53 results about "Polybrominated Biphenyls" patented technology

A flame retardant, intumescent pressure sensitive adhesive (PSA) composition for EMI shielding gaskets, tapes, wraps, and the like. The composition is formulated as an admixture of: (a) a PSA component; (b) a halogenated first flame retardant component; (c) a metal-based second flame retardant component; and (d) a filler component of expandable, intercalated graphite particles. In a representative embodiment the PSA component (a) is acrylic-based, the halogenated first flame retardant component (b) is a polybrominated diphenyl compound such as decabromodiphenyl oxide or decabromodiphenyl ether, the metal oxide-based second flame retardant component (c) is antimony oxide, antimony trioxide, or antimony pentoxide, and the filler component (d) is graphite flake.

A low-temperature-resistant, oil-resistant, flame-retardant and environmentally friendly CPE rubber sheath material, comprising the following raw materials in parts by weight: 40-50 parts by weight of CPE resin, 3-6 parts of plasticizer, 14-20 parts of reinforcing agent, 10-20 parts of filler calcium carbonate, Talc powder 15~20, environmental stabilizer 2~4, hydrogen chloride absorbent 2~3, lubricant 2~5, flame retardant 4~8, vulcanizing agent 1.5~2, co-vulcanizing agent 1.5~2. The environmental protection CPE rubber sheath material of low temperature resistance and oil resistance group prepared according to the present invention can replace the rubber sheath material containing heavy metals, polybrominated biphenyls and ethers, etc. , significant social benefits, will not cause pollution to the environment; can be used for power cables and mine cables, marine cables, electrical equipment lines, etc., so that the low temperature resistance, oil resistance and flame retardancy of cables and wires are greatly improved compared with the rubber commonly used today.

The invention relates to a high electrical property, high temperature resistant, wear resistant and environmental protection plastic insulating material not including substances such as heavy metal plumbum (Pb), cadmium (Cd), hydrargyrum (Hg), hexavalent chrome (Cr), polybrominated diphenyl and ether class, etc. which disobey the environmental protection requirement, and a preparation method thereof. The material is prepared by the following raw materials according to the parts by weight: 40-50 parts of PVC resin, 20-25 parts of trimellitate high temperature resistant plasticizer, 2-8 parts of bis ethylhexyl phthalate plasticizer, 3-8 parts of environmental protection stabilizer, 0.5-0.8 parts of lubricant, 5-10 parts of electrical modifier, 10-25 parts of bulking agent, and 0.6-2 parts of coloring agent; the environmental protection plastic insulating material not only can meet the environmental protection performance requirement, but also can meet the requirements of the wire and the cable to the electrical property, the high temperature performance and the wear resistant property of the plastic insulating material.

The invention discloses an environment-friendly crystalline silicon solar-cell back surface field silver-aluminium paste and a preparation method thereof. The silver-aluminium paste comprises the following components in percentage by weight: 15-35% of silver powder, 30-70% of aluminium powder, 10-15% of organic carrier, 1-5% of adhesive, 3.5-13% of solvent and 0.5-2% of dispersant. The organic carrier is prepared by dissolving 10-30% of ethyl cellulose resin in 70-90% of organic solvent. In the paste, environment-friendly glass powder without harmful substances is used as the adhesive, and an environment-friendly organic reagent is used as a solvent and a diluter; and thus, the prepared silver-aluminium paste does not contain six substances (Pb, Cd, Hg, Cr(VI), polybrominated diphenyl PBB and polybrominated diphenyl ether PBDE) inhibited by European Union RoHS Instruction, completely conforms to the Instruction 2005/84/EC on phthalic ester in European Union RoHS, realizes environment friendliness in deed, and is beneficial to the import and export of solar cells made in China and raw materials of the cells.

The invention provides a coating composition, which comprises maleic anhydride modified abietic resin, a water-soluble alkaline substance, a film-forming substance and a solvent. The solid content of the composition is 30 to 45 weight percent, and the pH value is 7 to 11. The invention also provides a steel composite material, which comprises a base material and an anticorrosive coating which is attached to the surface of the base material. The anticorrosive coating is a product which is cured by the provided coating composition. The coating composition can provide short-term anticorrosion for steel, in particular steel rails. Therefore, the coating composition can improve the appearance quality and service life of the steel. The coating composition does not contain Pb, Cd, Hg, Cr6+, polybrominated diphenyl ethers (PBDE) and polybrominated biphenyls (PBB) regulated in a RoHS instruction, and is environment-friendly.

