{"id":8,"date":"2026-02-09T09:58:05","date_gmt":"2026-02-09T09:58:05","guid":{"rendered":"https:\/\/levellingagent.net\/?p=8"},"modified":"2026-02-10T08:38:42","modified_gmt":"2026-02-10T08:38:42","slug":"hvernig-jofnunarefni-virkar-i-raun-visindin-a-bak-vid-fullkomna-yfirbordsaferd","status":"publish","type":"post","link":"https:\/\/levellingagent.net\/is\/hvernig-jofnunarefni-virkar-i-raun-visindin-a-bak-vid-fullkomna-yfirbordsaferd\/","title":{"rendered":"Hvernig sl\u00e9ttiefni virkar \u00ed raun: V\u00edsindin \u00e1 bak vi\u00f0 fullkomna yfirbor\u00f0s\u00e1fer\u00f0"},"content":{"rendered":"<div class=\"h-fit md:ml-2 lg:ml-0 css-1ap07mx\">\n<h1>Hvernig sl\u00e9ttiefni virkar \u00ed raun: V\u00edsindin \u00e1 bak vi\u00f0 fullkomna yfirbor\u00f0s\u00e1fer\u00f0<\/h1>\n<p>Yfirbor\u00f0sspenna getur gert e\u00f0a ey\u00f0ilagt fullkomna \u00e1fer\u00f0. Jafnunarefni vinna bak vi\u00f0 tj\u00f6ldin til a\u00f0 draga \u00far yfirbor\u00f0sspennu vatns \u00far n\u00e1tt\u00farulegum 72 mN\/m ni\u00f0ur \u00ed 15\u201320 mN\/m, allt eftir efnasamsetningu \u00feeirra. Vi\u00f0 sj\u00e1um \u00e1rangur g\u00f3\u00f0rar jafnunar en skiljum sjaldan v\u00edsindin sem gera \u00fea\u00f0 m\u00f6gulegt.<\/p>\n<p>\u00deessir s\u00e9rh\u00e6f\u00f0u b\u00e6tiefni virka me\u00f0 \u00fev\u00ed a\u00f0 mynda jafnt lag vi\u00f0 loft-v\u00f6kva vi\u00f0m\u00f3t. \u00deetta kemur \u00ed veg fyrir \u00f3j\u00f6fna gufun og skapar sl\u00e9ttari yfirbor\u00f0 me\u00f0 betri glj\u00e1a. J\u00f6fnunarefni gegna mikilv\u00e6gu hlutverki vi\u00f0 a\u00f0 laga marga galla sem mikil yfirbor\u00f0sspenna veldur \u00ed h\u00fa\u00f0unum. Sum efni leysast upp \u00ed vatni, en leysanleiki \u00feeirra breytist me\u00f0 hitastigi. \u00deau ver\u00f0a \u00f3leysanleg eftir a\u00f0 \u00feau n\u00e1 \u00fev\u00ed sem kalla\u00f0 er sk\u00fdjunarpunktur.<\/p>\n<p>\u00deessi grein mun hj\u00e1lpa \u00fe\u00e9r a\u00f0 skilja efnafr\u00e6\u00f0i sem liggur a\u00f0 baki \u00feessum form\u00faluefnum. Vi\u00f0 munum fjalla um mismunandi ger\u00f0ir sl\u00e9ttiefna og veita \u00fe\u00e9r \u00feekkingu til a\u00f0 velja r\u00e9tt sl\u00e9ttiefni fyrir notkun \u00fe\u00edna. A\u00f0 skilja hvernig \u00feessi efni breyta yfirbor\u00f0seiginleikum mun hj\u00e1lpa \u00fe\u00e9r a\u00f0 n\u00e1 fullkomnu, gallalausu yfirbor\u00f0i \u00e1vallt.<\/p>\n<h2>Af hverju \u00feurfa yfirbor\u00f0sfullkomnunar efni sl\u00e9ttiefni<\/h2>\n<p>Til a\u00f0 n\u00e1 fullkomnum h\u00fa\u00f0unum \u00fearf yfirbor\u00f0 \u00e1n galla, en \u00fea\u00f0 er st\u00f6\u00f0ug \u00e1skorun \u00ed i\u00f0na\u00f0arums\u00f3knum. Gallar \u00ed h\u00fa\u00f0un geta ey\u00f0ilagt b\u00e6\u00f0i \u00fatlit og virkni \u00feegar framlei\u00f0endur nota ekki vi\u00f0eigandi jafnandi efni.