Zvinhu zvinokanganisa kuchengetedza mvura kwe cellulose ethers

Cellulose ethers imhando yakakosha yezvinhu zvepolymer zvinonyungudika mumvura, zvinoshandiswa zvakanyanya mukuvaka, mishonga, chikafu, makemikari ezuva nezuva nemamwe maindasitiri. Mubasa rekuvaka (senge dhaka rakasanganiswa rakaoma, tile adhesive, putty powder, nezvimwewo), chimwe chezvinhu zvakakosha zveethers dze cellulosekuchengetedza mvura, kureva kuti, inogona kuchengetedza mvura musystem panguva yekushandiswa kudzivirira mvura kuti isatsve kana kunyudzwa nekukurumidza, nokudaro ichivimbisa kugadzirwa uye kushanda kwekupedzisira kwechinhu chacho. Pane zvinhu zvakawanda zvinokanganisa kuchengetedza mvura kwe cellulose ethers, kunyanya zvinosanganisira chimiro chayo chemakemikari, mwero wekutsiva, viscosity, huwandu hwekuwedzera, saizi yezvikamu, mwero wekunyungudika, uye zvinhu zvekunze zvakatipoteredza.

1. Zvinhu zve cellulose ethers pachavo

Dhigirii rekutsiva (DS) uye kufanana

Dhigirii rekutsiva rinoreva huwandu hwema hydroxyl groups muma cellulose molecules akatsiviwa nema ether groups. Kazhinji, kana division yacho yakakwira, hydrophilicity ye cellulose ethers inowedzera simba uye kugona kwayo kuchengetedza mvura kunowedzera. Zvisinei, kunewo kukosha kwakakosha. Kukosha kwakanyanya kunotungamira mukunyungudika kwakanyanya uye mafuta akawandisa, izvo zvinokanganisa kugadzikana kwechimiro chezvinhu.

Kufanana kwekutsiva kwakakoshawo. Kana kutsiva kwacho kwakafanana, chimiro che network chinoumbwa ne cellulose ether mumvura chinogadzikana, uye chinokwanisa kuvharira hunyoro zvakanaka.

Kusviba

Kuwanda kwe cellulose ether mumvura kunokanganisa zvakananga "kugona kwayo kuvhara" hunyoro. Kazhinji, ma ether e cellulose ane viscosity yakakura (akadai seHPMC, HEMC, nezvimwewo) anogona kugadzira network ine denser three-dimensional network, kuderedza kumhanya kwekufamba kwemvura, uye nokudaro kuvandudza kuchengetedza mvura. Zvisinei, viscosity yakanyanya inokanganisa kushanda kwezvinhu, zvakaita sekuoma kwekuvaka kana kupeta kusina kufanana.

Kurema kwemasero uye chiyero chekupomera

Kana huremu hwemamorekuru e cellulose ether hwakakura, kupindirana pakati pezvikamu zvecheni kwakasimba, colloidal solution inoumbwa inowedzera kusimba, uye kuchengetwa kwemvura kwakasimba. Zvisinei, panofanira kuenzaniswa pakati pekuchengetedzwa kwemvura yakawanda uye nyore kunyunguduka.

Saizi yezvikamu uye kupararira

Saizi yehupfu hwe cellulose ether husina kucheneswa inokanganisa mwero wekunyungudika kwayo uye kupararira kwayo mumvura. Hukuru hwehupfu hudiki, mwero wekunyungudika unokurumidza, uye zviri nyore kugoverwa zvakaenzana muchinhu chacho, nokudaro zvichiita basa riri nani mukuchengetedza mvura. Zvisinei, hupfu hwakatsetseka zvakanyanya huri nyore kunyudza hunyoro uye kuungana panguva yekuchengetera nekutakura, zvichikanganisa mashandiro.

2. Shandisa fomura nezvinhu zvine chekuita nehurongwa

Huwandu hwekuwedzera

Huwandu hwe cellulose ether inowedzerwa mufomura hunokanganisa zvakananga mashandiro ekuchengetedza mvura. Kazhinji, sezvo huwandu hwekuwedzera huchiwedzera, kuchengetedza mvura kunovandudzwa zvakanyanya, asi mushure mekupfuura huwandu hwakati, mhedzisiro yekuwedzera ichaita kuti isanyanye kuwanda, uye zvinokanganisawo mutengo uye mashandiro ekuvaka.