The invention discloses an environment-friendly flame-retardant modified HIPS (high impact polystyrene) LCDTV (liquid crystal display television) casing and a preparation method thereof. The flame-retardant modified HIPS LCDTV casing contains no toxic and harmful substances such as polybrominated biphenyls, poly brominated diphenyl ethers and the like, the restriction of the use of certain hazardous substances in electrical and electronic equipment and REACH (registration, evaluation, authorization and restriction of chemicals) regulation requirements are met, and the flammability meets the UL-94V-0 grade. The environment-friendly flame-retardant modified HIPS LCDTV casing comprises raw materials by mass as follows: 45-70 parts of HIPS resin, 5-30 parts of GPPS (general purpose polystyrene) resin, 5-10 parts of thermoplastic styrene butadiene rubber SBS, 10-16 parts of decabromodiphenyl ethane, 4-6 parts of antimonous trioxide, 3-7 parts of mineral oil, 0.2-0.5 part of an antioxidant B215, 0.5-1.0 part of a lubricant and 0.9-1.5 parts of carbon black.

The invention provides nostoc capable of degrading polychlorinated biphenyls. A frond of the nostoc is multicellular protonema, has algal filaments and a colloid sheath, and can fix inorganic nitrogen. The nostoc can degrade polychlorinated biphenyl (PCB) 1254 efficiently; after the nostoc is exposed for a week, the degradation efficiency of the nostoc on the PCB1254 is over 60 percent, and the content of residual chlorine ions tested in a culture medium after the degradation and dechloridation of the PCB1254 is 2.26mg/L and 3.01mg/L; the one-month degradation efficiency of the nostoc on six typical indicative polychlorinated biphenyl (PCB52, PCB101, PCB118, PCB138, PCB137 and PCB180) in environment is more than 70 percent, wherein the degradation rate of the PCB52 is 98.7 percent; and after the PCB1254 is degraded for one month, the residual amount of the PCB1254 in the culture medium is only 15.65 percent. Therefore, the nostoc can be widely applied to the degradation of the PCBs insoil environment.

The invention discloses screening and application of a polybrominated diphenyl ethers (PBDEs) degrading bacterium, and belongs to the technical field of biological treatment of environmental pollutants. The PBDEs degrading bacterium comes from soil contaminated by PBDEs and is obtained through artificial enrichment, separation and purification. The strain is a stenotrophomonas pavanii strain WZN-1 and is preserved in the China General Microbiological Culture Collection Center, the preservation date is August 30, 2016, and the preservation serial number is CGMCC No.12918. The WZN-1 strain is a Gram-negative bacterium, is faint yellow and presents a milk white and non-transparent circular bacterial colony with the surface raised; in a scanning electron microscope, the bacterium is in a rod shape, and the diameter is (0.5-0.7) micrometer*(1-2) micrometer. In a liquid culture medium, the strain has the good degrading capability on both decabromodiphenyl ether (BDE 209) and tetrabromodiphenyl ether (BDE 47).

The invention belongs to the field of recycling and resource recovery of electronic solid wastes and particularly relates to a two-step all-component recycling method of waste circuit boards. The method includes the steps that (1) the waste circuit boards are cut, a non-proton organic swelling agent is added so that epoxy resin-glass fiber composite materials in substrates of the circuit boards can be subjected to swelling, the epoxy resin-glass fiber composite materials are swelled and become fluffy, and meanwhile the interface portions between the epoxy resin-glass fiber composite materialsand copper foils on copper-clad plates are separated; and (2) the swelled circuit board substrates are immersed in a proper catalyst-solvent system, then the epoxy resin-glass fiber composite materials are degraded, the epoxy resins are degraded into soluble low polymers, the epoxy resin low polymers are dissolved through the non-proton organic solvent, and glass fibers, polybrominated biphenyls,the copper foils and other metal components in the waste circuit boards can be recycled. By means of the two-step all-component recycling method of the waste circuit boards, all-component recycling ofthe waste circuit boards is achieved.

