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Epoxy adhesive for bonding bridge segments

An epoxy adhesive and segment technology, which is applied in the directions of adhesive, epoxy resin, adhesive type, etc., can solve the problems of poor comprehensive performance and difficulty in meeting the requirements for the use of segment prefabricated sealants.

Active Publication Date: 2020-10-23
CHINA RAILWAY ERYUAN ENG GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many segmental prefabricated and assembled bridge sealant-related products on the market, but their comprehensive performance is poor, and it is difficult to meet the requirements for the use of segmental prefabricated and assembled sealants in the fields of rail transit bridge construction and other fields.

Method used

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  • Epoxy adhesive for bonding bridge segments
  • Epoxy adhesive for bonding bridge segments
  • Epoxy adhesive for bonding bridge segments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A component

[0043] E51 epoxy resin: 34 parts, hydrogenated bisphenol A epoxy resin HE-2025 (Shanghai Complex New Materials Co., Ltd.): 41 parts, 1,2-cyclohexanediol diglycidyl ether: 14 parts, core-shell structure rubber toughener P52 (Germany Wacker): 14 parts, fumed silica: 7 parts, silicon powder: 82 parts, titanium dioxide: 10 parts, glass fiber (10 μm in diameter, 2 mm in length): 5 parts, silane coupling agent KH560 : 1 part, ultraviolet absorber UV328: 0.5 part, antioxidant 1010: 0.4 part, defoamer: 0.2 part.

[0044] B component

[0045] Contains phenolic modified HTDA: 12 parts, phenolic modified hexamethylenediamine: 12 parts, epoxy addition modified TAC: 12 parts, DMP-30: 0.2 parts, fumed silica: 10 parts, silica powder: 21 parts , light stabilizer TINUVIN 292: 0.5 parts, carbon black: 2 parts.

[0046] The above-mentioned components A and B were blended at a mass ratio of 3:1 to obtain an epoxy adhesive.

Embodiment 2

[0048] A component

[0049] Premix MX125 of bisphenol A epoxy resin and core-shell rubber toughening agent (Japan Bell Chemical Co., Ltd., core-shell toughening agent content 25%): 50 parts, hydrogenated bisphenol A epoxy resin EP4080E (Japan Eddie Branch ADEKA): 42 parts, 1,6-hexanediol diglycidyl ether: 10 parts, fumed silica: 8 parts, silicon micropowder: 82 parts, titanium dioxide: 10 parts, carbon fiber (8 μm in diameter, 1.5 in length mm): 5 parts, silane coupling agent 2-(3,4-epoxycyclohexyl) ethyltriethoxysilane (Nanjing Nengde New Materials): 1 part, ultraviolet absorber UV328: 0.5 parts, Antioxidant 1010: 0.4 parts, defoamer: 0.2 parts.

[0050] B component

[0051] Contains phenolic modified HTDA: 12 parts, phenolic modified hexamethylenediamine: 7.2 parts, epoxy addition modified TAC: 16.8 parts, DMP-30: 0.2 parts, fumed silica: 10 parts, silicon micropowder: 21 parts , light stabilizer TINUVIN 770: 0.5 parts, carbon black: 2 parts.

[0052] The above-mentioned...

Embodiment 3

[0054] A component

[0055] E51 epoxy resin: 15 parts, premixed MX154 of bisphenol A epoxy resin and core-shell rubber toughening agent (Nippon Kaneka Co., Ltd., core-shell toughening agent content 40%): 35 parts, hydrogenated bisphenol A Epoxy resin HE-2025 (Shanghai Complex New Materials Co., Ltd.): 40 parts, 1,2-cyclohexanediol diglycidyl ether: 12 parts, fumed silica: 7 parts, silicon powder: 80 parts, titanium dioxide : 12 parts, carbon fiber, basalt fiber (10 μm in diameter, 1 mm in length): 6 parts, silane coupling agent KH560: 1 part, ultraviolet absorber UV329: 0.5 part, antioxidant 1076: 0.4 part, defoamer: 0.2 parts.

[0056] B component

[0057] Contains phenolic modified HTDA: 12 parts, phenolic modified hexamethylenediamine: 7.2 parts, cyanoethylated modified TAC: 16.8 parts, methylimidazole: 0.2 parts, fumed silica: 10 parts, silicon micropowder: 21 parts , light stabilizer TINUVIN 123: 0.5 parts, carbon black: 2 parts.

[0058] The above components A and B ...

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Abstract

The invention relates to an epoxy adhesive for bonding bridge segments. The epoxy adhesive is prepared from a component A and a component B; the weight ratio of the epoxy resin component A to the curing agent component B is (2.8-3.2): 1; the epoxy resin component A and the curing agent component B contain a plurality of raw materials; the plurality of raw materials are matched with one another, particularly, a core-shell structure rubber toughening agent is added into the component A, and short fibers with the proper length-diameter ratio are used, so that the prepared adhesive has good impactresistance and fatigue resistance, and the requirements of the fields of rail transit bridge construction and the like on segment prefabricated assembly sealants are met.

Description

technical field [0001] The invention belongs to the technical field of epoxy adhesives, and in particular relates to an epoxy adhesive for bonding bridge segments. Background technique [0002] Segmental prefabricated assembled bridges are widely used in urban expressway viaducts, light rail, high-speed rail and other fields. The requirements are becoming more and more stringent. Among them, the high impact resistance and fatigue stress resistance of the sealants used in the construction of bridges using the segmental prefabricated assembly process are particularly important. [0003] At present, there are many segmental prefabricated and assembled bridge sealant-related products on the market, but their comprehensive performance is poor, and it is difficult to meet the requirements for the use of segmental prefabricated assembled sealants in the fields of rail transit bridge construction and other fields. Contents of the invention [0004] The purpose of the present inve...

Claims

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Application Information

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IPC IPC(8): C09J163/02C09J11/04C09J11/08
CPCC09J163/00C09J11/04C09J11/08C08L2205/03C08L2205/025C08K2003/2241C08K2201/003C08K2201/004C08L2207/53C08K2201/016C08L63/00C08K13/04C08K7/26C08K3/36C08K3/22C08K7/14C08K7/06C08K7/10
Inventor 王玉珏马雅林任杰李秀华任万敏吴涛姜玄照李海柱李川张予界汪新凯谯寒中张君刘晓琴郑新辉臧家庆
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD