141results about How to "Non-polluting" patented technology

The invention relates to a flexible circuit conductive composition for a flexible printed circuit board (FPC), a preparation method and a using method thereof. The preparation method comprises the following steps of: adding photocurable resin and an optical activity monomer into a conductive nanometer material dispersion liquid and then preparing the composition by adopting a double-curing mode such as firstly photocuring and then thermal treatment. The photocuring leads the surface coating to be rapidly cured so as to achieve good mechanical property; and the thermal curing leads the coatingto be cured completely so as to reach the deep curing requirements. The thermal treatment leads nanometer metals to be sintered together so as to achieve good conductive performance. The prepared conductive system obtains a predesigned pattern in the specific area of a base material in a screen printing or nanometer impressing mode; the conductive pathway is obtained after the double curing and has the advantages of short curing time, low curing temperature, good electrical conductivity, high resolution ratio; and the prepared conductive film has the advantages of good adhesiveness, high hardness and good flexibility.

The invention provides an aluminum alloy electrode material. The aluminum alloy electrode material comprises 0.1-3 wt% of Mg, 0.05-1 wt% of Sn, 0.01-0.5 wt% of Ga, 0.02-0.1 wt% of RE and the balance Al. According to the aluminum alloy electrode material, an aluminum substrate is doped with a certain amount of magnesium, stannum, gallium and the rare earth element, on the basis of improving the activity of an aluminum anode, through the refining function of the rear earth element on grains, corrosion of the aluminum anode is evener, and the corrosion rate is lowered; meanwhile on the one hand, due to addition of the elements, the electrochemical performance of the aluminum alloy is good; on the other hand, the added elements are free of contamination; and the rare earth element is added in the form of an aluminum rare earth master alloy, and the price is low. The invention further provides a preparation method of the aluminum alloy electrode material and application of the aluminum alloy electrode material in air batteries.

The invention relates to a laser cladding printer. The laser cladding printer comprises a worktable, a position detection system, a laser system, a scanning system, a position regulation device and a control system. According to the laser cladding printer, manufacturing procedures of existing partial circuit boards can be replaced, an effect for directly manufacturing circuits of the circuit board through printing the circuit board on high-temperature-resistant substrates such as ceramics, high polymer materials and the like is achieved, the manufacturing process of the circuit board is simple and pollution-free and is low in cost. Besides, the invention further relates to a manufacturing method of the circuit board by utilizing the laser cladding printer.

The invention relates to a ceramic membrane chemical cleaning system and method which are used for cleaning a ceramic membrane in a water treatment system. The chemical cleaning system comprises an online cleaning part, wherein the online cleaning part comprises a dosing pump and a sucking pump; the dosing pump is coupled onto the ceramic membrane arranged in a membrane pool by virtue of a pipeline, so as to inject a cleaning liquid into the ceramic membrane; the sucking pump is coupled onto the ceramic membrane by virtue of a pipeline, so as to discharge water from a back absorption membrane of the ceramic membrane; and the cleaning liquid on the ceramic membrane is discharged into the membrane pool in a sucking process. The system and method which are provided by the invention can be used for solving the problems of pollution of the ceramic membrane in a water treatment process, production of secondary pollutants by the cleaning liquid in a membrane cleaning process, secondary treatment of the membrane cleaning liquid, and the like.

Belonging to the technical field of modified polyamide, the invention relates to a glass fiber reinforced, easy dyeing, laser marking, halogen-free, environment-friendly and flame retardant nylon 66 composite material and a preparation method thereof. The composite material comprises the following raw materials by weight: 30-50 parts of nylon 66, 20-40 parts of alkali-free short glass fiber, 15-30 parts of a halogen-free flame retardant, 3-8 parts of a synergistic coloring flame-retardant additive, 0.5-2 parts of a laser marking additive, and 0.5-1.5 parts of other additives, i.e. a compound of a silane coupling agent, an antioxidant and a dispersant. The composite material is mainly used in bearing covers, electrical junction boxes, row plug-in pieces and the like in automobiles, machinery, electrical and electronic appliances and other industries, and can be applied to components and parts with high requirements for environmental protection and safety, flame retardance, laser marking, intensity and color.

