阅读说明：本技术 一种适应性综合型液体聚羧酸减水剂 (Adaptive comprehensive liquid polycarboxylate superplasticizer ) 是由 孙肖武 耿秉政 竹鹏翔 吴博 于 2020-06-10 设计创作，主要内容包括：本发明属于减水剂领域,尤其是一种适应性综合型液体聚羧酸减水剂,针对现有的减水剂功能单一,抗冻、缓凝特性差的问题,现提出如下方案,其包括以下重量份的原料：聚羧酸溶液15-25份、丙烯酸10-15份、甲基丙烯磺酸钠1-5份、抗泥型聚羧酸减水剂1-5份、保坍型聚羧酸减水剂1-5份、减水型聚羧酸减水剂1-5份、木质素磺酸盐5-10份、海藻酸钠3-8份、乙二醇3-8份、磷酸酯胺盐1-5份、烷基胺2-7份、丙二醇3-7份、苯磺酰氯5-10份、苯甲酰氯2-8份、葡萄糖酸钠6-11份、磷酸钠盐4-9份、柠檬酸钠2-6份,本发明在提高减水率的同时,可以可以提高抗冻性能和缓凝特性,制备方法简单。(The invention belongs to the field of water reducing agents, and particularly relates to an adaptive comprehensive liquid polycarboxylate water reducing agent, which aims at solving the problems of single function and poor freezing resistance and slow setting properties of the existing water reducing agent and provides the following scheme, wherein the adaptive comprehensive liquid polycarboxylate water reducing agent comprises the following raw materials in parts by weight: 15-25 parts of polycarboxylic acid solution, 10-15 parts of acrylic acid, 1-5 parts of sodium methallyl sulfonate, 1-5 parts of mud-resistant polycarboxylic acid water reducing agent, 1-5 parts of slump-resistant polycarboxylic acid water reducing agent, 1-5 parts of water-reducing polycarboxylic acid water reducing agent, 5-10 parts of lignosulfonate, 3-8 parts of sodium alginate, 3-8 parts of ethylene glycol, 1-5 parts of phosphate amine salt, 2-7 parts of alkylamine, 3-7 parts of propylene glycol, 5-10 parts of benzenesulfonyl chloride, 2-8 parts of benzoyl chloride, 6-11 parts of sodium gluconate, 4-9 parts of sodium phosphate and 2-6 parts of sodium citrate.)

1. An adaptive comprehensive liquid polycarboxylate superplasticizer is characterized by comprising the following raw materials in parts by weight: 15-25 parts of polycarboxylic acid solution, 10-15 parts of acrylic acid, 1-5 parts of sodium methallyl sulfonate, 1-5 parts of mud-resistant polycarboxylic acid water reducing agent, 1-5 parts of slump-resistant polycarboxylic acid water reducing agent, 1-5 parts of water-reducing polycarboxylic acid water reducing agent, 5-10 parts of lignosulfonate, 3-8 parts of sodium alginate, 3-8 parts of ethylene glycol, 1-5 parts of phosphate amine salt, 2-7 parts of alkylamine, 3-7 parts of propylene glycol, 5-10 parts of benzenesulfonyl chloride, 2-8 parts of benzoyl chloride, 6-11 parts of sodium gluconate, 4-9 parts of sodium phosphate salt and 2-6 parts of sodium citrate.

2. The adaptive comprehensive liquid polycarboxylate superplasticizer according to claim 1, characterized by comprising the following raw materials in parts by weight: 16-24 parts of polycarboxylic acid solution, 11-14 parts of acrylic acid, 2-4 parts of sodium methallyl sulfonate, 2-4 parts of mud-resistant polycarboxylic acid water reducing agent, 2-4 parts of slump-resistant polycarboxylic acid water reducing agent, 2-4 parts of water-reducing polycarboxylic acid water reducing agent, 6-9 parts of lignosulfonate, 4-7 parts of sodium alginate, 4-7 parts of ethylene glycol, 2-4 parts of phosphate amine salt, 3-6 parts of alkylamine, 4-6 parts of propylene glycol, 6-9 parts of benzenesulfonyl chloride, 3-7 parts of benzoyl chloride, 7-10 parts of sodium gluconate, 5-8 parts of sodium phosphate salt and 3-5 parts of sodium citrate.

3. The adaptive comprehensive liquid polycarboxylate superplasticizer according to claim 1, characterized by comprising the following raw materials in parts by weight: 20 parts of polycarboxylic acid solution, 12 parts of acrylic acid, 3 parts of sodium methallylsulfonate, 3 parts of mud-resistant polycarboxylic acid water reducing agent, 3 parts of slump-resistant polycarboxylic acid water reducing agent, 3 parts of water-reducing polycarboxylic acid water reducing agent, 7 parts of lignosulfonate, 5 parts of sodium alginate, 5 parts of ethylene glycol, 3 parts of phosphate amine salt, 4 parts of alkylamine, 5 parts of propylene glycol, 7 parts of benzenesulfonyl chloride, 4 parts of benzoyl chloride, 8 parts of sodium gluconate, 6 parts of sodium phosphate salt and 4 parts of sodium citrate.

