CN103359967A - Aliphatic superplasticizer and preparation method thereof - Google Patents

Abstract

The invention relates to the field of water reducing agent, and specifically relates to an aliphatic superplasticizer and a preparation method thereof. The aliphatic superplasticizer is characterized in that the superplasticizer mainly comprises the raw materials of: 5.5-6.10% of anhydrous sodium sulfite, 6-8% of sodium metabisulfite, 2.5-3% of caustic soda flake, 9-11% of an acetone solution, 30-32% of a formaldehyde solution, and 39.10-47% of water. When the superplasticizer is mixed with concrete, the color of the concrete is not influenced, such that the color of solidified concrete can be maintained original. During the reaction, the chemical reaction can be smoothly carried out with the heat emitted by the chemical reaction during the reaction, such that steam and the like can be saved, and production cost is reduced.

Description

A kind of aliphatic high-efficiency water reducing agent and preparation method thereof

Technical field

The present invention relates to the water reducer field, relate in particular a kind of aliphatic water reducing agent and preparation method thereof.

Technical background

Aliphatic water reducing agent is that application is the requisite a kind of composition on the concrete, at present, aliphatic high-efficiency water reducing agent on the market adds in the concrete, concrete workability is relatively poor, existing aliphatics is in the process of producing simultaneously, the methods of heating that adopt can be carried out its reaction fast, and this method is unfavorable for the control of cost, and production cost is higher.

Summary of the invention

The technical problem to be solved in the present invention provides the preparation method of the simple aliphatic water reducing agent of manufacture process and this water reducer.

For solving the problems of the technologies described above, the invention provides a kind of aliphatic high-efficiency water reducing agent, it is characterized in that: the main raw material that described water reducer comprises has: sodium sulphite anhydrous 99.3, Sodium Pyrosulfite, sheet alkali, acetone soln, formaldehyde solution and water, the component of described above-mentioned main raw material is: sodium sulphite anhydrous 99.3 5.5 ~ 6.5%

Sodium Pyrosulfite 6 ~ 8%%

Sheet alkali 2.5 ~ 3%

Acetone soln 9 ~ 11%

Formaldehyde solution 30 ~ 32%%

Water 39.5 ~ 47%

A kind of aliphatic high-efficiency water reducing agent, described main raw material component is: sodium sulphite anhydrous 99.3 5.5%

Sodium Pyrosulfite 7%

Sheet alkali 2.5%

Acetone soln 10%

Formaldehyde solution 30%

Water 45%

A kind of preparation method of aliphatic high-efficiency water reducing agent carries out according to the following steps,

(1) take by weighing 5.5 kilograms of sodium sulphite anhydrous 99.3s, 7 kilograms of Sodium Pyrosulfites, 2.5 kilograms in sheet alkali, 10 kilograms of acetone solns, 30 kilograms of formaldehyde solutions, 45 kilograms in water is for subsequent use;

(2) all join 45 kg water for subsequent use in the reactor, the agitator of opening on the reactor stirs the material in the reactor, in reactor, add 10 kilograms of sodium sulphite anhydrous 99.3s for subsequent use, treat its whole dissolvings, add 7 kilograms of Sodium Pyrosulfites for subsequent use again in reactor, stirring is dissolved it fully, again to the sheet alkali solid of reaction such as 2.5 kilograms of interior addings, stir, all get solution after the dissolving until above-mentioned all solids material, and with the large opening for feed sealing of reactor;

(3) be loaded with the upper acetone soln that slowly adds in the reactor of solution in (2), after 10 kilograms of acetone solns are added dropwise to complete, solution in the reactor stirred 20 minutes;

(4) slowly add 15 kilograms of formaldehyde solutions in the reactor in (3), guarantees that 15 kilograms of formaldehyde solutions dropwise the interior position of afterreaction still and reach 50 ~ 55 ℃, be incubated 30 minutes;

(5) slowly add remaining 15 kilograms formaldehyde solution in the reactor in (4), and guarantee that the temperature that is added dropwise to complete the afterreaction still in formaldehyde solution reaches 90 ~ 95 ℃, is incubated 2.5 ~ 3 hours;

(6) with the reactor fast cooling to 40 of insulation in (5) ℃, can obtain henna aliphatic high-efficiency water reducing agent.

Adopt the beneficial effect of technique scheme to be: the raw material of aliphatic water reducing agent of the present invention is comparatively common, cost is lower, the manufacture process is simple, environmental requirement to reaction is lower, reaction process is easy to control, the water reducer that generates after the reaction is red-brown, during use and other water reducers, be black after the mixing such as retardant, with can not affect concrete color after concrete mixes, so that the concrete color after solidifying can keep original color, in reaction process, only need to guarantee carrying out smoothly of chemical reaction by the chemical reaction liberated heat occurs in the reaction process, save steam etc., reduced production cost.

Embodiment

The below describes technical scheme of the present invention, so that those skilled in the art understand.

