{"id":1984,"date":"2026-03-02T09:28:36","date_gmt":"2026-03-02T08:28:36","guid":{"rendered":"https:\/\/glassfiber.wpenginepowered.com\/?post_type=fagartikler&p=1984"},"modified":"2026-06-09T13:51:46","modified_gmt":"2026-06-09T11:51:46","slug":"hvad-er-trefjaplast","status":"publish","type":"fagartikler","link":"https:\/\/glassfiber.no\/is\/fagartikler\/hva-er-glassfiber\/","title":{"rendered":"Trefjaplast \u2013 V\u00f6rur framt\u00ed\u00f0arinnar"},"content":{"rendered":"

Trefjaplast er sveigjanlegt og sterkt efni af h\u00e1um g\u00e6\u00f0aflokki. \u00deegar vi\u00f0 t\u00f6lum um trefjaplast er \u00ed raun \u00e1tt vi\u00f0 samsett efni \u00fear sem gler\u00fer\u00e6\u00f0ir og plast eru blanda\u00f0 saman. Samsett efni eru framleidd me\u00f0 \u00fev\u00ed a\u00f0 sameina nokkur efni \u00ed samsett efni. Val \u00e1 efnum byggist \u00e1 \u00feeim eiginleikum sem vi\u00f0 viljum a\u00f0 efni\u00f0 hafi. Efnin munu vinna saman og gefa loka samsetta efninu bestu m\u00f6gulegu virkni. Bl\u00f6ndunin gefur okkur t\u00e6kif\u00e6ri til a\u00f0 s\u00e9rsn\u00ed\u00f0a efni\u00f0 me\u00f0 \u00feeim \u00e1vinningi sem vi\u00f0 viljum.<\/p>\n\n\n\n

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  • L\u00e9tt og sterkt<\/li>\n<\/ul>\n\n\n\n
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    Trefjaplasti\u00f0 er mj\u00f6g sterkt mi\u00f0a\u00f0 vi\u00f0 l\u00e1ga \u00feyngd s\u00edna.
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    • Engin t\u00e6ring<\/li>\n<\/ul>\n\n\n\n
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      Efni\u00f0 \u00feolir krefjandi og t\u00e6randi umhverfi \u00e1n \u00feess a\u00f0 ry\u00f0ga, rotna e\u00f0a t\u00e6rast.
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      • Vi\u00f0haldsv\u00e6nt<\/li>\n<\/ul>\n\n\n\n
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        Krefst l\u00e1gmarks vi\u00f0halds.<\/p>\n<\/div>\n\n\n\n

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        • Langur geymslu\u00feol<\/li>\n<\/ul>\n\n\n\n
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          Mikill styrkur og engin t\u00e6ring tryggja langan l\u00edft\u00edma.<\/p>\n\n\n\n

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          • \u00d6ryggi<\/li>\n<\/ul>\n\n\n\n
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            H\u00e6gt er a\u00f0 framlei\u00f0a trefjaplast me\u00f0 fj\u00f6lda \u00f6ryggiseflandi eiginleika.<\/p>\n\n\n\n

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            • Sveigjanlegt<\/li>\n<\/ul>\n\n\n\n
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              Efni\u00f0 er mj\u00f6g fj\u00f6lh\u00e6ft og h\u00e6gt er a\u00f0 a\u00f0laga \u00fea\u00f0 a\u00f0 flestum notkunarsvi\u00f0um.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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              Engin t\u00e6ring<\/strong><\/p>\n\n\n\n

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              H\u00e6gt er a\u00f0 nota trefjaplasti\u00f0 \u00ed krefjandi umhverfi \u00e1n \u00feess a\u00f0 \u00fea\u00f0 t\u00e6rist. Efni\u00f0 \u00feolir raka, erfi\u00f0ar ve\u00f0ura\u00f0st\u00e6\u00f0ur og efni \u00ed langan t\u00edma og mun samt sem \u00e1\u00f0ur virka sem best.<\/p>\n<\/div><\/div>\n\n\n\n

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              Vi\u00f0haldsv\u00e6nt<\/strong><\/p>\n\n\n\n