4. A preparation method of an adaptive comprehensive liquid polycarboxylate superplasticizer is characterized by comprising the following steps:

s1: putting a polycarboxylic acid solution, acrylic acid, sodium methallylsulfonate, an anti-mud polycarboxylic acid water reducing agent, a slump-retaining polycarboxylic acid water reducing agent, a water-reducing polycarboxylic acid water reducing agent and lignosulfonate into a reaction kettle, stirring and mixing, and heating for reaction to obtain a mixture;

s2: stirring and mixing sodium alginate, ethylene glycol, amine phosphate, alkylamine and propylene glycol to prepare a first drop of liquid;

s3: stirring and mixing benzenesulfonyl chloride, benzoyl chloride, sodium gluconate, sodium phosphate and sodium citrate to prepare second dropping liquid;

s4: and (3) dripping the first dropping liquid and the second dropping liquid into the mixture, and stirring and mixing to obtain the adaptive comprehensive liquid polycarboxylate superplasticizer.

5. The method for preparing an adaptive comprehensive liquid polycarboxylate superplasticizer according to claim 4, wherein in S1, a polycarboxylate solution, acrylic acid, sodium methallyl sulfonate, an anti-mud polycarboxylate superplasticizer, a slump-retaining polycarboxylate superplasticizer, a water-reducing polycarboxylate superplasticizer and lignosulfonate are put into a reaction kettle, stirred, mixed and heated for reaction to prepare a mixture, the heating temperature is 40-50 ℃, the heating time is 30-60min, and the temperature is kept for 1-2h after the heating is finished.

6. The method as claimed in claim 4, wherein in S1, the stirring and mixing speed is 500-600 r/min.

7. The method for preparing the adaptive comprehensive liquid polycarboxylate superplasticizer according to claim 4, wherein in S2, sodium alginate, ethylene glycol, amine phosphate, alkylamine and propylene glycol are stirred and mixed to prepare a first drop of liquid, the stirring and mixing speed is 400-500r/min, and the stirring time is 10-15 min.

8. The method for preparing an adaptive comprehensive liquid polycarboxylate superplasticizer according to claim 4, wherein in S3, benzenesulfonyl chloride, benzoyl chloride, sodium gluconate, sodium phosphate and sodium citrate are stirred and mixed to prepare a second dropping liquid, wherein the stirring and mixing speed is 400-500r/min, and the stirring time is 15-20 min.

9. The method for preparing the adaptive comprehensive liquid polycarboxylate superplasticizer according to claim 4, wherein in S4, the first dropping liquid and the second dropping liquid are dropped into the mixture, and the mixture is stirred and mixed to obtain the adaptive comprehensive liquid polycarboxylate superplasticizer, wherein the first dropping liquid is dropped within 30-40min, and the second dropping liquid is dropped within 40-45 min.

10. The method as claimed in claim 4, wherein in S4, the stirring and mixing speed is 500-600r/min, and the stirring temperature is 20-25 ℃.

Technical Field

The invention relates to the field of water reducing agents, in particular to an adaptive comprehensive liquid polycarboxylic acid water reducing agent.

Background

The water reducing agent is a concrete admixture capable of reducing the water consumption for mixing under the condition of maintaining the slump constant of concrete basically. Most of them are anionic surfactants, such as lignosulfonate and naphthalene sulfonate formaldehyde polymer. After the concrete mixture is added, the dispersion effect on cement particles is achieved, the workability of the concrete mixture can be improved, the unit water consumption is reduced, and the fluidity of the concrete mixture is improved; or the unit cement consumption is reduced, and the cement is saved.

Through searching, publication No.: the patent document CN108503256A discloses an adaptive comprehensive polycarboxylic acid water reducing agent, which comprises the following components: 15-30 parts of a mud-resistant polycarboxylic acid water reducing agent, 8-30 parts of a slump-retaining polycarboxylic acid water reducing agent, 10-34 parts of a water-reducing polycarboxylic acid water reducing agent, 7-28 parts of a polycarboxylic acid solution, 5-16 parts of lignosulfonate and 10-40 parts of water. The adaptive comprehensive polycarboxylate superplasticizer disclosed by the invention has higher water reducing rate and slump loss resistance, meets the construction requirements of most of concrete, avoids adding a water reducing auxiliary agent additionally and reduces the production cost.

The existing water reducing agent has single function and poor freezing resistance and slow setting characteristics, so an adaptive comprehensive liquid polycarboxylate water reducing agent is provided for solving the problems.

