7 results about "Rubber toughening" patented technology

This invention discloses a construction method for a thin-layer rubber-reinforced structure for a tunnel invert arch, comprising the following steps: Step 1, spraying concrete onto the initial support of the invert arch and leveling it to form a cement mortar leveling layer; Step 2, laying multiple rings of rubber-reinforced layers sequentially along the tunnel direction from the end onto the cement mortar leveling layer to form a rubber-reinforced layer structure. Each ring of the rubber-reinforced layer includes multiple polyurethane foam boards connected sequentially in the ring direction. A rectangular hole is formed in the center of each polyurethane foam board, and a rubber vibration damping pad is nested within each rectangular hole; Step 3, laying a waterproof sheet on top of the rubber-reinforced layer structure from Step 2; Step 4, pouring invert arch concrete onto the waterproof sheet. This method utilizes a rubber-reinforced layer structure, integrating vibration damping and load-bearing functions, which can absorb a large amount of energy from seismic dynamic loads and reduce the risk of structural resonance.

The present application belongs to the technical field of anticorrosive paint, and particularly relates to an epoxy bacteriostatic anticorrosive paint and a preparation method thereof. The composition comprises the following components: bisphenol A type liquid epoxy resin, epoxy-terminated polysiloxane, core-shell rubber toughening agent, glass flake, surface-modified nano-silicon dioxide, gamma-glycidyl ether oxypropyl trimethoxysilane, reactive silane quaternary ammonium salt, latent imidazole curing agent, dispersant, defoaming agent, leveling agent and organic solvent. The present application forms a functionally graded structure with a surface layer rich in silicon for bacteriostasis and an epoxy anticorrosive bottom through multi-component synergistic design and step-by-step dispersion process; the glass flake and modified nano-silicon dioxide synergistically improve the barrier density, the core-shell rubber toughening agent enhances the film layer crack toughness, the reactive silane quaternary ammonium salt realizes long-term bacteriostasis without damaging the film layer structure, and the latent imidazole curing agent ensures the storage stability of the system.

The present invention is directed to an electrically conductive composition comprising: a) a resin component comprising: 1) a first epoxy resin; and, 2) a second epoxy resin and / or a functionalised polybutadiene resin and / or a functionalised butadiene-acrylonitrile copolymer; b) a curative for epoxy resin; c) an electrically conductive filler; d) a one core shell rubber toughener; and, e) a reactive diluent component comprising 1) a monofunctional epoxy diluent and / or 2) a polyfunctional epoxy diluent; wherein said composition further comprises a curing agent if said functionalised polybutadiene resin is present in said resin component.

This invention discloses a resin matrix composition and preparation method for an insulated boom of an aerial work platform. The raw materials of the resin matrix composition, by weight, include the following components in parts by weight: 100 parts epoxy resin matrix, 75-85 parts curing agent, 5-10 parts island-type rubber toughening agent, 1-5 parts surface-modified nano-silica, 0.1-1.0 parts accelerator, and 0.1-0.5 parts defoamer. The island-type rubber toughening agent is a pre-reacted or physically blended epoxy resin containing a rubber phase, which can precipitate spherical rubber particles with a diameter of 0.1-2.0 μm during the curing process, forming a typical island two-phase structure. The surface-modified nano-silica is fumed silica that has been surface-treated with a silane coupling agent. This invention utilizes a combination of island-type rubber toughening agent and nano-silica particles to construct a "soft-hard synergistic" microstructure, which significantly improves the impact toughness and crack resistance of epoxy resin matrix while maintaining high mechanical modulus and enhancing high-voltage electrical insulation performance.

The application provides a kind of polybutyl acrylate and preparation method and ASA resin.The preparation method of polybutyl acrylate includes the following steps: S1: butyl acrylate, RAFT reagent, emulsifier, optional electrolyte and water are mixed, then initiator, reducing agent is added to react, PBA seed emulsion is obtained;S2: butyl acrylate, RAFT reagent, emulsifier, initiator and water are mixed into pre-emulsion;S3: reducing agent, pre-emulsion is added to PBA seed emulsion to react, polybutyl acrylate is prepared.The polybutyl acrylate prepared by the application has high molecular weight, narrow molecular weight distribution, high branching degree, good rubber toughening effect, and can prepare super high impact ASA resin with less amount of glue powder, impact strength greater than 400J / m, and excellent weather resistance, dE less than 15 after 500h of ultraviolet aging test.

This invention relates to cyanoacrylate-containing compositions that include (a) a beta-alkoxy cyanoacrylate component, (b) a cyanoacrylate component selected from the group consisting of 2-methylbutyl cyanoacrylate, isoamyl cyanoacrylate, 2-ethylhexyl cyanoacrylate, 2-pentyl cyanoacrylate, 3-methylpentyl cyanoacrylate, 2-ethylbutyl cyanoacrylate, 3, 7-dimethyloctyl cyanoacrylate, and combinations thereof; and (c) a rubber toughening component. Cured products of the inventive cyanoacrylate compositions demonstrate improved toughness without an odor typically found with cyanoacrylate-containing compositions.

This invention belongs to the field of epoxy resin technology, specifically relating to a low-viscosity, high-heat-resistant, toughened epoxy resin composition and its preparation method. The composition comprises, by weight, 100 parts of phenolic resin A, 5-15 parts of core-shell rubber toughening agent B, 35-43 parts of aromatic diamine curing agent C, 1-5 parts of bifunctional epoxy reactive diluent D, 0.5-2 parts of silane coupling agent E, and 0.1-1 parts of basic imidazole curing accelerator F. The preparation method includes: preheating resin A and then dispersing it with core-shell rubber toughening agent B under high-speed shear; after cooling, adding curing agent C, diluent D, silane coupling agent E, and accelerator F sequentially and stirring until homogeneous; after vacuum degassing, pouring the mixture into a mold; and obtaining the cured product through a segmented curing process of initial curing at 125-160℃ and subsequent curing at 180-190℃. This achieves an excellent combination of low viscosity processability and high heat resistance, making it suitable for the preparation of high-performance composite materials.