{"id":2046,"date":"2022-10-22T05:26:09","date_gmt":"2022-10-22T05:26:09","guid":{"rendered":"http:\/\/hpmc.ae\/?p=2046"},"modified":"2022-10-22T05:36:26","modified_gmt":"2022-10-22T05:36:26","slug":"hpmc-for-gypsum-putty","status":"publish","type":"post","link":"https:\/\/hpmc.ae\/sl\/hpmc-for-gypsum-putty\/","title":{"rendered":"HPMC for Gypsum putty"},"content":{"rendered":"
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HPMC (hidroksipropil metil celuloza) igra pomembno vlogo pri formulaciji gipsanega kit-a. Pomaga oblikovati gladek, prilagodljiv kit, s katerim je enostavno delati. V tem \u010dlanku boste izvedeli, zakaj morate dodati HPMC v svoj kit. \u0161tevilne koristi tega dodatka najdete spodaj.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Kaj je HPMC?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Preden za\u010dnemo, si oglejmo na kratko, kaj je HPMC.
Hypromellose (INN), kratica za HPMC (hidroksipropil metilceluloza)<\/strong>((https:\/\/en.wikipedia.org\/wiki\/Hypromellose<\/a>)), je vrsta neionskega celuloznega me\u0161anega etra. Kon\u010dni izdelek je bel prah, njegova velikost delcev pa presega sito 80-mesh. Narejen je iz rafiniranega bomba\u017ea ali lesne celuloze skozi serijo reakcij eterifikacije.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Slika prahu MikaZone HPMC<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Lastnosti HPMC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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  1. \u00a0HPMC ima lastnosti termi\u010dne gelacije. Precipira in gelira v vodni raztopini ter se ponovno raztopi po hlajenju, zato se pogosto uporablja kot zgostilec v gipsanem kitu.<\/li>
  2. \u00a0Njegova vodna raztopina ne vsebuje ionskega naboja, zato se dodaja v gipsani kit brez kemi\u010dne reakcije, prav tako deluje kot sredstvo za zadr\u017eevanje vode, kar pomaga pri reakciji komponent v gipsanem kitu v bolj\u0161ih pogojih.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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    Zakaj je potrebno dodati HPMC v gipsani kit<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Dodatek HPMC omogo\u010da, da kit pove\u010da svojo trdnost, tj. pove\u010da se lepljivost. Zaradi prilagodljivosti polimera je zmogljivost deformacije precej vi\u0161ja od trdnih struktur, oblikovanih iz vode-\u010dvrstih materialov, na primer, kar izbolj\u0161uje zmogljivost deformacije kita, in se bistveno pove\u010duje vloga razpr\u0161itve napetosti, s \u010dimer se izbolj\u0161uje odpornost kita proti razpokam.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Med gradnjo ima osnovna stena dolo\u010deno stopnjo absorpcije vode, \u0161e posebej v visokotemperaturnih okoljih in pri izhlapevanju iz okolice, kit bo izgubil vodo prehitro, kar bo povzro\u010dilo lu\u0161\u010denje in druge pojave, s \u010dimer se bo trdnost kita zmanj\u0161ala. Zaradi tega bo dodajanje HPMC re\u0161ilo ta problem (dobro zadr\u017eevanje vode).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"hpmc\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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    Po drugi strani ima HPMC visoko viskoznost, kar pove\u010duje plavajo\u010do silo kita in prepre\u010duje sledenje med gradnjo, prav tako pa olaj\u0161a strganje.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    Zaklju\u010dek<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    HPMC v gipsanem kitu<\/a> je predvsem uporabljen kot zgostilec, sredstvo za zadr\u017eevanje vode in mazivo.<\/strong>
    Zgostilec: HPMC zgosti gipsani kit, izbolj\u0161a njegovo suspenzijo in odpornost proti sledenju ter ohranja enakomernost raztopine.
    Sredstvo za zadr\u017eevanje vode: HPMC ohranja gipsani kit vla\u017een in omogo\u010da, da se pomo\u017eni pepel reagira pod vodo.
    Mazivo: HPMC ohranja gladkost in enakomernost gipsanega kita med gradnjo.
    Kako narediti     HPMC<\/a><\/strong> bolje je izbolj\u0161ati konstrukcijo ometa za stene, lahko Kontakt<\/strong><\/span><\/a> strokovnjaki za izdelke MikaZone vam bodo pomagali najti formulo prilagojeno za vas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

    HPMC (Hydroxypropyl Methyl Cellulose) plays an important role in the formulation of gypsum putty. It helps to form a smooth, flexible putty that is easy to work with. In this article, you will learn why you need to add hpmc to your putty. many of the benefits this additive provides you can find below. What [\u2026]<\/p>","protected":false},"author":1,"featured_media":2048,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2046","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/posts\/2046","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/comments?post=2046"}],"version-history":[{"count":8,"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/posts\/2046\/revisions"}],"predecessor-version":[{"id":2058,"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/posts\/2046\/revisions\/2058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/media\/2048"}],"wp:attachment":[{"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/media?parent=2046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/categories?post=2046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hpmc.ae\/sl\/wp-json\/wp\/v2\/tags?post=2046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}