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129results about How to "Good bonding performance" patented technology

Addition type organic silicon rubber tackifier, preparation method and application thereof

The invention discloses addition type organic silicon rubber tackifier capable of improving adhesion between addition type organic silicon rubber and base materials after the addition type organic silicon rubber is cured at moderate temperature, and a preparation method and application of the addition type organic silicon rubber tackifier. The tackifier is prepared through vinyl hydroxyl silicone oil, glycidyl ether alkoxy silane and titanate catalysts. The preparation method includes the following steps that the vinyl hydroxyl silicone oil and glycidyl ether alkoxy silane are mixed evenly at room temperature, added with phthalic ester in a stirring state and heated to 60-100 DEG C, and reacts for 1-6 hours, and the reaction mixture is obtained; the mixture is decompressed at 60-80 DEG C to remove low-boiling-point substances, keeps in a vacuum state, and is cooled to the room temperature, and the tackifier is obtained; the addition type organic silicon rubber tackifier is matched with auxiliaries to be applied to addition type silicon rubber. The tackifier is added into addition type organic silicon rubber so that the silicon rubber can have good adhesion with base materials especially polycarbonate after the silicon rubber is cured at moderate temperature.
Owner:MIANYANG WELLS ELECTRONICS MATERIAIS

Water-based aluminium foil adhesive for cigarette packing and preparation method thereof

The invention discloses a water-based aluminium foil adhesive for cigarette packing and a preparation method thereof and belongs to the field of adhesive preparation. The adhesive is composed of water-based acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, a polyvinyl alcohol solution, water-based additives and deionized water. The adhesive has the advantages that both the economy of the vinyl acetate-ethylene emulsion and the excellent adhesive property of the water-based acrylic emulsion are provided, so that the peel strength is high in and the risk that aluminium foil paper products are delaminated is avoided; meanwhile, the copolymerization is carried out by adopting soft monomer based acrylic monomers, so that the initial adhesive force is good; acrylic acid functional monomers are adopted, so that the emulsion stability is enhanced and the final peel strength of the emulsion is greatly increased; the water-based acrylic emulsion is introduced, so that the water resistance is obviously increased, the freezing resistance is better than that of general vinyl acetate-ethylene copolymer emulsion and the use cost is much lower than that of general water-based acrylic emulsion; and residual vinyl acetate monomers and formaldehyde are removed through vacuumizing, so that the requirements of water-based adhesives for the cigarette packing are completely satisfied.
Owner:NANTONG GAOMENG NEW MATERIAL

Isocyanate modified two-component silicon rubber adhesive and preparation method thereof

The invention discloses an isocyanate modified two-component silicon rubber adhesive and a preparation method thereof. The adhesive comprises a component A and a component B which are prepared at the vacuum degree of more than -0.09MPa and the temperature of between 4 and 30 DEG C. A method for preparing the component A comprises the following steps of: (1) adding 100 weight parts of alpha, omega-dihydroxy polydimethylsiloxane, 0 to 500 weight parts of solid filler and 0 to 20 weight parts of pigment into a stirring kettle and fully stirring; (2) adding 0 to 5 weight parts of water and fully stirring; and (3) adding 0 to 50 weight parts of fumed silica in batches. A method for preparing the component B comprises the following steps of: (1) preparing an isocyanate modified silane coupling agent; (2) adding 10 to 50 weight parts of methyl silicone oil, 2 to 20 weight parts of cross-linking agent and 0 to 35 weight parts of solid filler which is dried and dehydrated at a high temperatureinto a reaction kettle and fully stirring; (3) adding 0 to 10 weight parts of silane coupling agent, 10 to 40 weight parts of isocyanate modified silane coupling agent and 0 to 3 weight parts of catalyst and fully stirring; and (4) adding 0 to 10 weight parts of fumed silica in batches and fully stirring.
Owner:TONSAN ADHESIVES INC

Molded metal-organic framework material and molding method thereof

The invention discloses a molded metal-organic framework material and a molding method thereof. The molding method comprises the following steps: preparing a binder solution with a proper concentration to allow the binder solution to minimally block holes in a metal-organic framework material while maintaining good bonding performance; then uniformly mixing the binder solution with a suspension of the metal-organic framework material; placing a substrate membrane in the mixed solution obtained in the previous step to allow the surface of the substrate membrane to be uniformly adhered by a layer of the metal-organic framework material; and then soaking the substrate membrane uniformly adhered by the metal-organic framework material in an organic solvent to allow water molecules in the pore channels of the metal-organic framework material to be displaced out so as to reinforce the strength of the metal-organic framework material adhered on a substrate, wherein the molded metal-organic framework material with a large specific surface area and high mechanical strength is eventually obtained. Thus, the molding method provided by the invention overcomes the technical problems of complex molding process, a long molding period, severe conditions, high cost, severe loss of specific surface areas and the like in the prior art.
Owner:HUAZHONG UNIV OF SCI & TECH

