev kho lub rooj nthuav qhia
3. Kev Tiv Thaiv Suab: Sau cov qhov sib txawv hauv kev kho kom zoo nkauj ntawm chav hais lus thiab chav tshaj tawm, uas tuaj yeem ua si lub suab rwb thaiv tsev thiab ua kom ntsiag to.
4. Kev Ua Vaj: Kev npaj paj, kev ua vaj thiab kev tsim kho av, lub teeb thiab zoo nkauj
5. Kev saib xyuas txhua hnub: Kho cov qhov, cov qhov sib txawv, cov vuas phab ntsa, cov vuas pem teb, thiab cov plag tsev
6. Kev txhaws dej tsis pub dej nkag: Kho thiab txhaws cov dej xau hauv cov kav dej, cov kav dej phwj tuaj, thiab lwm yam.
7. Ntim thiab xa khoom: Nws tuaj yeem qhwv cov khoom muaj nqis thiab tsis yooj yim puas tsuaj, txuag lub sijhawm thiab kev ceev, tiv taus kev co thiab siab
Cov Lus Qhia
1. Ua ntej kev tsim kho, yuav tsum tshem tawm cov roj av thiab cov hmoov av uas ntab rau ntawm qhov chaw tsim kho, thiab yuav tsum tsuag me ntsis dej rau ntawm qhov chaw tsim kho.
2. Ua ntej siv, co lub thawv polyurethane foaming agent rau tsawg kawg 60 vib nas this kom paub tseeb tias cov ntsiab lus ntawm lub thawv yog sib xws.
3. Yog tias siv cov tshuaj polyurethane ua npuas dej uas zoo li rab phom, tig lub tank kom tig rov qab los txuas nrog cov xov ntawm rab phom txau, tig lub qhov dej ntws, thiab kho qhov dej ntws ua ntej txau. Yog tias siv cov tshuaj polyurethane ua npuas dej uas zoo li lub raj, ntsia lub qhov yas rau ntawm cov xov ntawm lub qhov, teeb lub yeeb nkab yas kom sib haum, thiab nias lub qhov kom txau.
4. Ua tib zoo saib qhov ceev thaum txau, feem ntau qhov ntim tshuaj yuav yog ib nrab ntawm qhov ntim xav tau. Sau cov qhov sib txawv ntsug ntawm hauv qab mus rau sab saud.
5. Thaum sau cov qhov sib txawv xws li qab nthab, cov ua npuas dej uas tsis tau kho yuav poob vim yog lub ntiajteb txawj nqus. Nws raug pom zoo kom muab kev txhawb nqa kom zoo tam sim ntawd tom qab sau, thiab tom qab ntawd rho tawm kev txhawb nqa tom qab cov ua npuas dej tau kho thiab khi rau ntawm phab ntsa ntawm qhov sib txawv.
6. Lub ua npuas ncauj yuav raug tshem tawm hauv li ntawm 10 feeb, thiab nws tuaj yeem txiav tom qab 60 feeb.
7. Siv riam los txiav cov npuas dej ntau dhau, thiab tom qab ntawd pleev xim rau saum npoo nrog cov cement mortar, xim lossis silica gel.
8. Ntsuas qhov hnyav ntawm cov khoom ua npuas raws li qhov yuav tsum tau ua, ntxiv 80 npaug ntawm dej ntshiab kom dilute kom ua kua ua npuas; tom qab ntawd siv lub tshuab ua npuas los ua npuas cov kua ua npuas, thiab tom qab ntawd ntxiv cov npuas rau hauv cov magnesite cement slurry sib xyaw ua ke raws li qhov ntau uas tau teem tseg. Do kom sib npaug, thiab thaum kawg xa cov magnesite slurry mus rau lub tshuab ua lossis pwm rau kev ua.
Cov Lus Cim Txog Kev Tsim Kho:
Qhov kub siv ib txwm ntawm lub thawv polyurethane foaming agent yog +5 ~ + 40 ℃, Qhov kub siv zoo tshaj plaws yog +18 ~ + 25 ℃. Yog tias qhov kub qis, nws raug pom zoo kom muab cov khoom no tso rau ntawm qhov kub tas li ntawm +25 ~ + 30 ℃ rau 30 feeb ua ntej siv nws kom ntseeg tau tias nws ua tau zoo tshaj plaws. Qhov kub tiv taus ntawm cov ua npuas kho yog -35 ℃ ~ + 80 ℃.
