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Multifunctional cement hydration thermal regulation and control material and preparation method thereof

A technology of cement hydration and heat regulation, which is applied in the field of admixtures in the field of chemical building materials, multi-functional cement hydration heat regulation materials and its preparation, can solve the problems of increasing equipment and site investment, inconvenience of concrete production, etc., and achieves improved convenience. Sexuality, wide applicability, and easy-to-use effects

Active Publication Date: 2019-07-23
JIANGSU SOBUTE NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional concrete production system does not have the equipment to simultaneously add liquid and powder other than sand, stone, and cementitious materials, and additional equipment is required, which brings inconvenience to concrete production and increases the investment in equipment and sites

Method used

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  • Multifunctional cement hydration thermal regulation and control material and preparation method thereof
  • Multifunctional cement hydration thermal regulation and control material and preparation method thereof
  • Multifunctional cement hydration thermal regulation and control material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Preparation of monomer B 1 : 0.1mol (11.4g) allyl glycidyl ether and 0.1mol of mannitol are blended, and a ring-opening addition reaction occurs under the action of a basic catalyst at a high temperature to obtain 0.1mol of mannitol-based monomer B 1 . 2) Preparation of multifunctional cement hydration heat control material: 0.1mol of the above monomer B 1 , 0.1mol of methacrylic acid (monomer A 1 , R 1 is methyl) and 0.2mol of polyethylene glycol monoallyl alcohol ether (monomer C 1 , weight average molecular weight about 500, n=10, m=0) and mercaptoethanol accounting for 0.5% of the total mass of the three monomers to make an aqueous solution, vacuumize and replace with nitrogen several times, heat up to 80°C, and add dropwise under stirring The ammonium persulfate aqueous solution was kept warm for 2 hours after the dropwise addition, then cooled to room temperature, and neutralized by adding alkali to a pH value of 7.4 to obtain a multifunctional cement hydra...

Embodiment 2

[0034] 1) Preparation of monomer B 2 : Blending 0.1mol (11.4g) allyl glycidyl ether with 0.05mol sorbitol and 0.05mol lactitol, a ring-opening addition reaction occurs under the action of a basic catalyst at high temperature to obtain 0.1mol sugar Alcohol-based monomer B 2 . 2) Preparation of multifunctional cement hydration heat control material: 0.1mol of the above monomer B 2 , 0.2mol of sodium acrylate (monomer A 2 , R 1 Is H), 0.25mol of polypropylene glycol ethylene glycol monoprenol ether (monomer C 2 , weight average molecular weight about 5000, n=86, m=20), mercaptoethanol accounting for 1.0% of the total mass of the three monomers and 0.5% hydrogen peroxide to make an aqueous solution, vacuumize and replace with nitrogen several times, then heat up to 40°C, Add dropwise an aqueous solution of ascorbic acid in an equimolar amount to hydrogen peroxide under stirring, keep warm for 2 hours after the dropwise addition, and then cool to room temperature to obtain a m...

Embodiment 3

[0036]1) Preparation of monomer B 3 : 0.1mol (11.4g) allyl glycidyl ether, 0.02mol mannitol, 0.02mol xylitol and 0.06mol maltitol are blended, and a ring-opening addition reaction occurs under the action of a basic catalyst at a high temperature to obtain 0.1mol sugar alcohol-based monomer B 3 . 2) Preparation of multifunctional cement hydration heat control material: 0.1mol of the above monomer B 3 , 0.05mol of acrylic acid and 0.01mol of potassium methacrylate (monomer A 3 , R 1 is methyl), 0.05mol of polypropylene glycol monoisobutenol ether (monomer C 3 , weight average molecular weight about 1000, n=0, m=16) and 0.2% mercaptoacetic acid accounting for the total mass of the three monomers to prepare an aqueous solution, vacuumize and replace with nitrogen several times, heat up to 80°C, and add dropwise over The sodium sulfate aqueous solution was kept warm for 2 hours after the dropwise addition, and then cooled to room temperature, and neutralized by adding alkali t...

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Abstract

The invention discloses a multifunctional cement hydration thermal regulation and control material and a preparation method thereof. The cement hydration thermal regulation and control material is a comb shaped polymer of three side chain structures, wherein the three side chain structures are respectively a carboxyl structure, a sugar alcohol group structure and a polyether structure; a polymer main chain is a carbon chain structure formed by free radical polymerization of double bonds in a double-bond compound monomer. According to the multifunctional cement hydration thermal regulation andcontrol material prepared by the preparation method, the gathering of cement hydration thermal regulation and control performance, water reduction performance and reduction performance can be realizedin the same molecule, the focused regulation and control of performance can be realized through structure regulation, and multi-ingredient compounding is not required during use so as to be more convenient. The regulation and control material disclosed by the invention is nontoxic, has water solubility, can be prepared into proper concentration and is convenient in use.

Description

technical field [0001] The invention relates to a multifunctional cement hydration heat regulating material and a preparation method thereof, belonging to the category of admixtures in the field of chemical building materials. Background technique [0002] Cement concrete is the most widely used building material in the world today, and is widely used in municipal, bridge, railway, water conservancy and hydropower and other fields. As a kind of artificial stone, cement concrete has the advantages of high strength, strong plasticity, and low price. At the same time, as a porous material, cement concrete has the characteristics of good thermal insulation performance and poor thermal conductivity. With the development of large-volume, super-high-rise, and super-long buildings, the demand for high-strength cement concrete increases, the water-binder ratio continues to decrease, and the heat of cement hydration is large. While meeting the strength of concrete, the temperature shr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F216/14C08F220/06C04B24/26
CPCC08F283/065C04B24/2694C04B2103/0089C08F216/1416C04B2103/006C04B28/02C08F290/062C08F220/06C08F290/142
Inventor 刘加平王瑞田倩王文彬李磊王育江李华姚婷储阳
Owner JIANGSU SOBUTE NEW MATERIALS
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