Fast-setting epoxy impregnating adhesive and preparation method thereof

A technology of impregnating glue and epoxy, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of slow curing speed of impregnating glue, time required for early strengthening of impregnating glue, and no obvious rigid requirements for basic performance, etc. Achieve the effect of high reactivity and good moisture and heat aging resistance

Inactive Publication Date: 2019-03-29
CHENGDU BAJI TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional structural reinforcement projects have no obvious rigid requirements on the curing speed of the impregnating adhesive and the basic properties of the colloid in a short period of time. It is only required that the performance of the impregnating adhesive after curing for seven days meet the corresponding standard requirements. At present, most domestic products meet the standard requirements; In some emergency repair and reinforcement projects, due to the limitation of external conditions, it is bound to put forward high requirements on the curing performance of the impregnated adhesive, which often requires the impregnated adhesive to have good basic properties in a short period of time, while most of the domestic Conventional dipping glue products cannot meet the requirements, mainly as follows: the curing speed of the dipping glue is slow, and the early strength of the dipping glue takes a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fast-setting epoxy impregnating adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A fast-curing epoxy impregnating glue, which is composed of component A and component B at a ratio of 1:0.5 by weight. The components of component A are as follows: bisphenol A type epoxy 100 parts of resin, 0.5 parts of silane coupling agent, 1 part of thixotropic agent, the components of B component are as follows by weight: 100 parts of modified polyamine curing agent.

[0018] The epoxy value of the bisphenol A type epoxy resin is 0.48-0.54.

[0019] The modified polyamine curing agent is a modified polyamine curing agent that still has good curing ability at 5°C and has an active hydrogen equivalent of 100-160.

[0020] The silane coupling agent is selected from γ-aminopropyl triethoxysilane (KH-550), γ-glycidyl ether propyl triethoxysilane (KH-560), γ-propyltrimethoxysilane At least one of base silane (KH-570).

[0021] The present invention also provides a preparation method of fast-curing epoxy impregnating glue, comprising the steps of:

[0022] S1: Preparat...

Embodiment 2

[0026] A fast-curing epoxy impregnating glue, which is composed of component A and component B at a ratio of 1:0.6 by weight. The components of component A are as follows: bisphenol A type epoxy 100 parts of resin, 1 part of silane coupling agent, 3 parts of thixotropic agent, the components of component B are as follows by weight: 100 parts of modified polyamine curing agent.

[0027] The epoxy value of the bisphenol A type epoxy resin is 0.48-0.54.

[0028] The modified polyamine curing agent is a modified polyamine curing agent that still has good curing ability at 5°C and has an active hydrogen equivalent of 100-160.

[0029] The silane coupling agent is selected from γ-aminopropyl triethoxysilane (KH-550), γ-glycidyl ether propyl triethoxysilane (KH-560), γ-propyltrimethoxysilane At least one of base silane (KH-570).

[0030] The present invention also provides a preparation method of fast-curing epoxy impregnating glue, comprising the steps of:

[0031] S1: Preparatio...

Embodiment 3

[0035] A fast-curing epoxy impregnating glue, which is composed of component A and component B at a ratio of 1:0.7 by weight. The components of component A are as follows: bisphenol A type epoxy 100 parts of resin, 2 parts of silane coupling agent, 5 parts of thixotropic agent, the components of component B are as follows by weight: 100 parts of modified polyamine curing agent.

[0036] The epoxy value of the bisphenol A type epoxy resin is 0.48-0.54.

[0037] The modified polyamine curing agent is a modified polyamine curing agent that still has good curing ability at 5°C and has an active hydrogen equivalent of 100-160.

[0038] The silane coupling agent is selected from γ-aminopropyl triethoxysilane (KH-550), γ-glycidyl ether propyl triethoxysilane (KH-560), γ-propyltrimethoxysilane At least one of base silane (KH-570).

[0039] The present invention also provides a preparation method of fast-curing epoxy impregnating glue, comprising the steps of:

[0040] S1: Preparati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
epoxy valueaaaaaaaaaa
Login to view more

Abstract

The invention discloses a fast-setting epoxy impregnating adhesive which is formed by combining a component A and a component B according to the weight ratio of 1:(0.5-0.7). The component A is composed of the following components by weight: 100 parts of bisphenol A epoxy resin, 0.5-2 parts of a silane coupling agent and 1-5 parts of a thixotropic agent. The component B is composed of the followingcomponents by weight: 100 parts of modified polyamine curing agent. The technical problems that the curing speed of conventional epoxy impregnating adhesives is slow and the early strength takes a long time in rush repair and reinforcement engineering with fiber composite materials are solved. The fast-setting epoxy impregnating adhesive provided by the invention can be matched with fiber cloth,and can quickly rush to repair and reinforce a base material. The impregnating adhesive has high reactivity, has the test tensile strength reaching 40 MPa after curing for 4 h, has the positive tensile bonding strength reaching 2.56 MPa, and meets the related requirements of GB 50728. The adhesive has good wet-heat aging resistance and can be used for a long time.

Description

technical field [0001] The invention relates to the technical field of epoxy impregnating glue, in particular to a fast-curing epoxy impregnating glue and a preparation method thereof. Background technique [0002] In the reinforcement of engineering structures, fiber composite material reinforcement technology is a common reinforcement technology. Fiber composite material reinforcement technology usually uses matching adhesives to paste fiber cloth on the surface of the structure to play the role of structural reinforcement and seismic reinforcement. [0003] In the reinforcement technology of fiber composite materials, the adhesive is the link between the base material of the structure to be reinforced and the carbon fiber cloth. The impregnation effect of the impregnating adhesive on the base material and the carbon fiber cloth is good or bad, the curing performance of the impregnating adhesive is good or bad, and the strength of the bonding ability , often determines the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/06C08G59/50
CPCC09J163/00C08G59/50C08K5/5435C08K5/544C09J11/06
Inventor 刘发权
Owner CHENGDU BAJI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap