139results about How to "Strong initial adhesion" patented technology

The invention discloses an ultraviolet curing pressure sensitive adhersive for the polyethylene protective film and a preparation method thereof. The ultraviolet curing pressure sensitive adhersive comprises the following components by weight percent: 30-80% of acrylate prepolymer, 0.03-4.5% of photoinitiator, 0.2-2.5% of photocuring crosslinking agent, 3-25% of tackifier and 5-40% of solvent. Theultraviolet curing pressure sensitive adhersive disclosed in the invention has good adhesive force to the polyethylene film and can realize good balance among initital adhesive force, peeling strength and cohesive force.

The invention discloses a solvent-based reticulated pressure-sensitive adhesive for a polyethylene protective film and a preparation method thereof. The solvent-based reticulated pressure-sensitive adhesive comprises the following components in parts by weight: 42-45 parts of acrylate pressure-sensitive adhesive, 0.3-0.5 part of curing agent, 0.1-0.2 part of catalyst and 54-57% of solvent. The solvent-based reticulated pressure-sensitive adhesive disclosed by the invention has good adhesion to a polyethylene protective film and can realize good balance among Initial adhesion, peel strength and cohesion.

The invention discloses an aqueous neoprene type environment-friendly glue which comprises aqueous rosin emulsion with low grain diameter and high stability, aqueous acrylic resin emulsion, ethane-vinyl acetate emulsion, anion type neoprene latex, aqueous foam suppressor, wetting dispersant, preservative, tackifier, nanometer calcium carbonate concentrated slurry, aerosol, and the like. The invention also discloses a preparation method of the aqueous neoprene type environment-friendly glue; the aqueous neoprene type environment-friendly glue takes water as a dispersed media, is uniform milky liquid, has the comprehensive advantages of no organic solvent, no heavy metal, insipidity, good initial adhesive force, excellent bond strength, excellent hold tack, excellent heat resistance and aging resistance, short drying time, long opening time, large spray area of unit weight, glue saving, excellent oily leather resistance, fireproofing, safe transportation, and the like, has the advantages of reducing environment pollution, improving operation and construction environment, saving large amounts of organic fuel, insipidity, and the like, is widely applied to industries of soft furniture of cases and bags, sofas, swivel chairs, mattresses, pillows, folding screens, and the like, and is especially suitable for application of green high-grade export products of occident.

The invention discloses a solvent-free bi-component polyurethane adhesive with high initial viscosity. The adhesive comprises a component A and a component B, wherein the component A is a blocked isocyanate group compound, the component B is a polyhydroxy compound, and the component A and the component B are mixed according to the molar ratio of NCO:OH of 1.1-1.5 so as to obtain the solvent-free polyurethane adhesive with high initial viscosity. The component A, namely the blocked isocyanate group compound, is formed by reaction of polyisocyanate and the polyhydroxy compound. The component B, namely the polyhydroxy compound, is composed of polyether polyol, or composed of polyether polyol and vegetable oil polyol, or composed of polyether polyol, vegetable oil polyol and tackifying resin. The viscosity of the solvent-free compound adhesive is reduced, and certain initial viscosity can be ensured. Particularly, good initial viscosity can be achieved by only applying a thin adhesive layer.

The invention discloses an aqueous polyurethane adhesive and a preparation method thereof. The aqueous polyurethane adhesive comprises, by weight, 100 parts of polyester polyol, 30 parts of isocyanate, 7-8 parts of auxiliary agent and the balance of deionized water. The preparation method comprises steps of: dehydrating polyester polyol, adding isocyanate, dimethylolpropionic acid, trimethylol propane and N-methyl pyrrolidone and adding dropwise a catalyst to obtain a performed polymer; then adding acetone and triethylamine for neutralization into salt; dispersing the mixture into deionized water with high speed shearing and carrying out emulsification; adding ethene diamine for chain extension and steaming out acetone with reduced pressure. The method of the invention has a simple technology, is practical and employs self-made aromatic polyurethane polyol; an R value, namely a value of NCO / OH is controlled at 1.4, and an addition of the DMPA is 3.5%; and the prepared aqueous polyurethane adhesive has strong Initial adhesion and good stability.