Anchoring method applicable to large-tonnage FRP inhaul cable

The invention discloses an anchoring method applicable to a large-tonnage (larger than 50 tones) FRP inhaul cable. The FRP inhaul cable is anchored with a clamping piece type anchorage device, a protection transition layer with the length no smaller than the length of an anchoring area of the clamping piece type anchorage device is formed at the anchoring end of the FRP inhaul cable, the protection transition layer and the FRP inhaul cable are integrated, and the clamping piece type anchorage device is anchored to the protection transition layer. After the FRP inhaul cable and the protecting layer are pressed into a whole, while the shearing strength of the FRP inhaul cable and a protecting layer interface is increased, the phenomenon that the FRP inhaul cable weak in transverse strength makes direct contact with load transmitting mediums large in rigidity in the anchoring area can be avoided, a stressed buffering layer is formed, and the FRP inhaul cable can be indirectly protected. The anchoring method used for anchoring the FRP inhaul cable has the advantages of facilitating construction and being high in anchoring efficiency and the like, long-term performance of an anchoring system can be guaranteed, the method can also be used for tensile tests on the FRP inhaul cable, samples can be prepared easily and conveniently, and compared with an adhesive type anchoring method, test errors caused by overlarge shearing deformation of resin can be avoided.
Owner:SOUTHEAST UNIV +1

High-elasticity-recovery-rate silicone elastic sealant for hollow glass and preparation method of silicone elastic sealant

The invention discloses a high-elasticity-recovery-rate silicone elastic sealant for hollow glass and a preparation method of the silicone elastic sealant. The silicone elastic sealant is mainly used for secondary sealing of the hollow glass. The silicone elastic sealant is characterized by containing a component A and a component B, wherein the mass ratio of A to B is (15-18):1. The preparation process comprises the following steps that alpha,omega-dyhydroxyl polydimethylsiloxane, inorganic filler and dimethicone are stirred to be uniform in a high-speed planetary stirring mechanism, and the component A is obtained; the component B is prepared from dimethicone, inorganic filler, an organosilicone cross-linking agent, a silane coupling agent, dibutyltin dilaurate and a titanium complex. In the using process, the component A and the component B are mixed to be uniform at room temperature according to the mass ratio. The silicone elastic sealant has good strength, elasticity and adhesion and excellent aging resistance, the elasticity recovery rate of the silicone elastic sealant is as high as 96%, and the service life of the hollow glass sealant can be greatly prolonged.
Owner:GUANGZHOU JOINTAS CHEM

Acrylate hot melt adhesive composition and preparation method of hot melt adhesive by UV (ultraviolet) crosslinking

The invention belongs to the technical field of a hot melt adhesive, and particularly relates to an acrylate hot melt adhesive composition and a preparation method of a hot melt adhesive by UV (ultraviolet) crosslinking. The composition of the acrylate hot melt adhesives comprises the following components based on weight content ratio: 9-90% of acrylate copolymer, 9-90% of copolyester and 0.1-1% of antioxidant. The preparation method of the hot melt adhesive by UV crosslinking comprises the following specific steps of: polymerizing at least one of acrylate monomer bodies; and adding the composition into a double-screw extruder to carry out high-speed mixing, in-situ grafting, compatibilization and chain extension, coating a base material by means of hot melting at the temperature of 130-160 DEG C, carrying out ultraviolet light crosslinking, and packing in a rolling way. The preparation method has the benefit effects that part of hot melt adhesive is crosslinked by means of UV crosslinking, so that the cohesive strength of the hot melt adhesive can be improved, and the glue-overflowing performance can be resistant, and the joint strength can be improved. Meanwhile, the hot melt adhesive provided by the invention is further added with copolyester with equivalent quantity besides the main body resin, and the higher wettability, cohesive strength and heat resistance, and good weather fastness can be obtained due to the introduction of the copolyester.
Owner:中新联科环境科技(安徽)有限公司
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