{"id":712,"date":"2026-08-26T12:55:34","date_gmt":"2026-08-26T10:55:34","guid":{"rendered":"https:\/\/tera.si\/?page_id=712"},"modified":"2026-09-08T11:25:52","modified_gmt":"2026-09-08T09:25:52","slug":"pbt-polibutilen-tereftalat","status":"publish","type":"page","link":"https:\/\/tera.si\/en\/prodajni-program\/pbt-polibutilen-tereftalat\/","title":{"rendered":"PBT \u2013 Polybutylene terephthalate"},"content":{"rendered":"

PBT<\/strong>: Pocan, Ultradur, Teradur, Later<\/p>\n

\n
\n
KEY BENEFITS:<\/strong><\/div>\n
    \n
  • high strength and hardness<\/li>\n
  • high dimensional stability<\/li>\n
  • good dimensional stability<\/li>\n
  • toughness<\/li>\n
  • good sliding properties<\/li>\n
  • wear resistance<\/li>\n
  • \u00a0good electrical insulation properties<\/li>\n
  • resistance to cutting, chemicals and weathering<\/li>\n
  • resistance to bending<\/li>\n
  • high surface gloss<\/li>\n
  • minimal color change at high application temperature<\/li>\n
  • self-extinguishing<\/li>\n<\/ul>\n<\/div>\n
    \n
    LIMITATIONS:<\/strong><\/div>\n
      \n
    • resistance to hydrolysis<\/li>\n
    • quality drying before processing<\/li>\n<\/ul>\n<\/div>\n<\/div>\n

       <\/p>\n

      Typical applications<\/p>\n

      Electrical Engineering, Electronics (E&E) and Telecommunications<\/strong><\/p>\n

      PBT is one of the most commonly used materials in this sector, as it maintains excellent insulating properties even at high frequencies and in dry, hot environments.<\/p>\n

        \n
      • Connectors and sockets:<\/strong> High-voltage automotive connectors, computer connectors (e.g. USB housings), chip and relay sockets.<\/li>\n
      • Switchgear:<\/strong> Switch housings, circuit breakers, relays and junction boxes.<\/li>\n
      • Lighting technique:<\/strong> Lamp sockets, LED spotlight housings, sockets for energy-saving and halogen lamps, and energy-saving modules.<\/li>\n
      • Windings:<\/strong> Coils for transformers, electric motors and solenoid valves.<\/li>\n<\/ul>\n

        Automotive industry (Electrical and exterior)<\/strong><\/p>\n

        PBT is excellent at withstanding high temperatures under the hood and chemicals such as motor oils and gasoline.<\/p>\n

          \n
        • Ignition systems:<\/strong> Ignition distributor covers, ignition coils and sensor housings.<\/li>\n
        • Headlights:<\/strong> Inner headlight frames and reflectors (where high temperatures and dimensional accuracy are critical).<\/li>\n
        • External components:<\/strong> Door handles, side mirror and wiper housings, radiator grilles.<\/li>\n<\/ul>\n

          Consumer goods and household appliances<\/strong><\/p>\n

          Due to its good surface appearance, stain resistance and heat resistance, PBT is widely used in daily life.<\/p>\n

            \n
          • Small household appliances:<\/strong> Parts of coffee makers, toaster housings, irons, hair dryers and hair straighteners.<\/li>\n
          • Computer peripherals:<\/strong> High quality mechanical keyboard keys (PBT keycaps)<\/strong> \u2013 unlike cheaper ABS plastic, PBT does not wear down to a high gloss (does not become \u201cgreasy\u201d) and does not yellow.<\/li>\n
          • Bristles:<\/strong> Bristles for high-end toothbrushes, cosmetic brushes, and industrial brushes (as they have excellent elastic rebound).<\/li>\n<\/ul>\n

             <\/p>\n

            Quick comparison: PBT vs. PA and POM<\/strong><\/p>\n\n\n\n\n\n\n\n
            Property<\/strong><\/td>\nPBT (Polyester)<\/strong><\/td>\nPA (Polyamide \/ Nylon)<\/strong><\/td>\nPOM (Acetal)<\/strong><\/td>\n<\/tr>\n
            Moisture absorption<\/strong><\/td>\nVery low (stable dimensions)<\/td>\nHigh (affects dimensions and strength)<\/td>\nAlmost nothing (excellent dimensions)<\/td>\n<\/tr>\n
            Electrical properties<\/strong><\/td>\nSuperior (creeping current resistance)<\/td>\nAverage (moisture deteriorates insulation)<\/td>\nGood, but less suitable for high voltages<\/td>\n<\/tr>\n
            Mechanical strength<\/strong><\/td>\nExceptional (especially with GF fibers)<\/td>\nExcellent impact toughness<\/td>\nExceptional resistance to fatigue and wear<\/td>\n<\/tr>\n
            Main weakness<\/strong><\/td>\nPoor resistance to hydrolysis (hot water)<\/td>\nHygroscopicity (water absorption)<\/td>\nDifficult bonding and high shrinkage when injection molding<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

             <\/p>\n

            The most common modification: PBT + GF<\/strong><\/p>\n

            In practice, more than 70 % PBT materials are used in the form of PBT + GF30<\/strong> (reinforced with 30 % glass fibers). This addition dramatically increases the load deflection temperature (HDT) from around 60 \u00b0C to over 200 \u00b0C<\/strong>, which allows the material to work in the most demanding thermal conditions.<\/p>\n

             <\/p>","protected":false},"excerpt":{"rendered":"

            PBT is a tough and dimensionally stable material with good resistance to abrasion, chemicals and weathering, as well as excellent electrical insulation properties.<\/p>","protected":false},"author":1,"featured_media":0,"parent":91,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-712","page","type-page","status-publish","czr-hentry"],"_links":{"self":[{"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/pages\/712","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/comments?post=712"}],"version-history":[{"count":10,"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/pages\/712\/revisions"}],"predecessor-version":[{"id":1213,"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/pages\/712\/revisions\/1213"}],"up":[{"embeddable":true,"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/pages\/91"}],"wp:attachment":[{"href":"https:\/\/tera.si\/en\/wp-json\/wp\/v2\/media?parent=712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}