The invention relates to a low viscosity UV/moisture dual-curing polyurethane hot melt adhesive and a preparation method thereof, belonging to the technical field of photocuring adhesives. The low viscosity UV/moisture dual-curing polyurethane hot melt adhesive comprises the following components in parts by weight: 95-97 parts of UV/moisture dual-curing polyester polyether polyurethane, 1-3 partsof free radical photoinitiator, 0.25-2 parts of cationic photoinitiator, 0.25-1 part of photosensitizer, 0.06-0.35 part of polyurethane catalyst, 0.01-0.02 part of water reducing agent, and 0.05-0.2 part of antioxidant. The hot melt adhesive can be used for the bonding of opaque substrates. The viscosity of the adhesive at the sizing temperature 110 DEG C is in the range of 2000-2500 mPa.s, the viscosity is low, the construction is convenient, the initial viscosity is strong, the positioning is fast, the holding time is shortened, even the holding pressure is not needed. The hot melt adhesivedoes not contain small molecular active diluent and is environmentally friendly. The preparation process is simple, easy to operate and suitable for industrial production.

The invention discloses a thinly-coated high-viscosity pressure-sensitive adhesive. The thinly-coated high-viscosity pressure-sensitive adhesive comprises the following components by weight: 100 partsof acrylate resin slurry, 0.1-3 parts of a curing agent and 15-50 parts of tackifying resin, wherein the acrylate resin slurry has a weight-average molecular weight of (30-200)*10<4> g/mol and a molecular weight distribution index PDI of 2.0 to 8.0; and the tackifying resin has a softening point of 10 DEG C to 140 DEG C and relative molecular mass of 300 g/mol to 2000 g/mol. On the basis of 100 parts of acrylate resin slurry, the tackifying resin comprises 10-25 parts of rosin resin and 5-25 parts of terpene resin. The pressure-sensitive adhesive has excellent initial adhesion and excellent stripping force, and good fluidity; and a prepared pressure-sensitive adhesive tape is thin in thickness and high in nanocrystalline bonding strength.

The invention discloses a hyperbranched polyester hot-melt-type polyurethane adhesive for weaving and a preparation method thereof. The hyperbranched polyester hot-melt-type polyurethane adhesive comprises polyether polyol, hyperbranched polyester polyol, MDI and an additive. The preparation method comprises preheating hyperbranched polyester polyol at 100-150 DEG C until melting to obtain hyperbranched polyester polyol pre-melt, checking the hermeticity of a reactor, removing water through replacing with nitrogen gas, carrying out preheating to 50 DEG C, orderly adding MDI and polyether polyol into the reactor, carrying out stirring in vacuum under control of a jacket temperature to 60-80 DEG C for a reaction for 1-3h, fast cooling the reaction system to 55 DEG C to obtain a polyurethaneprepolymer, orderly adding polyester polyol and the hyperbranched polyester polyol pre-melt into the polyurethane prepolymer in vacuum, heating the mixture to 60-80 DEG C, carrying out stirring for areaction for 1-3h, breaking vacuum after the reaction, and removing air bubbles to obtain the hyperbranched polyester hot-melt-type polyurethane adhesive for weaving.

The invention discloses a pressure-sensitive adhesive for PET (Polyester) adhesive tapes and a preparation method thereof. The preparation method comprises the following steps of: uniformly mixing 10-20% butyl acrylate, 15-30% of ethyl hexyl acrylate, 0.5-2% of acrylic acid, 2-5% methyl methacrylate, 2-5% vinyl acetate, 0.5-2% methacrylate-2-hydroxyethyl ester, 20-30% toluene and 20-30% ethyl acetate; heating to 80-85 DEG C in a reaction kettle, and then adding benzoyl peroxide 1-3 times in a heat holding process, wherein the heat holding time is 2-10h; and finally, adding tackifying resin as required on adhesiveness. In the invention, the prepared pressure-sensitive adhesive has high stripping resistance between 1000g and 2000g, and has no adhesive remained to pollute an adhered object in a tearing process.

