Temperature-resistant, corrosion-resistant and high-adhesion adhesive and preparation method thereof

Abstract

The invention discloses a temperature-resistant, corrosion-resistant and high-adhesion adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The temperature-resistant, corrosion-resistant and high-adhesion adhesive consists of two components, i. e., an adhesive A and an adhesive B, in the weight ratio of 100:1-10, wherein the adhesive A consists of chemical plasticizing vinyl ester resin, a polymerization inhibitor, a low shrinkage agent, a free radical curing solvent, gas-phase silicon dioxide, inorganic filler, a coupling agent, a defoaming agent, color paste or paint, a promoter and a promotion additive; and the adhesive B consists of phthalic ester, peroxide and inertial powder filler. The adhesive provided by the invention has the performance of heat resistance, corrosion resistance, penetration resistance, adhesion, positioning, impact resistance and the like, can be formed into different types at normal temperature, and medium and high temperature, is easy and convenient to operate, can bring the unique advantage of the adhesive into full play on some occasions requiring to paying attention to corrosion resistance, adhesion, heat resistance and the like, and is suitable for mutual adhesion among a continuous cellulose material, a concrete material, a metal material, stone, FRP (Fiber Reinforce Plastic), thermoplastic plastic and the like.

Description

technical field

[0001] The invention belongs to the technical field of adhesives, and in particular relates to an adhesive with high temperature resistance, corrosion resistance and high bonding performance and a preparation method thereof. Background technique

[0002] Vinyl ester resin is a vinyl ester product obtained by the ring-opening reaction of epoxy resin and methacrylic acid, and then dissolved in styrene to obtain a free radical curing thermosetting resin, the main ester of bisphenol A vinyl ester resin Both ends of the molecular chain contain vinyl groups, and the middle skeleton is a bisphenol A type epoxy resin structure. The main molecular chain of phenolic vinyl ester resin has a vinyl group at the end of each benzene ring-linked molecular side chain, and the skeleton is a phenolic epoxy resin structure. The final vinyl ester resin has the advantages of both epoxy resin and unsaturated polyester resin: excellent mechanical properties, excellent corrosion res...

Examples

Embodiment 1

[0036] Example 1 Normal temperature vulcanization adhesive

[0037] (1) 140g of MDI is added to the reactor with a stirring system, condenser, dropping device, heating and cooling temperature control device, the system is heated to 60°C, and the mixture of 32g polypropylene glycol 400 and 320g polypropylene glycol 2000 is added dropwise to the reaction in about 30 minutes Stir in the bottle, after the dropwise addition, add 1g of dibutyltin dilaurate catalyst dropwise, and keep the temperature of the reaction system at 60°C to 65°C, after reacting for about 3.5 hours, take a sample to test that the free isocyanate group is less than 150ppm, and then Add 70g of β-hydroxyethyl (meth)acrylate dissolved in 0.5g of phenothiazine dropwise within 30 minutes, and control the temperature of the system in the reaction bottle not to exceed 80°C. After the dropwise addition, maintain the system at 65°C to 70°C After about 2.5 hours, add 300g of styrene, and then lower the temperature to 4...

Embodiment

[0042] Example [2] - medium and high temperature vulcanization adhesive

[0043] (1) 120g of MDI is added to the reactor with stirring system, condenser, dropping device, heating and cooling temperature control device, the temperature of the system is raised to 60°C, and the mixture of 30g polypropylene glycol 400 and 300g polypropylene glycol 2000 is added dropwise to the reaction in about 30min Stir in the bottle, after the dropwise addition, add 1g of dibutyltin dilaurate catalyst dropwise, and keep the temperature of the reaction system at 60°C to 65°C, after reacting for about 3.5 hours, take a sample to test that the free isocyanate group is less than 150ppm, and then Add 70g of β-hydroxyethyl (meth)acrylate dissolved in 0.5g of phenothiazine dropwise within 30 minutes, and control the temperature of the system in the reaction bottle not to exceed 80°C. After the dropwise addition, maintain the system at 65°C to 70°C After about 2.5 hours, add 280g of styrene, and then l...

technical field

[0001] The invention belongs to the technical field of adhesives, and in particular relates to an adhesive with high temperature resistance, corrosion resistance and high bonding performance and a preparation method thereof. Background technique

[0002] Vinyl ester resin is a vinyl ester product obtained by the ring-opening reaction of epoxy resin and methacrylic acid, and then dissolved in styrene to obtain a free radical curing thermosetting resin, the main ester of bisphenol A vinyl ester resin Both ends of the molecular chain contain vinyl groups, and the middle skeleton is a bisphenol A type epoxy resin structure. The main molecular chain of phenolic vinyl ester resin has a vinyl group at the end of each benzene ring-linked molecular side chain, and the skeleton is a phenolic epoxy resin structure. The final vinyl ester resin has the advantages of both epoxy resin and unsaturated polyester resin: excellent mechanical properties, excellent corrosion res...

Examples

Embodiment 1

[0036] Example 1 Normal temperature vulcanization adhesive

[0037] (1) 140g of MDI is added to the reactor with a stirring system, condenser, dropping device, heating and cooling temperature control device, the system is heated to 60°C, and the mixture of 32g polypropylene glycol 400 and 320g polypropylene glycol 2000 is added dropwise to the reaction in about 30 minutes Stir in the bottle, after the dropwise addition, add 1g of dibutyltin dilaurate catalyst dropwise, and keep the temperature of the reaction system at 60°C to 65°C, after reacting for about 3.5 hours, take a sample to test that the free isocyanate group is less than 150ppm, and then Add 70g of β-hydroxyethyl (meth)acrylate dissolved in 0.5g of phenothiazine dropwise within 30 minutes, and control the temperature of the system in the reaction bottle not to exceed 80°C. After the dropwise addition, maintain the system at 65°C to 70°C After about 2.5 hours, add 300g of styrene, and then lower the temperature to 4...

Embodiment

[0042] Example [2] - medium and high temperature vulcanization adhesive

[0043] (1) 120g of MDI is added to the reactor with stirring system, condenser, dropping device, heating and cooling temperature control device, the temperature of the system is raised to 60°C, and the mixture of 30g polypropylene glycol 400 and 300g polypropylene glycol 2000 is added dropwise to the reaction in about 30min Stir in the bottle, after the dropwise addition, add 1g of dibutyltin dilaurate catalyst dropwise, and keep the temperature of the reaction system at 60°C to 65°C, after reacting for about 3.5 hours, take a sample to test that the free isocyanate group is less than 150ppm, and then Add 70g of β-hydroxyethyl (meth)acrylate dissolved in 0.5g of phenothiazine dropwise within 30 minutes, and control the temperature of the system in the reaction bottle not to exceed 80°C. After the dropwise addition, maintain the system at 65°C to 70°C After about 2.5 hours, add 280g of styrene, and then l...