134results about How to "Good capacity increase" patented technology

The invention discloses a comb-shaped stem grafting copolymer containing reactive group and a preparation method and application thereof. The copolymer is a comb-shaped stem grafting copolymer by taking small molecule monomer B as the main chain, and giant molecule monomer A as the side chain. According to the method, the giant molecule monomer A and the small molecule monomer B are copolymerized to form the comb-shaped stem grafting copolymer of which the main chain is the small molecule monomer B and the side chain is the giant molecule monomer A. The comb-shaped stem grafting copolymer disclosed by the invention can serve as the chain extender of a polymer or a polymer blend, the compatibilizer of the polymer blend, the hydrolytic stabilizer, adhesive and anti-leakage agent of the polymer blend, and is used for coatings of wood, metal or plastic. The reactive group in the copolymer has very high reaction activity, and can react with various end groups of polyamide and polyester. Methacrylate monomers have thermodynamics compatibility with various polymers. The reactive group can react with the end hydroxyl group or the end carboxy group of polyester, so that the comb-shaped stem grafting copolymer can serve as the chain extender, and the processing and application properties of the material are improved.

The invention discloses a reactive group-contained comb-type graft copolymer, and a preparation method and application thereof. A small molecular monomer A and a macromolecular monomer B are copolymerized to form the comb-type graft copolymer with the small molecular monomer A as a main chain and the macromolecular monomer B as a side chain; the weight of the macromolecular monomer B accounts for 0.1-80wt% of the mass of the comb-type graft copolymer; the weight of the small molecular monomer A accounts for 99.9-20wt% of the mass of the comb-type graft copolymer. The reactive group-contained comb-type graft copolymer is the comb-type graft copolymer containing a reactive group on the side chain, and can be used as a compatibilizer and a chain extender.

The invention discloses a toughening modifying method of polyphenylether/nylon 6 alloy. The polyphenylether grafted maleic anhydride is taken as the compatibilizer, which is made by melting grafted method. The mixture of the segmented copolymer of styrene- (ethylene-butylene)-styrene grafted maleic anhydride and the daiamidelastic body is taken as the toughener. The two above are mixed with the polyphenylether and nylon 6 in melting state and the polyphenylether/nylon 6 alloy can be obtained. The notch impact strength of the modified material can reach 1065 J/m, the elongation at break can reach 177 percent, the tensile strength can reach 43 MPa, the bending strength can reach 66.1 MPa and the flexural modulus can reach 1641 MPa.

The invention discloses a preparation method of a dynamic vulcanization thermoplastic polyurethane/polysiloxane elastomer. The preparation method comprises the following steps: firstly premixing thermoplastic polyurethane, methyl vinyl siloxane, a reinforcing filler and a chain extender, then carrying out melt extrusion pelletization inside an internal mixer or a double screw extrusion machine together with a catalyst to prepare a polyorganosiloxane master batch, then uniformly mixing thermoplastic polyurethane, the polyorganosiloxane master batch, a compatilizer and a polymerization inhibitor, and then adding a cross-linking agent and the catalyst for dynamic vulcanization. The methyl vinyl siloxane used for preparing the master batch is relatively low in viscosity and easy for good dispersion, and simultaneously chain growth can also be realized under the effect of the catalyst, and the viscosity and molecular weight of polyorganosiloxane are improved, so that the obtained elastomercan be of preferable mechanical property and sooth hand feeling, is easy for machining, and can be used in the application fields with high requirements such as buildings, automobile spare parts, electric wires and cables, medical apparatus and instruments and wearable equipment.

The invention relates to a thermoplastic vulcanizate having high gas barrier property and a preparation method of the thermoplastic vulcanizate, and belongs to the technical field of high molecular materials. The thermoplastic vulcanizate is prepared by dynamically vulcanizing a rubber-plastic mixture which is composed of nylon blended and grafted with a compatibilizer previously and butyl rubber; the interfacial compatibility between the nylon and the rubber is enhanced, and the thermoplastic vulcanizate is enabled to meet the requirements of a tyre airtight liner material in gas barrier property, mechanical properties, quality, hardness and the like.

