Kusankha polima yoyenera ya RDP yomatira matailosi ndi mapangidwe a putty

Zomatira za matailosi ndi ma putty formulations ndizofunikira pamakampani omanga. Amagwiritsidwa ntchito kulumikiza matailosi a ceramic kumadera osiyanasiyana, kuphatikiza makoma ndi pansi. Gawo lofunikira lazinthu izi ndi RDP polima. RDP imayimira Redispersible Polymer Powder, yomwe ndi copolymer ya vinyl acetate ndi ethylene. Ma polima amatenga gawo lofunikira pakupanga zomatira ndi ma putty ndipo amakhudza zinthu zosiyanasiyana, kuphatikiza kumamatira, kulumikizana, kulimba komanso kusinthika. Nkhaniyi ifotokoza zomwe muyenera kuziganizira posankha polima yoyenera ya RDP komanso momwe zimakhudzira zomatira matailosi ndi mapangidwe a putty.

1. Kumamatira

Kumamatira ndiko kuthekera kwa chinthu kumamatira kumalo osiyanasiyana. Zomatira za ma polima a RDP zimadalira kapangidwe kake, kulemera kwa maselo ndi kuchuluka kwa kulumikizana kwa polima. Kapangidwe kakemidwe ka RDP polima kumatsimikizira mitundu ya malo omwe amagwirizana nawo. Mwachitsanzo, chigawo cha vinyl acetate cha polima chimakhala chomamatira kwambiri kumalo osakhala a polar monga PVC ndi PE. Ethylene, kumbali ina, imakhala yomatira kwambiri pamalo a polar monga konkire ndi matabwa.

Kuti tikwaniritse zomatira zolimba, tikulimbikitsidwa kugwiritsa ntchito ma polima olemera kwambiri a RDP. Ma polima apamwamba kwambiri amapangira mphamvu zama intermolecular, zomwe zimapangitsa kuti azimatira bwino. Mlingo wolumikizirana umakhudza kusungunuka kwa polima ya RDP ndipo motero zomatira zake. Ma polima ophatikizika kwambiri sasungunuka ndipo amakhala ndi zomatira zochepa kuposa ma polima olumikizana pang'ono.

2. Mgwirizano

Mgwirizano umatanthawuza kuthekera kwa chinthu kuti chidzikanire chokha. Makhalidwe ogwirizana a ma polima a RDP amagwirizana ndi kutentha kwa magalasi (Tg) a polima. Tg ya polima ya RDP imatsimikizira kutentha komwe polima amasintha kuchokera ku raba kupita ku mawonekedwe agalasi. Ma polima okhala ndi Tg pamwamba pa kutentha kwa chipinda amawonetsa mgwirizano wabwino kwambiri, pomwe ma polima okhala ndi Tg pansi pa kutentha kwa chipinda amawonetsa kusalumikizana bwino.

Kuti mugwirizane bwino, tikulimbikitsidwa kugwiritsa ntchito ma polima a RDP okhala ndi Tg pamwamba pa kutentha kwa chipinda. Ma polima apamwamba a Tg amapanga mphamvu zolimba za intermolecular, zomwe zimapangitsa mgwirizano wabwino. Ndikulimbikitsidwanso kugwiritsa ntchito ma polima olemera kwambiri a RDP kuti apititse patsogolo mgwirizano.

3. Kukhalitsa

Kukhalitsa ndi chinthu chofunikira cha zomatira matailosi ndi mapangidwe a putty. Kukhazikika kwa ma polima a RDP kumakhudzidwa ndi kukana kwawo madzi, kutentha ndi kuwonongeka kwa UV. Chigawo cha vinyl acetate cha RDP polima chimakhudzidwa ndi hydrolysis, zomwe zimapangitsa kuti pakhale kukhazikika kwachinyontho.

Kuti mukhale olimba, tikulimbikitsidwa kugwiritsa ntchito ma polima a RDP okhala ndi ethylene wambiri. Vinyl ili ndi mphamvu zabwino kwambiri zolimbana ndi madzi komanso chinyezi motero imakhala yolimba bwino. Ma polima a RDP okhala ndi vinyl acetate otsika amawonetsanso kulimba kwambiri. Kuphatikiza apo, ma polima a RDP okhala ndi kukana kwa UV amalimbikitsidwa kuti agwiritse ntchito kunja.

4. Processability

Kugwira ntchito kumatanthauza kumasuka kwa kugwiritsa ntchito zomatira matailosi ndi mafomu a putty. Kuthekera kwa ma polima a RDP kumakhudzidwa ndi kukula kwake, kachulukidwe kake, komanso kubalalitsidwa. Ma polima ang'onoang'ono a RDP amawonetsa kusinthika kwabwino chifukwa amabalalika mwachangu m'madzi, zomwe zimapangitsa kuti pakhale zomatira kapena zosakaniza zosalala. Kuphatikiza apo, ma polima a RDP okhala ndi kachulukidwe kakang'ono kocheperako amawonetsa kusinthika kwabwino chifukwa amafunikira khama losakanikirana.

Kupititsa patsogolo processability, tikulimbikitsidwa kugwiritsa ntchito ma polima a RDP okhala ndi tinthu tating'onoting'ono komanso osalimba kwambiri. Kuphatikiza apo, tikulimbikitsidwa kugwiritsa ntchito ma polima a RDP okhala ndi dispersibility yayikulu m'madzi kuti akwaniritse kubalalitsidwa mwachangu komanso zosakaniza zosalala.

Pomaliza

Kusankha polima yoyenera ya RDP yomatira matailosi ndi mapangidwe a putty ndikofunikira kuti mukwaniritse zogulitsa zabwino kwambiri. Kulumikizana, kulumikizana, kulimba komanso kusinthika kwa polima kumakhudza momwe zinthu zimagwirira ntchito. Zomwe muyenera kuziganizira posankha polima ya RDP yoyenera ndi monga kapangidwe kake ka mankhwala, kulemera kwa maselo, kuchuluka kwa kulumikizana, kutentha kwa magalasi, kukana madzi, kutentha ndi kuwonongeka kwa UV, kukula kwa tinthu, kuchulukirachulukira komanso kubalalitsidwa. Kuganizira mozama pazifukwa izi kungapangitse kuti pakhale kusankha koyenera kwa ma polima a RDP komanso zomatira bwino za matailosi ndi mapangidwe a putty.