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              \u00dea\u00f0 krefst l\u00e1gmarks vi\u00f0halds, jafnvel \u00ed t\u00e6randi umhverfi. Minna vi\u00f0hald \u00fe\u00fd\u00f0ir minni vinnu, minni notkun rotvarnarefna og efna og l\u00e6gri kostna\u00f0. <\/p>\n<\/div>

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              Langt l\u00edf<\/strong><\/p>\n\n\n\n

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              Mikill styrkur, st\u00f6\u00f0ugleiki og t\u00e6ringar\u00feol gerir trefjaplast a\u00f0 endingarg\u00f3\u00f0ri og endingarg\u00f3\u00f0ri lausn. \u00cd a\u00f0st\u00e6\u00f0um \u00fear sem \u00f6nnur hef\u00f0bundin efni myndu slitna getur trefjaplast veri\u00f0 raunh\u00e6fari valkostur.<\/p>\n<\/div><\/div>\n\n\n\n

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              RES\u00cdN<\/h3>\n\n\n\n

              Plastefni er annar af tveimur nau\u00f0synlegum hlutum samsettra efna sem vi\u00f0 bj\u00f3\u00f0um upp \u00e1, \u00fea\u00f0 er efni\u00f0 sem er styrkt me\u00f0 gler\u00fer\u00e1\u00f0um til a\u00f0 gefa efninu \u00fe\u00e1 eiginleika sem \u00f3ska\u00f0 er eftir. Margar mismunandi ger\u00f0ir af plastefnum eru nota\u00f0ar vi\u00f0 framlei\u00f0slu \u00e1 samsettum efnum. Flestar v\u00f6rur okkar eru ger\u00f0ar \u00far p\u00f3l\u00fdester, v\u00edn\u00fdlester e\u00f0a fen\u00f3li.<\/p>\n\n\n\n

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              P\u00f3l\u00fdester<\/h4>\n\n\n\n
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              P\u00f3l\u00fdester er algengasta tegund plastefnis. \u00dea\u00f0 er fj\u00f6lh\u00e6ft og hagkv\u00e6mt efni me\u00f0 fj\u00f6lda kosta og virkar vel \u00ed samsetningu vi\u00f0 gler\u00fer\u00e6\u00f0i. Sveigjanleiki og eiginleikar p\u00f3l\u00fdesters gera \u00fea\u00f0 hentugt fyrir flesta notkunarm\u00f6guleika. Gler\u00fer\u00e6\u00f0istyrkt samsett efni me\u00f0 p\u00f3l\u00fdester er oft skammstafa\u00f0 sem GRP.<\/p>\n\n\n\n

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              V\u00edn\u00fdl ester<\/h4>\n\n\n\n
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              V\u00edn\u00fdlester hefur margt l\u00edkt me\u00f0 p\u00f3l\u00fdester, en \u00fea\u00f0 er einnig munur \u00e1 \u00fev\u00ed hvernig \u00fea\u00f0 er framleitt og hvernig \u00fea\u00f0 virkar. V\u00edn\u00fdlester er m\u00e6lt me\u00f0 fyrir notkun \u00fear sem miklar kr\u00f6fur eru ger\u00f0ar um t\u00e6ringar\u00feol og \u00e1lag. Samsett efni me\u00f0 v\u00edn\u00fdlester nota skammst\u00f6funina GRVE.<\/p>\n\n\n\n

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              Fen\u00f3l<\/h4>\n\n\n\n
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              Fen\u00f3l er tilvali\u00f0 \u00feegar miklar \u00f6ryggiskr\u00f6fur eru ger\u00f0ar vegna eldsvo\u00f0a, sprenginga, reykmyndunar og eitur\u00e1hrifa. Efni\u00f0 hefur fram\u00farskarandi eldvarnareiginleika, er hita- og efna\u00feoli\u00f0 og er rafmagns- og hitaeinangrandi.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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              \u00d6RYGGI<\/strong><\/strong><\/p>\n\n\n\n

