How to Bond strength?

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4 results about "Bond strength" patented technology

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In chemistry, bond strength is the degree to which each atom is joined to another in a chemical bond contributes to the valency of this other atom. Bond strength is intimately linked to bond order and can be quantified by: bond energy: requires lengthy calculations, even for the simplest bonds. bond-dissociation energy Another criterion of bond strength is the qualitative relation between bond energies and the overlap of atomic orbitals of the bonds. The more these overlap, the more the bonding electrons are to be found between the nuclei and hence stronger will be the bond. Overlap is necessary for the formation of molecular orbitals. This overlap can be calculated and is called the overlap integral.

Method and device for electrolytic machining of massive array tiny pits through wedge-shaped runner

ActiveCN103600144APrevent inflowConsistent strengthMachining electrodesElectrical-based machining electrodesElectrolysisEngineering

The invention discloses a method and a device for electrolytic machining of massive array tiny pits through a wedge-shaped runner, and belongs to the technical field of electrolytic machining. The method includes processing the surface of a mask plate to enable the surface to fit with the surface of a workpiece anode; fixing a wedge-shaped tool cathode above the mask plate to enable the wedge-shaped runner to be formed between the wedge-shaped tool cathode and the mask plate; connecting the workpiece anode and the wedge-shaped tool cathode with an anode and a cathode of a power source respectively; feeding an electrolyte into the wedge-shaped runner, wherein the electrolyte reaches the surface of the workpiece anode through penetrating group holes in the mask plate; switching on the power source for electrolytic machining. The runner is arranged to be wedge-shaped, so that electric field intensity and electrolyte flowing speed are enabled to be progressively increased along the direction of the runner, both corrosion strength and speed of a workpiece are enabled to tend to be uniform, and uniformity and machining accuracy of electrolytic machining are improved. A PDMS (polydimethylsiloxane) template is taken as the mask plate, bonding strength of the mask plate and the workpiece anode can be guaranteed, stray corrosion, of the electrolyte, to places around a machining area can be effectively reduced, and locality and uniformity of electrolytic machining can be improved.

Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Single-component epoxy structure adhesive for waterproof sealing and preparation method thereof

InactiveCN110564347AHigh strengthHigh bonding strengthNon-macromolecular adhesive additivesMacromolecular adhesive additivesEpoxyHigh humidity

The invention relates to the technical field of epoxy structural adhesives, in particular to a single-component epoxy structural adhesive for waterproof sealing. The single-component epoxy structuraladhesive is prepared from the following raw materials in parts by weight: 100 to 150 parts of epoxy resin, 30 to 90 parts of multifunctional epoxy resin, 50 to 150 parts of a curing agent and 30 to 120 parts of a hydrophobic filling material. The invention further discloses a preparation method of the single-component epoxy structure adhesive for waterproof sealing. The single-component epoxy structure adhesive for waterproof sealing is high in bonding strength, low in water vapor transmittance, excellent in high-temperature and high-humidity resistance, excellent in high-temperature and low-humidity resistance, and is excellent in universality on bonded base materials.

Single-component epoxy structure adhesive for waterproof sealing and preparation method thereof

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Owner:上海汉司实业有限公司

Flame-retardant modified silane polyether adhesive

InactiveCN107974229AHigh bonding strengthImprove flame retardant performanceNon-macromolecular adhesive additivesPolyether adhesivesPolymer sciencePlasticizer

The invention provides a flame-retardant modified silane polyether adhesive. The flame-retardant modified silane polyether adhesive disclosed by the invention is prepared from the following raw materials calculated in parts by weight: 10 to 30 parts of modified silane polyether resin 30000 T, 1 to 5 parts of fumed silica, 1 to 5 parts of a silane coupling agent, 1 to 10 parts of a flame-retardantcomplex additive, 60 to 70 parts of powder, 0.1 to 0.5 part of a light stabilizer, 10 to 20 parts of a plasticizer, 0.1 to 0.3 part of a catalyst, and 0.1 to 0.5 part of an oxidant. The flame-retardant modified silane polyether adhesive disclosed by the invention is high in bond strength, and better in elongation and tensile strength and good in flame retardancy, wherein the bond strength is morethan 1.4 MPa, the elongation is more than 550%, the tensile strength is more than 3.6 MPa, and the flame retardancy can reach the levels V-1 and V-0.

Owner:SUZHOU QIYUE NEW MATERIAL TECH CO LTD

High-strength light bidirectional detachable luminous blade with sterilization function

InactiveCN105364993AAvoid wastingLow costMetal working apparatusRadiationHigh intensityEngineering

The invention discloses a high-strength light bidirectional detachable luminous blade with a sterilization function. The high-strength light bidirectional detachable luminous blade comprises a punch base and is characterized in that screws, nuts, joining pieces and two blade bodies are further included, the two ends of the punch base are each provided with an opening which is concave inwards, each opening is provided with one blade body inside, and the screws penetrate through the rear ends of the blade bodies and the parts, located on the two sides of the openings, of the punch base; moreover, the parts, penetrating out of the punch base, of the screws are locked and fixed by the nuts, the two jointing pieces are welded to the punch base, the free ends of the joining pieces are provided with hooks, two slots are formed in the rear end of one blade body, and the hooks of the joining pieces can stretch into the corresponding slots of the blade body to be connected with the blade body in a matched mode; a plurality of weight reducing grooves are formed in the middle portion of each blade body. The high-strength light bidirectional detachable luminous blade with the sterilization function is low in weight, low in cost, high in bonding strength, capable of being quickly detached, and capable of reducing use cost.

High-strength light bidirectional detachable luminous blade with sterilization function