The invention discloses a water-based drilling fluid high-temperature-resistant organic/inorganic hybrid polymer filtrate reducer and a preparation method thereof. The preparation method comprises thefolloiwng steps: uniformly mixing three organic monomers including acrylamide, dimethyl diallyl ammonium chloride and N-vinyl pyrrolidone in proportion, adjusting the pH value to 9, transferring themixture into a three-neck flask, adding inorganic monomer modified nano silicon dioxide while introducing nitrogen, performing ultrasonic dispersion for 25 minutes by an ultrasonic dispersion instrument, transferring the mixture into the three-neck flask, heating to 70 DEG C, adding an initiator, reacting for 7 hours under stirring to obtain milk white viscous liquid, cooling, drying, grinding andcrushing to obtain the organic/inorganic hybrid quaternary graft copolymer. In the invention, the four reaction monomers do not contain sulfonation groups, and the filtrate loss reduction effect of the four reaction monomers at 150-210 DEG C is better than that of a common sulfonation type high-temperature-resistant filtrate loss reducer for an oil field, so that the filtrate loss reducer is environment-friendly and has good filtrate loss reduction property, and the temperature resistance can reach 210 DEG C.

The invention discloses a method for counting archenteric flora of aquatic animals and a special primer thereof. The special primer provided by the invention is a primer pair consisting of nucleotide shown in a sequence 1 of a sequence table and nucleotide shown in a sequence 2 of the sequence table. The special primer can be applied to preparation of kit counting the archenteric flora of the aquatic animals or used for carrying out counting of the archenteric flora of the aquatic animals. The special primer and the method can avoid background interference, can make accurate quantification on the number of total flora in a complex micro-ecological environment, and has the characteristics of high sensitivity, stronger specificity and reliability, multiple reaction realization, high automation degree, non pollution, real time, accuracy and the like.

The invention discloses a hydrotalcite/epoxidized natural rubber composite material and a preparation method thereof. The preparation method comprises the following steps: modifying hydrotalcite and dispersing the modified hydrotalcite by using deionized water; adding epoxidized natural rubber latex, continuously and ultrasonically stirring to obtain a hydrotalcite/epoxidized natural rubber composite material at a rubber latex state; and adding vulcanization processing aids, thereby obtaining an ageing-resistant epoxidized natural rubber composite material. The thermo-oxidative ageing resistant epoxidized natural rubber composite material with excellent performance, prepared by the invention, can be used for high-performance tires, medical rubber latex products, rubber tubes, shoe soles and other epoxidized natural rubber products.

A building sealant for house industrialization comprises the following components in parts by weight: 100 parts of silane-modified polyether resin, 30-100 parts of a plasticizer, 80-400 parts of nano calcium carbonate, 0-2 parts of an ultraviolet absorbent, 2-7 parts of a silane coupling agent, 3-8 parts of a silane cross-linking agent, and 1-7 parts of a catalyst. The building sealant of the invention has the following advantages that (1) the building sealant is environment-friendly, has no toxicity, low VOC, good constructability and no bubbling, and has no harm to environment and human body; (2) after curing, the building sealant has good weather resistance, surface paintability, and no pollution; and (3) the building sealant can bear a certain range of deformation, has good displacement resistance, has good bonding property to concrete, and can achieve the effects of no cracking and debonding.

The invention provides a polyolefin masking tape for paint spraying and baking with convenient operation and easy tear, and the masking tape has excellent high-temperature resistance and ultra-soft material, can be used according to pulling line forms of different angles and is beneficial to environmental protection. The upper surface of a glue layer of acrylic is added with a polyolefin copolymer layer, the upper surface of the polyolefin copolymer layer is added with an anti-adhering coating, and anti-adhering processing is carried out on the anti-adhering coating by a non-silicone oil series, and the polyolefin copolymer layer is co-polymerized by ethylene and propylene. The masking tape is characterized by ultra-softness, heat resistance and no pollution and can increase the adherence to the material, being especially suitable for paint spaying and baking in buildings or indoors or paint spraying and baking on pulling lines in automobile industry, and the masking tape accords with environmental protection requirements, has no pollution and has recycling ability.

