{"id":8548,"date":"2024-05-10T08:10:55","date_gmt":"2024-05-10T08:10:55","guid":{"rendered":"https:\/\/www.ifanfittings.com\/?p=8548"},"modified":"2026-01-08T15:30:02","modified_gmt":"2026-01-08T07:30:02","slug":"a-propos-des-tubes-ppr","status":"publish","type":"post","link":"https:\/\/www.waterpipefactory.com\/fr\/connaissance\/a-propos-des-tubes-ppr\/","title":{"rendered":"\u00c0 propos de PPR"},"content":{"rendered":"

1. Quels sont les avantages du PPR<\/h3>\n\n\n\n

Le PPR (polypropyl\u00e8ne al\u00e9atoire), \u00e9galement appel\u00e9 polypropyl\u00e8ne copolym\u00e8re al\u00e9atoire (PPR), pr\u00e9sente une bonne t\u00e9nacit\u00e9, une r\u00e9sistance m\u00e9canique \u00e9lev\u00e9e, d'excellentes performances de mise en \u0153uvre, une bonne r\u00e9sistance au fluage \u00e0 haute temp\u00e9rature et l'avantage unique de sa transparence \u00e9lev\u00e9e. Il est largement utilis\u00e9 dans la production de tubes, de plaques, de produits d'usage courant, de mat\u00e9riaux d'emballage, de composants d'appareils \u00e9lectrom\u00e9nagers et de divers films minces.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

2. Qu'est-ce qu'un tube PPR<\/h3>\n\n\n\n

Les tubes PP-R, \u00e9galement appel\u00e9s tubes en polypropyl\u00e8ne de type III ou polypropyl\u00e8ne copolym\u00e8re al\u00e9atoire, sont fabriqu\u00e9s \u00e0 partir de polypropyl\u00e8ne copolym\u00e8re al\u00e9atoire extrud\u00e9 en tubes ou moul\u00e9 par injection en raccords. L'\u00e9thyl\u00e8ne est le monom\u00e8re le plus couramment utilis\u00e9, ce qui modifie les propri\u00e9t\u00e9s physiques du polypropyl\u00e8ne. Compar\u00e9s au PP homopolym\u00e8re, les copolym\u00e8res al\u00e9atoires am\u00e9liorent les propri\u00e9t\u00e9s optiques, la r\u00e9sistance aux chocs, la flexibilit\u00e9, abaissent la temp\u00e9rature de fusion et donc la temp\u00e9rature de fusion \u00e0 chaud. Parall\u00e8lement, ils pr\u00e9sentent des caract\u00e9ristiques similaires \u00e0 celles des homopolym\u00e8res en termes de stabilit\u00e9 chimique, d'isolation \u00e0 la vapeur d'eau et de performances sensorielles. Ils sont utilis\u00e9s dans les domaines de l'extrusion, du soufflage, du moulage par injection, de l'extrusion de films et de feuilles, ainsi que comme mat\u00e9riaux d'emballage alimentaire, pharmaceutique et de biens de consommation courante.<\/p>\n\n\n\n

3. Quelles sont les utilisations des tubes PPR<\/h3>\n\n\n\n

Compar\u00e9s aux tuyaux traditionnels en fonte, en acier galvanis\u00e9, en ciment et autres canalisations, les tuyaux PPR pr\u00e9sentent les avantages suivants\u00a0: \u00e9conomie d'\u00e9nergie, protection de l'environnement, l\u00e9g\u00e8ret\u00e9, haute r\u00e9sistance, r\u00e9sistance \u00e0 la corrosion et longue dur\u00e9e de vie. Ils sont largement utilis\u00e9s dans la construction, l'approvisionnement en eau et le drainage urbains et ruraux, le gaz urbain, les gaines de c\u00e2bles \u00e9lectriques et \u00e0 fibre optique, le transport de fluides industriels, l'irrigation agricole et d'autres secteurs de la construction, municipaux, industriels et agricoles.<\/p>\n\n\n\n

4. Propri\u00e9t\u00e9s physiques des tubes PPR<\/h3>\n\n\n\n

Propri\u00e9t\u00e9s physiques\u00a0: En r\u00e8gle g\u00e9n\u00e9rale, les copolym\u00e8res PP al\u00e9atoires pr\u00e9sentent une meilleure flexibilit\u00e9 et une rigidit\u00e9 inf\u00e9rieure \u00e0 celle des homopolym\u00e8res PP. Ils peuvent conserver une r\u00e9sistance aux chocs mod\u00e9r\u00e9e lorsque la temp\u00e9rature descend jusqu'\u00e0 0 \u00b0C. Cependant, leur utilit\u00e9 est limit\u00e9e lorsque la temp\u00e9rature descend jusqu'\u00e0 -20 \u00b0C. Le module de flexion (module s\u00e9cant \u00e0 la d\u00e9formation 1%) du copolym\u00e8re est compris entre 483 et 1\u00a0034 MPa, tandis que celui de l'homopolym\u00e8re est compris entre 1\u00a0034 et 1\u00a0379 MPa. La masse mol\u00e9culaire du copolym\u00e8re PP a moins d'impact sur la rigidit\u00e9 que celle de l'homopolym\u00e8re PP. La r\u00e9sistance aux chocs des poutres en porte-\u00e0-faux avec entailles est g\u00e9n\u00e9ralement comprise entre 0,8 et 1,4 pied\u00b7livre\/pouce.<\/p>\n\n\n\n

5. Propri\u00e9t\u00e9s chimiques des tubes PPR<\/h3>\n\n\n\n

Propri\u00e9t\u00e9s chimiques\u00a0: Copolym\u00e8re PP al\u00e9atoire pour acide. Les alcalis, les alcools, les solvants hydrocarbon\u00e9s \u00e0 bas point d'\u00e9bullition et de nombreux produits chimiques organiques pr\u00e9sentent une forte r\u00e9sistance \u00e0 leurs effets. \u00c0 temp\u00e9rature ambiante, les copolym\u00e8res PP sont pratiquement insolubles dans la plupart des solvants organiques. De plus, lorsqu'ils sont expos\u00e9s au savon et \u00e0 la lessive de savon, ils ne subissent pas de dommages dus aux fractures de contrainte environnementale contrairement \u00e0 de nombreux autres polym\u00e8res. Au contact de certains produits chimiques, notamment les hydrocarbures liquides, les compos\u00e9s organiques chlor\u00e9s et les agents oxydants forts peuvent provoquer des fissures ou un gonflement de surface. Les compos\u00e9s apolaires sont g\u00e9n\u00e9ralement plus facilement absorb\u00e9s par le polypropyl\u00e8ne que les compos\u00e9s polaires. Ses mol\u00e9cules ne contiennent que des \u00e9l\u00e9ments carbone et hydrog\u00e8ne, et ne contiennent aucun \u00e9l\u00e9ment nocif ou toxique.<\/p>","protected":false},"excerpt":{"rendered":"

1.What are the advantages of PPR PPR (polypropylene random), also known as random copolymer polypropylene (PPR), has good toughness, high strength, excellent processing performance, good creep resistance at higher temperatures, and has the unique high transparency advantage of random copolymer polypropylene. It can be widely used in the production of pipes, sheets, daily necessities, packaging […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[91],"tags":[185,622,186,953,915],"class_list":["post-8548","post","type-post","status-publish","format-standard","hentry","category-knowledge","tag-ppr","tag-ppr-pipe-fittings","tag-ppr-pipes","tag-ppr-pipework","tag-ppr-tubes"],"yoast_head":"\nAbout PPR Tubes<\/title>\n<meta name=\"description\" content=\"PPR tubes - superior quality, long-lasting, and leak-proof. 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