Redispersible latex ufa RDP ntchito ndi mamasukidwe akayendedwe mayeso njira

Redispersible polima ufa (RDP) ndi copolymer wa vinyl acetate ndi ethylene, makamaka ntchito ngati binder mu zomangamanga.Imawongolera mphamvu, kulimba ndi kumamatira kwa zinthu zopangidwa ndi simenti popanga filimu yokhazikika panthawi yowumitsa.RDP ndi ufa woyera wouma womwe umayenera kumwazidwanso m'madzi musanagwiritse ntchito.Katundu ndi kukhuthala kwa RDP ndizofunikira kwambiri chifukwa zimakhudza mtundu wa chinthu chomaliza.Nkhaniyi ikufotokoza momwe RDP imagwirira ntchito komanso njira zoyezera kukhuthala komwe kungathandize opanga kukonza zinthu ndikuwonetsetsa kukhutitsidwa kwamakasitomala.

Njira yoyesera ntchito ya RDP

Njira yoyesera ya RDP idapangidwa kuti iwunikire kuthekera kwa RDP kupititsa patsogolo magwiridwe antchito azinthu zopangidwa ndi simenti.Njira yoyesera ili motere:

1. Kukonzekera zinthu

Konzani zipangizo zotsatirazi: RDP, Portland simenti, mchenga, madzi, ndi plasticizer.Sakanizani simenti ya Portland ndi mchenga mu chiŵerengero cha 1: 3 kuti mupeze kusakaniza kouma.Konzani yankho posakaniza madzi ndi plasticizer mu chiŵerengero cha 1: 1.

2. kusakaniza

Sakanizani RDP ndi madzi mu blender mpaka homogeneous slurry itapezeka.Onjezerani slurry kuti muwume kusakaniza ndikusakaniza kwa mphindi ziwiri.Onjezani yankho la pulasitiki lamadzi ndikusakaniza kwa mphindi zina 5.Chotsatiracho chisakanizecho chiyenera kukhala ndi kusakanikirana kochuluka, kokoma.

3. Ikani

Pogwiritsa ntchito trowel, tambani chisakanizocho mpaka kufika 2mm pa malo oyera, owuma, ophwanyika.Gwiritsani ntchito chodzigudubuza kuti muwongolere pamwamba ndikuchotsa thovu la mpweya.Lolani zitsanzo zichiritsidwe kutentha kwa masiku 28.

4. Kuunikira ntchito

Zitsanzo zochiritsidwa zidawunikidwa pazinthu zotsatirazi:

- Mphamvu yopondereza: Mphamvu yopondereza idayezedwa pogwiritsa ntchito makina oyesa padziko lonse lapansi.Mphamvu yopondereza iyenera kukhala yayikulu kuposa chitsanzo chowongolera popanda RDP.
- Flexural Strength: Mphamvu yosunthika idayesedwa pogwiritsa ntchito kuyesa kwa mfundo zitatu.Mphamvu yosinthika iyenera kukhala yapamwamba kuposa chitsanzo chowongolera popanda RDP.
- Mphamvu Zomatira: Mphamvu zomatira zimayezedwa pogwiritsa ntchito kuyesa kukoka.Mphamvu ya mgwirizano iyenera kukhala yapamwamba kuposa chitsanzo chowongolera popanda RDP.
- Kukana madzi: Zitsanzo zochiritsidwa zidamizidwa m'madzi kwa maola 24 ndipo katunduyo adawunikidwanso.Kuchita kwake sayenera kukhudzidwa kwambiri mutatha kukhudzana ndi madzi.

Njira yoyeserera kagwiridwe ka ntchito ya RDP imatha kupereka zolinga komanso kuchuluka kwa momwe RDP imathandizira pakuwongolera magwiridwe antchito azinthu zopangidwa ndi simenti.Opanga atha kugwiritsa ntchito njira iyi kuti akwaniritse bwino mapangidwe a RDP ndikuwonetsetsa kuti zinthu zili bwino.

RDP Viscosity Test Njira

Njira yoyesera ya RDP viscosity idapangidwa kuti iwunikire momwe RDP imayendera m'madzi.Njira yoyesera ili motere:

1. Kukonzekera zinthu

Konzani zipangizo zotsatirazi: RDP, madzi opangidwa ndi deionized, viscometer, ndi calibration fluid.Kuchuluka kwa mamasukidwe akayendedwe a calibration fluid kuyenera kukhala kofanana ndi kukhuthala koyembekezeka kwa RDP.

2. Muyezo wa viscosity

Yezerani mamasukidwe amadzimadzi a calibration ndi viscometer ndikulemba mtengo wake.Sambani viscometer ndikudzaza ndi madzi a deionized.Yezerani kukhuthala kwamadzi ndikulemba mtengo wake.Onjezani kuchuluka kodziwika kwa RDP m'madzi ndikugwedezani pang'onopang'ono mpaka kusakaniza kofanana kumapezeka.Lolani kusakaniza kukhala kwa mphindi 5 kuti muchotse thovu la mpweya.Yezerani kukhuthala kwa osakaniza pogwiritsa ntchito viscometer ndikulemba mtengo wake.

3. Werengani

Kuwerengera kukhuthala kwa RDP m'madzi pogwiritsa ntchito njira iyi:

RDP Viscosity = (Mixture Viscosity – Water Viscosity) / (Calibration Fluid Viscosity – Water Viscosity) x Calibration Fluid Viscosity

Njira yoyeserera ya RDP viscosity test imapereka chizindikiritso cha momwe RDP imabalalika mosavuta m'madzi.The apamwamba mamasukidwe akayendedwe, ndi zovuta redispersibility, pamene m'munsi mamasukidwe akayendedwe, mofulumira ndi kutsiriza redispersibility.Opanga angagwiritse ntchito njirayi kuti asinthe kapangidwe ka RDP ndikuwonetsetsa kuti kuyambiranso kutha.

Pomaliza

Katundu wa RDP ndi njira zoyesera zama viscosity ndi zida zofunika zowunikira mtundu wa RDPs ndikuwongolera mapangidwe awo.Pogwiritsa ntchito njirazi, opanga angathe kuonetsetsa kuti katundu wawo wa RDP akukwaniritsa zofunikira komanso zosavuta zogwiritsira ntchito, motero amawonjezera kukhutira ndi kukhulupirika kwa makasitomala.Opanga amalangizidwa kuti atsatire njira zoyezetsa zokhazikika ndikugwiritsa ntchito zida zoyeserera kuti zitsimikizire zolondola komanso zodalirika.Pamene ukadaulo wa RDP ukupitilirabe, kufunikira kwa zinthu za RDP zogwira ntchito kwambiri komanso zosavuta kugwiritsa ntchito kukuyembekezeka kuwonjezeka mtsogolo.