Disclosure of Invention

The invention aims to solve the defects of single function and poor freezing resistance and slow setting properties of a water reducing agent in the prior art, and provides an adaptive comprehensive liquid polycarboxylic acid water reducing agent.

The invention provides an adaptive comprehensive liquid polycarboxylate superplasticizer which comprises the following raw materials in parts by weight: 15-25 parts of polycarboxylic acid solution, 10-15 parts of acrylic acid, 1-5 parts of sodium methallyl sulfonate, 1-5 parts of mud-resistant polycarboxylic acid water reducing agent, 1-5 parts of slump-resistant polycarboxylic acid water reducing agent, 1-5 parts of water-reducing polycarboxylic acid water reducing agent, 5-10 parts of lignosulfonate, 3-8 parts of sodium alginate, 3-8 parts of ethylene glycol, 1-5 parts of phosphate amine salt, 2-7 parts of alkylamine, 3-7 parts of propylene glycol, 5-10 parts of benzenesulfonyl chloride, 2-8 parts of benzoyl chloride, 6-11 parts of sodium gluconate, 4-9 parts of sodium phosphate salt and 2-6 parts of sodium citrate.

Preferably, the feed comprises the following raw materials in parts by weight: 16-24 parts of polycarboxylic acid solution, 11-14 parts of acrylic acid, 2-4 parts of sodium methallyl sulfonate, 2-4 parts of mud-resistant polycarboxylic acid water reducing agent, 2-4 parts of slump-resistant polycarboxylic acid water reducing agent, 2-4 parts of water-reducing polycarboxylic acid water reducing agent, 6-9 parts of lignosulfonate, 4-7 parts of sodium alginate, 4-7 parts of ethylene glycol, 2-4 parts of phosphate amine salt, 3-6 parts of alkylamine, 4-6 parts of propylene glycol, 6-9 parts of benzenesulfonyl chloride, 3-7 parts of benzoyl chloride, 7-10 parts of sodium gluconate, 5-8 parts of sodium phosphate salt and 3-5 parts of sodium citrate.

Preferably, the feed comprises the following raw materials in parts by weight: 20 parts of polycarboxylic acid solution, 12 parts of acrylic acid, 3 parts of sodium methallylsulfonate, 3 parts of mud-resistant polycarboxylic acid water reducing agent, 3 parts of slump-resistant polycarboxylic acid water reducing agent, 3 parts of water-reducing polycarboxylic acid water reducing agent, 7 parts of lignosulfonate, 5 parts of sodium alginate, 5 parts of ethylene glycol, 3 parts of phosphate amine salt, 4 parts of alkylamine, 5 parts of propylene glycol, 7 parts of benzenesulfonyl chloride, 4 parts of benzoyl chloride, 8 parts of sodium gluconate, 6 parts of sodium phosphate salt and 4 parts of sodium citrate.

The invention also provides a preparation method of the adaptive comprehensive liquid polycarboxylate superplasticizer, which comprises the following steps:

s1: putting a polycarboxylic acid solution, acrylic acid, sodium methallylsulfonate, an anti-mud polycarboxylic acid water reducing agent, a slump-retaining polycarboxylic acid water reducing agent, a water-reducing polycarboxylic acid water reducing agent and lignosulfonate into a reaction kettle, stirring and mixing, and heating for reaction to obtain a mixture;

s2: stirring and mixing sodium alginate, ethylene glycol, amine phosphate, alkylamine and propylene glycol to prepare a first drop of liquid;

s3: stirring and mixing benzenesulfonyl chloride, benzoyl chloride, sodium gluconate, sodium phosphate and sodium citrate to prepare second dropping liquid;

s4: and (3) dripping the first dropping liquid and the second dropping liquid into the mixture, and stirring and mixing to obtain the adaptive comprehensive liquid polycarboxylate superplasticizer.

Preferably, in S1, adding a polycarboxylic acid solution, acrylic acid, sodium methallyl sulfonate, an anti-mud polycarboxylic acid water reducing agent, a slump-retaining polycarboxylic acid water reducing agent, a water-reducing polycarboxylic acid water reducing agent, and lignosulfonate into a reaction kettle, stirring, mixing, heating for reaction to obtain a mixture, heating at 40-50 ℃ for 30-60min, and keeping the temperature for 1-2h after heating.

Preferably, in the S1, the stirring and mixing speed is 500-600 r/min.

Preferably, in the step S2, sodium alginate, ethylene glycol, amine phosphate, alkylamine and propylene glycol are stirred and mixed to prepare a first drop of liquid, wherein the stirring and mixing speed is 400-500r/min, and the stirring time is 10-15 min.

Preferably, in S3, the benzenesulfonyl chloride, benzoyl chloride, sodium gluconate, sodium phosphate, and sodium citrate are stirred and mixed to obtain the second dropping solution, wherein the stirring and mixing speed is 400-.

