Modified epoxy mortar abrasion-resistant patching material

A technology of repairing materials and epoxy mortar, which is applied in the field of concrete anti-scouring repairing materials, can solve the problems of reducing the curing reaction speed, achieve the effects of reducing the curing reaction speed, avoiding corrosion resistance, and reducing the exothermic peak of the reaction

Active Publication Date: 2014-01-01
WUDA JUCHENG STRUCTURE CO LTD
2 Cites 36 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems in the prior art that the aggregate particle size is too large to affect the corrosion resistance and the curing reac...
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Method used

Abrasion-resistant aggregate: the present invention selects elastic modulus height, hardness is large, wear-resistant quartz sand or carborundum and carry out good gradation, significantly improved the anti-abrasion strength and impact strength of epoxy mortar, wherein , the particle size composition and weight ratio of quartz sand graded aggregate or carborundum graded aggregate is 10~20 mesh: 20~40 mesh: 40~70 mesh: 100~200 mesh=0~1:1~2: 0~2∶0~1, since the particle size of quartz sand graded aggregate or corundum graded aggregate is between 10 and 200 mesh, and the particle size is moderate, it will not affect the corrosion resistance and wear resistance of epoxy mortar At the same time, the present invention selects aggregates with four different particle sizes of 10-20 mesh, 20-40 mesh, 40-70 mesh, and 100-200 mesh. The ratio is adjusted and the use range is wide.
Epoxy resin: the present invention has adopted the flexible modified epo...
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Abstract

The invention relates to a modified epoxy mortar abrasion-resistant patching material which comprises a component A and a component B. The mass ratio of the A component and the B component is 4:1. The A component comprises, by weight, 15-20 parts of epoxy resin, 1.5-2 parts of flexibilizer, 1.5-3 parts of reactive diluent and 75-82 parts of abrasive aggregates. The B component comprises, by weight, 18-24 parts of hardening agent, 1-1.5 parts of coupling agent and 75-80 parts of abrasive aggregates. The abrasive aggregates are quartz-sand-class aggregates or diamond-sand-class aggregates. The mass ratio of aggregates with the particle diameter of 10-20 meshes to aggregates with the particle diameter of 20-40 meshes to aggreates with the particel diameter of 40-70 to aggreates with the particel diameter of 100-200 meshes is 0-1 to 1-2 to 0-2 to 0-1. The hardening agent is a polyether amine hardening agent. According to the modified epoxy mortar abrasion-resistant patching material, the abrasion-resistant strength and the anti-impact strength are improved, the hardening reaction speed is lowered and micro cracks in the early stage of epoxy mortar are avoided.

Technology Topic

Micro cracksReaction speed +5

Examples

  • Experimental program(3)

Example Embodiment

[0039] Example 1:
[0040] A modified epoxy mortar anti-abrasion repair material, the repair material includes A component and B component, and the weight ratio of A component to B component is 4:1, and the components of the A component and The parts by weight ratio are: epoxy resin 20, toughening agent 2, active diluent 3, and wear-resistant aggregate 75. The components of the B component and the parts by weight ratio are: curing agent 24, coupling agent 1, Wear-resistant aggregate 75, wherein the curing agent is polyetheramine curing agent T-403, the wear-resistant aggregate is a quartz sand graded aggregate, and the particle size composition and weight ratio of the aggregate are 10~ 20 mesh: 20-40 mesh: 40-70 mesh: 100-200 mesh=1:2:2:1, the epoxy resin is bisphenol A type E44 epoxy resin or bisphenol A type E51 epoxy resin, The toughening agent is liquid polysulfide rubber, liquid nitrile rubber or liquid styrene butadiene rubber, and the reactive diluent is one of benzyl glycidyl ether, butyl glycidyl ether, and allyl glycidyl ether or Multiple, the coupling agent is 3-aminopropyltriethoxysilane;
[0041] The preparation method of the above modified epoxy mortar anti-abrasion repair material sequentially includes the following steps:
[0042] Preparation of component A: After mixing the epoxy resin, toughening agent, and active diluent in the required proportions, add wear-resistant aggregates and stir well to obtain component A;
[0043] Preparation of component B: After mixing the curing agent and coupling agent in the required proportions, add wear-resistant aggregates and stir well to obtain component B;
[0044] Preparation of modified epoxy mortar anti-abrasion repair material: mix A component and B component evenly according to the required ratio to obtain the modified epoxy mortar anti-abrasion repair material.
[0045] The prepared modified epoxy mortar anti-abrasion repair material was tested for mechanical properties according to "Technical Regulations for Epoxy Mortar" DL/T5193-2004. The results showed that the tensile strength was ≥10.0MPa, the compressive strength was ≥90.0MPa, and the Bending strength ≥30.0MPa, the bond tensile strength with concrete ≥2.5MPa, and abrasion strength 3.563h/(g/cm 2 ), the impact strength is 32.4MPa.

Example Embodiment

[0046] Example 2:
[0047] The steps are the same as in Example 1, except that the components of the A component and their weight ratios are: epoxy resin 15, toughening agent 1.5, active diluent 1.5, wear-resistant aggregate 82, and the B group The components and their weight ratios are: curing agent 24, coupling agent 1, wear-resistant aggregate 75, wherein the wear-resistant aggregate is a quartz sand graded aggregate, and the particle size composition of the aggregate is The weight ratio is 10-20 mesh: 20-40 mesh: 40-70 mesh=1:2:1.
[0048] The prepared modified epoxy mortar anti-abrasion repair material was tested for mechanical properties according to "Technical Regulations for Epoxy Mortar" DL/T5193-2004. The results showed that the tensile strength was ≥10.0MPa, the compressive strength was ≥90.0MPa, and the Flexural strength ≥30.0MPa, the bond tensile strength with concrete ≥2.5MPa, and abrasion strength 3.863h/(g/cm 2 ), the impact strength is 39.8MPa.

Example Embodiment

[0049] Example 3:
[0050] The steps are the same as in Example 1, except that the components of the A component and their weight ratio are: epoxy resin 15, toughening agent 1.5, active diluent 1.5, wear-resistant aggregate 85, and the B group The components and their weight ratios are: curing agent 18, coupling agent 1.5, and wear-resistant aggregate 80.5, wherein the curing agent is polyetheramine curing agent D-230, and the wear-resistant aggregate is emery grade For preparing aggregate, the particle size composition and weight ratio of the aggregate are 10-20 mesh: 20-40 mesh: 40-70 mesh=1:1:2.
[0051] The prepared modified epoxy mortar anti-abrasion repair material was tested for mechanical properties according to "Technical Regulations for Epoxy Mortar" DL/T5193-2004. The results showed that the tensile strength was ≥10.0MPa, the compressive strength was ≥90.0MPa, and the Flexural strength ≥30.0MPa, the bond tensile strength with concrete ≥2.5MPa, and abrasion strength 3.274h/(g/cm 2 ), the impact strength is 36.5MPa.
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PUM

PropertyMeasurementUnit
Tensile strength>= 10.0mPa
Compressive strength>= 90.0mPa
Bending strength>= 30.0mPa
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

  • High hardness
  • High elastic modulus
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