The invention provides an acrylate pressure sensitive adhesive and a preparation method thereof, and an electronic product, belonging to the technical field of polymer materials. The acrylate pressuresensitive adhesive is prepared from the following raw materials in parts by weight: 70-80 parts of soft monomer, 18-28 parts of hard monomer, 5-15 parts of crosslinking monomer, 3-7 parts of heat resistant monomer, 0.3-1 part of initiator, 3-6 parts of tackifying resin, and solvent. The acrylate pressure sensitive adhesive obtained by optimizing proportion of each monomer and adding a specific amount of tackifying resin has a high adhesive property and high temperature resistance, has good initial adhesion, peeling force and holding force, better balances all adhesion properties, and can be applied to electronics, electrical appliance, military and aerospace fields having special requirements on high temperature resistance of adhesive.

The invention discloses an amphiphilic polymer chain-containing neoprene latex adhesion agent. The adhesion agent comprises the following components in parts by weight: an amphiphilic polymer chain-containing neoprene latex, a tackifying emulsion, a filler, a coagulating agent aqueous solution, an anti-aging agent, a stabilizer, a metal oxide and a thickening agent. With a neoprene latex as a matrix and with methyl methacrylate, methacrylic acid and N,N-dimethyl aminoethyl methacrylate as graft monomers, the amphiphilic polymer chain-containing neoprene latex is prepared by an emulsion graft polymerization reaction. The invention also discloses a preparation method of the amphiphilic polymer chain-containing neoprene latex adhesion agent. The problems of poor storage stability and small initial viscous force are solved, the neoprene latex can be simultaneously skillfully endowed with dispersion stability and demulsification cohesion, and at the same time, the dispersion stability and the initial viscous force of the neoprene latex are improved; and the grafted type neoprene latex adhesion agent has wide application range, high adhesion strength, and remarkable economic benefits and social benefits.

The invention discloses a fluorosilicone modified aqueous pressure-sensitive adhesive used for a polyethylene protection film. The aqueous pressure-sensitive adhesive comprises 95-99w% of a fluorosilicone emulsion and 1-5wt% of a curing agent. The invention also provides a preparation method of the aqueous pressure-sensitive adhesive. The fluorosilicone modified aqueous pressure-sensitive adhesive disclosed in the invention has good adhesion to the polyethylene film, can realize the good balance of initial stick force, peeling strength and cohesive force, and has the advantages of storage stability, heat resistance, cold resistance, acid resistance, alkali resistance, salt resistance and the like.

The invention relates to a preparation method of a safe anti-puncturing tyre. The safe anti-puncturing tyre is sequentially provided with a self-sealing layer, an air-tight layer, a curtain cloth layer, a belted layer and a tread from inside to outside. The preparation method comprises the following steps: (1) extruding the tread by using an extruding machine; (2) spraying and molding an adhesive to form the self-sealing layer; (3) respectively pressing the air-tight layer and the curtain cloth layer by a calendering machine; (4) molding the belted layer; and (5) fitting the self-sealing layer, the air-tight layer, the curtain cloth layer, the belted layer and the tread on a molding machine and integrally molding and fitting to obtain the safe anti-puncturing tyre. The tyre prepared by the preparation method provided by the invention is simple in structure and reasonable in design and has the characteristics of high production efficiency, low cost, good tyre anti-puncturing effect, high safety performance and the like.

The invention discloses an environment-friendly type special universal glue, wherein the formula proposition is that SBS thermoplasticity elastic body 10-15, terpene resin 10-15, C9 petroleum resin 6-12, abietyl glyceride 2-6, ethyl acetate 8-12, butyl acetate 0.5-2, environmental protection solvent oil 30-50, BHT 0.2-1.0, naphthenic oil 0.1-3 and benzoic acid 0.1-0.4. The environment-friendly type special universal glue of the invention has the advantages that first, environmental protection, the universal glue does not contain 'triphenyl'and halogenated hydrocarbon, which is in accordance with the requirement of HJ/T 220-2005 environmental labelling product technical requirement adhesive, second, clean taste and little stimulation, third, fast surface drying speed and strong initial adhesion, fourth, long viscosity retention time, fifth, low viscosity, excellent flowability and convenient construction.

