Njira yatsopano yopangira ufa wa latex wosungunukanso

Njira yakumbuyo

Ufa wa rabara wosinthika ndi ufa woyera wolimba womwe umakonzedwa popopera ndi kuumitsa latex yapadera. Umagwiritsidwa ntchito makamaka ngati chowonjezera chofunikira pa "matope osakanizika zikwizikwi" ndi zowonjezera zina zamatope osakanizika zouma zopangira zinthu zomangira makoma akunja. Ufa wa latex wosasunthika womwe umagwiritsidwa ntchito kwambiri ndi copolymer wa vinyl acetate, womwe ndi ufa woyera womwe ungasunthike momasuka ndipo ukhoza kufalikira bwino m'madzi kuti upange emulsion yokhazikika yokhala ndi magwiridwe ofanana ndi a latex yoyambirira. Monga chinthu chofunikira kwambiri chowonjezera muzinthu zomangika zouma, ufa wa latex wosungunukanso umagwira ntchito yofunika kwambiri mu matope osakanizika a simenti. Ukhoza kusintha mphamvu yomangirira ndi mgwirizano wa zinthuzo. Kuwongolera mphamvu yopindika yosalala ndi mphamvu yosinthasintha ya zinthuzo. Kuwongolera kukana kuzizira kwa zinthuzo. Kuwongolera kukana nyengo, kulimba, kukana kutopa kwa zinthuzo. Kuwongolera kusagwirizana ndi madzi ndi kuchepetsa kuyamwa kwa madzi. Kuwongolera kugwira ntchito bwino ndikuchepetsa kuchepa kwa zinthuzo. Kutha kupewa kusweka bwino. (I) Kuwongolera mphamvu yomangirira ndi mgwirizano

Mu zinthu zopangidwa ndi simenti youma, ndikofunikira kwambiri kuwonjezera ufa wa rabara wosungunukanso. N'zoonekeratu kuti zinthuzo zigwirizane bwino ndi mphamvu ya polima. Izi zimachitika chifukwa cha kulowa kwa tinthu ta polima m'ma pores ndi capillaries a simenti, komanso chifukwa cha mphamvu yabwino yogwirizana pambuyo pa madzi ndi simenti. Chifukwa cha kumamatira bwino kwa polymer resin yokha, imatha kukonza kumamatira kwa zinthu zopangidwa ndi simenti ku zinthu zopangidwa ndi simenti ku zinthu zopangidwa ndi simenti, makamaka kumamatira kwa zinthu zopangidwa ndi simenti ku zinthu zopangidwa ndi simenti monga matabwa, ulusi, PWC, ndi PS. Kusagwira bwino ntchito kumakhala ndi zotsatira zoonekeratu.

Kulimbitsa kupindika ndi kukana kupsinjika

Mu mafupa olimba omwe amapangidwa pambuyo poti matope a simenti asungunuka, filimu ya polima imakhala yotanuka komanso yolimba, ndipo imagwira ntchito ngati cholumikizira chosunthika pakati pa tinthu ta matope a simenti, chomwe chimatha kupirira kusinthasintha kwakukulu ndikuchepetsa kupsinjika. Kulimba kwamphamvu kwa kukana kugwedezeka ndi kupindika

Sinthani kukana kukhudzidwa

Ufa wa latex wosungunukanso ndi utomoni wa thermoplastic. Filimu yofewa yokutidwa pamwamba pa tinthu ta matope imatha kuyamwa mphamvu yakunja ndikupumula popanda kusweka, motero imawonjezera kukana kwa mphamvu ya matope.

Kuchepetsa kuyamwa kwa madzi m'madzi ndi kuchepetsa kuopsa kwa madzi m'madzi.

Kuwonjezera ufa wa latex wosungunuka kungathandize kukonza kapangidwe ka simenti. Polima yake imapanga netiweki yosasinthika panthawi ya madzi a simenti, imatseka mitsempha yamagazi mu simenti gel, imatseka kuyamwa kwa madzi, imaletsa kulowa kwa madzi, komanso imapangitsa kuti madzi asalowe.

