31results about How to "Comply with ROHS standard" patented technology

The invention discloses an environment friendly low-gas-content aluminum alloy ingot which comprises the following components in percentage by weight: 1.6-3.3 percent of Cu, 9.8-11.8 percent of Si, 0-0.29 percent of Mg, 0-0.08 percent of Zn, 0-0.8 percent of Fe, 0-0.48 percent of Mn, 0-0.48 percent of Ni, 0-0.1 percent of Ti, 0-0.1 percent of Pb, 0-0.2 percent of Sn, 0-0.25 percent of other trace elements and the balance of aluminum. Meanwhile, the invention also discloses a production method of the environment friendly low-gas-content aluminum alloy ingot. The environment friendly low-gas-content aluminum alloy ingot has the advantages of low gas and dreg content, high aluminum liquid cleanness and good mechanical and machining properties. The production method has the advantages of low production cost and high efficiency and effectively solves the pollution problem of the secondary aluminum industry.

The invention relates to the technical field of frosted surfaces, and in particular to a frosted surface PCM color-coated steel plate. The plate comprises a color-coated plate body, a first passivation layer is arranged in the lower surface of the color-coated plate body, a back paint layer sprayed on the outer side of the first passivation layer, a second passivation layer is arranged in the upper surface of the color-coated plate body, a weather-proof primer layer arranged in the upper surface of the second passivation layer, and a color finish paint layer sprayed in the upper surface of the weather-proof primer layer. The steel plate has the physical properties of high temperature resistance, chemical resistance and the like, can improve the scratch resistance of the coating and reducethe damage in the use process by adding the colored finish paint layer, has a high use value, conforms to the national green and environment-friendly requirements, does not contain heavy metals, andconforms to the European Union ROHS standard.

The invention discloses spray plating paint, which comprises components with percentage by weight of 10-22 wt% cellulose resin, 6-12 wt% vinyl chloride-acetate copolymer, 0.25-05 wt% micro-molecular directing auxiliary agent, 1.5-4.0 wt% silver slurry and 61.5-82.3 wt% solvent. The spray plating effect of the paint is same as electroplating products, the paint can be used on various plastic adhesive electric products such as ABS, PC, PC+ ABS and the like, and the spraying technology is simple and can be operated conveniently.

The invention relates to a cadmium negative pole used for a secondary nickel-cadmium battery. The cadmium negative pole comprises a current collector and a negative pole material covered on the current collector, and the negative pole material contains a negative pole active substance and negative pole adhesive, wherein the negative pole material also contains a conductive metallic oxide which contains at least two metallic elements. The growth of cadmium dendritic crystals of a battery prepared by adopting the cadmium negative pole is effectively restrained in a charging process, thereby better meeting the requirements on the low-current charge and the high-current discharge of the battery.

The invention relates to a novel non-phosphorus, fluoride-free and heavy-metal-free environmental-friendly coating film agent prepared from biological inositol and a preparation method and application of the novel non-phosphorus, fluoride-free and heavy-metal-free environmental-friendly coating film agent. The novel non-phosphorus, fluoride-free and heavy-metal-free environmental-friendly coating film agent is prepared from the biological inositol and polybasic organic acid in the mol ratio of (1:1)-(1:10). The novel non-phosphorus, fluoride-free and heavy-metal-free environmental-friendly coating film agent has the advantages that the prepared coating film agent is free from phosphorus, fluoride and heavy metal and is truly environmental-friendly; the coating film agent is high in anti-rust performance, excellent in coupling force and adhesive force for molding powder and paint, low in investment and using requirement, applicable to different kinds of metal, high in adhesive force, and capable of meeting the ROHS (Restriction of the use of certain Hazardous Substances) compliant and solving the problems of high fluorine content, poor stability during use, complexity in operation and control and the like of an existing non-phosphorus coating film agent fundamentally.