Cov tshuaj ua npuas dej polyurethane yog ib hom ua npuas dej uas ua rau cov dej noo. Yuav tsum tau txau rau ntawm qhov chaw ntub thaum siv. Qhov dej noo ntau npaum li cas, qhov ua kom cov dej noo sai npaum li ntawd. Cov ua npuas dej uas tsis tau ua kom huv tuaj yeem ntxuav nrog cov tshuaj ntxuav, thaum cov ua npuas dej uas tau ua kom huv yuav tsum tau tshem tawm los ntawm cov txheej txheem kho tshuab (xuab lossis txiav). Cov ua npuas dej uas tau ua kom huv yuav tig daj tom qab raug lub teeb ultraviolet irradiation. Nws raug pom zoo kom siv lwm yam khoom siv (cement mortar, xim, thiab lwm yam). Tom qab siv rab phom txau, thov ntxuav nws nrog cov tshuaj ntxuav tshwj xeeb tam sim ntawd.
Thaum hloov lub tank, co lub tank tshiab kom zoo (co tsawg kawg 20 zaug), tshem lub tank khoob tawm, thiab hloov lub tank tshiab sai sai kom tiv thaiv qhov chaw txuas phom txau kom tsis txhob khov.
Lub qhov tswj kev ntws thiab lub qhov qhib ntawm rab phom txau tuaj yeem tswj qhov loj ntawm cov npuas dej ntws. Thaum lub tshuaj tsuag tsis ua haujlwm lawm, tam sim ntawd kaw lub qhov tswj kev ntws raws li txoj kev tig mus rau sab laug.
Kev Ceev Faj Txog Kev Nyab Xeeb
Cov ua npuas dej uas tsis tau kho yuav nplaum rau ntawm daim tawv nqaij thiab khaub ncaws. Tsis txhob kov koj daim tawv nqaij thiab khaub ncaws thaum siv. Lub thawv ua npuas dej polyurethane muaj lub siab ntawm 5-6kg/cm2 (25℃), thiab qhov kub yuav tsum tsis pub tshaj 50℃ thaum khaws cia thiab thauj mus los kom tiv thaiv kev tawg ntawm lub thawv.
Cov thoob dej ua npuas ncauj polyurethane yuav tsum tau tiv thaiv kom tsis txhob raug tshav ntuj ncaj qha thiab txwv tsis pub cov menyuam yaus. Tsis txhob muab cov thoob dej nchuav tawm tom qab siv, tshwj xeeb tshaj yog cov thoob dej ua npuas ncauj polyurethane uas siv ib nrab lawm uas tsis tau siv tag, yuav tsum tsis txhob muab pov tseg. Txwv tsis pub hlawv lossis tho cov thoob dej khoob.
Khaws cia kom deb ntawm cov nplaim taws qhib thiab tsis txhob kov cov khoom siv uas yooj yim hlawv thiab tawg.
Qhov chaw ua haujlwm yuav tsum muaj cua nkag tau zoo, thiab cov neeg ua haujlwm tsim kho yuav tsum hnav hnab looj tes ua haujlwm, cov khaub ncaws ua haujlwm thiab cov tsom iav thaum lub sijhawm ua haujlwm, thiab tsis txhob haus luam yeeb.
Yog tias cov ua npuas ncauj kov lub qhov muag, thov yaug nrog dej ua ntej mus rau tsev kho mob kom tau kev kho mob; yog tias nws kov daim tawv nqaij, yaug nrog dej thiab xab npum.
Cov txheej txheem ua npuas ncauj
1. Txoj kev ua ntej polymer
Cov txheej txheem ua npuas dej ua ntej-polymer yog ua kom (khoom siv dawb) thiab (khoom siv dub) ua ntej rau hauv pre-polymer, thiab tom qab ntawd ntxiv dej, catalyst, surfactant, lwm yam khoom ntxiv rau pre-polymer, thiab sib tov hauv qab kev sib xyaw ceev ceev. Soak, tom qab kho, nws tuaj yeem kho tau ntawm qee qhov kub thiab txias
2. Txoj kev semi-prepolymer
Cov txheej txheem ua npuas ncauj ntawm txoj kev semi-prepolymer yog ua ib feem ntawm polyether polyol (khoom siv dawb) thiab diisocyanate (khoom siv dub) rau hauv prepolymer, thiab tom qab ntawd muab lwm feem ntawm polyether lossis polyester polyol nrog diisocyanate sib xyaw, dej, Catalysts, surfactants, lwm yam khoom ntxiv, thiab lwm yam ntxiv rau hauv qab kev sib xyaw ceev ceev rau kev ua npuas ncauj.