Sinthani kukana kuvala ndi kulimba

Kuwonjezera ufa wa rabara wosungunukanso kungathandize kuwonjezera kukhuthala pakati pa tinthu ta simenti ndi filimu ya polima. Kukulitsa mphamvu yogwirizana kumathandizanso kuti matope azitha kupirira kupsinjika kwa matope, kuchepetsa kutha kwa matope, kuonjezera kukana kwa matope, komanso kutalikitsa moyo wa matopewo.

Sinthani kukhazikika kwa kuzizira ndi kusungunuka bwino komanso kupewa kusweka kwa zinthu

Ufa wa latex wosungunukanso, mphamvu ya pulasitiki ya utomoni wake wa thermoplastic imatha kuthana ndi kuwonongeka komwe kumachitika chifukwa cha kutentha ndi kupindika kwa zinthu za simenti zomwe zimayambitsidwa ndi kusintha kwa kutentha. Kuthana ndi zofooka za simenti yosavuta, monga kuchepa kwakukulu kouma komanso kusweka kosavuta, kungapangitse kuti zinthuzo zikhale zosinthasintha, motero zimapangitsa kuti zinthuzo zikhale zokhazikika kwa nthawi yayitali. Komabe, pali mavuto ena pakupanga ufa wa latex wosungunukanso m'mbuyomu, zomwe zimapangitsa kuti tinthu ta latex tisakhale tofanana komanso tokwanira, ndipo kusonkhana kumachitika nthawi zambiri popanga, kunyamula ndi kusunga. Izi zimakhudza momwe imagwiritsidwira ntchito.

Njirayi ingathe kuchitika kudzera mu njira zotsatirazi zaukadaulo: njira yopangira ufa wa latex wosungunuka m'madzi, zinthu zotsatirazi zimapangidwa molingana ndi kulemera kwa polymer emulsion 72-85%; colloid yoteteza 4-9%; chotulutsira 11-15%; zowonjezera zogwira ntchito 0-5%; zopangidwa ndi njira yotsatirayi.

a, kukonzekera colloid yoteteza: mu ketulo yoyankhira, ufa woteteza wa colloid womwe uli ndi kuchuluka kwa batching susakanizidwa ndi madzi ndipo umatenthedwa kuti usinthidwe kukhala guluu, ndipo chotsukira chimawonjezedwa, kutenthedwa ndikusungidwa kutentha kuti chipange colloid yoteteza yowonekera bwino, kotero kuti kukhuthala kufika pa 2500as, kolimba. Zomwe zili mkati mwake zimafika pa 19.5-20.5%.

b. Kukonzekera kufalikira: ikani colloid yoteteza yokonzedwa mu ketulo yokonzekera, kenako onjezerani polymer emulsion ya kuchuluka kwa batching, sakanizani mofanana, kenako onjezerani defoamer ndikuwonjezera madzi kuti musinthe kukhuthala kufika pa 70-200Mas, ndipo kuchuluka kolimba kufika pa 39%-42%, kutentha kufika pa 50-55°C.

C, yogwiritsidwa ntchito;

C, kuyanika kwa mitambo: tsegulani nsanja yowumitsira ya mitambo, pamene kutentha kwa malo olowera chakudya pamwamba pa nsanja yowumitsira mitambo yopopera kukutenthedwa mpaka 140-150 DEG C, kufalikira kokonzeka kumaperekedwa ku malo olowera chakudya pamwamba pa nsanja yowumitsira pogwiritsa ntchito screw pump. Mu feed port, dispersion liquid imasanduka madontho ang'onoang'ono okhala ndi madontho a 10-100 microns kudzera mu centrifugal atomization disc yothamanga kwambiri mu feed port. Nthawi yomweyo, madontho ang'onoang'ono amatenthedwa mwachangu ndi mpweya wotentha kwambiri, ndipo nthawi yomweyo, release agent imawonjezedwa mu airflow yotentha kwambiri. , madontho ang'onoang'ono akatenthedwa kuti apange viscosity, release agent imamatiridwa ku madontho ang'onoang'ono pakapita nthawi, kenako madzi omwe ali mu madontho ang'onoang'ono amasanduka nthunzi mwachangu kuti aume ndi airflow yotentha kwambiri kuti apange chisakanizo cholimba ngati mpweya;

