Double-component high-strength building epoxy structural adhesive and preparing method thereof

An epoxy structural adhesive, high-strength technology, used in epoxy resin adhesives, adhesives, polymer adhesive additives, etc., can solve the problems of decreased colloid strength, inability to stick to steel adhesive, insufficient elasticity, etc., and achieve no decrease in strength. , The effect of convenient construction and paste, and improved toughness

Active Publication Date: 2015-11-18
CARBON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength and toughness of the structural adhesive used to paste carbon fiber boards are higher than those of steel adhesives, so steel adhesives cannot be used as carbon plate adhesives in reinforcement projects
[0003] The chemical composition of building structure adhesives is generally based on epoxy resin, which has the advantages of strong adhesion and high strength, but also has the disadvantages of high brittleness and insufficient elasticity.
Adding a toughening agent to improve the toughness of the epoxy resin will also lead to a decrease in the strength of the colloid

Method used

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  • Double-component high-strength building epoxy structural adhesive and preparing method thereof
  • Double-component high-strength building epoxy structural adhesive and preparing method thereof
  • Double-component high-strength building epoxy structural adhesive and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The two-component high-strength architectural epoxy structural adhesive provided in this example is mainly composed of component A and component B mixed in a weight ratio of 1.8:1; wherein:

[0032] The A component mainly consists of the following raw materials by weight:

[0033]

[0034] The B component mainly consists of the following raw materials by weight:

[0035]

[0036] Preparation:

[0037] 1) Prepare A component and B component respectively: Wherein,

[0038] Preparation of component A: first weigh the raw materials in component A according to the above weight, and then mix bisphenol A type epoxy resin, bisphenol F type epoxy resin, n-butyl glycidyl ether, liquid nitrile rubber and coupling Add the agent into the mixer and stir evenly, then add the fumed silica thixotropic agent, and finally add the quartz powder until it is evenly stirred, then pack it;

[0039] Preparation of component B: Weigh the raw materials in component B according to the abo...

Embodiment 2

[0042] The high-strength architectural epoxy structural adhesive provided in this example is composed of component A and component B mixed in a weight ratio of 2.5:1; wherein:

[0043] The A component consists of the following raw materials by weight:

[0044]

[0045] The B component consists of the following raw materials by weight:

[0046]

[0047]

[0048] Preparation:

[0049] 1) Prepare A component and B component respectively: Wherein,

[0050] Preparation of component A: first weigh each raw material in component A according to the above weight, and then mix bisphenol A type epoxy resin, bisphenol F type epoxy resin, polyethylene glycol diglycidyl ether, polysulfide rubber and Add the joint agent into the mixer and stir evenly, then add fumed silica thixotropic agent, finally add talcum powder and calcium carbonate until evenly stirred, and pack;

[0051] Preparation of component B: Weigh the raw materials in component B according to the above ratio, then ...

Embodiment 3

[0054] The high-strength architectural epoxy structural adhesive provided in this example is composed of component A and component B mixed in a weight ratio of 2:1; wherein:

[0055] The A component consists of the following raw materials by weight:

[0056]

[0057]

[0058] The B component consists of the following raw materials by weight:

[0059]

[0060] Preparation:

[0061] 1) Prepare A component and B component respectively: Wherein,

[0062] Preparation of component A: First, weigh each raw material in component A according to the above weight, and then mix bisphenol A epoxy resin, bisphenol F epoxy resin, polypropylene glycol diglycidyl ether, sea-island structure toughener and coupler Add the coupling agent into the mixer and stir evenly, then add the fumed silica thixotropic agent, and finally add talc powder and quartz powder until the mixture is evenly stirred, then pack;

[0063] Preparation of component B: Weigh the raw materials in component B acco...

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Abstract

The invention provides double-component high-strength building epoxy structural adhesive and a preparing method thereof. The structural adhesive is mainly formed by mixing a component A and a component B at the weight ratio of 1.8-2.5:1. The component A is mainly composed of bisphenol A type epoxy resin, bisphenol F type epoxy resin, glycidyl ether diluent, a flexibilizer, a coupling agent, a thixotropic agent I and filler I. The component B is mainly composed of a complex-amine curing agent, an accelerator, hixotropic agent II and filler II. The epoxy structural adhesive is used for reinforcing construction of carbon fiber plates, and the carbon fiber plates are light in mass, convenient to bond in construction (the structural adhesive does not flow) and high in strength. Compared with a steel bonding construction method, the procedures of welding, polishing, pressurizing and the like are not needed in the method. The complex-amine curing agent is adopted in the developed component B, and the curing object is high in bonding strength, good in water resistance and good in toughness. The epoxy resin adhesive component A is free of crystallization, easy to smear and convenient to construct.

Description

technical field [0001] The invention belongs to building structure adhesives, in particular to a two-component high-strength building epoxy structural adhesive and a preparation method thereof. Background technique [0002] Reinforced with carbon fiber plate, because of its increased thickness, the stress condition of the bent member is significantly improved, and it is not easy to be corroded by the environment. The tensile strength of carbon fiber plate is high, which is 7 to 10 times that of steel with the same cross-sectional area. The effect of a single layer is equivalent to 4 to 8 layers of carbon fiber cloth. When carbon fiber cloth and steel plate are not suitable for reinforcement, carbon fiber board can be used for structural member reinforcement. The structural glue used for bonding usually adopts matching and suitable glue types, and its performance should meet its specification requirements. The promulgated national standard GB50728-2011 "Technical Specificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/08C09J11/06C09J11/04C08G59/62
Inventor 周洪芝许小海李新雷
Owner CARBON TECH CO LTD
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