CN103483576A - Method for producing cane sugar modified polyether - Google Patents

Abstract

The invention discloses a method for producing cane sugar modified polyether. The method comprises the following steps: adding 100 parts of polyether into a pressurizing and heating reactor, subsequently adding 10 parts of powder cane sugar, uniformly stirring, rising the temperature to be 11 DEG C, covering and pressurizing to be 10MPa, reacting and treating for 1 hour, subsequently introducing cooling water into a water jacket of the reactor so as to reduce the temperature of the reactant to be the room temperature, and pouring out so as to obtain the cane sugar modified polyether. The addition amount of the modified polyether in a cement grinding aid is 10-15% in percentage by mass. The cane sugar modified polyether is used as a raw material of the cement grinding aid. The cane sugar modified polyether has the advantages of lubrication, lubrication, cement activity improvement, cement strength improvement and cement grinding property improvement, and is applicable to application as the raw material of the cement grinding aid.

Description

A kind of production method of sucrose modified polyether

Technical field

What the present invention proposed is the grinding aid for cement grinding, specifically a kind of production method of sucrose modified polyether.

Technical background

Polyethers CAS NO.68227-96-3, molecular formula C14H10F17NO4S, 25 ℃ of density: 1.095g/mLat ^[1], fusing point: 57-61 ℃, boiling point: 200 ℃ (lit.), flash-point: 230 ℉.

The base polymer that ether is the constitutional features group be take in multiple unit.Be the important source material of producing urethane, there is the several functions such as froth breaking, breakdown of emulsion, dispersion, infiltration, emulsification.

Polyethers claims again polyglycol ether, is a kind of synthetic oil of current sales volume maximum.It is that to take oxyethane, propylene oxide, butylene oxide ring and tetrahydrofuran (THF) etc. be raw material, the simple linear polymer that open loop homopolymerization or copolymerization make under catalyst action.

Characteristic:

1 viscosity characteristics;

The 2 sticky characteristics of pressing;

3 low-temperature fluiditys;

4 oilnesies;

5 thermo-oxidative stabilities;

6 water-soluble and oil solubles.

Polyether glycol (abbreviation polyethers) is through polyaddition reaction, to be made under catalyzer exists by initiator (containing the compound of active hydrogen group) and oxyethane (EO), propylene oxide (PO), butylene oxide ring (BO) etc.Polyethers output the maximum is for being used as initiator and epoxide (be generally PO and EO also) with glycerine (glycerol), by conditions such as feed way (mixing adds or separately adds), the dosage ratio that changes PO and EO, the order that feeds in raw material, produce various general polyether glycols.Polyethers (polyether glycol) is the important derivatives of propylene oxide.

1, rigid foam is used YC series polyethers is transparent viscous liquid, and character is comparatively stable, and slightly nontoxic, the non-corrosiveness of special odor, water-soluble, good in amine, fluoro trichloromethane and most organism intermiscibility.Polyethers is non-combustible and explosive articles.

2, the YC series polyethers that elastomerics, coating, tackiness agent are used is colourless or faint yellow viscosity transparent liquid, and character is comparatively stable, and slightly special odor is nontoxic, and non-corrosiveness is good with most organism intermiscibilities, is non-combustible and explosive articles.

According to the related data inquiry, at present, polyethers is not application in cement grinding aid.

Summary of the invention

For the raw material as cement grinding aid by polyethers, the present invention proposes a kind of production method of sucrose modified polyether.The method, by reactor, adds polyethers and sucrose, prepares the complex body of polyethers and sucrose, realizes can applying in cement grinding aid, improves the character of cement grinding aid.Solve modified polyether as the technical problem of applying in cement grinding aid.

The scheme that technical solution problem of the present invention adopts is:

In mass ratio, 100 parts of polyethers are packed in pressurization, reactor heating, then add 10 parts of the sucrose of powdery, stir, be warming up to subsequently 110 ℃, the lid lid is pressurized to 10 MPas, reaction treatment 1 hour then passes into water coolant in the water jacket of reactor, makes reactant cool to room temperature, pour out, become the sucrose modified polyether.

The addition of modified polyether in cement grinding aid is 3-5% by mass percentage.

Positively effect, the present invention is by using the sucrose modified polyether, as the raw material of cement grinding aid.There is lubricated, slow setting, the increase activity of cement, improve cement products intensity, improve the advantage of cement grog grinding performance.The suitable application of the grinding aid as cement grinding.

Embodiment

In mass ratio, 100 parts of polyethers are packed in pressurization, reactor heating, then add 10 parts of the sucrose of powdery, stir, be warming up to subsequently 110 ℃, the lid lid is pressurized to 10 MPas, reaction treatment 1 hour then passes into water coolant in the water jacket of reactor, is that reactant cools to room temperature, pour out, become the sucrose modified polyether.

The addition of sucrose modified polyether in cement grinding aid is 3-5% by mass percentage.

In cement grinding aid, utilize polyethers viscosity characteristics, sticky characteristic, low-temperature fluidity, oilness, thermo-oxidative stability and the water-soluble and oil-soluble characteristic of pressing, utilize the delayed coagulation of sucrose, therefore can in the cement grog grinding process, frictional force between cement granules be reduced, contribute to flow, and sucrose can prevent that cement and moisture from producing rapid hardening, slow down the loss of the activity of cement, regulate cement products time of coagulation, the hydration reaction that is beneficial to cement is complete.

Effect test,

Conventional cement grinding aid has the mixture of metallic salt and trolamine, tri-isopropanolamine, in the process of cement grog grinding, adds, and plays lubricated and levigate effect.Usually by 10% of cement quality, add.After adding cement grinding aid, can increase the frictional force of cement granules, be conducive to the levigate of cement, and not change the character of cement.

Adopt sucrose modified polyether of the present invention, can reduce the addition of metallic salt and trolamine and tri-isopropanolamine, and be conducive to the levigate of cement clinker, and play low-temperature fluidity and oilness.Through the conventional cement grinding aid of equivalent and the simultaneous test of modification grinding aid of the present invention, can reduce the grinding time 20% of cement, and 1 hour in advance finished cement presetting period, three days intensity improves 5%, 28 day ultimate compression strength and improves 10%.

Illustrate, adopt modified polyether of the present invention to there is significant effect as the raw material of cement grinding aid.

Claims (2)

1. the production method of a sucrose modified polyether is characterized in that:

In mass ratio, 100 parts of polyethers are packed in pressurization, reactor heating, then add 10 parts of the sucrose of powdery, stir, be warming up to subsequently 110 ℃, the lid lid is pressurized to 10 MPas, reaction treatment 1 hour then passes into water coolant in the water jacket of reactor, is that reactant cools to room temperature, pour out, become the sucrose modified polyether.

2. the production method of a kind of sucrose modified polyether according to claim 1 is characterized in that: the addition of sucrose modified polyether in cement grinding aid is 10-15% by mass percentage.