The invention discloses a high-flame-retardancy chlorinated polyethylene cable material which is prepared from the following raw materials in parts by weight: 100 parts of chlorinated polyethylene, 20-35 parts of ethylene propylene diene monomer rubber, 2-8 parts of magnesium oxide, 1-3 parts of stearic acid, 1-2.5 parts of dicumyl peroxide, 2-5 parts of 1,3,5-trimercapto-2,4,6-sym-triazine, 5-10 parts of white carbon black, 2-5 parts of magnesium hydroxide, 10-18 parts of aluminum hydroxide, 5-20 parts of modified carbon nanotube, 10-18 parts of talcum powder, 1-3 parts of anti-aging agent, 2-4 parts of accelerator, 3-10 parts of polybrominated diphenyl ether, 3-15 parts of trioctyl trimellitate, 1-5 parts of microcrystalline wax and 2-5 parts of rosin-polythylene oxide ester. The high-flame-retardancy chlorinated polyethylene cable material disclosed by the invention has the advantages of favorable flame retardancy, excellent processability, excellent mechanical properties and long service life, and can adapt to the operating requirements for multiple environments.

The invention relates to an environment-friendly ink paste for automobile glass and a preparation method thereof. The ink paste is characterized by comprising 8-45wt% of a carbon black powder with average particle size in the range of 0.2-8 mum, 3-15wt% of a carrier, 2-15wt% of a solvent, 0.5-2wt% of a dispersing agent and the balance of a binder. The ink paste for automotive glass provided by the invention uses an environment-friendly glass powder as the binder, and an environment-friendly organic reagent as the solvent and a diluent; the prepared paste does not contain the six substances prohibited by the EU RoHS directive (Pb, Cd, Hg, Cr (VI), polybrominated biphenyls PBB and poly brominated diphenyl ethers PBDE) and is in line with the EU RoHS directive 2005 / 84 / EC concerning phthalate, so as to achieve a true sense of environmental protection, and benefit import and export of domestic ink for automobile glass.

The invention discloses a nano-clay and nitrogen phosphorus flame retardant synergistic flame retardant polypropylene material and a preparation method thereof. The nano-clay and nitrogen phosphorus flame retardant synergistic flame retardant polypropylene material comprises the following components: by weight, 62%-71% of polypropylene, 25% - 30% of a nitrogen and phosphorus flame retardant, 1%-3% of nano-clay and 3%-5% of a compatibilizer. The nano-clay and nitrogen phosphorus flame retardant synergistic flame retardant polypropylene material does not contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and poly brominated diphenyl ethers and other harmful substances, is low in heat producing quantity and producing smoke quantity in the process of burning, is less in damages to the environment and the human body, the nano-clay is dispersed evenly in the material, and while improvement of flame retardant properties, physical and mechanical properties and processability of the material can be maximumly maintained.

The invention discloses an environment-friendly plastic for athletic tracks and a preparation method thereof. The plastic comprises the following components according to the weight ratio: polyvinyl alcohol, talcum powder, stearic acid butyl ester, polyurethane, stearic acid amide and inorganic pigments. The preparation method of the plastic comprises the following steps: firstly placing the polyvinyl alcohol, the stearic acid butyl ester, the polyurethane and the stearic acid amide in a reaction container in proportion, reacting at the temperature of 60 DEG C for 2 hours, then adding the talcum powder and the inorganic pigments under stirring conditions, stirring and heating to 110 DEG C, and reacting for 4 hours to obtain the environment-friendly plastic. The plastic disclosed by the invention has the advantages of reasonable formula, no irritating odor, no toxin and environmental friendliness, and is suitable for manufacturing the athletic tracks; the detection proves that lead, cadmium, polybrominated biphenyls and polybrominated diphenyl ethers are not detected in the environment-friendly plastic disclosed by the invention, the content of mercury is 500-600ppm, and the content of hexavalent chromium is 400-500ppm.

The present invention provides a halogen-free material testing method, which comprises complete digestion testing and halogen testing, wherein the systematic detection is performed on lead, cadmium, mercury, polybrominated biphenyls, polybrominated diphenyl ethers, hexavalent chromium and halogen in the halogen-free material through the complete digestion testing and the halogen testing. According to the present invention, the operation process is provided so as to optimize the halogen-free material detection method, improve the work efficiency, and achieve the accurate testing result.

The invention discloses a detecting method for PBBs (polybrominated biphenyls) in a plastic component of an electronic element. The detecting method comprises the following steps of (a) treating a sample to form particles, wherein the mass of each particle is less than or equal to 0.2g; (b) placing the sample treated in the step (a) into a hexane and acetone mixed solution to carry out microwave extraction, wherein the ratio of the sample to a solvent for extraction is 1: (5-20)g/mL; (c) analyzing the solution extracted in the step (b) by using a GC-MS (Gas Chromatography-Mass Spectrometer), and setting a special chromatographic condition. The analysis method provided by the invention is rapid, high in accuracy and good in repeatability and reproducibility.

