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High-performance thermosetting epoxy resin adhesive for roads and bridges and preparation method thereof

An epoxy resin, high-performance technology, used in epoxy resin glue, polymer adhesive additives, non-polymer adhesive additives and other directions, can solve the problem of high price, expensive epoxy asphalt materials, epoxy asphalt Complex material construction process and other issues

Inactive Publication Date: 2013-06-19
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy asphalt materials are expensive, and the price of imported epoxy asphalt usually costs 50,000 to 60,000 yuan / ton, and the construction process of epoxy asphalt materials is complicated, requiring special spraying equipment for construction at high temperatures
Although, at present, some bridges in my country have used Japanese epoxy resin adhesive as a waterproof adhesive layer, but its price is extremely high, generally 100,000-160,000 yuan / ton

Method used

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  • High-performance thermosetting epoxy resin adhesive for roads and bridges and preparation method thereof
  • High-performance thermosetting epoxy resin adhesive for roads and bridges and preparation method thereof
  • High-performance thermosetting epoxy resin adhesive for roads and bridges and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Example 1: Using tetrafluoroboric acid (provided by Nanjing Chemical Reagent Co., Ltd.) as a catalyst, epoxy soybean oil is added to the boiled methanol and tetrafluoroboric acid mixture, wherein the molar ratio of epoxy groups to methanol is 1: 11. Reflux reaction for 1 hour. After the reaction, stop heating, cool to room temperature, add concentrated ammonia water dropwise to neutralize. Methanol was distilled off under reduced pressure, and suction filtered to obtain a light yellow transparent liquid soybean oil polyol with a hydroxyl value of 115 mg KOH / g. Add 0.5 parts of butyl ditin laurate ( (provided by Shanghai Yutian Chemical Co., Ltd.) under nitrogen protection at 90°C for 1 h with mechanical stirring to obtain a soybean oil-based polyurethane prepolymer, in which epoxy soybean oil (ESO), soybean oil-based polyol (polyol), isophorone di The infrared spectra of isocyanate (IPDI) and soybean oil-based polyurethane prepolymer (prepolymer) are shown in figure...

Embodiment 2

[0045]Embodiment 2: Weigh 100 parts of bisphenol A glycidyl ether epoxy resin (E51, provided by Wuxi Bluestar Petrochemical Co., Ltd.), add 25 parts of soybean oil-based polyurethane prepolymer obtained in Example 1, and start stirring. And raise the temperature to 60°C, cool to room temperature after reacting for 2 hours, add 10 parts of C12-C14 alkyl glycidyl ether (provided by Wuxi Pulitai Chemical Coating Co., Ltd.), to obtain high-performance thermosetting epoxy resin adhesive for road and bridge A component of the binder.

Embodiment 3

[0046] Example 3: Weigh 100 parts of bisphenol A glycidyl ether epoxy resin (E51), add 33 parts of the soybean oil-based polyurethane prepolymer obtained in Example 1, start stirring, and raise the temperature to 60°C, After reacting for 2 hours, cool to room temperature, and add 8 parts of C12-C14 alkyl glycidyl ether to obtain component A of high-performance thermosetting epoxy resin adhesive for road and bridge.

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Abstract

The invention provides a high-performance thermosetting epoxy resin adhesive for roads and bridges. The adhesive comprises a component A and a component B, wherein, the component A comprises the following components in parts by mass: 100 parts of epoxy resin, 25 to 33 parts of flexibilizer, and 5 to 10 parts of diluent; the component B comprises the following components in parts by mass: 80 to 120 parts of curing agent, 5 to 10 parts of accelerant, 0.5 to 2 parts of coupling agent, 1 to 10 parts of reinforcing agent, and 0.2 to 0.5 part of antifoaming agent; and the ratio of the component A to the component B is 100:100-100:120. According to the adhesive, a flexible long-chain aliphatic amine serving as the curing agent has a curing reaction with the epoxy resin to form a solid crosslinking structure, so that the epoxy resin adhesive is high in adhesion capability and water resistance; The toughness of the epoxy asphalt adhesive is improved by adopting the soybean oil-based polyurethane to be adapted to the flexibility of a steel plate, and the soybean oil-based polyurethane containing massive hydroxyl has good compatibility with the epoxy resin. The adhesive is applicable to adhesion and waterproofing of steel bridge decks, viaducts, cement concrete bridge decks, tunnels, expressways and other decks. The invention discloses a preparation method of the high-performance thermosetting epoxy resin adhesive.

Description

technical field [0001] The invention relates to a thermosetting epoxy resin adhesive, in particular to a high-performance thermosetting epoxy resin adhesive for road bridges and a preparation method thereof. Background technique [0002] In the bridge deck pavement project, in order to prevent moisture from penetrating into the concrete structure of the bridge deck, corroding the steel bars, and threatening the safety of the bridge; Due to the stress on the deck and the pavement, a waterproof bonding layer needs to be installed between the steel bridge deck or the cement concrete bridge deck and the asphalt pavement. The waterproof adhesive layer is generally made of elastic material with large deformation capacity. When the bridge deck deforms horizontally under the action of temperature changes or driving loads, the waterproof adhesive layer can absorb part of the relative displacement between the pavement and the bridge deck, thereby reducing the Stresses within the smal...

Claims

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Application Information

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IPC IPC(8): C09J163/02C09J175/04C09J11/04C09J11/06C09J11/08C08G59/50C08G18/36E01D19/08
Inventor 谢鸿峰金辉尹海燕王睿王治流程镕时
Owner NANJING UNIV
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