<\/p>\n<h3>Algengir yfirbor\u00f0sgallar: appels\u00ednuh\u00fa\u00f0, kr\u00e1ttur, n\u00e1larg\u00f6t<\/h3>\n<p><strong>Appels\u00ednuh\u00fa\u00f0<\/strong> Gerir yfirbor\u00f0 a\u00f0 l\u00edta korn\u00f3tt og \u00e1fer\u00f0armikil \u00fat, l\u00edkt s\u00edtrusberki. M\u00e1lningardropar sem sameinast ekki r\u00e9tt vi\u00f0 \u00e1fer\u00f0 skapa h\u00e6\u00f0ir og dali \u00e1 yfirbor\u00f0inu. Rangar \u00e1fer\u00f0ar\u00ada\u00f0fer\u00f0ir, r\u00f6ng seigja m\u00e1lningarins e\u00f0a m\u00e1lning me\u00f0 r\u00f6ngu leysiefnahlutfalli valda yfirleitt \u00feessum algenga galla.<\/p>\n<p><strong>G\u00edgar<\/strong> Birti \u00feegar mengun veldur mismun yfirbor\u00f0sspennu. H\u00fa\u00f0unin n\u00e6r ekki a\u00f0 hylja bletti \u00fear sem efni me\u00f0 l\u00e6gri yfirbor\u00f0sspennu l\u00e1ta v\u00f6kvann renna burt, sem myndar litlar, sk\u00e1lalaga d\u00e6ldir. \u00deessir blettir ver\u00f0a s\u00fdnilegir gallar.<\/p>\n<p><strong>N\u00e1larholur<\/strong> Birti sig sem \u00f6rsm\u00e1ir punktar e\u00f0a kraterl\u00edkar skemmdir \u00feegar loft e\u00f0a leysiefni sem hafa festst fl\u00fdja \u00fat \u00ed gegnum \u00feornandi h\u00fa\u00f0un. Sl\u00e6m yfirbor\u00f0sundirb\u00faningur, \u00feykk h\u00fa\u00f0unarl\u00f6g e\u00f0a of stuttur \u00feurrkunart\u00edmi milli laga valda oft \u00feessum litlu g\u00f6llum.<\/p>\n<h3>Hlutverk yfirbor\u00f0sspennu \u00ed jafnri \u00feekju<\/h3>\n<p>Yfirbor\u00f0sspenna hefur mikil \u00e1hrif \u00e1 \u00fatbrei\u00f0slu og jafnun m\u00e1lningar. A\u00f0dr\u00e1ttarafl milli n\u00e1l\u00e6gra sameinda \u00e1 yfirbor\u00f0i m\u00e1lningarins veldur \u00feessari spennu. M\u00e1lning bleytir sig ekki r\u00e9tt og holur geta myndast \u00feegar yfirbor\u00f0sspenna ver\u00f0ur of mikil. M\u00e1lningin jafnar sig illa og f\u00e6r appels\u00ednuh\u00fa\u00f0\u00e1hrif \u00feegar yfirbor\u00f0sspenna l\u00e6kkar of miki\u00f0.<\/p>\n<p>Til a\u00f0 gera h\u00fa\u00f0un jafna \u00fearf a\u00f0 n\u00e1 jafnv\u00e6gi milli \u00feessara andst\u00e6\u00f0u afla. T\u00edminn sem \u00fearf til a\u00f0 sl\u00e9tta fer beint eftir seigju og \u00f6fugt eftir yfirbor\u00f0sspennu og filmu\u00feykkt.<\/p>\n<h3>\u00c1hrif l\u00e9legrar jafningunar \u00e1 frammist\u00f6\u00f0u v\u00f6ru<\/h3>\n<p>Sl\u00e6m j\u00f6fnun veldur meira en bara \u00fev\u00ed a\u00f0 skemma \u00fatlit \u2013 h\u00fan hefur \u00e1hrif \u00e1 virkni v\u00f6runnar. \u00d3j\u00f6fn \u00feykkt h\u00fa\u00f0unar dregur \u00far vernd og gerir v\u00f6rur minna endingarg\u00f3\u00f0ar me\u00f0 skemmra l\u00edft\u00edma. \u00d3reglulegt yfirbor\u00f0 skapar \u00f3st\u00f6\u00f0ugan h\u00f6rkun og slit\u00feol eftir \u00feurrkun.<\/p>\n<p>H\u00e1g\u00e6\u00f0a forrit gl\u00edma vi\u00f0 r\u00fdr\u00f0a lj\u00f3sg\u00e6\u00f0i vegna yfirbor\u00f0sgalla. Lj\u00f3s lekur \u00ed gegnum s\u00edur, myndgreining s\u00fdnir galla og lj\u00f3s\u00fe\u00e9ttleiki dregst saman jafnvel vegna \u00f6rsm\u00e1tra galla. I\u00f0na\u00f0arh\u00fa\u00f0un sem gl\u00edmir vi\u00f0 \u00feessi vandam\u00e1l bilar snemma, missir glansinn og veitir minni v\u00f6rn en \u00e6tlast er til.<\/p>\n<h2>Efnafr\u00e6\u00f0i bak vi\u00f0 stigah\u00e6kkunarefni<\/h2>\n<p>Sameindavi\u00f0skipti \u00e1 \u00f6rsm\u00e6tan stig \u00e1kvar\u00f0a hvernig h\u00fa\u00f0un dreifist og jafnar sig. Form\u00faluger\u00f0armenn geta vali\u00f0 r\u00e9tt b\u00e6tiefni me\u00f0 \u00fev\u00ed a\u00f0 skilja \u00feessi samskipti.<\/p>\n<h3>Surfaktantami\u00f0a\u00f0ir vs. p\u00f3l\u00fdmermi\u00f0a\u00f0ir lyf<\/h3>\n<p>J\u00f6fnunarefni koma \u00ed tvennum megin efnaflokkum, hvorum me\u00f0 s\u00edn s\u00e9rst\u00f6ku afkastareiginleika. Yfirbor\u00f0svirk efni bygg\u00f0 \u00e1 kolefnisvetni og fl\u00faorkolefni virka \u00e1 mismunandi h\u00e1tt. Kolefnisvetnis-yfirbor\u00f0svirk efni eru \u00f3d\u00fdrari \u00e1 k\u00edl\u00f3 en fl\u00faorkolefnisvalkostir virka betur vi\u00f0 l\u00e6gra styrk. \u00de\u00fa \u00fearft a\u00f0eins 0,01% \u00ed vatnsbundnum og 0,2% \u00ed leysibundnum form\u00falum. P\u00f3l\u00fdmerbundin efni, s\u00e9rstaklega p\u00f3l\u00fdakr\u00fdlatar, virka vel me\u00f0 alls konar epox\u00fdkerfum. \u00dear \u00e1 me\u00f0al eru akr\u00fdl-melam\u00edn-, 2K PU-, alk\u00fdd- og p\u00f3l\u00fdesterform\u00falur. \u00deessi efni b\u00faa til einsleit yfirbor\u00f0 \u00e1n mikilla breytinga \u00e1 yfirbor\u00f0sspennu, sem stu\u00f0lar a\u00f0 sl\u00e9ttu jafnri.<\/p>\n<h3>Breyting \u00e1 yfirbor\u00f0sspennu og blautnunarheg\u00f0un<\/h3>\n<p>J\u00f6fnun virkar me\u00f0 \u00fev\u00ed a\u00f0 stj\u00f3rna yfirbor\u00f0sspennu. \u00deetta gerist vegna \u00feess a\u00f0 sameindir \u00ed yfirbor\u00f0slaginu ver\u00f0a fyrir \u00f3j\u00f6fnum krafti mi\u00f0a\u00f0 vi\u00f0 \u00fe\u00e6r sem eru innar \u00ed laginu. Yfirbor\u00f0sspenna og j\u00f6fnun fylgja sk\u00fdrri st\u00e6r\u00f0fr\u00e6\u00f0ilegri reglu. J\u00f6fnunart\u00edminn fer eftir seigju og er \u00f6fugfall af yfirbor\u00f0sspennu og \u00feref\u00f6ldu \u00feykkt filmu. Fl\u00faorkolefnis-yfirbor\u00f0svirk efni geta l\u00e6kka\u00f0 yfirbor\u00f0sspennu h\u00fa\u00f0ar ni\u00f0ur \u00ed 20 d\u00fdna \u00e1 cm e\u00f0a l\u00e6gra. \u00devert \u00e1 m\u00f3ti l\u00e6kka yfirbor\u00f0svirk efni sem byggja \u00e1 kolefnisvetni yfirbor\u00f0sspennu yfirleitt ni\u00f0ur \u00ed 28\u201335 d\u00edn\/sm. \u00dea\u00f0 er mikilv\u00e6gt a\u00f0 finna r\u00e9tta jafnv\u00e6gi\u00f0. Of mikil yfirbor\u00f0sspenna veldur vottunarvandam\u00e1lum og holum, en of l\u00edtil skapar bylgj\u00f3tt yfirbor\u00f0 og appels\u00ednuh\u00fa\u00f0\u00e1hrif.<\/p>\n<h3>Virkni me\u00f0 leysiefnum og har\u00f0v\u00f6rum vi\u00f0 myndun kvikmyndamyndar<\/h3>\n<p>Vi\u00f0 \u00feurrkun flytjast j\u00f6fnunarefni a\u00f0 v\u00f6kva-loft vi\u00f0m\u00f3ti og ra\u00f0a s\u00e9r \u00e1 yfirbor\u00f0i\u00f0. Vali\u00f0 \u00e1 leysiefni skiptir miklu m\u00e1li fyrir hversu vel j\u00f6fnun gengur. H\u00e1frysisleysanir halda seigju l\u00e1g og h\u00e6gja \u00e1 aukningu hennar eftir \u00e1fer\u00f0. Jafnandi efni \u00ed dag standast vel hita \u00ed m\u00f6rgum kerfum. \u00deau virka \u00ed lofthertandi 2K PU og \u00ed h\u00e1hitaofnhertun akryl- og p\u00f3l\u00fdesterfilmukerfa. Sm\u00e1v\u00e6gilegar breytingar \u00e1 form\u00falunni geta skipt sk\u00f6pum fyrir yfirbor\u00f0sg\u00e6\u00f0i. \u00deetta hefur \u00e1hrif \u00e1 eiginleika eins og glj\u00e1a, rispu\u00feol og hversu vel lagskiptingar festast saman.<\/p>\n<h2>Ger\u00f0ir j\u00f6fnunarefna og verkunarh\u00e1ttir \u00feeirra<\/h2>\n<p>Efnasamsetning \u00e1kvar\u00f0ar einstaka eiginleika hvers jafnandi efnis. Framlei\u00f0endur \u00feurfa a\u00f0 velja r\u00e9tt ger\u00f0 efnis sem hentar notkunar\u00fe\u00f6rfum \u00feeirra til a\u00f0 n\u00e1 sem bestum yfirbor\u00f0s\u00e1rangri.<\/p>\n<h3>Sil\u00edkonbundin efni: PDMS og EO\/PO-breytingar<\/h3>\n<p>Sil\u00edkonj\u00f6fnunarefni lei\u00f0a marka\u00f0 i\u00f0na\u00f0arh\u00fa\u00f0efna. Heimsneysla nemur yfir 45.000 tonnum \u00e1 \u00e1ri. \u00deessi efni innihalda fj\u00f6lsiloxan me\u00f0 k\u00edsil-ox\u00edgeb\u00f6ndum (-Si-O-Si-) sem flytjast \u00e1 yfirbor\u00f0 h\u00fa\u00f0arinnar og mynda eina sameinda filmu. Grunnpol\u00fdd\u00edmet\u00fdls\u00edl\u00f3x\u00e1n (PDMS) dregur vel \u00far yfirbor\u00f0sspennu en stangast oft \u00e1 vi\u00f0 h\u00fa\u00f0unhar\u00f0narefni. Framlei\u00f0endur b\u00faa n\u00fa til fj\u00f6lh\u00e6fari valkosti me\u00f0 stefnumarkandi breytingum, einkum me\u00f0 p\u00f3l\u00fdeterefnum. Me\u00f0 \u00fev\u00ed a\u00f0 b\u00e6ta et\u00fdlenox\u00ed\u00f0i (EO) og pr\u00f3p\u00fdlenox\u00ed\u00f0i (PO) einingum vi\u00f0 s\u00edlikon geta framlei\u00f0endur stillt vatnsvinni (hydrophilicity) me\u00f0 \u00fev\u00ed a\u00f0 breyta hlutfalli EO\/PO. \u00deessar breytingar hj\u00e1lpa s\u00edlikon-efnum a\u00f0 jafna yfirbor\u00f0sspennu \u00e1 sama t\u00edma og \u00feau virka vel me\u00f0 mismunandi har\u00f0narefnakerfum.<\/p>\n<h3>Efni bygg\u00f0 \u00e1 p\u00f3l\u00fdakr\u00fdl\u00e1ti: fl\u00e6\u00f0isst\u00fdring \u00e1n h\u00e1lku<\/h3>\n<p>Akr\u00fdllj\u00f6fnunarefni nota p\u00f3l\u00fdakr\u00fdlat-h\u00f3m\u00f3p\u00f3l\u00fdm\u00e9r e\u00f0a samp\u00f3l\u00fdm\u00e9r me\u00f0 mismunandi sameindamassa. \u00d3l\u00edkt s\u00edlik\u00f3num draga p\u00f3l\u00fdakr\u00fdlat efni a\u00f0eins \u00far yfirbor\u00f0sspennu \u00ed upphafi. \u00deau einbl\u00edna \u00e1 a\u00f0 jafna \u00fat mismun \u00ed yfirbor\u00f0sspennu um h\u00fa\u00f0lagi\u00f0. Sameindamassi hefur mikil \u00e1hrif \u00e1 frammist\u00f6\u00f0u\u2014efni me\u00f0 yfir 100.000 sameindamassa gefa fram\u00farskarandi sl\u00e9ttleika en geta dregi\u00f0 \u00far glj\u00e1a. Akryljafnandi efni me\u00f0 hvarfh\u00e6fum h\u00f3pfundum bj\u00f3\u00f0a upp \u00e1 betri jafnun \u00e1n \u00feess a\u00f0 mynda \u00feoku e\u00f0a draga \u00far yfirbor\u00f0sh\u00f6rku. P\u00f3l\u00fdakr\u00fdlater henta vel me\u00f0 m\u00f6rgum har\u00f0nara kerfum, svo sem akr\u00fdl-melam\u00edni, 2K PU, alk\u00fd\u00f0 og p\u00f3l\u00fdester, sem gerir \u00feau a\u00f0 fr\u00e1b\u00e6rri valkostum \u00e1n k\u00edsils.<\/p>\n<h3>Fluor\u00f3k\u00f3ben-bundin efni: h\u00e1virkni vi\u00f0 a\u00f0 draga \u00far yfirbor\u00f0sspennu<\/h3>\n<p>Fluorocarbon-bundin efni draga \u00far yfirbor\u00f0sspennu betur en nokkur \u00f6nnur jafnunarefni. \u00deessi h\u00e1frammist\u00f6\u00f0uatb\u00e6tur geta l\u00e6kka\u00f0 yfirbor\u00f0sspennu ni\u00f0ur \u00ed 15\u201320 mN\/m, sem er miki\u00f0 m\u00e1l \u00fear sem \u00fea\u00f0 \u00fe\u00fd\u00f0ir a\u00f0 \u00feau virka betur en b\u00e6\u00f0i s\u00edlikon- og akr\u00fdlkostir. Vatnsbundnar bl\u00f6ndur \u00feurfa a\u00f0eins 0,011% fl\u00faorkolefnis-s\u00e1puefna samanbori\u00f0 vi\u00f0 0,11% kolefnis-s\u00e1puefna. \u00deessi efni hafa tvo helstu \u00f3kosti: \u00feau gera fro\u00f0u st\u00f6\u00f0ugri og geta haft \u00e1hrif \u00e1 festu milli laga. Flestir form\u00faluger\u00f0armenn geyma \u00feessi \u00farvals aukaefni fyrir krefjandi notkun \u00fear sem \u00f6nnur j\u00f6fnunarefni virka ekki vel.<\/p>\n<h3>Efni bygg\u00f0 \u00e1 kolefnisvetni: takm\u00f6rku\u00f0 notkunartilvik<\/h3>\n<p>H\u00fddrokarb\u00f3nsj\u00f3nhvatar eru hagkv\u00e6mar lausnir fyrir einfaldari notkun. Yfirbor\u00f0sspennul\u00e6kkandi hluti \u00feeirra inniheldur a\u00f0allega vetni- og kolefnisat\u00f3ma, og \u00feeir virka h\u00f3flega vi\u00f0 h\u00e6rri styrk. \u00deessir sj\u00f3nhvatar n\u00e1 yfirleitt l\u00e1gmarks yfirbor\u00f0sspennu \u00e1 bilinu 28\u201335 d\u00edn \u00e1 sent\u00edmetra, sem er langt fr\u00e1 \u00fev\u00ed sem fl\u00faorkarb\u00f3ns valkostir geta n\u00e1\u00f0. \u00deau eru f\u00e1anleg sem anj\u00f3n\u00edsk, ekki-j\u00f3n\u00edsk og katj\u00f3n\u00edsk efnasamb\u00f6nd, og margir form\u00faluger\u00f0armenn nota \u00feau sem fyrsta val sitt. Upphafleg styrkur upp \u00e1 0,11 TP3T gefur g\u00f3\u00f0a grunnvirkni \u00e1\u00f0ur en reynt er \u00e1 s\u00e9rh\u00e6f\u00f0ari valkosti.<\/p>\n<h2>A\u00f0 velja r\u00e9tt st\u00f6\u00f0ugleikauppb\u00f3t fyrir forriti\u00f0 \u00feitt<\/h2>\n<p>\u00de\u00fa \u00fearft a\u00f0 \u00edhuga \u00feitt tiltekna h\u00fa\u00f0unarkerfi til a\u00f0 velja r\u00e9tt sl\u00e9ttiefni. \u00c1rangur \u00feinn r\u00e6\u00f0st af \u00fev\u00ed hversu vel \u00fe\u00fa uppfyllir samr\u00fdmanleikakr\u00f6fur og jafnar frammist\u00f6\u00f0ubil.<\/p>\n<h3>Samr\u00fdmanleiki vatnsbundinna og leysibundinna kerfa<\/h3>\n<p>Vatnsbundin kerfi skapa einst\u00f6k vandam\u00e1l vegna \u00feess a\u00f0 vatn hefur h\u00e1an yfirbor\u00f0sspennu (72 mN\/m). \u00deessar form\u00falur \u00feurfa s\u00edlikonbundin efni e\u00f0a fl\u00faorkolefnisb\u00e6tiefni til a\u00f0 l\u00e6kka yfirbor\u00f0sspennu verulega. Polyacrylat-efni geta hj\u00e1lpa\u00f0 til vi\u00f0 a\u00f0 b\u00faa til sl\u00e9ttari yfirbor\u00f0 \u00e1n \u00feess a\u00f0 hafa \u00e1hrif \u00e1 gegns\u00e6i. Leysibundnar h\u00fa\u00f0un virka best me\u00f0 organ\u00f3breyttum s\u00edlik\u00f3num sem blandast vel vi\u00f0 har\u00f0vi\u00f0 og leysiefni af \u00f6llum ger\u00f0um.