The invention discloses an efficient degradation method for a polybrominated diphenyl ethers fire retardant. The degradation method comprises the specific steps that a surfactant is added into the fire retardant, then the mixture is added into a microwave reactor, non-pulse microwave continuous heating is conducted at the temperature of 250-300 DEG C for 1-2 h, and ctivation and enrichment of polybrominated diphenyl ethers are facilitated; then the microwave reactor is put in an ultrasonic environment, and sponge iron/Ag bimetallic catalysts are added, hydrogen is led in; and then strong light with the intensity of 50000 lux irradiates the microwave reactor, and the polybrominated diphenyl ethers fire retardant is degraded through reduction reaction. According to the efficient degradation method, the sponge iron/Ag bimetallic catalysts are combined with the surfactant, the polybrominated diphenyl ethers can be degraded efficiently through reduction reaction, the efficient degradation method is simple, and the degradation efficiency is high.

The invention provides a poly-brominated biphenyl homolog semi-antigen and a preparation method thereof. The structural formula of the semi-antigen is represented in the description. The preparation method comprises a step of reacting TBBPA with bromo-acetic acid in an alkaline environment to introduce a carboxyl group into the terminal end of the phenolic hydroxyl group of TBBPA so as to obtain the semi-antigen. The provided semi-antigen preparation method has the advantages of simpleness, high stability, low cost, and easiness for industrial production. TBBPA semi-antigen can be coupled to carrier protein to prepare TBBPA artificial holoantigen through a carbodiimide method, a mixed acid anhydride method, or an activated ester method. The holoantigen can be used to prepare antibody having the advantages of high specificity and high titer and establish an immuno-PCR biological bar-code method.

The invention discloses a manufacturing method of a high-performance environment-friendly domestic wire. The method comprises the steps of wiredrawing, twisting, co-extruding, detecting, looping, warehousing, and the like. A high purity copper single wire is adopted as a core material, and the core material, an inner-layer uncolored insulating material and an outer-layer colorful insulating material are formed through co-extruding in a mode that three extruders share one machine head after wiredrawing, twisting and forming. The insulating materials adopt a PVC insulating material, the inner and outer layer materials are manufactured through a new raw material ratio and heat stabilizer, and hazardous substances of lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr<6+>), polybrominated diphenyl ethers (PBDE), polybrominated biphenyls (PBB) and the like are not contained, which is more environmentally friendly. According to the manufacturing method of the high-performance environment-friendly domestic wire, the formed wire core material is high in purity, high in overload capacity, low in electricity consumption, good in integrity of the double-layer co-extruding insulating material, good in overall performance, good in insulating performance and free from hazardous substances of lead, chromium and the like, and the requirements of the European Union RoHS environmental directive are met in the environmental protection aspect.

The invention relates to the technical filed of foam production, in particular to polyurethane and a preparation process thereof. In the preparation process, the water of combined polyether reacts with isocyanate to produce carbon dioxide, the carbon dioxide is not an ozone-depleting substance (ODS), and a catalyst promotes the isocyanate and polyether to form a polymer, so that the pore forming performance of the polyurethane is formed, the polyurethane does not produce a bulge phenomenon after being subjected to high temperature, and high temperature resistant performance is formed. The polyurethane has the enough pore-forming performance, the density of the polyurethane can be lower, and accordingly the dimensional stability of the polyurethane is improved. The polyurethane is resistant to high temperature and has good dimensional stability. When the preparation process does not adopt CFCs and HCFCs foaming agents, no ODS or ODP is used for the raw materials and is not used in the production process, an ozone layer in the atmosphere is not damaged, the environment is effectively protected, and the polyurethane meets the limiting value requirements of revised directive 2011/65/EU appendix II of EU RoHS directives 2008/95/E, does not contain cadmium, lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs) and other harmful substances and is an environmentally-friendly product.

The invention discloses an environment-friendly flexible PVC (polyvinyl chloride) cable material and belongs to the field of semiconductive shielding materials. The environment-friendly flexible PVC cable material is prepared from raw materials in parts by weight as follows: 100 parts of PVC, 15-40 parts of a calcium/zinc compound stabilizer, 40-60 parts of a plasticizer, 10-15 parts of epoxidized soybean oil, 5-10 parts of epoxidized butyl oleate, 20-30 parts of calcium carbonate, 10-20 parts of calcined clay and 1-5 parts of a lubricating agent. The cable material does not contain heavy metal such as cadmium, chromium, mercury and the like harmful to a human body and the environment or hazardous substances of PBBs (polybrominated biphenyls) and PBDEs (poly brominated diphenyl ethers).