The invention belongs to the technical field of treatment of water surface blue-green algae, and in particular, relates to a blue-green algae extruding and crushing device. The device comprises a first extruding part and a second extruding part, wherein the contact surfaces of the first extruding part and the second extruding part are formed to an extruding and crushing area; the first extruding part and the second extruding part are respectively provided with magnetic sucking mechanisms on the contact surfaces thereof; and the device further comprises magnetic sucking particles absorbed by the magnetic sucking mechanisms to crush the blue-green algae. The device can effectively realize the purpose of convenient treatment of the blue-green algae so as to provide blue-green algae residues, lower in water content and easier to be treated, to subsequent treatment procedures, and is stable and reliable in operation and higher in treatment efficiency.

The invention provides a food conveying belt comprising a framework, a covering layer and a bonding layer, wherein the covering layer comprises the following components in parts by weight: 80-120 parts of natural rubber, 3-7 parts of zinc oxide, 0.3-0.7 part of sulfur, 2-4 parts of an accelerant, 1-3 parts of an anti-ageing agent, 1-4 parts of stearic acid, 30-40 parts of barium sulfate, 0.8-1.2 parts of paraffin wax and 15-25 parts of white carbon black. The food conveying belt disclosed by the invention has the functions of no toxin, no odor and no pollution.

The invention relates to a shield excavation gap synchronous grouting slurry for a water-rich powdery soil layer, the synchronous grouting slurry is a double-liquid slurry formed by mixing and stirring a liquid A and a liquid B. The liquid A comprises the following concrete components in terms of per cubic meter: 100 to 200 kg of cement; 400 to 600 kg of fly ash; 40 to 80 kg of bentonite; 600 to 800 kg of sand; 20 to 70 kg of lime; 400 to 550 kg of water; 6-9 kg of a water reducing agent; and 10 to 20 kg of KFA (potassium fluosilicate); wherein the solution B is a water glass solution, and the volume ratio of water glass to water is (3-4): 1; the liquid A and the liquid B are mixed and stirred according to the volume ratio of 10: 1. The synchronous grouting slurry disclosed by the invention can be widely applied to a powdery soil layer and is not limited to a pure sandy cobble layer and a pure clay layer, and double slurries can be gelled in an extremely short time, so a reinforcing effect of filling and solidifying is rapidly achieved.

The invention relates to a 2,2,6,6-tetramethyl-4-piperidinamine preparation method, which comprises: adding a raw material 2,2,6,6-tetramethylpiperidone, an amine reactant and a solvent into a reaction kettle, stirring and premixing at 10-50 DEG C to form an imine intermediate, reducing the imine intermediate by using a reducing agent at a certain temperature under a certain pressure, and reactingfor a certain time to finally synthesize the target product 2,2,6,6-tetramethyl-4-piperidinamine compound. According to the invention, 2,2,6,6-tetramethyl-4-carbonyl piperidone reacts with an amine compound to generate an imine intermediate, and a reducing agent is used for replacing catalytic hydrogenation to perform reduction, so the product yield can reach more than 92%, the generation of the2,2,6,6-tetramethylpiperidone hydrogenation byproduct tetramethylpiperidinol is avoided, the hydrogenation process with a high risk coefficient is avoided, and the method is an ideal process for achieving industrialization.

The invention specifically relates to an extraction method for peach gum polysaccharide, belonging to the technical field of extraction of natural active components. The extraction method comprises the following steps: subjecting dried peach gum to impurity removal and crushing and carrying out treatment at 60 to 65 DEG C; then mixing the treated peach gum with distilled water under stirring for extraction; carrying out centrifugation with a high-speed centrifuge so as to obtain a supernatant; subjecting the supernatant to vacuum concentration; then adding liquid nitrogen into a concentrate obtained in the previous step; storing the concentrate at 2 to 3 DEG C and removing a precipitate; adding absolute ethyl alcohol into the concentrate without the precipitate; and subjecting another precipitate obtained in the previous step to vacuum drying and grinding so as to obtain the peach gum polysaccharide. Unlike conventional methods where proteins in peach gum are removed through a Sevage process, the extraction method provided by the invention realizes removal of proteins in the peach gum by adding liquid nitrogen into the concentrate according to a volume ratio of the concentrate to the liquid nitrogen of 10: 1-2, and the removal rate of proteins reaches 99.5%; moreover, the process of removal poses no pollution to the peach gum polysaccharide; and thus, the high-quality peach gum polysaccharide is finally obtained.