Baoshan Iron & Steel Co., Ltd.

Yigang Dai

Jianping Zhang

Lan Zhu

Yuan Ma

Yuling Ren

Yanliang Zhao

Wenqi Fang

Zhaohui Qiao

Wenqi Zhang

The present invention provides a coated steel plate suitable for an inline thin-film photovoltaic module, comprising a steel substrate and a composite insulating layer on the surface of the steel substrate. The composite insulating layer comprises an insulating base layer and a laser scribing buffer layer; one side of the insulating base layer is the steel substrate, and the other side is the laser scribing buffer layer. The laser scribing buffer layer contains at least one of the following components: SiN, where 0.75≤x:y≤1; and Si(R)O, where R is an element selected from Sb, Au, Cu, Sn, and Ag, and 0<x'≤0.05, 1.9≤y′≤2. Since the silicon nitride and the doped silicon dioxide used in the laser scribing buffer layer can exhibit specific colors, part of the energy of the laser can be absorbed during the laser etching process, and the damage and the loss of insulation of the insulating base layer during etching can be avoided, thereby ensuring that the coated steel plate for inline thin-film photovoltaic modules provided by the present invention has stable working performance. Additionally, the present invention further discloses a method for manufacturing the aforementioned coated steel plate.

Coated steel plate suitable for inline thin-film photovoltaic module and manufacturing method therefor

Disclosed is an aluminium-zinc hot-plated steel plate having excellent weather resistance, corrosion resistance and alkali resistance, and an environmental-friendly surface treating agent therefor, wherein after the surface treatment of the aluminium-zinc hot-plated steel plate using an environmental-friendly surface treating agent consisting of the components of a matrix resin compounded from a particular solvent-free aqueous aliphatic polyurethane dispersion and aqueous polyurethane-acrylic acid copolymer, an organic silicon compound, a matrix resin curing agent, a water-soluble metal salt compound and a high-density polyethylene lubrication auxiliary etc., the formed surface-treated aluminium-zinc hot-plated steel plate has comprehensive properties of excellent weather resistance, corrosion resistance and alkali resistance, and good machine formability etc.

Aluminium-zinc hot-plated steel plate having excellent weather resistance, corrosion resistance and alkali resistance, and manufacturing method and surface treating agent therefor

The invention relates to an inorganic aqueous surface treatment agent for a single-face electrogalvanized, chromium free surface treated steel plate, a single-face electrogalvanized, chromium-free surface treated steel plate used for fuel tanks and a process of making the same. The inorganic aqueous surface treatment agent for a single-face electrogalvanized, chromium free surface treated steel plate comprises the following components: one or more metallic ion compounds comprising at least one of Zn, Mn, Mg, Ni, Aland Ca; one or more vanadium compounds comprising at least one of Vand V; one or more compounds comprising at least one of phosphoric acid, pyrophosphoric acid, metaphosphoric acid, organic phosphoric acid and the ammonium salts thereof; one or more fluoric acid compounds comprising at least one of Zr, Ti, Si and Ha; one or more silane coupling agents comprising at least one of vinyl silane coupling agent, amino silane coupling agent, epoxy silane coupling agent and acryloxy silane coupling agent; a silica sol having a particle diameter less than 100 nm; one or more surfactants comprising at least one of carboxylate, sulfuric acid ester salt, sulfonate and phosphoric acid ester salt; wherein the total solid content in the inorganic aqueous surface treatment agent is 2 wt %-20 wt % of the surface treatment agent. The process for preparing the single-face electrogalvanized chromium-free surface treated steel plate used for fuel tanks comprises the steps of coating the plated surface of the single-face electrogalvanized steel plate with the above surface treatment agent, solidifying at a temperature of 70-100&#xb0; C., and finally oil finishing on the surface to produce a skin film resulting from the surface treatment with a weight of 100-600 mg/m.

Single-face electrogalvanized, chromium-free surface treated steel plate for fuel tank and surface treatment agent

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Shanghai, China

Yigang Dai