A kind of aliphatic high-efficiency water reducing agent, described main raw material component is:

Sodium sulphite anhydrous 99.3 5.5%

Sodium Pyrosulfite 7%

Sheet alkali 2.5%

Acetone soln 10%

Formaldehyde solution 30%

Water 45%

A kind of preparation method of aliphatic high-efficiency water reducing agent carries out according to the following steps,

At first, take by weighing 5.5 kilograms of sodium sulphite anhydrous 99.3s, 7 kilograms of Sodium Pyrosulfites, 2.5 kilograms in sheet alkali, 10 kilograms of acetone solns, 30 kilograms of formaldehyde solutions, 45 kilograms in water is for subsequent use;

Secondly, all join 45 kg water for subsequent use in the reactor, the agitator of opening on the reactor stirs the material in the reactor, adds 5.5 kilograms of sodium sulphite anhydrous 99.3s for subsequent use in reactor, treats its whole dissolvings, in reactor, add 7 kilograms of Sodium Pyrosulfites for subsequent use again, stirring is dissolved it fully, to the sheet alkali solid of reaction such as 2.5 kilograms of interior addings, stirs again, all get solution after the dissolving until above-mentioned all solids material, and with the large opening for feed sealing of reactor;

Again, the upper acetone soln that slowly adds in the above-mentioned reactor that is loaded with solution after 10 kilograms of acetone solns are added dropwise to complete, stirred 20 minutes solution in the reactor;

Again, in above-mentioned reactor, slowly add 15 kilograms of formaldehyde solutions, guarantee that 15 kilograms of formaldehyde solutions dropwise the interior position of afterreaction still and reach 50 ~ 55 ℃, be incubated 30 minutes;

Again, in above-mentioned reactor, slowly add remaining 15 kilograms formaldehyde solution, and guarantee that the temperature that is added dropwise to complete the afterreaction still in formaldehyde solution reaches 90 ~ 95 ℃, is incubated 2.5 ~ 3 hours;

At last, to the reactor fast cooling to 40 of above-mentioned insulation ℃, can obtain henna aliphatic high-efficiency water reducing agent.

Water reducer of the present invention and normal concrete with the slump and etc. under the prerequisite of cement consumption, water-reducing rate can reach 18 ~ 20%, each age strength of concrete all is significantly increased, and can improve in 3 ~ 7 days still can to improve about 20% in 100 ~ 70%, 28 days; Have significant pumpability, compare with normal concrete, under the prerequisite with water cement ratio, slump increased value 〉=100mm, 2 hours slump-loss rate＜7%; Can enlarge markedly concrete flowability, improve operability, can delay the hydrated cementitious exothermic peak, the cold seam phenomenon of the key coat of avoiding constructing, its anti-cracking waterproof performance of Effective Raise; Have and increase substantially concrete flowability and plasticizing function, thereby greatly improved concrete serviceability; Mix the concrete of this product, the characteristics such as have that cohesiveness is strong, air content is little and bleeding rate is little can effectively be improved all kinds of clear-water concretes surfaces such as overhead, motorway, bridge and close clean attractive in appearance; Can be according to specific technical requirements, can make fresh concrete have super slow setting, high protect collapse, the characteristics such as Self-leveling, without vibration, be applicable to large-scale abutment, fill with stake, foundation pile and deep water, the concrete works of dark base.

Above-mentioned exemplary description has been carried out in invention; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as this non-substantially improved that has adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasions without improving the design that will invent and technical scheme, all within protection scope of the present invention.

Claims (1)

1. aliphatic high-efficiency water reducing agent, it is characterized in that: the main raw material that described water reducer comprises has: sodium sulphite anhydrous 99.3, Sodium Pyrosulfite, sheet alkali, acetone soln, formaldehyde solution and water, the component of described above-mentioned main raw material is: sodium sulphite anhydrous 99.3 10 ~ 6.10%

Sodium Pyrosulfite 6 ~ 8%%

Sheet alkali 2.5 ~ 3%

Acetone soln 9 ~ 11%

Formaldehyde solution 30 ~ 32%%

Water 39.10 ~ 47%

A kind of aliphatic high-efficiency water reducing agent according to claim 1 is characterized in that: described main raw material component is: sodium sulphite anhydrous 99.3 5.5%

Sodium Pyrosulfite 7%

Sheet alkali 2.5%

Acetone soln 10%

Formaldehyde solution 30%

Water 45%

According to claim 1, the preparation method of described a kind of aliphatic high-efficiency water reducing agent ~ 2 is characterized in that: carry out according to the following steps,

(1) take by weighing 5.5 kilograms of sodium sulphite anhydrous 99.3s, 7 kilograms of Sodium Pyrosulfites, 2.5 kilograms in sheet alkali, 10 kilograms of acetone solns, 30 kilograms of formaldehyde solutions, 45 kilograms in water is for subsequent use;

(2) all join 45 kg water for subsequent use in the reactor, the agitator of opening on the reactor stirs the material in the reactor, in reactor, add 5.5 kilograms of sodium sulphite anhydrous 99.3s for subsequent use, treat its whole dissolvings, add 7 kilograms of Sodium Pyrosulfites for subsequent use again in reactor, stirring is dissolved it fully, again to the sheet alkali solid of reaction such as 2.5 kilograms of interior addings, stir, all get solution after the dissolving until above-mentioned all solids material, and with the large opening for feed sealing of reactor;

(3) be loaded with the upper acetone soln that slowly adds in the reactor of solution in (2), after 10 kilograms of acetone solns are added dropwise to complete, solution in the reactor stirred 20 minutes;

(4) slowly add 15 kilograms of formaldehyde solutions in the reactor in (3), guarantees that 15 kilograms of formaldehyde solutions dropwise the interior position of afterreaction still and reach 50 ~ 55 ℃, be incubated 30 minutes;

(5) slowly add remaining 15 kilograms formaldehyde solution in the reactor in (4), and guarantee that the temperature that is added dropwise to complete the afterreaction still in formaldehyde solution reaches 90 ~ 95 ℃, is incubated 2.5 ~ 3 hours;

(6) with the reactor fast cooling to 40 of insulation in (5) ℃, can obtain henna aliphatic high-efficiency water reducing agent.