Kunyudzwa kwemvura kwezvimwe zvinhu zvakagadzirwa

Kunyudzwa kwemvura kwezvinhu zvakaita sesimende, gypsum, jecha, nezvimwewo zvinokanganisawo kuchengetwa kwemvura. Zvinhu zvine kunyudzwa kwakasimba kwemvura zvinokurumidza kunyudzwa mvura kubva musystem, zvinokurumidzisa kuoma, uye zvinoita kuti kuchengetwa kwemvura kwecellulose ether kuve kwakakosha. Saka, mumhando iyi yesystem, cellulose ether ine viscosity yakakwira kana huwandu hwakawanda hwekuwedzera hunodiwa.

Chiyero chemvura nesimende (W/C)

Muzvinhu zvekuvaka, shanduko muhuwandu hwemvura nesimende inokanganisawo kuchengetwa kwemvura kwe cellulose ether. Kana huwandu hwemvura nesimende hwakaderera, mvura shoma musystem, uye kumanikidzwa kwemvura kwe cellulose ether kwakawanda; kana huwandu hwemvura nesimende hwakakwira, mvura yakakwana musystem, uye cellulose ether inogona kunonotsa kurasikirwa nemvura.

3. Zvinhu zvakatipoteredza

Tembiricha

Kupisa kwakanyanya kuchakurumidzisa mwero wekubuda kwemvura, uye kuchawedzera zvinodiwa kuti cellulose ether ichengetwe nemvura. Kunyanya munzvimbo dzinopisa uye dzakaoma, kana cellulose ether isingachengetwe mvura zvakanaka, zviri nyore kukonzera kuti mortar, putty nezvimwe zvinhu zvekuvaka zvitsemuke, upfu uye simba risakwane.

Zvinofanira kucherechedzwa kuti kunyungudika kwe cellulose ether pakupisa kwakanyanya kuchachinjawo, uye mamwe marudzi achachinja gel, zvichikanganisa mashandiro ayo ekudzora hunyoro.

Hunyoro nekumhanya kwemhepo

Kana hunyoro hwemhepo hwakaderera uye kumhanya kwemhepo kwakakwira, kubuda kwemvura kunowedzera, uye sisitimu yacho inogona kurasikirwa nemvura, izvo zvinoda mushonga unoshanda zvakanaka wekugadzirisa dambudziko iri. Munzvimbo ine hunyoro hwakawanda, mvura haisi nyore kurasikirwa nayo, uye kumanikidzwa kwekuchengetedza mvura kwe cellulose ether kudiki.

4. Zvinhu zvekuvaka

Ukobvu hwekuputira uye nzira yekushanda

Kuputira jira rakatetepa kunogona kurasikirwa nemvura kupfuura jira rakatetepa, saka kuvakwa kwejira rakatetepa kunonyanya kutsamira pa cellulose ether ine mvura yakawanda inochengetwa. Panguva imwe chete, kusanganisa kwakafanana, nzira yekuputira (yemakanika kana yemaoko), mwero wekunyudzwa kwemvura mu substrate, nezvimwewo zvinokanganisawo mashandiro chaiwo ekuchengetedza mvura.

Kunyudzwa kwemvura kwe substrate

Semuenzaniso, kunyudzwa kwemvura kwemidziyo yakaita sezvidhinha, kongiri, uye gypsum board kwakasiyana, izvo zvinokanganisa kugona kwe cellulose ether kuchengetedza mvura. Kana substrate ichinyudzwa zvakanyanya, inokurumidza kunyudzwa mvura kubva mumortar, uye cellulose ether inofanira kukurumidza kugadzira chipingamupinyi chinochengetedza mvura.

Iyohunhu hwekuchengetedza mvura hwe cellulose etherHunhu hwacho hunoenderana nezvinhu zvakawanda. Maumbirwo ahwo (akadai sedanho rekutsiva, viscosity, saizi yezvikamu), nzvimbo yekushandisa (tembiricha, hunyoro, kumhanya kwemhepo) uye fomura yekuvaka (huwandu hwekuwedzera, chiyero chemvura nesimende, hunhu hwezvinhu zvakabikwa) zvichave nemhedzisiro yakakura pakushanda kwayo. Saka, mukushandiswa, mhando nehuwandu hwe cellulose ether zvinofanirwa kusarudzwa zvine musoro zvichienderana nemamiriro chaiwo ekushandiswa uye dhizaini yefomura kuti uwane mhedzisiro yakanakisa yekuchengetedza mvura uye mashandiro ekuvaka.