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              Trefjaplast hefur einnig marga \u00f6ryggiskosti. Efni\u00f0 er rafeinangrandi og er oft nota\u00f0 \u00fear sem h\u00e6tta er \u00e1 h\u00f6ggskemmdum. \u00dea\u00f0 \u00feolir h\u00e1tt hitastig, er varmaeinangrandi og h\u00e6gt er a\u00f0 framlei\u00f0a \u00fea\u00f0 me\u00f0 eldvarnareiginleikum, og \u00feess vegna er trefjaplast nota\u00f0 \u00e1 m\u00f6rku\u00f0um eins og ol\u00edu, gasi og i\u00f0na\u00f0i.<\/p>\n<\/div><\/div>\n\n\n\n

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              H\u00c1LKV\u00d6RN<\/strong><\/strong><\/p>\n\n\n\n

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              H\u00e6gt er a\u00f0 s\u00e9rsn\u00ed\u00f0a trefjaplastv\u00f6rur me\u00f0 h\u00e1lkuv\u00f6rn. Yfirbor\u00f0i\u00f0 er h\u00e6gt a\u00f0 framlei\u00f0a me\u00f0 sandi sem dregur \u00far h\u00e6ttu me\u00f0 \u00fev\u00ed a\u00f0 veita gott grip fyrir b\u00e6\u00f0i f\u00e6tur og hj\u00f3l. H\u00e6gt er a\u00f0 a\u00f0laga hversu gr\u00f3ft yfirbor\u00f0i\u00f0 er eftir \u00fe\u00f6rfum. Trefjaplast me\u00f0 h\u00e1lkuv\u00f6rn er miki\u00f0 nota\u00f0 og er einf\u00f6ld, st\u00f6\u00f0ug og endingarg\u00f3\u00f0 lausn gegn h\u00e1lkuh\u00e6ttu.<\/p>\n<\/div>

              \"\"<\/figure><\/div>\n<\/div><\/div>\n\n\n\n

              ELDEIGNIR<\/strong><\/h2>\n\n\n\n
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              Eldvarnarefni<\/h4>\n\n\n\n
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              Tegundir plastefnis eins og p\u00f3l\u00fdester og v\u00ednylester eru eldfimar. Til a\u00f0 gera v\u00f6rur okkar \u00f6ruggari er \u00e1l\u00fer\u00edh\u00fddrati b\u00e6tt vi\u00f0 vi\u00f0 framlei\u00f0sluna, sem hefur eldvarnar\u00e1hrif. A\u00f0 auki eru gler\u00fer\u00e6\u00f0irnir sj\u00e1lfir ekki eldfimar, sem hj\u00e1lpar til vi\u00f0 a\u00f0 draga \u00far hugsanlegri \u00e1h\u00e6ttu. Undantekningin er plastefnisger\u00f0in fen\u00f3l, sem er algj\u00f6rlega \u00f3eldfim og \u00fearfnast ekki eldvarnarefna.<\/p>\n\n\n\n

              <\/div>\n<\/div>\n<\/div>\n\n\n\n
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              Sj\u00e1lfsl\u00f6kkvandi<\/h4>\n\n\n\n
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              Ef eldur kemur upp getur plastefni\u00f0 \u00ed efninu kvikna\u00f0 \u00ed umhverfinu, en trefjaplasti\u00f0 slokknar sj\u00e1lft. \u00dea\u00f0 eina sem \u00fearf er a\u00f0 sl\u00f6kkva uppt\u00f6k eldsins. \u00deegar b\u00fai\u00f0 er a\u00f0 r\u00e1\u00f0ast \u00e1 uppt\u00f6kin slokknar trefjaplasti\u00f0 sj\u00e1lft eftir stuttan t\u00edma.<\/p>\n\n\n\n

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              <\/p>\n<\/div>\n\n\n\n

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              L\u00edtil elds\u00fatbrei\u00f0sla<\/h4>\n\n\n\n
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              Trefjaplasti\u00f0 er pr\u00f3fa\u00f0 samkv\u00e6mt ASTM E84-2018. Efni\u00f0 hefur veri\u00f0 pr\u00f3fa\u00f0 me\u00f0 tilliti til tveggja \u00fe\u00e1tta: loga\u00fatbrei\u00f0slu og reykmyndunar. Trefjaplasti\u00f0 hefur l\u00e1ga loga\u00fatbrei\u00f0slueinkunn upp \u00e1 15 og reykmyndunargildi upp \u00e1 400-450.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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              SVEIGJANLEGUR<\/strong><\/h1>\n\n\n\n

