Papers by Author: Qiang Wang

Abstract: In recent years, high-efficiency and low-toxic antifouling coating are predominant in view of environmental protection and public safety. In this paper, a novel coating containing methoxysilane and acrylic resin were synthesized which have special structure to antifouling. We concluded the colonization of benthic diatoms (Nitzschia flosterium) of the novel coating, taking the antifouling coating containing AM(4.3%w\w）, HD-70 (3.4%w\w），VTMO (2.3%w\w）and Cu2O (28.5%w\w）for instance, we obtained that the colonization of Nitzschia flosterium was 4.3*104N.cm-2. A static test site was set up in Number 8-dock of Qingdao harbor, on the East Coast of China to investigate the antifouling effectiveness of the novel antifouling coating. The results of the present paper demonstrate that the novel coating enhanced the antifouling .

Abstract: Biofouling on underwater engineered structures, especially on ship hulls, results in increased operational and maintenance costs. Fouling is not only of an ecological interest, but it is also important from applied and commercial perspectives. With the development of society, widely used Tributyltin compounds (TBT) for biofouling control have been prohibited worldwide at the end of 2008. The need to develop new environment friendly antifouling agents has been highlighted. Herein we report on the synthesis and characterization of a novel cross-linkable copolymer containing a HMBA side chain. The paper is mainly focused on the synthesis of novel resin and its antifouling performance. Apart from use of acrylate monomer, the two other important monomers γ-methacryloxypropyltrimethoxysilane (HD-70) and N-(4-Hydroxy-3-Methoxy-Benzyl) acrylanine (HMBA) were selected to construct low surface energy materials. Finally, the antifouling properties of resins were carried through by the colonization of benthic diatoms (Nitzschia flosterium) and ocean plates of an offshore platform. Experimental results indicated the novel resins containing a HMBA side chain possessing better antifouling properties than a standard polydimethyl siloxane (PDMS) coating in the Qingdao ocean.

Abstract: The superhydrophobic and highly oleophobic cotton textile was obtained by applying particle -based in situ fabrication procedure with the low toxic perfluoropolyether (PFPE) and the silica particles. The water contact angle and salad oil contact angle on the treated cotton textile surface can be achieved to 156.8 º and 143.3 º respectively. The microstructure of the treated cotton textile surface was revealed by scanning electron microscopy (SEM). And the chemical composition of the treated cotton textile surface was determined by the X-ray photoelectron spectroscopy (XPS) analysis. Thermogravimetric (TG) analysis showed that the weight loss of the treated cotton is less than that of the untreated sample.

Abstract: As concerning the high toxicity of organotin paints, the need to develop new environment-friendly antifouling agents has been highlighted. The paper mainly focused on the synthesis of siloxane-acrylic resin and its antifouling performance. The antifouling properties of resins were carried through by the colonization of benthic diatoms (Nitzschia flosterium) and ocean plates of offshore platform. The paper also disclosed that the silicone oil (5.5%, w/w) introduced to siloxane-acrylic resin was significant positive effect for enhancing the antifouling performance in Qingdao ocean.