A novel marine antifouling coating based on a self-polishing zinc-polyurethane copolymer / Zhengwei Dai in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1333-1343 Titre : A novel marine antifouling coating based on a self-polishing zinc-polyurethane copolymer Type de document : texte imprimé Auteurs : Zhengwei Dai, Auteur ; Miao Cao, Auteur ; Li Shuqing, Auteur ; Jinghua Yao, Auteur ; Bo Wu, Auteur ; Yaping Wang, Auteur ; Huajin Wang, Auteur ; Jun Dong, Auteur ; Jie Yi, Auteur Année de publication : 2021 Article en page(s) : p. 1333-1343 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Composés organiques -- Synthèse Couches minces -- Propriétés mécaniques Marines (peinture) Polyuréthanes Propionique, Acide Revêtements antisalissures:Peinture antisalissures Zinc Index. décimale : 667.9 Revêtements et enduits Résumé : A series of novel zinc-polyurethane copolymers, which contained zinc cations in the form of polymeric salt and can be exchanged with the sodium ions in sea water, was prepared. As the ion exchange reaction proceeded, the zinc-polyurethane copolymers became soluble and leached out by the flow of sea water. The self-polishing rates of marine antifouling coatings formulated with the polymers proved to be easily controlled by the amount of 2,2-bis(hydroxymethyl) propionic acid. Marine field test revealed that zinc-polyurethane antifouling coatings had excellent efficiency in preventing marine biofouling for more than 12 months. These results proved that the zinc-polyurethane copolymers were a good candidate for the preparation of long-efficiency and controllable marine antifouling coatings. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of zinc-polyurethane - Characterization of the zinc-polyurethane films - Characterization of zinc-polyurethane antifouling coatings - RESULTS AND DISCUSSION : Properties of the zinc-polyurethane films - Water contact angle on the surfaces of zinc-polyurethane films - Mechanical properties of zinc-polyurethane films - Water absorption rates of zinc-polyurethane films - Self-polishing properties of zinc-polyurethane films - Properties of the zinc-polyurethane antifouling coatings - Self-polishing rate of the thickness of zinc-polyurethane antifouling coatings - The DCOIT release rates of zinc-polyurethane antifouling coatings - Surface analysis of zinc-polyurethane films and coatings - Assessment of antifouling performance - Table 1 The recipes of zinc-polyurethane antifouling coatings - Table 2 The synthesis of ZnX-PU - Table 3 The acid number of DMPAX-PU - Table 4 The acid number of ZnX-PU - Table 5 The mechanical properties of zinc-polyurethane films - Table 6 The typical images of zinc-polyurethane films - Table 7 The typical images of zinc-polyurethane coatings DOI : https://doi.org/10.1007/s11998-021-00496-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00496-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36436 [article]

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The production of organic fertilizer using tannery sludge / Feng Guo-Tao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 5 (05/2013)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 5 (05/2013) . - p. 189-196 Titre : The production of organic fertilizer using tannery sludge Type de document : texte imprimé Auteurs : Feng Guo-Tao, Auteur ; Shan Zhi-Hua, Auteur ; Li Shuqing, Auteur ; Chen Hui, Auteur Année de publication : 2013 Article en page(s) : p. 189-196 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Boues d'épuration -- Recyclage Boues résiduaires Cuirs et peaux -- Déchets -- Recyclage Engrais organiques Fermentation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The tanning industry is know as a potentially pollution intensive industry. The purpose of this study was the conversion of waste sludge from domestic tannery factories into useful organic fertilizer. The research team at the Tongtian Star Group in Zhejiang Province in China used an aerobic high temperature fermentation process to accomplish this aim, with warehouse-style equipment based on practicality, efficiency, and energy conservation principles. The results indicated that the organic fertilizer produced using bio-fermentation technology with integrated tannery sludge as a carrier is suitable for use in agriculture and forestry. The components of the organic fertilizer comply with the national standard. The project indicated that it is feasible to produce an organic fertilizer with tannery sludge. Note de contenu : - DEVELOPMENT OF ORGANIC FERTILIZER PRODUCTION FROM TANNERY SLUDGE : Process or organic fertilizer production - Selection of fermentation type - Strain selection and growth conditions - Optimized materials - Preparation and storage of samples - BEHAVIOR OF THE ORGANIC FERTILIZER : Characteristics of the organic fertilizer - Maturity of the organic fertilizer - EFFICACY OF THE ORGANIC FERTLIZER : Osmanthus fragrans experiments - Panicum virgatum experiments - ENVIRONMENTAL IMPACT - INDUSTRIAL APPLICATION En ligne : https://drive.google.com/file/d/1k2MOn57jP5z-ERHvaOSmRbleGEsmMA8Y/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18547 [article]

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