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Polymeric cement concrete additive and preparation method thereof

A technology for cement concrete and additives, applied in the field of concrete additives, can solve the problems of poor concrete material strength, fluidity, durability and impermeability, low requirements for equipment and reaction conditions, and single function, and achieve excellent cement additives. The effect of grinding effect, equipment and reaction conditions is not high, and the components are simple

Active Publication Date: 2018-10-12
广西建津科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the defects in the prior art, the present invention provides a polymer cement concrete additive and a preparation method thereof, the preparation method is simple and easy, the raw materials are easy to obtain, the price is low, the requirements for equipment and reaction conditions are not high, and it is suitable for industrial production The polymer cement concrete additive prepared by the preparation method overcomes the single function of traditional additives, large dosage, and the technical problems that the effect of improving and improving the strength, fluidity, durability and impermeability of concrete materials is not obvious , has the advantages of multiple functions, more significant effects in improving and improving the strength, fluidity, durability and impermeability of concrete materials, less dosage, better plasticizing performance, and has no negative impact on the performance of reinforced concrete

Method used

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  • Polymeric cement concrete additive and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A preparation method of a polymer cement concrete additive, comprising the steps of:

[0028] 1) Dissolve 10 g of furan-2,3,4,5-tetracarboxylic acid and 17.8 g of glycerol propoxy triglycidyl ether in 50 g of dimethyl sulfoxide to form a solution, and then add 3 g of triphenylphosphine to it, Under a nitrogen atmosphere, stir and react at 100°C for 10 hours, then precipitate in acetone, filter, and wash with acetone for 3 times, and remove the acetone by rotary evaporation to obtain a polycondensate of furan ethers;

[0029] 2) Dissolve 20 g of the furan ether polycondensate prepared in step 1) in 50 g of isopropanol, and add 10 g of 1-naphthylamine-3,6,8-trisulfonic acid disodium salt to it, at 70°C The reaction was stirred for 6 hours, and the isopropanol was removed by rotary evaporation to obtain a furan ether polycondensation product modified by naphthyl sulfonate;

[0030] 3) Dissolve 20 g of the furan ether polycondensate modified by naphthyl sulfonate prepared ...

Embodiment 2

[0033] A preparation method of a polymer cement concrete additive, comprising the steps of:

[0034] 1) Dissolve 10 g of furan-2,3,4,5-tetracarboxylic acid and 17.8 g of glycerol propoxy triglycidyl ether in 60 g of N,N-dimethylformamide to form a solution, and then add three 3.5 g of ethylamine, stirred and reacted at 105° C. for 10.5 hours under a helium atmosphere, then precipitated in acetone, filtered, and washed with acetone 4 times, and the acetone was removed by rotary evaporation to obtain a polycondensate of furan ethers;

[0035] 2) Dissolve 22 g of the furan ether polycondensate prepared in step 1) in 53 g of ethanol, and add 9 g of 1-naphthylamine-3,6,8-trisulfonic acid disodium salt to it, and stir at 73°C After reacting for 6.5 hours, the ethanol was removed by rotary evaporation to obtain a furan ether polycondensate modified by naphthyl sulfonate;

[0036] 3) Dissolve 22 g of the furan ether polycondensate modified by naphthyl sulfonate prepared in step 2) in...

Embodiment 3

[0039] A preparation method of a polymer cement concrete additive, comprising the steps of:

[0040] 1) Dissolve 10 g of furan-2,3,4,5-tetracarboxylic acid and 17.8 g of glycerol propoxy triglycidyl ether in 70 g of N-methylpyrrolidone to form a solution, and then add tetrabutyl bromide Ammonium 4g, stirred and reacted at 110°C for 11 hours under a helium atmosphere, then precipitated in acetone, filtered, and washed with acetone for 5 times, and the acetone was removed by rotary evaporation to obtain a polycondensate of furan ethers;

[0041] 2) Dissolve 24 g of the furan ether polycondensate prepared in step 1) in 63 g of dichloromethane, and add 9 g of 1-naphthylamine-3,6,8-trisulfonic acid disodium salt to it, at 76°C Stirring and reacting for 7 hours, and then rotary steaming to remove dichloromethane to obtain a furan ether polycondensation product modified by naphthyl sulfonate;

[0042] 3) Dissolve 23 g of the furan ether polycondensate modified by naphthyl sulfonate ...

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Abstract

The invention discloses a preparation method of a polymeric cement concrete additive. The method comprises the following steps of (1) preparation of furan ether polycondensate, (2) preparation of naphthalene sulfonate-modification furan ether polycondensate and (3) ion exchange between the naphthalene sulfonate-modification furan ether polycondensate and polyquaternium-10. The invention further discloses the polymeric cement concrete additive prepared through the preparation method of the polymeric cement concrete additive. The polymeric cement concrete additive has the advantages that functions are diverse, the strength, the flowability and the durability of a concrete material are improved and perfected, the impermeability effect is more significant, the doping amount is less, and the plastification performance is more excellent, and the performance of a reinforced concrete body is not affected negatively.

Description

technical field [0001] The invention relates to the technical field of concrete additives, in particular to a polymer cement concrete additive and a preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of urbanization, the problems brought about by urban construction have become increasingly apparent. Among them, engineering quality problems caused by the performance of concrete also occur from time to time. Concrete, referred to as "concrete", usually refers to using cement as cementing material, sand and stone as aggregate, mixed with water in a certain proportion, and obtained by mixing. It is an important building material. [0003] In practical engineering applications, concrete is often exposed to various harsh environments, such as the intrusion of corrosive media around the environment, changes in ambient temperature and humidity, freeze-thaw cycle damage, and some concrete projects are often subject to heavy loa...

Claims

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Application Information

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IPC IPC(8): C08G65/333C08G65/334C08G65/26C04B24/32
CPCC04B24/32C08G65/2615C08G65/33396C08G65/3348C08G2650/04
Inventor 董廷显
Owner 广西建津科技有限公司
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