{"id":902,"date":"2020-07-31T09:49:10","date_gmt":"2020-07-31T05:49:10","guid":{"rendered":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/?p=902"},"modified":"2024-03-10T13:56:26","modified_gmt":"2024-03-10T09:56:26","slug":"aqprpf-10-controle-granulometrie-des-poudres","status":"publish","type":"post","link":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/2020\/07\/31\/aqprpf-10-controle-granulometrie-des-poudres\/","title":{"rendered":"AQPrPF 10 : contr\u00f4le granulom\u00e9trie des poudres"},"content":{"rendered":"\n<p><a href=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2024\/03\/AQPrPF-10-V5-controle-granulometrique-des-poudres-SP4.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Derni\u00e8re version en PDF. <\/a><\/p>\n\n\n\n<p>L\u2019<strong>analyse de la granulom\u00e9trie<\/strong> (mesure de la taille des grains) permet de classer les poudres en fonction de la taille de leurs particules. Le&nbsp;tamisage est la s\u00e9paration de particules solides d\u2019apr\u00e8s leurs grosseurs, gr\u00e2ce \u00e0 un jeu de tamis.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Un&nbsp;<strong>tamis<\/strong> est form\u00e9 par un tissage de fils m\u00e9talliques ou de Nylon qui laissent libres entre eux des espaces carr\u00e9s appel\u00e9s ouvertures ou&nbsp;<strong>mailles<\/strong>.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;La distance entre deux fils ou mailles correspond \u00e0 une dimension pr\u00e9cise, exprim\u00e9e en millim\u00e8tres ou en microm\u00e8tres, qui d\u00e9finit le num\u00e9ro du tamis correspondant.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;La pharmacop\u00e9e donne une liste des tamis de contr\u00f4le dont les num\u00e9ros vont de 38 \u00e0 11&nbsp;200 (soit 38 \u03bcm \u00e0 11,2 mm d\u2019ouverture des mailles).<\/p>\n\n\n\n<p>Pour une analyse granulom\u00e9trique d\u2019une poudre, on superpose un certain nombre de tamis dont les dimensions des mailles vont d\u00e9croissant (du tamis sup\u00e9rieur ayant les mailles les plus larges au tamis inf\u00e9rieur ayant les mailles les plus \u00e9troites). L\u2019ensemble est agit\u00e9 pendant environ 10 minutes.&nbsp;<\/p>\n\n\n\n<p>A la fin de l\u2019op\u00e9ration, la fraction de poudre qui se trouve sur chaque tamis est pes\u00e9e, les r\u00e9sultats sont port\u00e9s sur un graphique. L\u2019examen de la courbe obtenue (ou histogramme de fr\u00e9quence ou de r\u00e9partition) permet de recueillir les renseignements sur la r\u00e9partition granulom\u00e9trique et l\u2019homog\u00e9n\u00e9it\u00e9 des diff\u00e9rentes particules d\u2019une poudre.<\/p>\n\n\n\n<p><strong>1- Protocole&nbsp;:<\/strong><\/p>\n\n\n\n<p>&#8211; Pr\u00e9parer les tamis suivants<\/p>\n\n\n\n<ul><li>Diam\u00e8tre 2,500 mm,<\/li><li>Diam\u00e8tre 1,250 mm,<\/li><li>Diam\u00e8tre 0,800 mm,<\/li><li>Diam\u00e8tre 0,500 mm,<\/li><li>Diam\u00e8tre 0,250 mm.<\/li><\/ul>\n\n\n\n<p>&#8211; Sortir le fond r\u00e9cepteur.<\/p>\n\n\n\n<p>&#8211; V\u00e9rifier les tamis, ils doivent \u00eatre propres et secs.<\/p>\n\n\n\n<p>&#8211; Peser chaque tamis et le fond r\u00e9cepteur sur une balance au 0,1 g pr\u00e8s (au moins). Compl\u00e9ter la fiche de contr\u00f4le.<\/p>\n\n\n\n<p>&#8211; Peser 200,0 g de poudre \u00e0 analyser.<\/p>\n\n\n\n<p>&#8211; Proc\u00e9der au tamisage selon la proc\u00e9dure&nbsp;<strong><a href=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/2020\/07\/12\/aqprma-05-tamiseur\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"AQPrMa 05 (opens in a new tab)\">AQPrMa 05<\/a><\/strong>.<\/p>\n\n\n\n<p>&#8211; Peser chaque tamis et le fond r\u00e9cepteur sur une balance au 0,1 g pr\u00e8s (au moins). Compl\u00e9ter la fiche de contr\u00f4le.<\/p>\n\n\n\n<p>&#8211; R\u00e9cup\u00e9rer les fragments de poudre.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#8211; Nettoyer \u00e0 sec (sans mouiller les tamis) tout le mat\u00e9riel.<\/p>\n\n\n\n<p><strong>2- R\u00e9sultats et interpr\u00e9tation.<\/strong><\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#8211; Compl\u00e9ter les tableaux de masses.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#8211; Compl\u00e9ter le tableau de r\u00e9partition et conclure sur l\u2019homog\u00e9n\u00e9it\u00e9 de la poudre.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#8211; Sur papier millim\u00e9tr\u00e9, faire le diagramme de r\u00e9partition.<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#8211; A l\u2019aide du tableau ci-dessous conclure sur la classification de la poudre analys\u00e9e.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"490\" height=\"84\" src=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im1.png\" alt=\"\" class=\"wp-image-903\" srcset=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im1.png 490w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im1-300x51.png 300w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im1-150x26.png 150w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im1-250x43.png 250w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"553\" height=\"624\" src=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im2.png\" alt=\"\" class=\"wp-image-904\" srcset=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im2.png 553w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im2-266x300.png 266w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im2-133x150.png 133w\" sizes=\"(max-width: 553px) 100vw, 553px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"506\" height=\"686\" src=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im3.png\" alt=\"\" class=\"wp-image-905\" srcset=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im3.png 506w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im3-221x300.png 221w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im3-111x150.png 111w\" sizes=\"(max-width: 506px) 100vw, 506px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"559\" height=\"620\" src=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im4.png\" alt=\"\" class=\"wp-image-906\" srcset=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im4.png 559w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im4-270x300.png 270w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im4-135x150.png 135w\" sizes=\"(max-width: 559px) 100vw, 559px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" loading=\"lazy\" width=\"486\" height=\"694\" src=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im5.png\" alt=\"\" class=\"wp-image-907\" srcset=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im5.png 486w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im5-210x300.png 210w, https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/files\/2020\/07\/PF10-im5-105x150.png 105w\" sizes=\"(max-width: 486px) 100vw, 486px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Derni\u00e8re version en PDF. L\u2019analyse de la granulom\u00e9trie (mesure de la taille des grains) permet de classer les poudres en fonction de la taille de leurs particules. Le&nbsp;tamisage est la s\u00e9paration de particules solides d\u2019apr\u00e8s leurs grosseurs, gr\u00e2ce \u00e0 un jeu de tamis. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Un&nbsp;tamis est form\u00e9 par un tissage de&#8230; <a class=\"continue-reading-link\" href=\"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/2020\/07\/31\/aqprpf-10-controle-granulometrie-des-poudres\/\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":473,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_links_to":"","_links_to_target":""},"categories":[16],"tags":[263,236,264,265],"_links":{"self":[{"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/posts\/902"}],"collection":[{"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/users\/473"}],"replies":[{"embeddable":true,"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/comments?post=902"}],"version-history":[{"count":2,"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/posts\/902\/revisions"}],"predecessor-version":[{"id":1930,"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/posts\/902\/revisions\/1930"}],"wp:attachment":[{"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/media?parent=902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/categories?post=902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/portail.stpaul4.ac-reunion.fr\/wordpress\/process\/wp-json\/wp\/v2\/tags?post=902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}