<\/p>\n<h3>A\u00f0 samr\u00e6ma sl\u00e9ttun og festingu millilaga<\/h3>\n<p>K\u00edsilbundin efni l\u00e6kka yfirbor\u00f0sspennu vel en geta veikja\u00f0 festu milli laga \u00ed fj\u00f6llags kerfum. akr\u00fdllei\u00f0r\u00e9ttingarefni hafa or\u00f0i\u00f0 fyrsta val fyrir grunnm\u00e1lningu og millil\u00f6g. Breytt akr\u00fdllei\u00f0r\u00e9ttingarefni leysa vandam\u00e1l har\u00f0ra undirlaga \u00e1n \u00feess a\u00f0 valda festuvandam\u00e1lum.<\/p>\n<h3>Tv\u00edverkandi efni me\u00f0 fro\u00f0u\u00feurrkunar- e\u00f0a sleipiefnaeiginleika<\/h3>\n<p>N\u00fat\u00edma jafnandi efni eru fr\u00e1b\u00e6r lei\u00f0 til a\u00f0 f\u00e1 aukna kosti. Sum s\u00edlikonefni flytjast a\u00f0 loft-v\u00f6kva vi\u00f0m\u00f3tinu og sprengja fro\u00f0u\u00adb\u00f3lur \u00e1 me\u00f0an \u00feau draga \u00far yfirbor\u00f0sspennu. \u00d6nnur auka rennsli og rispum\u00f3tst\u00f6\u00f0u \u00e1n \u00feess a\u00f0 gera h\u00fa\u00f0unina sk\u00fdja\u00f0a.<\/p>\n<h3>Pr\u00f3fun breytinga \u00e1 sameindamassa og skammti<\/h3>\n<p>M\u00f3lekul\u00feyngd hefur \u00e1hrif \u00e1 virkni efna \u2013 mismunandi \u00feyngdir laga tilteknar galla. Pr\u00f3fa\u00f0u mismunandi magn (1,0\u20135,01 TP3T fyrir akr\u00fdl\u00ed og 0,1\u20131,01 TP3T fyrir s\u00edlikon) og m\u00f3lekul\u00feyngdir til a\u00f0 finna besta samr\u00e6mi\u00f0.<\/p>\n<h2>\u00c1lyktun<\/h2>\n<p>J\u00f6fnunarefni geta umbreytt venjulegum h\u00fa\u00f0unarums\u00f3knum \u00ed fram\u00farskarandi lokaafur\u00f0ir. \u00cd \u00feessari grein h\u00f6fum vi\u00f0 kanna\u00f0 \u00feessi s\u00e9rh\u00e6f\u00f0u aukaefni sem virka \u00e1 sameindastigi til a\u00f0 koma \u00ed veg fyrir yfirbor\u00f0sgalla me\u00f0 \u00fev\u00ed a\u00f0 breyta yfirbor\u00f0sspennueiginleikum. Yfirbor\u00f0sfullkomnun h\u00fa\u00f0unarkerfisins \u00fe\u00edns r\u00e6\u00f0st af \u00fev\u00ed a\u00f0 velja r\u00e9tt efni.<\/p>\n<p>Efnafr\u00e6\u00f0ileg samsetning hverrar efnasambands b\u00fd\u00f0ur upp \u00e1 s\u00edn s\u00e9rst\u00f6ku \u00e1vinning. Sil\u00edkonbundin efni skara fram \u00far vi\u00f0 a\u00f0 draga \u00far yfirbor\u00f0sspennu en geta haft \u00e1hrif \u00e1 festu milli laga. Polyakr\u00fdlater n\u00e1 g\u00f3\u00f0u jafnv\u00e6gi vi\u00f0 mismun \u00ed yfirbor\u00f0sspennu \u00e1n \u00feess a\u00f0 draga \u00far heildar spennu of miki\u00f0. \u00deau henta vel \u00ed forrit sem krefjast g\u00f3\u00f0rar fl\u00e6\u00f0isstj\u00f3rnunar \u00e1n \u00feess a\u00f0 valda rennslishn\u00f6krum. Fl\u00faorkolefnis efni bj\u00f3\u00f0a upp \u00e1 mestu spennul\u00e6kkun vi\u00f0 l\u00e1gmarks styrk, \u00fe\u00f3 \u00feau geti st\u00f6\u00f0ga\u00f0 fro\u00f0u of miki\u00f0. Kolefnisvetni-valkostir eru hagkv\u00e6mir \u00feegar kr\u00f6fur eru ekki eins krefjandi.<\/p>\n<p>\u00c1rangur r\u00e6\u00f0st a\u00f0 lokum af r\u00e9ttum pr\u00f3funum og \u00fev\u00ed a\u00f0 \u00feekkja h\u00fa\u00f0unarkerfi\u00f0 sitt til hl\u00edtar. Vatnsbundnar form\u00falur krefjast meiri minnkunar yfirbor\u00f0sspennu en kerfi sem byggja \u00e1 leysiefnum. H\u00e6rri sameindamassa gerir yfirbor\u00f0 sl\u00e9ttari en getur dregi\u00f0 \u00far glj\u00e1a.<\/p>\n<p>A\u00f0 finna hinn fullkomna jafnv\u00e6gi milli yfirbor\u00f0sspennu, seigju og \u00e1fer\u00f0ar a\u00f0fer\u00f0ar sameinar v\u00edsindi og list. \u00de\u00fa munt geta leyst algenga galla betur \u00feegar \u00fe\u00fa skilur hvernig \u00feessir \u00fe\u00e6ttir vinna saman. \u00deessi \u00feekking hj\u00e1lpar \u00fe\u00e9r a\u00f0 velja r\u00e9ttu jafnunarefnin sem leysa s\u00e9rt\u00e6ka galla \u00e1 me\u00f0an \u00feau var\u00f0veita mikilv\u00e6ga eiginleika eins og vi\u00f0lo\u00f0un, h\u00f6rku og sj\u00f3nr\u00e6na sk\u00fdrleika.<\/p>\n<p>V\u00edsindin um yfirbor\u00f0sfullkomnun \u00fer\u00f3ast st\u00f6\u00f0ugt, en \u00feessir kjarnahugmyndir eru undirsta\u00f0a gallalausra \u00e1fer\u00f0a \u00ed fj\u00f6lbreyttum i\u00f0na\u00f0arums\u00f3knum. S\u00fa fullkomna, spegilglj\u00e1andi \u00e1fer\u00f0 sem vi\u00f0skiptavinir \u00fe\u00ednir elska kemur fr\u00e1 \u00fev\u00ed a\u00f0 huga a\u00f0 \u00feessum sm\u00e1atri\u00f0um \u00ed form\u00faluger\u00f0inni, sem eru l\u00edtil en afar mikilv\u00e6g.<\/p>\n<h2>Algengar spurningar<\/h2>\n<p><strong>Q1. Hvert er helsta markmi\u00f0 j\u00f6fnunarefna \u00ed h\u00fa\u00f0un?<\/strong> J\u00f6fnunarefni eru aukaefni sem hj\u00e1lpa til vi\u00f0 a\u00f0 mynda sl\u00e9tta og einsleitna h\u00fa\u00f0myndunarkenju vi\u00f0 \u00feurrkun og myndun h\u00fa\u00f0ar. \u00deau virka me\u00f0 \u00fev\u00ed a\u00f0 draga \u00far yfirbor\u00f0sspennu, sem hj\u00e1lpar til vi\u00f0 a\u00f0 \u00fatr\u00fdma yfirbor\u00f0sg\u00f6llum og b\u00e6tir heildarg\u00e6\u00f0i yfirbor\u00f0sins.<\/p>\n<p><strong>Q2. Hvernig eru jafnandi efni fr\u00e1brug\u00f0in blautunarefnum?<\/strong> \u00de\u00f3 a\u00f0 b\u00e6\u00f0i s\u00e9u yfirbor\u00f0svirka aukaefni, nota jafnandi efni yfirleitt akr\u00fdl-k\u00f3pol\u00fdmera e\u00f0a breytt siloxan til a\u00f0 b\u00e6ta sl\u00e9ttleika filmu. Vettiefni eru aftur \u00e1 m\u00f3ti yfirleitt bygg\u00f0 \u00e1 yfirbor\u00f0svirkum efnum og einbl\u00edna \u00e1 a\u00f0 b\u00e6ta getu h\u00fa\u00f0unarinnar til a\u00f0 dreifast yfir yfirbor\u00f0.<\/p>\n<p><strong>Q3. Hva\u00f0a tegundir yfirbor\u00f0sgalla geta j\u00f6fnunarefni hj\u00e1lpa\u00f0 til vi\u00f0 a\u00f0 koma \u00ed veg fyrir?<\/strong> J\u00f6fnunarefni geta hj\u00e1lpa\u00f0 til vi\u00f0 a\u00f0 koma \u00ed veg fyrir \u00fdmsa yfirbor\u00f0sgalla, \u00fear \u00e1 me\u00f0al appels\u00ednuh\u00fa\u00f0 (hno\u00f0ru\u00f0 \u00e1fer\u00f0), g\u00edga, n\u00e1larg\u00f6t og \u00f3jafna \u00feykkt h\u00fa\u00f0unar. \u00deessi b\u00e6tiefni stu\u00f0la a\u00f0 j\u00f6fnari dreifingu h\u00fa\u00f0unarinnar, sem skilar sl\u00e9ttari og fagurfr\u00e6\u00f0ilega a\u00f0la\u00f0andi \u00e1fer\u00f0.