3. Ib kauj ruam ua npuas dej
Ntxiv polyether lossis polyester polyol (khoom siv dawb) thiab polyisocyanate (khoom siv dub), dej, catalyst, surfactant, blowing agent, lwm yam additives thiab lwm yam raw khoom hauv ib kauj ruam, thiab sib tov hauv qab kev sib xyaw ceev ceev thiab tom qab ntawd ua npuas ncauj.
Cov txheej txheem ua npuas dej ib kauj ruam yog ib qho txheej txheem uas siv ntau. Kuj tseem muaj txoj kev ua npuas dej tes, uas yog txoj kev yooj yim tshaj plaws. Tom qab tag nrho cov khoom siv raw tau raug ntsuas qhov hnyav, lawv raug muab tso rau hauv lub thawv, thiab tom qab ntawd cov khoom siv raw no raug sib xyaw ua ke thiab txhaj rau hauv pwm lossis qhov chaw uas xav tau kom puv nrog ua npuas dej. Lus Cim: Thaum ntsuas qhov hnyav, polyisocyanate (khoom siv dub) yuav tsum tau ntsuas qhov hnyav kawg.
Cov ua npuas ncauj polyurethane tawv feem ntau yog ua npuas ncauj ntawm chav tsev kub, thiab cov txheej txheem molding yog qhov yooj yim heev. Raws li qib ntawm kev siv tshuab tsim kho, nws tuaj yeem muab faib ua tes ua npuas ncauj thiab tshuab ua npuas ncauj. Raws li qhov siab thaum lub sijhawm ua npuas ncauj, nws tuaj yeem muab faib ua siab ua npuas ncauj thiab qis siab ua npuas ncauj. Raws li txoj kev molding, nws tuaj yeem muab faib ua nchuav ua npuas ncauj thiab txau ua npuas ncauj.
Txoj Cai
Tus neeg sawv cev ua npuas dej Polyurethane tau teev los ntawm Ministry of Construction ua ib yam khoom uas yuav tsum tau txhawb nqa thiab siv thaum lub sijhawm "Eleventh Five-Year Plan".
Kev cia siab ntawm kev ua lag luam
Txij li xyoo 2000 cov khoom tau txhawb nqa thiab siv hauv Suav teb, qhov kev thov ua lag luam tau nthuav dav sai. Xyoo 2009, kev siv txhua xyoo ntawm kev lag luam kev tsim kho hauv tebchaws tau tshaj 80 lab lub kaus poom. Nrog kev txhim kho ntawm cov kev cai zoo ntawm lub tsev thiab kev txhawb nqa cov tsev txuag hluav taws xob, cov khoom zoo li no Tus nqi ntawm glutathione yuav nce ntxiv tas li yav tom ntej.
Hauv tebchaws, cov qauv thiab cov thev naus laus zis tsim khoom ntawm hom khoom no tau raug tswj hwm tag nrho, cov neeg sawv cev ua npuas dej fluorine uas tsis ua rau cov txheej ozone puas tsuaj feem ntau siv, thiab cov khoom lag luam nrog pre-foaming (1) tau tsim. Tsuas yog qee tus neeg tsim khoom tseem siv cov khoom siv valve xa tuaj, lwm cov khoom siv txhawb nqa tau ua hauv tebchaws.
Phau ntawv qhia
(1) Qhov hu ua pre-foaming txhais tau tias 80% ntawm cov neeg sawv cev polyurethane foaming tau ua npuas ncauj tom qab txau, thiab qhov ua npuas ncauj tom qab ntawd me me heev.
Qhov no tso cai rau cov neeg ua haujlwm kom nkag siab txog lub zog ntawm lawv txhais tes thaum siv rab phom ua npuas ncauj, uas yooj yim thiab yooj yim thiab tsis nkim kua nplaum. Tom qab txau cov ua npuas ncauj, cov kua nplaum maj mam tuab dua li thaum nws raug tua tawm.
Ua li no, nws nyuaj rau cov neeg ua haujlwm kom nkag siab lub zog ntawm kev rub lub pob ntawm lawv txhais tes, thiab nws yooj yim rau pov tseg cov kua nplaum, tsawg kawg yog 1/3 ntawm cov pov tseg. Tsis tas li ntawd, cov kua nplaum tom qab nthuav dav yog qhov yooj yim rau kev zawm lub qhov rooj thiab qhov rai tom qab kho, xws li cov kua nplaum ib txwm muaj hauv lub Hoobkas ua lag luam.
Lub sijhawm tshaj tawm: Tsib Hlis-25-2021