Dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy anticorrosive coating and preparation method thereof

An epoxy anti-corrosion coating and dendritic technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve problems such as poor solvent resistance, VOC pollution, and poor toughness of water-based anti-corrosion coatings, and achieve surface matching. Strong bit, low cost, large specific surface effect
CN101798484AInactive Publication Date: 2010-08-11SICHUAN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2010-08-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy anticorrosive coating and a preparation method thereof. Compositions of the coating mainly comprise dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy emulsion, anticorrosive pigment and filler, pigment dispersing agent, a film forming aid, a water-based additive, a cross-linking curing agent and deionized water, wherein the dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy emulsion is prepared by the following steps: prepolymerizing a polyurethane hydrophilic branch; preparing a dendritic polyurethane intermediate product by adopting hyperbranched synthesis technology; inoculating organic-inorganic hybrid into a nano material by adopting a in-situ polymerization; and simultaneously grafting epoxy resin with hydroxyl; and the prepared emulsion is compounded with the anticorrosive pigment and filler and the like to prepare the anticorrosive coating. The anticorrosive coating radically solves the VOC pollution problem of solvent-type anticorrosive coating, and simultaneously solves a series of problems such as poor roughness, weatherability, ageing resistance, alkali resistance and solvent resistance of the conventional water-borne anticorrosive coating.
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Description

Technical field:

[0001] The invention relates to a polyurethane-epoxy anticorrosion coating, in particular to a dendritic organic-inorganic hybrid waterborne nano polyurethane-epoxy anticorrosion coating for metal anticorrosion and a preparation method thereof. technical background:

[0002] Corrosion of metal materials is a serious problem facing the world. Corrosion not only causes huge economic losses and wastes precious metal resources, but also hinders the development of new technologies and new processes, and destroys normal production and living order, resulting in The economic loss and environmental pollution have attracted more and more attention. According to relevant statistics, China's economic losses caused by corrosion in 2008 reached 1.5 trillion yuan, which was equivalent to 5% of the country's GDP in that year. Economic losses account for at least 3% to 5% of the country's GDP, far greater than the sum of losses caused by earthquakes, tsunamis, floods and o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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