<\/p>\n<p><strong>Q4. Eru til mismunandi ger\u00f0ir af j\u00f6fnunarefnum fyrir \u00fdmis h\u00fa\u00f0unarkerfi?<\/strong> J\u00e1, \u00fea\u00f0 eru nokkrar tegundir af jafnandi efnum h\u00f6nnu\u00f0 fyrir mismunandi h\u00fa\u00f0unarkerfi. Sil\u00edkonbundin jafnandi efni, p\u00f3l\u00fdakr\u00fdlatbundin jafnandi efni, fl\u00faorkolefnisbundin jafnandi efni og kolefnisbundin jafnandi efni eru algengar ger\u00f0ir. Hver tegund hefur s\u00e9rt\u00e6ka eiginleika sem henta mismunandi notkun og h\u00fa\u00f0unarfyrirkomulagi.<\/p>\n<p><strong>Q5. Hvernig velur \u00fe\u00fa r\u00e9tt jafnandi efni fyrir tiltekna notkun?<\/strong> Val \u00e1 vi\u00f0eigandi sl\u00e9ttiefni fer eftir \u00fe\u00e1ttum eins og h\u00fa\u00f0unarkerfinu (vatnsbundnu e\u00f0a leysibundnu), \u00e6skilegum yfirbor\u00f0seiginleikum, samr\u00fdmanleika vi\u00f0 a\u00f0ra \u00fe\u00e6tti og frammist\u00f6\u00f0ukr\u00f6fum. Mikilv\u00e6gt er a\u00f0 huga a\u00f0 jafnv\u00e6gi milli sl\u00e9ttunarframmist\u00f6\u00f0u og annarra eiginleika, svo sem festu milli laga, og framkv\u00e6ma \u00edtarlegar pr\u00f3fanir me\u00f0 mismunandi sameindamassa og sk\u00f6mmtum til a\u00f0 \u00e1kvar\u00f0a bestu vali\u00f0.<\/p>\n<\/div>\n<p><!--more--><\/p>\n<p><!--more--><\/p>\n<p><!--more--><\/p>\n<p><!--more--><\/p>\n<p><!--more--><\/p>","protected":false},"excerpt":{"rendered":"<p>Hvernig j\u00f6fnunarefni virka \u00ed raun: V\u00edsindin \u00e1 bak vi\u00f0 yfirbor\u00f0sfullkomnun   Yfirbor\u00f0sspenna getur gert e\u00f0a ey\u00f0ilagt fullkomna \u00e1fer\u00f0. J\u00f6fnunarefni vinna bak vi\u00f0 tj\u00f6ldin til a\u00f0 draga \u00far yfirbor\u00f0sspennu vatns \u00far n\u00e1tt\u00farulegum 72 mN\/m ni\u00f0ur \u00ed 15\u201320 mN\/m, allt eftir efnasamsetningu \u00feeirra. Vi\u00f0 sj\u00e1um \u00e1rangur g\u00f3\u00f0rar j\u00f6fnunar en \u2026 <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/levellingagent.net\/is\/hvernig-jofnunarefni-virkar-i-raun-visindin-a-bak-vid-fullkomna-yfirbordsaferd\/\" class=\"more-link\">Read more<span class=\"screen-reader-text\"> &#8220;How Levelling Agent Actually Work: The Science Behind Surface Perfection&#8221;<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-8","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/posts\/8","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/comments?post=8"}],"version-history":[{"count":4,"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/posts\/8\/revisions"}],"predecessor-version":[{"id":51,"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/posts\/8\/revisions\/51"}],"wp:attachment":[{"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/media?parent=8"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/categories?post=8"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/levellingagent.net\/is\/wp-json\/wp\/v2\/tags?post=8"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}