Preferably, in S4, the first dropping liquid and the second dropping liquid are dropped into the mixture, and the mixture is stirred and mixed to obtain the adaptive comprehensive liquid polycarboxylate superplasticizer, wherein the first dropping liquid is dropped within 30-40min, and the second dropping liquid is dropped within 40-45 min.

Preferably, in the S4, the stirring and mixing speed is 500-600r/min, and the stirring temperature is 20-25 ℃.

Sodium alginate is a byproduct after iodine and mannitol are extracted from brown algae kelp or gulfweed, molecules of the sodium alginate are connected by beta-D-mannuronic acid (beta-D-mannuronic, M) and alpha-L-guluronic acid (alpha-L-guluronic acid, G) according to a (1 → 4) bond, the sodium alginate is a natural polysaccharide and has stability, solubility, viscosity and safety required by pharmaceutical preparation auxiliary materials, and the sodium alginate is widely applied to the fields of food industry and medicine;

ethylene glycol (ethylene glycol) is also known as "glycol" or "1, 2-ethylene glycol", abbreviated as EG. The simplest diol has the chemical formula (CH2OH) 2. Ethylene glycol is a colorless, odorless, sweet liquid that is toxic to animals and is lethal to humans at a dose of about 1.6 g/kg. Ethylene glycol is miscible with water and acetone, but has low solubility in ethers. Used as solvent, antifreezing agent and raw material for synthesizing terylene. Polyethylene glycol (PEG), a high polymer of ethylene glycol, is a phase transfer catalyst and is also used for cell fusion;

propylene glycol is a chemical reagent, miscible with water, ethanol and various organic solvents, and has the chemical formula of C3H8O 2. It is colorless viscous liquid in normal state, almost tasteless, and slightly sweet. Propylene glycol can be used as raw material of unsaturated polyester resin, and can be used as humectant in cosmetics, toothpaste and soap in combination with glycerol or sorbitol. In hair dyes, as a conditioning and hair-evening agent, as an antifreeze, also in cellophane, plasticizer and pharmaceutical industry;

benzenesulfonyl chloride, benzanesulfonylchloride, molecular formula C6H5ClO2S, molecular weight 176.62. A colorless transparent oily liquid. The method is mainly used for organic synthesis, preparation of sulfonamide and identification of various amines. Is unstable. The opening is placed in the air, and the water in the air can be absorbed by the opening in the air in a large amount and is gradually hydrolyzed, so that the pH value is reduced. The volatilized hydrogen chloride can form white smoke and has strong irritation;

benzoyl chloride, a colorless liquid, has an irritating odor. Dissolved in ether, chloroform and benzene. Gradually decomposing in water or ethanol to generate benzoic acid or ethyl benzoate and hydrogen chloride. Benzoyl chloride is an important intermediate for the preparation of dyes, fragrances, organic peroxides, pharmaceuticals and resins. Benzoyl chloride has also been used in photography and in the production of artificial tannins, and has also been used as a irritant gas in chemical warfare;

the sodium gluconate has wide industrial application, can be used as a high-efficiency chelating agent in the industries of construction, textile printing and dyeing, metal surface treatment, water treatment and the like, a steel surface cleaning agent, a glass bottle cleaning agent, aluminum oxide coloring in the electroplating industry and the like, and can be used as a high-efficiency retarder, a high-efficiency water reducing agent and the like in the concrete industry;

sodium citrate, also known as "sodium citrate", is a colorless rhombic columnar crystal that is stable in air and has a relative density of 1.859. Can be dissolved in water and glycerol, and is slightly soluble in ethanol. The aqueous solution has slight alkalinity, and has cool feeling when tasting. When heated to 100 ℃ it becomes a dihydrate salt. The latter are colorless monoclinic columnar crystals or granular powder, which are easily soluble in water. At 1450 ℃ it becomes anhydrous and decomposes at higher temperatures. Commonly used as buffering agent, complexing agent and bacteria culture medium, and can be used for promoting urination, eliminating phlegm, inducing perspiration, preventing blood coagulation, and can be used for food, beverage, electroplating, photography, etc.;

the invention has the beneficial effects that:

the water reducing rate can be improved by using a polycarboxylic acid solution, acrylic acid, sodium methallylsulfonate, an anti-mud polycarboxylic acid water reducing agent, a slump-retaining polycarboxylic acid water reducing agent, a water-reducing polycarboxylic acid water reducing agent and lignosulfonate;

the antifreezing property can be improved by taking sodium alginate, ethylene glycol, amine phosphate, alkylamine and propylene glycol as raw materials;

the retarding property can be improved by using benzenesulfonyl chloride, benzoyl chloride, sodium gluconate, sodium phosphate and sodium citrate;

the invention can improve the frost resistance and the slow setting property while improving the water reducing rate, and the preparation method is simple.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.