The invention provides a high-insulation shielding wrapping tape. The high-insulation shielding wrapping tape is composed of upper-layer functional composite fiber cloth, a middle-layer conductive carbon black colloid layer and lower-layer functional composite fiber cloth. The invention further provides a preparation method of the high-insulation shielding wrapping tape; the preparation method selects high-elasticity insulating cloth made of functional composite fibers, and a high-viscosity conductive composite binding agent is produced by applying a polymerization reaction technology; a clamping type dry type compounding technology is adopted and vacuum drying is carried out to prepare the high-insulation shielding wrapping tape. The high-insulation shielding wrapping tape has the characteristics of insulating surface, conductive and shielding inner part, heat resistance, light specific gravity, softness, easiness for wrapping, environment protection and the like and is widely applied.

The invention relates to a fluorine plastic insulated fireproof control cable which comprises an inner cable core and an outer cable layer coated outside the inner cable core, wherein the interior of the inner cable core sequentially comprises a conductor wire core, a fireproof layer and an insulating layer from inside to outside; the interior of the outer cable layer sequentially comprises a flame retardant coating belt and a jacket layer from inside to outside; and a gap between the outer cable layer and the inner cable core is internally provided with a flame retardant filler. Both the insulating layer and the jacket layer of the cable are made of fluorine plastic, and the cable is a chemically stable, flame retardant, halogen free and environmental-friendly material resistant to high and low temperature, fire and corrosion. During combustion, the cable release no harmful gas and smog, can be used in hostile and special environment at about 200 DEG C and has clean and smooth appearance, weather proofing, chemical corrosion resistance, good stability, high and low temperature resistance, low smog, no halogen, environmental protection and flame retardance.

The invention relates to the technology field of coating, in particular to a top-coated coating of water-based UV-light curing vacuum coating; the invention is composed of modified polyurethane acrylic acid, an evocating agent, a surface additive, a latent solvent and water, wherein the modified polyurethane acrylic acid is obtained by synthesis of high molecular polymer, chain extender, an emulsifying agent, a light curing agent, a catalyst and organic amine; the invention not only has high hardness and good wear resistance, but also has strong adhesive force to the metal, particularly has the water solubility and the oil solubility simultaneously, has wide application range, and conforms to the EU ROHS standard.

The invention discloses a red copper member natural color passivation process, which comprises: immersing a red copper member into a solution a, and removing oil; at a room temperature, immersing the red copper member into tap water, and carrying out water washing; polishing the red copper member through a solution b; at a room temperature, carrying out flowing water washing on the red copper member through tap water; removing surface floating copper from the red copper member through a solution c; at a room temperature, carrying out flowing water washing on the red copper member through tap water; carrying out acid washing on the red copper member through a solution d; carrying out flowing water washing on the red copper member through tap water; carrying out passivation on the red copper member through a copper member passivation agent; carrying out flowing water washing on the red copper member through tap water; immersing the red copper member into a solution e; carrying out flowing water washing on the red copper member through tap water; carrying out blow drying on the red copper member through compressed air; and drying the obtained red copper member at a temperature of 80-110 DEG C. According to the present invention, the natural color passivation operation is performed on the red copper member through the steps, such that the corrosion resistance is improved, the general protection requirements are met, and the European Union ROHS standard is met.

The invention discloses a highly corrosion-resistant zinc coating sealing agent. The highly corrosion-resistant zinc coating sealing agent is composed of 60-80% of water-soluble acrylic resin, 20-30%of modified silane, 0.2-0.8% of cerous nitrate, 0.2-0.8% of lanthanum nitrate and pure water as balance. The highly corrosion-resistant zinc coating sealing agent is a novel thin and uniform sealing agent and can improve the salt fog testing performance of common zinc coatings by 2-3 times; meanwhile, the highly corrosion-resistant zinc coating sealing agent is high in environment-friendly performance and meet the ROHS (restriction of the use of certain hazardous substances) standards of the European Union, and compared with common commercially available products, can prolong the service cycleof working liquor by more than 2 times; besides, the highly corrosion-resistant zinc coating sealing agent is higher in back-plating demolding performance and rack cleaning performance compared withthe commercially available products.