              Sveigjanleiki er enn einn kosturinn sem vi\u00f0 getum b\u00e6tt vi\u00f0 listann yfir g\u00f3\u00f0ar \u00e1st\u00e6\u00f0ur til a\u00f0 velja trefjaplast. Trefjaplast er enn tengt g\u00f6mlum b\u00e1tum, en efni\u00f0 er og getur veri\u00f0 svo miklu meira. Efni\u00f0 sj\u00e1lft er fj\u00f6lh\u00e6ft, teygjanlegt en samt endingargott. Trefjaplast er h\u00e6gt a\u00f0 a\u00f0laga a\u00f0 flestum tilgangi og m\u00f3ta \u00ed \u00f3tal mismunandi ger\u00f0ir af sni\u00f0um sem passa vi\u00f0 allar forskriftir. \u00dea\u00f0 er samsetning allra eiginleika sem gerir trefjaplast a\u00f0 eftirs\u00f3ttri lausn. Eiginleikar efnisins \u00fe\u00fd\u00f0a a\u00f0 h\u00e6gt er a\u00f0 nota trefjaplast sem valkost \u00e1 \u00fdmsum svi\u00f0um \u00fear sem \u00f6nnur hef\u00f0bundin efni duga ekki.<\/p>\n\n\n\n

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              Vi\u00f0 vitum n\u00fa hversu g\u00f3\u00f0ar v\u00f6rur \u00far trefjaplasti eru, en hvernig eru \u00fe\u00e6r \u00ed raun framleiddar?<\/strong><\/h2>\n\n\n\n
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              Samsett efni<\/h3>\n\n\n\n

              Trefjaplast er samsett efni, sem \u00fe\u00fd\u00f0ir a\u00f0 \u00fea\u00f0 er gert \u00far nokkrum \u00fe\u00e1ttum.
              Fyrir trefjaplast er \u00feetta:<\/p>\n\n\n\n

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              Gler\u00fer\u00e6\u00f0irnir (styrking)<\/strong><\/p>\n<\/div><\/div>\n\n\n\n

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              Bindiefni (plastefni)<\/strong><\/p>\n<\/div><\/div>\n\n\n\n

              Trefjaplasti\u00f0 sj\u00e1lft<\/h3>\n\n\n\n

              Vi\u00f0 t\u00f6kum fyrst trefjaplasti\u00f0.<\/p>\n\n\n\n

              \u00deetta er framleitt me\u00f0 \u00fev\u00ed a\u00f0 br\u00e6\u00f0a gler sem s\u00ed\u00f0an er \u00fer\u00fdst \u00ed gegnum litla st\u00fata.
              \u00dar \u00feessu f\u00e1st \u00f6rsm\u00e1lega \u00feunnir \u00fer\u00e6\u00f0ir e\u00f0a trefjar.
              \u00deetta k\u00f6llum vi\u00f0 gler\u00fer\u00e6\u00f0i. \u00deegar \u00e1 \u00feessu stigi ferlisins eru trefjarnar endingarg\u00f3\u00f0ar en skortir fasta eiginleika.<\/p>\n\n\n\n

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              Bindingin<\/h3>\n\n\n\n
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              \u00deetta er \u00fear sem bindiefni\u00f0 kemur vi\u00f0 s\u00f6gu.<\/p>\n\n\n\n

              Bindiefni\u00f0 bindur trefjarnar saman og gefur \u00feeim verndandi lag.<\/p>\n\n\n\n

              N\u00fa hefst framlei\u00f0sla \u00e1 \u00feeirri v\u00f6ru sem \u00e1 a\u00f0 framlei\u00f0a \u00far trefjaplasti.<\/p>\n\n\n\n

              \u00ddmsar framlei\u00f0slua\u00f0fer\u00f0ir eru nota\u00f0ar til a\u00f0 m\u00f3ta trefjaplasti\u00f0 \u00ed \u00fe\u00e1 v\u00f6ru sem \u00f3ska\u00f0 er eftir.<\/p>\n<\/div>\n\n\n\n

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