Basa re redispersible latex poda mudhaka

1. Iyo nzira yekuita ye dispersible latex powder mudhaka

Huwandu hweemulsion polymer inogona kuumbwa nekunyungudutsa yakapararira latex poda mumvura inoshandura pore chimiro chedhaka, uye mhepo-inopinza mhepo inoderedza kuwanda kwedhaka, inoperekedzwa nekuderera kukuru kwepore uye kugovera yunifomu mune yese. . Iyo polymer inounza huwandu hukuru hwemayunifomu madiki akavharika mabhuru emhepo mudhaka resimende, izvo zvinovandudza zvakanyanya kushanda kwedhaka richangobva kusanganiswa. Panguva imwecheteyo, mabhubhu emhepo aya anogona kuvhara capillary mukati medhaka rakaoma, uye hydrophobic layer iri pamusoro pe capillary yakavharwa. Masero akavharwa; zvinonyanya kukosha, kana simende ichinge yanyoroveswa, iyo polymer inoumbawo firimu uye inonamatira kune simende hydrate kuti iite yunifomu network dhizaini, uye iyo polymer uye hydrate inopindirana kuti iite chikamu chinoenderera. Ichi chinoumbwa chimiro chinoumba iyo polymer-yakagadziridzwa simende dhaka, uye iyo aggregate inosungirirwa kune yakaomeswa dhaka neyakaumbwa zvinhu. Nekuda kweiyo yakaderera elastic modulus yepolymer, iyo yemukati yekushushikana mamiriro esamende dhaka inovandudzwa, iyo inogona kumira deformation uye kuderedza kushushikana, uye mukana we micro-cracks zvakare idiki; uyezve, iyo polymer fiber inoyambuka micro-cracks uye inoita sebhiriji uye kuzadza Mhedzisiro inodzikamisa kupararira kwekutsemuka uye inoita kuti mikoromo iparare munzvimbo dzine mapolymer akawanda. Kuderedzwa kwema micro-cracks mukati me slurry kunoderedza kunyura kwemvura kwecapillary mukati medhaka, uye iyo anti-mvura yekunyudza simba redhaka inovandudzwa panguva imwe chete.

2. Kuomesa-kunyungudika kuramba

Iko kutonhora-kunyunguduka kwehuwandu hwekurasikirwa kwecement mortar test block ne latex powder yakanyanya kuderera pane iyo yemuenzaniso pasina kuwedzera latex powder, uye nekuwedzera kwelatex powder kuwedzera, kuduku kwekurasikirwa kwevanhu vakawanda ndiko, zviri nani kutonhora. -thaw resistance ye test piece iri. , apo zvinyorwa zve latex powder zvinodarika 1.5%, chiyero chechando-thaw mass kurasikirwa chinoshanduka zvishoma.

3. Mhedzisiro ye latex powder pane mechanical properties yedhaka

Simba rekumanikidza redhaka rinoderera nekuwedzera kwe latex powder content, uye kana yakasanganiswa ne cellulose ether, simba rekumanikidza rinogona kuderedzwa zvinobudirira; iyo flexural simba uye bond simba rinowedzera nekuwedzera kwe latex powder content; Apo huwandu hwe latex powder huri pasi pe2%, simba rezvisungo zvevhu rinowedzera zvikuru, uye ipapo kuwedzera kunononoka; iyo latex poda inogona kuvandudza zvakanyanya kushanda kwakazara kwedhaka, uye iyo yakakodzera mari i2% -3% yesimende zvinhu.

4. Kukosha kwemusika uye tarisiro ye latex poda yakagadziridzwa dhaka rekutengesa

Kushandisa latex poda kushandura dhaka resimende kunogona kuburitsa poda yakaoma ine mabasa akasiyana, ayo anopa tarisiro yemusika wakakura wekutengesa kwedhaka. Kufanana nekongiri yekutengeserana, dhaka rekutengesa rine hunhu hwekugadzirwa kwepakati uye kubatana kwakabatana, izvo zvinogona kugadzira mamiriro akanaka ekutora matekinoroji matsva uye zvigadzirwa, kuita kwakasimba kudzora kwemhando, kuvandudza nzira dzekuvaka, uye kuve nechokwadi chemhando yeprojekiti. Kukwirira kwedhaka rekutengesa maererano nemhando, kushanda zvakanaka, hupfumi uye kuchengetedzwa kwezvakatipoteredza kwave kuchiratidzwa zvakanyanya pamwe nekutsvaga nekusimudzira uye kufarirwa uye kushandiswa, uye kuri kuzivikanwa zvishoma nezvishoma. Inogona kupfupikiswa mumashoko masere: rimwe rakawanda, maviri ari kukurumidza, matatu akanaka, uye mapurovhinzi mana (rimwe rakawanda, kune marudzi mazhinji; Kuchengetedza basa, kuchengetedza zvinhu, kuchengetedza mari, kusanetsekana) . Pamusoro pezvo, kushandiswa kwedhaka rekutengesa kunogona kuita kuvaka kwakabudirira, kuderedza nzvimbo dzekuisa zvinhu, uye kudzivirira guruva kubhururuka, nekudaro kuderedza kusvibiswa kwezvakatipoteredza uye kuchengetedza chitarisiko cheguta.