The invention provides a waterborne polyurethane wallpaper glue comprising the following raw material components in parts by weight: 100 parts of waterborne polyurethane resin; 0.1-0.5 part of a wetting levelling agent; 0.1-1.0 part of a mildew preventive; and 0.2-1.0 part of a thickener. The obtained wallpaper glue is simple in construction process, a layer of base film (having an alkali-resistant sealing effect) is not required to be brushed on a wall body before pasting, and the waterborne polyurethane wallpaper glue is directly brushed on wallpaper and then is pasted on the wall body; the waterborne polyurethane wallpaper glue has excellent alkali resistance; a prepared waterborne polyurethane wallpaper glue film is not abnormal when soaked in a 10% sodium hydroxide solution for 72 h and can resist hydrolysis for five years or more; the waterborne polyurethane wallpaper glue has the advantages of stable storage, safety and environmental protection, no release of formaldehyde, and high product pasting fastness, and has the tear strength after pasting and drying reaching 40 N or more; and the waterborne polyurethane wallpaper glue is convenient to construct, has no need for blending, can be directly brushed, and overcomes the disadvantage that a starch glue and a glutinous rice glue are slow to dry when applied in winter.

The invention relates to the fields of adhesives and particularly relates to an ageing resistant and hardening resistant double-component waterborne adhesive spray. The ageing resistant and hardening resistant double-component waterborne adhesive spray comprises a component A and a component B, wherein the component A comprises the following components by weight: 39-41 parts of a waterborne chloroprene rubber emulsion, 30-40 parts of an acrylic emulsion, 7-9 parts of waterborne terpene tackifying resin, and 2-10 parts of sodium dodecylbenzene sulfonate; the component B comprises the following components by weight: 5-10 parts of rosin resin, 1-5 parts of isocyanate, 1-3 parts of gel amorphous silica, and 30-40 parts of deionized water. The adhesive spray has an excellent ageing resistance property, and has quite excellent effects of bonding strength, speed and stability on leather and sponges.

The invention relates to a production technique of a run-flat tire resistant to deflation caused by puncturing. The run-flat tire comprises a tire body. The production technique comprises the following steps: (1) preparing a liquid adhesive; (2) carrying out atomized spraying by spraying the adhesive on the cleaned inner surface of the tire body uniformly with a sprayer; (3) heating the coating to dryness for shape-fixing; and (4) repeating step (2) and step (3) for a plurality of times until a tire inner coating with a thickness between 0.2 and 10 mm is formed. The technique employs liquid raw material, atomized technology, spray flow control, and drying for shape-fixing. The technique is suitable for producing different models of run-flat tires, which are resistant to deflation caused by puncturing, to satisfy the needs of different users. The technique is characterized by high driving efficiency and safety performance, small tire balancing bias, and a uniform, thin, light inner coating with good heat sink performance and thermal stability, etc.

The invention provides a multi-component self-adhesive product, wherein an adhesive layer is at least divided into a plurality of components such as several A component units and several B component units, etc.; the A component units and the B component units are arranged at intervals and are respectively coated on the backside of a surface material layer. The invention improves the initial viscidity and hold tack of the self-adhesive at the same time, thereby realizing fast and firm automatic labeling; moreover, the invention is suitable to paste A type material and B type material, in particular to be used in the anti-fake field.

The invention relates to cationic waterborne polyurethane resin for wallpaper glue. The waterborne polyurethane resin is prepared from, by weight, 70-100 parts of polyhydric alcohols, 50-90 parts of polyisocyanates, 3-30 parts of first chain extender, 3-18 parts of second chain extender and 2.5-8 parts of salt-forming agent. The invention further discloses a preparation method of the cationic waterborne polyurethane resin. The cationic waterborne polyurethane resin is non-toxic, good in performance and simple in preparation method and construction process.