The embodiment of the invention discloses a polyethylene glycol terephthalate composite material, comprising the following raw materials in parts by weight: 60-80 parts of polyethylene glycol terephthalate, 10-20 parts of functionalized polyolefin elastomers, 15-30 parts of fibers, 1-5 parts of polyfunctional vinyl monomers and 2-10 parts of composite auxiliaries. The functionalized polyolefin elastomer comprises the block polymer and/or graft polymer of the polyolefin elastomer. The invention also provides a preparation method of the polyethylene glycol terephthalate composite material. The functionalized polyolefin elastomers self adopted by the invention have good compatibility with PET, therefore, the polyethylene glycol terephthalate composite material with high strength and high toughness is prepared by a composite method of enhanced radiation and reactive blending.

The invention relates to a polypropylene composite material with good appearance and a preparation method thereof. The preparation method comprises the following steps: (1) weighing the following components by weight percent: 33%-85.6% of polypropylene, 3-20% of flexibilizer, 1-20% of ternary polymerization thermoplastic elastomer, 10-30% of filling mineral, 0.2-1% of antioxygen, and 0.2-1% of lubricant; (2) putting the raw materials of the step (1) into a high-speed mixer and mixing for 2-5 minutes, and discharging; (3) putting the materials mixed in the step (2) into a twin screw extruder and pelleting through extrusion so as to prepare the polypropylene composite material with good appearance, wherein the rotation speed of the twin screw extruder is 200-400 rpm (revolutions per minute), and the temperature is 180-220 DEG C. Compared with the prior art, the polypropylene composite material has good mechanical property, has no defects such as marks and tiger skin left on the surface, is environment-friendly, and can be widely used in the fields of automobiles, household appliances, sports goods and the like.

The invention relates to an aluminum electrolytic capacitor, in particular to a method for improving specific volume of an aluminum electrode foil by an electrochemical deposition method. In the invention, an Al2O3/TiO2 composite dielectric film is prepared on the surface of the electrode foil by adopting a cathodic electrochemical deposition technology. The preparation process of the composite dielectric film comprises the following steps: taking metallic titanium as an anode, taking an aluminum etched foil as a cathode, and carrying out electro-deposition in an organic solvent-acetone containing halogen-iodine; depositing a titanium-containing compound layer on the surface of the etched foil, and then carrying out heat treatment; and finally carrying out anodic oxidation treatment so asto obtain the aluminum-titanium composite dielectric film with high dielectric constant on the surface of the etched foil. Compared with the traditional dielectric film, the composite dielectric filmon the surface of the aluminum electrode foil obtained by the technological process has higher dielectric constant under the condition of equal thickness so as to more effectively improve the specific capacity of the aluminum electrode foil. The method has the advantages of simple process and lower cost, and is convenient for operation and easy to control.

A preparation method for graft polypropylene polymer by water phase Suspension and Swelling involves: polypropylene powder; graft monomer; water; coated dosage; initiator; and sweller. The process is carried out by: having the temperature of the reactor with uniform mixture of polypropylene powder, water dispersing medium, graft monomer, sweller, coated dosage raised to 80-100deg.C ; stirring it for 1-6 hours after the initiator putted in; then cooling, filtering, washing with clean water and drying. It features: temperate reacting conditions; easily controlling; high rate and high efficiency of grafting; environmental protection. And the polymer is extensive for compatible assistant of high molecular material blend, compound high molecular material for filling, covering material, and printing ink.

The invention discloses polylactic acid/polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol blend. The polylactic acid/polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol blend is composed of 55 wt%-90 wt% of polylactic acid, 5 wt%-40 wt% of polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol, and polylactic acid graft maleic anhydride less than 5 wt%. The invention further provides a preparation method of the polylactic acid/polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol blend. Polylactic acid (PLA)-g-maleic anhydride (MAH) compatibilizer adopted by the polylactic acid/polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol blend is self-made compatibilizer, and in the processing procedure, operation is easy, and cost is low while compatibilizing effect is remarkable. Compared with pure PLA material, compatibility between the PLA and polyethylene terephthalate glycol (PETG) is remarkably improved, elongation at break of products is remarkably increased, but tensile strength and modulus changes are small.

The invention relates to the technical field of textile processing, and discloses a dyeing process for polyester fabric. The unrolled polyester fabric is processed by the steps of S1, presetting greycloth; S2, desizing the grey cloth after presetting; S3, rinsing to neutralize the desized grey cloth; S4, dyeing the grey cloth which is neutralized by rinsing, wherein dyestuff comprises chemical components: by weight, 20-30 parts of disperse dyes, 18-26 parts of wetting agents, 70-90 parts of high temperature levelling agents, 10-15 parts of ethylic acid, 12-16 parts of aminopropyl laurylglutamine, 2-6 parts of trisodium sulfosuccinate and 250-300 parts of water, and dyeing temperature is controlled within 100-130 DEG C; S5, washing; S6, dewatering; S7, scutching; S8, sizing to obtain the dyed polyester fabric. With application of aminopropyl laurylglutamine and trisodium sulfosuccinate, the dye-uptake rate of the polyester fabric is increased.

The invention discloses a polypropylene-based composite material and a preparation method thereof. The polypropylene-based composite material is prepared from the following materials by taking the weight part of polypropylene as 100 parts: 10 to 100 parts of polyamide, 2 to 30 parts of functionalized polypropylene compatilizer, 0.5 to 5 parts of lubricant, 0.5 to 5 parts of plasticizer and 0.01 to1 part of stabilizing agent. The novel functionalized polypropylene compatilizer is added so that mutual mixing of the polypropylene and the polyamide can be promoted very well and the compatibilization effect is remarkable; an original shape of polypropylene powder can be kept through synthesis of the functionalized polypropylene compatilizer and the step of reprocessing and molding a subsequentmaterial is reduced; when the polypropylene-based composite material is blended and extruded, the temperature of each heating section and the rotary speed of a screw rod are regulated and controlled,and the dispersion of the functionalized polypropylene compatilizer in the polypropylene and the polyamide can be promoted to the extremely great extent, so that the compatibilization effect of the functionalized polypropylene compatilizer is displayed very well; a preparation process is simple and convenient and is suitable for large-scale industrial production.

The invention relates to a compatilizer, an application of the compatilizer in a polyphenyleneoxide/nylon alloy and a preparation method of the polyphenyleneoxide/nylon alloy. The compatilizer provided by the invention is boronic acid ester prepared from boronic acid and substances containing hydroxy groups and carboxyl groups, can be directly used for preparing the polyphenyleneoxide/nylon alloy, and also can be subjected to melt extrusion with polyphenyleneoxide to be prepared into a polyphenyleneoxide blending compatibilization system which is used for preparing the polyphenyleneoxide/nylon alloy. The preparation method of the polyphenyleneoxide/nylon alloy is implemented as follows: drying and evenly stirring the compatilizer or the polyphenyleneoxide blending compatibilization system, polyphenyleneoxide and nylon; and feeding the mixture in a double screw extruder for extrusion to obtain the compatibilization modified polyphenyleneoxide/nylon alloy, wherein the screw temperature is 170-295 DEG C and the screw revolving speed is 70-120 revolutions/minute. The invention has the advantages of being convenient in processing, having simple process, notable compatibilization effect, remarkably improved tensile property and bending property, favorable and stable comprehensive property and wide industrial application prospect, and satisfying strength requirements of common applications.

