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Secondary curing epoxy resin adhesive for roads and bridges and preparation method thereof

An epoxy resin and secondary curing technology, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of fast curing speed, inability to rebond the mixture, long curing time, etc.

Inactive Publication Date: 2014-09-24
南京淳净新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the construction of epoxy asphalt adhesive requires special spraying equipment, and the curing time is longer, which takes 30-45 days
Although the epoxy resin adhesive has a good waterproof bonding effect, its curing speed is fast, and the adhesive film formed after curing cannot be bonded to the subsequent pavement mixture, and the bridge deck and the pavement layer cannot be effectively bonded. bond

Method used

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  • Secondary curing epoxy resin adhesive for roads and bridges and preparation method thereof
  • Secondary curing epoxy resin adhesive for roads and bridges and preparation method thereof
  • Secondary curing epoxy resin adhesive for roads and bridges and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Weigh 100 parts (parts by mass, the same below) hydroxyl-terminated polybutadiene liquid rubber (HTPB) (provided by Zibo Qilu Ethylene Chemical Co., Ltd.), and add 20 parts of toluene diisocyanate (TDI) (German BASF company ) and 0.5 parts of butyl ditin laurate (provided by Shanghai Yutian Chemical Co., Ltd.), start stirring, and gradually raise the temperature to 120 °C under the protection of nitrogen, and cool to room temperature after reacting for 2 hours to obtain isocyanate-terminated polybutylene Diene liquid rubber (TDI-HTPB-TDI).

Embodiment 2

[0036] Example 2: 10 parts of TDI-HTPB-TDI, 20 parts of polypropylene glycol (PPG-200) (provided by Jiangsu Haian Petrochemical Factory) and 0.2 parts of tetrabutylammonium iodide (TBAI) (Yixing Kailida Chemical Co., Ltd. Provided by the company) mixed evenly, heated to 160°C, reacted for 2 hours while stirring, and cooled at room temperature for 24 hours to obtain a modified hydroxyl-terminated polybutadiene liquid rubber toughening agent.

Embodiment 3

[0037] Example 3: Mix 10 parts of TDI-HTPB-TDI, 20 parts of polypropylene glycol (PPG-400) (provided by Jiangsu Haian Petrochemical Factory) and 0.2 parts of tetrabutylammonium iodide (TBAI), and heat to 160°C , Reacted for 2 hours while stirring, and cooled at room temperature for 24 hours to obtain a modified hydroxyl-terminated polybutadiene liquid rubber toughening agent.

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Abstract

The invention discloses a secondary curing epoxy resin adhesive for roads and bridges, which comprises a component A and a component B. The component A comprises the following components in parts by mass: 65-70 parts of low-viscosity epoxy resin and 30-35 parts of modifying toughener. The component B comprises the following components in parts by mass: 90-100 parts of curing agent, 5-10 parts of accelerator, 0.5-1 part of coupling agent, 2-5 parts of thixotropic agent and 0.2-0.5 part of defoaming agent. The ratio of the component A to the component B to the component C is 100:(90-100):110. The epoxy resin adhesive is suitable for binding and waterproofing for pavements of steel decks, municipal viaducts, cement concrete decks, tunnels, highways and the like. The invention also discloses a preparation method of the epoxy resin adhesive.

Description

technical field [0001] The invention relates to a thermosetting epoxy resin adhesive, in particular to a secondary curing 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 bridge deck, and threatening the safety of the bridge, the pavement layer and the bridge deck are usually bonded into a whole to give full play to the composite effect of the pavement layer and the bridge deck. Improve the stress of the bridge deck and pavement. This requires the installation of a waterproof bond between the steel or cement concrete 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 a...

Claims

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Application Information

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IPC IPC(8): C09J163/02C09J115/00C09J11/04C09J11/06
Inventor 谢鸿峰王睿张育歌孙一帆
Owner 南京淳净新材料有限公司
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