Nzira yekusarudza zvinowedzera mumvura ine polyurethane resin

Nzira yekusarudza sei additives mumvura ine polyurethane? Kune akawanda marudzi emvura-based polyurethane anobatsira, uye huwandu hwemashandisirwo hwakakura, asi nzira dzevabatsiri dzinoenderana. 

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Iko kuenderana kwezvinowedzera uye zvigadzirwa zvakare chinhu chekutanga kutariswa mukusarudzwa kwezvinowedzera. Mumamiriro ezvinhu akajairika, mubatsiri uye zvinhu zvinodiwa kuti zvienderane (zvakafanana mukugadzirisa) uye kugadzikana (hapana chizvarwa chitsva chezvinhu) mune zvinyorwa, kana zvisina kudaro zvakaoma kutamba basa remubatsiri.

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Iyo yekuwedzera mune yekuwedzera zvinhu inofanirwa kuchengetedza yepakutanga mashandiro ekuwedzera kwenguva yakareba pasina shanduko, uye kugona kwekuwedzera kuchengetedza kushanda kwepakutanga munzvimbo yekushandiswa kunonzi kusimba kwekuwedzera. Pane nzira nhatu dzekuti vabatsiri varasikirwe nehunhu hwavo hwepakutanga: kunyungudika (molecular uremu), kuburitsa (kunyungudika kwema media akasiyana), uye kutama (kunyungudika kwemapolymer akasiyana). Panguva imwecheteyo, iyo yekuwedzera inofanira kuva nekudzivirira kwemvura, kushorwa kwemafuta uye kushorwa kwesolvent. 

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Mukugadzirisa zvinhu, zvinowedzerwa hazvigone kushandura mashandiro ekutanga uye hazvizove nekukanganisa kugadzirwa uye kugadzirisa kwemichina uye zvekuvaka.

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Zviwedzerwa zvekushandisa kwechigadzirwa kuchinjika, zvinowedzerwa zvinoda kusangana nezvinodiwa zvezvinhu mukushandisa maitiro, kunyanya huturu hwezvinowedzera.

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Kuti uwane mhedzisiro iri nani, kushandiswa kwezviwedzere kunonyanya kusanganiswa. Pakusarudza musanganiswa, pane mamiriro maviri: imwe ndeyekusanganiswa kwekushandisa kuti uwane mhedzisiro yakanaka, uye imwe yacho ndeyezvinangwa zvakasiyana, senge kwete chete kuenzana asiwo kubvisa furo, kwete chete kuwedzera chiedza asiwo antistatic. Izvi ndezvekufunga: mune imwecheteyo nyaya inoburitsa synergies pakati pezvinowedzera (yakazara mhedzisiro yakakura kupfuura huwandu hwemhedzisiro yekushandiswa kumwe chete), iyo yekuwedzera mhedzisiro (yakazara mhedzisiro yakaenzana nehuwandu hwemhedzisiro yekushandisa kamwe chete) uye iyo antagonistic mhedzisiro (yakazara mhedzisiro ishoma pane huwandu hwemhedzisiro yekushandiswa kumwe chete), saka iyo yakanakisa nguva yekugadzira synergies, kudzivirira iyo antagonistic mhedzisiro.

 

Mukugadzirwa kwemvura-based polyurethane kuti uwedzere imwe mhando yezvinowedzera, zvakakosha kubhadhara kune basa rayo mumatanho akasiyana-siyana ekuchengetedza, kuvaka, kushandiswa, uye kuongorora uye kuongorora basa rayo uye maitiro muchikamu chinotevera. 

Semuenzaniso, apo mvura-based polyurethane pendi inoshandiswa nekunyorova uye kuparadzira vamiririri, inoita basa rakati mukuchengetedza nekuvaka, uye yakanakawo kune ruvara rwefirimu yepende. Iko kunowanzoita simba guru, uye panguva imwechete inokonzera mutsara wezvakanaka panguva imwe chete, zvakadai sekushandiswa kwesilicon dioxide, kune kupera kwekuita, uye kunwa kwemvura, pamusoro pekudzivirira-kunamatira uye mamwe maitiro akanaka.

Mukuwedzera, mukushandiswa kweimwe mumiririri inogona kuva nemigumisiro yakaipa, yakadai sekuwedzera kwesilicon-containing defoaming agent, iyo inosvibisa iyo inokosha, inogona kuwana mhedzisiro inobatsira, asiwo kuongorora kana kune gomba rekuputsika. , haina makore, haina kukanganisa recoating uye zvichingodaro. Zvese mune zvese, mashandisirwo ezviwedzere, mukuongorora kwekupedzisira, maitiro anoshanda, uye chete chirevo chekuongorora chinofanira kunge chiri kunaka kwemhedzisiro yekushandisa.