d, kuziziritsa ndi kulekanitsa: sungani kutentha kwa mpweya wotuluka mumlengalenga wa nsanja yowumitsira mpweya pa 79°C-81°C, ndipo chisakanizo cha gasi cholimba chimatumizidwa mwachangu kuchokera ku malo otulutsira mpweya pansi pa nsanja yowumitsira mpweya, kenako nkulowetsedwa mu fyuluta yayikulu ya thumba mutaziziritsa. Ufa womwe uli mu mpweya umalekanitsidwa ndipo ufa wolekanitsidwa umagawidwa m'magulu ndikusefedwa kuti mupeze ufa womalizidwa wa latex womwazikananso. Ma Embodiments Onjezani kuchuluka kwa madzi oyera molingana ndi reactor yoyera, kwezani kutentha kufika pafupifupi 50°C, yatsani makina osakaniza, onjezerani ufa woteteza wa colloid malinga ndi 25% ya kuchuluka kwa madzi omwe awonjezeredwa ku reactor, ndipo njira yowonjezera iyenera kukhala yocheperako. Onjezani kuti ufawo usasonkhanirane m'madzi. Musawonjezere kukhoma la mbali ya reactor. Mukamaliza kuwonjezera, onjezani defoamer yofanana ndi 1% ya kuchuluka konse. Ndikofunikira kugwiritsa ntchito defoamer yochokera ku silicone. Phimbani dzenje lodyetsera ndikutentha mpaka pafupifupi 95°C. Madzi omwe ali mu reaktoreyi atasungidwa kwa ola limodzi, ayenera kupangidwa kukhala guluu wowoneka bwino wokhuthala, wopanda tinthu toyera, kutengera zitsanzo, kuyesa kukhuthala ndi kuchuluka kolimba, zomwe zimafuna kukhuthala kufika pafupifupi 2500as, ndi kuchuluka kolimba kufika 19.5 ~ 20.5%. Onjezani colloid yoteteza yokonzedwa ku ketulo yosakaniza, kenako onjezerani emulsion ya polymer molingana, sakanizani colloid yoteteza ndi emulsion mofanana, ndikuwonjezera defoamer moyenera, nthawi zambiri yofanana ndi pafupifupi 0.1% ya kuchuluka konse, ndipo defoamer iyenera kugwiritsidwa ntchito ndi inu nokha. Emulsified silicone disinfectant.

Chopangira thovu, ndipo onjezerani madzi kuti musinthe kukhuthala kufika pa 70-200pas, ndi kuchuluka kolimba kufika pa 39%-42%. Kwezani kutentha kufika pa 5055C. Kuyesa kwa zitsanzo, kokonzeka kugwiritsidwa ntchito.

Madzi omwe ali m'madontho adzauma mwachangu ndi mpweya wotentha kwambiri, kenako chisakanizo cholimba cha gasi chidzatulutsidwa mwachangu kuchokera mu nsanja yowumitsira, kusunga kutentha kwa mpweya pamalo otsika otulutsira mpweya wa zida zowumitsira pa 79 ° C -81 ° Co. Chisakanizo cholimba cha gasi chimatsogozedwa kuchokera ku zida zowumitsira. Mukachoka, onjezerani mpweya wouma wa 5°C wopanda chinyezi kuti uzizire, ndipo ufa wokhala ndi mpweya umalowetsedwa mu fyuluta yayikulu ya thumba, ndipo ufa womwe uli mu mpweya umalekanitsidwa ndi njira ziwiri zolekanitsira mphepo yamkuntho ndi kulekanitsa kusefa. , Ufa wolekanitsidwa umagawidwa ndikusefedwa kuti upeze zilumba za ufa wa latex zomwe zimatha kusungunukanso.

Tengani 1,000 kg ya madzi omwazikana okhala ndi mphamvu yokwanira 42% kupita ku nsanja yowumitsira pa mphamvu inayake, ndikuwonjezera 51 kg ya mankhwala otulutsa motsatira njira yomwe ili pamwambapa nthawi yomweyo, muumitse popopera ndikulekanitsa cholimba ndi mpweya, ndipo pezani ufa wokwana 461 kg wokhala ndi kusalala koyenera.