{"id":11517,"date":"2026-03-23T11:31:46","date_gmt":"2026-03-23T10:31:46","guid":{"rendered":"https:\/\/hybster.com\/matiere-plastique\/hppa-polyphtalamide-fibres-de-verre\/"},"modified":"2026-04-02T22:43:30","modified_gmt":"2026-04-02T20:43:30","slug":"hppa-polyphtalamide-fibres-de-verre","status":"publish","type":"matiere-plastique","link":"https:\/\/hybster.com\/en\/matiere-plastique\/hppa-polyphtalamide-fibres-de-verre\/","title":{"rendered":"HPPA (Polyphtalamide) &#8211; fibres de verre"},"content":{"rendered":"","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false},"famille-de-matiere":[],"class_list":["post-11517","matiere-plastique","type-matiere-plastique","status-publish","hentry"],"acf":{"nom_commercial":"","sigle":"PPA","matiere_famille_brut":"HPPA","renforce":"fibres de verre","filler_reinforcement_raw":"fibres de verre","process_compatibles":"injection","normes_certifications":"UL94 HB, RoHS, FDA","ul94":"HB","tg":125,"tm":310,"hdt":300,"temp_usage_min":-40,"temp_usage_max":200,"temp_transfo_min":320,"temp_transfo_max":360,"retrait_min":0.2,"retrait_max":0.5,"density_g_cm3":"1.36 to 1.74 (ISO 1183)","charpy_notched_iso179_kj_m2":"6.0 to 22","durometer_shore_a":"","durometer_shore_d":"","flexural_modulus_mpa":"8700 to 19000 (ISO 178)","flexural_strength_mpa":"330","tensile_modulus_mpa":"16800 to 20000 (ISO 527-1)","tensile_strength_mpa":"175 to 230 (ISO 527-1, -2)","tensile_elongation_pct":"1.4 to 3.5 (ISO 527-1, -2, Break)","mecanique_note":5,"thermique_note":5,"chimique_note":4,"uv_note":2,"difficulte_injection":5,"recyclabilite_score":2,"mecanique_score":100,"thermique_score":100,"chimique_score":70,"uv_score":30,"process_score":25,"esthetique_score":50,"durabilite_score":90,"cout_score":20,"transparent":false,"contact_alimentaire":false,"recycle":false,"biosource":false,"ignifuge":false,"uv_resistant":false,"recycle_code":"7 (renforc\u00e9 GF)","features":"","commentaire_chimie":"Le PPA pr\u00e9sente une excellente r\u00e9sistance aux huiles moteur \u00e0 haute temp\u00e9rature, aux graisses industrielles et aux carburants. Sa faible absorption d'humidit\u00e9 garantit une stabilit\u00e9 dimensionnelle sup\u00e9rieure. Sensible aux acides forts concentr\u00e9s et bases \u00e0 chaud.","applications_recommandees":"Pi\u00e8ces sous capot moteur haute T\u00b0, connecteurs \u00e9lectriques haute T\u00b0 (> 150 \u00b0C), bo\u00eetiers de capteurs automobiles, pi\u00e8ces de transmission, \u00e9quipements industriels haute performance, remplacement des thermodurcissables","uses":"","faq_recyclage":"Le PPA est difficile \u00e0 recycler en raison de sa structure aromatique et de ses hautes temp\u00e9ratures de transformation. Des programmes de reprise industrielle existent chez certains fabricants. Non destin\u00e9 au recyclage grand public.","faq_injection":"Les grades GF requi\u00e8rent des pressions d'injection plus \u00e9lev\u00e9es. Retrait fortement anisotrope (perpendiculaire aux fibres > dans l'axe). Usure des buses et moules accrue \u2014 aciers nitrur\u00e9s recommand\u00e9s. S\u00e9chage identique au grade de base.","faq_alimentaire":"Le PPA n'est pas adapt\u00e9 aux applications alimentaires. 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