The invention provides a high-voltage resistant cable sheath material which contains the following raw materials: 70-80 parts of metallocene polyethylene, 6-12 parts of polymethacrylate resins, 12-18parts of ethylene-vinyl acetate copolymers, 1-3 parts of expanded graphite, 4-8 parts of paraffin, 8-16 parts of a plasticizer, 2-6 parts of a lubricating agent, 8-16 parts of carbon black, 0.2-0.6 part of thiopropyl dilauryl ester, 3-6 parts of magnesium hydroxide, 2-5 parts of a heat stabilizer and 25-35 parts of modified fillers. The preparation method comprises the following steps: adding theplasticizer, magnesium hydroxide, thiopropyl dilauryl ester and modified fillers into a three-roll grinder to be ground into slurry; and kneading the slurry and the rest raw materials, and performingtwin-screw extrusion granulation. The high-voltage resistant cable sheath material has excellent insulation and flame retardant properties and high hardness.

The invention discloses a chromate-free passivation solution which is prepared from the following substances of, by weight, 5 to 35 percent of water-based functional siloxane oligomer, 1 to 15ML/L ofphytic acid, 1 to 20ML/L of phosphoric acid, 1 to 8g/L of zinc ion, and the balance water. The invention further provides a preparation method of the chromate-free passivation solution. The water-based functional siloxane oligomer and the phytic acid jointly form a film forming matter of a passivation film. The phosphoric acid and the zinc ion form an auxiliary forming film. The formula provided by the invention is completely free of chromium elements so as to be environmentally friendly. The chromate-free passivation solution provided by the invention can solve the problem of chromium pollution caused by current chromium passivation, and is the environment-friendly passivation solution free of any heavy metal.

The invention discloses a comprehensive waterproof aluminum alloy power cable with overload resistance and high temperature resistance. The comprehensive waterproof aluminum alloy power cable comprises cable inner cores and cable outer layers wrapped outside the cable inner cores, wherein each cable inner core consists of a conducting cable core and an insulating layer of a conductor water blocking layer from inside to outside in sequence; each cable outer layer consists of a wrapping tape, a comprehensive waterproof layer and a protective jacket from inside to outside in sequence, and a water blocking filler is arranged among the cable inner cores; the insulating layer is made of a 150-DEG C halogen-free flame retardant radiation insulating material; each wrapping tape is a high-expansion water blocking wrapping tape with insulation and hygroscopicity; and the protective jacket is made of a thermoplastic protective jacket material. According to the comprehensive waterproof aluminum alloy power cable, the halogen-free flame retardant radiation insulating material is adopted because of insulation; the aluminum alloy power cable has comprehensive waterproof performance, and is resistant to heat and high temperature, large in carrying capacity, high in overload protection capacity, resistant to aging and cracking, high in bending performance, stable in electrical insulation performance, long in service life, free of hydracid gas release during combustion, non-toxic and environment-friendly, and the power cable is self-extinguished when leaving away from fire, so that the emission of toxic and corrosive gas and the generation of smoke can be greatly reduced.

The invention discloses a novel environment-friendly nontoxic epoxy floor coating and a preparation method thereof. The novel environment-friendly nontoxic epoxy floor coating is prepared from a component A and a component B. During use, the two components are mixed; wherein the component A is prepared from the following synthetic raw materials in parts by weight: 40-60 parts of low-molecular-weight epoxy resin, 5-10 parts of a reactive reactive diluent, 0.5-1 part of a dispersing agent, 0.2-0.5 part of a leveling agent, 0.2-0.5 part of an antifoaming agent, 5-10 parts of an organic pigment, 40-50 parts of quartzite and 0.2-0.5 part of a wetting agent; and the component B is a modified alicyclic amine curing agent. The novel environment-friendly non-toxic epoxy floor coating meets the requirements of the market for environment and environmental protection, meets VOC emission, meets the European Union ROHS standard, and is high in decoration, high in corrosion resistance, environmentally friendly, non-toxic and suitable for large-scale application and popularization.

The invention discloses a composite zinc coating sealing agent with excellent scratch resistance. The composite zinc coating sealing agent is prepared from the following raw materials in parts by weight and volume: 10 g/L to 200 g/L of sodium metasilicate pentahydrate, 5 g/L to 100 g/L of triethanolamine, 50 g/L to 300 g/L of waterborne polyurethane resin, 10 g/L to 200 g/L of a silane coupling agent and 0.5 g/L to 50 g/L of auxiliaries. The sealing agent has excellent scratch resistance and corrosion resistance. The invention further provides a preparation method of the sealing agent.