34results about How to "Excellent resistance to salt spray" patented technology

The invention relates to a barium-free soft film anti-rust oil. The barium-free soft film anti-rust oil comprises the following components based on the total weight of the barium-free soft film anti-rust oil: 10-20% of refined mineral oil, compound Barium-free rust inhibitor 10-25%, film-forming agent 2-5%, antioxidant 0.5-1.5%, copper corrosion inhibitor 0.1-1.5%, dibutyl phthalate 0.5-3%, Span 80 0.5 ~3%, the balance of dearomatized solvent oil; wherein, the composite barium-free rust inhibitor includes calcium petroleum sulfonate, calcium dinonylnaphthalene sulfonate and gemini imidazoline corrosion inhibitor. The soft film antirust oil of the present invention has low content of solvent oil aromatics and does not contain heavy metals such as barium. While meeting the environmental protection requirements of foreign environmental protection regulations on antirust materials for export metal products, it greatly improves the antirust performance of the product. It is suitable for medium and long-term storage and packaging of ferrous metal products and copper-containing metal workpieces. It has excellent storage stability and does not produce precipitation for a long time. The oil film is thin and easy to clean. It can be assembled with oil.

The invention belongs to the field of paint materials, and in particular relates to a water-based epoxy primer for pre-coated coils and a preparation method thereof. The epoxy primer comprises, in parts by weight: 30-60 parts of water-based epoxy emulsion; pigments and fillers 10-20 parts; 2-6 parts of amino resin; 0.1-0.5 parts of substrate wetting agent; 0-0.5 parts of leveling agent; 1-5 parts of water-based salt spray resistance additive; 10-30 parts of water; amino resin includes Full and / or partially methylated amino resins; substrate wetting agents include one or more of silicone, nonionic, and anionic substrate wetting agents; leveling agents include acrylic leveling agents and / or fluorine modified acrylic leveling agent. In the present invention, by designing a suitable amino group ratio, pigment-base ratio, and selecting suitable additives, the provided epoxy primer can be rapidly cured at a temperature of 200-250°C on a galvanized sheet or a galvanized aluminum sheet, and the formed paint film It has the properties of high hardness, good adhesion, good flexibility, and excellent salt spray resistance time.

The invention discloses an additive pouring sealant used for a wind driven generator and a preparation method thereof. The preparation method is characterized by comprising the following steps of: dewatering and blending 100 parts by weight of vinyl silicone oil, 50-200 parts by weight of aluminium oxide filler, 50-150 parts by weight of fire retardant, 0-15 parts by weight of white carbon black, 0-150 parts by weight of processed calcium carbonate, 10-30 parts by weight of alpha and omega-dimethyl polydimethylsiloxane for 30-200 minutes at the temperature of 120-170DEG C and the vacuum degree of 0.06-0.99mpa to obtain base stock; at the constant temperature, taking 100 parts by weight of base stock, adding 1-4 parts by weight of hydrogen-containing silicone oil and 0-0.06 part by weight of inhibitor, stirring in a stirrer for 20-30 minutes to obtain sealant A; taking 100 parts by weight of base stock, 1-6 parts by weight of platinum catalyst and 0.6-2 parts by weight of tackifier, and stirring in the stirrer to obtain sealant B; evenly mixing the sealant A and the sealant B at the mass ratio of 5:1; and solidifying the mixture is solidified at the room temperature to obtain the additive pouring sealant used for a wind driven generator, wherein the additive pouring sealant used for a wind driven generator has the advantages of high thermal conductivity coefficient, excellent electrical property, high and low temperature impact resistance, salt mist resistance, good adhesive property at high temperature and high moisture, and the fire resistance of V-1 level.

The invention relates to a surface treatment method for an aluminum alloy frame. The surface treatment method comprises the three steps of pretreatment, surface coating and primer and finishing coat spraying. The plasma enhanced chemical vapor deposition coating technology is matched with NaOH-sodium silicate ungrease treatment liquid, barium petroleum sulfonate-hydrochloric acid antirust treatment liquid to conduct surface treatment on the aluminum alloy frame, and the mechanical strength, the corrosion resisting performance and the high-temperature resisting performance of a frame surface coating are improved; and meanwhile, the thickness of the coating is uniform, proceeding of the later paint baking technology is guaranteed, the frame paint baking hardness is increased, and the integral quality of the bicycle frame is improved.