{"id":623592,"date":"2024-11-05T23:54:19","date_gmt":"2024-11-05T23:54:19","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-72581984\/"},"modified":"2024-11-05T23:54:19","modified_gmt":"2024-11-05T23:54:19","slug":"iso-72581984","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-72581984\/","title":{"rendered":"ISO 7258:1984"},"content":{"rendered":"<p>La pr\u00e9sente Norme internationale sp\u00e9cifie trois m\u00e9thodes permettant de d\u00e9terminer la masse volumique et la densit\u00e9 des tubes en polyt\u00e9trafluor\u00e9thyl\u00e8ne (PTFE) utilis\u00e9s pour la fabrication des assemblages de tuyaux flexibles en PTFE, \u00e0 moyenne et \u00e0 haute pressions et \u00e0 haute temp\u00e9rature, pour usages a\u00e9ronautiques : <\/p>\n<ul>\n<li>M\u00e9thode A &#8212; M\u00e9thode du tube \u00e0 gradient de densit\u00e9 sans cycle de pr\u00e9conditionnement au chauffage et au refroidissement.<\/li>\n<li>M\u00e9thode B &#8212; M\u00e9thode par d\u00e9placement d&#039;eau et d\u00e9termination de la variation de poids. <\/li>\n<li>M\u00e9thode C &#8212; M\u00e9thode du type \u00e0 gradient de densit\u00e9 avec cycle de pr\u00e9conditionnement au chauffage et au refroidissement.<\/li>\n<\/ul>\n<p>NOTE &#8212; L&#039;industrie des tubes en PTFE utilise le terme \u00abdensit\u00e9 apparente\u00bb<br \/>\npour parler de la masse volumique ou de la densit\u00e9 d\u00e9termin\u00e9e<br \/>\npar les m\u00e9thodes A et B. De la m\u00eame mani\u00e8re, elle utilise<br \/>\nle terme \u00abdensit\u00e9\u00bb pour les r\u00e9sultats obtenus par la<br \/>\nm\u00e9thode C.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Tubes en polyt\u00e9trafluor\u00e9thyl\u00e8ne (PTFE) \u00e0 usage a\u00e9ronautique \u2014 M\u00e9thodes de d\u00e9termination de la masse volumique et de la densit\u00e9<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>1984-06<\/td>\n<td>8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":623603,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[827,1187,2634],"product_tag":[],"class_list":{"0":"post-623592","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-49-080","7":"product_cat-83-140-40","8":"product_cat-iso","10":"first","11":"instock","12":"sold-individually","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/623592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/623603"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=623592"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=623592"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=623592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}