The invention discloses a wood-plastic composite material and a preparation method thereof. The wood-plastic composite material comprises the following raw materials in part by weight: 30 to 50 percent of saw dust, 30 to 50 percent of waste polyethylene, 5 to 20 percent of waste polypropylene, 5 to 10 percent of aluminate, 0.5 to 1 percent of modifier, 4 to 5 percent of stearic acid, 0.5 to 1 percent of zinc stearate and 4 to 5 percent of ethylene wax. The preparation method comprises: weighing raw material; drying the saw dust; mixing, filling the waste polyethylene and waste polypropylene in an open mill, adding the modifier, stearic acid, zinc stearate and ethylene wax, plasticizing and sheeting to obtain a plasticized blank; and shearing the plasticized blank into small thin sheets, subjecting the small thin sheets to hot-forming, preparing a standard sample, removing flashing, and performing secondary hot-forming to obtain wood-plastic composite material. The wood-plastic composite material has high compatibility, interface compatibility and good mechanical properties and brings great convenience for production and life.

The invention discloses a rubber-blended macromolecular compatibilizer, a preparation method and an application thereof. The rubber-blended macromolecular compatibilizer is a macromolecular compatibilizer FKM-g-(SiR)n acquired by taking fluororubber as a main chain and grafting with long-chain vinyl silicone oil through a high-temperature thermodynamic grafting process. The rubber-blended macromolecular compatibilizer disclosed by the invention can be used as the compatibilizer for blending fluororubber and silicone rubber, has a compatibilization effect on the blending of fluororubber and silicone rubber, and can be used for preparing vulcanized products with excellent physical and mechanical properties and oil resistance.

The invention provides a macromolecular compatilizer for ABS (acrylonitrile-butadiene-styrene)-HIPS (high impact polystyrene) alloys and a preparation method of the macromolecular compatilizer. The compatilizer comprises components in percentage by weight as follows: styrene monomers, glycidyl acrylate monomers, a free radical initiator and SAM (styrene-maleic anhydride-acrylonitrile). The preparation method comprises steps as follows: the styrene monomers, the glycidyl acrylate monomers and the free radical initiator react with a polymerization method, and a copolymer is obtained; the copolymer is uniformly mixed with SAM, and the macromolecular compatilizer for the ABS-HIPS alloys is obtained with a melt blending method. The macromolecular compatilizer has the benefits as follows: the amphipathic macromolecular compatilizer is obtained through one-step reaction and melt blending, a preparation process is simple, the proportion of polystyrene chain segments to SAM chain segments in the compatilizer is better adjusted, and the macromolecular compatilizer is suitable for blending systems of ABS and HIPS in various proportions. Experiment results show that the compatilizer has a remarkable compatibilization effect.

The invention relates to an emulsifier suitable for glufosinate ammonium.fluoroglycofen-ethyl microemulsion. The emulsifier is prepared from the following raw materials in percentage by mass: 1-70% ofstyrylphenol polyoxyethylene ether, 1-70% of modified alkyl glycoside, 1-70% of alkylphenol polyoxyethylene ether polyoxypropylene ether and 1-70% of of dodecyl hydroxysulfobetaine. The emulsifier prepared by the invention has good emulsifying function and compatibilizing effect. The invention also discloses an application method of the emulsifier suitable for glufosinate ammonium.fluoroglycofen-ethyl microemulsion, wherein the emulsifier is suitable for preparing a microemulsion product with glufosinate-ammonium mass percent of 5-20% and fluoroglycofen-ethyl mass percent of 0.1-1%, so that the glufosinate ammonium.fluoroglycofen-ethyl microemulsion is stable in quality, simple in process, convenient to operate and high in production efficiency.

The invention discloses a low yellowness styrene-acrylonitrile-maleic anhydride copolymer and a preparation method thereof. The copolymer comprises the following components: 35-80 parts of styrene, 10-30 parts of acrylonitrile, 1-30 parts of maleic anhydride, and 1-20 parts of a fourth monomer. The bulk polymerization process is employed for production, and solves the problems of too yellow appearance, affected product appearance and the like in styrene-acrylonitrile-maleic anhydride copolymers produced by previous technologies. According to the invention, an oil-soluble initiator is employedto produce free radicals, and reaction is carried out under a low temperature condition so as to obtain the low yellowness terpolymer with low molecular weight distribution coefficient, the terpolymeris suitable for use as a compatibilizer of plastic alloys (PC/ABS, ABS/PET, PA/ABS, etc.), and does not affect the appearance of downstream modified products.