Ungasarudza sei redispersible polymer poda?

Ungasarudza sei redispersible polymer poda?

Hapana nzira inoshanda kunze kwekuisa chigadzirwa mukuedza.

Kusarudzwa kweakakodzera redispersible latex poda inofanirwa kufunga zvinotevera zvinhu:

1. Iyo tembiricha yegirazi yekuchinja kweiyo redispersible polymer hupfu.

Iyo tembiricha yegirazi yekuchinja ndeyekuti iyo polymer inoratidza elasticity; pazasi tembiricha iyi, iyo polymer inoratidza brittleness. Iyo tembiricha yegirazi yekuchinja ye general latex poda ndeye -15±5℃, uye latex poda yevagadziri venguva dzose haina indekisi iyi. Dambudziko. Iyo tembiricha yekuchinja kwegirazi chiratidzo chikuru chehunhu hweiyo redispersible latex poda. Kune chimwe chigadzirwa, sarudzo inonzwisisika yegirazi yekuchinja tembiricha ye redispersible latex poda inobatsira kukwidziridza kuchinjika kwechigadzirwa uye kudzivirira matambudziko akadai sekuputika.

2. Minimum film kugadzira tembiricha

Mushure mokunge redispersible latex powder yakasanganiswa nemvura uye zvakare emulsified, ine zvinhu zvakafanana kune emulsion yepakutanga, kureva kuti, firimu ichaumbwa mushure mokunge mvura yapera. Iyi firimu ine yakakwirira kuchinjika uye yakanaka kunamatira kune akasiyana substrates. Yakasiyana Iyo yakaderera firimu-inogadzira tembiricha ye latex poda inogadzirwa nemugadziri ichave yakati siyanei. Indekisi yevamwe vagadziri ndeye 0°C, uye indekisi yevamwe vagadziri ndeye 5°C. Chero bedzi tembiricha yekugadzira firimu ye latex powder ine hutano hwakanaka iri pakati pe0 ne5°C pakati.

3. Redissolvability.

Inferior redispersible latex poda inonyungudika muchidimbu kana kusatombonyungudika mumvura inotonhora kana alkaline mvura.

4. Mutengo.

Izvo zvakasimba zvemu emulsion zvinenge 53%, izvo zvinoreva kuti inenge 1.9 tani ye emulsion inoporeswa mune imwe tani yerabha poda.

Kana 2% yehuwandu hwemvura ichiverengwa, ipapo 1.7 matani emulsion inoshandiswa kugadzira tani imwe yehupfu yerabha, pamwe ne10% yemadota.

Zvinotora anenge 1.5 matani emulsion kugadzira tani imwe yehupfu yerabha.

5. Aqueous solution ye latex powder

Kuti uedze viscosity yeredispersible polymer poda, vamwe vatengi vaingonyungudutsa upfu hwelatex mumvura ndokuikurunga nemaoko kuti vaedze, vakaona kuti pakanga pasina kunamira, vachifunga kuti yaisava mupfudze chaiwo.

Muchokwadi, iyo redispersible latex poda pachayo haina kunamira, ihupfu inoumbwa mushure mekunge emulsion yepolymer yapfapfaidzwa-yakaomeswa.

Kana iyo redispersible latex poda yakasanganiswa nemvura uye zvakare-emulsified, ine zvinhu zvakafanana neiyo emulsion yepakutanga, ndiko kuti, iyo firimu inoumbwa mushure mekunge mvura inoputika ine kushanduka kwepamusoro uye ine yakanaka kwazvo kunamatira kune akasiyana substrates.

Inogonawo kusimudzira kuchengetwa kwemvura kwezvinhu, kudzivirira simende dhaka kubva pakuoma nekukurumidza, kuoma uye kuputika; kuwedzera plasticity yedhaka uye kuvandudza kushanda kwekuvaka. Kupararira, firimu-kugadzira zvivakwa, kuchinjika (kusanganisira kudhonza-kunze bvunzo, kana simba rekutanga rakakodzera) kazhinji, mhinduro dzebvunzo dzinowanikwa mushure memazuva gumi.