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Modified acrylic resin mortar composition and preparation method thereof

An acrylic resin and composition technology, which is applied in the field of resin mortar rapid repair materials and its preparation, can solve the problems of affecting mechanical properties, high toxicity of raw materials, slow gelation speed, etc., and achieve excellent performance, simple preparation process, and fast curing speed Effect

Active Publication Date: 2012-06-13
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy resin repair material has excellent characteristics such as high strength, low elastic modulus, small shrinkage, and high ultimate tensile resistance. It can resist most chemical erosion encountered by concrete, but it has poor flexibility, slow gelation speed, and cannot Curing: Polyurethane repair materials have excellent comprehensive performance, anti-seepage plugging performance, consolidation performance, vibration resistance and fatigue resistance, but are sensitive to water, easy to foam, and affect mechanical properties. It cannot be cured below ℃; acrylamide repair materials have low viscosity, good pourability, adjustable setting time, and good impermeability, but the raw materials are highly toxic, so they are rarely used at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: The composition of modified acrylic resin mortar composition: A component includes 100 parts of epoxy modified acrylic resin, 10 parts of nano-calcium carbonate, 20 parts of dimethyl phthalate, 100 parts of methacrylic acid, silane 2 parts of coupling agent, 1 part of hydroquinone, 5 parts of N-N dimethylaniline, 10 parts of fumed silica, 1 part of decabromodiphenylethane, 0.2 part of antioxidant, 0.6 part of light stabilizer, UV absorption 0.2 parts of agent and 5 parts of simethicone;

[0028] Component B is 0.5 parts of benzoyl peroxide;

[0029] Component C is 500 parts of quartz sand, 1000 parts of heavy calcium, 500 parts of fly ash, and 500 parts of slag powder;

[0030] The mass ratio of A, B, and C is 255:0.5:2500.

[0031] The main properties of the obtained resin mortar composition: curing time is 50min; 2h, 24h and 7d compressive strength are respectively 11.5MPa, 15.6MPa and 21.7MPa; 2h, 24h and 7d are respectively 312MPa, 434MPa and 550MPa;...

Embodiment 2

[0033] The composition of the modified acrylic resin mortar composition: A component includes 200 parts of epoxy modified acrylic resin, 1 part of liquid polybutadiene, 10 parts of styrene, 0.1 part of N-N diethylaniline, 0.1 part of octabromoether, 0.05 part of antioxidant, 0.05 part of light stabilizer;

[0034] Component B is 3 parts of benzoyl peroxide;

[0035] C component is 50 parts of quartz sand;

[0036] The mass ratio of A, B, and C is 211:3:50.

[0037] The main properties of the obtained resin mortar composition: curing time is 40min; 2h, 24h and 7d compressive strength are respectively 5.1MPa, 12.9MPa and 15.8MPa; 2h, 24h and 7d are respectively 102MPa, 134MPa and 156MPa; The junction strength is 2.7MPa.

Embodiment 3

[0039] The composition of the modified acrylic resin mortar composition: A component includes 100 parts of polyurethane modified epoxy acrylic resin, 4 parts of unsaturated polyester resin, 50 parts of acrylic acid, 0.4 part of cobalt naphthenate, 0.2 part of ammonium polyphosphate, anti 0.2 part of oxidizing agent, 0.2 part of light stabilizer, 0.3 part of ultraviolet absorber;

[0040] B component is 2 parts of methyl ethyl ketone peroxide;

[0041] C component is 100 parts of silica powder;

[0042] The mass ratio of A, B, and C is 155:2:100.

[0043] The main properties of the obtained resin mortar composition: curing time is 1.5h; 2h, 24h and 7d compressive strength are respectively 5.1MPa, 8.7MPa and 12.8MPa; 2h, 24h and 7d are respectively 55MPa, 82MPa and 140MPa; 2h The bonding strength is 3MPa.

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Abstract

The invention provides a modified acrylic resin mortar composition and a preparation method thereof. The composition consists of component materials A, B and C, wherein the component material A comprises modified acrylic resin, a flexibilizer, a plasticizer, a crosslinking agent, a coupling agent, a polymerization inhibitor, an accelerating agent, a thickening agent, a combustion improver, an antioxidant and a defoaming agent; the component material B is an initiator; the component material C is an aggregate, wherein the mass ratio of component A to component B to component C is (100-300): (0.5-3): (50-2500). The composition has the advantages of simple preparation method, easy and simple field construction operation process, good low temperature solidification property, adjustable solidification speed, high mechanical strength, good toughness and good ageing resistance and low temperature resistance.

Description

technical field [0001] The invention relates to a resin mortar rapid repair material and a preparation method thereof. Background technique [0002] At present, repair materials mainly include two categories, one is inorganic repair materials and composite repair materials; the other is organic repair materials. Inorganic repair materials mainly include ordinary cement repair materials and ultra-fine cement. For rapid repair of concrete pavement, rapid hardening and early strength cement suitable for repairing cement concrete pavement has been developed at home and abroad. Composite repair materials mainly refer to polymer mortar or polymer concrete, which have the advantages of high compressive strength, low raw material price and low toxicity, but their hydration reaction is greatly affected by temperature. The curing speed is very slow, which cannot meet the needs of rapid repair. At the same time, the bonding strength with the substrate is low, it is easy to crack, and ...

Claims

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Application Information

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IPC IPC(8): C04B26/10C04B26/16C04B26/04C04B26/32
Inventor 易忠来靳昊李化建谢永江谭盐宾
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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