423results about How to "Increased mechanical toughness" patented technology

The invention discloses an all-solid-state carbonate ion selective electrode and a manufacture method of the all-solid-state carbonate ion selective electrode. The all-solid-state carbonate ion selective electrode comprises a metal wire, solid electrolyte, a carbonate ion sensitive film and a heat shrinking tube. The solid electrolyte is covered on the metal wire; the carbonate ion sensitive filmis covered on the solid electrolyte layer; and the heat shrinking tube is covered on the part of the metal wire, where is not covered with the carbonate ion sensitive film. The invention also discloses a manufacture method and a calibration method of the all-solid-state carbonate ion selective electrode; the solid electrolyte and the carbonate ion sensitive film are coated on the surface of the metal wire in layers by a coating method; and the concentration of the carbonate ions in the solution can be detected fast and accurately by pairing the selective electrode and an external reference electrode. The exploring electrode provided by the invention has quite high mechanical strength and toughness, has the characteristics of small volume, convenience in carrying and operation, fast response and low manufacture cost, and is suitable for online detecting and long term monitoring the contents of carbonate ions in natural water, chemical and chemical industrial water mediums.

The invention discloses a thermoplastic konjac glucomannan/graphene oxide compound material and a preparation method thereof. The invention is characterized in that the compound material comprises the following components according to parts by weight: 1 to 99 parts of thermoplastic konjac glucomannan, 0.001 to 2 parts of graphene oxide, 0 to 10 parts of cross-linking agent and 0 to 10 parts of plasticizing agent; and the preparation method comprises the following steps of: proportioning; adding the thermoplastic konjac glucomannan into an ethanol or water solution of the graphene oxide, stirring for 5 to 10 hours, filtering and drying solid substances; then, drying after stirring and mixing with the cross-linking agent and the plasticizing agent in a mixing machine evenly; and afterwards, placing into a double-screw extrusion machine, extruding after carrying out melt blending at the temperature of 100 to 140 DEG C for 5 to 15 minutes, and granulating so as to prepare the compound material. The compound material has favorable processing performance, has excellent adsorbability, thermal stability and mechanical toughness, can be biologically degraded, can be regenerated, has no pollution to the environment and can be widely applied to the fields of chemical engineering, medicine, environmental protection, capital construction and the like.

The present invention relates to one kind of environment responding aquogel copolymer and its preparation process. The aquogel consists of: N-isopropyl acrylamide 10-90 wt% and methacrylate dextran derivative 10-90 wt%. The preparation process of the environment responding aquogel copolymer includes chemical modification of dextran with GMA to synthesize methacrylate dextran derivative, MA-Dex, with reaction activity; and subsequent copolymerization of MA-Dex and NIPA to obtain the said environment responding aquogel copolymer P(NIPA-co-MA-Dex). The aquogel copolymer has high temperature sensitivity and quick responding speed as well as high strength and excellent biocompatibility. The preparation process is simple, needs no special apparatus and is easy to realize in industry.

The invention relates to a copper/graphite compound material and a preparation method thereof. In the compound material, carbon graphite is used as a substrate material, and a tin bronze alloy is used as a dipping metal. The preparation method comprises the following steps: (1) melting the tin bronze alloy to meltwater in a heat treatment furnace, immersing carbon graphite material blocks, and cooling so as to form a copper clad wrap coated by the graphite material blocks; (2) putting the copper clad wrap obtained in the step (1) in a hot isostatic press for hot isostatic press dipping at the temperature of 1100-1300 DEG C under the pressure of 60-80MPa at the atmosphere of argon, carrying out thermal insulation and pressure preservation for 60-120 minutes, and then carrying out belt pressure cooling; and (3) taking out the copper clad wrap obtained in the step (2) and then dissecting the copper clad wrap by using a machining method. The copper/graphite compound material is applied to machinery motive seal or bearings with high parameters (the temperature changes between minus 253 to 350 DEG C and the rotate speed is over 10000 rpm).

The invention discloses high-content fiberglass-reinforced halogen-free flame-retardant PC (polycarbonate) composite and a preparation method thereof, comprising the following components according to percent by weight: 50-60% of polycarbonate, 34-45% of fiberglass, 2-5% of a toughener, 8-20% of a flame retardant, 1-3% of a flame-retardant synergist, 0.1-1% of a lubricant, and 0.1-1% of an antioxidant; the polycarbonate is a mixture of common polycarbonate and siloxane copolymer. The polymer is formed of PC (polycarbonate) and siloxane, PC is amorphous resin with good performance, and the siloxane copolymer has the advantages of low temperature resistance, chemical corrosion resistance, good dielectric property and the like; the siloxane-PC copolymer has the advantages of both the siloxane copolymer and PC and has reduced stress cracking performance and gap sensitivity, improved low temperature impact performance, and improved weathering resistance.

