33results about How to "High initial adhesion" patented technology

The invention relates to a room-temperature rapid-curing polyurea adhesive and a preparation method thereof. The polyurea adhesive comprises A and R components, wherein the A component comprises polyether polyol and polyisocyanate; the R component comprises amino polyether and an amine chain extender. The polyurea adhesive is applied to the surface of bonded buoyancy material modules, has the effects of rapid curing and rapid tackifying, is higher in primary adhesive force and can reach the machining strength in the short time; the modules do not need to be clamped and fixed in splicing, bonding and curing processes and can be bonded on machining site, and the operation is convenient and reliable.

The present invention aims to provide an adhesive composition which has high initial adhesion and can strongly fix an adherend, while can be peeled off easily by light irradiation even after undergoing a high-temperature process at 200°C or higher. The present invention also aims to provide an adhesive tape produced from the adhesive composition, and wafer treatment method using the adhesive composition. The present invention provides an adhesive composition including an adhesive component, a photoinitiator, and a silicone compound containing a functional group that is crosslinkable with the adhesive component.

The invention discloses a production method of a foam tape. The foam tape comprises a TPV (Thermoplastic Vulcanizate) film, a bonding layer, a foam layer, a pressure-sensitive adhesive layer and a PE (Poly Ethylene) film. The production method comprises the following steps: a) performing polyurethane affinity treatment on the TPV film, and coating the surface of the TPV film with a single-component polyurethane adhesive to obtain the bonding layer; b) sequentially adding 10-30% of anti-hydrolysis component and 1-2% of foam regulation agent into waterborne polyurethane emulsion to form a polyurethane mixed liquid; c) performing polyurethane release treatment on the PE film; d) under a temperature condition of 100-120 DEG C, foaming the polyurethane mixed liquid to form the foam layer on the TPV film; e) coating the foam layer with the pressure-sensitive adhesive so that the PE film and the polyurethane foam are bonded. By adopting the method disclosed by the invention, the produced waterborne polyurethane foam tape has good rebound resilience, high elongation, high strength and long anti-aging time, and is environment-friendly.

Provided are a thermoplastic liquid crystal polymer molding having good adhesion, and a method for manufacturing the same. The thermoplastic liquid crystal polymer molding is a molding constituted from a thermoplastic polymer whereby an optically anisotropic molten phase can be formed, and has a region to be bonded in at least a portion thereof, and in the results of X-ray photoelectron spectroscopic analysis of the surface of the region to be bonded, the ratio / of the proportion of the peak area of [C-O bonds] and the proportion of the peak area of [COO bonds] to the peak area of C (1s) is 1.5 or greater, and the ratio / of the proportion of the peak area of [C=O bonds] and the proportion of the peak area of [COO bonds] to the peak area of C (1s) is 0.10 or greater.

The invention discloses a weather resistance adhesive. The weather is a dual-component polyurethane adhesive comprising a component A and a component B, wherein the component A is composed of polyester polyol, acrylic polyol, polyether polyol and auxiliaries, and the component B is mainly composed of isocyanate. The obtained adhesive has the better initial stripping resistance, can keep the good adhesion stress on the poor environment condition, xanchochromia is not likely to occur, and the weather resistance adhesive can be applied to occasions with the requirement for high weather resistance.

An aqueous silylated urethane composition useful as an aqueous adhesive which is highly safe, develops excellent tack in a short time, and is excellent in initial bond strength. The aqueous silylated urethane composition is characterized by comprising (A) an alkoxysilyl-terminated urethane prepolymer having an anionic group and a tertiary amino group which prepolymer is produced by reacting a polyol compound (A1) free from anionic groups, a polyol compound (A2) having an anionic group, a compound (A3) having a tertiary amino group and an isocyanate-reactive group, a polyisocyanate compound (A4), an alkoxysilane compound (A5) having an isocyanate-reactive group, and an amine chain extender (A6), (B) a basic compound, and (C) water.

The specification discloses a bimetallic composite plate material and a manufacturing process thereof; the bimetallic composite plate material comprises a surface layer metal and a bottom layer metal; a polyurethane adhesive layer is disposed between the surface layer metal and the bottom layer metal. The manufacturing process of the bimetallic composite plate material comprises the following steps: a. uniformly coating a polyurethane adhesive between the surface layer metal and the bottom layer metal; b. superposing the surface layer metal and the bottom layer metal; c. coating a protection film on the surface layer metal; d. performing normal temperature rolling compounding or heating rolling compounding of the surface layer metal and the bottom layer metal; e. shearing the plate; f. curing at a medium or low temperature.

The invention belongs to the technical field of highway engineering, and specifically relates to a polyurethane single-component road liquid joint glue and a preparation method thereof. The polyurethane single-component road liquid joint glue proposed by the invention includes diphenylmethane diisocyanate, poly Ether polyol, chlorinated paraffin, dioctyl phthalate, asphalt, catalyst, curing agent and other materials are prepared by reaction. Traditional solid joint glue needs to be heated before use, and heating will inevitably produce harmful gases to pollute the environment. , the most important traditional solid joint glue has the problems of environmental protection, aging resistance and poor wear resistance, and its aging cycle is about one year. If it exceeds this cycle, it will inevitably produce multiple repairs, and it will appear easy to flow at high temperature and easy to flow at low temperature. Brittle problem. The polyurethane one-component liquid joint glue of the present invention can solve all the above-mentioned problems and can completely replace the solid joint glue. It not only has strong adhesion but also has excellent physical properties, which cannot be replaced by other joint glue.

The invention discloses a method for improving the initial adhesive force of nylon 66 dipped tyre cord fabric. The method includes the steps of: 1) passing a non-dipped nylon 66 cord fabric through a dip solution at a speed of 50-120m / min; and 2) passing the dipped nylon 66 cord fabric through a drying area 1A, a drying area 1B, a drafting area and a shaping area in order at a speed of 50-120m / min, and then conducting packaging and storage. The dip solution is prepared by mixing 0.9-2.8 parts of resorcinol, 1.4-4.1 parts of formaldehyde, 0.1 part of caustic soda, 2.9-25.7 parts of natural latex, 8.6-51.5 parts of butadiene vinyl-pyridine rubber latex, 1.3-3.9 parts of ammonia water, and 28.9-79.2 parts of low purity water at 5-35DEG C for 5-9h. According to the invention, the dip solution greatly increases the natural latex content, the initial adhesive force of the prepared nylon 66 dipped tyre cord fabric finished product is increased to 500-1000g / 5 threads, and the production cost is low, therefore the method is easy for industrialization.

In order to solve the problem that the thickness of the existing automotive reinforcing film is fixed and the reinforcing effect is not ideal, the invention proposes a high-foaming reinforcing film. The reinforcing film is composed of the following parts by mass: carboxyl-terminated liquid nitrile rubber 1-10; calcium carbonate 5-50; hydantoin epoxy resin 10-40; foaming agent 1-5; Butyl ester 5‑20; peroxide curing agent 0.1‑1; curing agent 1‑10. The advantage of the present invention is that the reinforcing film applied with the reinforcing film is lighter, which is beneficial to promote the weight reduction of automobiles. And its microcellular foaming can increase the strength of the reinforced film itself. In the case of foaming, the reinforcement ratio can reach 5-6 times. At the same time, due to the existence of the mesopore structure, the damping and shock absorption effect is better, and the existence of micropores can disperse the stress of the reinforcing film when the epoxy is cured. When the reinforcing film is applied, it has better conformability and will not make the steel plate deformed.

The present invention relates to a smearing epoxy anti-corrosion coating for underwater concrete and steel structure and the preparation thereof, comprising the blending of component A and component B. The present invention is characterized in that the Component A consists of 20-40wt percent of solvent-free epoxide resin, 0-6wt percent of glycidyl ether epoxy active diluent, 13-50wt percent of barite powder, 0-30wt percent of titanium pigment, 0.5-2wt percent of modified polyamide thixotropic agent, 0.2-0.5wt percent of dispersant, 0.2-0.5wt percent of defoamer and 1-4wt percent of resin acceptor; the preparation viscosity is 40000-120000cP and the proportion is 1.5-2.5. The component B consists of 10-30wt percent of C5-C20 hydrocarbon chain Mannich di-benzene-ring epoxy curing agent, 2-10 percent of reaction typed promoter, 2, 4, 6-tri-dialkyl amine alkylamine methyl phenol. The coating of the invention has the advantages of strong adhesive attraction at the initial stage, excellent initial adhesive attraction under dynamic water, quick solidification in underwater construction and no drain and spalling, and can resist the impact of water with the speed of 1m per second, realize initial set in an hour to reach 30-50 percent of the design strength and reach more than 1MPa of bond strength in 24 hours, thereby overcoming the disadvantage of difficult coating under dynamic water of the existing epoxy coating.