The invention relates to a preparation process of repairing materials for tissues and organs, in particular to a preparation process of repairing material for tissues and complex organs. It makes PHBHHx as main materials to prepare film type, single tube, multiple tubes and net tube materials. It uses PLLA, PLGA, PCL, PU, other degradable high molecular materials, drug, growth factor, cell and other components to prepare a material for repairing tissues and organs with favorable anticoagulant property, biological compatibility, comparative highly machinery intensity and toughness, and matching degradation rate with the growth rate of the complex organs.

This invention relates to one nanometer carbon silicon to alumina compound ceramics materials for base slice element surface fuse and its process method, wherein, the nanometer carbon silicon to alumina ceramics base slice surface fuse comprises metal fuse wire, insulation layer, sealing layer and metal terminal; the invention is characterized by the following: the said ceramics base slice is made from nanometer alumina for 70 to 97 percent mole and nanometer carbon silicon for 1 to 30 percent moles.

The invention provides a preparation method of an optical-actuated composite film. The preparation method comprises the following steps that graphite oxide and an optical-actuated heating material are dispersed into a first solvent, and a first colloid is obtained; an organic flexible strained-layer material is dispersed into a second solvent, and a second colloid is obtained; the first colloid is coated on a substrate and dried, and an optical-actuated heating film layer is obtained; and the second colloid is coated on the optical-actuated heating film layer and dried, a strain film layer is formed, the strain film layer is bonded with the optical-actuated heating film layer through chemical bonds, the optical-actuated composite film is formed, and then demolding is conducted on the optical-actuated composite film and the substrate. The invention further provides the optical-actuated composite film prepared through the method. The optical-actuated composite film is composed of the optical-actuated heating film layer and the strain film layer, the optical-actuated heating film layer comprises graphite oxide and the optical-actuated heating material, the strain film layer comprises the organic flexible strained-layer material, and graphite oxide and the organic flexible strained-layer material are combined through the chemical bonds. The invention further provides an optical actuator.

The invention discloses novel environment-friendly waterborne inorganic paint and a preparation method thereof. The novel environment-friendly waterborne inorganic paint is prepared from, by weight, 55-65 parts of kaolin, 12-20 parts of sodium silicate, 20-30 parts of titanium dioxide, 1-5 parts of nano zinc oxide, 5-10 parts of ultrafine wollastonite powder, 1-10 parts of nano calcium carbonate, 1-5 parts of ultrafine white mica powder, 7-15 parts of polyvinyl alcohol, 1-4 parts of ultrafine molybdenum disulfide powder, 2-10 parts of nano silicon dioxide, 2-12 parts of nano magnesium oxide, 2-12 parts of nano aluminum oxide, 1-3 parts of magnesium chloride, 1-3 parts of a sodium silicate hardening accelerator, 2-5 parts of a pH value regulating agent, 1-8 parts of a waterproof agent, 6-10 parts of an antifoaming leveling agent, 1-3 parts of a thickening anti-settling agent and 280-310 parts of water. The novel environment-friendly waterborne inorganic paint which is environment-friendly waterborne inorganic paint for buildings is high in storage stability, excellent in water resistance and alkali resistance, strong in adhesion, high in fire resistance, high in strength and hardness, resistant to scratching and contamination, excellent in corrosion resistance and antibacterial property, free of formaldehyde, benzene compounds, VOC (volatile organic compounds) and heavy metal elements, completely environmental friendly and nontoxic, suitable for industrial production, easy for painting and convenient and quick in construction.

The invention provides a padding resin compound of a filling type height-adjustment pad, which is characterized in that the prescription of the compound includes a main material, a firming agent and an accelerant; the prescription of the main material includes the following components counted in weight portions: 100 portions of epoxide resin, modified epoxide resin or epoxy modified vinylit resin, 0 to 100 portions of padding, 0 to 100 portions of reactive diluents, 0 to 50 portions of tougheners, 0 to 1 portion of foam killer and 0 to 5 portions of resin acceptors; besides, the weight ratio of the main material, the firming agent and the accelerant is 100: 0.5 to 100 : 0 to 10. The compound has the advantages of low viscosity, excellent operation technique as well as excellent mechanical intensity and toughness; the compound is a better filling material for the filling height-adjustment pad of the existing railway plate unballasted tracks; besides, the preparation method of the compound is simply operated and is easy for industrialization.

The invention discloses an anti-interference metal/metal oxide pH electrode and the preparing method, adopting metal wire with stable chemical properties as substrate, immersing the metal wire in the melted sodium peroxide for several minutes and forming hydrogen ion-sensitive active oxide film on the surface of the metal wire, then using fluorinated sulfonic acid resin to coat the active oxide film and forming hydrogen ion selective semipermeable membrane, which can transmit protons but stop other anions and cations outside, thus avoiding their interferences to pH electrode and simultaneously largely prolonging pH electrode service life. And the pH electrode has advantages of small bulk, high mechanical strength, and wide application range, etc, and the preparing method has simple process and low cost. And it has application values in the fields, such as chemical synthesis, dynamic monitoring of various power stations and waste management.